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INFO: task can't die in show_free_areas

Status: upstream: reported C repro on 2022/01/24 13:23
Subsystems: serial
[Documentation on labels]
Reported-by: syzbot+8f41dccfb6c03cc36fd6@syzkaller.appspotmail.com
First crash: 1245d, last: 10d
Cause bisection: failed (error log, bisect log)
  
▶ ▼ Discussions (17)
Title Replies (including bot) Last reply
[syzbot] Monthly serial report (Apr 2025) 0 (1) 2025/04/22 10:11
[syzbot] Monthly serial report (Mar 2025) 0 (1) 2025/03/21 00:44
[syzbot] Monthly serial report (Feb 2025) 0 (1) 2025/02/17 12:44
[syzbot] Monthly serial report (Jan 2025) 0 (1) 2025/01/17 10:36
[syzbot] Monthly serial report (Dec 2024) 0 (1) 2024/12/17 09:47
[syzbot] Monthly serial report (Nov 2024) 0 (1) 2024/11/18 10:38
[syzbot] Monthly serial report (Sep 2024) 0 (1) 2024/09/14 10:58
[syzbot] Monthly serial report (Aug 2024) 0 (1) 2024/08/13 12:34
[syzbot] Monthly serial report (Jul 2024) 0 (1) 2024/07/12 10:05
[syzbot] Monthly serial report (Jun 2024) 0 (1) 2024/06/10 12:41
[syzbot] Monthly serial report (May 2024) 0 (1) 2024/05/06 13:18
[syzbot] Monthly serial report (Apr 2024) 0 (1) 2024/04/05 12:46
[syzbot] Monthly serial report (Mar 2024) 0 (1) 2024/03/05 11:10
[syzbot] Monthly serial report (Feb 2024) 1 (2) 2024/02/05 08:09
[syzbot] Monthly serial report (Nov 2023) 0 (1) 2023/11/29 13:03
[syzbot] Monthly serial report (Oct 2023) 0 (1) 2023/10/30 09:14
[syzbot] INFO: task can't die in show_free_areas 0 (2) 2022/02/03 00:14
▶ ▼ Similar bugs (14)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in do_exit syz done error 125 1182d 2204d 0/28 closed as invalid on 2022/02/08 10:54
linux-4.14 INFO: task hung in do_exit syz inconclusive 8 1178d 2193d 0/1 upstream: reported syz repro on 2019/04/25 02:28
linux-4.19 INFO: task hung in do_exit C error 58 810d 2198d 0/1 upstream: reported C repro on 2019/04/19 20:32
linux-6.1 INFO: task hung in do_exit 1 287d 287d 0/3 auto-obsoleted due to no activity on 2024/10/20 05:24
upstream INFO: task can't die in irqentry_exit (2) kernel C error 22 1178d 1595d 0/28 auto-obsoleted due to no activity on 2022/10/23 05:49
upstream INFO: task hung in tty_open serial 1 1299d 1299d 0/28 auto-closed as invalid on 2022/01/02 10:09
linux-4.14 INFO: task hung in tty_open (2) 1 833d 833d 0/1 upstream: reported on 2023/01/13 14:16
upstream INFO: task hung in tty_open (2) serial C error error 19 638d 1174d 0/28 auto-obsoleted due to no activity on 2023/11/04 13:34
android-414 INFO: task hung in do_exit syz 19 1972d 2205d 0/1 public: reported syz repro on 2019/04/13 00:01
android-49 INFO: task hung in do_exit syz 18 2019d 2203d 0/3 public: reported syz repro on 2019/04/14 09:28
android-44 INFO: task hung in tty_open C 132 1988d 2205d 0/2 public: reported C repro on 2019/04/13 00:00
linux-4.14 INFO: task hung in tty_open 2 1740d 1792d 0/1 auto-closed as invalid on 2020/11/17 06:29
android-414 INFO: task hung in tty_open C 152 2185d 2207d 0/1 public: reported C repro on 2019/04/11 00:00
android-49 INFO: task hung in tty_open C 447 1970d 2206d 0/3 public: reported C repro on 2019/04/12 00:00
▶ ▼ Last patch testing requests (8)
Created Duration User Patch Repo Result
2024/10/14 10:57 23m retest repro linux-next OK log
2024/10/14 06:36 23m retest repro upstream log
2024/10/14 05:47 22m retest repro upstream OK log
2024/10/14 05:47 17m retest repro upstream report log
2023/11/18 13:32 23m retest repro linux-next report log
2023/08/31 01:30 2h08m retest repro linux-next report log
2023/06/06 06:38 21m retest repro linux-next error
2022/10/23 06:30 19m retest repro linux-next report log

Sample crash report:
INFO: task syz-executor373:5423 blocked for more than 143 seconds.
      Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor373 state:D stack:26584 pid:5423  tgid:5423  ppid:5107   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
 __schedule_loop kernel/sched/core.c:6813 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6828
 coredump_task_exit kernel/exit.c:439 [inline]
 do_exit+0x56f/0x27e0 kernel/exit.c:832
 do_group_exit+0x207/0x2c0 kernel/exit.c:1027
 get_signal+0x176e/0x1850 kernel/signal.c:2907
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0xc9/0x360 kernel/entry/common.c:212
 do_syscall_64+0x10a/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fccb08345a9
RSP: 002b:00007ffde7c31e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 000000000007bfce RCX: 00007fccb08345a9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fccb08c41cc
RBP: 000000000007c000 R08: 00007fccb07e90b0 R09: 00000004b088a2b9
R10: 00007ffde7c31e30 R11: 0000000000000246 R12: 00007fccb08c41cc
R13: 00007ffde7c31e50 R14: 00007fccb07faa80 R15: 00007ffde7c31e30
 </TASK>
INFO: task syz-executor373:5425 blocked for more than 144 seconds.
      Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor373 state:D stack:24944 pid:5425  tgid:5425  ppid:5101   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
 __schedule_loop kernel/sched/core.c:6813 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6828
 coredump_task_exit kernel/exit.c:439 [inline]
 do_exit+0x56f/0x27e0 kernel/exit.c:832
 do_group_exit+0x207/0x2c0 kernel/exit.c:1027
 get_signal+0x176e/0x1850 kernel/signal.c:2907
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0xc9/0x360 kernel/entry/common.c:212
 do_syscall_64+0x10a/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fccb08345a9
RSP: 002b:00007ffde7c31e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 000000000007bffc RCX: 00007fccb08345a9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fccb08c41cc
RBP: 000000000007c02e R08: 00007fccb07e90b0 R09: 00000004b088a2b9
R10: 00007ffde7c31e30 R11: 0000000000000246 R12: 00007fccb08c41cc
R13: 00007ffde7c31e50 R14: 00007fccb07faa80 R15: 00007ffde7c31e30
 </TASK>
INFO: task syz-executor373:5426 blocked for more than 145 seconds.
      Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor373 state:D stack:26584 pid:5426  tgid:5426  ppid:5108   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
 __schedule_loop kernel/sched/core.c:6813 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6828
 coredump_task_exit kernel/exit.c:439 [inline]
 do_exit+0x56f/0x27e0 kernel/exit.c:832
 do_group_exit+0x207/0x2c0 kernel/exit.c:1027
 get_signal+0x176e/0x1850 kernel/signal.c:2907
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0xc9/0x360 kernel/entry/common.c:212
 do_syscall_64+0x10a/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fccb08345a9
RSP: 002b:00007ffde7c31e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 000000000007c002 RCX: 00007fccb08345a9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fccb08c41cc
RBP: 000000000007c034 R08: 00007fccb07e90b0 R09: 00000004b088a2b9
R10: 00007ffde7c31e30 R11: 0000000000000246 R12: 00007fccb08c41cc
R13: 00007ffde7c31e50 R14: 00007fccb07faa80 R15: 00007ffde7c31e30
 </TASK>
INFO: task syz-executor373:5429 blocked for more than 146 seconds.
      Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor373 state:D stack:26584 pid:5429  tgid:5429  ppid:5103   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
 __schedule_loop kernel/sched/core.c:6813 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6828
 coredump_task_exit kernel/exit.c:439 [inline]
 do_exit+0x56f/0x27e0 kernel/exit.c:832
 do_group_exit+0x207/0x2c0 kernel/exit.c:1027
 get_signal+0x176e/0x1850 kernel/signal.c:2907
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0xc9/0x360 kernel/entry/common.c:212
 do_syscall_64+0x10a/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fccb08345a9
RSP: 002b:00007ffde7c31e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 000000000007c065 RCX: 00007fccb08345a9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fccb08c41cc
RBP: 000000000007c097 R08: 00007fccb07e90b0 R09: 00000004b088a2b9
R10: 00007ffde7c31e30 R11: 0000000000000246 R12: 00007fccb08c41cc
R13: 00007ffde7c31e50 R14: 00007fccb07faa80 R15: 00007ffde7c31e30
 </TASK>
INFO: task syz-executor373:5430 blocked for more than 147 seconds.
      Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor373 state:D stack:26584 pid:5430  tgid:5430  ppid:5104   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
 __schedule_loop kernel/sched/core.c:6813 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6828
 coredump_task_exit kernel/exit.c:439 [inline]
 do_exit+0x56f/0x27e0 kernel/exit.c:832
 do_group_exit+0x207/0x2c0 kernel/exit.c:1027
 get_signal+0x176e/0x1850 kernel/signal.c:2907
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0xc9/0x360 kernel/entry/common.c:212
 do_syscall_64+0x10a/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fccb08345a9
RSP: 002b:00007ffde7c31e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 0000000000000004 RCX: 00007fccb08345a9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fccb08c41c8
RBP: 00007fccb08c41c0 R08: 00000003b088a2b9 R09: 00000004b088a2b9
R10: 00007fccb07e90b0 R11: 0000000000000246 R12: 00007fccb08c41cc
R13: 00007ffde7c31e50 R14: 00007fccb07faa80 R15: 00007ffde7c31ec0
 </TASK>
INFO: task syz-executor373:5433 blocked for more than 149 seconds.
      Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor373 state:D stack:26264 pid:5433  tgid:5433  ppid:5105   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
 __schedule_loop kernel/sched/core.c:6813 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6828
 coredump_task_exit kernel/exit.c:439 [inline]
 do_exit+0x56f/0x27e0 kernel/exit.c:832
 do_group_exit+0x207/0x2c0 kernel/exit.c:1027
 get_signal+0x176e/0x1850 kernel/signal.c:2907
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0xc9/0x360 kernel/entry/common.c:212
 do_syscall_64+0x10a/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fccb08345a9
RSP: 002b:00007ffde7c31e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 000000000007c1e6 RCX: 00007fccb08345a9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fccb08c41cc
RBP: 000000000007c218 R08: 00007fccb07e90b0 R09: 00000004b088a2b9
R10: 00007ffde7c31e30 R11: 0000000000000246 R12: 00007fccb08c41cc
R13: 00007ffde7c31e50 R14: 00007fccb07faa80 R15: 00007ffde7c31e30
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
 #0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
 #0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u8:8/2818:
2 locks held by getty/4823:
 #0: ffff88802a7f70a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by syz-executor373/5424:
4 locks held by syz-executor373/5428:
3 locks held by syz-executor373/5427:
4 locks held by syz-executor373/5432:
3 locks held by syz-executor373/5431:
3 locks held by syz-executor373/5434:

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

NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xfb0/0xff0 kernel/hung_task.c:379
 kthread+0x2f2/0x390 kernel/kthread.c:388
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5427 Comm: syz-executor373 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4801 [inline]
RIP: 0010:__lock_acquire+0x928/0x1fd0 kernel/locking/lockdep.c:5087
Code: 00 fc ff df 90 0f 0b 90 90 90 31 db 48 8d ab c4 00 00 00 48 89 e8 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 91 00 00 00 0f b6 6d 00 <40> 84 ed 74 32 0f b6 44 24 28 40 0f b6 cd 40 38 e8 0f 42 c8 89 4c
RSP: 0018:ffffc90005106530 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffffff92a09750 RCX: ffffffff8171a85e
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff92ce5598
RBP: 0000000000000000 R08: ffffffff92ce559f R09: 1ffffffff259cab3
R10: dffffc0000000000 R11: fffffbfff259cab4 R12: 0000000000000000
R13: ffff888022af46f8 R14: 0000000000000000 R15: ffff888022af46f8
FS:  00007fccb07e86c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f0df1bebe7 CR3: 000000006298a000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 lock_acquire+0x1e4/0x530 kernel/locking/lockdep.c:5754
 local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
 folio_add_lru+0x370/0xd70 mm/swap.c:515
 filemap_add_folio+0x228/0x570 mm/filemap.c:962
 page_cache_ra_unbounded+0x211/0x7c0 mm/readahead.c:250
 do_sync_mmap_readahead+0x444/0x850
 filemap_fault+0x7c6/0x1680 mm/filemap.c:3245
 __do_fault+0x137/0x460 mm/memory.c:4396
 do_read_fault mm/memory.c:4758 [inline]
 do_fault mm/memory.c:4888 [inline]
 do_pte_missing mm/memory.c:3745 [inline]
 handle_pte_fault mm/memory.c:5164 [inline]
 __handle_mm_fault+0x49e6/0x72d0 mm/memory.c:5305
 handle_mm_fault+0x3c2/0x8a0 mm/memory.c:5470
 faultin_page mm/gup.c:958 [inline]
 __get_user_pages+0x6be/0x1600 mm/gup.c:1241
 __get_user_pages_locked mm/gup.c:1509 [inline]
 get_dump_page+0x155/0x2f0 mm/gup.c:2031
