Extracting prog: 4m28.901098883s Minimizing prog: 18m21.376361111s Simplifying prog options: 0s Extracting C: 3m9.841657244s Simplifying C: 49m12.319471231s extracting reproducer from 1 programs testing a last program of every proc 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}}): syz_mount_image$hfs-openat$cgroup_ro detailed listing: executing program 0: syz_mount_image$hfs(&(0x7f0000000180), &(0x7f0000000040)='./file0\x00', 0x0, &(0x7f0000000240)={[{@codepage={'codepage', 0x3d, 'cp862'}}, {@gid}, {@iocharset={'iocharset', 0x3d, 'cp950'}}, {@file_umask={'file_umask', 0x3d, 0x1ff}}, {@file_umask={'file_umask', 0x3d, 0x200}}, {@gid}]}, 0x1, 0x2ce, &(0x7f0000000300)="$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") openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000006ac0)='cpuacct.stat\x00', 0x275a, 0x0) program crashed: INFO: task hung in hfs_mdb_commit single: successfully extracted reproducer found reproducer with 2 syscalls minimizing guilty program testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs detailed listing: executing program 0: syz_mount_image$hfs(&(0x7f0000000180), &(0x7f0000000040)='./file0\x00', 0x0, &(0x7f0000000240)={[{@codepage={'codepage', 0x3d, 'cp862'}}, {@gid}, {@iocharset={'iocharset', 0x3d, 'cp950'}}, {@file_umask={'file_umask', 0x3d, 0x1ff}}, {@file_umask={'file_umask', 0x3d, 0x200}}, {@gid}]}, 0x1, 0x2ce, &(0x7f0000000300)="$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") 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}}): openat$cgroup_ro detailed listing: executing program 0: openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000006ac0)='cpuacct.stat\x00', 0x275a, 0x0) 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_mount_image$hfs-openat$cgroup_ro detailed listing: executing program 0: syz_mount_image$hfs(&(0x7f0000000180), &(0x7f0000000040)='./file0\x00', 0x0, &(0x7f0000000240)={[{@codepage={'codepage', 0x3d, 'cp862'}}, {@gid}, {@iocharset={'iocharset', 0x3d, 'cp950'}}, {@file_umask={'file_umask', 0x3d, 0x1ff}}, {@file_umask={'file_umask', 0x3d, 0x200}}, {@gid}]}, 0x1, 0x2ce, &(0x7f0000000300)="$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") openat$cgroup_ro(0xffffffffffffff9c, 0x0, 0x275a, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro program crashed: INFO: task hung in hfs_mdb_commit simplifying C reproducer testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro program crashed: INFO: task hung in hfs_mdb_commit testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro program crashed: INFO: task hung in hfs_mdb_commit testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro program did not crash testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro program crashed: INFO: task hung in hfs_mdb_commit testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro program crashed: INFO: task hung in hfs_mdb_commit testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro program crashed: INFO: task hung in hfs_mdb_commit testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro program crashed: INFO: task hung in hfs_mdb_commit testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro program crashed: INFO: task hung in hfs_mdb_commit testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro program crashed: INFO: task hung in hfs_mdb_commit testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro program crashed: INFO: task hung in hfs_mdb_commit testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro program crashed: INFO: task hung in hfs_mdb_commit testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro program crashed: INFO: task hung in hfs_mdb_commit testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro program crashed: INFO: task hung in hfs_mdb_commit testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro program crashed: INFO: task hung in hfs_mdb_commit testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro program crashed: INFO: task hung in hfs_mdb_commit testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro program crashed: INFO: task hung in hfs_mdb_commit testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro detailed listing: executing program 0: syz_mount_image$hfs(&(0x7f0000000180), &(0x7f0000000040)='./file0\x00', 0x0, &(0x7f0000000240)={[{@codepage={'codepage', 0x3d, 'cp862'}}, {@gid}, {@iocharset={'iocharset', 0x3d, 'cp950'}}, {@file_umask={'file_umask', 0x3d, 0x1ff}}, {@file_umask={'file_umask', 0x3d, 0x200}}, {@gid}]}, 0x1, 0x2ce, &(0x7f0000000300)="$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") openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000006ac0)='cpuacct.stat\x00', 0x275a, 0x0) program crashed: INFO: task hung in hfs_mdb_commit validation run: crashed=true testing program (duration=6m0s, {Threaded:false 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:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro detailed listing: executing program 0: syz_mount_image$hfs(&(0x7f0000000180), &(0x7f0000000040)='./file0\x00', 0x0, &(0x7f0000000240)={[{@codepage={'codepage', 0x3d, 'cp862'}}, {@gid}, {@iocharset={'iocharset', 0x3d, 'cp950'}}, {@file_umask={'file_umask', 