Extracting prog: 59m35.890937542s Minimizing prog: 1h20m2.434633176s Simplifying prog options: 23m11.581224944s Extracting C: 5m54.507231511s Simplifying C: 0s extracting reproducer from 67 programs testing a last program of every proc single: executing 17 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_connect$midi detailed listing: executing program 0: syz_usb_connect(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="120100006325a640402000498b4d000000010902240001000000000904000002214c6a0009050702000000da000905890e"], 0x0) syz_usb_connect$midi(0x3, 0xb4, &(0x7f0000000040)={{0x12, 0x1, 0x200, 0x0, 0x0, 0x0, 0x10, 0x763, 0x1041, 0x40, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0xa2, 0x1, 0x1, 0x9, 0x30, 0x7, "", {{{0x9, 0x4, 0x0, 0x0, 0x5, 0x1, 0x3, 0x0, 0xb, [@ms_header={0x7, 0x24, 0x1, 0x9, 0x7}, @ms_header={0x7, 0x24, 0x1, 0x6, 0x7}, @midi_in_jack={0x6, 0x24, 0x2, 0x0, 0x46, 0xd9}], [{{0x9, 0x5, 0x9, 0xc, 0x200, 0x2, 0xe, 0x5, {0x11, 0x25, 0x1, 0xd, "546437545c80df0fdbb61ec5a2"}}}, {{0x9, 0x5, 0xe, 0x2, 0x20, 0x7, 0x2, 0x56, {0x13, 0x25, 0x1, 0xf, "ee741ae2bed6df07fb98b3bb0c8dd4"}}}, {{0x9, 0x5, 0x80, 0x0, 0x0, 0x6, 0x71, 0x3d, {0x4}}}, {{0x9, 0x5, 0xc, 0x1, 0xaa7268393f5c301d, 0x7, 0x0, 0x50, {0x14, 0x25, 0x1, 0x10, "8ecf5b36c6a07b22eb4de883b96872d3"}}}, {{0x9, 0x5, 0xf, 0x10, 0x440, 0x3, 0x4, 0x7f, {0x13, 0x25, 0x1, 0xf, "2647410a6b85919e501ae454009026"}}}]}}}}}]}}, &(0x7f0000000400)={0xa, &(0x7f0000000100)={0xa, 0x6, 0x110, 0x4, 0x3, 0x8, 0x40, 0x30}, 0xc8, &(0x7f0000000140)={0x5, 0xf, 0xc8, 0x6, [@ss_cap={0xa, 0x10, 0x3, 0x2, 0x2, 0x8, 0x30, 0x4}, @generic={0x93, 0x10, 0x2, "2109ea52998e4479e8371cf41701aca5a9be51bd037e8e318a9d882cba6676c0a0431115303ca07519e898c2ec19ecd1c59ac9138cfc58051710b5ab509b43ec33aa3eb9c23f9c1202ce721ff44898c334ffafe6a9ca8d85ad6eddc14ebc9e918d9bef9e126995b3b71bdc1bf7692593a3682eb848e538871f7ac331c1ed659477da12053ec8715e4ecb6f9587348578"}, @ss_cap={0xa, 0x10, 0x3, 0x0, 0x8, 0x9, 0x5, 0x3}, @ss_cap={0xa, 0x10, 0x3, 0x2, 0x0, 0x6, 0x1, 0x1}, @wireless={0xb, 0x10, 0x1, 0x8, 0x12, 0x2, 0x3, 0x8, 0x2b}, @ext_cap={0x7, 0x10, 0x2, 0x4, 0xe, 0x0, 0x5b71}]}, 0x4, [{0xf1, &(0x7f0000000240)=@string={0xf1, 0x3, "7d324a2778faa9efa779e04a96a8383f41a17d4ec1536709c6c473cacf735943356c0a2e54b6169a9b9aa9e4991f010520fb7965a40895dbb91efd604eedb944663f6d392049e0618f59739194ba2b5161b2d66776ccd7da1789d65d7a3df0e0f45f499d07e824f608ab03d3362302de2b240d8bde132c4c53899722d7b4ab253121774fbb4016f7334235b282e828341adc72b1f8959a889d52f1435f5863bcac4381f7b47541c3c277ba793e59f68d1232a658f92eac2035ce01a682ad3d2cc63b2b0e2b52ec6e4b151a7b4dfcf42401972016b41ecd6977f4ab707fd0eda36a6fa286ecaf7dc0debd51fe840959"}}, {0x4, &(0x7f0000000340)=@lang_id={0x4, 0x3, 0x403}}, {0x4, &(0x7f0000000380)=@lang_id={0x4, 0x3, 0x1407}}, {0x4, &(0x7f00000003c0)=@lang_id={0x4, 0x3, 0x445}}]}) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-mmap-syz_usb_connect-ioctl$KVM_SET_REGS-ioctl$KVM_RUN detailed listing: executing program 0: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000440), 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1000003, 0x13, r2, 0x0) syz_usb_connect(0x2, 0x24, &(0x7f00000000c0)={{0x12, 0x1, 0x201, 0x80, 0x1b, 0xcd, 0x8, 0x102c, 0x6151, 0x1108, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x10, 0x6, 0x50, 0xa, "", [{{0x9, 0x4, 0xcb, 0x2, 0x0, 0x99, 0x23, 0xf9, 0xa}}]}}]}}, &(0x7f0000000440)={0x0, 0x0, 0x0, 0x0}) ioctl$KVM_SET_REGS(r2, 0x4090ae82, &(0x7f00000000c0)={[0x400007fc, 0xffffffffffffffff, 0x81, 0x4, 0x1, 0x0, 0x3, 0x12, 0x1, 0x4, 0x0, 0x7, 0x7, 0x1, 0x100000000001, 0x6], 0x1000}) ioctl$KVM_RUN(r2, 0xae80, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-openat$ptmx-write$binfmt_aout-ioctl$TCSETS-syz_open_pts-dup3-ioctl$TIOCSETD-syz_usb_connect-syz_usb_connect-syz_usb_control_io$printer-openat$kvm-openat$kvm-syz_open_dev$usbfs-ioctl$USBDEVFS_CLAIM_PORT detailed listing: executing program 0: openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x41, 0x0) (async) r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x41, 0x0) write$binfmt_aout(r0, &(0x7f00000000c0)=ANY=[], 0xff2e) ioctl$TCSETS(r0, 0x40045431, &(0x7f0000000080)={0x0, 0x0, 0xfffffff6, 0x0, 0x1, "0062007d82000000000000002240f7ffffff00"}) r1 = syz_open_pts(r0, 0x0) dup3(r1, r0, 0x0) ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000140)=0x3) syz_usb_connect(0x0, 0x62, &(0x7f00000002c0)=ANY=[@ANYBLOB="12010000fb5d7d086d04c308166b0102030109025000010000000009041f0000ff0100000a24010400050201020724070500000508240805040004960d24060101030200010006000609240305050306058109240306010304050507240405"], 0x0) (async) r2 = syz_usb_connect(0x0, 0x62, &(0x7f00000002c0)=ANY=[@ANYBLOB="12010000fb5d7d086d04c308166b0102030109025000010000000009041f0000ff0100000a24010400050201020724070500000508240805040004960d24060101030200010006000609240305050306058109240306010304050507240405"], 0x0) syz_usb_control_io$printer(r2, &(0x7f00000007c0)={0x14, 0x0, &(0x7f0000000700)={0x0, 0x3, 0x2, @string={0x2}}}, 0x0) openat$kvm(0xffffffffffffff9c, 0x0, 0x0, 0x0) (async) openat$kvm(0xffffffffffffff9c, 0x0, 0x0, 0x0) r3 = syz_open_dev$usbfs(&(0x7f0000000100), 0x75, 0x1a1281) ioctl$USBDEVFS_CLAIM_PORT(r3, 0x8008550e, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-mbind-openat$binderfs-ioctl$BINDER_SET_CONTEXT_MGR_EXT-openat$binderfs-ioctl$BINDER_WRITE_READ-dup3-openat$binderfs-mmap$binder-ioctl$BINDER_SET_CONTEXT_MGR_EXT-ioctl$BINDER_WRITE_READ-ioctl$BINDER_WRITE_READ-madvise-accept4$packet-recvfrom$packet-syz_emit_ethernet-openat$ptmx-write$binfmt_aout-ioctl$TCSETS-syz_open_pts-ioctl$sock_inet_udp_SIOCINQ-socket$inet6_sctp-socket$inet6_sctp-syz_usb_connect$uac1-syz_usb_control_io-syz_usb_control_io-syz_usb_control_io$uac1-shutdown-getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3-getsockopt$inet_sctp6_SCTP_PRIMARY_ADDR detailed listing: executing program 0: mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeef, 0x8031, 0xffffffffffffffff, 0x0) mbind(&(0x7f0000000000/0x600000)=nil, 0x600000, 0x3, &(0x7f0000000080)=0xb, 0x8, 0x0) r0 = openat$binderfs(0xffffffffffffff9c, &(0x7f0000000380)='./binderfs/binder0\x00', 0x2, 0x0) ioctl$BINDER_SET_CONTEXT_MGR_EXT(r0, 0x4018620d, &(0x7f0000003280)={0x73622a85, 0xa, 0x4}) r1 = openat$binderfs(0xffffffffffffff9c, &(0x7f0000000200)='./binderfs/binder0\x00', 0x0, 0x0) ioctl$BINDER_WRITE_READ(r1, 0xc0306201, &(0x7f0000000080)={0x8, 0x0, &(0x7f0000000180)=[@acquire], 0xffffffffffffff47, 0x0, 0x0}) r2 = dup3(r1, r0, 0x0) r3 = openat$binderfs(0xffffffffffffff9c, &(0x7f0000000540)='./binderfs/binder0\x00', 0x802, 0x0) mmap$binder(&(0x7f0000ffd000/0x3000)=nil, 0x3000, 0x1, 0x11, r3, 0x10000000000) ioctl$BINDER_SET_CONTEXT_MGR_EXT(r3, 0x4018620d, &(0x7f0000000040)={0x73622a85, 0x10a, 0xfffffffffffffffd}) ioctl$BINDER_WRITE_READ(r1, 0xc0306201, &(0x7f00000003c0)={0x8, 0x0, &(0x7f0000000340)=[@acquire], 0xffffffffffffff67, 0x0, 0x0}) ioctl$BINDER_WRITE_READ(r2, 0xc0306201, &(0x7f0000000000)={0x4, 0x0, &(0x7f0000000940)=[@enter_looper], 0x0, 0x0, 0x0}) madvise(&(0x7f0000000000/0x600000)=nil, 0x600000, 0x15) r4 = accept4$packet(0xffffffffffffffff, &(0x7f0000000000)={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @local}, &(0x7f0000000040)=0x14, 0x800) recvfrom$packet(r4, &(0x7f00000000c0)=""/46, 0x2e, 0x40000020, 0x0, 0x0) syz_emit_ethernet(0x3e, &(0x7f0000000600)=ANY=[@ANYBLOB="000000000000ffffffffff08010000000190787f000001ac1414aa030490780304fffe450000000000ffff00330000ac14140ae000000100000000000000091950b141d8cfae90b81ca6387bc3f954e78c73c18c40cac78fe51634dcfd531b27cd9c0c3a7a29239d9c2c50d4fb02f53a993fe867b910fe847205a068711fea1ff263d8b67d06559508fc490f0000f09625e76a075888916dd94100cd703c631806fdc126c3caf7749f43a21ce5aa1f5a765fbd0a29cf5ff3d79c991095a262455669"], 0x0) r5 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x41, 0x0) write$binfmt_aout(r5, &(0x7f0000000200)=ANY=[], 0xff2e) ioctl$TCSETS(r5, 0x40045431, &(0x7f0000000140)={0x0, 0x0, 0xfffffff9, 0x161, 0x15, "00020000f7fd00"}) r6 = syz_open_pts(r5, 0xc0000) ioctl$sock_inet_udp_SIOCINQ(r6, 0x541b, &(0x7f00000004c0)) socket$inet6_sctp(0xa, 0x5, 0x84) r7 = socket$inet6_sctp(0xa, 0x5, 0x84) r8 = syz_usb_connect$uac1(0x0, 0xb1, &(0x7f0000000240)=ANY=[@ANYBLOB="12010000000000106b1d0101890f0000030109029f0003010000000904000000010100000a24010000000201020d24060000030800000031ce21c798329740594c137d0000000c24020201010608000010000c24020000000300000000000924060006010000000924030000000005000b2406050001", @ANYRESOCT=0x0], 0x0) syz_usb_control_io(r8, &(0x7f00000003c0)={0x2c, 0x0, &(0x7f0000000580)=ANY=[@ANYBLOB="aaa47e26d2f81c3a675cc43a8db3072d91a15538266a268ccb5274de6cd0393d1597e86e509b899c2ed2ebb2c5765f115315724c908d17f19dcf6a814911edac4ce461bd1749a9020e1cbdc41997bd9747dbb3b5a502e611a784fd"], 0x0, 0x0, 0x0}, 0x0) syz_usb_control_io(r8, 0x0, &(0x7f0000000d40)={0x84, &(0x7f0000000900)=ANY=[@ANYBLOB="0016020000008a"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) syz_usb_control_io$uac1(r8, 0x0, &(0x7f0000001180)={0x44, 0x0, 0x0, 0x0, 0x0, &(0x7f0000000040)=ANY=[@ANYBLOB="2082010090d71c"], 0x0, 0x0, 0x0}) shutdown(r7, 0x0) getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r7, 0x84, 0x6f, &(0x7f0000000200)={0x0, 0x1c, &(0x7f0000000480)=[@in6={0xa, 0x4e20, 0x3025, @rand_addr=' \x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02', 0xfffffff9}]}, &(0x7f0000000140)=0x10) getsockopt$inet_sctp6_SCTP_PRIMARY_ADDR(r7, 0x84, 0x7a, &(0x7f0000000340)={r9, @in6={{0xa, 0x4e20, 0x81, @remote}}}, &(0x7f0000000040)=0x84) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$evdev-openat-mmap-socket$inet_tcp-bind$inet-setsockopt$inet_tcp_TCP_CONGESTION-connect$inet-prctl$PR_SET_SYSCALL_USER_DISPATCH_ON-mmap-sendto$inet-setsockopt$inet_tcp_TCP_CONGESTION-syz_open_dev$admmidi-readv-read$midi-openat$sequencer2-request_key-request_key-recvfrom$inet-shutdown-fsopen-fsconfig$FSCONFIG_CMD_CREATE-bpf$OBJ_GET_PROG-ioctl$EVIOCSABS2F-socket$netlink-bind$netlink-setsockopt$sock_int-socket$nl_route-socket$nl_generic