INFO: task syz-executor.2:11771 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.2 state:D stack:28464 pid:11771 ppid: 6710 flags:0x20004000
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
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
io_uring_del_tctx_node+0x109/0x20a fs/io_uring.c:9746
io_uring_clean_tctx fs/io_uring.c:9762 [inline]
io_uring_cancel_generic+0x5d5/0x690 fs/io_uring.c:9851
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:2830
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_fast_syscall_32+0x72/0xf0 arch/x86/entry/common.c:181
do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf6eba549
RSP: 002b:00000000f449367c EFLAGS: 00000296 ORIG_RAX: 00000000000000f0
RAX: fffffffffffffe00 RBX: 00000000f7017024 RCX: 0000000000000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000f7017028
RBP: 0000000000000081 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Showing all locks held in the system:
5 locks held by kworker/u4:1/10:
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
1 lock held by in:imklog/6234:
#0: ffff88802004dc70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
3 locks held by syz-executor.2/11738:
1 lock held by syz-executor.2/11771:
#0: ffff888070d3b0a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_uring_del_tctx_node+0x109/0x20a fs/io_uring.c:9746
4 locks held by syz-executor.2/11775:
=============================================
NMI backtrace for cpu 1
CPU: 1 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 10 Comm: kworker/u4:1 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_tt_purge
RIP: 0010:mark_held_locks+0x0/0xe0 kernel/locking/lockdep.c:4194
Code: 44 24 08 e8 92 0a 62 00 48 8b 44 24 08 e9 f9 eb ff ff 48 c7 c7 48 58 91 8d e8 6c 0a 62 00 e9 59 f1 ff ff 0f 1f 80 00 00 00 00 <48> b8 00 00 00 00 00 fc ff df 41 56 41 55 41 54 49 89 fc 48 81 c7
RSP: 0018:ffffc90000cf7c50 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffff888010e79d00 RCX: 1ffffffff1ff92ee
RDX: 1ffff110021cf4e8 RSI: 0000000000000006 RDI: ffff888010e79d00
RBP: ffff888010e79d00 R08: 0000000000000000 R09: ffffffff8ff71aef
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88802faad1f0
R13: ffff88802faad208 R14: fffffbfff1701e30 R15: 0000000000000400
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f34dfd1c000 CR3: 000000007a853000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__trace_hardirqs_on_caller kernel/locking/lockdep.c:4232 [inline]
lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4292 [inline]
lockdep_hardirqs_on_prepare+0x28b/0x400 kernel/locking/lockdep.c:4244
trace_hardirqs_on+0x5b/0x1c0 kernel/trace/trace_preemptirq.c:49
__local_bh_enable_ip+0xa0/0x120 kernel/softirq.c:388
spin_unlock_bh include/linux/spinlock.h:394 [inline]
batadv_tt_roam_purge net/batman-adv/translation-table.c:3447 [inline]
batadv_tt_purge+0x8a2/0xaf0 net/batman-adv/translation-table.c:3564
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: 44 24 08 rex.R and $0x8,%al
3: e8 92 0a 62 00 callq 0x620a9a
8: 48 8b 44 24 08 mov 0x8(%rsp),%rax
d: e9 f9 eb ff ff jmpq 0xffffec0b
12: 48 c7 c7 48 58 91 8d mov $0xffffffff8d915848,%rdi
19: e8 6c 0a 62 00 callq 0x620a8a
1e: e9 59 f1 ff ff jmpq 0xfffff17c
23: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
* 2a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction
31: fc ff df
34: 41 56 push %r14
36: 41 55 push %r13
38: 41 54 push %r12
3a: 49 89 fc mov %rdi,%r12
3d: 48 rex.W
3e: 81 .byte 0x81
3f: c7 .byte 0xc7