INFO: task syz-executor.2:8929 can't die for more than 143 seconds.
task:syz-executor.2 state:D stack:28264 pid: 8929 ppid: 3640 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4e90 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
request_wait_answer+0x49e/0x840 fs/fuse/dev.c:411
__fuse_request_send fs/fuse/dev.c:430 [inline]
fuse_simple_request+0x58a/0xcd0 fs/fuse/dev.c:515
fuse_send_open+0x200/0x2a0 fs/fuse/file.c:48
fuse_file_open+0x31f/0x630 fs/fuse/file.c:145
fuse_do_open fs/fuse/file.c:172 [inline]
fuse_open_common+0x29c/0x500 fs/fuse/file.c:254
do_dentry_open+0x4b9/0x1240 fs/open.c:824
do_open fs/namei.c:3476 [inline]
path_openat+0x1c9e/0x2940 fs/namei.c:3609
do_filp_open+0x1aa/0x400 fs/namei.c:3636
do_sys_openat2+0x16d/0x4d0 fs/open.c:1214
do_sys_open fs/open.c:1230 [inline]
__do_sys_openat fs/open.c:1246 [inline]
__se_sys_openat fs/open.c:1241 [inline]
__x64_sys_openat+0x13f/0x1f0 fs/open.c:1241
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f15a0160eb9
RSP: 002b:00007f159ead6168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f15a0273f60 RCX: 00007f15a0160eb9
RDX: 0000000000000000 RSI: 0000000020004280 RDI: ffffffffffffff9c
RBP: 00007f15a01bb08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe9308d23f R14: 00007f159ead6300 R15: 0000000000022000
INFO: task syz-executor.2:8929 blocked for more than 143 seconds.
Not tainted 5.16.0-next-20220111-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:28264 pid: 8929 ppid: 3640 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4e90 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
request_wait_answer+0x49e/0x840 fs/fuse/dev.c:411
__fuse_request_send fs/fuse/dev.c:430 [inline]
fuse_simple_request+0x58a/0xcd0 fs/fuse/dev.c:515
fuse_send_open+0x200/0x2a0 fs/fuse/file.c:48
fuse_file_open+0x31f/0x630 fs/fuse/file.c:145
fuse_do_open fs/fuse/file.c:172 [inline]
fuse_open_common+0x29c/0x500 fs/fuse/file.c:254
do_dentry_open+0x4b9/0x1240 fs/open.c:824
do_open fs/namei.c:3476 [inline]
path_openat+0x1c9e/0x2940 fs/namei.c:3609
do_filp_open+0x1aa/0x400 fs/namei.c:3636
do_sys_openat2+0x16d/0x4d0 fs/open.c:1214
do_sys_open fs/open.c:1230 [inline]
__do_sys_openat fs/open.c:1246 [inline]
__se_sys_openat fs/open.c:1241 [inline]
__x64_sys_openat+0x13f/0x1f0 fs/open.c:1241
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f15a0160eb9
RSP: 002b:00007f159ead6168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f15a0273f60 RCX: 00007f15a0160eb9
RDX: 0000000000000000 RSI: 0000000020004280 RDI: ffffffffffffff9c
RBP: 00007f15a01bb08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe9308d23f R14: 00007f159ead6300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb839e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460
2 locks held by getty/3288:
#0: ffff888023c67098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002b962e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2077
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-next-20220111-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:256 [inline]
watchdog+0xcb7/0xed0 kernel/hung_task.c:413
kthread+0x2e9/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 54 Comm: kworker/u4:3 Not tainted 5.16.0-next-20220111-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:106 [inline]
RIP: 0010:lock_acquire kernel/locking/lockdep.c:5635 [inline]
RIP: 0010:lock_acquire+0x15f/0x510 kernel/locking/lockdep.c:5604
Code: e9 03 0f b6 0c 01 48 89 f8 83 e0 07 83 c0 03 38 c8 7c 08 84 c9 0f 85 70 03 00 00 8b 92 64 0a 00 00 85 d2 0f 85 cc 00 00 00 9c <8f> 44 24 08 fa 48 c7 c7 00 2e ac 89 e8 b0 37 fc 07 41 89 e8 44 89
RSP: 0018:ffffc90001a3fba0 EFLAGS: 00000246
RAX: 0000000000000007 RBX: 1ffff92000347f77 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888017388a64
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8d949517
R10: fffffbfff1b292a2 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8bb839e0 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa3ad8ec000 CR3: 000000007de2d000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
rcu_read_lock include/linux/rcupdate.h:694 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0x12d/0xfa0 net/batman-adv/network-coding.c:719
process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307
worker_thread+0x657/0x1110 kernel/workqueue.c:2454
kthread+0x2e9/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: e9 03 0f b6 0c jmpq 0xcb60f08
5: 01 48 89 add %ecx,-0x77(%rax)
8: f8 clc
9: 83 e0 07 and $0x7,%eax
c: 83 c0 03 add $0x3,%eax
f: 38 c8 cmp %cl,%al
11: 7c 08 jl 0x1b
13: 84 c9 test %cl,%cl
15: 0f 85 70 03 00 00 jne 0x38b
1b: 8b 92 64 0a 00 00 mov 0xa64(%rdx),%edx
21: 85 d2 test %edx,%edx
23: 0f 85 cc 00 00 00 jne 0xf5
29: 9c pushfq
* 2a: 8f 44 24 08 popq 0x8(%rsp) <-- trapping instruction
2e: fa cli
2f: 48 c7 c7 00 2e ac 89 mov $0xffffffff89ac2e00,%rdi
36: e8 b0 37 fc 07 callq 0x7fc37eb
3b: 41 89 e8 mov %ebp,%r8d
3e: 44 rex.R
3f: 89 .byte 0x89