detailed listing: executing program 0: syz_usb_connect(0x3, 0x34, &(0x7f00000004c0)=ANY=[@ANYBLOB="12010000b5e67420ac0592027388010203010902220001000000440904770001039a02000905000100000000000705e3", @ANYBLOB="8b75"], 0x0) r0 = syz_open_dev$evdev(&(0x7f0000003880), 0x4, 0x2) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\x00', 0x200, 0x3) mmap(&(0x7f0000000000/0x600000)=nil, 0x600000, 0x27ffff7, 0x4012011, r1, 0x0) r2 = socket$inet_tcp(0x2, 0x1, 0x0) bind$inet(r2, &(0x7f0000000280)={0x2, 0x4e21, @multicast2}, 0x10) setsockopt$inet_tcp_TCP_CONGESTION(r2, 0x6, 0xd, &(0x7f0000000040)='cdg', 0x3) connect$inet(r2, &(0x7f0000000180)={0x2, 0x4e21, @local}, 0x10) prctl$PR_SET_SYSCALL_USER_DISPATCH_ON(0x3b, 0x1, 0x7, 0xff, &(0x7f0000006680)) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f07ebbeef, 0x8031, r1, 0x0) sendto$inet(r2, &(0x7f0000000900)="2e552f5d9fd8b0d9627c4980f0d1ea2bf8f617a682acd2841acd878bd68344d4f50f83b0c51fa9135a01c95d4a128ec8b12d01010000a44c4505ba9a36f2cf4cc5e8308126d0a2c3b9d24e57c5011376b6263e2a1258eec1eb72bedea3eb5ccf73eb081b4c6d5faa998d7b795c057dd757d14200a8", 0x75, 0x12, 0x0, 0x0) setsockopt$inet_tcp_TCP_CONGESTION(r2, 0x6, 0xd, &(0x7f0000000000)='vegas', 0x5) r3 = syz_open_dev$admmidi(&(0x7f00000001c0), 0x20, 0x0) readv(r3, &(0x7f00000000c0)=[{&(0x7f0000001fc0)=""/209, 0xd1}], 0x1) read$midi(r3, &(0x7f00000002c0)=""/91, 0x5b) openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000140), 0x8417f, 0x0) request_key(&(0x7f00000013c0)='id_resolver\x00', &(0x7f0000001400)={'syz', 0x0}, &(0x7f0000001440)='\x00', 0xffffffffffffffff) request_key(&(0x7f00000036c0)='id_resolver\x00', &(0x7f0000003700)={'syz', 0x0}, 0x0, 0x0) recvfrom$inet(r2, &(0x7f0000000100), 0x0, 0xc9100120, 0x0, 0x0) shutdown(r2, 0x1) r4 = fsopen(&(0x7f0000000340)='overlay\x00', 0x1) fsconfig$FSCONFIG_CMD_CREATE(r4, 0x6, 0x0, 0x0, 0x0) bpf$OBJ_GET_PROG(0x7, &(0x7f00000000c0)=@o_path={&(0x7f0000000380)='./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\x00', 0x0, 0x4000, r4}, 0x18) ioctl$EVIOCSABS2F(r0, 0x401845ef, 0x0) r5 = socket$netlink(0x10, 0x3, 0xf) bind$netlink(r5, &(0x7f0000000a40)={0x10, 0x0, 0x25dfdbfb, 0x2ffffffff}, 0xc) setsockopt$sock_int(r5, 0x1, 0x8, &(0x7f0000000000), 0x4) socket$nl_route(0x10, 0x3, 0x0) socket$nl_generic(0x10, 0x3, 0x10) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_netfilter-sendmsg$NFT_BATCH-prlimit64-sched_setscheduler-sched_setaffinity-getpid-sched_setscheduler-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setaffinity-keyctl$clear-syz_open_procfs-preadv-sendmsg$nl_route_sched-prlimit64-syz_open_dev$usbfs-syz_open_dev$usbfs-ioctl$USBDEVFS_ALLOW_SUSPEND-socket-write-setsockopt$sock_int-sendto-ioctl$USBDEVFS_DISCONNECT_CLAIM-ioctl$USBDEVFS_ALLOW_SUSPEND-mkdirat$cgroup_root-write$cgroup_int-write$cgroup_pid-ioctl$USBDEVFS_SETINTERFACE detailed listing: executing program 0: r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r0, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000480)=ANY=[@ANYBLOB="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"], 0x114}}, 0x0) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x80000008b}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8) sched_setaffinity(0x0, 0x8, &(0x7f00000002c0)=0x2) r1 = getpid() sched_setscheduler(r1, 0x1, &(0x7f0000000100)=0x5) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000001480)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r2, &(0x7f00000004c0)=@file={0x0, './file0\x00'}, 0x6e) sendmmsg$unix(r3, &(0x7f00000bd000), 0x318, 0x0) recvmmsg(r2, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setaffinity(0x0, 0x8, &(0x7f00000002c0)=0x2) keyctl$clear(0x3, 0xfffffffffffffffd) r4 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000040)='net/arp\x00') preadv(r4, 0x0, 0x0, 0x6, 0x0) sendmsg$nl_route_sched(r4, &(0x7f0000000000)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x20000000}, 0x0) prlimit64(r1, 0xe, &(0x7f0000000280)={0x0, 0x10}, 0x0) r5 = syz_open_dev$usbfs(&(0x7f0000000100), 0x76, 0x101b01) r6 = syz_open_dev$usbfs(&(0x7f0000000080), 0x206, 0x20182) ioctl$USBDEVFS_ALLOW_SUSPEND(r6, 0x5522) r7 = socket(0x10, 0x803, 0x0) write(r7, 0x0, 0x0) setsockopt$sock_int(r7, 0x1, 0x8, 0x0, 0x0) sendto(r7, &(0x7f0000000380), 0x0, 0x20000090, 0x0, 0x0) ioctl$USBDEVFS_DISCONNECT_CLAIM(r5, 0x8108551b, &(0x7f0000000140)={0x0, 0x2, "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"}) ioctl$USBDEVFS_ALLOW_SUSPEND(r5, 0x5522) mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup/syz0\x00', 0x1ff) write$cgroup_int(0xffffffffffffffff, &(0x7f0000000200)=0x1, 0x12) write$cgroup_pid(0xffffffffffffffff, 0x0, 0x0) ioctl$USBDEVFS_SETINTERFACE(r5, 0x80045510, &(0x7f0000000040)={0x0, 0x200000}) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_netfilter-sendmsg$NFT_BATCH-prlimit64-sched_setscheduler-sched_setaffinity-getpid-sched_setscheduler-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setaffinity-keyctl$clear-syz_open_procfs-preadv-sendmsg$nl_route_sched-prlimit64-syz_open_dev$usbfs-syz_open_dev$usbfs-ioctl$USBDEVFS_ALLOW_SUSPEND-socket-write-setsockopt$sock_int-sendto-ioctl$USBDEVFS_DISCONNECT_CLAIM-ioctl$USBDEVFS_ALLOW_SUSPEND-mkdirat$cgroup_root-write$cgroup_int-write$cgroup_pid-ioctl$USBDEVFS_SETINTERFACE detailed listing: executing program 0: r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r0, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000480)=ANY=[@ANYBLOB="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"], 0x114}}, 0x0) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x80000008b}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8) sched_setaffinity(0x0, 0x8, &(0x7f00000002c0)=0x2) r1 = getpid() sched_setscheduler(r1, 0x1, &(0x7f0000000100)=0x5) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000001480)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r2, &(0x7f00000004c0)=@file={0x0, './file0\x00'}, 0x6e) sendmmsg$unix(r3, &(0x7f00000bd000), 0x318, 0x0) recvmmsg(r2, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setaffinity(0x0, 0x8, &(0x7f00000002c0)=0x2) keyctl$clear(0x3, 0xfffffffffffffffd) r4 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000040)='net/arp\x00') preadv(r4, 0x0, 0x0, 0x6, 0x0) sendmsg$nl_route_sched(r4, &(0x7f0000000000)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x20000000}, 0x0) prlimit64(r1, 0xe, &(0x7f0000000280)={0x0, 0x10}, 0x0) r5 = syz_open_dev$usbfs(&(0x7f0000000100), 0x76, 0x101b01) r6 = syz_open_dev$usbfs(&(0x7f0000000080), 0x206, 0x20182) ioctl$USBDEVFS_ALLOW_SUSPEND(r6, 0x5522) r7 = socket(0x10, 0x803, 0x0) write(r7, 0x0, 0x0) setsockopt$sock_int(r7, 0x1, 0x8, 0x0, 0x0) sendto(r7, &(0x7f0000000380), 0x0, 0x20000090, 0x0, 0x0) ioctl$USBDEVFS_DISCONNECT_CLAIM(r5, 0x8108551b, &(0x7f0000000140)={0x0, 0x2, "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"}) ioctl$USBDEVFS_ALLOW_SUSPEND(r5, 0x5522) mkdirat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup/syz0\x00', 0x1ff) write$cgroup_int(0xffffffffffffffff, &(0x7f0000000200)=0x1, 0x12) write$cgroup_pid(0xffffffffffffffff, 0x0, 0x0) ioctl$USBDEVFS_SETINTERFACE(r5, 0x80045510, &(0x7f0000000040)={0x0, 0x200000}) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): madvise-syz_open_dev$usbfs-mmap-syz_clone-ioctl$XFS_IOC_PATH_TO_HANDLE-ioctl$ifreq_SIOCGIFINDEX_vcan-connect$inet6-sendto$packet-socket-ioctl$sock_ipv6_tunnel_SIOCADDTUNNEL-socket$inet6_sctp detailed listing: executing program 0: madvise(&(0x7f0000bdc000/0x4000)=nil, 0x86ac726dff2f4713, 0xa) r0 = syz_open_dev$usbfs(&(0x7f00000000c0), 0x204, 0x82) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) syz_clone(0x648e7000, 0x0, 0x0, 0x0, 0x0, 0x0) ioctl$XFS_IOC_PATH_TO_HANDLE(r0, 0xc0385869, &(0x7f0000000140)={r0, &(0x7f0000000000)='/dev/bus/usb/00#/00#\x00', 0x0, &(0x7f0000000040)={@_ha_fsid={[0x2, 0x5]}, {0x0, 0xff, 0x6, 0x7}}, 0x101, &(0x7f0000000080)={@_ha_fsid}, &(0x7f0000000100)=0x6d6}) ioctl$ifreq_SIOCGIFINDEX_vcan(0xffffffffffffffff, 0x8933, &(0x7f0000000240)={'vxcan1\x00', 0x0}) connect$inet6(r1, &(0x7f0000000280)={0xa, 0x4e22, 0xb48, @empty, 0x5}, 0x1c) sendto$packet(r1, &(0x7f0000000180)="08f97b89e037c56277ff65a3da74d555e01e1af5808d23ab6604650c9e42fc70195dccdc7d2a495973e35b1a946264a79f268fa864a091598f1e49523017e44df567d28c2a5b487772caeff748312d2b6a62bfd2e7868b36ae7c4f5017ac7d46f70efb9b65a16c8b5f6e7b22ff4f9a222be0f014742a928a2f3c1ec86f88323bc06307db94c9fab7e6bef914", 0x8c, 0x20000810, &(0x7f00000002c0)={0x11, 0x17, r2}, 0x14) r3 = socket(0x10, 0x2, 0x0) ioctl$sock_ipv6_tunnel_SIOCADDTUNNEL(r3, 0x89f1, &(0x7f0000000000)={'ip6_vti0\x00', &(0x7f0000000080)={'syztnl2\x00', 0x0, 0x29, 0x7e, 0x21, 0x1, 0x60, @dev={0xfe, 0x80, '\x00', 0x43}, @ipv4={'\x00', '\xff\xff', @initdev={0xac, 0x1e, 0x1, 0x0}}, 0x1, 0x8, 0x25a1, 0x40}}) socket$inet6_sctp(0xa, 0x5, 0x84) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): madvise-syz_open_dev$usbfs-mmap-syz_clone-ioctl$XFS_IOC_PATH_TO_HANDLE-ioctl$ifreq_SIOCGIFINDEX_vcan-connect$inet6-sendto$packet-socket-ioctl$sock_ipv6_tunnel_SIOCADDTUNNEL-socket$inet6_sctp detailed listing: executing program 0: madvise(&(0x7f0000bdc000/0x4000)=nil, 0x86ac726dff2f4713, 0xa) r0 = syz_open_dev$usbfs(&(0x7f00000000c0), 0x204, 0x82) mmap(&(0x7f0000000000/0x400000)=nil, 0x400000, 0x1000002, 0x11012, r0, 0x0) syz_clone(0x648e7000, 0x0, 0x0, 0x0, 0x0, 0x0) ioctl$XFS_IOC_PATH_TO_HANDLE(r0, 0xc0385869, &(0x7f0000000140)={r0, &(0x7f0000000000)='/dev/bus/usb/00#/00#\x00', 0x0, &(0x7f0000000040)={@_ha_fsid={[0x2, 0x5]}, {0x0, 0xff, 0x6, 0x7}}, 0x101, &(0x7f0000000080)={@_ha_fsid}, &(0x7f0000000100)=0x6d6}) ioctl$ifreq_SIOCGIFINDEX_vcan(0xffffffffffffffff, 0x8933, &(0x7f0000000240)={'vxcan1\x00', 0x0}) connect$inet6(r1, &(0x7f0000000280)={0xa, 0x4e22, 0xb48, @empty, 0x5}, 0x1c) sendto$packet(r1, &(0x7f0000000180)="08f97b89e037c56277ff65a3da74d555e01e1af5808d23ab6604650c9e42fc70195dccdc7d2a495973e35b1a946264a79f268fa864a091598f1e49523017e44df567d28c2a5b487772caeff748312d2b6a62bfd2e7868b36ae7c4f5017ac7d46f70efb9b65a16c8b5f6e7b22ff4f9a222be0f014742a928a2f3c1ec86f88323bc06307db94c9fab7e6bef914", 