Extracting prog: 3m46.832909545s Minimizing prog: 2h50m46.165494464s Simplifying prog options: 0s Extracting C: 36.354508974s Simplifying C: 9m6.222089931s extracting reproducer from 1 programs testing a last program of every proc single: executing 1 programs separately with timeout 30s testing program (duration=30s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r5, @ANYBLOB="0c00018008000100", @ANYRES32=r5, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash single: failed to extract reproducer single: executing 1 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r5, @ANYBLOB="0c00018008000100", @ANYRES32=r5, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program crashed: possible deadlock in nbd_queue_rq single: successfully extracted reproducer found reproducer with 10 syscalls minimizing guilty program testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32, @ANYBLOB="0c00018008000100", @ANYRES32, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program crashed: lost connection to test machine suppressed program crash: lost connection to test machine testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r4, @ANYBLOB="0c00018008000100", @ANYRES32=r4, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r4, @ANYBLOB="0c00018008000100", @ANYRES32=r4, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)) syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r2, @ANYBLOB="0c00018008000100", @ANYRES32=r2, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r4, @ANYBLOB="0c00018008000100", @ANYRES32=r4, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r5, @ANYBLOB="0c00018008000100", @ANYRES32=r5, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r5, @ANYBLOB="0c00018008000100", @ANYRES32=r5, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r4, @ANYBLOB="0c00018008000100", @ANYRES32=r4, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r4, @ANYBLOB="0c00018008000100", @ANYRES32=r4, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, 0x0) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r2, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r4, @ANYBLOB="0c00018008000100", @ANYRES32=r4, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r5, @ANYBLOB="0c00018008000100", @ANYRES32=r5, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x4) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r3, @ANYBLOB="0c00018008000100", @ANYRES32=r3, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r3, @ANYBLOB="0c00018008000100", @ANYRES32=r3, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={0x0, 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r3, @ANYBLOB="0c00018008000100", @ANYRES32=r3, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)) r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r3, @ANYBLOB="0c00018008000100", @ANYRES32=r3, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB, @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r5, @ANYBLOB="0c00018008000100", @ANYRES32=r5, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r5, @ANYBLOB="0c00018008000100", @ANYRES32=r5, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r5, @ANYBLOB="0c00018008000100", @ANYRES32=r5, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, 0x0) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32, @ANYBLOB="0c00018008000100", @ANYRES32, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)) sendmsg$NBD_CMD_CONNECT(r3, 0x0, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, 0x0}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={0x0, 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r5, @ANYBLOB, @ANYRES32=r5, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r4, @ANYBLOB, @ANYRES32=r5, @ANYBLOB="0c00018008000100", @ANYRES32=r5, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB, @ANYRES16=r4, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r5, @ANYBLOB="0c00018008000100", @ANYRES32=r5, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program did not crash extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:true 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT program crashed: possible deadlock in nbd_queue_rq simplifying C reproducer testing compiled C 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT program crashed: possible deadlock in nbd_queue_rq testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT program crashed: possible deadlock in nbd_queue_rq testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT program crashed: possible deadlock in nbd_queue_rq testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT program crashed: possible deadlock in nbd_queue_rq testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT program crashed: possible deadlock in nbd_queue_rq testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT program crashed: possible deadlock in nbd_queue_rq testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT program crashed: possible deadlock in nbd_queue_rq testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r5, @ANYBLOB="0c00018008000100", @ANYRES32=r5, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program crashed: possible deadlock in nbd_queue_rq validation run: crashed=true testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r5, @ANYBLOB="0c00018008000100", @ANYRES32=r5, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program crashed: possible deadlock in nbd_queue_rq validation run: crashed=true testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair-syz_init_net_socket$nl_generic-close-socket$inet6_tcp-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-socketpair$nbd-sendmsg$NBD_CMD_CONNECT detailed listing: executing program 0: socketpair(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) close(0x3) socket$inet6_tcp(0xa, 0x1, 0x0) r2 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff) sendmsg$NBD_CMD_CONNECT(r1, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000200)=ANY=[@ANYBLOB='`\x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01002cbd700000000000010000000c0002000200000000000000400007800c00018008000100", @ANYRES32=r0, @ANYBLOB, @ANYRES32], 0x60}, 0x1, 0x0, 0x0, 0x55ebfcb85a78e904}, 0x4) r3 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), 0xffffffffffffffff) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) sendmsg$NBD_CMD_CONNECT(r3, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000140)=ANY=[@ANYBLOB='l\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="0100ffffffff00000000010000000c0005006c010000000000000c000200ff7f000000000000400007800c00018008000100", @ANYRES32=r5, @ANYBLOB="0c00018008000100", @ANYRES32=r5, @ANYBLOB, @ANYRES32], 0x6c}}, 0x20000000) program crashed: possible deadlock in nbd_queue_rq validation run: crashed=true reproducing took 3h9m8.555620824s repro crashed as (corrupted=false): ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ udevd/5653 is trying to acquire lock: ffff88807c4f1a68 (&nsock->tx_lock){+.