Extracting prog: 3m55.031727297s Minimizing prog: 2h1m53.252976821s Simplifying prog options: 0s Extracting C: 2m26.470360009s Simplifying C: 51m11.924402692s extracting reproducer from 70 programs first checking the prog from the crash report single: executing 1 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$IORING_OFF_SQ_RING-getpid-syz_pidfd_open-prlimit64-bpf$BPF_BTF_LOAD-sendmmsg$inet-write$binfmt_register-sendmsg$nl_route-socket$packet-setsockopt$packet_int-ioctl$sock_SIOCGIFINDEX-sendto$packet-sched_setscheduler-getpid-sched_setscheduler-mmap-openat$tun-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setscheduler-bpf$PROG_LOAD-setns-timer_create-timer_settime-syz_clone detailed listing: executing program 0: mmap$IORING_OFF_SQ_RING(0x0, 0xbffffc, 0x2000007, 0x401d031, 0xffffffffffffffff, 0x0) r0 = getpid() r1 = syz_pidfd_open(r0, 0x0) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x88}, 0x0) bpf$BPF_BTF_LOAD(0x12, 0x0, 0x0) sendmmsg$inet(0xffffffffffffffff, &(0x7f00000001c0)=[{{0x0, 0x0, &(0x7f00000002c0)=[{&(0x7f0000000640)="985e44efeabe001cabcf3d8673c3a254a9a2d3197970cb347b70a243bf77139a94bc3ae91684aaf7b7dff691deb8f8aef2d915fb3a0794a9a9b431a819bca6122c350637808dde804a048fd8696e524b2934126c443ce93d82e931eb9918e6c082", 0x61}], 0x1}}], 0x1, 0x2090) write$binfmt_register(0xffffffffffffffff, &(0x7f0000000300)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x8000011000000009, 0x3a, 'B\xd4GGI\x82\\4\xbb\xbb\xbb\xb3\xd4)\xed\x8f\xaa\xf4\xd2{\xc5\t\xa9\xed\xf8e\xaa\xb9\xf5\r\xe3T\x0e\x8a\xd6\x9a_?G\x05\x00\x00\x00\x00\x00\x00\x00\x1e\x9a\xce\xac&x3\x15\x14y\xbf\xc6)\xa8\b/\x01\x00\x00\f\x8e1\xc4\xa1\xb2]I\xa5\x13}9\x1b0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r4, &(0x7f000057eff8)=@abs, 0x6e) sendmmsg$unix(r5, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r4, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) bpf$PROG_LOAD(0x5, &(0x7f000000e000)={0x10, 0x4, &(0x7f00000004c0)=ANY=[@ANYBLOB="b4020000000000007911000000000000850000006c0000009500000000000000359bb9f43d86b136000000008762000000f3"], &(0x7f00000000c0)='syzkaller\x00', 0x4, 0xb7, &(0x7f0000000300)=""/183, 0x0, 0x0, '\x00', 0x0, @sk_msg, 0xffffffffffffffff, 0x8, &(0x7f0000000000), 0x8, 0x10, &(0x7f00000002c0)={0x4, 0xfffffffe, 0x10, 0x200}, 0x10}, 0x94) setns(r1, 0x24020000) timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @thr={0x0, 0x0}}, 0x0) timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0) syz_clone(0xb21e0000, 0x0, 0x0, 0x0, 0x0, 0x0) program crashed: INFO: rcu detected stall in corrupted single: successfully extracted reproducer found reproducer with 27 syscalls minimizing guilty program testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$IORING_OFF_SQ_RING-getpid-syz_pidfd_open-prlimit64-bpf$BPF_BTF_LOAD-sendmmsg$inet-write$binfmt_register-sendmsg$nl_route-socket$packet-setsockopt$packet_int-ioctl$sock_SIOCGIFINDEX-sendto$packet-sched_setscheduler-getpid-sched_setscheduler-mmap-openat$tun-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setscheduler-bpf$PROG_LOAD-setns-timer_create-timer_settime detailed