0x8c, 0x20000810, &(0x7f00000002c0)={0x11, 0x17, r2}, 0x14) r3 = socket(0x10, 0x2, 0x0) ioctl$sock_ipv6_tunnel_SIOCADDTUNNEL(r3, 0x89f1, &(0x7f0000000000)={'ip6_vti0\x00', &(0x7f0000000080)={'syztnl2\x00', 0x0, 0x29, 0x7e, 0x21, 0x1, 0x60, @dev={0xfe, 0x80, '\x00', 0x43}, @ipv4={'\x00', '\xff\xff', @initdev={0xac, 0x1e, 0x1, 0x0}}, 0x1, 0x8, 0x25a1, 0x40}}) socket$inet6_sctp(0xa, 0x5, 0x84) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbmon-bpf$PROG_LOAD_XDP-prctl$PR_SET_MM_MAP-bpf$BPF_GET_MAP_INFO-io_uring_setup-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-io_uring_enter-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C-write detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbmon(&(0x7f0000000000), 0x6, 0x200) bpf$PROG_LOAD_XDP(0x5, &(0x7f0000000200)={0x6, 0x3, 0x0, 0x0, 0x1, 0x5}, 0x94) prctl$PR_SET_MM_MAP(0x23, 0xe, &(0x7f0000000080)={&(0x7f0000ff0000/0x1000)=nil, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000003000/0x3000)=nil, &(0x7f0000ffd000/0x1000)=nil, &(0x7f0000ff8000/0x4000)=nil, &(0x7f0000000000/0x4000)=nil, &(0x7f0000000000/0x3000)=nil, &(0x7f0000ff7000/0x1000)=nil, &(0x7f0000ffc000/0x3000)=nil, &(0x7f0000ffd000/0x2000)=nil, &(0x7f0000ffa000/0x2000)=nil, 0x0}, 0x68) bpf$BPF_GET_MAP_INFO(0xf, &(0x7f0000000080)={0xffffffffffffffff, 0x58}, 0x10) r1 = io_uring_setup(0x1b7b, &(0x7f0000000040)={0x0, 0x971, 0x1f480, 0xffffffff, 0xb7}) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000100)={0x11, 0x0, 0x0, &(0x7f0000000000)='syzkaller\x00', 0x0, 0x0, 0x0, 0x0, 0x4d}, 0x94) io_uring_enter(r1, 0x12a, 0xffffffdc, 0x17, 0x0, 0x0) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) r2 = syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) write(r2, &(0x7f0000000140)="73a645b9810e451827bbd6e2c106c13e95ccc390ced94ff7a79777d469b9663911b7590736f8ab850f3443d48d856f59efbccb3ca163c7f819b93ed05f5a48d49e", 0x41) program crashed: INFO: task hung in em28xx_i2c_unregister single: successfully extracted reproducer found reproducer with 12 syscalls minimizing guilty program testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbmon-bpf$PROG_LOAD_XDP-prctl$PR_SET_MM_MAP-bpf$BPF_GET_MAP_INFO-io_uring_setup-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-io_uring_enter-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbmon(&(0x7f0000000000), 0x6, 0x200) bpf$PROG_LOAD_XDP(0x5, &(0x7f0000000200)={0x6, 0x3, 0x0, 0x0, 0x1, 0x5}, 0x94) prctl$PR_SET_MM_MAP(0x23, 0xe, &(0x7f0000000080)={&(0x7f0000ff0000/0x1000)=nil, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000003000/0x3000)=nil, &(0x7f0000ffd000/0x1000)=nil, &(0x7f0000ff8000/0x4000)=nil, &(0x7f0000000000/0x4000)=nil, &(0x7f0000000000/0x3000)=nil, &(0x7f0000ff7000/0x1000)=nil, &(0x7f0000ffc000/0x3000)=nil, &(0x7f0000ffd000/0x2000)=nil, &(0x7f0000ffa000/0x2000)=nil, 0x0}, 0x68) bpf$BPF_GET_MAP_INFO(0xf, &(0x7f0000000080)={0xffffffffffffffff, 0x58}, 0x10) r1 = io_uring_setup(0x1b7b, &(0x7f0000000040)={0x0, 0x971, 0x1f480, 0xffffffff, 0xb7}) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000100)={0x11, 0x0, 0x0, &(0x7f0000000000)='syzkaller\x00', 0x0, 0x0, 0x0, 0x0, 0x4d}, 0x94) io_uring_enter(r1, 0x12a, 0xffffffdc, 0x17, 0x0, 0x0) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program crashed: INFO: task hung in em28xx_i2c_unregister testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbmon-bpf$PROG_LOAD_XDP-prctl$PR_SET_MM_MAP-bpf$BPF_GET_MAP_INFO-io_uring_setup-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-io_uring_enter-syz_open_dev$usbfs-syz_usb_disconnect detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbmon(&(0x7f0000000000), 0x6, 0x200) bpf$PROG_LOAD_XDP(0x5, &(0x7f0000000200)={0x6, 0x3, 0x0, 0x0, 0x1, 0x5}, 0x94) prctl$PR_SET_MM_MAP(0x23, 0xe, &(0x7f0000000080)={&(0x7f0000ff0000/0x1000)=nil, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000003000/0x3000)=nil, &(0x7f0000ffd000/0x1000)=nil, &(0x7f0000ff8000/0x4000)=nil, &(0x7f0000000000/0x4000)=nil, &(0x7f0000000000/0x3000)=nil, &(0x7f0000ff7000/0x1000)=nil, &(0x7f0000ffc000/0x3000)=nil, &(0x7f0000ffd000/0x2000)=nil, &(0x7f0000ffa000/0x2000)=nil, 0x0}, 0x68) bpf$BPF_GET_MAP_INFO(0xf, &(0x7f0000000080)={0xffffffffffffffff, 0x58}, 0x10) r1 = io_uring_setup(0x1b7b, &(0x7f0000000040)={0x0, 0x971, 0x1f480, 0xffffffff, 0xb7}) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000100)={0x11, 0x0, 0x0, &(0x7f0000000000)='syzkaller\x00', 0x0, 0x0, 0x0, 0x0, 0x4d}, 0x94) io_uring_enter(r1, 0x12a, 0xffffffdc, 0x17, 0x0, 0x0) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbmon-bpf$PROG_LOAD_XDP-prctl$PR_SET_MM_MAP-bpf$BPF_GET_MAP_INFO-io_uring_setup-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-io_uring_enter-syz_open_dev$usbfs-syz_open_dev$I2C detailed listing: executing program 0: syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbmon(&(0x7f0000000000), 0x6, 0x200) bpf$PROG_LOAD_XDP(0x5, &(0x7f0000000200)={0x6, 0x3, 0x0, 0x0, 0x1, 0x5}, 0x94) prctl$PR_SET_MM_MAP(0x23, 0xe, &(0x7f0000000080)={&(0x7f0000ff0000/0x1000)=nil, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000003000/0x3000)=nil, &(0x7f0000ffd000/0x1000)=nil, &(0x7f0000ff8000/0x4000)=nil, &(0x7f0000000000/0x4000)=nil, &(0x7f0000000000/0x3000)=nil, &(0x7f0000ff7000/0x1000)=nil, &(0x7f0000ffc000/0x3000)=nil, &(0x7f0000ffd000/0x2000)=nil, &(0x7f0000ffa000/0x2000)=nil, 0x0}, 0x68) bpf$BPF_GET_MAP_INFO(0xf, &(0x7f0000000080)={0xffffffffffffffff, 0x58}, 0x10) r0 = io_uring_setup(0x1b7b, &(0x7f0000000040)={0x0, 0x971, 0x1f480, 0xffffffff, 0xb7}) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000100)={0x11, 0x0, 0x0, &(0x7f0000000000)='syzkaller\x00', 0x0, 0x0, 0x0, 0x0, 0x4d}, 0x94) io_uring_enter(r0, 0x12a, 0xffffffdc, 0x17, 0x0, 0x0) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbmon-bpf$PROG_LOAD_XDP-prctl$PR_SET_MM_MAP-bpf$BPF_GET_MAP_INFO-io_uring_setup-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-io_uring_enter-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbmon(&(0x7f0000000000), 0x6, 0x200) bpf$PROG_LOAD_XDP(0x5, &(0x7f0000000200)={0x6, 0x3, 0x0, 0x0, 0x1, 0x5}, 0x94) prctl$PR_SET_MM_MAP(0x23, 0xe, &(0x7f0000000080)={&(0x7f0000ff0000/0x1000)=nil, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000003000/0x3000)=nil, &(0x7f0000ffd000/0x1000)=nil, &(0x7f0000ff8000/0x4000)=nil, &(0x7f0000000000/0x4000)=nil, &(0x7f0000000000/0x3000)=nil, &(0x7f0000ff7000/0x1000)=nil, &(0x7f0000ffc000/0x3000)=nil, &(0x7f0000ffd000/0x2000)=nil, &(0x7f0000ffa000/0x2000)=nil, 0x0}, 0x68) bpf$BPF_GET_MAP_INFO(0xf, &(0x7f0000000080)={0xffffffffffffffff, 0x58}, 0x10) r1 = io_uring_setup(0x1b7b, &(0x7f0000000040)={0x0, 0x971, 0x1f480, 0xffffffff, 0xb7}) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000100)={0x11, 0x0, 0x0, &(0x7f0000000000)='syzkaller\x00', 0x0, 0x0, 0x0, 0x0, 0x4d}, 0x94) io_uring_enter(r1, 0x12a, 0xffffffdc, 0x17, 0x0, 0x0) syz_usb_disconnect(r0) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbmon-bpf$PROG_LOAD_XDP-prctl$PR_SET_MM_MAP-bpf$BPF_GET_MAP_INFO-io_uring_setup-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbmon(&(0x7f0000000000), 0x6, 0x200) bpf$PROG_LOAD_XDP(0x5, &(0x7f0000000200)={0x6, 0x3, 0x0, 0x0, 0x1, 0x5}, 0x94) prctl$PR_SET_MM_MAP(0x23, 0xe, &(0x7f0000000080)={&(0x7f0000ff0000/0x1000)=nil, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000003000/0x3000)=nil, &(0x7f0000ffd000/0x1000)=nil, &(0x7f0000ff8000/0x4000)=nil, &(0x7f0000000000/0x4000)=nil, &(0x7f0000000000/0x3000)=nil, &(0x7f0000ff7000/0x1000)=nil, &(0x7f0000ffc000/0x3000)=nil, &(0x7f0000ffd000/0x2000)=nil, &(0x7f0000ffa000/0x2000)=nil, 0x0}, 0x68) bpf$BPF_GET_MAP_INFO(0xf, &(0x7f0000000080)={0xffffffffffffffff, 0x58}, 0x10) io_uring_setup(0x1b7b, &(0x7f0000000040)={0x0, 0x971, 0x1f480, 0xffffffff, 0xb7}) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000100)={0x11, 0x0, 0x0, &(0x7f0000000000)='syzkaller\x00', 0x0, 0x0, 0x0, 0x0, 0x4d}, 0x94) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program crashed: INFO: task hung in em28xx_i2c_unregister testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbmon-bpf$PROG_LOAD_XDP-prctl$PR_SET_MM_MAP-bpf$BPF_GET_MAP_INFO-io_uring_setup-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbmon(&(0x7f0000000000), 0x6, 0x200) bpf$PROG_LOAD_XDP(0x5, &(0x7f0000000200)={0x6, 0x3, 0x0, 0x0, 0x1, 0x5}, 0x94) prctl$PR_SET_MM_MAP(0x23, 0xe, &(0x7f0000000080)={&(0x7f0000ff0000/0x1000)=nil, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000003000/0x3000)=nil, &(0x7f0000ffd000/0x1000)=nil, &(0x7f0000ff8000/0x4000)=nil, &(0x7f0000000000/0x4000)=nil, &(0x7f0000000000/0x3000)=nil, &(0x7f0000ff7000/0x1000)=nil, &(0x7f0000ffc000/0x3000)=nil, &(0x7f0000ffd000/0x2000)=nil, &(0x7f0000ffa000/0x2000)=nil, 0x0}, 0x68) bpf$BPF_GET_MAP_INFO(0xf, &(0x7f0000000080)={0xffffffffffffffff, 0x58}, 0x10) io_uring_setup(0x1b7b, &(0x7f0000000040)={0x0, 0x971, 0x1f480, 0xffffffff, 0xb7}) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program crashed: INFO: task hung in em28xx_i2c_unregister testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbmon-bpf$PROG_LOAD_XDP-prctl$PR_SET_MM_MAP-bpf$BPF_GET_MAP_INFO-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbmon(&(0x7f0000000000), 0x6, 0x200) bpf$PROG_LOAD_XDP(0x5, &(0x7f0000000200)={0x6, 0x3, 0x0, 0x0, 0x1, 0x5}, 0x94) prctl$PR_SET_MM_MAP(0x23, 0xe, &(0x7f0000000080)={&(0x7f0000ff0000/0x1000)=nil, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000003000/0x3000)=nil, &(0x7f0000ffd000/0x1000)=nil, &(0x7f0000ff8000/0x4000)=nil, &(0x7f0000000000/0x4000)=nil, &(0x7f0000000000/0x3000)=nil, &(0x7f0000ff7000/0x1000)=nil, &(0x7f0000ffc000/0x3000)=nil, &(0x7f0000ffd000/0x2000)=nil, &(0x7f0000ffa000/0x2000)=nil, 0x0}, 0x68) bpf$BPF_GET_MAP_INFO(0xf, &(0x7f0000000080)={0xffffffffffffffff, 0x58}, 0x10) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program crashed: INFO: task hung in