+.}-{4:4}, at: nbd_handle_cmd drivers/block/nbd.c:1143 [inline] ffff88807c4f1a68 (&nsock->tx_lock){+.+.}-{4:4}, at: nbd_queue_rq+0x37b/0x1100 drivers/block/nbd.c:1207 but task is already holding lock: ffff888073020178 (&cmd->lock){+.+.}-{4:4}, at: nbd_queue_rq+0xc6/0x1100 drivers/block/nbd.c:1199 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #6 (&cmd->lock){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:646 [inline] __mutex_lock+0x1a3/0x1550 kernel/locking/mutex.c:820 nbd_queue_rq+0xc6/0x1100 drivers/block/nbd.c:1199 blk_mq_dispatch_rq_list+0xa70/0x1910 block/blk-mq.c:2148 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:168 [inline] blk_mq_do_dispatch_sched block/blk-mq-sched.c:182 [inline] __blk_mq_sched_dispatch_requests+0xdcc/0x1600 block/blk-mq-sched.c:307 blk_mq_sched_dispatch_requests+0xd7/0x190 block/blk-mq-sched.c:329 blk_mq_run_hw_queue+0x348/0x4f0 block/blk-mq.c:2386 blk_mq_dispatch_list+0xd16/0xe10 include/linux/spinlock.h:-1 blk_mq_flush_plug_list+0x48d/0x570 block/blk-mq.c:2997 __blk_flush_plug+0x3ed/0x4d0 block/blk-core.c:1230 blk_finish_plug block/blk-core.c:1257 [inline] __submit_bio+0x28d/0x580 block/blk-core.c:649 __submit_bio_noacct_mq block/blk-core.c:722 [inline] submit_bio_noacct_nocheck+0x2f4/0xa40 block/blk-core.c:753 submit_bh fs/buffer.c:2742 [inline] block_read_full_folio+0x599/0x830 fs/buffer.c:2344 filemap_read_folio+0x137/0x3b0 mm/filemap.c:2502 do_read_cache_folio+0x358/0x590 mm/filemap.c:4107 read_mapping_folio include/linux/pagemap.h:1017 [inline] read_part_sector+0xb6/0x2b0 block/partitions/core.c:724 adfspart_check_ICS+0xb1/0x960 block/partitions/acorn.c:356 check_partition block/partitions/core.c:143 [inline] blk_add_partitions block/partitions/core.c:591 [inline] bdev_disk_changed+0x817/0x1770 block/partitions/core.c:695 blkdev_get_whole+0x380/0x510 block/bdev.c:756 bdev_open+0x31e/0xd30 block/bdev.c:965 blkdev_open+0x470/0x610 block/fops.c:697 do_dentry_open+0x785/0x14e0 fs/open.c:947 vfs_open+0x3b/0x340 fs/open.c:1079 do_open fs/namei.c:4699 [inline] path_openat+0x2e08/0x3860 fs/namei.c:4858 do_file_open+0x23e/0x4a0 fs/namei.c:4887 do_sys_openat2+0x113/0x200 fs/open.c:1364 do_sys_open fs/open.c:1370 [inline] __do_sys_openat fs/open.c:1386 [inline] __se_sys_openat fs/open.c:1381 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1381 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #5 (set->srcu){.+.+}-{0:0}: srcu_lock_sync include/linux/srcu.h:199 [inline] __synchronize_srcu+0xca/0x300 kernel/rcu/srcutree.c:1481 elevator_switch+0x1e8/0x7a0 block/elevator.c:576 elevator_change+0x2cc/0x450 block/elevator.c:681 elevator_set_default+0x36c/0x430 block/elevator.c:754 blk_register_queue+0x3e9/0x4e0 block/blk-sysfs.c:987 __add_disk+0x677/0xd50 block/genhd.c:528 add_disk_fwnode+0xfb/0x480 block/genhd.c:597 add_disk include/linux/blkdev.h:794 [inline] nbd_dev_add+0x72c/0xb50 drivers/block/nbd.c:1984 nbd_init+0x168/0x1f0 drivers/block/nbd.c:2692 do_one_initcall+0x250/0x870 init/main.c:1392 do_initcall_level+0x104/0x190 init/main.c:1454 do_initcalls+0x59/0xa0 init/main.c:1470 kernel_init_freeable+0x2a6/0x3e0 init/main.c:1703 kernel_init+0x1d/0x1d0 init/main.c:1593 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 -> #4 (&q->elevator_lock){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:646 [inline] __mutex_lock+0x1a3/0x1550 kernel/locking/mutex.c:820 elevator_change+0x1b3/0x450 block/elevator.c:679 elevator_set_none+0xb5/0x140 block/elevator.c:769 blk_mq_elv_switch_none block/blk-mq.c:5131 [inline] __blk_mq_update_nr_hw_queues block/blk-mq.c:5176 [inline] blk_mq_update_nr_hw_queues+0x5e7/0x1a60 block/blk-mq.c:5241 nbd_start_device+0x17f/0xb10 drivers/block/nbd.c:1489 nbd_genl_connect+0x165b/0x1cf0 drivers/block/nbd.c:2239 genl_family_rcv_msg_doit+0x22a/0x330 net/netlink/genetlink.c:1114 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline] genl_rcv_msg+0x61c/0x7a0 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0x972/0x9f0 net/socket.c:2698 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #3 (&q->q_usage_counter(io)#50){++++}-{0:0}: blk_alloc_queue+0x546/0x680 block/blk-core.c:461 blk_mq_alloc_queue block/blk-mq.c:4450 [inline] __blk_mq_alloc_disk+0x197/0x390 block/blk-mq.c:4497 nbd_dev_add+0x499/0xb50 drivers/block/nbd.c:1954 nbd_init+0x168/0x1f0 drivers/block/nbd.c:2692 do_one_initcall+0x250/0x870 init/main.c:1392 do_initcall_level+0x104/0x190 init/main.c:1454 do_initcalls+0x59/0xa0 init/main.c:1470 kernel_init_freeable+0x2a6/0x3e0 init/main.c:1703 kernel_init+0x1d/0x1d0 init/main.c:1593 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 -> #2 (fs_reclaim){+.+.}-{0:0}: __fs_reclaim_acquire mm/page_alloc.c:4325 [inline] fs_reclaim_acquire+0x71/0x100 mm/page_alloc.c:4339 might_alloc include/linux/sched/mm.h:317 [inline] slab_pre_alloc_hook mm/slub.c:4520 [inline] slab_alloc_node mm/slub.c:4875 [inline] kmem_cache_alloc_node_noprof+0x4a/0x690 mm/slub.c:4950 __alloc_skb+0x1d0/0x7d0 net/core/skbuff.c:702 alloc_skb include/linux/skbuff.h:1383 [inline] __ip6_append_data+0x2c7c/0x3e90 net/ipv6/ip6_output.c:1698 ip6_append_data+0x10f/0x280 net/ipv6/ip6_output.c:1886 rawv6_sendmsg+0x12d3/0x18e0 net/ipv6/raw.c:913 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0x80a/0x9f0 net/socket.c:2698 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (sk_lock-AF_INET6){+.+.