listing: executing program 0: mmap$IORING_OFF_SQ_RING(0x0, 0xbffffc, 0x2000007, 0x401d031, 0xffffffffffffffff, 0x0) r0 = getpid() r1 = syz_pidfd_open(r0, 0x0) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x88}, 0x0) bpf$BPF_BTF_LOAD(0x12, 0x0, 0x0) sendmmsg$inet(0xffffffffffffffff, &(0x7f00000001c0)=[{{0x0, 0x0, &(0x7f00000002c0)=[{&(0x7f0000000640)="985e44efeabe001cabcf3d8673c3a254a9a2d3197970cb347b70a243bf77139a94bc3ae91684aaf7b7dff691deb8f8aef2d915fb3a0794a9a9b431a819bca6122c350637808dde804a048fd8696e524b2934126c443ce93d82e931eb9918e6c082", 0x61}], 0x1}}], 0x1, 0x2090) write$binfmt_register(0xffffffffffffffff, &(0x7f0000000300)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x8000011000000009, 0x3a, 'B\xd4GGI\x82\\4\xbb\xbb\xbb\xb3\xd4)\xed\x8f\xaa\xf4\xd2{\xc5\t\xa9\xed\xf8e\xaa\xb9\xf5\r\xe3T\x0e\x8a\xd6\x9a_?G\x05\x00\x00\x00\x00\x00\x00\x00\x1e\x9a\xce\xac&x3\x15\x14y\xbf\xc6)\xa8\b/\x01\x00\x00\f\x8e1\xc4\xa1\xb2]I\xa5\x13}9\x1b0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r4, &(0x7f000057eff8)=@abs, 0x6e) sendmmsg$unix(r5, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r4, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) bpf$PROG_LOAD(0x5, &(0x7f000000e000)={0x10, 0x4, &(0x7f00000004c0)=ANY=[@ANYBLOB="b4020000000000007911000000000000850000006c0000009500000000000000359bb9f43d86b136000000008762000000f3"], &(0x7f00000000c0)='syzkaller\x00', 0x4, 0xb7, &(0x7f0000000300)=""/183, 0x0, 0x0, '\x00', 0x0, @sk_msg, 0xffffffffffffffff, 0x8, &(0x7f0000000000), 0x8, 0x10, &(0x7f00000002c0)={0x4, 0xfffffffe, 0x10, 0x200}, 0x10}, 0x94) setns(r1, 0x24020000) timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @thr={0x0, 0x0}}, 0x0) timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0) program crashed: INFO: rcu detected stall in corrupted testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$IORING_OFF_SQ_RING-getpid-syz_pidfd_open-prlimit64-bpf$BPF_BTF_LOAD-sendmmsg$inet-write$binfmt_register-sendmsg$nl_route-socket$packet-setsockopt$packet_int-ioctl$sock_SIOCGIFINDEX-sendto$packet-sched_setscheduler-getpid-sched_setscheduler-mmap-openat$tun-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setscheduler-bpf$PROG_LOAD-setns-timer_create detailed listing: executing program 0: mmap$IORING_OFF_SQ_RING(0x0, 0xbffffc, 0x2000007, 0x401d031, 0xffffffffffffffff, 0x0) r0 = getpid() r1 = syz_pidfd_open(r0, 0x0) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x88}, 0x0) bpf$BPF_BTF_LOAD(0x12, 0x0, 0x0) sendmmsg$inet(0xffffffffffffffff, &(0x7f00000001c0)=[{{0x0, 0x0, &(0x7f00000002c0)=[{&(0x7f0000000640)="985e44efeabe001cabcf3d8673c3a254a9a2d3197970cb347b70a243bf77139a94bc3ae91684aaf7b7dff691deb8f8aef2d915fb3a0794a9a9b431a819bca6122c350637808dde804a048fd8696e524b2934126c443ce93d82e931eb9918e6c082", 0x61}], 0x1}}], 0x1, 0x2090) write$binfmt_register(0xffffffffffffffff, &(0x7f0000000300)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x8000011000000009, 0x3a, 