INFO: task kworker/u5:4:3654 blocked for more than 143 seconds.
Not tainted 5.19.0-rc5-syzkaller-00049-gc1084b6c5620 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u5:4 state:D stack:26912 pid: 3654 ppid: 2 flags:0x00004000
Workqueue: hci6 hci_power_on
Call Trace:
context_switch kernel/sched/core.c:5146 [inline]
__schedule+0x957/0xe20 kernel/sched/core.c:6458
schedule+0xeb/0x1b0 kernel/sched/core.c:6530
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6589
__mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
hci_dev_do_open net/bluetooth/hci_core.c:480 [inline]
hci_power_on+0x178/0x650 net/bluetooth/hci_core.c:963
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
INFO: task syz-executor.0:19471 blocked for more than 143 seconds.
Not tainted 5.19.0-rc5-syzkaller-00049-gc1084b6c5620 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:26448 pid:19471 ppid: 3641 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5146 [inline]
__schedule+0x957/0xe20 kernel/sched/core.c:6458
schedule+0xeb/0x1b0 kernel/sched/core.c:6530
schedule_timeout+0xac/0x300 kernel/time/timer.c:1911
do_wait_for_common+0x3ea/0x560 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x46/0x60 kernel/sched/completion.c:138
__flush_work kernel/workqueue.c:3075 [inline]
__cancel_work_timer+0x585/0x740 kernel/workqueue.c:3162
hci_dev_close_sync+0x31/0xcc0 net/bluetooth/hci_sync.c:4091
hci_dev_do_close net/bluetooth/hci_core.c:553 [inline]
hci_unregister_dev+0x1b1/0x460 net/bluetooth/hci_core.c:2685
hci_uart_tty_close+0x1a7/0x280 drivers/bluetooth/hci_ldisc.c:548
tty_ldisc_kill drivers/tty/tty_ldisc.c:608 [inline]
tty_ldisc_release+0x23c/0x510 drivers/tty/tty_ldisc.c:776
tty_release_struct+0x27/0xd0 drivers/tty/tty_io.c:1694
tty_release+0xc06/0xe60 drivers/tty/tty_io.c:1865
__fput+0x3b9/0x820 fs/file_table.c:317
task_work_run+0x146/0x1c0 kernel/task_work.c:177
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0x134/0x160 kernel/entry/common.c:169
exit_to_user_mode_prepare+0xad/0x110 kernel/entry/common.c:201
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0x2e/0x60 kernel/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f238a23bd4b
RSP: 002b:00007fffe4231130 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f238a23bd4b
RDX: 00007f238a3a01c0 RSI: ffffffffffffffff RDI: 0000000000000003
RBP: 00007f238a39d960 R08: 0000000000000000 R09: 00007f238a3a01c8
R10: 00007fffe4231230 R11: 0000000000000293 R12: 0000000000202a89
R13: 00007fffe4231230 R14: 00007f238a39bf60 R15: 0000000000000032
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8cb1e820 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by klogd/2965:
1 lock held by dhcpcd/3187:
2 locks held by getty/3292:
#0: ffff8880272ad098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc90002d162e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6e8/0x1e50 drivers/tty/n_tty.c:2124
3 locks held by kworker/u5:4/3654:
#0: ffff888075dcf138 ((wq_completion)hci6){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc9000320fd00 ((work_completion)(&hdev->power_on)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffff88803e2bd048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_open net/bluetooth/hci_core.c:480 [inline]
#2: ffff88803e2bd048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_power_on+0x178/0x650 net/bluetooth/hci_core.c:963
3 locks held by syz-executor.0/19471:
#0: ffff88807d7e9098 (&tty->ldisc_sem){++++}-{0:0}, at: __tty_ldisc_lock drivers/tty/tty_ldisc.c:290 [inline]
#0: ffff88807d7e9098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_lock_pair_timeout drivers/tty/tty_ldisc.c:346 [inline]
#0: ffff88807d7e9098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_lock_pair drivers/tty/tty_ldisc.c:367 [inline]
#0: ffff88807d7e9098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_release+0xb3/0x510 drivers/tty/tty_ldisc.c:775
#1: ffff88807d7ec098 (&tty->ldisc_sem/1){+.+.}-{0:0}, at: __tty_ldisc_lock_nested drivers/tty/tty_ldisc.c:296 [inline]
#1: ffff88807d7ec098 (&tty->ldisc_sem/1){+.+.}-{0:0}, at: tty_ldisc_lock_pair_timeout drivers/tty/tty_ldisc.c:348 [inline]
#1: ffff88807d7ec098 (&tty->ldisc_sem/1){+.+.}-{0:0}, at: tty_ldisc_lock_pair drivers/tty/tty_ldisc.c:367 [inline]
