INFO: task syz-executor.0:28556 blocked for more than 143 seconds.
Not tainted 5.18.0-rc5-next-20220506-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27072 pid:28556 ppid: 3705 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5109 [inline]
__schedule+0xa9a/0x4cc0 kernel/sched/core.c:6424
schedule+0xd2/0x1f0 kernel/sched/core.c:6496
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1883
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x378/0x530 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:11240 [inline]
io_uring_cancel_generic+0x538/0x5bc fs/io_uring.c:11310
io_uring_files_cancel include/linux/io_uring.h:44 [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:2875
arch_do_signal_or_restart+0x82/0x20f0 arch/x86/kernel/signal.c:869
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+0x19/0x50 kernel/entry/common.c:294
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f7d3ce890e9
RSP: 002b:00007f7d3df4b168 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 0000000000000dc9 RBX: 00007f7d3cf9bf60 RCX: 00007f7d3ce890e9
RDX: 0000000000000000 RSI: 0000000000000dc9 RDI: 0000000000000004
RBP: 00007f7d3df4b1d0 R08: 0000000000000000 R09: 0040000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffdbe19277f R14: 00007f7d3df4b300 R15: 0000000000022000
INFO: task syz-executor.2:28568 blocked for more than 143 seconds.
Not tainted 5.18.0-rc5-next-20220506-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:27072 pid:28568 ppid: 26733 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5109 [inline]
__schedule+0xa9a/0x4cc0 kernel/sched/core.c:6424
schedule+0xd2/0x1f0 kernel/sched/core.c:6496
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1883
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x378/0x530 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:11240 [inline]
io_uring_cancel_generic+0x538/0x5bc fs/io_uring.c:11310
io_uring_files_cancel include/linux/io_uring.h:44 [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:2875
arch_do_signal_or_restart+0x82/0x20f0 arch/x86/kernel/signal.c:869
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+0x19/0x50 kernel/entry/common.c:294
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f0df62890e9
RSP: 002b:00007f0df73c1168 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 0000000000000dc9 RBX: 00007f0df639bf60 RCX: 00007f0df62890e9
RDX: 0000000000000000 RSI: 0000000000000dc9 RDI: 0000000000000004
RBP: 00007f0df73c11d0 R08: 0000000000000000 R09: 0040000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffebd6f3c2f R14: 00007f0df73c1300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8bd84f50 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:502
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8bd84bd0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:502
1 lock held by khungtaskd/29:
#0: ffffffff8bd85aa0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491
2 locks held by getty/3364:
#0: ffff888025176098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002ce62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 drivers/tty/n_tty.c:2118
4 locks held by iou-wrk-28556/28561:
1 lock held by iou-wrk-28568/28571:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 5.18.0-rc5-next-20220506-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+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:220 [inline]
watchdog+0xc22/0xf90 kernel/hung_task.c:378
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: 1087 Comm: kworker/u4:6 Not tainted 5.18.0-rc5-next-20220506-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:lockdep_recursion_finish kernel/locking/lockdep.c:466 [inline]
RIP: 0010:lock_acquire kernel/locking/lockdep.c:5667 [inline]
RIP: 0010:lock_acquire+0x1c8/0x570 kernel/locking/lockdep.c:5630
Code: 41 0f 94 c1 45 0f b6 c9 e8 b5 94 ff ff 48 c7 c7 40 74 cc 89 48 83 c4 20 e8 95 9d 15 08 b8 ff ff ff ff 65 0f c1 05 00 39 a4 7e <83> f8 01 0f 85 e8 02 00 00 9c 58 f6 c4 02 0f 85 fb 02 00 00 48 83
RSP: 0018:ffffc90004d5fb98 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 1ffff920009abf75 RCX: 4018c01f0d9780c3
RDX: 1ffff11003aad4fb RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff9009e887
R10: fffffbfff2013d10 R11: 0000000000000001 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8bd85aa0 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc335900a0 CR3: 000000001dfc6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_acquire include/linux/rcupdate.h:270 [inline]
rcu_read_lock include/linux/rcupdate.h:696 [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: 41 0f 94 c1 sete %r9b
4: 45 0f b6 c9 movzbl %r9b,%r9d
8: e8 b5 94 ff ff callq 0xffff94c2
d: 48 c7 c7 40 74 cc 89 mov $0xffffffff89cc7440,%rdi
14: 48 83 c4 20 add $0x20,%rsp
18: e8 95 9d 15 08 callq 0x8159db2
1d: b8 ff ff ff ff mov $0xffffffff,%eax
22: 65 0f c1 05 00 39 a4 xadd %eax,%gs:0x7ea43900(%rip) # 0x7ea4392a
29: 7e
* 2a: 83 f8 01 cmp $0x1,%eax <-- trapping instruction
2d: 0f 85 e8 02 00 00 jne 0x31b
33: 9c pushfq
34: 58 pop %rax
35: f6 c4 02 test $0x2,%ah
38: 0f 85 fb 02 00 00 jne 0x339
3e: 48 rex.W
3f: 83 .byte 0x83