'B\xd4GGI\x82\\4\xbb\xbb\xbb\xb3\xd4)\xed\x8f\xaa\xf4\xd2{\xc5\t\xa9\xed\xf8e\xaa\xb9\xf5\r\xe3T\x0e\x8a\xd6\x9a_?G\x05\x00\x00\x00\x00\x00\x00\x00\x1e\x9a\xce\xac&x3\x15\x14y\xbf\xc6)\xa8\b/\x01\x00\x00\f\x8e1\xc4\xa1\xb2]I\xa5\x13}9\x1b0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r4, &(0x7f000057eff8)=@abs, 0x6e) sendmmsg$unix(r5, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r4, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) bpf$PROG_LOAD(0x5, &(0x7f000000e000)={0x10, 0x4, &(0x7f00000004c0)=ANY=[@ANYBLOB="b4020000000000007911000000000000850000006c0000009500000000000000359bb9f43d86b136000000008762000000f3"], &(0x7f00000000c0)='syzkaller\x00', 0x4, 0xb7, &(0x7f0000000300)=""/183, 0x0, 0x0, '\x00', 0x0, @sk_msg, 0xffffffffffffffff, 0x8, &(0x7f0000000000), 0x8, 0x10, &(0x7f00000002c0)={0x4, 0xfffffffe, 0x10, 0x200}, 0x10}, 0x94) setns(r1, 0x24020000) timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @thr={0x0, 0x0}}, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$IORING_OFF_SQ_RING-getpid-syz_pidfd_open-prlimit64-bpf$BPF_BTF_LOAD-sendmmsg$inet-write$binfmt_register-sendmsg$nl_route-socket$packet-setsockopt$packet_int-ioctl$sock_SIOCGIFINDEX-sendto$packet-sched_setscheduler-getpid-sched_setscheduler-mmap-openat$tun-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setscheduler-bpf$PROG_LOAD-setns-timer_settime detailed listing: executing program 0: mmap$IORING_OFF_SQ_RING(0x0, 0xbffffc, 0x2000007, 0x401d031, 0xffffffffffffffff, 0x0) r0 = getpid() r1 = syz_pidfd_open(r0, 0x0) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x88}, 0x0) bpf$BPF_BTF_LOAD(0x12, 0x0, 0x0) sendmmsg$inet(0xffffffffffffffff, &(0x7f00000001c0)=[{{0x0, 0x0, &(0x7f00000002c0)=[{&(0x7f0000000640)="985e44efeabe001cabcf3d8673c3a254a9a2d3197970cb347b70a243bf77139a94bc3ae91684aaf7b7dff691deb8f8aef2d915fb3a0794a9a9b431a819bca6122c350637808dde804a048fd8696e524b2934126c443ce93d82e931eb9918e6c082", 0x61}], 0x1}}], 0x1, 0x2090) write$binfmt_register(0xffffffffffffffff, &(0x7f0000000300)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x8000011000000009, 0x3a, 'B\xd4GGI\x82\\4\xbb\xbb\xbb\xb3\xd4)\xed\x8f\xaa\xf4\xd2{\xc5\t\xa9\xed\xf8e\xaa\xb9\xf5\r\xe3T\x0e\x8a\xd6\x9a_?G\x05\x00\x00\x00\x00\x00\x00\x00\x1e\x9a\xce\xac&x3\x15\x14y\xbf\xc6)\xa8\b/\x01\x00\x00\f\x8e1\xc4\xa1\xb2]I\xa5\x13}9\x1b0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r4, &(0x7f000057eff8)=@abs, 0x6e) sendmmsg$unix(r5, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r4, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) bpf$PROG_LOAD(0x5, &(0x7f000000e000)={0x10, 0x4, &(0x7f00000004c0)=ANY=[@ANYBLOB="b4020000000000007911000000000000850000006c0000009500000000000000359bb9f43d86b136000000008762000000f3"], &(0x7f00000000c0)='syzkaller\x00', 0x4, 0xb7, &(0x7f0000000300)=""/183, 0x0, 0x0, '\x00', 0x0, @sk_msg, 0xffffffffffffffff, 0x8, &(0x7f0000000000), 0x8, 0x10, &(0x7f00000002c0)={0x4, 0xfffffffe, 0x10, 0x200}, 0x10}, 0x94) setns(r1, 0x24020000) timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$IORING_OFF_SQ_RING-getpid-syz_pidfd_open-prlimit64-bpf$BPF_BTF_LOAD-sendmmsg$inet-write$binfmt_register-sendmsg$nl_route-socket$packet-setsockopt$packet_int-ioctl$sock_SIOCGIFINDEX-sendto$packet-sched_setscheduler-getpid-sched_setscheduler-mmap-openat$tun-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setscheduler-bpf$PROG_LOAD-timer_create-timer_settime