INFO: task hung in pipe_read (2)

From: syzbot
Date: Sat Aug 01 2020 - 04:45:42 EST

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Hello,

syzbot found the following issue on:

HEAD commit: 01830e6c Add linux-next specific files for 20200731
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=11b922e0900000
kernel config: https://syzkaller.appspot.com/x/.config?x=2e226b2d1364112c
dashboard link: https://syzkaller.appspot.com/bug?extid=96cc7aba7e969b1d305c
compiler: gcc (GCC) 10.1.0-syz 20200507
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=140e5d5c900000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+96cc7aba7e969b1d305c@xxxxxxxxxxxxxxxxxxxxxxxxx

INFO: task syz-execprog:6857 blocked for more than 143 seconds.
Not tainted 5.8.0-rc7-next-20200731-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-execprog D27640 6857 6837 0x00004000
Call Trace:
context_switch kernel/sched/core.c:3669 [inline]
__schedule+0x8e5/0x21e0 kernel/sched/core.c:4418
schedule+0xd0/0x2a0 kernel/sched/core.c:4493
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4552
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x3e2/0x10e0 kernel/locking/mutex.c:1103
__pipe_lock fs/pipe.c:87 [inline]
pipe_read+0x136/0x13d0 fs/pipe.c:247
call_read_iter include/linux/fs.h:1870 [inline]
new_sync_read+0x5b3/0x6e0 fs/read_write.c:414
vfs_read+0x383/0x5a0 fs/read_write.c:493
ksys_read+0x1ee/0x250 fs/read_write.c:624
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4ad88b
Code: Bad RIP value.
RSP: 002b:000000c00002ae10 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000000c000020800 RCX: 00000000004ad88b
RDX: 0000000000010000 RSI: 000000c000390000 RDI: 0000000000000008
RBP: 000000c00002ae60 R08: 0000000000000001 R09: 0000000000000002
R10: 000000c000380000 R11: 0000000000000202 R12: 0000000000000003
R13: 000000c000082a80 R14: 000000c000310600 R15: 0000000000000000
INFO: task syz-executor.0:17080 blocked for more than 143 seconds.
Not tainted 5.8.0-rc7-next-20200731-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D29144 17080 16608 0x00000000
Call Trace:
context_switch kernel/sched/core.c:3669 [inline]
__schedule+0x8e5/0x21e0 kernel/sched/core.c:4418
schedule+0xd0/0x2a0 kernel/sched/core.c:4493
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4552
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x3e2/0x10e0 kernel/locking/mutex.c:1103
__pipe_lock fs/pipe.c:87 [inline]
pipe_write+0x12c/0x16c0 fs/pipe.c:435
call_write_iter include/linux/fs.h:1876 [inline]
new_sync_write+0x422/0x650 fs/read_write.c:515
vfs_write+0x5ad/0x730 fs/read_write.c:595
ksys_write+0x1ee/0x250 fs/read_write.c:648
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45cc79
Code: Bad RIP value.
RSP: 002b:00007fff6c963cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000037d40 RCX: 000000000045cc79
RDX: 000000000208e24b RSI: 0000000020000040 RDI: 0000000000000000
RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000790378
R13: 0000000000000000 R14: 0000000000000df5 R15: 000000000078bf0c
INFO: task syz-executor.0:17140 blocked for more than 144 seconds.
Not tainted 5.8.0-rc7-next-20200731-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D29144 17140 16608 0x00000000
Call Trace:
context_switch kernel/sched/core.c:3669 [inline]
__schedule+0x8e5/0x21e0 kernel/sched/core.c:4418
schedule+0xd0/0x2a0 kernel/sched/core.c:4493
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4552
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x3e2/0x10e0 kernel/locking/mutex.c:1103
__pipe_lock fs/pipe.c:87 [inline]
pipe_write+0x12c/0x16c0 fs/pipe.c:435
call_write_iter include/linux/fs.h:1876 [inline]
new_sync_write+0x422/0x650 fs/read_write.c:515
vfs_write+0x5ad/0x730 fs/read_write.c:595
ksys_write+0x1ee/0x250 fs/read_write.c:648
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45cc79
Code: Bad RIP value.
RSP: 002b:00007fff6c963cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000037d40 RCX: 000000000045cc79
RDX: 000000000208e24b RSI: 0000000020000040 RDI: 0000000000000000
RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000790378
R13: 0000000000000000 R14: 0000000000000df5 R15: 000000000078bf0c
INFO: task syz-executor.0:17145 blocked for more than 145 seconds.
Not tainted 5.8.0-rc7-next-20200731-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D29144 17145 16608 0x00000000
Call Trace:
context_switch kernel/sched/core.c:3669 [inline]
__schedule+0x8e5/0x21e0 kernel/sched/core.c:4418
schedule+0xd0/0x2a0 kernel/sched/core.c:4493
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4552
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x3e2/0x10e0 kernel/locking/mutex.c:1103
__pipe_lock fs/pipe.c:87 [inline]
pipe_write+0x12c/0x16c0 fs/pipe.c:435
call_write_iter include/linux/fs.h:1876 [inline]
new_sync_write+0x422/0x650 fs/read_write.c:515
vfs_write+0x5ad/0x730 fs/read_write.c:595
ksys_write+0x1ee/0x250 fs/read_write.c:648
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45cc79
Code: Bad RIP value.
RSP: 002b:00007fff6c963cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000037d40 RCX: 000000000045cc79
RDX: 000000000208e24b RSI: 0000000020000040 RDI: 0000000000000000
RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000790378
R13: 0000000000000000 R14: 0000000000000df5 R15: 000000000078bf0c

