INFO: task syz-executor.3:28271 blocked for more than 143 seconds.
Not tainted 5.16.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:24168 pid:28271 ppid: 8057 flags:0x00024004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
io_uring_cancel_generic+0x53d/0x690 fs/io_uring.c:9846
io_uring_files_cancel include/linux/io_uring.h:16 [inline]
do_exit+0x60c/0x2b40 kernel/exit.c:787
do_group_exit+0x125/0x310 kernel/exit.c:929
get_signal+0x47d/0x2220 kernel/signal.c:2852
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f79c640bae9
RSP: 002b:00007f79c3981218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f79c651ef68 RCX: 00007f79c640bae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f79c651ef68
RBP: 00007f79c651ef60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f79c651ef6c
R13: 00007fff360af46f R14: 00007f79c3981300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83b60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
2 locks held by kworker/u4:4/970:
1 lock held by in:imklog/6210:
#0: ffff888071db5270 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
2 locks held by agetty/6226:
#0: ffff888022d87098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90002d832e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
4 locks held by kworker/u4:9/10471:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc1-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:210 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
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: 10471 Comm: kworker/u4:9 Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:check_region_inline mm/kasan/generic.c:170 [inline]
RIP: 0010:kasan_check_range+0x12c/0x180 mm/kasan/generic.c:189
Code: 00 74 ef 49 8d 04 2c 48 85 d2 75 0b 48 89 da 48 29 c2 e9 55 ff ff ff 49 39 d2 75 17 49 0f be 02 41 83 e1 07 49 39 c1 7d 0a 5b 01 00 00 00 5d 41 5c c3 44 89 c2 e8 53 ef ff ff 5b 83 f0 01 5d
RSP: 0018:ffffc900029ff9d8 EFLAGS: 00000046
RAX: fffffbfff1fee341 RBX: ffffffff8bb83b60 RCX: ffffffff815c50fc
RDX: fffffbfff1fee341 RSI: 0000000000000008 RDI: ffffffff8ff71a00
RBP: fffffbfff1fee340 R08: 0000000000000000 R09: ffffffff8ff71a07
R10: fffffbfff1fee340 R11: 0000000000000000 R12: ffff888039f28ab0
R13: ffff888039f28000 R14: 0000000000020000 R15: 0000000000000002
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9b10abe000 CR3: 000000006f157000 CR4: 0000000000350ee0
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:199 [inline]
check_wait_context kernel/locking/lockdep.c:4701 [inline]
__lock_acquire+0x47c/0x54a0 kernel/locking/lockdep.c:4977
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
rcu_read_lock include/linux/rcupdate.h:688 [inline]
batadv_nc_process_nc_paths.part.0+0xec/0x3c0 net/batman-adv/network-coding.c:691
batadv_nc_process_nc_paths net/batman-adv/network-coding.c:683 [inline]
batadv_nc_worker+0xc46/0xfa0 net/batman-adv/network-coding.c:732
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 00 74 ef 49 add %dh,0x49(%rdi,%rbp,8)
4: 8d 04 2c lea (%rsp,%rbp,1),%eax
7: 48 85 d2 test %rdx,%rdx
a: 75 0b jne 0x17
c: 48 89 da mov %rbx,%rdx
f: 48 29 c2 sub %rax,%rdx
12: e9 55 ff ff ff jmpq 0xffffff6c
17: 49 39 d2 cmp %rdx,%r10
1a: 75 17 jne 0x33
1c: 49 0f be 02 movsbq (%r10),%rax
20: 41 83 e1 07 and $0x7,%r9d
24: 49 39 c1 cmp %rax,%r9
27: 7d 0a jge 0x33
29: 5b pop %rbx
* 2a: b8 01 00 00 00 mov $0x1,%eax <-- trapping instruction
2f: 5d pop %rbp
30: 41 5c pop %r12
32: c3 retq
33: 44 89 c2 mov %r8d,%edx
36: e8 53 ef ff ff callq 0xffffef8e
3b: 5b pop %rbx
3c: 83 f0 01 xor $0x1,%eax
3f: 5d pop %rbp