detailed listing: executing program 0: mmap$IORING_OFF_SQ_RING(0x0, 0xbffffc, 0x2000007, 0x401d031, 0xffffffffffffffff, 0x0) r0 = getpid() syz_pidfd_open(r0, 0x0) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x88}, 0x0) bpf$BPF_BTF_LOAD(0x12, 0x0, 0x0) sendmmsg$inet(0xffffffffffffffff, &(0x7f00000001c0)=[{{0x0, 0x0, &(0x7f00000002c0)=[{&(0x7f0000000640)="985e44efeabe001cabcf3d8673c3a254a9a2d3197970cb347b70a243bf77139a94bc3ae91684aaf7b7dff691deb8f8aef2d915fb3a0794a9a9b431a819bca6122c350637808dde804a048fd8696e524b2934126c443ce93d82e931eb9918e6c082", 0x61}], 0x1}}], 0x1, 0x2090) write$binfmt_register(0xffffffffffffffff, &(0x7f0000000300)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x8000011000000009, 0x3a, 'B\xd4GGI\x82\\4\xbb\xbb\xbb\xb3\xd4)\xed\x8f\xaa\xf4\xd2{\xc5\t\xa9\xed\xf8e\xaa\xb9\xf5\r\xe3T\x0e\x8a\xd6\x9a_?G\x05\x00\x00\x00\x00\x00\x00\x00\x1e\x9a\xce\xac&x3\x15\x14y\xbf\xc6)\xa8\b/\x01\x00\x00\f\x8e1\xc4\xa1\xb2]I\xa5\x13}9\x1b0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r3, &(0x7f000057eff8)=@abs, 0x6e) sendmmsg$unix(r4, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) bpf$PROG_LOAD(0x5, &(0x7f000000e000)={0x10, 0x4, &(0x7f00000004c0)=ANY=[@ANYBLOB="b4020000000000007911000000000000850000006c0000009500000000000000359bb9f43d86b136000000008762000000f3"], &(0x7f00000000c0)='syzkaller\x00', 0x4, 0xb7, &(0x7f0000000300)=""/183, 0x0, 0x0, '\x00', 0x0, @sk_msg, 0xffffffffffffffff, 0x8, &(0x7f0000000000), 0x8, 0x10, &(0x7f00000002c0)={0x4, 0xfffffffe, 0x10, 0x200}, 0x10}, 0x94) timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @thr={0x0, 0x0}}, 0x0) timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0) program crashed: INFO: rcu detected stall in corrupted testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$IORING_OFF_SQ_RING-getpid-syz_pidfd_open-prlimit64-bpf$BPF_BTF_LOAD-sendmmsg$inet-write$binfmt_register-sendmsg$nl_route-socket$packet-setsockopt$packet_int-ioctl$sock_SIOCGIFINDEX-sendto$packet-sched_setscheduler-getpid-sched_setscheduler-mmap-openat$tun-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setscheduler-timer_create-timer_settime detailed listing: executing program 0: mmap$IORING_OFF_SQ_RING(0x0, 0xbffffc, 0x2000007, 0x401d031, 0xffffffffffffffff, 0x0) r0 = getpid() syz_pidfd_open(r0, 0x0) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x88}, 0x0) bpf$BPF_BTF_LOAD(0x12, 0x0, 0x0) sendmmsg$inet(0xffffffffffffffff, &(0x7f00000001c0)=[{{0x0, 0x0, &(0x7f00000002c0)=[{&(0x7f0000000640)="985e44efeabe001cabcf3d8673c3a254a9a2d3197970cb347b70a243bf77139a94bc3ae91684aaf7b7dff691deb8f8aef2d915fb3a0794a9a9b431a819bca6122c350637808dde804a048fd8696e524b2934126c443ce93d82e931eb9918e6c082", 0x61}], 0x1}}], 0x1, 0x2090) write$binfmt_register(0xffffffffffffffff, &(0x7f0000000300)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x8000011000000009, 0x3a, 