em28xx_i2c_unregister testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbmon-bpf$PROG_LOAD_XDP-prctl$PR_SET_MM_MAP-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbmon(&(0x7f0000000000), 0x6, 0x200) bpf$PROG_LOAD_XDP(0x5, &(0x7f0000000200)={0x6, 0x3, 0x0, 0x0, 0x1, 0x5}, 0x94) prctl$PR_SET_MM_MAP(0x23, 0xe, &(0x7f0000000080)={&(0x7f0000ff0000/0x1000)=nil, &(0x7f0000ffd000/0x3000)=nil, &(0x7f0000003000/0x3000)=nil, &(0x7f0000ffd000/0x1000)=nil, &(0x7f0000ff8000/0x4000)=nil, &(0x7f0000000000/0x4000)=nil, &(0x7f0000000000/0x3000)=nil, &(0x7f0000ff7000/0x1000)=nil, &(0x7f0000ffc000/0x3000)=nil, &(0x7f0000ffd000/0x2000)=nil, &(0x7f0000ffa000/0x2000)=nil, 0x0}, 0x68) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program crashed: INFO: task hung in em28xx_i2c_unregister testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbmon-bpf$PROG_LOAD_XDP-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbmon(&(0x7f0000000000), 0x6, 0x200) bpf$PROG_LOAD_XDP(0x5, &(0x7f0000000200)={0x6, 0x3, 0x0, 0x0, 0x1, 0x5}, 0x94) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program crashed: INFO: task hung in em28xx_i2c_unregister testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbmon-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbmon(&(0x7f0000000000), 0x6, 0x200) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program crashed: INFO: task hung in em28xx_i2c_unregister testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program crashed: INFO: task hung in em28xx_i2c_unregister testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(0xffffffffffffffff) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, 0x0, 0x0) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB], 0x0) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbfs(0x0, 0x10, 0x80100) syz_usb_disconnect(r0) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) syz_open_dev$I2C(0x0, 0x2, 0x202c1) program did not crash extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C program crashed: no output from test machine a never seen crash title: no output from test machine, ignore simplifying guilty program options testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program crashed: INFO: task hung in em28xx_i2c_unregister extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program did not crash testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program did not crash testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program crashed: INFO: task hung in em28xx_i2c_unregister validation run: crashed=true testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program crashed: INFO: task hung in em28xx_i2c_unregister validation run: crashed=true testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_open_dev$usbfs-syz_usb_disconnect-syz_open_dev$I2C detailed listing: executing program 0: r0 = syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000083667d1040206402d14e0102030109021b000100000000090400000190f19c00090584"], 0x0) syz_open_dev$usbfs(&(0x7f0000000240), 0x10, 0x80100) syz_usb_disconnect(r0) syz_open_dev$I2C(&(0x7f0000000100), 0x2, 0x202c1) program crashed: INFO: task hung in em28xx_i2c_unregister validation run: crashed=true reproducing took 2h59m39.485405829s repro crashed as (corrupted=false): INFO: task kworker/0:1:10 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:1 state:D stack:22384 pid:10 tgid:10 ppid:2 task_flags:0x4288060 flags:0x00080000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5520 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7270 __schedule_loop kernel/sched/core.c:7347 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7362 schedule_timeout+0xc0/0x2c0 kernel/time/sleep_timeout.c:75 do_wait_for_common kernel/sched/completion.c:100 [inline] __wait_for_common kernel/sched/completion.c:121 [inline] wait_for_common kernel/sched/completion.c:132 [inline] wait_for_completion+0x2ca/0x5e0 kernel/sched/completion.c:153 i2c_del_adapter+0x281/0x430 drivers/i2c/i2c-core-base.c:1841 em28xx_i2c_unregister+0x4b/0x60 drivers/media/usb/em28xx/em28xx-i2c.c:1029 em28xx_release_resources+0x14c/0x240 drivers/media/usb/em28xx/em28xx-cards.c:3764 em28xx_usb_disconnect+0x19f/0x2f0 drivers/media/usb/em28xx/em28xx-cards.c:4455 usb_unbind_interface+0x295/0x9f0 drivers/usb/core/driver.c:461 device_remove drivers/base/dd.c:618 [inline] __device_release_driver drivers/base/dd.c:1349 [inline] device_release_driver_internal+0x4f5/0x880 drivers/base/dd.c:1372 bus_remove_device+0x444/0x560 drivers/base/bus.c:664 device_del+0x524/0x8f0 drivers/base/core.c:3965 usb_disable_device+0x3d4/0x8d0 drivers/usb/core/message.c:1478 usb_disconnect+0x346/0x9a0 drivers/usb/core/hub.c:2350 hub_port_connect drivers/usb/core/hub.c:5420 [inline] hub_port_connect_change drivers/usb/core/hub.c:5720 [inline] port_event drivers/usb/core/hub.c:5884 [inline] hub_event+0x1bbb/0x4d30 drivers/usb/core/hub.c:5966 process_one_work kernel/workqueue.c:3387 [inline] process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3470 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3551 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 INFO: task syz.5.77:6007 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.77 state:D stack:27600 pid:6007 tgid:6007 ppid:5756 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5520 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7270 __schedule_loop kernel/sched/core.c:7347 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7362 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7419 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7c1/0x1550 kernel/locking/mutex.c:821 device_lock include/linux/device.h:1104 [inline] usbdev_release+0x80/0x780 drivers/usb/core/devio.c:1099 __fput+0x418/0xa50 fs/file_table.c:512 task_work_run+0x1d9/0x270 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:70 [inline] exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:336 [inline] do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4384b9e159 RSP: 002b:00007f4384f4fba8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f4384f4fc90 RCX: 00007f4384b9e159 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000036e97 R08: 0000000000000001 R09: 0000000000000000 R10: 0000001b32420000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f4384e25fac R14: 00007f4384e25fa8 R15: 00007f4384e25fa0 INFO: task syz.2.78:6008 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.78 state:D stack:27896 pid:6008 tgid:6008 ppid:5765 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5520 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7270 __schedule_loop kernel/sched/core.c:7347 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7362 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7419 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7c1/0x1550 kernel/locking/mutex.c:821 device_lock include/linux/device.h:1104 [inline] usbdev_release+0x80/0x780 drivers/usb/core/devio.c:1099 __fput+0x418/0xa50 fs/file_table.c:512 task_work_run+0x1d9/0x270 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:70 [inline] exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:336 [inline] do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fca5699e159 RSP: 002b:00007fca56d4fba8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007fca56d4fc90 RCX: 00007fca5699e159 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000036e93 R08: 0000000000000001 R09: 0000000000000000 R10: 0000001b33d20000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fca56c25fac R14: 00007fca56c25fa8 R15: 00007fca56c25fa0 INFO: task syz.4.79:6009 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.79 state:D stack:27344 pid:6009 tgid:6009 ppid:5762 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5520 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7270 __schedule_loop kernel/sched/core.c:7347 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7362 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7419 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7c1/0x1550 kernel/locking/mutex.c:821 device_lock include/linux/device.h:1104 [inline] usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 chrdev_open+0x4d9/0x600 fs/char_dev.c:411 do_dentry_open+0x816/0x1380 fs/open.c:996 vfs_open+0x3b/0x340 fs/open.c:1101 do_open fs/namei.c:4837 [inline] path_openat+0x1443/0x1d60 fs/namei.c:5000 do_file_open+0x23e/0x4a0 fs/namei.c:5029 do_sys_openat2+0x115/0x200 fs/open.c:1417 do_sys_open fs/open.c:1423 [inline] __do_sys_openat fs/open.c:1439 [inline] __se_sys_openat fs/open.c:1434 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1434 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4cd095e98e RSP: 002b:00007f4cd0d4f5e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000055557e235500 RCX: 00007f4cd095e98e RDX: 0000000000080100 RSI: 00007f4cd0d4f6c0 RDI: ffffffffffffff9c RBP: 00007f4cd0d4f6c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd R13: 00007f4cd0c25fac R14: 00007f4cd0c25fa0 R15: 00007f4cd0c25fa0 INFO: task syz.3.80:6010 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.80 state:D stack:27584 pid:6010 tgid:6010 ppid:5768 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5520 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7270 __schedule_loop kernel/sched/core.c:7347 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7362 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7419 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7c1/0x1550 kernel/locking/mutex.c:821 device_lock include/linux/device.h:1104 [inline] usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 chrdev_open+0x4d9/0x600 fs/char_dev.c:411 do_dentry_open+0x816/0x1380 fs/open.c:996 vfs_open+0x3b/0x340 fs/open.c:1101 do_open fs/namei.c:4837 [inline] path_openat+0x1443/0x1d60 fs/namei.c:5000 do_file_open+0x23e/0x4a0 fs/namei.c:5029 do_sys_openat2+0x115/0x200 fs/open.c:1417 do_sys_open fs/open.c:1423 [inline] __do_sys_openat fs/open.c:1439 [inline] __se_sys_openat fs/open.c:1434 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1434 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa36455e98e RSP: 002b:00007fa36494f5e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000555558e40500 RCX: 00007fa36455e98e RDX: 0000000000080100 RSI: 00007fa36494f6c0 RDI: ffffffffffffff9c RBP: 00007fa36494f6c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd R13: 00007fa364825fac R14: 00007fa364825fa0 R15: 00007fa364825fa0 INFO: task syz.1.81:6011 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.81 state:D stack:27648 pid:6011 tgid:6011 ppid:5763 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5520 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7270 __schedule_loop kernel/sched/core.c:7347 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7362 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7419 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7c1/0x1550 kernel/locking/mutex.c:821 device_lock include/linux/device.h:1104 [inline] usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 chrdev_open+0x4d9/0x600 fs/char_dev.c:411 do_dentry_open+0x816/0x1380 fs/open.c:996 vfs_open+0x3b/0x340 fs/open.c:1101 do_open fs/namei.c:4837 [inline] path_openat+0x1443/0x1d60 fs/namei.c:5000 do_file_open+0x23e/0x4a0 fs/namei.c:5029 do_sys_openat2+0x115/0x200 fs/open.c:1417 do_sys_open fs/open.c:1423 [inline] __do_sys_openat fs/open.c:1439 [inline] __se_sys_openat fs/open.c:1434 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1434 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f84c0f5e98e RSP: 002b:00007f84c134f5e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000055555c561500 RCX: 00007f84c0f5e98e RDX: 0000000000080100 RSI: 00007f84c134f6c0 RDI: ffffffffffffff9c RBP: 00007f84c134f6c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd R13: 00007f84c1225fac R14: 00007f84c1225fa0 R15: 00007f84c1225fa0 Showing all locks held in the system: locks held by kworker/0:1/10: 6, on CPU#0: #0: ffff88802268dd40 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff88802268dd40 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff88802268dd40 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #0: ffff88802268dd40 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #1: ffffc900000f7c40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffc900000f7c40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffc900000f7c40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #1: ffffc900000f7c40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #2: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #2: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: hub_event+0x184/0x4d30 drivers/usb/core/hub.c:5912 #3: ffff88807f3cd1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #3: ffff88807f3cd1d8 (&dev->mutex){....}-{4:4}, at: usb_disconnect+0xfc/0x9a0 drivers/usb/core/hub.c:2341 #4: ffff888079d521a0 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #4: ffff888079d521a0 (&dev->mutex){....}-{4:4}, at: __device_driver_lock drivers/base/dd.c:1171 [inline] #4: ffff888079d521a0 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0xb9/0x880 drivers/base/dd.c:1369 #5: ffff88805875dcf0 (&dev->lock#3){+.+.}-{4:4}, at: em28xx_release_resources+0x75/0x240 drivers/media/usb/em28xx/em28xx-cards.c:3758 locks held by khungtaskd/33: 1, last CPU#0: #0: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6837 locks held by kworker/u8:4/59: 4, last CPU#1: #0: ffff888031dce140 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3422 [inline] #0: ffff888031dce140 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0xeab/0x1630 kernel/workqueue.c:3470 #1: ffffc9000200fc40 ((work_completion)(&(&forw_packet_aggr->delayed_work)->work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffc9000200fc40 ((work_completion)(&(&forw_packet_aggr->delayed_work)->work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffc9000200fc40 ((work_completion)(&(&forw_packet_aggr->delayed_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #1: ffffc9000200fc40 ((work_completion)(&(&forw_packet_aggr->delayed_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #2: ffff8880558d39c8 (&hard_iface->bat_iv.ogm_buff_mutex){+.+.}-{4:4}, at: batadv_iv_ogm_schedule+0xd4/0xfc0 net/batman-adv/bat_iv_ogm.c:1010 #3: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #3: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #3: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:870 [inline] #3: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:949 [inline] #3: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: batadv_iv_ogm_schedule+0x41f/0xfc0 net/batman-adv/bat_iv_ogm.c:1011 locks held by kworker/u8:6/1002: 2, last CPU#1: #0: ffff8880324cc140 ((wq_completion)bat_events){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff8880324cc140 ((wq_completion)bat_events){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff8880324cc140 ((wq_completion)bat_events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #0: ffff8880324cc140 ((wq_completion)bat_events){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #1: ffffc90004fb7c40 ((work_completion)(&(&bat_priv->tt.work)->work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffc90004fb7c40 ((work_completion)(&(&bat_priv->tt.work)->work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffc90004fb7c40 ((work_completion)(&(&bat_priv->tt.work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #1: ffffc90004fb7c40 ((work_completion)(&(&bat_priv->tt.work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 locks held by kworker/u8:7/1095: 6, last CPU#1: #0: ffff888031dce140 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff888031dce140 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff888031dce140 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #0: ffff888031dce140 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #1: ffffc90005337c40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffc90005337c40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffc90005337c40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #1: ffffc90005337c40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #2: ffffffff90250d80 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:134 [inline] #2: ffffffff90250d80 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_dad_work+0x116/0x15c0 net/ipv6/addrconf.c:4230 #3: ffff8880526cf530 (&idev->mc_lock){+.+.}-{4:4}, at: ipv6_mc_dad_complete+0x31/0x410 net/ipv6/mcast.c:2293 #4: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #4: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #4: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: mld_sendpack+0x206/0xe10 net/ipv6/mcast.c:1842 #5: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: raw_spin_rq_lock_nested+0x2d/0x160 kernel/sched/core.c:677 locks held by kworker/u8:9/1168: 3, last CPU#1: #0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #1: ffffc90005327c40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffc90005327c40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffc90005327c40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #1: ffffc90005327c40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #2: ffff888051b44258 (&devlink->lock_key#29){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x57/0xb40 drivers/net/netdevsim/dev.c:834 locks held by getty/5370: 2, on CPU#1: #0: ffff8880357e50a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900032332e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360 drivers/tty/n_tty.c:2211 locks held by kworker/0:4/5750: 7, last CPU#0: #0: ffff888031fafd40 ((wq_completion)mld){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff888031fafd40 ((wq_completion)mld){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff888031fafd40 ((wq_completion)mld){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #0: ffff888031fafd40 ((wq_completion)mld){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #1: ffffc900033dfc40 ((work_completion)(&(&idev->mc_dad_work)->work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffc900033dfc40 ((work_completion)(&(&idev->mc_dad_work)->work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffc900033dfc40 ((work_completion)(&(&idev->mc_dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #1: ffffc900033dfc40 ((work_completion)(&(&idev->mc_dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #2: ffff8880608b2530 (&idev->mc_lock){+.+.}-{4:4}, at: mld_dad_work+0x35/0x480 net/ipv6/mcast.c:2310 #3: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #3: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #3: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: mld_sendpack+0x206/0xe10 net/ipv6/mcast.c:1842 #4: ffff8880b863bb20 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2d/0x160 kernel/sched/core.c:677 #5: ffff8880b8624408 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x57/0x7d0 kernel/sched/psi.c:933 #6: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #6: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #6: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1216 [inline] #6: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0x8f/0x2550 arch/x86/kernel/unwind_orc.c:495 locks held by kworker/0:5/5751: 3, last CPU#0: #0: ffff88801b06b140 ((wq_completion)events){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff88801b06b140 ((wq_completion)events){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff88801b06b140 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #0: ffff88801b06b140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #1: ffffc900033bfc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffc900033bfc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffc900033bfc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #1: ffffc900033bfc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #2: ffff88803136b250 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x1fd/0x3b0 drivers/net/netdevsim/fib.c:1490 locks held by kworker/0:7/5870: 3, on CPU#0: #0: ffff88801b06b140 ((wq_completion)events){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff88801b06b140 ((wq_completion)events){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff88801b06b140 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #0: ffff88801b06b140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #1: ffffc9000349fc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffc9000349fc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffc9000349fc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #1: ffffc9000349fc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #2: ffff888029a97250 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x1fd/0x3b0 drivers/net/netdevsim/fib.c:1490 locks held by udevd/5910: 4, on CPU#1: #0: ffff88805251ecf8 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xa4/0xca0 fs/seq_file.c:183 #1: ffff88807a621080 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_seq_start+0x5d/0x420 fs/kernfs/file.c:165 #2: ffff888033b61f08 (kn->active#30){++++}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline] #2: ffff888033b61f08 (kn->active#30){++++}-{0:0}, at: kernfs_seq_start+0xb2/0x420 fs/kernfs/file.c:166 #3: ffff88807f3cd1d8 (&dev->mutex){....