INFO: task syz-executor.0:16541 blocked for more than 143 seconds.
Not tainted 5.18.0-rc1-syzkaller-00037-g42e7a03d3bad #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27600 pid:16541 ppid: 3649 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6382
schedule+0xd2/0x1f0 kernel/sched/core.c:6454
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
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:10599 [inline]
io_uring_cancel_generic+0x60b/0x695 fs/io_uring.c:10669
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: 0033:0x7fced9e89049
RSP: 002b:00007fcedafe2218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fced9f9bf68 RCX: 00007fced9e89049
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fced9f9bf68
RBP: 00007fced9f9bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fced9f9bf6c
R13: 00007fceda4cfb1f R14: 00007fcedafe2300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd81ee0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6467
2 locks held by getty/3274:
#0: ffff88814cad8098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002e732e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcea/0x1230 drivers/tty/n_tty.c:2075
2 locks held by kworker/u4:17/14937:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.18.0-rc1-syzkaller-00037-g42e7a03d3bad #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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5540 Comm: kworker/u4:12 Not tainted 5.18.0-rc1-syzkaller-00037-g42e7a03d3bad #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:check_preemption_disabled+0xa/0x170 lib/smp_processor_id.c:13
Code: f8 65 48 8b 3c 25 00 70 02 00 e8 01 0f fa f7 eb 99 0f 1f 44 00 00 0f 0b e9 23 ff ff ff cc cc cc 41 56 41 55 49 89 f5 41 54 55 <48> 89 fd 53 0f 1f 44 00 00 65 44 8b 25 a5 64 a2 76 65 8b 1d 8e ba
RSP: 0018:ffffc900032bfb98 EFLAGS: 00000046
RAX: 0000000000000002 RBX: e47a7ea22345a5b5 RCX: ffffc900032bfc10
RDX: 1ffff1100f05b14a RSI: ffffffff89cc5b20 RDI: ffffffff8a26b7e0
RBP: 1ffff92000657f7a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000002
R13: ffffffff89cc5b20 R14: ffff8880782d8a58 R15: ffff8880782d8000
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f15d0b226c8 CR3: 000000000ba8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lockdep_recursion_finish kernel/locking/lockdep.c:436 [inline]
lock_release+0x3bb/0x720 kernel/locking/lockdep.c:5663
rcu_lock_release include/linux/rcupdate.h:273 [inline]
rcu_read_unlock include/linux/rcupdate.h:727 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:412 [inline]
batadv_nc_worker+0x86b/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: f8 clc
1: 65 48 8b 3c 25 00 70 mov %gs:0x27000,%rdi
8: 02 00
a: e8 01 0f fa f7 callq 0xf7fa0f10
f: eb 99 jmp 0xffffffaa
11: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
16: 0f 0b ud2
18: e9 23 ff ff ff jmpq 0xffffff40
1d: cc int3
1e: cc int3
1f: cc int3
20: 41 56 push %r14
22: 41 55 push %r13
24: 49 89 f5 mov %rsi,%r13
27: 41 54 push %r12
29: 55 push %rbp
* 2a: 48 89 fd mov %rdi,%rbp <-- trapping instruction
2d: 53 push %rbx
2e: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
33: 65 44 8b 25 a5 64 a2 mov %gs:0x76a264a5(%rip),%r12d # 0x76a264e0
3a: 76
3b: 65 gs
3c: 8b .byte 0x8b
3d: 1d .byte 0x1d
3e: 8e .byte 0x8e
3f: ba .byte 0xba