INFO: task syz-executor.0:559 blocked for more than 143 seconds.
Not tainted 5.18.0-rc7-syzkaller-00119-gb015dcd62b86 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27872 pid: 559 ppid: 3632 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388
schedule+0xd2/0x1f0 kernel/sched/core.c:6460
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1860
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x373/0x530 kernel/sched/completion.c:106
io_wq_exit_workers fs/io-wq.c:1266 [inline]
io_wq_put_and_exit+0x4d6/0xe40 fs/io-wq.c:1301
io_uring_clean_tctx fs/io_uring.c:10394 [inline]
io_uring_cancel_generic+0x538/0x5bc fs/io_uring.c:10464
io_uring_files_cancel include/linux/io_uring.h:18 [inline]
do_exit+0x4f9/0x2a00 kernel/exit.c:750
do_group_exit+0xd2/0x2f0 kernel/exit.c:925
get_signal+0x22df/0x24c0 kernel/signal.c:2864
arch_do_signal_or_restart+0x82/0x20f0 arch/x86/kernel/signal.c:867
exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:294
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fb467e890e9
RSP: 002b:00007fb469089218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fb467f9bf68 RCX: 00007fb467e890e9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fb467f9bf68
RBP: 00007fb467f9bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb467f9bf6c
R13: 00007ffe87404cff R14: 00007fb469089300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd7f5e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6467
2 locks held by getty/3287:
#0: ffff88814c307098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900013e82e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcea/0x1230 drivers/tty/n_tty.c:2075
2 locks held by kworker/u4:6/4005:
2 locks held by kworker/u4:3/17732:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 5.18.0-rc7-syzkaller-00119-gb015dcd62b86 #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+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+0xc1d/0xf50 kernel/hung_task.c:369
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4005 Comm: kworker/u4:6 Not tainted 5.18.0-rc7-syzkaller-00119-gb015dcd62b86 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__kasan_check_read+0x0/0x10 mm/kasan/shadow.c:31
Code: 39 c7 73 0b 0f 0b 48 83 c4 60 5b 5d 41 5c c3 48 05 00 80 00 00 48 89 fb 48 39 c7 0f 82 da fc 66 07 eb e1 cc cc cc cc cc cc cc <48> 8b 0c 24 89 f6 31 d2 e9 b3 fa ff ff 0f 1f 00 48 8b 0c 24 89 f6
RSP: 0018:ffffc9000527fa30 EFLAGS: 00000047
RAX: 0000000000000000 RBX: ffffffff8bd7f5e0 RCX: ffffffff815c7cbb
RDX: 1ffff1100ff37d62 RSI: 0000000000000008 RDI: ffffffff90072900
RBP: 000000000000002d R08: 0000000000000000 R09: ffffffff90072907
R10: fffffbfff200e520 R11: 0000000000000001 R12: ffff88807f9beaf0
R13: ffff88807f9be040 R14: 0000000000020000 R15: 0000000000000002
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0100bd930 CR3: 000000004ee6e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:71 [inline]
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
hlock_class kernel/locking/lockdep.c:197 [inline]
check_wait_context kernel/locking/lockdep.c:4703 [inline]
__lock_acquire+0x481/0x56c0 kernel/locking/lockdep.c:4979
lock_acquire kernel/locking/lockdep.c:5641 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5606
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+0x996/0x1610 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:298
----------------
Code disassembly (best guess):
0: 39 c7 cmp %eax,%edi
2: 73 0b jae 0xf
4: 0f 0b ud2
6: 48 83 c4 60 add $0x60,%rsp
a: 5b pop %rbx
b: 5d pop %rbp
c: 41 5c pop %r12
e: c3 retq
f: 48 05 00 80 00 00 add $0x8000,%rax
15: 48 89 fb mov %rdi,%rbx
18: 48 39 c7 cmp %rax,%rdi
1b: 0f 82 da fc 66 07 jb 0x766fcfb
21: eb e1 jmp 0x4
23: cc int3
24: cc int3
25: cc int3
26: cc int3
27: cc int3
28: cc int3
29: cc int3
* 2a: 48 8b 0c 24 mov (%rsp),%rcx <-- trapping instruction
2e: 89 f6 mov %esi,%esi
30: 31 d2 xor %edx,%edx
32: e9 b3 fa ff ff jmpq 0xfffffaea
37: 0f 1f 00 nopl (%rax)
3a: 48 8b 0c 24 mov (%rsp),%rcx
3e: 89 f6 mov %esi,%esi