INFO: task syz.3.2641:14341 blocked for more than 143 seconds.
Not tainted 6.11.0-rc3-syzkaller-00507-g4d36b2b1dea4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.2641 state:D stack:24672 pid:14341 tgid:14341 ppid:11149 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: 0033:0x7fac08d79e79
RSP: 002b:00007ffd9e0025a8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fac08f17a80 RCX: 00007fac08d79e79
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fac08f17a80 R08: 0000000000000006 R09: 00007ffd9e00288f
R10: 00000000003ffa6c R11: 0000000000000246 R12: 0000000000076af9
R13: 00007ffd9e0026a0 R14: 00007ffd9e0026c0 R15: ffffffffffffffff
INFO: task syz.3.2641:14346 blocked for more than 145 seconds.
Not tainted 6.11.0-rc3-syzkaller-00507-g4d36b2b1dea4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.2641 state:D stack:24864 pid:14346 tgid:14341 ppid:11149 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
splice_pipe_to_pipe fs/splice.c:1765 [inline]
do_splice+0x3ee/0x1900 fs/splice.c:1331
__do_splice fs/splice.c:1436 [inline]
__do_sys_splice fs/splice.c:1652 [inline]
__se_sys_splice+0x331/0x4a0 fs/splice.c:1634
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: 0033:0x7fac08d79e79
RSP: 002b:00007fac087ff038 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00007fac08f16058 RCX: 00007fac08d79e79
RDX: 0000000000000008 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007fac08de7916 R08: 0000000000000080 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fac08f16058 R15: 00007ffd9e002448
INFO: task syz.3.2641:14353 blocked for more than 146 seconds.
Not tainted 6.11.0-rc3-syzkaller-00507-g4d36b2b1dea4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.2641 state:D stack:27392 pid:14353 tgid:14341 ppid:11149 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: 0033:0x7fac08d79e79
RSP: 002b:00007fac087bd038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fac08f16208 RCX: 00007fac08d79e79
RDX: 000000000000fdef RSI: 0000000020000240 RDI: 0000000000000008
RBP: 00007fac08de7916 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fac08f16208 R15: 00007ffd9e002448
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e9382e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e9382e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e9382e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
2 locks held by getty/4977:
#0: ffff88802b44f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/11149:
3 locks held by kworker/u8:15/11433:
1 lock held by syz.3.2641/14341:
#0: ffff88807f7d1868 (&pipe->mutex){+.+.}-{3:3}, at: pipe_release+0x4e/0x330 fs/pipe.c:727
1 lock held by syz.3.2641/14342:
#0: ffff88807f7d1868 (&pipe->mutex){+.+.}-{3:3}, at: splice_file_to_pipe+0x2e/0x500 fs/splice.c:1292
2 locks held by syz.3.2641/14346:
#0: ffff88807f7d0c68 (&pipe->mutex){+.+.}-{3:3}, at: pipe_lock fs/pipe.c:92 [inline]
#0: ffff88807f7d0c68 (&pipe->mutex){+.+.}-{3:3}, at: pipe_double_lock+0x6d/0x110 fs/pipe.c:111
#1: ffff88807f7d1868 (&pipe->mutex){+.+.}-{3:3}, at: splice_pipe_to_pipe fs/splice.c:1765 [inline]
#1: ffff88807f7d1868 (&pipe->mutex){+.+.}-{3:3}, at: do_splice+0x3ee/0x1900 fs/splice.c:1331
1 lock held by syz.3.2641/14353:
#0: ffff88807f7d1868 (&pipe->mutex){+.+.}-{3:3}, at: pipe_write+0x1c9/0x1a40 fs/pipe.c:455
1 lock held by syz.4.2659/14414:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc3-syzkaller-00507-g4d36b2b1dea4 #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+0xfee/0x1030 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 11149 Comm: syz-executor Not tainted 6.11.0-rc3-syzkaller-00507-g4d36b2b1dea4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:asm_exc_int3+0x2e/0x40 arch/x86/include/asm/idtentry.h:622
Code: 0f 01 ca fc 6a ff f6 44 24 10 03 75 18 ff 74 24 28 ff 74 24 28 ff 74 24 28 ff 74 24 28 ff 74 24 28 ff 74 24 28 e8 52 07 00 00 <48> 89 c4 48 89 e7 e8 c7 81 d6 ff e9 82 08 00 00 66 90 f3 0f 1e fa
RSP: 0018:ffffc90009997a48 EFLAGS: 00000097
RAX: ffffc90009997a48 RBX: 0000000000000000 RCX: ffffffff8be0176a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8ea4aa20
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 000055558bfa7500(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556ebf29a680 CR3: 000000007d65e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace: