Extracting prog: 6m0.188070228s Minimizing prog: 43m13.302574187s Simplifying prog options: 0s Extracting C: 4m19.409388508s Simplifying C: 54m42.982058403s 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT detailed listing: executing program 0: r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE(r0, 0xab02, 0xffffff00) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f000000ae00)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r0, 0xab00, r1) ioctl$NBD_DO_IT(r0, 0xab03) 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT detailed listing: executing program 0: r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE(r0, 0xab02, 0xffffff00) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f000000ae00)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r0, 0xab00, r1) ioctl$NBD_DO_IT(r0, 0xab03) program crashed: INFO: task hung in bdev_release single: successfully extracted reproducer found reproducer with 5 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK detailed listing: executing program 0: r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE(r0, 0xab02, 0xffffff00) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f000000ae00)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r0, 0xab00, r1) 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_DO_IT detailed listing: executing program 0: r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE(r0, 0xab02, 0xffffff00) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f000000ae00)) ioctl$NBD_DO_IT(r0, 0xab03) 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT detailed listing: executing program 0: r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE(r0, 0xab02, 0xffffff00) ioctl$NBD_SET_SOCK(r0, 0xab00, 0xffffffffffffffff) ioctl$NBD_DO_IT(r0, 0xab03) 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT detailed listing: executing program 0: r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f000000ae00)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r0, 0xab00, r1) ioctl$NBD_DO_IT(r0, 0xab03) 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT detailed listing: executing program 0: ioctl$NBD_SET_SIZE(0xffffffffffffffff, 0xab02, 0xffffff00) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f000000ae00)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(0xffffffffffffffff, 0xab00, r0) ioctl$NBD_DO_IT(0xffffffffffffffff, 0xab03) 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT detailed listing: executing program 0: r0 = syz_open_dev$ndb(0x0, 0x0, 0x0) ioctl$NBD_SET_SIZE(r0, 0xab02, 0xffffff00) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f000000ae00)={0xffffffffffffffff}) ioctl$NBD_SET_SOCK(r0, 0xab00, r1) ioctl$NBD_DO_IT(r0, 0xab03) 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT detailed listing: executing program 0: r0 = syz_open_dev$ndb(&(0x7f0000000000), 0x0, 0x0) ioctl$NBD_SET_SIZE(r0, 0xab02, 0xffffff00) socketpair$nbd(0x1, 0x1, 0x0, 0x0) ioctl$NBD_SET_SOCK(r0, 0xab00, 0xffffffffffffffff) ioctl$NBD_DO_IT(r0, 0xab03) 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT program crashed: INFO: task hung in bdev_release simplifying C reproducer testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:true 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT program crashed: INFO: task hung in bdev_release testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT program crashed: INFO: task hung in bdev_release testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT program crashed: INFO: task hung in bdev_release testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT program crashed: INFO: task hung in bdev_release testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT program crashed: INFO: task hung in bdev_release testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT program crashed: INFO: task hung in bdev_release testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT program crashed: INFO: task hung in bdev_release testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT program crashed: INFO: task hung in bdev_release testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT program crashed: INFO: task hung in bdev_release testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT program crashed: INFO: task hung in bdev_release testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT program crashed: INFO: task hung in bdev_release testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT program crashed: INFO: task hung in bdev_release testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT program did not crash testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$ndb-ioctl$NBD_SET_SIZE-socketpair$nbd-ioctl$NBD_SET_SOCK-ioctl$NBD_DO_IT program crashed: INFO: task hung in bdev_release reproducing took 1h48m15.882111821s repro crashed as (corrupted=false): INFO: task syz-executor210:6431 blocked for more than 143 seconds. Not tainted 6.13.0-rc3-syzkaller-g573067a5a685 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor210 state:D stack:0 pid:6431 tgid:6429 ppid:6413 flags:0x0000000d Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5369 [inline] __schedule+0x1744/0x27f0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6848 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6905 __mutex_lock_common+0xeec/0x28f4 kernel/locking/mutex.c:665 __mutex_lock kernel/locking/mutex.c:735 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:787 bdev_release+0x168/0x644 block/bdev.c:1087 blkdev_release+0x20/0x34 block/fops.c:635 __fput+0x1bc/0x75c fs/file_table.c:450 ____fput+0x20/0x30 fs/file_table.c:478 task_work_run+0x230/0x2e0 kernel/task_work.c:239 get_signal+0x1358/0x1534 kernel/signal.c:2790 do_signal+0x22c/0x39f4 arch/arm64/kernel/signal.c:1663 do_notify_resume+0x74/0x1f4 arch/arm64/kernel/entry-common.c:148 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffff80008fb82560 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336 1 lock held by klogd/6022: #0: ffff0001b37f6698 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:598 [inline] #0: ffff0001b37f6698 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1523 [inline] #0: ffff0001b37f6698 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1822 [inline] #0: ffff0001b37f6698 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2e0/0x27f0 kernel/sched/core.c:6680 2 locks held by getty/6180: #0: ffff0000d29030a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009ba2b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 1 lock held by udevd/6414: #0: ffff0000ca2464c8 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xd0/0xbd0 block/bdev.c:904 1 lock held by syz-executor210/6431: #0: ffff0000ca2464c8 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_release+0x168/0x644 block/bdev.c:1087 ============================================= final repro crashed as (corrupted=false): INFO: task syz-executor210:6431 blocked for more than 143 seconds. Not tainted 6.13.0-rc3-syzkaller-g573067a5a685 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor210 state:D stack:0 pid:6431 tgid:6429 ppid:6413 flags:0x0000000d Call trace: __switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T) context_switch kernel/sched/core.c:5369 [inline] __schedule+0x1744/0x27f0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6848 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6905 __mutex_lock_common+0xeec/0x28f4 kernel/locking/mutex.c:665 __mutex_lock kernel/locking/mutex.c:735 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:787 bdev_release+0x168/0x644 block/bdev.c:1087 blkdev_release+0x20/0x34 block/fops.c:635 __fput+0x1bc/0x75c fs/file_table.c:450 ____fput+0x20/0x30 fs/file_table.c:478 task_work_run+0x230/0x2e0 kernel/task_work.c:239 get_signal+0x1358/0x1534 kernel/signal.c:2790 do_signal+0x22c/0x39f4 arch/arm64/kernel/signal.c:1663 do_notify_resume+0x74/0x1f4 arch/arm64/kernel/entry-common.c:148 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Showing all locks held in the system: 1 lock held by khungtaskd/31: #0: ffff80008fb82560 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:336 1 lock held by klogd/6022: #0: ffff0001b37f6698 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:598 [inline] #0: ffff0001b37f6698 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1523 [inline] #0: ffff0001b37f6698 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1822 [inline] #0: ffff0001b37f6698 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2e0/0x27f0 kernel/sched/core.c:6680 2 locks held by getty/6180: #0: ffff0000d29030a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff80009ba2b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211 1 lock held by udevd/6414: #0: ffff0000ca2464c8 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xd0/0xbd0 block/bdev.c:904 1 lock held by syz-executor210/6431: #0: ffff0000ca2464c8 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_release+0x168/0x644 block/bdev.c:1087 =============================================