INFO: task syz-executor.3:25444 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:28272 pid:25444 ppid: 6537 flags:0x00000004
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
rwsem_down_read_slowpath+0x4c5/0x990 kernel/locking/rwsem.c:996
__down_read_common kernel/locking/rwsem.c:1224 [inline]
__down_read kernel/locking/rwsem.c:1233 [inline]
down_read+0xe2/0x440 kernel/locking/rwsem.c:1476
inode_lock_shared include/linux/fs.h:793 [inline]
open_last_lookups fs/namei.c:3349 [inline]
path_openat+0x155e/0x2750 fs/namei.c:3556
mm_update_next_owner+0x7a0/0x7a0 kernel/exit.c:420
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
1 lock held by in:imklog/6210:
#0: ffff88801b578870 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
1 lock held by systemd-udevd/12482:
1 lock held by syz-executor.3/25476:
=============================================
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: 44 Comm: kworker/u4:2 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:kasan_mem_to_shadow include/linux/kasan.h:55 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x41/0x180 mm/kasan/generic.c:189
Code: 0f 82 18 01 00 00 48 b8 ff ff ff ff ff 7f ff ff 48 39 c7 0f 86 05 01 00 00 49 83 e9 01 48 89 fd 48 b8 00 00 00 00 00 fc ff df <4d> 89 ca 48 c1 ed 03 49 c1 ea 03 48 01 c5 49 01 c2 48 89 e8 49 8d
RSP: 0018:ffffc9000114fba8 EFLAGS: 00000286
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff815cb137
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8d912010
RBP: ffffffff8d912010 R08: 0000000000000000 R09: ffffffff8d912017
R10: ffffffff88e00d11 R11: 0000000000000000 R12: ffffffff8bb83b60
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000221
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f47950f6000 CR3: 000000007062b000 CR4: 0000000000350ef0
Call Trace:
instrument_atomic_read include/linux/instrumented.h:71 [inline]
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
cpumask_test_cpu include/linux/cpumask.h:344 [inline]
cpu_online include/linux/cpumask.h:895 [inline]
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0x457/0x720 kernel/locking/lockdep.c:5648
rcu_lock_release include/linux/rcupdate.h:273 [inline]
rcu_read_unlock include/linux/rcupdate.h:721 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:416 [inline]
batadv_nc_worker+0x86b/0xfa0 net/batman-adv/network-coding.c:723
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: 0f 82 18 01 00 00 jb 0x11e
6: 48 b8 ff ff ff ff ff movabs $0xffff7fffffffffff,%rax
d: 7f ff ff
10: 48 39 c7 cmp %rax,%rdi
13: 0f 86 05 01 00 00 jbe 0x11e
19: 49 83 e9 01 sub $0x1,%r9
1d: 48 89 fd mov %rdi,%rbp
20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
27: fc ff df
* 2a: 4d 89 ca mov %r9,%r10 <-- trapping instruction
2d: 48 c1 ed 03 shr $0x3,%rbp
31: 49 c1 ea 03 shr $0x3,%r10
35: 48 01 c5 add %rax,%rbp
38: 49 01 c2 add %rax,%r10
3b: 48 89 e8 mov %rbp,%rax
3e: 49 rex.WB
3f: 8d .byte 0x8d