INFO: task syz.1.1196:9642 blocked for more than 143 seconds.
Not tainted 6.11.0-rc5-syzkaller-00768-g221f9cce949a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.1196 state:D stack:24672 pid:9642 tgid:9642 ppid:9233 flags:0x00004000
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: 0033:0x7f3ee0979eb9
RSP: 002b:00007ffd93ed4d38 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f3ee0b17a80 RCX: 00007f3ee0979eb9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f3ee0b17a80 R08: 0000000000000006 R09: 00007ffd93ed502f
R10: 00000000003ffc08 R11: 0000000000000246 R12: 0000000000058de5
R13: 00007ffd93ed4e40 R14: 0000000000000032 R15: ffffffffffffffff
INFO: task syz.1.1196:9645 blocked for more than 144 seconds.
Not tainted 6.11.0-rc5-syzkaller-00768-g221f9cce949a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.1196 state:D stack:23800 pid:9645 tgid:9642 ppid:9233 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: 0033:0x7f3ee0979eb9
RSP: 002b:00007f3ee16c1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000116
RAX: ffffffffffffffda RBX: 00007f3ee0b15f80 RCX: 00007f3ee0979eb9
RDX: 0000000000000002 RSI: 0000000020000940 RDI: 000000000000000a
RBP: 00007f3ee09e793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3ee0b15f80 R15: 00007ffd93ed4bd8
INFO: task syz.1.1196:9654 blocked for more than 146 seconds.
Not tainted 6.11.0-rc5-syzkaller-00768-g221f9cce949a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.1196 state:D stack:27360 pid:9654 tgid:9642 ppid:9233 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: 0033:0x7f3ee0979eb9
RSP: 002b:00007f3ee167f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3ee0b16130 RCX: 00007f3ee0979eb9
RDX: 0000000020000000 RSI: 000000000000541b RDI: 000000000000000a
RBP: 00007f3ee09e793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f3ee0b16130 R15: 00007ffd93ed4bd8
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
1 lock held by dhcpcd/4899:
2 locks held by getty/4987:
#0: ffff88803013b0a0 (&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 dhcpcd/5041:
1 lock held by syz.1.1196/9642:
#0: ffff88806c648468 (&pipe->mutex){+.+.}-{3:3}, at: pipe_release+0x4e/0x330 fs/pipe.c:727
1 lock held by syz.1.1196/9645:
#0: ffff88806c648468 (&pipe->mutex){+.+.}-{3:3}, at: vmsplice_to_pipe fs/splice.c:1555 [inline]
#0: ffff88806c648468 (&pipe->mutex){+.+.}-{3:3}, at: __do_sys_vmsplice fs/splice.c:1624 [inline]
#0: ffff88806c648468 (&pipe->mutex){+.+.}-{3:3}, at: __se_sys_vmsplice+0x4c3/0x1470 fs/splice.c:1598
1 lock held by syz.1.1196/9648:
#0: ffff88806c648468 (&pipe->mutex){+.+.}-{3:3}, at: splice_file_to_pipe+0x2e/0x500 fs/splice.c:1292
1 lock held by syz.1.1196/9654:
#0: ffff88806c648468 (&pipe->mutex){+.+.}-{3:3}, at: pipe_ioctl+0xa0/0x480 fs/pipe.c:622
1 lock held by syz.4.1214/9715:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc5-syzkaller-00768-g221f9cce949a #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: 1061 Comm: kworker/u8:7 Not tainted 6.11.0-rc5-syzkaller-00768-g221f9cce949a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:unwind_next_frame+0x7a/0x2a00 arch/x86/kernel/unwind_orc.c:471
Code: 8d 5d 38 48 89 d8 48 c1 e8 03 48 89 44 24 58 42 80 3c 28 00 74 08 48 89 df e8 62 af b9 00 48 8b 45 38 48 89 84 24 90 00 00 00 <48> 89 e8 48 c1 e8 03 48 89 44 24 08 42 0f b6 04 28 84 c0 0f 85 6a
RSP: 0018:ffffc90003c674e8 EFLAGS: 00000246
RAX: ffffc90003c67b70 RBX: ffffc90003c675f8 RCX: ffff8880278a8000
RDX: 0000000000000000 RSI: ffffffff8b03d0ab RDI: ffffc90003c675c0
RBP: ffffc90003c675c0 R08: 0000000000000008 R09: ffffc90003c676b0
R10: 0000000000000003 R11: ffffffff817f2f00 R12: ffff8880278a8000
R13: dffffc0000000000 R14: ffffc90003c676a0 R15: ffffffff8b03d0ab
FS: 0000000000000000(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000560a9b671680 CR3: 0000000032bfc000 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]
kmem_cache_free+0x145/0x350 mm/slub.c:4548
skb_kfree_head net/core/skbuff.c:1085 [inline]
skb_free_head net/core/skbuff.c:1099 [inline]
skb_release_data+0x64d/0x880 net/core/skbuff.c:1126
skb_release_all net/core/skbuff.c:1191 [inline]
__kfree_skb net/core/skbuff.c:1205 [inline]
sk_skb_reason_drop+0x1c9/0x380 net/core/skbuff.c:1243
kfree_skb_reason include/linux/skbuff.h:1260 [inline]
kfree_skb include/linux/skbuff.h:1269 [inline]
ieee80211_iface_work+0x272/0xf20 net/mac80211/iface.c:1644
cfg80211_wiphy_work+0x2db/0x490 net/wireless/core.c:440
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
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