'B\xd4GGI\x82\\4\xbb\xbb\xbb\xb3\xd4)\xed\x8f\xaa\xf4\xd2{\xc5\t\xa9\xed\xf8e\xaa\xb9\xf5\r\xe3T\x0e\x8a\xd6\x9a_?G\x05\x00\x00\x00\x00\x00\x00\x00\x1e\x9a\xce\xac&x3\x15\x14y\xbf\xc6)\xa8\b/\x01\x00\x00\f\x8e1\xc4\xa1\xb2]I\xa5\x13}9\x1b0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r3, &(0x7f000057eff8)=@abs, 0x6e) sendmmsg$unix(r4, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6) timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @thr={0x0, 0x0}}, 0x0) timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0) program crashed: INFO: rcu detected stall in corrupted testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$IORING_OFF_SQ_RING-getpid-syz_pidfd_open-prlimit64-bpf$BPF_BTF_LOAD-sendmmsg$inet-write$binfmt_register-sendmsg$nl_route-socket$packet-setsockopt$packet_int-ioctl$sock_SIOCGIFINDEX-sendto$packet-sched_setscheduler-getpid-sched_setscheduler-mmap-openat$tun-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-timer_create-timer_settime detailed listing: executing program 0: mmap$IORING_OFF_SQ_RING(0x0, 0xbffffc, 0x2000007, 0x401d031, 0xffffffffffffffff, 0x0) r0 = getpid() syz_pidfd_open(r0, 0x0) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x88}, 0x0) bpf$BPF_BTF_LOAD(0x12, 0x0, 0x0) sendmmsg$inet(0xffffffffffffffff, &(0x7f00000001c0)=[{{0x0, 0x0, &(0x7f00000002c0)=[{&(0x7f0000000640)="985e44efeabe001cabcf3d8673c3a254a9a2d3197970cb347b70a243bf77139a94bc3ae91684aaf7b7dff691deb8f8aef2d915fb3a0794a9a9b431a819bca6122c350637808dde804a048fd8696e524b2934126c443ce93d82e931eb9918e6c082", 0x61}], 0x1}}], 0x1, 0x2090) write$binfmt_register(0xffffffffffffffff, &(0x7f0000000300)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x8000011000000009, 0x3a, 'B\xd4GGI\x82\\4\xbb\xbb\xbb\xb3\xd4)\xed\x8f\xaa\xf4\xd2{\xc5\t\xa9\xed\xf8e\xaa\xb9\xf5\r\xe3T\x0e\x8a\xd6\x9a_?G\x05\x00\x00\x00\x00\x00\x00\x00\x1e\x9a\xce\xac&x3\x15\x14y\xbf\xc6)\xa8\b/\x01\x00\x00\f\x8e1\xc4\xa1\xb2]I\xa5\x13}9\x1b0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r3, &(0x7f000057eff8)=@abs, 0x6e) sendmmsg$unix(r4, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r3, &(0x7f00000000c0), 0x10106, 0x2, 0x0) timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @thr={0x0, 0x0}}, 0x0) timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0) program crashed: INFO: rcu detected stall in corrupted testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$IORING_OFF_SQ_RING-getpid-syz_pidfd_open-prlimit64-bpf$BPF_BTF_LOAD-sendmmsg$inet-write$binfmt_register-sendmsg$nl_route-socket$packet-setsockopt$packet_int-ioctl$sock_SIOCGIFINDEX-sendto$packet-sched_setscheduler-getpid-sched_setscheduler-mmap-openat$tun-socketpair$unix-connect$unix-sendmmsg$unix-timer_create-timer_settime detailed listing: executing program 0: mmap$IORING_OFF_SQ_RING(0x0, 0xbffffc, 0x2000007, 0x401d031, 0xffffffffffffffff, 0x0) r0 = getpid() syz_pidfd_open(r0, 0x0) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x88}, 0x0) bpf$BPF_BTF_LOAD(0x12, 0x0, 0x0) sendmmsg$inet(0xffffffffffffffff, &(0x7f00000001c0)=[{{0x0, 0x0, &(0x7f00000002c0)=[{&(0x7f0000000640)="985e44efeabe001cabcf3d8673c3a254a9a2d3197970cb347b70a243bf77139a94bc3ae91684aaf7b7dff691deb8f8aef2d915fb3a0794a9a9b431a819bca6122c350637808dde804a048fd8696e524b2934126c443ce93d82e931eb9918e6c082", 