}-{0:0}: lock_sock_nested+0x41/0x100 net/core/sock.c:3783 lock_sock include/net/sock.h:1713 [inline] inet_shutdown+0x6a/0x390 net/ipv4/af_inet.c:915 nbd_mark_nsock_dead+0x2e9/0x560 drivers/block/nbd.c:318 recv_work+0x1c2e/0x1d40 drivers/block/nbd.c:1021 process_one_work kernel/workqueue.c:3302 [inline] process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3385 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3466 kthread+0x388/0x470 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 -> #0 (&nsock->tx_lock){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 __mutex_lock_common kernel/locking/mutex.c:646 [inline] __mutex_lock+0x1a3/0x1550 kernel/locking/mutex.c:820 nbd_handle_cmd drivers/block/nbd.c:1143 [inline] nbd_queue_rq+0x37b/0x1100 drivers/block/nbd.c:1207 blk_mq_dispatch_rq_list+0xa70/0x1910 block/blk-mq.c:2148 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:168 [inline] blk_mq_do_dispatch_sched block/blk-mq-sched.c:182 [inline] __blk_mq_sched_dispatch_requests+0xdcc/0x1600 block/blk-mq-sched.c:307 blk_mq_sched_dispatch_requests+0xd7/0x190 block/blk-mq-sched.c:329 blk_mq_run_hw_queue+0x348/0x4f0 block/blk-mq.c:2386 blk_mq_dispatch_list+0xd16/0xe10 include/linux/spinlock.h:-1 blk_mq_flush_plug_list+0x48d/0x570 block/blk-mq.c:2997 __blk_flush_plug+0x3ed/0x4d0 block/blk-core.c:1230 blk_finish_plug block/blk-core.c:1257 [inline] __submit_bio+0x28d/0x580 block/blk-core.c:649 __submit_bio_noacct_mq block/blk-core.c:722 [inline] submit_bio_noacct_nocheck+0x2f4/0xa40 block/blk-core.c:753 submit_bh fs/buffer.c:2742 [inline] block_read_full_folio+0x599/0x830 fs/buffer.c:2344 filemap_read_folio+0x137/0x3b0 mm/filemap.c:2502 do_read_cache_folio+0x358/0x590 mm/filemap.c:4107 read_mapping_folio include/linux/pagemap.h:1017 [inline] read_part_sector+0xb6/0x2b0 block/partitions/core.c:724 adfspart_check_ICS+0xb1/0x960 block/partitions/acorn.c:356 check_partition block/partitions/core.c:143 [inline] blk_add_partitions block/partitions/core.c:591 [inline] bdev_disk_changed+0x817/0x1770 block/partitions/core.c:695 blkdev_get_whole+0x380/0x510 block/bdev.c:756 bdev_open+0x31e/0xd30 block/bdev.c:965 blkdev_open+0x470/0x610 block/fops.c:697 do_dentry_open+0x785/0x14e0 fs/open.c:947 vfs_open+0x3b/0x340 fs/open.c:1079 do_open fs/namei.c:4699 [inline] path_openat+0x2e08/0x3860 fs/namei.c:4858 do_file_open+0x23e/0x4a0 fs/namei.c:4887 do_sys_openat2+0x113/0x200 fs/open.c:1364 do_sys_open fs/open.c:1370 [inline] __do_sys_openat fs/open.c:1386 [inline] __se_sys_openat fs/open.c:1381 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1381 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: &nsock->tx_lock --> set->srcu --> &cmd->lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&cmd->lock); lock(set->srcu); lock(&cmd->lock); lock(&nsock->tx_lock); *** DEADLOCK *** 3 locks held by udevd/5653: #0: ffff8880276fb350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30 block/bdev.c:953 #1: ffff888025710698 (set->srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:187 [inline] #1: ffff888025710698 (set->srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:294 [inline] #1: ffff888025710698 (set->srcu){.+.+}-{0:0}, at: blk_mq_run_hw_queue+0x31f/0x4f0 block/blk-mq.c:2386 #2: ffff888073020178 (&cmd->lock){+.+.}-{4:4}, at: nbd_queue_rq+0xc6/0x1100 drivers/block/nbd.c:1199 stack backtrace: CPU: 1 UID: 0 PID: 5653 Comm: udevd Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2043 check_noncircular+0x12e/0x150 kernel/locking/lockdep.c:2175 check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 __mutex_lock_common kernel/locking/mutex.c:646 [inline] __mutex_lock+0x1a3/0x1550 kernel/locking/mutex.c:820 nbd_handle_cmd drivers/block/nbd.c:1143 [inline] nbd_queue_rq+0x37b/0x1100 drivers/block/nbd.c:1207 blk_mq_dispatch_rq_list+0xa70/0x1910 block/blk-mq.c:2148 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:168 [inline] blk_mq_do_dispatch_sched block/blk-mq-sched.c:182 [inline] __blk_mq_sched_dispatch_requests+0xdcc/0x1600 block/blk-mq-sched.c:307 blk_mq_sched_dispatch_requests+0xd7/0x190 block/blk-mq-sched.c:329 blk_mq_run_hw_queue+0x348/0x4f0 block/blk-mq.c:2386 blk_mq_dispatch_list+0xd16/0xe10 include/linux/spinlock.h:-1 blk_mq_flush_plug_list+0x48d/0x570 block/blk-mq.c:2997 __blk_flush_plug+0x3ed/0x4d0 block/blk-core.c:1230 blk_finish_plug block/blk-core.c:1257 [inline] __submit_bio+0x28d/0x580 block/blk-core.c:649 __submit_bio_noacct_mq block/blk-core.c:722 [inline] submit_bio_noacct_nocheck+0x2f4/0xa40 block/blk-core.c:753 submit_bh fs/buffer.c:2742 [inline] block_read_full_folio+0x599/0x830 fs/buffer.c:2344 filemap_read_folio+0x137/0x3b0 mm/filemap.c:2502 do_read_cache_folio+0x358/0x590 mm/filemap.c:4107 read_mapping_folio include/linux/pagemap.h:1017 [inline] read_part_sector+0xb6/0x2b0 block/partitions/core.c:724 adfspart_check_ICS+0xb1/0x960 block/partitions/acorn.c:356 check_partition block/partitions/core.c:143 [inline] blk_add_partitions block/partitions/core.c:591 [inline] bdev_disk_changed+0x817/0x1770 block/partitions/core.c:695 blkdev_get_whole+0x380/0x510 block/bdev.c:756 bdev_open+0x31e/0xd30 block/bdev.c:965 blkdev_open+0x470/0x610 block/fops.c:697 do_dentry_open+0x785/0x14e0 fs/open.c:947 vfs_open+0x3b/0x340 fs/open.c:1079 do_open fs/namei.c:4699 [inline] path_openat+0x2e08/0x3860 fs/namei.c:4858 do_file_open+0x23e/0x4a0 fs/namei.c:4887 do_sys_openat2+0x113/0x200 fs/open.c:1364 do_sys_open fs/open.c:1370 [inline] __do_sys_openat fs/open.c:1386 [inline] __se_sys_openat fs/open.c:1381 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1381 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1517ea7407 Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff RSP: 002b:00007ffec0f1fd50 EFLAGS: 00000202 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f1518593880 RCX: 00007f1517ea7407 RDX: 00000000000a0800 RSI: 000055c80e17ae60 RDI: ffffffffffffff9c RBP: 000055c80e16b910 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 000055c80e17dbf0 R13: 000055c80e179190 R14: 0000000000000000 R15: 000055c80e17dbf0 block nbd1: Dead connection, failed to find a fallback block nbd1: shutting down sockets I/O error, dev nbd1, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 0, async page