#1: ffff88807d7ec098 (&tty->ldisc_sem/1){+.+.}-{0:0}, at: tty_ldisc_release+0xd7/0x510 drivers/tty/tty_ldisc.c:775
#2: ffff88803e2bd048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:551 [inline]
#2: ffff88803e2bd048 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x1a9/0x460 net/bluetooth/hci_core.c:2685
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.19.0-rc5-syzkaller-00049-gc1084b6c5620 #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+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x473/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x168/0x280 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+0xcf9/0xd40 kernel/hung_task.c:369
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 21 Comm: ksoftirqd/1 Not tainted 5.19.0-rc5-syzkaller-00049-gc1084b6c5620 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
RIP: 0010:stack_trace_consume_entry+0x108/0x270 kernel/stacktrace.c:93
Code: 8d 1c c3 48 89 d8 48 c1 e8 03 80 3c 10 00 74 1a 4d 89 cf 48 89 df 49 89 d6 49 89 f5 e8 61 e3 64 00 4d 89 f9 4c 89 ee 4c 89 f2 <48> 89 33 41 8b 19 41 8a 04 14 84 c0 0f 85 30 01 00 00 3b 5d 00 0f
RSP: 0018:ffffc900001b6970 EFLAGS: 00000246
RAX: 1ffff92000036d7f RBX: ffffc900001b6bf8 RCX: ffffffff8f4c5000
RDX: dffffc0000000000 RSI: ffffffff8159cdc6 RDI: ffffc900001b6aac
RBP: ffffc900001b6aa8 R08: 0000000000000015 R09: ffffc900001b6ab0
R10: fffff52000036d44 R11: 1ffff92000036d42 R12: 1ffff92000036d55
R13: 1ffff92000036d55 R14: 0000000000000016 R15: 1ffff92000036d56
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c008441ec8 CR3: 0000000075a1d000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x106/0x140 arch/x86/kernel/stacktrace.c:27
stack_trace_save+0x12d/0x1f0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:45 [inline]
set_alloc_info mm/kasan/common.c:436 [inline]
__kasan_slab_alloc+0xb2/0xe0 mm/kasan/common.c:469
kasan_slab_alloc include/linux/kasan.h:224 [inline]
slab_post_alloc_hook mm/slab.h:750 [inline]
slab_alloc_node mm/slub.c:3243 [inline]
slab_alloc mm/slub.c:3251 [inline]
__kmem_cache_alloc_lru mm/slub.c:3258 [inline]
kmem_cache_alloc+0x199/0x2f0 mm/slub.c:3268
skb_ext_maybe_cow net/core/skbuff.c:6331 [inline]
skb_ext_add+0x1be/0x8d0 net/core/skbuff.c:6397
nf_bridge_unshare net/bridge/br_netfilter_hooks.c:160 [inline]
br_nf_forward_ip+0xc3/0x1300 net/bridge/br_netfilter_hooks.c:589
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xae/0x1e0 net/netfilter/core.c:620
nf_hook+0x26e/0x3d0 include/linux/netfilter.h:262
NF_HOOK include/linux/netfilter.h:305 [inline]
__br_forward+0x43d/0x710 net/bridge/br_forward.c:115
deliver_clone net/bridge/br_forward.c:131 [inline]
maybe_deliver net/bridge/br_forward.c:189 [inline]
br_flood+0x683/0x890 net/bridge/br_forward.c:231
br_handle_frame_finish+0x1349/0x1810 net/bridge/br_input.c:193
br_nf_hook_thresh+0x478/0x560 net/bridge/br_netfilter_hooks.c:1039
br_nf_pre_routing_finish_ipv6+0x94a/0xbd0
NF_HOOK include/linux/netfilter.h:307 [inline]
br_nf_pre_routing_ipv6+0x294/0x340 net/bridge/br_netfilter_ipv6.c:236
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:255 [inline]
br_handle_frame+0x8c5/0x10e0 net/bridge/br_input.c:399
__netif_receive_skb_core+0x1448/0x3c00 net/core/dev.c:5374
__netif_receive_skb_one_core net/core/dev.c:5478 [inline]
__netif_receive_skb+0x11a/0x500 net/core/dev.c:5594
process_backlog+0x4f8/0x8b0 net/core/dev.c:5922
__napi_poll+0xbe/0x4b0 net/core/dev.c:6488
napi_poll net/core/dev.c:6555 [inline]
net_rx_action+0x76c/0x10b0 net/core/dev.c:6666
__do_softirq+0x382/0x793 kernel/softirq.c:571
run_ksoftirqd+0xc1/0x120 kernel/softirq.c:934
smpboot_thread_fn+0x533/0x9d0 kernel/smpboot.c:164
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess):
0: 8d 1c c3 lea (%rbx,%rax,8),%ebx
3: 48 89 d8 mov %rbx,%rax
6: 48 c1 e8 03 shr $0x3,%rax
a: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1)
e: 74 1a je 0x2a
10: 4d 89 cf mov %r9,%r15
13: 48 89 df mov %rbx,%rdi
16: 49 89 d6 mov %rdx,%r14
19: 49 89 f5 mov %rsi,%r13
1c: e8 61 e3 64 00 callq 0x64e382
21: 4d 89 f9 mov %r15,%r9
24: 4c 89 ee mov %r13,%rsi
27: 4c 89 f2 mov %r14,%rdx
* 2a: 48 89 33 mov %rsi,(%rbx) <-- trapping instruction
2d: 41 8b 19 mov (%r9),%ebx
30: 41 8a 04 14 mov (%r12,%rdx,1),%al
34: 84 c0 test %al,%al
36: 0f 85 30 01 00 00 jne 0x16c
3c: 3b 5d 00 cmp 0x0(%rbp),%ebx
3f: 0f .byte 0xf