}-{4:4}, at: device_lock_interruptible include/linux/device.h:1109 [inline] #3: ffff88807f3cd1d8 (&dev->mutex){....}-{4:4}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142 locks held by syz.5.77/6007: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_release+0x80/0x780 drivers/usb/core/devio.c:1099 locks held by syz.2.78/6008: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_release+0x80/0x780 drivers/usb/core/devio.c:1099 locks held by syz.4.79/6009: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.3.80/6010: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.1.81/6011: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.6.82/6098: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.7.83/6100: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.8.84/6101: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.0.86/6102: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.9.85/6104: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.2.89/6185: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.3.90/6196: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.1.88/6199: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.4.91/6200: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.6.97/6259: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.7.99/6272: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.8.100/6274: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.9.101/6275: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.0.108/6335: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.2.109/6351: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.3.111/6352: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.1.112/6353: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.4.118/6380: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.6.120/6424: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.8.122/6431: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.7.121/6432: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.9.128/6453: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.0.131/6504: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.2.132/6506: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.3.133/6507: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.1.138/6527: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.4.142/6568: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.6.143/6581: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.7.144/6583: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by kworker/u8:11/6585: 3, last CPU#1: #0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #1: ffffc9000649fc40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffc9000649fc40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffc9000649fc40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #1: ffffc9000649fc40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #2: ffff888033500258 (&devlink->lock_key#36){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x57/0xb40 drivers/net/netdevsim/dev.c:834 ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 33 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:123 nmi_trigger_cpumask_backtrace+0x17d/0x390 lib/nmi_backtrace.c:66 trigger_all_cpu_backtrace include/linux/nmi.h:164 [inline] __sys_info lib/sys_info.c:157 [inline] sys_info+0x135/0x170 lib/sys_info.c:165 check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline] watchdog+0xfd7/0x1030 kernel/hung_task.c:561 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 16 Comm: pr/ttyS0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:io_serial_in+0x77/0xc0 drivers/tty/serial/8250/8250_port.c:409 Code: e8 5e e2 55 fc 44 89 f9 d3 e3 49 83 c6 40 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 af ab c5 fc 41 03 1e 89 da ec <0f> b6 c0 5b 41 5c 41 5e 41 5f e9 1a e4 74 06 cc 44 89 f9 80 e1 07 RSP: 0018:ffffc900001578b8 EFLAGS: 00000002 RAX: 1ffffffff35a6200 RBX: 00000000000003fd RCX: 0000000000000000 RDX: 00000000000003fd RSI: 0000000000000000 RDI: 0000000000000020 RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: ffffffff8571d400 R12: dffffc0000000000 R13: 0000000000000000 R14: ffffffff9ad310c0 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888124cda000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557612829660 CR3: 0000000072a54000 CR4: 00000000003526f0 Call Trace: serial_in drivers/tty/serial/8250/8250.h:128 [inline] serial_lsr_in drivers/tty/serial/8250/8250.h:150 [inline] wait_for_lsr+0x184/0x2f0 drivers/tty/serial/8250/8250_port.c:2013 serial8250_fifo_wait_for_lsr_thre drivers/tty/serial/8250/8250_port.c:3270 [inline] __serial8250_console_fifo_write+0xcd/0x3e0 drivers/tty/serial/8250/8250_port.c:3345 serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3378 [inline] __serial8250_console_write drivers/tty/serial/8250/8250_port.c:3429 [inline] serial8250_console_write+0xaa1/0x1200 drivers/tty/serial/8250/8250_port.c:3493 nbcon_emit_next_record+0xef5/0x1a90 kernel/printk/nbcon.c:-1 nbcon_emit_one kernel/printk/nbcon.c:1157 [inline] nbcon_kthread_func+0x679/0x880 kernel/printk/nbcon.c:1271 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 final repro crashed as (corrupted=false): INFO: task kworker/0:1:10 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:1 state:D stack:22384 pid:10 tgid:10 ppid:2 task_flags:0x4288060 flags:0x00080000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5520 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7270 __schedule_loop kernel/sched/core.c:7347 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7362 schedule_timeout+0xc0/0x2c0 kernel/time/sleep_timeout.c:75 do_wait_for_common kernel/sched/completion.c:100 [inline] __wait_for_common kernel/sched/completion.c:121 [inline] wait_for_common kernel/sched/completion.c:132 [inline] wait_for_completion+0x2ca/0x5e0 kernel/sched/completion.c:153 i2c_del_adapter+0x281/0x430 drivers/i2c/i2c-core-base.c:1841 em28xx_i2c_unregister+0x4b/0x60 drivers/media/usb/em28xx/em28xx-i2c.c:1029 em28xx_release_resources+0x14c/0x240 drivers/media/usb/em28xx/em28xx-cards.c:3764 em28xx_usb_disconnect+0x19f/0x2f0 drivers/media/usb/em28xx/em28xx-cards.c:4455 usb_unbind_interface+0x295/0x9f0 drivers/usb/core/driver.c:461 device_remove drivers/base/dd.c:618 [inline] __device_release_driver drivers/base/dd.c:1349 [inline] device_release_driver_internal+0x4f5/0x880 drivers/base/dd.c:1372 bus_remove_device+0x444/0x560 drivers/base/bus.c:664 device_del+0x524/0x8f0 drivers/base/core.c:3965 usb_disable_device+0x3d4/0x8d0 drivers/usb/core/message.c:1478 usb_disconnect+0x346/0x9a0 drivers/usb/core/hub.c:2350 hub_port_connect drivers/usb/core/hub.c:5420 [inline] hub_port_connect_change drivers/usb/core/hub.c:5720 [inline] port_event drivers/usb/core/hub.c:5884 [inline] hub_event+0x1bbb/0x4d30 drivers/usb/core/hub.c:5966 process_one_work kernel/workqueue.c:3387 [inline] process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3470 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3551 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 INFO: task syz.5.77:6007 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.77 state:D stack:27600 pid:6007 tgid:6007 ppid:5756 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5520 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7270 __schedule_loop kernel/sched/core.c:7347 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7362 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7419 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7c1/0x1550 kernel/locking/mutex.c:821 device_lock include/linux/device.h:1104 [inline] usbdev_release+0x80/0x780 drivers/usb/core/devio.c:1099 __fput+0x418/0xa50 fs/file_table.c:512 task_work_run+0x1d9/0x270 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:70 [inline] exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:336 [inline] do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4384b9e159 RSP: 002b:00007f4384f4fba8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f4384f4fc90 RCX: 00007f4384b9e159 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000036e97 R08: 0000000000000001 R09: 0000000000000000 R10: 0000001b32420000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f4384e25fac R14: 00007f4384e25fa8 R15: 00007f4384e25fa0 INFO: task syz.2.78:6008 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.78 state:D stack:27896 pid:6008 tgid:6008 ppid:5765 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5520 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7270 __schedule_loop kernel/sched/core.c:7347 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7362 