Bluetooth: hci1 command 0x0406 tx timeout
Bluetooth: hci4 command 0x0406 tx timeout
Bluetooth: hci2 command 0x0406 tx timeout
Bluetooth: hci3 command 0x0406 tx timeout
Bluetooth: hci5 command 0x0406 tx timeout
INFO: task syz-executor.0:9894 blocked for more than 140 seconds.
Not tainted 4.14.282-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D26720 9894 8005 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2811 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3387
schedule+0x8d/0x1b0 kernel/sched/core.c:3431
__rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline]
rwsem_down_write_failed+0x343/0x6d0 kernel/locking/rwsem-xadd.c:617
call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:105
__down_write arch/x86/include/asm/rwsem.h:126 [inline]
down_write_nested+0x51/0x90 kernel/locking/rwsem.c:174
inode_lock_nested include/linux/fs.h:754 [inline]
lock_rename+0xd4/0x280 fs/namei.c:2894
SYSC_renameat2 fs/namei.c:4594 [inline]
SyS_renameat2+0x5ab/0xad0 fs/namei.c:4533
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7fe98c6fd109
RSP: 002b:00007fe98b072168 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007fe98c80ff60 RCX: 00007fe98c6fd109
RDX: 0000000000000006 RSI: 0000000020000080 RDI: 0000000000000004
RBP: 00007fe98c7570ad R08: 0000000000000000 R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcd36308cf R14: 00007fe98b072300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/1534:
#0: (tasklist_lock){.+.+}, at: [<ffffffff87026d5c>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548
1 lock held by in:imklog/7700:
#0: (&f->f_pos_lock){+.+.}, at: [<ffffffff818d748b>] __fdget_pos+0x1fb/0x2b0 fs/file.c:819
4 locks held by syz-executor.0/9894:
#0: (sb_writers#13){.+.+}, at: [<ffffffff818e04fa>] sb_start_write include/linux/fs.h:1551 [inline]
#0: (sb_writers#13){.+.+}, at: [<ffffffff818e04fa>] mnt_want_write+0x3a/0xb0 fs/namespace.c:386
#1: (&type->s_vfs_rename_key){+.+.}, at: [<ffffffff81891a94>] lock_rename+0x54/0x280 fs/namei.c:2889
#2: (&type->i_mutex_dir_key#8/1){+.+.}, at: [<ffffffff81891ae0>] inode_lock_nested include/linux/fs.h:754 [inline]
#2: (&type->i_mutex_dir_key#8/1){+.+.}, at: [<ffffffff81891ae0>] lock_rename+0xa0/0x280 fs/namei.c:2893
#3: (&type->i_mutex_dir_key#8/2){+.+.}, at: [<ffffffff81891b14>] inode_lock_nested include/linux/fs.h:754 [inline]
#3: (&type->i_mutex_dir_key#8/2){+.+.}, at: [<ffffffff81891b14>] lock_rename+0xd4/0x280 fs/namei.c:2894
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1534 Comm: khungtaskd Not tainted 4.14.282-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x281 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x13a/0x180 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline]
watchdog+0x5b9/0xb40 kernel/hung_task.c:274
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3 Comm: kworker/0:0 Not tainted 4.14.282-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_long gc_worker
task: ffff8880b5fe80c0 task.stack: ffff8880b5ff0000
RIP: 0010:task_irq_context kernel/locking/lockdep.c:3101 [inline]
RIP: 0010:__lock_acquire+0x435/0x3f20 kernel/locking/lockdep.c:3436
RSP: 0018:ffff8880b5ff7ab0 EFLAGS: 00000803
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 1ffff11016bfd132 RDI: ffff8880b5fe8934
RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000
R10: ffff8880b5fe8998 R11: ffff8880b5fe80c0 R12: ffff8880b5fe89b0
R13: 0000000000000012 R14: 0000000000000012 R15: ffffffff8bed1d40
FS: 0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6be0d28000 CR3: 00000000a1e75000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
rcu_lock_acquire include/linux/rcupdate.h:242 [inline]
rcu_read_lock include/linux/rcupdate.h:629 [inline]
gc_worker+0x12e/0xb50 net/netfilter/nf_conntrack_core.c:1084
process_one_work+0x793/0x14a0 kernel/workqueue.c:2117
worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 83 54 08 00 00 49 8d bb 74 08 00 00 ba 02 00 00 00 48 89 f9 85 c0 0f 45 c2 48 c1 e9 03 48 ba 00 00 00 00 00 fc ff df 0f b6 0c 11 <48> 89 fa 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 dd 25 00 00
----------------
Code disassembly (best guess):
0: 83 54 08 00 00 adcl $0x0,0x0(%rax,%rcx,1)
5: 49 8d bb 74 08 00 00 lea 0x874(%r11),%rdi
c: ba 02 00 00 00 mov $0x2,%edx
11: 48 89 f9 mov %rdi,%rcx
14: 85 c0 test %eax,%eax
16: 0f 45 c2 cmovne %edx,%eax
19: 48 c1 e9 03 shr $0x3,%rcx
1d: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx
24: fc ff df
27: 0f b6 0c 11 movzbl (%rcx,%rdx,1),%ecx
* 2b: 48 89 fa mov %rdi,%rdx <-- trapping instruction
2e: 83 e2 07 and $0x7,%edx
31: 83 c2 03 add $0x3,%edx
34: 38 ca cmp %cl,%dl
36: 7c 08 jl 0x40
38: 84 c9 test %cl,%cl
3a: 0f 85 dd 25 00 00 jne 0x261d