 dump_user_range+0x14c/0x950 fs/coredump.c:949
 elf_core_dump+0x3d5e/0x4630 fs/binfmt_elf.c:2077
 do_coredump+0x1bad/0x2b50 fs/coredump.c:764
 get_signal+0x146b/0x1850 kernel/signal.c:2893
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x79/0x270 kernel/entry/common.c:225
 exc_page_fault+0x585/0x890 arch/x86/mm/fault.c:1566
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fccb07fabf0
Code: 48 00 00 20 6c 62 30 00 e8 bd 99 03 00 48 83 f8 ff 0f 84 43 ff ff ff 48 89 05 34 15 0c 00 e9 37 ff ff ff 0f 1f 80 00 00 00 00 <4c> 89 34 25 00 00 00 20 45 31 c9 45 31 c0 31 c9 ba 00 00 00 20 31
RSP: 002b:00007fccb07e8220 EFLAGS: 00010217
RAX: 00007fccb07fabf0 RBX: 00007fccb08c41c8 RCX: 00007fccb08345a9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fccb08c41c8
RBP: 00007fccb08c41c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fccb088a6bc
R13: 6c756e2f7665642f R14: 0030656c69662f2e R15: 4c2e303030325039
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 3.519 msecs

Crashes (186):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/01 05:30 upstream fe46a7dd189e 6baf5069 .config console log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in do_exit
2024/03/07 02:46 upstream 5847c9777c30 f39a7eed .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in do_exit
2022/02/03 00:14 linux-next 6abab1b81b65 4ebb2798 .config console log report syz C ci-upstream-linux-next-kasan-gce-root INFO: task can't die in show_free_areas
2022/02/04 05:59 linux-next ef6b35306dd8 30646bfe .config console log report info ci-upstream-linux-next-kasan-gce-root INFO: task can't die in show_free_areas
2022/01/24 13:23 linux-next 74e5dee6a5b9 214351e1 .config console log report info ci-upstream-linux-next-kasan-gce-root INFO: task can't die in show_free_areas
2021/11/27 05:04 linux-next f81e94e91878 63eeac02 .config console log report info ci-upstream-linux-next-kasan-gce-root INFO: task can't die in show_free_areas
2025/04/15 09:46 upstream 834a4a689699 23b969b7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in tty_open
2025/04/03 19:40 upstream a2cc6ff5ec8f d7ae3a11 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in tty_open
2025/03/27 11:44 upstream 1e1ba8d23dae 20510e88 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in tty_open
2025/03/26 07:14 upstream 2df0c02dab82 89d30d73 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in tty_open
2025/03/17 09:36 upstream 4701f33a1070 948c34e4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in tty_open
2025/03/17 07:15 upstream 4701f33a1070 948c34e4 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto INFO: task hung in tty_open
2025/03/12 00:01 upstream 0b46b049d6ec f2eee6b3 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto INFO: task hung in tty_open
2025/03/10 16:28 upstream 80e54e84911a 16256247 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in tty_open
2025/03/01 06:02 upstream 276f98efb64a 67cf5345 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto INFO: task hung in tty_open
2025/02/15 10:04 upstream 04f41cbf03ec 40a34ec9 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto INFO: task hung in tty_open
2025/02/11 14:26 upstream febbc555cf0f f2baddf5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in tty_open
2025/02/05 22:28 upstream 92514ef226f5 577d049b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in tty_open
2025/01/25 00:22 upstream 0afd22092df4 9fbd772e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in tty_open
2025/01/20 10:35 upstream ffd294d346d1 f2cb035c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in tty_open
2024/12/21 15:36 upstream 499551201b5f d7f584ee .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto INFO: task hung in do_exit
2024/12/11 02:28 upstream 7cb1b4663150 cfc402b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in do_exit
2024/12/05 21:57 upstream 5076001689e4 6e50d07b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in tty_open
2024/10/16 22:26 upstream c964ced77262 666f77ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in tty_open
2024/09/21 21:55 upstream a430d95c5efa 6f888b75 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in do_exit
2024/09/18 11:28 upstream a430d95c5efa c673ca06 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto INFO: task hung in do_exit
2024/09/17 17:51 upstream a430d95c5efa c673ca06 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto INFO: task hung in do_exit
2024/09/17 13:39 upstream a430d95c5efa c673ca06 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto INFO: task hung in do_exit
2024/09/17 07:10 upstream a430d95c5efa c673ca06 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto INFO: task hung in do_exit
2024/08/31 06:59 upstream 1934261d8974 1eda0d14 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in tty_open
2024/08/28 22:37 upstream 86987d84b968 940f38c1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in do_exit
2024/08/20 22:14 upstream 6e4436539ae1 9f0ab3fb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in do_exit
2024/08/20 15:54 upstream 6e4436539ae1 9f0ab3fb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in do_exit
2024/08/19 08:36 upstream 47ac09b91bef dbc93b08 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in do_exit
2024/08/19 02:28 upstream c3f2d783a459 dbc93b08 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in tty_open
2024/08/17 19:46 upstream e5fa841af679 dbc93b08 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in do_exit
2024/08/15 09:04 upstream 6b0f8db921ab e4bacdaf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in do_exit
2024/08/15 01:59 upstream 6b0f8db921ab e4bacdaf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in do_exit
2024/08/13 08:44 upstream d74da846046a 7b0f4b46 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in do_exit
2024/08/12 15:41 upstream 7c626ce4bae1 6f4edef4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in do_exit
2024/08/11 17:46 upstream 5189dafa4cf9 6f4edef4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in do_exit
2024/08/11 12:52 upstream 5189dafa4cf9 6f4edef4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in do_exit
2024/08/03 01:47 upstream 948752d2e010 53683cf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in do_exit
2024/07/29 13:25 upstream dc1c8034e31b 5187fc86 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in do_exit
2024/07/29 07:42 upstream dc1c8034e31b 46eb10b7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in do_exit
2024/06/11 08:18 upstream 83a7eefedc9b b7d9eb04 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in do_exit
2024/03/11 04:21 upstream 137e0ec05aeb 6ee49f2e .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-selinux-root INFO: task hung in do_exit
2024/09/03 18:37 upstream 67784a74e258 512328ba .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in do_exit
2024/08/24 00:41 upstream 3d5f968a177d d7d32352 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in do_exit
2024/08/13 02:04 upstream d74da846046a 7b0f4b46 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in do_exit
2024/07/30 06:42 upstream 94ede2a3e913 5187fc86 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in do_exit
2024/10/20 18:23 linux-next 15e7d45e786a cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in tty_open
2024/09/30 05:46 linux-next cea5425829f7 ba29ff75 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in tty_open
2024/08/02 23:26 linux-next 931a3b3bccc9 53683cf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in do_exit
2025/01/14 01:16 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes 6f6ecce59d99 b1f1cd88 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 INFO: task hung in do_exit
2025/01/11 06:37 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes 6f6ecce59d99 6dbc6a9b .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 INFO: task hung in do_exit
2025/01/03 02:18 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes 21f1b85c8912 d3ccff63 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 INFO: task hung in do_exit
2024/12/20 07:04 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes 21f1b85c8912 0f61b415 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 INFO: task hung in do_exit
2024/12/16 20:31 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes 21f1b85c8912 eec85da6 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 INFO: task hung in do_exit
2024/12/12 21:39 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes 21f1b85c8912 1b70f4d9 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 INFO: task hung in do_exit
2024/12/08 11:46 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes 57f7c7dc78cd 9ac0fdc6 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 INFO: task hung in do_exit
2024/11/04 23:02 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes 5f153a692bac 7bfecfb9 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 INFO: task hung in do_exit
2024/11/03 08:04 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes 5f153a692bac f00eed24 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 INFO: task hung in do_exit
* Struck through repros no longer work on HEAD.