0x3d, 0x1ff}}, {@file_umask={'file_umask', 0x3d, 0x200}}, {@gid}]}, 0x1, 0x2ce, &(0x7f0000000300)="$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") openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000006ac0)='cpuacct.stat\x00', 0x275a, 0x0) program crashed: INFO: task hung in hfs_mdb_commit validation run: crashed=true testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfs-openat$cgroup_ro detailed listing: executing program 0: syz_mount_image$hfs(&(0x7f0000000180), &(0x7f0000000040)='./file0\x00', 0x0, &(0x7f0000000240)={[{@codepage={'codepage', 0x3d, 'cp862'}}, {@gid}, {@iocharset={'iocharset', 0x3d, 'cp950'}}, {@file_umask={'file_umask', 0x3d, 0x1ff}}, {@file_umask={'file_umask', 0x3d, 0x200}}, {@gid}]}, 0x1, 0x2ce, &(0x7f0000000300)="$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") openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000006ac0)='cpuacct.stat\x00', 0x275a, 0x0) program crashed: INFO: task hung in hfs_mdb_commit validation run: crashed=true reproducing took 1h24m38.737501974s repro crashed as (corrupted=false): INFO: task kworker/0:0:7 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack:24112 pid:7 ppid:2 flags:0x00004000 Workqueue: events_long flush_mdb Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562 schedule+0xb9/0x180 kernel/sched/core.c:6638 io_schedule+0x7c/0xd0 kernel/sched/core.c:8798 bit_wait_io+0xd/0xc0 kernel/sched/wait_bit.c:209 __wait_on_bit_lock+0xd8/0x580 kernel/sched/wait_bit.c:90 out_of_line_wait_on_bit_lock+0x138/0x190 kernel/sched/wait_bit.c:117 lock_buffer include/linux/buffer_head.h:397 [inline] hfs_mdb_commit+0x111/0x1100 fs/hfs/mdb.c:271 process_one_work+0x8a2/0x1160 kernel/workqueue.c:2292 worker_thread+0xaa2/0x1270 kernel/workqueue.c:2439 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task syz-executor:4386 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:21200 pid:4386 ppid:1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562 schedule+0xb9/0x180 kernel/sched/core.c:6638 io_schedule+0x7c/0xd0 kernel/sched/core.c:8798 bit_wait_io+0xd/0xc0 kernel/sched/wait_bit.c:209 __wait_on_bit_lock+0xd8/0x580 kernel/sched/wait_bit.c:90 out_of_line_wait_on_bit_lock+0x138/0x190 kernel/sched/wait_bit.c:117 lock_buffer include/linux/buffer_head.h:397 [inline] hfs_mdb_commit+0xad2/0x1100 fs/hfs/mdb.c:325 hfs_sync_fs+0x11/0x20 fs/hfs/super.c:35 sync_filesystem+0xe6/0x220 fs/sync.c:56 generic_shutdown_super+0x6b/0x340 fs/super.c:474 kill_block_super+0x7c/0xe0 fs/super.c:1470 deactivate_locked_super+0x93/0xf0 fs/super.c:332 cleanup_mnt+0x42c/0x4b0 fs/namespace.c:1191 task_work_run+0x1d0/0x260 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fed6ed9da57 RSP: 002b:00007ffc9afd7568 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007fed6ee32048 RCX: 00007fed6ed9da57 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc9afd7620 RBP: 00007ffc9afd7620 R08: 00007ffc9afd8620 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc9afd86b0 R13: 00007fed6ee32048 R14: 0000000000024fcf R15: 00007ffc9afd86f0 Showing all locks held in the system: 2 locks held by kworker/0:0/7: #0: ffff888017471138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc900000c7d00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8cb2df30 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517 1 lock held by rcu_tasks_trace/13: #0: ffffffff8cb2e750 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517 2 locks held by kworker/1:0/22: #0: ffff888017471138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc900001c7d00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 2 locks held by kworker/1:1/26: #0: ffff888017471138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90000a1fd00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 1 lock held by khungtaskd/28: #0: ffffffff8cb2d5a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #0: ffffffff8cb2d5a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #0: ffffffff8cb2d5a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6513 2 locks held by kworker/1:2/128: #0: ffff888017471138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90002dc7d00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 2 locks held by kworker/1:3/3653: #0: ffff888017471138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc900032b7d00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 2 locks held by getty/4029: #0: ffff88814d3d6098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc9000327b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x429/0x1390 drivers/tty/n_tty.c:2198 2 locks held by kworker/1:4/4329: #0: ffff888017471138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc900043a7d00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 2 locks held by kworker/0:3/4333: #0: ffff888017471138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90004387d00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 2 locks held by kworker/0:6/4369: #0: ffff888017471138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc900032c7d00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 1 lock held by syz-executor/4386: #0: ffff88807b9e40e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:362 