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7419 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7c1/0x1550 kernel/locking/mutex.c:821 device_lock include/linux/device.h:1104 [inline] usbdev_release+0x80/0x780 drivers/usb/core/devio.c:1099 __fput+0x418/0xa50 fs/file_table.c:512 task_work_run+0x1d9/0x270 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:70 [inline] exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:336 [inline] do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fca5699e159 RSP: 002b:00007fca56d4fba8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007fca56d4fc90 RCX: 00007fca5699e159 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000036e93 R08: 0000000000000001 R09: 0000000000000000 R10: 0000001b33d20000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fca56c25fac R14: 00007fca56c25fa8 R15: 00007fca56c25fa0 INFO: task syz.4.79:6009 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.4.79 state:D stack:27344 pid:6009 tgid:6009 ppid:5762 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5520 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7270 __schedule_loop kernel/sched/core.c:7347 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7362 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7419 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7c1/0x1550 kernel/locking/mutex.c:821 device_lock include/linux/device.h:1104 [inline] usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 chrdev_open+0x4d9/0x600 fs/char_dev.c:411 do_dentry_open+0x816/0x1380 fs/open.c:996 vfs_open+0x3b/0x340 fs/open.c:1101 do_open fs/namei.c:4837 [inline] path_openat+0x1443/0x1d60 fs/namei.c:5000 do_file_open+0x23e/0x4a0 fs/namei.c:5029 do_sys_openat2+0x115/0x200 fs/open.c:1417 do_sys_open fs/open.c:1423 [inline] __do_sys_openat fs/open.c:1439 [inline] __se_sys_openat fs/open.c:1434 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1434 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4cd095e98e RSP: 002b:00007f4cd0d4f5e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000055557e235500 RCX: 00007f4cd095e98e RDX: 0000000000080100 RSI: 00007f4cd0d4f6c0 RDI: ffffffffffffff9c RBP: 00007f4cd0d4f6c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd R13: 00007f4cd0c25fac R14: 00007f4cd0c25fa0 R15: 00007f4cd0c25fa0 INFO: task syz.3.80:6010 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.80 state:D stack:27584 pid:6010 tgid:6010 ppid:5768 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5520 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7270 __schedule_loop kernel/sched/core.c:7347 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7362 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7419 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7c1/0x1550 kernel/locking/mutex.c:821 device_lock include/linux/device.h:1104 [inline] usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 chrdev_open+0x4d9/0x600 fs/char_dev.c:411 do_dentry_open+0x816/0x1380 fs/open.c:996 vfs_open+0x3b/0x340 fs/open.c:1101 do_open fs/namei.c:4837 [inline] path_openat+0x1443/0x1d60 fs/namei.c:5000 do_file_open+0x23e/0x4a0 fs/namei.c:5029 do_sys_openat2+0x115/0x200 fs/open.c:1417 do_sys_open fs/open.c:1423 [inline] __do_sys_openat fs/open.c:1439 [inline] __se_sys_openat fs/open.c:1434 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1434 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa36455e98e RSP: 002b:00007fa36494f5e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000555558e40500 RCX: 00007fa36455e98e RDX: 0000000000080100 RSI: 00007fa36494f6c0 RDI: ffffffffffffff9c RBP: 00007fa36494f6c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd R13: 00007fa364825fac R14: 00007fa364825fa0 R15: 00007fa364825fa0 INFO: task syz.1.81:6011 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.81 state:D stack:27648 pid:6011 tgid:6011 ppid:5763 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5520 [inline] __schedule+0x17db/0x58f0 kernel/sched/core.c:7270 __schedule_loop kernel/sched/core.c:7347 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7362 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7419 __mutex_lock_common kernel/locking/mutex.c:726 [inline] __mutex_lock+0x7c1/0x1550 kernel/locking/mutex.c:821 device_lock include/linux/device.h:1104 [inline] usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 chrdev_open+0x4d9/0x600 fs/char_dev.c:411 do_dentry_open+0x816/0x1380 fs/open.c:996 vfs_open+0x3b/0x340 fs/open.c:1101 do_open fs/namei.c:4837 [inline] path_openat+0x1443/0x1d60 fs/namei.c:5000 do_file_open+0x23e/0x4a0 fs/namei.c:5029 do_sys_openat2+0x115/0x200 fs/open.c:1417 do_sys_open fs/open.c:1423 [inline] __do_sys_openat fs/open.c:1439 [inline] __se_sys_openat fs/open.c:1434 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1434 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f84c0f5e98e RSP: 002b:00007f84c134f5e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000055555c561500 RCX: 00007f84c0f5e98e RDX: 0000000000080100 RSI: 00007f84c134f6c0 RDI: ffffffffffffff9c RBP: 00007f84c134f6c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd R13: 00007f84c1225fac R14: 00007f84c1225fa0 R15: 00007f84c1225fa0 Showing all locks held in the system: locks held by kworker/0:1/10: 6, on CPU#0: #0: ffff88802268dd40 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff88802268dd40 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff88802268dd40 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #0: ffff88802268dd40 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #1: ffffc900000f7c40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffc900000f7c40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffc900000f7c40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #1: ffffc900000f7c40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #2: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #2: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: hub_event+0x184/0x4d30 drivers/usb/core/hub.c:5912 #3: ffff88807f3cd1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #3: ffff88807f3cd1d8 (&dev->mutex){....}-{4:4}, at: usb_disconnect+0xfc/0x9a0 drivers/usb/core/hub.c:2341 #4: ffff888079d521a0 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #4: ffff888079d521a0 (&dev->mutex){....}-{4:4}, at: __device_driver_lock drivers/base/dd.c:1171 [inline] #4: ffff888079d521a0 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0xb9/0x880 drivers/base/dd.c:1369 #5: ffff88805875dcf0 (&dev->lock#3){+.+.}-{4:4}, at: em28xx_release_resources+0x75/0x240 drivers/media/usb/em28xx/em28xx-cards.c:3758 locks held by khungtaskd/33: 1, last CPU#0: #0: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6837 locks held by kworker/u8:4/59: 4, last CPU#1: #0: ffff888031dce140 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3422 [inline] #0: ffff888031dce140 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0xeab/0x1630 kernel/workqueue.c:3470 #1: ffffc9000200fc40 ((work_completion)(&(&forw_packet_aggr->delayed_work)->work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffc9000200fc40 ((work_completion)(&(&forw_packet_aggr->delayed_work)->work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffc9000200fc40 ((work_completion)(&(&forw_packet_aggr->delayed_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #1: ffffc9000200fc40 ((work_completion)(&(&forw_packet_aggr->delayed_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #2: ffff8880558d39c8 (&hard_iface->bat_iv.ogm_buff_mutex){+.+.}-{4:4}, at: batadv_iv_ogm_schedule+0xd4/0xfc0 net/batman-adv/bat_iv_ogm.c:1010 #3: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #3: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #3: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:870 [inline] #3: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:949 [inline] #3: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: batadv_iv_ogm_schedule+0x41f/0xfc0 net/batman-adv/bat_iv_ogm.c:1011 locks held by kworker/u8:6/1002: 2, last CPU#1: #0: ffff8880324cc140 ((wq_completion)bat_events){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff8880324cc140 ((wq_completion)bat_events){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff8880324cc140 ((wq_completion)bat_events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #0: ffff8880324cc140 ((wq_completion)bat_events){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #1: ffffc90004fb7c40 ((work_completion)(&(&bat_priv->tt.work)->work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffc90004fb7c40 ((work_completion)(&(&bat_priv->tt.work)->work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffc90004fb7c40 ((work_completion)(&(&bat_priv->tt.work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #1: ffffc90004fb7c40 ((work_completion)(&(&bat_priv->tt.work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 locks held by kworker/u8:7/1095: 6, last CPU#1: #0: ffff888031dce140 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff888031dce140 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff888031dce140 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #0: ffff888031dce140 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #1: ffffc90005337c40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffc90005337c40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffc90005337c40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #1: ffffc90005337c40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #2: ffffffff90250d80 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:134 [inline] #2: ffffffff90250d80 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_dad_work+0x116/0x15c0 net/ipv6/addrconf.c:4230 #3: ffff8880526cf530 (&idev->mc_lock){+.+.