read I/O error, dev nbd1, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 1, async page read I/O error, dev nbd1, sector 4 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 2, async page read I/O error, dev nbd1, sector 6 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 3, async page read I/O error, dev nbd1, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 0, async page read I/O error, dev nbd1, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 1, async page read I/O error, dev nbd1, sector 4 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 2, async page read I/O error, dev nbd1, sector 6 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 3, async page read I/O error, dev nbd1, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 0, async page read I/O error, dev nbd1, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 1, async page read ldm_validate_partition_table(): Disk read failed. Dev nbd1: unable to read RDB block 0 nbd1: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd1: unable to read RDB block 0 nbd1: unable to read partition table block nbd3: Dead connection, failed to find a fallback block nbd3: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd3: unable to read RDB block 0 nbd3: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd3: unable to read RDB block 0 nbd3: unable to read partition table block nbd5: Send control failed (result -32) block nbd5: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd5: unable to read RDB block 0 nbd5: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd5: unable to read RDB block 0 nbd5: unable to read partition table block nbd7: Send control failed (result -32) block nbd7: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd7: unable to read RDB block 0 nbd7: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd7: unable to read RDB block 0 nbd7: unable to read partition table block nbd9: Dead connection, failed to find a fallback block nbd9: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd9: unable to read RDB block 0 nbd9: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd9: unable to read RDB block 0 nbd9: unable to read partition table block nbd11: Send control failed (result -32) block nbd11: Request send failed, requeueing block nbd11: Dead connection, failed to find a fallback ldm_validate_partition_table(): Disk read failed. Dev nbd11: unable to read RDB block 0 nbd11: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd11: unable to read RDB block 0 nbd11: unable to read partition table block nbd13: Send control failed (result -32) block nbd13: Request send failed, requeueing block nbd13: Dead connection, failed to find a fallback ldm_validate_partition_table(): Disk read failed. Dev nbd13: unable to read RDB block 0 nbd13: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd13: unable to read RDB block 0 nbd13: unable to read partition table block nbd15: Dead connection, failed to find a fallback block nbd15: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd15: unable to read RDB block 0 nbd15: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd15: unable to read RDB block 0 nbd15: unable to read partition table block nbd17: Send control failed (result -32) block nbd17: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd17: unable to read RDB block 0 nbd17: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd17: unable to read RDB block 0 nbd17: unable to read partition table block nbd19: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd19: unable to read RDB block 0 nbd19: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd19: unable to read RDB block 0 nbd19: unable to read partition table block nbd21: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd21: unable to read RDB block 0 nbd21: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd21: unable to read RDB block 0 nbd21: unable to read partition table block nbd23: Send control failed (result -32) block nbd23: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd23: unable to read RDB block 0 nbd23: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd23: unable to read RDB block 0 nbd23: unable to read partition table block nbd25: Send control failed (result -32) block nbd25: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd25: unable to read RDB block 0 nbd25: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd25: unable to read RDB block 0 nbd25: unable to read partition table block nbd27: Send control failed (result -32) block nbd27: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd27: unable to read RDB block 0 nbd27: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd27: unable to read RDB block 0 nbd27: unable to read partition table block nbd29: Send control failed (result -32) block nbd29: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd29: unable to read RDB block 0 nbd29: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd29: unable to read RDB block 0 nbd29: unable to read partition table block nbd31: Send control failed (result -32) block nbd31: Request send failed, requeueing blk_print_req_error: 2209 callbacks suppressed I/O error, dev nbd31, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 buffer_io_error: 2210 callbacks suppressed Buffer I/O error on dev nbd31, logical block 1, async page read I/O error, dev nbd31, sector 4 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd31, logical block 2, async page read I/O error, dev nbd31, sector 6 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd31, logical block 3, async page read I/O error, dev nbd31, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd31, logical block 0, async page read I/O error, dev nbd31, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd31, logical block 1, async page read I/O error, dev nbd31, sector 4 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd31, logical block 2, async page read I/O error, dev nbd31, sector 6 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd31, logical block 3, async page read I/O error, dev nbd31, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd31, logical block 0, async page read I/O error, dev