INFO: task syz.1.248:6366 blocked for more than 143 seconds.
Not tainted 6.11.0-rc2-syzkaller-00144-gdb1b4bedb9b9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.248 state:D stack:24672 pid:6366 tgid:6366 ppid:5382 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: 0033:0x7fc0f15799f9
RSP: 002b:00007fff941a24f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fc0f1717a80 RCX: 00007fc0f15799f9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fc0f1717a80 R08: 0000000000000006 R09: 00007fff941a27df
R10: 00000000005e0018 R11: 0000000000000246 R12: 000000000001ca0b
R13: 00007fff941a25f0 R14: 00007fff941a2610 R15: ffffffffffffffff
INFO: task syz.1.248:6375 blocked for more than 144 seconds.
Not tainted 6.11.0-rc2-syzkaller-00144-gdb1b4bedb9b9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.248 state:D stack:26816 pid:6375 tgid:6366 ppid:5382 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
vmsplice_to_pipe fs/splice.c:1555 [inline]
__do_sys_vmsplice fs/splice.c:1624 [inline]
__se_sys_vmsplice+0x4c3/0x1470 fs/splice.c:1598
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: 0033:0x7fc0f15799f9
RSP: 002b:00007fc0f2281038 EFLAGS: 00000246 ORIG_RAX: 0000000000000116
RAX: ffffffffffffffda RBX: 00007fc0f1716058 RCX: 00007fc0f15799f9
RDX: 0000000000000004 RSI: 0000000020000940 RDI: 0000000000000008
RBP: 00007fc0f15e78ee R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc0f1716058 R15: 00007fff941a2398
INFO: task syz.1.248:6377 blocked for more than 146 seconds.
Not tainted 6.11.0-rc2-syzkaller-00144-gdb1b4bedb9b9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.248 state:D stack:27392 pid:6377 tgid:6366 ppid:5382 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_ioctl+0xa0/0x480 fs/pipe.c:622
vfs_ioctl fs/ioctl.c:51 [inline]
do_vfs_ioctl+0xece/0x2e50 fs/ioctl.c:861
__do_sys_ioctl fs/ioctl.c:905 [inline]
__se_sys_ioctl+0x81/0x170 fs/ioctl.c:893
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: 0033:0x7fc0f15799f9
RSP: 002b:00007fc0f0fff038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fc0f1716130 RCX: 00007fc0f15799f9
RDX: 0000000020000000 RSI: 000000000000541b RDI: 0000000000000008
RBP: 00007fc0f15e78ee R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fc0f1716130 R15: 00007fff941a2398
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e9382a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e9382a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e9382a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
5 locks held by klogd/4669:
2 locks held by getty/4984:
#0: ffff88802f84a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000312b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/5388:
1 lock held by syz.1.248/6366:
#0: ffff88807a5f4068 (&pipe->mutex){+.+.}-{3:3}, at: pipe_release+0x4e/0x330 fs/pipe.c:727
1 lock held by syz.1.248/6368:
#0: ffff88807a5f4068 (&pipe->mutex){+.+.}-{3:3}, at: splice_file_to_pipe+0x2e/0x500 fs/splice.c:1292
1 lock held by syz.1.248/6375:
#0: ffff88807a5f4068 (&pipe->mutex){+.+.}-{3:3}, at: vmsplice_to_pipe fs/splice.c:1555 [inline]
#0: ffff88807a5f4068 (&pipe->mutex){+.+.}-{3:3}, at: __do_sys_vmsplice fs/splice.c:1624 [inline]
#0: ffff88807a5f4068 (&pipe->mutex){+.+.}-{3:3}, at: __se_sys_vmsplice+0x4c3/0x1470 fs/splice.c:1598
1 lock held by syz.1.248/6377:
#0: ffff88807a5f4068 (&pipe->mutex){+.+.}-{3:3}, at: pipe_ioctl+0xa0/0x480 fs/pipe.c:622
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc2-syzkaller-00144-gdb1b4bedb9b9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
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: 4669 Comm: klogd Not tainted 6.11.0-rc2-syzkaller-00144-gdb1b4bedb9b9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:unwind_done arch/x86/include/asm/unwind.h:50 [inline]
RIP: 0010:unwind_next_frame+0xa9/0x2a00 arch/x86/kernel/unwind_orc.c:475
Code: e8 03 48 89 44 24 08 42 0f b6 04 28 84 c0 0f 85 6a 20 00 00 44 8b 75 00 31 ff 44 89 f6 e8 cf 63 52 00 44 89 b4 24 8c 00 00 00 <45> 85 f6 0f 84 8a 00 00 00 48 89 5c 24 50 bf 01 00 00 00 e8 5f d6
RSP: 0018:ffffc90003226fc8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffffc900032270d8 RCX: ffff88807caf1e00
RDX: ffff88807caf1e00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900032270a0 R08: ffffffff814117f1 R09: ffffc90003227190
R10: 0000000000000003 R11: ffffffff817f1da0 R12: ffff88807caf1e00
R13: dffffc0000000000 R14: 0000000000000001 R15: ffffffff897b816a
FS: 00007f01aa50b380(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff715d15f88 CR3: 000000007cf4e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2252 [inline]
slab_free mm/slub.c:4473 [inline]
kfree+0x149/0x360 mm/slub.c:4594
free_slab_obj_exts mm/slub.c:2031 [inline]
unaccount_slab mm/slub.c:2457 [inline]
__free_slab+0xc8/0x240 mm/slub.c:2553
discard_slab mm/slub.c:2583 [inline]
__put_partials+0xeb/0x130 mm/slub.c:3051
put_cpu_partial+0x17c/0x250 mm/slub.c:3126
__slab_free+0x2ea/0x3d0 mm/slub.c:4343
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9e/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_kmalloc+0x23/0xb0 mm/kasan/common.c:378
kasan_kmalloc include/linux/kasan.h:211 [inline]
__do_kmalloc_node mm/slub.c:4158 [inline]
__kmalloc_node_track_caller_noprof+0x225/0x440 mm/slub.c:4177
kmalloc_reserve+0x111/0x2a0 net/core/skbuff.c:605
__alloc_skb+0x1f3/0x440 net/core/skbuff.c:674
alloc_skb include/linux/skbuff.h:1320 [inline]
alloc_skb_with_frags+0xc3/0x770 net/core/skbuff.c:6526
sock_alloc_send_pskb+0x91a/0xa60 net/core/sock.c:2815
unix_dgram_sendmsg+0x6d3/0x1f80 net/unix/af_unix.c:2030
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
__sys_sendto+0x3a4/0x4f0 net/socket.c:2204
__do_sys_sendto net/socket.c:2216 [inline]
__se_sys_sendto net/socket.c:2212 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2212
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: 0033:0x7f01aa66d9b5
Code: 8b 44 24 08 48 83 c4 28 48 98 c3 48 98 c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 26 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 7a 48 8b 15 44 c4 0c 00 f7 d8 64 89 02 48 83
RSP: 002b:00007fffd104adb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f01aa66d9b5
RDX: 0000000000000073 RSI: 000055f2f36af5f0 RDI: 0000000000000003
RBP: 000055f2f36aa910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007f01aa7fb212 R14: 00007fffd104aeb8 R15: 0000000000000000