0x61}], 0x1}}], 0x1, 0x2090) write$binfmt_register(0xffffffffffffffff, &(0x7f0000000300)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x8000011000000009, 0x3a, 'B\xd4GGI\x82\\4\xbb\xbb\xbb\xb3\xd4)\xed\x8f\xaa\xf4\xd2{\xc5\t\xa9\xed\xf8e\xaa\xb9\xf5\r\xe3T\x0e\x8a\xd6\x9a_?G\x05\x00\x00\x00\x00\x00\x00\x00\x1e\x9a\xce\xac&x3\x15\x14y\xbf\xc6)\xa8\b/\x01\x00\x00\f\x8e1\xc4\xa1\xb2]I\xa5\x13}9\x1b0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r3, &(0x7f000057eff8)=@abs, 0x6e) sendmmsg$unix(r4, &(0x7f0000000000), 0x651, 0x0) timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @thr={0x0, 0x0}}, 0x0) timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0) program crashed: INFO: rcu detected stall in corrupted testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): mmap$IORING_OFF_SQ_RING-getpid-syz_pidfd_open-prlimit64-bpf$BPF_BTF_LOAD-sendmmsg$inet-write$binfmt_register-sendmsg$nl_route-socket$packet-setsockopt$packet_int-ioctl$sock_SIOCGIFINDEX-sendto$packet-sched_setscheduler-getpid-sched_setscheduler-mmap-openat$tun-socketpair$unix-connect$unix-timer_create-timer_settime detailed listing: executing program 0: mmap$IORING_OFF_SQ_RING(0x0, 0xbffffc, 0x2000007, 0x401d031, 0xffffffffffffffff, 0x0) r0 = getpid() syz_pidfd_open(r0, 0x0) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x88}, 0x0) bpf$BPF_BTF_LOAD(0x12, 0x0, 0x0) sendmmsg$inet(0xffffffffffffffff, &(0x7f00000001c0)=[{{0x0, 0x0, &(0x7f00000002c0)=[{&(0x7f0000000640)="985e44efeabe001cabcf3d8673c3a254a9a2d3197970cb347b70a243bf77139a94bc3ae91684aaf7b7dff691deb8f8aef2d915fb3a0794a9a9b431a819bca6122c350637808dde804a048fd8696e524b2934126c443ce93d82e931eb9918e6c082", 0x61}], 0x1}}], 0x1, 0x2090) write$binfmt_register(0xffffffffffffffff, &(0x7f0000000300)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x8000011000000009, 0x3a, 'B\xd4GGI\x82\\4\xbb\xbb\xbb\xb3\xd4)\xed\x8f\xaa\xf4\xd2{\xc5\t\xa9\xed\xf8e\xaa\xb9\xf5\r\xe3T\x0e\x8a\xd6\x9a_?G\x05\x00\x00\x00\x00\x00\x00\x00\x1e\x9a\xce\xac&x3\x15\x14y\xbf\xc6)\xa8\b/\x01\x00\x00\f\x8e1\xc4\xa1\xb2]I\xa5\x13}9\x1b0xffffffffffffffff}) connect$unix(r3, &(0x7f000057eff8)=@abs, 0x6e) timer_create(0x0, &(0x7f0000000680)={0x0, 0x21, 0x0, @thr={0x0, 0x0}}, 0x0) timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0) program crashed: INFO: rcu detected stall in corrupted testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$IORING_OFF_SQ_RING-getpid-syz_pidfd_open-prlimit64-bpf$BPF_BTF_LOAD-sendmmsg$inet-write$binfmt_register-sendmsg$nl_route-socket$packet-setsockopt$packet_int-ioctl$sock_SIOCGIFINDEX-sendto$packet-sched_setscheduler-getpid-sched_setscheduler-mmap-openat$tun-socketpair$unix-timer_create-timer_settime detailed listing: executing program 0: mmap$IORING_OFF_SQ_RING(0x0, 0xbffffc, 0x2000007, 0x401d031, 0xffffffffffffffff, 0x0) r0 = getpid() syz_pidfd_open(r0, 0x0) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x88}, 0x0) bpf$BPF_BTF_LOAD(0x12, 0x0, 