nbd31, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd31, logical block 1, async page read ldm_validate_partition_table(): Disk read failed. Dev nbd31: unable to read RDB block 0 nbd31: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd31: unable to read RDB block 0 nbd31: unable to read partition table block nbd33: Dead connection, failed to find a fallback ldm_validate_partition_table(): Disk read failed. Dev nbd33: unable to read RDB block 0 nbd33: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd33: unable to read RDB block 0 nbd33: unable to read partition table nbd_send_cmd: 1 callbacks suppressed block nbd35: Send control failed (result -32) nbd_send_cmd: 1 callbacks suppressed block nbd35: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd35: unable to read RDB block 0 nbd35: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd35: unable to read RDB block 0 nbd35: unable to read partition table block nbd37: Send control failed (result -32) block nbd37: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd37: unable to read RDB block 0 nbd37: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd37: unable to read RDB block 0 nbd37: unable to read partition table block nbd39: Send control failed (result -32) block nbd39: Request send failed, requeueing block nbd39: Dead connection, failed to find a fallback ldm_validate_partition_table(): Disk read failed. Dev nbd39: unable to read RDB block 0 nbd39: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd39: unable to read RDB block 0 nbd39: unable to read partition table block nbd41: Dead connection, failed to find a fallback block nbd41: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd41: unable to read RDB block 0 nbd41: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd41: unable to read RDB block 0 nbd41: unable to read partition table block nbd43: Dead connection, failed to find a fallback block nbd43: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd43: unable to read RDB block 0 nbd43: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd43: unable to read RDB block 0 nbd43: unable to read partition table block nbd45: Dead connection, failed to find a fallback block nbd45: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd45: unable to read RDB block 0 nbd45: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd45: unable to read RDB block 0 nbd45: unable to read partition table block nbd47: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd47: unable to read RDB block 0 nbd47: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd47: unable to read RDB block 0 nbd47: unable to read partition table block nbd49: Send control failed (result -32) block nbd49: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd49: unable to read RDB block 0 nbd49: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd49: unable to read RDB block 0 nbd49: unable to read partition table block nbd51: Send control failed (result -32) block nbd51: Request send failed, requeueing block nbd51: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd51: unable to read RDB block 0 nbd51: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd51: unable to read RDB block 0 nbd51: unable to read partition table final repro crashed as (corrupted=false): ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ udevd/5653 is trying to acquire lock: ffff88807c4f1a68 (&nsock->tx_lock){+.+.}-{4:4}, at: nbd_handle_cmd drivers/block/nbd.c:1143 [inline] ffff88807c4f1a68 (&nsock->tx_lock){+.+.}-{4:4}, at: nbd_queue_rq+0x37b/0x1100 drivers/block/nbd.c:1207 but task is already holding lock: ffff888073020178 (&cmd->lock){+.+.}-{4:4}, at: nbd_queue_rq+0xc6/0x1100 drivers/block/nbd.c:1199 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #6 (&cmd->lock){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:646 [inline] __mutex_lock+0x1a3/0x1550 kernel/locking/mutex.c:820 nbd_queue_rq+0xc6/0x1100 drivers/block/nbd.c:1199 blk_mq_dispatch_rq_list+0xa70/0x1910 block/blk-mq.c:2148 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:168 [inline] blk_mq_do_dispatch_sched block/blk-mq-sched.c:182 [inline] __blk_mq_sched_dispatch_requests+0xdcc/0x1600 block/blk-mq-sched.c:307 blk_mq_sched_dispatch_requests+0xd7/0x190 block/blk-mq-sched.c:329 blk_mq_run_hw_queue+0x348/0x4f0 block/blk-mq.c:2386 blk_mq_dispatch_list+0xd16/0xe10 include/linux/spinlock.h:-1 blk_mq_flush_plug_list+0x48d/0x570 block/blk-mq.c:2997 __blk_flush_plug+0x3ed/0x4d0 block/blk-core.c:1230 blk_finish_plug block/blk-core.c:1257 [inline] __submit_bio+0x28d/0x580 block/blk-core.c:649 __submit_bio_noacct_mq block/blk-core.c:722 [inline] submit_bio_noacct_nocheck+0x2f4/0xa40 block/blk-core.c:753 submit_bh fs/buffer.c:2742 [inline] block_read_full_folio+0x599/0x830 fs/buffer.c:2344 filemap_read_folio+0x137/0x3b0 mm/filemap.c:2502 do_read_cache_folio+0x358/0x590 mm/filemap.c:4107 read_mapping_folio include/linux/pagemap.h:1017 [inline] read_part_sector+0xb6/0x2b0 block/partitions/core.c:724 adfspart_check_ICS+0xb1/0x960 block/partitions/acorn.c:356 check_partition block/partitions/core.c:143 [inline] blk_add_partitions block/partitions/core.c:591 [inline] bdev_disk_changed+0x817/0x1770 block/partitions/core.c:695 blkdev_get_whole+0x380/0x510 block/bdev.c:756 bdev_open+0x31e/0xd30 block/bdev.c:965 blkdev_open+0x470/0x610 block/fops.c:697 do_dentry_open+0x785/0x14e0 fs/open.c:947 vfs_open+0x3b/0x340 fs/open.c:1079 do_open fs/namei.c:4699 [inline] path_openat+0x2e08/0x3860 fs/namei.c:4858 do_file_open+0x23e/0x4a0 fs/namei.c:4887 do_sys_openat2+0x113/0x200 fs/open.c:1364 do_sys_open fs/open.c:1370 [inline] __do_sys_openat fs/open.c:1386 [inline] __se_sys_openat fs/open.c:1381 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1381 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #5 (set->srcu){.+.