syzbot


INFO: task hung in driver_detach

Status: auto-obsoleted due to no activity on 2024/08/23 16:30
Subsystems: kernel
[Documentation on labels]
First crash: 269d, last: 269d

Sample crash report:
INFO: task syz-executor.3:5257 blocked for more than 143 seconds.
      Not tainted 6.9.0-syzkaller-12255-g0b32d436c015 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:27808 pid:5257  tgid:5236  ppid:5113   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline]
 kobject_uevent_net_broadcast+0x280/0x580 lib/kobject_uevent.c:410
 kobject_uevent_env+0x57d/0x8e0 lib/kobject_uevent.c:593
 device_remove drivers/base/dd.c:566 [inline]
 __device_release_driver drivers/base/dd.c:1270 [inline]
 device_release_driver_internal+0x4ab/0x7c0 drivers/base/dd.c:1293
 driver_detach+0x1fb/0x2d0 drivers/base/dd.c:1356
 bus_remove_driver+0x1f3/0x320 drivers/base/bus.c:742
 usb_gadget_unregister_driver+0x4e/0x70 drivers/usb/gadget/udc/core.c:1733
 raw_release+0xf9/0x1e0 drivers/usb/gadget/legacy/raw_gadget.c:462
 __fput+0x408/0x8b0 fs/file_table.c:422
 __do_sys_close fs/open.c:1555 [inline]
 __se_sys_close fs/open.c:1540 [inline]
 __x64_sys_close+0x7f/0x110 fs/open.c:1540
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa50287bdda
RSP: 002b:00007fa5035c2080 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00007fa5029ac050 RCX: 00007fa50287bdda
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007fa5028c949e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000293 R12: 0000000000000000
R13: 000000000000006e R14: 00007fa5029ac050 R15: 00007ffdf22117b8

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/25 16:20 upstream 0b32d436c015 a10a183e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in driver_detach
* Struck through repros no longer work on HEAD.