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INFO: task hung in usbdev_ioctl (2)

Status: premoderation: reported syz repro on 2026/07/11 15:35
Reported-by: syzbot+829fa6062f8d31a5b58f@syzkaller.appspotmail.com
First crash: 8d17h, last: 7d00h
▶ ▼ Similar bugs (9)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in usbdev_ioctl (6) usb 1 1 630d 630d 0/29 auto-obsoleted due to no activity on 2025/01/26 07:16
linux-6.1 INFO: task hung in usbdev_ioctl 1 1 839d 839d 0/3 auto-obsoleted due to no activity on 2024/07/10 11:29
upstream INFO: task hung in usbdev_ioctl (5) usb 1 4 819d 864d 0/29 auto-obsoleted due to no activity on 2024/07/21 02:28
upstream INFO: task hung in usbdev_ioctl (4) usb 1 1 1121d 1121d 0/29 auto-obsoleted due to no activity on 2023/09/22 21:55
android-6-12 INFO: task hung in usbdev_ioctl 1 1 305d 305d 0/1 auto-obsoleted due to no activity on 2025/12/16 11:45
upstream INFO: task hung in usbdev_ioctl (7) usb 1 11 193d 508d 0/29 auto-obsoleted due to no activity on 2026/04/07 22:15
upstream INFO: task hung in usbdev_ioctl (2) usb 1 1 1611d 1611d 0/29 auto-closed as invalid on 2022/05/21 06:20
upstream INFO: task hung in usbdev_ioctl (3) usb 1 4 1240d 1400d 0/29 auto-obsoleted due to no activity on 2023/05/26 15:30
upstream INFO: task hung in usbdev_ioctl usb 1 3 1697d 1703d 0/29 closed as invalid on 2022/02/08 09:40