+}-{0:0}: srcu_lock_sync include/linux/srcu.h:199 [inline] __synchronize_srcu+0xca/0x300 kernel/rcu/srcutree.c:1481 elevator_switch+0x1e8/0x7a0 block/elevator.c:576 elevator_change+0x2cc/0x450 block/elevator.c:681 elevator_set_default+0x36c/0x430 block/elevator.c:754 blk_register_queue+0x3e9/0x4e0 block/blk-sysfs.c:987 __add_disk+0x677/0xd50 block/genhd.c:528 add_disk_fwnode+0xfb/0x480 block/genhd.c:597 add_disk include/linux/blkdev.h:794 [inline] nbd_dev_add+0x72c/0xb50 drivers/block/nbd.c:1984 nbd_init+0x168/0x1f0 drivers/block/nbd.c:2692 do_one_initcall+0x250/0x870 init/main.c:1392 do_initcall_level+0x104/0x190 init/main.c:1454 do_initcalls+0x59/0xa0 init/main.c:1470 kernel_init_freeable+0x2a6/0x3e0 init/main.c:1703 kernel_init+0x1d/0x1d0 init/main.c:1593 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 -> #4 (&q->elevator_lock){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:646 [inline] __mutex_lock+0x1a3/0x1550 kernel/locking/mutex.c:820 elevator_change+0x1b3/0x450 block/elevator.c:679 elevator_set_none+0xb5/0x140 block/elevator.c:769 blk_mq_elv_switch_none block/blk-mq.c:5131 [inline] __blk_mq_update_nr_hw_queues block/blk-mq.c:5176 [inline] blk_mq_update_nr_hw_queues+0x5e7/0x1a60 block/blk-mq.c:5241 nbd_start_device+0x17f/0xb10 drivers/block/nbd.c:1489 nbd_genl_connect+0x165b/0x1cf0 drivers/block/nbd.c:2239 genl_family_rcv_msg_doit+0x22a/0x330 net/netlink/genetlink.c:1114 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline] genl_rcv_msg+0x61c/0x7a0 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0x972/0x9f0 net/socket.c:2698 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #3 (&q->q_usage_counter(io)#50){++++}-{0:0}: blk_alloc_queue+0x546/0x680 block/blk-core.c:461 blk_mq_alloc_queue block/blk-mq.c:4450 [inline] __blk_mq_alloc_disk+0x197/0x390 block/blk-mq.c:4497 nbd_dev_add+0x499/0xb50 drivers/block/nbd.c:1954 nbd_init+0x168/0x1f0 drivers/block/nbd.c:2692 do_one_initcall+0x250/0x870 init/main.c:1392 do_initcall_level+0x104/0x190 init/main.c:1454 do_initcalls+0x59/0xa0 init/main.c:1470 kernel_init_freeable+0x2a6/0x3e0 init/main.c:1703 kernel_init+0x1d/0x1d0 init/main.c:1593 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 -> #2 (fs_reclaim){+.+.}-{0:0}: __fs_reclaim_acquire mm/page_alloc.c:4325 [inline] fs_reclaim_acquire+0x71/0x100 mm/page_alloc.c:4339 might_alloc include/linux/sched/mm.h:317 [inline] slab_pre_alloc_hook mm/slub.c:4520 [inline] slab_alloc_node mm/slub.c:4875 [inline] kmem_cache_alloc_node_noprof+0x4a/0x690 mm/slub.c:4950 __alloc_skb+0x1d0/0x7d0 net/core/skbuff.c:702 alloc_skb include/linux/skbuff.h:1383 [inline] __ip6_append_data+0x2c7c/0x3e90 net/ipv6/ip6_output.c:1698 ip6_append_data+0x10f/0x280 net/ipv6/ip6_output.c:1886 rawv6_sendmsg+0x12d3/0x18e0 net/ipv6/raw.c:913 sock_sendmsg_nosec net/socket.c:787 [inline] __sock_sendmsg net/socket.c:802 [inline] ____sys_sendmsg+0x80a/0x9f0 net/socket.c:2698 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2752 __sys_sendmsg net/socket.c:2784 [inline] __do_sys_sendmsg net/socket.c:2789 [inline] __se_sys_sendmsg net/socket.c:2787 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (sk_lock-AF_INET6){+.+.}-{0:0}: lock_sock_nested+0x41/0x100 net/core/sock.c:3783 lock_sock include/net/sock.h:1713 [inline] inet_shutdown+0x6a/0x390 net/ipv4/af_inet.c:915 nbd_mark_nsock_dead+0x2e9/0x560 drivers/block/nbd.c:318 recv_work+0x1c2e/0x1d40 drivers/block/nbd.c:1021 process_one_work kernel/workqueue.c:3302 [inline] process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3385 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3466 kthread+0x388/0x470 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 -> #0 (&nsock->tx_lock){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 __mutex_lock_common kernel/locking/mutex.c:646 [inline] __mutex_lock+0x1a3/0x1550 kernel/locking/mutex.c:820 nbd_handle_cmd drivers/block/nbd.c:1143 [inline] nbd_queue_rq+0x37b/0x1100 drivers/block/nbd.c:1207 blk_mq_dispatch_rq_list+0xa70/0x1910 block/blk-mq.c:2148 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:168 [inline] blk_mq_do_dispatch_sched block/blk-mq-sched.c:182 [inline] __blk_mq_sched_dispatch_requests+0xdcc/0x1600 block/blk-mq-sched.c:307 blk_mq_sched_dispatch_requests+0xd7/0x190 block/blk-mq-sched.c:329 blk_mq_run_hw_queue+0x348/0x4f0 block/blk-mq.c:2386 blk_mq_dispatch_list+0xd16/0xe10 include/linux/spinlock.h:-1 blk_mq_flush_plug_list+0x48d/0x570 block/blk-mq.c:2997 __blk_flush_plug+0x3ed/0x4d0 block/blk-core.c:1230 blk_finish_plug block/blk-core.c:1257 [inline] __submit_bio+0x28d/0x580 block/blk-core.c:649 __submit_bio_noacct_mq block/blk-core.c:722 [inline] submit_bio_noacct_nocheck+0x2f4/0xa40 block/blk-core.c:753 submit_bh fs/buffer.c:2742 [inline] block_read_full_folio+0x599/0x830 fs/buffer.c:2344 filemap_read_folio+0x137/0x3b0 mm/filemap.c:2502 do_read_cache_folio+0x358/0x590 mm/filemap.c:4107 read_mapping_folio include/linux/pagemap.h:1017 [inline] read_part_sector+0xb6/0x2b0 block/partitions/core.c:724 adfspart_check_ICS+0xb1/0x960 block/partitions/acorn.c:356 check_partition block/partitions/core.c:143 [inline] blk_add_partitions block/partitions/core.c:591 [inline] bdev_disk_changed+0x817/0x1770 block/partitions/core.c:695 blkdev_get_whole+0x380/0x510 block/bdev.c:756 bdev_open+0x31e/0xd30 block/bdev.c:965 blkdev_open+0x470/0x610 block/fops.c:697 do_dentry_open+0x785/0x14e0 fs/open.c:947 vfs_open+0x3b/0x340 fs/open.c:1079 do_open fs/namei.c:4699 [inline] path_openat+0x2e08/0x3860 fs/namei.c:4858 do_file_open+0x23e/0x4a0 fs/namei.c:4887 do_sys_openat2+0x113/0x200 fs/open.c:1364 do_sys_open fs/open.c:1370 [inline] __do_sys_openat fs/open.c:1386 [inline] __se_sys_openat fs/open.c:1381 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1381 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: &nsock->tx_lock --> set->srcu --> &cmd->lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&cmd->lock); lock(set->srcu); lock(&cmd->lock); lock(&nsock->tx_lock); *** DEADLOCK *** 3 locks held by udevd/5653: #0: ffff8880276fb350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30 block/bdev.c:953 #1: ffff888025710698 (set->srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:187 [inline] #1: ffff888025710698 (set->srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:294 [inline] #1: ffff888025710698 (set->srcu){.+.+}-{0:0}, at: blk_mq_run_hw_queue+0x31f/0x4f0 block/blk-mq.c:2386 #2: ffff888073020178 (&cmd->lock){+.+.