INFO: task kworker/u5:0:12124 blocked for more than 143 seconds.
Not tainted 5.19.0-rc4-next-20220628-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u5:0 state:D stack:27952 pid:12124 ppid: 2 flags:0x00004000
Workqueue: hci8 hci_power_on
Call Trace:
context_switch kernel/sched/core.c:5184 [inline]
__schedule+0xa09/0x4f10 kernel/sched/core.c:6496
schedule+0xd2/0x1f0 kernel/sched/core.c:6568
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6627
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa70/0x1350 kernel/locking/mutex.c:747
hci_dev_do_open+0x25/0x70 net/bluetooth/hci_core.c:480
hci_power_on+0x12e/0x630 net/bluetooth/hci_core.c:970
process_one_work+0x991/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
INFO: task syz-executor.5:22813 blocked for more than 143 seconds.
Not tainted 5.19.0-rc4-next-20220628-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:28032 pid:22813 ppid: 3635 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5184 [inline]
__schedule+0xa09/0x4f10 kernel/sched/core.c:6496
schedule+0xd2/0x1f0 kernel/sched/core.c:6568
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x378/0x530 kernel/sched/completion.c:106
__flush_work+0x56c/0xb10 kernel/workqueue.c:3075
__cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3162
hci_dev_close_sync+0x88/0x1140 net/bluetooth/hci_sync.c:4115
hci_dev_do_close+0x2d/0x70 net/bluetooth/hci_core.c:553
hci_unregister_dev+0x1bf/0x540 net/bluetooth/hci_core.c:2686
hci_uart_tty_close+0x23c/0x290 drivers/bluetooth/hci_ldisc.c:548
tty_ldisc_close+0x110/0x190 drivers/tty/tty_ldisc.c:456
tty_ldisc_kill+0x94/0x150 drivers/tty/tty_ldisc.c:608
tty_ldisc_release+0xe1/0x2a0 drivers/tty/tty_ldisc.c:776
tty_release_struct+0x20/0xe0 drivers/tty/tty_io.c:1694
tty_release+0xc70/0x1200 drivers/tty/tty_io.c:1865
__fput+0x277/0x9d0 fs/file_table.c:317
task_work_run+0xdd/0x1a0 kernel/task_work.c:177
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop kernel/entry/common.c:169 [inline]
exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:201
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f86d4a3bd4b
RSP: 002b:00007ffd319349d0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f86d4a3bd4b
RDX: 00007f86d4ba0260 RSI: ffffffffffffffff RDI: 0000000000000003
RBP: 00007f86d4b9d960 R08: 0000000000000000 R09: 00007f86d4ba0268
R10: 00007ffd31934ad0 R11: 0000000000000293 R12: 00000000000fefe5
R13: 00007ffd31934ad0 R14: 00007f86d4b9bf60 R15: 0000000000000032
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8bd864f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8bd861f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8bd87040 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491
2 locks held by getty/3276:
#0: ffff88814b052098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002d162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 drivers/tty/n_tty.c:2177
5 locks held by kworker/u4:8/3976:
3 locks held by kworker/u4:13/10352:
#0: ffff8880b9b39f18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:544
#1: ffff8880b9b277c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3e7/0x4e0 kernel/sched/psi.c:889
#2: ffff8880b9b283d8 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x5a/0x1f0 kernel/time/timer.c:999
3 locks held by kworker/u5:0/12124:
#0: ffff888020ae1138 ((wq_completion)hci8){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888020ae1138 ((wq_completion)hci8){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888020ae1138 ((wq_completion)hci8){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888020ae1138 ((wq_completion)hci8){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888020ae1138 ((wq_completion)hci8){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888020ae1138 ((wq_completion)hci8){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc90002e0fda8 ((work_completion)(&hdev->power_on)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
#2: ffff88803b08d048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_open+0x25/0x70 net/bluetooth/hci_core.c:480
3 locks held by syz-executor.5/22813:
#0: ffff88803a047098 (&tty->ldisc_sem){++++}-{0:0}, at: __tty_ldisc_lock drivers/tty/tty_ldisc.c:290 [inline]
#0: ffff88803a047098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_lock_pair_timeout drivers/tty/tty_ldisc.c:346 [inline]
#0: ffff88803a047098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_lock_pair drivers/tty/tty_ldisc.c:367 [inline]
#0: ffff88803a047098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_release+0x127/0x2a0 drivers/tty/tty_ldisc.c:775
#1: ffff88807cc58098 (&tty->ldisc_sem/1){+.+.}-{0:0}, at: __tty_ldisc_lock_nested drivers/tty/tty_ldisc.c:296 [inline]
#1: ffff88807cc58098 (&tty->ldisc_sem/1){+.+.}-{0:0}, at: tty_ldisc_lock_pair_timeout drivers/tty/tty_ldisc.c:348 [inline]
#1: ffff88807cc58098 (&tty->ldisc_sem/1){+.+.}-{0:0}, at: tty_ldisc_lock_pair drivers/tty/tty_ldisc.c:367 [inline]
#1: ffff88807cc58098 (&tty->ldisc_sem/1){+.+.}-{0:0}, at: tty_ldisc_release+0x1bd/0x2a0 drivers/tty/tty_ldisc.c:775
#2: ffff88803b08d048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x25/0x70 net/bluetooth/hci_core.c:551
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.19.0-rc4-next-20220628-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc18/0xf50 kernel/hung_task.c:369
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 10352 Comm: kworker/u4:13 Not tainted 5.19.0-rc4-next-20220628-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
Workqueue: bat_events batadv_nc_worker
RIP: 0010:batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:405 [inline]
RIP: 0010:batadv_nc_worker+0x89a/0xfa0 net/batman-adv/network-coding.c:719
Code: 83 44 24 3c 01 48 c1 e8 03 42 0f b6 04 30 84 c0 74 08 3c 03 0f 8e d4 06 00 00 48 8b 44 24 40 44 8b 7c 24 3c 8b 58 10 44 89 ff <89> de e8 4f aa 67 f8 41 39 df 0f 82 36 f8 ff ff e8 f1 ad 67 f8 48
RSP: 0018:ffffc9000889fc88 EFLAGS: 00000246
RAX: ffff888147ea0180 RBX: 0000000000000400 RCX: ffffc9000889fc10
RDX: 1ffff1100fca6c40 RSI: 0000000000000000 RDI: 00000000000003fd
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000000 R14: dffffc0000000000 R15: 00000000000003fd
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c01fc44c10 CR3: 0000000026b59000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
process_one_work+0x991/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
----------------
Code disassembly (best guess):
0: 83 44 24 3c 01 addl $0x1,0x3c(%rsp)
5: 48 c1 e8 03 shr $0x3,%rax
9: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax
e: 84 c0 test %al,%al
10: 74 08 je 0x1a
12: 3c 03 cmp $0x3,%al
14: 0f 8e d4 06 00 00 jle 0x6ee
1a: 48 8b 44 24 40 mov 0x40(%rsp),%rax
1f: 44 8b 7c 24 3c mov 0x3c(%rsp),%r15d
24: 8b 58 10 mov 0x10(%rax),%ebx
27: 44 89 ff mov %r15d,%edi
* 2a: 89 de mov %ebx,%esi <-- trapping instruction
2c: e8 4f aa 67 f8 callq 0xf867aa80
31: 41 39 df cmp %ebx,%r15d
34: 0f 82 36 f8 ff ff jb 0xfffff870
3a: e8 f1 ad 67 f8 callq 0xf867ae30
3f: 48 rex.W