Showing all locks held in the system:
1 lock held by khungtaskd/1170:
#0: ffffffff89c52a80 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:5823
1 lock held by systemd-udevd/3906:
1 lock held by in:imklog/6629:
#0: ffff8880996bf930 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:930
1 lock held by syz-execprog/6857:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_read+0x136/0x13d0 fs/pipe.c:247
1 lock held by syz-executor.0/16822:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x5bd/0x16c0 fs/pipe.c:580
1 lock held by syz-executor.0/17080:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17140:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17145:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17209:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17222:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17312:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17314:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17317:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17333:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17360:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17363:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17369:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17377:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17382:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17385:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17390:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17400:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17410:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17415:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17441:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17489:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17501:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17516:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17524:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17531:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17574:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17579:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17582:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17584:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17587:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17590:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17593:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17595:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17600:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17605:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17610:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17612:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17615:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17625:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17632:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17637:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17661:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17691:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17731:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17752:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17764:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17781:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17786:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17791:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17794:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17819:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17829:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17876:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17891:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17894:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17896:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/17906:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18001:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18044:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18054:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18067:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18087:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18093:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18098:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18105:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18130:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18133:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18146:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18149:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18153:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18165:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18173:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18185:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18190:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18195:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18202:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18207:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18217:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18222:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18225:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18237:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18250:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18255:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18269:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18286:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18296:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18304:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18306:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18311:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18321:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18335:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18340:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18343:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18358:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18361:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18363:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18378:
1 lock held by syz-executor.0/18409:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/18792:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/19006:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/19154:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/19338:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/20014:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/20107:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/20266:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/20673:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/20961:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/21389:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/21601:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/21778:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/21835:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/21965:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/22161:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/22243:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/22293:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/22530:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/22681:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/22732:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/22837:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/23154:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/23328:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/23804:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/24439:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/24641:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/24706:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/24903:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/25118:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/25179:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/25463:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/25472:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/25518:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/25592:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/25594:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/25880:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/25891:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/25902:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/25953:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/26037:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/26090:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/26218:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/26292:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/26496:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/26671:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/26755:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/26764:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/27070:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/27105:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/27176:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/27637:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435
1 lock held by syz-executor.0/27730:
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:87 [inline]
#0: ffff888092562068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0x12c/0x16c0 fs/pipe.c:435

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

NMI backtrace for cpu 1
CPU: 1 PID: 1170 Comm: khungtaskd Not tainted 5.8.0-rc7-next-20200731-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x18f/0x20d lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1b3/0x223 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:147 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:253 [inline]
watchdog+0xd89/0xf30 kernel/hung_task.c:339
kthread+0x3b5/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3905 Comm: systemd-journal Not tainted 5.8.0-rc7-next-20200731-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0033:0x7ffc39794990
Code: ff ff ff 7f 48 8d 05 0f b7 ff ff 48 8d 15 08 e7 ff ff 48 0f 44 c2 48 85 ff 48 8b 40 20 74 03 48 89 07 c3 0f 1f 80 00 00 00 00 <55> 48 89 e5 41 55 4c 63 ef 41 54 49 89 f4 48 83 ec 08 41 83 fd 0f
RSP: 002b:00007ffc397271d8 EFLAGS: 00000206
RAX: 00007ffc39794990 RBX: 0000000000000000 RCX: 00000000000000cc
RDX: 00000000000003e7 RSI: 00007ffc39727200 RDI: 0000000000000000
RBP: 00007ffc39727200 R08: 00005615fdccd3e5 R09: 0000000000000018
R10: 0000000000000069 R11: 0000000000000246 R12: 000000000000014d
R13: 00000000000012bf R14: 0000000000000033 R15: 00007ffc397276f0
FS: 00007fade38dd8c0 GS: 0000000000000000

---
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