syzbot


INFO: task hung in evdev_release (2)

Status: auto-obsoleted due to no activity on 2024/10/21 13:41
Subsystems: input
[Documentation on labels]
First crash: 210d, last: 210d
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in evdev_release (3) input 1 101d 101d 0/28 auto-obsoleted due to no activity on 2025/02/07 01:16
android-414 INFO: task hung in evdev_release 1 2118d 2118d 0/1 auto-closed as invalid on 2019/10/25 08:43
upstream INFO: task hung in evdev_release input syz done error 14 883d 2317d 0/28 auto-obsoleted due to no activity on 2023/01/16 18:18

Sample crash report:
INFO: task syz.3.733:7123 blocked for more than 143 seconds.
      Not tainted 6.10.0-syzkaller-g933069701c1b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.733       state:D
 stack:27632 pid:7123  tgid:7122  ppid:2474   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0xcda/0x2f80 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6621
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
 evdev_release+0x7d/0x400 drivers/input/evdev.c:432
 __fput+0x408/0xbb0 fs/file_table.c:422
 task_work_run+0x14e/0x250 kernel/task_work.c:222
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0xaa3/0x2b30 kernel/exit.c:882
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1031
 get_signal+0x25fd/0x2770 kernel/signal.c:2917
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x147/0x260 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f28c8185f19
RSP: 002b:00007f28c6e070f8 EFLAGS: 00000246
 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f28c8315f68 RCX: 00007f28c8185f19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f28c8315f68
RBP: 00007f28c8315f60 R08: 00007f28c6e076c0 R09: 00007f28c6e076c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f28c8315f6c
R13: 0000000000000006 R14: 00007ffe6bfead50 R15: 00007ffe6bfeae38
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: 
ffffffff884b67a0
 (
rcu_read_lock
){....}-{1:2}
, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6620
6 locks held by kworker/1:2/727:
5 locks held by kworker/u8:8/1183:
 #0: 
ffff888100aab148
 (
(wq_completion)netns
){+.+.}-{0:0}
, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206
 #1: 
ffffc9000206fd80
 (
net_cleanup_work
){+.+.}-{0:0}
, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207
 #2: 
ffffffff8960cc90
 (
pernet_ops_rwsem
){++++}-{3:3}
, at: cleanup_net+0xbb/0xbf0 net/core/net_namespace.c:594
 #3: 
ffffffff896223a8
 (
rtnl_mutex
){+.+.}-{3:3}
, at: default_device_exit_batch+0x8c/0xae0 net/core/dev.c:11874
 #4: 
ffffffff884c1f38
 (
rcu_state.exp_mutex
){+.+.}-{3:3}
, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:296
2 locks held by syslogd/2347:
2 locks held by getty/2423:
 #0: 
ffff8881139790a0
 (
&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: 
ffffc900000432f0
 (
&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/2457:
1 lock held by syz-executor/4751:
2 locks held by syz.4.730/7116:
1 lock held by syz.3.733/7123:
 #0: 
ffff88810a7f2110
 (
&evdev->mutex
){+.+.}-{3:3}
, at: evdev_release+0x7d/0x400 drivers/input/evdev.c:432
9 locks held by v4l_id/7136:

=============================================

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-syzkaller-g933069701c1b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:93 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xf4e/0x1280 kernel/hung_task.c:379
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
gspca_pac7302 4-1:0.0: URB error -71, resubmitting
gspca_pac7302 5-1:0.0: URB error -71, resubmitting
gspca_pac7302 4-1:0.0: URB error -71, resubmitting
gspca_pac7302 5-1:0.0: URB error -71, resubmitting
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 7137 Comm: syz-executor Not tainted 6.10.0-syzkaller-g933069701c1b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:io_serial_out+0x8f/0xb0 drivers/tty/serial/8250/8250_port.c:413
gspca_pac7302 4-1:0.0: URB error -71, resubmitting
Code: 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 1c 66 03 5d 40 44 89 e8 89 da ee <5b> 5d 41 5c 41 5d c3 cc cc cc cc e8 51 05 12 ff eb a0 e8 da 05 12
RSP: 0018:ffffc900001b8738 EFLAGS: 00000002
RAX: 0000000000000034 RBX: 00000000000003f8 RCX: 0000000000000000
RDX: 00000000000003f8 RSI: ffffffff82964c15 RDI: ffffffff8d4f02c0
RBP: ffffffff8d4f0280 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000034 R14: ffffffff82964bb0 R15: 0000000000000000
FS:  00005555659b6500(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020614000 CR3: 0000000112d8c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 serial_out drivers/tty/serial/8250/8250.h:142 [inline]
 serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3322 [inline]
 serial8250_console_write+0xce7/0x1090 drivers/tty/serial/8250/8250_port.c:3393
 console_emit_next_record kernel/printk/printk.c:2983 [inline]
 console_flush_all+0x53c/0xd70 kernel/printk/printk.c:3049
 console_unlock+0xae/0x290 kernel/printk/printk.c:3118
 vprintk_emit kernel/printk/printk.c:2348 [inline]
 vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2303
 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:45
 _printk+0xc8/0x100 kernel/printk/printk.c:2373
 int_irq+0x1b7/0x270 drivers/media/usb/gspca/gspca.c:104
 __usb_hcd_giveback_urb+0x466/0x6e0 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
 dummy_timer+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1987
 __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
 __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x8b/0xb0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:write_comp_data+0x0/0x90 kernel/kcov.c:230
Code: 48 8b 05 83 72 b0 7e 48 8b 80 48 15 00 00 c3 cc cc cc cc 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <49> 89 d2 49 89 f8 49 89 f1 65 48 8b 15 4f 72 b0 7e 65 8b 05 50 72
RSP: 0018:ffffc90003b174f8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffffc90003b175d8 RCX: ffffffff8115642d
RDX: 0000000000000002 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000000 R12: ffffffff89ef0c08
R13: ffffffff89ef0c0d R14: 0000000000000002 R15: ffffc90003b1760d
 unwind_next_frame+0x60d/0x23a0 arch/x86/kernel/unwind_orc.c:508
 __unwind_start+0x5aa/0x880 arch/x86/kernel/unwind_orc.c:760
 unwind_start arch/x86/include/asm/unwind.h:64 [inline]
 arch_stack_walk+0xb2/0x170 arch/x86/kernel/stacktrace.c:24
 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
 save_stack+0x162/0x1f0 mm/page_owner.c:156
 __set_page_owner+0x8b/0x560 mm/page_owner.c:320
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1493
 prep_new_page mm/page_alloc.c:1501 [inline]
 get_page_from_freelist+0x1311/0x25f0 mm/page_alloc.c:3438
 __alloc_pages_noprof+0x21e/0x2290 mm/page_alloc.c:4696
 alloc_pages_mpol_noprof+0xeb/0x400 mm/mempolicy.c:2263
 vm_area_alloc_pages mm/vmalloc.c:3584 [inline]
 __vmalloc_area_node mm/vmalloc.c:3660 [inline]
 __vmalloc_node_range_noprof+0xa6a/0x1520 mm/vmalloc.c:3841
 vmalloc_user_noprof+0x6b/0x90 mm/vmalloc.c:3995
 kcov_ioctl+0x4f/0x730 kernel/kcov.c:706
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl fs/ioctl.c:893 [inline]
 __x64_sys_ioctl+0x193/0x220 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8d4fac5b1b
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007ffcd0505b10 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000040000 RCX: 00007f8d4fac5b1b
RDX: 0000000000040000 RSI: ffffffff80086301 RDI: 00000000000000d8
RBP: 00007f8d4fc55ff8 R08: 0000000000000000 R09: 00007ffcd0505e38
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000009
 </TASK>
gspca_pac7302 5-1:0.0: URB error -71, resubmitting

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/07/23 13:41 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 933069701c1b e50e8da5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in evdev_release
* Struck through repros no longer work on HEAD.