}-{4:4}, at: nbd_queue_rq+0xc6/0x1100 drivers/block/nbd.c:1199 stack backtrace: CPU: 1 UID: 0 PID: 5653 Comm: udevd Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2043 check_noncircular+0x12e/0x150 kernel/locking/lockdep.c:2175 check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 __mutex_lock_common kernel/locking/mutex.c:646 [inline] __mutex_lock+0x1a3/0x1550 kernel/locking/mutex.c:820 nbd_handle_cmd drivers/block/nbd.c:1143 [inline] nbd_queue_rq+0x37b/0x1100 drivers/block/nbd.c:1207 blk_mq_dispatch_rq_list+0xa70/0x1910 block/blk-mq.c:2148 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:168 [inline] blk_mq_do_dispatch_sched block/blk-mq-sched.c:182 [inline] __blk_mq_sched_dispatch_requests+0xdcc/0x1600 block/blk-mq-sched.c:307 blk_mq_sched_dispatch_requests+0xd7/0x190 block/blk-mq-sched.c:329 blk_mq_run_hw_queue+0x348/0x4f0 block/blk-mq.c:2386 blk_mq_dispatch_list+0xd16/0xe10 include/linux/spinlock.h:-1 blk_mq_flush_plug_list+0x48d/0x570 block/blk-mq.c:2997 __blk_flush_plug+0x3ed/0x4d0 block/blk-core.c:1230 blk_finish_plug block/blk-core.c:1257 [inline] __submit_bio+0x28d/0x580 block/blk-core.c:649 __submit_bio_noacct_mq block/blk-core.c:722 [inline] submit_bio_noacct_nocheck+0x2f4/0xa40 block/blk-core.c:753 submit_bh fs/buffer.c:2742 [inline] block_read_full_folio+0x599/0x830 fs/buffer.c:2344 filemap_read_folio+0x137/0x3b0 mm/filemap.c:2502 do_read_cache_folio+0x358/0x590 mm/filemap.c:4107 read_mapping_folio include/linux/pagemap.h:1017 [inline] read_part_sector+0xb6/0x2b0 block/partitions/core.c:724 adfspart_check_ICS+0xb1/0x960 block/partitions/acorn.c:356 check_partition block/partitions/core.c:143 [inline] blk_add_partitions block/partitions/core.c:591 [inline] bdev_disk_changed+0x817/0x1770 block/partitions/core.c:695 blkdev_get_whole+0x380/0x510 block/bdev.c:756 bdev_open+0x31e/0xd30 block/bdev.c:965 blkdev_open+0x470/0x610 block/fops.c:697 do_dentry_open+0x785/0x14e0 fs/open.c:947 vfs_open+0x3b/0x340 fs/open.c:1079 do_open fs/namei.c:4699 [inline] path_openat+0x2e08/0x3860 fs/namei.c:4858 do_file_open+0x23e/0x4a0 fs/namei.c:4887 do_sys_openat2+0x113/0x200 fs/open.c:1364 do_sys_open fs/open.c:1370 [inline] __do_sys_openat fs/open.c:1386 [inline] __se_sys_openat fs/open.c:1381 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1381 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1517ea7407 Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff RSP: 002b:00007ffec0f1fd50 EFLAGS: 00000202 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f1518593880 RCX: 00007f1517ea7407 RDX: 00000000000a0800 RSI: 000055c80e17ae60 RDI: ffffffffffffff9c RBP: 000055c80e16b910 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 000055c80e17dbf0 R13: 000055c80e179190 R14: 0000000000000000 R15: 000055c80e17dbf0 block nbd1: Dead connection, failed to find a fallback block nbd1: shutting down sockets I/O error, dev nbd1, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 0, async page read I/O error, dev nbd1, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 1, async page read I/O error, dev nbd1, sector 4 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 2, async page read I/O error, dev nbd1, sector 6 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 3, async page read I/O error, dev nbd1, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 0, async page read I/O error, dev nbd1, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 1, async page read I/O error, dev nbd1, sector 4 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 2, async page read I/O error, dev nbd1, sector 6 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 3, async page read I/O error, dev nbd1, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 0, async page read I/O error, dev nbd1, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd1, logical block 1, async page read ldm_validate_partition_table(): Disk read failed. Dev nbd1: unable to read RDB block 0 nbd1: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd1: unable to read RDB block 0 nbd1: unable to read partition table block nbd3: Dead connection, failed to find a fallback block nbd3: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd3: unable to read RDB block 0 nbd3: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd3: unable to read RDB block 0 nbd3: unable to read partition table block nbd5: Send control failed (result -32) block nbd5: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd5: unable to read RDB block 0 nbd5: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd5: unable to read RDB block 0 nbd5: unable to read partition table block nbd7: Send control failed (result -32) block nbd7: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd7: unable to read RDB block 0 nbd7: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd7: unable to read RDB block 0 nbd7: unable to read partition table block nbd9: Dead connection, failed to find a fallback block nbd9: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd9: unable to read RDB block 0 nbd9: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd9: unable to read RDB block 0 nbd9: unable to read partition table block nbd11: Send control failed (result -32) block nbd11: Request send failed, requeueing block nbd11: Dead connection, failed to find a fallback ldm_validate_partition_table(): Disk read failed. Dev nbd11: unable to read RDB block 0 nbd11: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd11: unable to read RDB block 0 nbd11: unable to read partition table block nbd13: Send control failed (result -32) block nbd13: Request send failed, requeueing block nbd13: Dead connection, failed to find a fallback ldm_validate_partition_table(): Disk read failed. Dev nbd13: unable to read RDB block 0 nbd13: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd13: unable to read RDB block 0 nbd13: unable to read partition table block nbd15: Dead connection, failed to find a fallback block nbd15: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd15: unable to read RDB block 0 nbd15: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd15: unable to read RDB block 0 nbd15: unable to read partition table block nbd17: Send control failed (result -32) block nbd17: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd17: unable to read