1 lock held by syz-executor/4436: #0: ffff888026fe40e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:362 1 lock held by syz-executor/4452: #0: ffff88805d4b40e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:362 1 lock held by syz-executor/4467: #0: ffff88802a4540e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:362 1 lock held by syz-executor/4483: #0: ffff88802a44a0e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:362 1 lock held by syz-executor/4509: #0: ffff88805708c0e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:362 1 lock held by syz-executor/4530: #0: ffff888078b2e0e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:362 1 lock held by syz-executor/4552: #0: ffff888075dc80e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:362 1 lock held by syz-executor/4573: #0: ffff888058f0c0e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:362 2 locks held by kworker/1:8/4582: #0: ffff888017471138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc900038f7d00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106 nmi_cpu_backtrace+0x3e6/0x460 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1d4/0x450 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xeee/0xf30 kernel/hung_task.c:377 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 46 Comm: kworker/u4:3 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Workqueue: events_unbound cfg80211_wiphy_work RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:182 [inline] RIP: 0010:write_comp_data kernel/kcov.c:245 [inline] RIP: 0010:__sanitizer_cov_trace_switch+0x5c/0xe0 kernel/kcov.c:349 Code: 41 54 53 48 8b 0c cd 38 25 90 8a 48 8b 54 24 20 65 4c 8b 05 06 f6 7f 7e 45 31 c9 eb 08 49 ff c1 4c 39 c8 74 77 4e 8b 54 ce 10 <65> 44 8b 1d f4 f5 7f 7e 41 81 e3 00 01 ff 00 74 13 41 81 fb 00 01 RSP: 0018:ffffc90000b772d8 EFLAGS: 00000206 RAX: 0000000000000028 RBX: dffffc0000000000 RCX: 0000000000000001 RDX: ffffffff89b31534 RSI: ffffffff8dfafde0 RDI: 0000000000000001 RBP: ffffc90000b77690 R08: ffff88801dae5940 R09: 0000000000000006 R10: 0000000000000006 R11: 0000000000000000 R12: ffff88807d7f209c R13: 0000000000000001 R14: ffff88807d7f207c R15: 000000000000000a FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055a904d63168 CR3: 000000000c88e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: _ieee802_11_parse_elems_full+0x6a4/0x3640 net/mac80211/util.c:1051 ieee802_11_parse_elems_full+0xcdc/0x1220 net/mac80211/util.c:1522 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2265 [inline] ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2272 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1605 [inline] ieee80211_ibss_rx_queued_mgmt+0x3ed/0x2cd0 net/mac80211/ibss.c:1638 ieee80211_iface_process_skb net/mac80211/iface.c:1679 [inline] ieee80211_iface_work+0x726/0xc80 net/mac80211/iface.c:1733 cfg80211_wiphy_work+0x221/0x260 net/wireless/core.c:433 process_one_work+0x8a2/0x1160 kernel/workqueue.c:2292 worker_thread+0xaa2/0x1270 kernel/workqueue.c:2439 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 final repro crashed as (corrupted=false): INFO: task kworker/0:0:7 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack:24112 pid:7 ppid:2 flags:0x00004000 Workqueue: events_long flush_mdb Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562 schedule+0xb9/0x180 kernel/sched/core.c:6638 io_schedule+0x7c/0xd0 kernel/sched/core.c:8798 bit_wait_io+0xd/0xc0 kernel/sched/wait_bit.c:209 __wait_on_bit_lock+0xd8/0x580 kernel/sched/wait_bit.c:90 out_of_line_wait_on_bit_lock+0x138/0x190 kernel/sched/wait_bit.c:117 lock_buffer include/linux/buffer_head.h:397 [inline] hfs_mdb_commit+0x111/0x1100 fs/hfs/mdb.c:271 process_one_work+0x8a2/0x1160 kernel/workqueue.c:2292 worker_thread+0xaa2/0x1270 kernel/workqueue.c:2439 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task syz-executor:4386 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:21200 pid:4386 ppid:1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562 schedule+0xb9/0x180 kernel/sched/core.c:6638 io_schedule+0x7c/0xd0 kernel/sched/core.c:8798 bit_wait_io+0xd/0xc0 kernel/sched/wait_bit.c:209 __wait_on_bit_lock+0xd8/0x580 kernel/sched/wait_bit.c:90 out_of_line_wait_on_bit_lock+0x138/0x190 kernel/sched/wait_bit.c:117 lock_buffer include/linux/buffer_head.h:397 [inline] hfs_mdb_commit+0xad2/0x1100 fs/hfs/mdb.c:325 hfs_sync_fs+0x11/0x20 fs/hfs/super.c:35 sync_filesystem+0xe6/0x220 fs/sync.c:56 generic_shutdown_super+0x6b/0x340 fs/super.c:474 kill_block_super+0x7c/0xe0 fs/super.c:1470 deactivate_locked_super+0x93/0xf0 fs/super.c:332 cleanup_mnt+0x42c/0x4b0 fs/namespace.c:1191 task_work_run+0x1d0/0x260 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fed6ed9da57 RSP: 002b:00007ffc9afd7568 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007fed6ee32048 RCX: 00007fed6ed9da57 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc9afd7620 RBP: 00007ffc9afd7620 R08: 00007ffc9afd8620 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc9afd86b0 R13: 00007fed6ee32048 R14: 0000000000024fcf R15: 00007ffc9afd86f0 Showing all locks held in the system: 2 locks held by kworker/0:0/7: #0: ffff888017471138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc900000c7d00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8cb2df30 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517 1 lock held by rcu_tasks_trace/13: #0: ffffffff8cb2e750 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517 2 locks held by kworker/1:0/22: #0: ffff888017471138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc900001c7d00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 2 locks held by kworker/1:1/26: #0: ffff888017471138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90000a1fd00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 1 lock held by khungtaskd/28: #0: ffffffff8cb2d5a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #0: ffffffff8cb2d5a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #0: ffffffff8cb2d5a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6513 2 locks held by kworker/1:2/128: #0: ffff888017471138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90002dc7d00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 2 locks held by kworker/1:3/3653: #0: ffff888017471138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc900032b7d00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 2 locks held by getty/4029: #0: ffff88814d3d6098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc9000327b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x429/0x1390 drivers/tty/n_tty.c:2198 2 locks held by kworker/1:4/4329: #0: ffff888017471138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc900043a7d00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 2 locks held by kworker/0:3/4333: #0: ffff888017471138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90004387d00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 2 locks held by kworker/0:6/4369: #0: ffff888017471138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc900032c7d00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 1 lock held by syz-executor/4386: #0: ffff88807b9e40e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:362 1 lock held by syz-executor/4436: #0: ffff888026fe40e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:362 1 lock held by syz-executor/4452: #0: ffff88805d4b40e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:362 1 lock held by syz-executor/4467: #0: ffff88802a4540e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:362 1 lock held by syz-executor/4483: #0: ffff88802a44a0e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:362 1 lock held by syz-executor/4509: #0: ffff88805708c0e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:362 1 lock held by syz-executor/4530: #0: ffff888078b2e0e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:362 1 lock held by syz-executor/4552: #0: ffff888075dc80e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:362 1 lock held by syz-executor/4573: #0: ffff888058f0c0e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: deactivate_super+0xa0/0xd0 fs/super.c:362 2 locks held by kworker/1:8/4582: #0: ffff888017471138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc900038f7d00 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106 nmi_cpu_backtrace+0x3e6/0x460 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1d4/0x450 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xeee/0xf30 kernel/hung_task.c:377 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 46 Comm: kworker/u4:3 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Workqueue: events_unbound cfg80211_wiphy_work RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:182 [inline] RIP: 0010:write_comp_data kernel/kcov.c:245 [inline] RIP: 0010:__sanitizer_cov_trace_switch+0x5c/0xe0 kernel/kcov.c:349 Code: 41 54 53 48 8b 0c cd 38 25 90 8a 48 8b 54 24 20 65 4c 8b 05 06 f6 7f 7e 45 31 c9 eb 08 49 ff c1 4c 39 c8 74 77 4e 8b 54 ce 10 <65> 44 8b 1d f4 f5 7f 7e 41 81 e3 00 01 ff 00 74 13 41 81 fb 00 01 RSP: 0018:ffffc90000b772d8 EFLAGS: 00000206 RAX: 0000000000000028 RBX: dffffc0000000000 RCX: 0000000000000001 RDX: ffffffff89b31534 RSI: ffffffff8dfafde0 RDI: 0000000000000001 RBP: ffffc90000b77690 R08: ffff88801dae5940 R09: 0000000000000006 R10: 0000000000000006 R11: 0000000000000000 R12: ffff88807d7f209c R13: 0000000000000001 R14: ffff88807d7f207c R15: 000000000000000a FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055a904d63168 CR3: 000000000c88e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: _ieee802_11_parse_elems_full+0x6a4/0x3640 net/mac80211/util.c:1051 ieee802_11_parse_elems_full+0xcdc/0x1220 net/mac80211/util.c:1522 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2265 [inline] ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2272 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1605 [inline] ieee80211_ibss_rx_queued_mgmt+0x3ed/0x2cd0 net/mac80211/ibss.c:1638 ieee80211_iface_process_skb net/mac80211/iface.c:1679 [inline] ieee80211_iface_work+0x726/0xc80 net/mac80211/iface.c:1733 cfg80211_wiphy_work+0x221/0x260 net/wireless/core.c:433 process_one_work+0x8a2/0x1160 kernel/workqueue.c:2292 worker_thread+0xaa2/0x1270 kernel/workqueue.c:2439 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295