Sample crash report:
INFO: task syz.4.18:402 blocked for more than 122 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.18        state:D stack:0     pid:402   tgid:401   ppid:384    flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6054 [inline]
 __schedule+0x1496/0x20b0 kernel/sched/core.c:7867
 __schedule_loop kernel/sched/core.c:7944 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7959
 schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:8016
 __mutex_lock_common kernel/locking/mutex.c:707 [inline]
 __mutex_lock+0x902/0x1b90 kernel/locking/mutex.c:806
 __mutex_lock_slowpath+0xe/0x20 kernel/locking/mutex.c:1136
 mutex_lock+0x113/0x1d0 kernel/locking/mutex.c:285
 device_lock include/linux/device.h:911 [inline]
 usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline]
 usbdev_ioctl+0x13e/0x2120 drivers/usb/core/devio.c:2824
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0x135/0x1b0 fs/ioctl.c:893
 __x64_sys_ioctl+0x7f/0xa0 fs/ioctl.c:893
 x64_sys_call+0x1878/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f30b879de59
RSP: 002b:00007f30b95bf028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f30b8a25fa0 RCX: 00007f30b879de59
RDX: 0000000000000000 RSI: 000000008008551c RDI: 0000000000000004
RBP: 00007f30b8833e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f30b8a26038 R14: 00007f30b8a25fa0 R15: 00007fffa98c7b68
 </TASK>
INFO: task syz.2.19:405 blocked for more than 123 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.19        state:D stack:0     pid:405   tgid:404   ppid:387    flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6054 [inline]
 __schedule+0x1496/0x20b0 kernel/sched/core.c:7867
 __schedule_loop kernel/sched/core.c:7944 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7959
 schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:8016
 __mutex_lock_common kernel/locking/mutex.c:707 [inline]
 __mutex_lock+0x902/0x1b90 kernel/locking/mutex.c:806
 __mutex_lock_slowpath+0xe/0x20 kernel/locking/mutex.c:1136
 mutex_lock+0x113/0x1d0 kernel/locking/mutex.c:285
 device_lock include/linux/device.h:911 [inline]
 usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline]
 usbdev_ioctl+0x13e/0x2120 drivers/usb/core/devio.c:2824
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0x135/0x1b0 fs/ioctl.c:893
 __x64_sys_ioctl+0x7f/0xa0 fs/ioctl.c:893
 x64_sys_call+0x1878/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f84a539de59
RSP: 002b:00007f84a51ff028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f84a5625fa0 RCX: 00007f84a539de59
RDX: 0000000000000000 RSI: 000000008008551c RDI: 0000000000000004
RBP: 00007f84a5433e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f84a5626038 R14: 00007f84a5625fa0 R15: 00007ffe54e14bc8
 </TASK>
INFO: task syz.0.17:409 blocked for more than 123 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.17        state:D stack:0     pid:409   tgid:406   ppid:383    flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6054 [inline]
 __schedule+0x1496/0x20b0 kernel/sched/core.c:7867
 __schedule_loop kernel/sched/core.c:7944 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7959
 schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:8016
 __mutex_lock_common kernel/locking/mutex.c:707 [inline]
 __mutex_lock+0x902/0x1b90 kernel/locking/mutex.c:806
 __mutex_lock_slowpath+0xe/0x20 kernel/locking/mutex.c:1136
 mutex_lock+0x113/0x1d0 kernel/locking/mutex.c:285
 device_lock include/linux/device.h:911 [inline]
 usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline]
 usbdev_ioctl+0x13e/0x2120 drivers/usb/core/devio.c:2824
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0x135/0x1b0 fs/ioctl.c:893
 __x64_sys_ioctl+0x7f/0xa0 fs/ioctl.c:893
 x64_sys_call+0x1878/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f77a379de59
RSP: 002b:00007f77a4582028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f77a3a25fa0 RCX: 00007f77a379de59
RDX: 0000000000000000 RSI: 000000008008551c RDI: 0000000000000004
RBP: 00007f77a3833e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f77a3a26038 R14: 00007f77a3a25fa0 R15: 00007ffc5e21ab08
 </TASK>
INFO: task syz.3.20:408 blocked for more than 123 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.20        state:D stack:0     pid:408   tgid:407   ppid:388    flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6054 [inline]
 __schedule+0x1496/0x20b0 kernel/sched/core.c:7867
 __schedule_loop kernel/sched/core.c:7944 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7959
 schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:8016
 __mutex_lock_common kernel/locking/mutex.c:707 [inline]
 __mutex_lock+0x902/0x1b90 kernel/locking/mutex.c:806
 __mutex_lock_slowpath+0xe/0x20 kernel/locking/mutex.c:1136
 mutex_lock+0x113/0x1d0 kernel/locking/mutex.c:285
 device_lock include/linux/device.h:911 [inline]
 usbdev_do_ioctl drivers/usb/core/devio.c:2608 [inline]
 usbdev_ioctl+0x13e/0x2120 drivers/usb/core/devio.c:2824
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0x135/0x1b0 fs/ioctl.c:893
 __x64_sys_ioctl+0x7f/0xa0 fs/ioctl.c:893
 x64_sys_call+0x1878/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f7d1a59de59
RSP: 002b:00007f7d1b513028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7d1a825fa0 RCX: 00007f7d1a59de59
RDX: 0000000000000000 RSI: 000000008008551c RDI: 0000000000000004
RBP: 00007f7d1a633e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7d1a826038 R14: 00007f7d1a825fa0 R15: 00007ffea9802908
 </TASK>
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 7d836c68f7d55d9b8be32a3afed0c3f02dc2df9e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
 dump_stack+0x19/0x20 lib/dump_stack.c:129
 nmi_cpu_backtrace+0x2ba/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x142/0x2c0 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:41
 trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:267 [inline]
 watchdog+0xe45/0xf90 kernel/hung_task.c:423
 kthread+0x2c7/0x360 kernel/kthread.c:389
 ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 7d836c68f7d55d9b8be32a3afed0c3f02dc2df9e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:36 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:230 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:149 [inline]
RIP: 0010:wrmsr arch/x86/include/asm/msr.h:256 [inline]
RIP: 0010:native_apic_msr_write+0x42/0x60 arch/x86/include/asm/apic.h:212
Code: 75 17 5d c3 cc cc cc cc cc 81 ff d0 00 00 00 74 f1 81 ff e0 00 00 00 74 e9 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 eb d4 89 f6 31 d2 e8 f1 be a3 01 5d c3 cc cc cc cc cc 66 2e
RSP: 0018:ffffc90000230df8 EFLAGS: 00000046
RAX: 0000000001443988 RBX: ffff8881f6f28380 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 0000000001443988 RDI: 0000000000000838
RBP: ffffc90000230df8 R08: ffff888103668000 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff81425f90 R12: 0000000000000020
R13: dffffc0000000000 R14: 0000000010004d2c R15: 0000000001443988
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557cf3b4e8 CR3: 0000000122130000 CR4: 00000000003526b0
Call Trace:
 <IRQ>
 apic_write arch/x86/include/asm/apic.h:405 [inline]
 lapic_next_event+0x15/0x20 arch/x86/kernel/apic/apic.c:415
 clockevents_program_event+0x1e0/0x350 kernel/time/clockevents.c:334
 tick_program_event+0x9b/0x120 kernel/time/tick-oneshot.c:44
 hrtimer_interrupt+0xa8b/0xf30 kernel/time/hrtimer.c:1892
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x8b/0x2a0 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x7d/0x90 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:116
Code: cc cc cc cc cc cc cc b8 f2 34 1d 6a 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 23 c9 43 00 55 48 89 e5 fb f4 <5d> c3 cc cc cc cc cc cc cc cc cc cc cc b8 00 00 00 00 90 90 90 90
RSP: 0018:ffffc900001a7e00 EFLAGS: 000002c2
RAX: ffff8881f6f00000 RBX: ffff888103668000 RCX: ffffffff85a394fd
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000dc9934
RBP: ffffc900001a7e00 R08: ffff8881f6f395eb R09: 1ffff1103ede72bd
R10: dffffc0000000000 R11: ffffed103ede72be R12: 0000000000000000
R13: 1ffff110206cd000 R14: dffffc0000000000 R15: ffffffff87ecafe8
 arch_safe_halt arch/x86/include/asm/paravirt.h:-1 [inline]
 default_idle+0x17/0x30 arch/x86/kernel/process.c:754
 arch_cpu_idle+0xd/0x20 arch/x86/kernel/process.c:791
 default_idle_call+0x3e/0x80 kernel/sched/idle.c:117
 cpuidle_idle_call kernel/sched/idle.c:193 [inline]
 do_idle+0x1df/0x570 kernel/sched/idle.c:346
 cpu_startup_entry+0x47/0x60 kernel/sched/idle.c:445
 start_secondary+0x12e/0x140 arch/x86/kernel/smpboot.c:314
 common_startup_64+0x13b/0x157
 </TASK>

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/07/13 08:30 android16-6.12 0026e4ecedf0 d78ea535 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust INFO: task hung in usbdev_ioctl
2026/07/12 23:51 android16-6.12 0026e4ecedf0 d78ea535 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust INFO: task hung in usbdev_ioctl
2026/07/12 00:56 android16-6.12 0026e4ecedf0 d78ea535 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust INFO: task hung in usbdev_ioctl
2026/07/11 15:34 android16-6.12 0026e4ecedf0 d78ea535 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust INFO: task hung in usbdev_ioctl
* Struck through repros no longer work on HEAD.