RDB block 0 nbd17: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd17: unable to read RDB block 0 nbd17: unable to read partition table block nbd19: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd19: unable to read RDB block 0 nbd19: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd19: unable to read RDB block 0 nbd19: unable to read partition table block nbd21: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd21: unable to read RDB block 0 nbd21: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd21: unable to read RDB block 0 nbd21: unable to read partition table block nbd23: Send control failed (result -32) block nbd23: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd23: unable to read RDB block 0 nbd23: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd23: unable to read RDB block 0 nbd23: unable to read partition table block nbd25: Send control failed (result -32) block nbd25: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd25: unable to read RDB block 0 nbd25: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd25: unable to read RDB block 0 nbd25: unable to read partition table block nbd27: Send control failed (result -32) block nbd27: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd27: unable to read RDB block 0 nbd27: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd27: unable to read RDB block 0 nbd27: unable to read partition table block nbd29: Send control failed (result -32) block nbd29: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd29: unable to read RDB block 0 nbd29: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd29: unable to read RDB block 0 nbd29: unable to read partition table block nbd31: Send control failed (result -32) block nbd31: Request send failed, requeueing blk_print_req_error: 2209 callbacks suppressed I/O error, dev nbd31, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 buffer_io_error: 2210 callbacks suppressed Buffer I/O error on dev nbd31, logical block 1, async page read I/O error, dev nbd31, sector 4 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd31, logical block 2, async page read I/O error, dev nbd31, sector 6 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd31, logical block 3, async page read I/O error, dev nbd31, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd31, logical block 0, async page read I/O error, dev nbd31, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd31, logical block 1, async page read I/O error, dev nbd31, sector 4 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd31, logical block 2, async page read I/O error, dev nbd31, sector 6 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd31, logical block 3, async page read I/O error, dev nbd31, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd31, logical block 0, async page read I/O error, dev nbd31, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev nbd31, logical block 1, async page read ldm_validate_partition_table(): Disk read failed. Dev nbd31: unable to read RDB block 0 nbd31: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd31: unable to read RDB block 0 nbd31: unable to read partition table block nbd33: Dead connection, failed to find a fallback ldm_validate_partition_table(): Disk read failed. Dev nbd33: unable to read RDB block 0 nbd33: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd33: unable to read RDB block 0 nbd33: unable to read partition table nbd_send_cmd: 1 callbacks suppressed block nbd35: Send control failed (result -32) nbd_send_cmd: 1 callbacks suppressed block nbd35: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd35: unable to read RDB block 0 nbd35: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd35: unable to read RDB block 0 nbd35: unable to read partition table block nbd37: Send control failed (result -32) block nbd37: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd37: unable to read RDB block 0 nbd37: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd37: unable to read RDB block 0 nbd37: unable to read partition table block nbd39: Send control failed (result -32) block nbd39: Request send failed, requeueing block nbd39: Dead connection, failed to find a fallback ldm_validate_partition_table(): Disk read failed. Dev nbd39: unable to read RDB block 0 nbd39: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd39: unable to read RDB block 0 nbd39: unable to read partition table block nbd41: Dead connection, failed to find a fallback block nbd41: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd41: unable to read RDB block 0 nbd41: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd41: unable to read RDB block 0 nbd41: unable to read partition table block nbd43: Dead connection, failed to find a fallback block nbd43: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd43: unable to read RDB block 0 nbd43: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd43: unable to read RDB block 0 nbd43: unable to read partition table block nbd45: Dead connection, failed to find a fallback block nbd45: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd45: unable to read RDB block 0 nbd45: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd45: unable to read RDB block 0 nbd45: unable to read partition table block nbd47: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd47: unable to read RDB block 0 nbd47: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd47: unable to read RDB block 0 nbd47: unable to read partition table block nbd49: Send control failed (result -32) block nbd49: Request send failed, requeueing ldm_validate_partition_table(): Disk read failed. Dev nbd49: unable to read RDB block 0 nbd49: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd49: unable to read RDB block 0 nbd49: unable to read partition table block nbd51: Send control failed (result -32) block nbd51: Request send failed, requeueing block nbd51: shutting down sockets ldm_validate_partition_table(): Disk read failed. Dev nbd51: unable to read RDB block 0 nbd51: unable to read partition table ldm_validate_partition_table(): Disk read failed. Dev nbd51: unable to read RDB block 0 nbd51: unable to read partition table