}-{4:4}, at: ipv6_mc_dad_complete+0x31/0x410 net/ipv6/mcast.c:2293 #4: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #4: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #4: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: mld_sendpack+0x206/0xe10 net/ipv6/mcast.c:1842 #5: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: raw_spin_rq_lock_nested+0x2d/0x160 kernel/sched/core.c:677 locks held by kworker/u8:9/1168: 3, last CPU#1: #0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #1: ffffc90005327c40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffc90005327c40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffc90005327c40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #1: ffffc90005327c40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #2: ffff888051b44258 (&devlink->lock_key#29){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x57/0xb40 drivers/net/netdevsim/dev.c:834 locks held by getty/5370: 2, on CPU#1: #0: ffff8880357e50a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900032332e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360 drivers/tty/n_tty.c:2211 locks held by kworker/0:4/5750: 7, last CPU#0: #0: ffff888031fafd40 ((wq_completion)mld){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff888031fafd40 ((wq_completion)mld){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff888031fafd40 ((wq_completion)mld){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #0: ffff888031fafd40 ((wq_completion)mld){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #1: ffffc900033dfc40 ((work_completion)(&(&idev->mc_dad_work)->work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffc900033dfc40 ((work_completion)(&(&idev->mc_dad_work)->work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffc900033dfc40 ((work_completion)(&(&idev->mc_dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #1: ffffc900033dfc40 ((work_completion)(&(&idev->mc_dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #2: ffff8880608b2530 (&idev->mc_lock){+.+.}-{4:4}, at: mld_dad_work+0x35/0x480 net/ipv6/mcast.c:2310 #3: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #3: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #3: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: mld_sendpack+0x206/0xe10 net/ipv6/mcast.c:1842 #4: ffff8880b863bb20 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2d/0x160 kernel/sched/core.c:677 #5: ffff8880b8624408 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x57/0x7d0 kernel/sched/psi.c:933 #6: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #6: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #6: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1216 [inline] #6: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0x8f/0x2550 arch/x86/kernel/unwind_orc.c:495 locks held by kworker/0:5/5751: 3, last CPU#0: #0: ffff88801b06b140 ((wq_completion)events){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff88801b06b140 ((wq_completion)events){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff88801b06b140 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #0: ffff88801b06b140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #1: ffffc900033bfc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffc900033bfc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffc900033bfc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #1: ffffc900033bfc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #2: ffff88803136b250 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x1fd/0x3b0 drivers/net/netdevsim/fib.c:1490 locks held by kworker/0:7/5870: 3, on CPU#0: #0: ffff88801b06b140 ((wq_completion)events){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff88801b06b140 ((wq_completion)events){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff88801b06b140 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #0: ffff88801b06b140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #1: ffffc9000349fc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffc9000349fc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffc9000349fc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #1: ffffc9000349fc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #2: ffff888029a97250 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x1fd/0x3b0 drivers/net/netdevsim/fib.c:1490 locks held by udevd/5910: 4, on CPU#1: #0: ffff88805251ecf8 (&p->lock){+.+.}-{4:4}, at: seq_read_iter+0xa4/0xca0 fs/seq_file.c:183 #1: ffff88807a621080 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_seq_start+0x5d/0x420 fs/kernfs/file.c:165 #2: ffff888033b61f08 (kn->active#30){++++}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline] #2: ffff888033b61f08 (kn->active#30){++++}-{0:0}, at: kernfs_seq_start+0xb2/0x420 fs/kernfs/file.c:166 #3: ffff88807f3cd1d8 (&dev->mutex){....}-{4:4}, at: device_lock_interruptible include/linux/device.h:1109 [inline] #3: ffff88807f3cd1d8 (&dev->mutex){....}-{4:4}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142 locks held by syz.5.77/6007: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_release+0x80/0x780 drivers/usb/core/devio.c:1099 locks held by syz.2.78/6008: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_release+0x80/0x780 drivers/usb/core/devio.c:1099 locks held by syz.4.79/6009: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.3.80/6010: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.1.81/6011: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.6.82/6098: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.7.83/6100: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.8.84/6101: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.0.86/6102: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.9.85/6104: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.2.89/6185: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.3.90/6196: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.1.88/6199: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.4.91/6200: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.6.97/6259: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.7.99/6272: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.8.100/6274: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.9.101/6275: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.0.108/6335: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.2.109/6351: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.3.111/6352: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.1.112/6353: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.4.118/6380: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.6.120/6424: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.8.122/6431: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.7.121/6432: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.9.128/6453: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.0.131/6504: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.2.132/6506: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.3.133/6507: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.1.138/6527: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.4.142/6568: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.6.143/6581: 1, on CPU#1: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by syz.7.144/6583: 1, on CPU#0: #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #0: ffff888025eee1d8 (&dev->mutex){....}-{4:4}, at: usbdev_open+0x151/0x770 drivers/usb/core/devio.c:1054 locks held by kworker/u8:11/6585: 3, last CPU#1: #0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #1: ffffc9000649fc40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffc9000649fc40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffc9000649fc40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3352 [inline] #1: ffffc9000649fc40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3470 #2: ffff888033500258 (&devlink->lock_key#36){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x57/0xb40 drivers/net/netdevsim/dev.c:834 ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 33 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:123 nmi_trigger_cpumask_backtrace+0x17d/0x390 lib/nmi_backtrace.c:66 trigger_all_cpu_backtrace include/linux/nmi.h:164 [inline] __sys_info lib/sys_info.c:157 [inline] sys_info+0x135/0x170 lib/sys_info.c:165 check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline] watchdog+0xfd7/0x1030 kernel/hung_task.c:561 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 16 Comm: pr/ttyS0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:io_serial_in+0x77/0xc0 drivers/tty/serial/8250/8250_port.c:409 Code: e8 5e e2 55 fc 44 89 f9 d3 e3 49 83 c6 40 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 af ab c5 fc 41 03 1e 89 da ec <0f> b6 c0 5b 41 5c 41 5e 41 5f e9 1a e4 74 06 cc 44 89 f9 80 e1 07 RSP: 0018:ffffc900001578b8 EFLAGS: 00000002 RAX: 1ffffffff35a6200 RBX: 00000000000003fd RCX: 0000000000000000 RDX: 00000000000003fd RSI: 0000000000000000 RDI: 0000000000000020 RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: ffffffff8571d400 R12: dffffc0000000000 R13: 0000000000000000 R14: ffffffff9ad310c0 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888124cda000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557612829660 CR3: 0000000072a54000 CR4: 00000000003526f0 Call Trace: serial_in drivers/tty/serial/8250/8250.h:128 [inline] serial_lsr_in drivers/tty/serial/8250/8250.h:150 [inline] wait_for_lsr+0x184/0x2f0 drivers/tty/serial/8250/8250_port.c:2013 serial8250_fifo_wait_for_lsr_thre drivers/tty/serial/8250/8250_port.c:3270 [inline] __serial8250_console_fifo_write+0xcd/0x3e0 drivers/tty/serial/8250/8250_port.c:3345 serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3378 [inline] __serial8250_console_write drivers/tty/serial/8250/8250_port.c:3429 [inline] serial8250_console_write+0xaa1/0x1200 drivers/tty/serial/8250/8250_port.c:3493 nbcon_emit_next_record+0xef5/0x1a90 kernel/printk/nbcon.c:-1 nbcon_emit_one kernel/printk/nbcon.c:1157 [inline] nbcon_kthread_func+0x679/0x880 kernel/printk/nbcon.c:1271 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245