INFO: task syz-executor.3:6956 blocked for more than 143 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:24632 pid:6956 tgid:6956 ppid:5094 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
request_wait_answer fs/fuse/dev.c:407 [inline]
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x1199/0x1b90 fs/fuse/dev.c:513
fuse_flush+0x69f/0x950 fs/fuse/file.c:523
filp_flush+0xb7/0x160 fs/open.c:1516
__do_sys_close fs/open.c:1550 [inline]
__se_sys_close fs/open.c:1541 [inline]
__x64_sys_close+0x75/0x110 fs/open.c:1541
do_syscall_64+0xfd/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f902827cd5a
RSP: 002b:00007ffd4f9658a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 000000000000000a RCX: 00007f902827cd5a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000009
RBP: 0000000000000032 R08: 0000001b31520000 R09: 0000000000000009
R10: 000000008136099b R11: 0000000000000293 R12: 00007f9027e0a080
R13: ffffffffffffffff R14: 00007f9027e00000 R15: 0000000000022956
INFO: task syz-executor.3:6958 blocked for more than 143 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:21744 pid:6958 tgid:6956 ppid:5094 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17d3/0x4a20 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6828
request_wait_answer fs/fuse/dev.c:407 [inline]
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x1199/0x1b90 fs/fuse/dev.c:513
fuse_flush+0x69f/0x950 fs/fuse/file.c:523
filp_flush+0xb7/0x160 fs/open.c:1516
filp_close+0x1e/0x40 fs/open.c:1529
close_files fs/file.c:432 [inline]
put_files_struct+0x1b6/0x360 fs/file.c:447
do_exit+0x9c8/0x27e0 kernel/exit.c:873
do_group_exit+0x207/0x2c0 kernel/exit.c:1027
get_signal+0x176e/0x1850 kernel/signal.c:2907
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0xc9/0x360 kernel/entry/common.c:212
do_syscall_64+0x10a/0x240 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f902827de69
RSP: 002b:00007f902902a178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f90283abf88 RCX: 00007f902827de69
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f90283abf88
RBP: 00007f90283abf80 R08: 00007f902902a6c0 R09: 00007f902902a6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f90283abf8c
R13: 000000000000000b R14: 00007ffd4f9656f0 R15: 00007ffd4f9657d8
Showing all locks held in the system:
2 locks held by kworker/u8:0/10:
1 lock held by khungtaskd/29:
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4826:
#0: ffff88802a6530a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by kworker/u9:9/5106:
#0: ffff8880227fc948 ((wq_completion)hci5){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3229 [inline]
#0: ffff8880227fc948 ((wq_completion)hci5){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x1770 kernel/workqueue.c:3335
#1: ffffc900046c7d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3230 [inline]
#1: ffffc900046c7d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x1770 kernel/workqueue.c:3335
#2: ffff88807cab9060 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:309
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
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:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfb0/0xff0 kernel/hung_task.c:379
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 10 Comm: kworker/u8:0 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:check_preemption_disabled+0x49/0x120 lib/smp_processor_id.c:55
Code: 74 65 8b 05 31 6f 8f 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 48 83 c4 10 5b <41> 5c 41 5e 41 5f e9 dc ea 0a 00 48 c7 04 24 00 00 00 00 9c 8f 04
RSP: 0018:ffffc900000f7b18 EFLAGS: 00000282
RAX: 0000000000000001 RBX: ffff88807dd8b440 RCX: ffff888016ea9e00
RDX: ffff888016ea9e00 RSI: ffffffff8bfed2e0 RDI: ffffffff8bfed2a0
RBP: ffff88802c3e4748 R08: ffffffff8b408a51 R09: 1ffffffff259caa0
R10: dffffc0000000000 R11: fffffbfff259caa1 R12: ffff88805ed50ca0
R13: 00000000000000e9 R14: 0000000000000001 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555dc2a938 CR3: 000000000df32000 CR4: 0000000000350ef0
Call Trace:
rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:700
rcu_read_lock include/linux/rcupdate.h:751 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0x10b/0x610 net/batman-adv/network-coding.c:719
process_one_work kernel/workqueue.c:3254 [inline]
process_scheduled_works+0xa02/0x1770 kernel/workqueue.c:3335
worker_thread+0x86d/0xd70 kernel/workqueue.c:3416
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243