INFO: task syz.3.586:7503 blocked for more than 143 seconds.
Not tainted 6.11.0-rc6-syzkaller-01155-gf723224742fc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.586 state:D stack:23872 pid:7503 tgid:7503 ppid:6839 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 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+0x6a4/0xd70 kernel/locking/mutex.c:752
pipe_release+0x4e/0x330 fs/pipe.c:727
__fput+0x24a/0x8a0 fs/file_table.c:422
task_work_run+0x24f/0x310 kernel/task_work.c:228
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [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+0x168/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd5a237cef9
RSP: 002b:00007fff0125a4c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fd5a2537a80 RCX: 00007fd5a237cef9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fd5a2537a80 R08: 0000000000000006 R09: 00007fff0125a7bf
R10: 00000000003ffd0c R11: 0000000000000246 R12: 0000000000027945
R13: 00007fff0125a5d0 R14: 0000000000000032 R15: ffffffffffffffff
INFO: task syz.3.586:7508 blocked for more than 145 seconds.
Not tainted 6.11.0-rc6-syzkaller-01155-gf723224742fc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.586 state:D stack:27360 pid:7508 tgid:7503 ppid:6839 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 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+0x6a4/0xd70 kernel/locking/mutex.c:752
pipe_write+0x1c9/0x1a40 fs/pipe.c:455
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa72/0xc90 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
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: 0033:0x7fd5a237cef9
RSP: 002b:00007fd5a31d9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fd5a2536058 RCX: 00007fd5a237cef9
RDX: 0000000000000004 RSI: 0000000020000240 RDI: 0000000000000009
RBP: 00007fd5a23ef046 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fd5a2536058 R15: 00007fff0125a368
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e938320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e938320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e938320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
2 locks held by syslogd/4667:
2 locks held by klogd/4674:
2 locks held by getty/4988:
#0: ffff888030b260a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz.3.586/7503:
#0: ffff888031c34c68 (&pipe->mutex){+.+.}-{3:3}, at: pipe_release+0x4e/0x330 fs/pipe.c:727
1 lock held by syz.3.586/7504:
#0: ffff888031c34c68 (&pipe->mutex){+.+.}-{3:3}, at: splice_file_to_pipe+0x2e/0x500 fs/splice.c:1292
1 lock held by syz.3.586/7508:
#0: ffff888031c34c68 (&pipe->mutex){+.+.}-{3:3}, at: pipe_write+0x1c9/0x1a40 fs/pipe.c:455
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc6-syzkaller-01155-gf723224742fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 7574 Comm: syz.1.603 Not tainted 6.11.0-rc6-syzkaller-01155-gf723224742fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:check_preemption_disabled+0x2e/0x120
Code: 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 65 8b 1d dc 3c 49 74 65 8b 05 d1 3c 49 74 a9 ff ff ff 7f 74 26 <65> 48 8b 04 25 28 00 00 00 48 3b 44 24 08 0f 85 ce 00 00 00 89 d8
RSP: 0018:ffffc90009ed7808 EFLAGS: 00000002
RAX: 0000000080000002 RBX: 0000000000000000 RCX: ffffc90009ed7803
RDX: 0000000000000002 RSI: ffffffff8c0ae6e0 RDI: ffffffff8c608d80
RBP: ffffc90009ed7970 R08: ffffffff90187e2f R09: 1ffffffff2030fc5
R10: dffffc0000000000 R11: fffffbfff2030fc6 R12: 1ffff920013daf14
R13: 0000000000000046 R14: ffffc90009ed78d0 R15: dffffc0000000000
FS: 00007f80d17d86c0(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe8eb59468 CR3: 0000000063b38000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lockdep_recursion_finish kernel/locking/lockdep.c:466 [inline]
lock_release+0x5ec/0xa30 kernel/locking/lockdep.c:5782
local_lock_release include/linux/local_lock_internal.h:38 [inline]
consume_obj_stock mm/memcontrol.c:2797 [inline]
obj_cgroup_charge+0x2f2/0x5d0 mm/memcontrol.c:2919
__memcg_slab_post_alloc_hook+0x1b1/0x7e0 mm/memcontrol.c:3012
memcg_slab_post_alloc_hook mm/slub.c:2164 [inline]
slab_post_alloc_hook mm/slub.c:4002 [inline]
slab_alloc_node mm/slub.c:4041 [inline]
kmem_cache_alloc_noprof+0x1de/0x2a0 mm/slub.c:4048
__sigqueue_alloc+0x42e/0x540 kernel/signal.c:428
__send_signal_locked+0x22f/0xdc0 kernel/signal.c:1119
do_send_sig_info kernel/signal.c:1301 [inline]
group_send_sig_info+0x292/0x310 kernel/signal.c:1451
bpf_send_signal_common+0x2dd/0x430 kernel/trace/bpf_trace.c:881
____bpf_send_signal kernel/trace/bpf_trace.c:886 [inline]
bpf_send_signal+0x19/0x30 kernel/trace/bpf_trace.c:884
bpf_prog_7ba5217f62dcd359+0x40/0x44
bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline]
__bpf_prog_run include/linux/filter.h:691 [inline]
bpf_prog_run include/linux/filter.h:698 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2406 [inline]
bpf_trace_run2+0x2ec/0x540 kernel/trace/bpf_trace.c:2447
trace_sys_enter+0x93/0xd0 include/trace/events/syscalls.h:18
syscall_trace_enter+0xf8/0x150 kernel/entry/common.c:61
syscall_enter_from_user_mode_work include/linux/entry-common.h:168 [inline]
syscall_enter_from_user_mode include/linux/entry-common.h:198 [inline]
do_syscall_64+0xcc/0x230 arch/x86/entry/common.c:79
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f80d0918859
Code: 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 c7 c0 0f 00 00 00 0f 05 <0f> 1f 80 00 00 00 00 48 81 ec 48 01 00 00 49 89 d0 64 48 8b 04 25
RSP: 002b:00007f80d17d7b40 EFLAGS: 00000246 ORIG_RAX: 000000000000000f
RAX: ffffffffffffffda RBX: 00007f80d0b36060 RCX: 00007f80d0918859
RDX: 00007f80d17d7b40 RSI: 00007f80d17d7c70 RDI: 0000000000000011
RBP: 00007f80d0b36058 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f80d0b36064
R13: 0000000000000000 R14: 00007ffca018f680 R15: 00007ffca018f768