0x0) sendmmsg$inet(0xffffffffffffffff, &(0x7f00000001c0)=[{{0x0, 0x0, &(0x7f00000002c0)=[{&(0x7f0000000640)="985e44efeabe001cabcf3d8673c3a254a9a2d3197970cb347b70a243bf77139a94bc3ae91684aaf7b7dff691deb8f8aef2d915fb3a0794a9a9b431a819bca6122c350637808dde804a048fd8696e524b2934126c443ce93d82e931eb9918e6c082", 0x61}], 0x1}}], 0x1, 0x2090) write$binfmt_register(0xffffffffffffffff, &(0x7f0000000300)={0x3a, 'syz2', 0x3a, 'M', 0x3a, 0x8000011000000009, 0x3a, 'B\xd4GGI\x82\\4\xbb\xbb\xbb\xb3\xd4)\xed\x8f\xaa\xf4\xd2{\xc5\t\xa9\xed\xf8e\xaa\xb9\xf5\r\xe3T\x0e\x8a\xd6\x9a_?G\x05\x00\x00\x00\x00\x00\x00\x00\x1e\x9a\xce\xac&x3\x15\x14y\xbf\xc6)\xa8\b/\x01\x00\x00\f\x8e1\xc4\xa1\xb2]I\xa5\x13}9\x1bqsmask 0x0 rcu: rcu_preempt kthread starved for 10502 jiffies! g15905 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_preempt state:R running task stack:27480 pid:17 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5382 [inline] __schedule+0x15ae/0x4660 kernel/sched/core.c:6701 schedule+0xbd/0x170 kernel/sched/core.c:6775 schedule_timeout+0x188/0x2d0 kernel/time/timer.c:2168 rcu_gp_fqs_loop+0x30d/0x1590 kernel/rcu/tree.c:1667 rcu_gp_kthread+0x9d/0x3b0 kernel/rcu/tree.c:1866 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 rcu: Stack dump where RCU GP kthread last ran: CPU: 1 PID: 6067 Comm: syz.0.25 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202 Code: 00 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 ca 7c d2 f6 48 89 df e8 72 50 d3 f6 e8 5d 57 f7 f6 fb bf 01 00 00 00 a2 5e c6 f6 65 8b 05 13 2d 6d 75 85 c0 74 02 5b c3 e8 c0 11 6a RSP: 0018:ffffc900034afc78 EFLAGS: 00000286 RAX: c9a591f128ff9900 RBX: ffff88802405a500 RCX: c9a591f128ff9900 RDX: dffffc0000000000 RSI: ffffffff8acacbe0 RDI: 0000000000000001 RBP: 0000000000000000 R08: ffffffff8e8c7caf R09: 1ffffffff1d18f95 R10: dffffc0000000000 R11: fffffbfff1d18f96 R12: 0000000000000021 R13: ffff88802405a998 R14: dffffc0000000000 R15: 000000001c000004 FS: 00005555815ff500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000006b000 CR3: 00000000239d1000 CR4: 00000000003506e0 Call Trace: spin_unlock_irq include/linux/spinlock.h:401 [inline] get_signal+0x1197/0x1390 kernel/signal.c:2906 arch_do_signal_or_restart+0xc2/0x7b0 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fcb07f9de99 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc3b8e0db8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00007fcb08225fa0 RCX: 00007fcb07f9de99 RDX: 000020000006b000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fcb08033eaf R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fcb08225fac R14: 00007fcb08225fa0 R15: 00007fcb08225fa0 report is corrupted, running repro again testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$IORING_OFF_SQ_RING-prlimit64-sched_setscheduler-timer_create-timer_settime program crashed: INFO: rcu detected stall in corrupted report is corrupted, running repro again testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap$IORING_OFF_SQ_RING-prlimit64-sched_setscheduler-timer_create-timer_settime program crashed: no output from test machine final repro crashed as (corrupted=false):