INFO: task syz-executor.5:4220 blocked for more than 143 seconds.
Not tainted 5.16.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:25736 pid: 4220 ppid: 3646 flags:0x00004002
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
drm_gem_object_handle_put_unlocked+0x90/0x320 drivers/gpu/drm/drm_gem.c:230
drm_gem_object_release_handle+0xe3/0x110 drivers/gpu/drm/drm_gem.c:258
idr_for_each+0x113/0x220 lib/idr.c:208
drm_gem_release+0x22/0x30 drivers/gpu/drm/drm_gem.c:930
drm_file_free.part.0+0x805/0xb80 drivers/gpu/drm/drm_file.c:281
drm_file_free drivers/gpu/drm/drm_file.c:248 [inline]
drm_close_helper.isra.0+0x17d/0x1f0 drivers/gpu/drm/drm_file.c:308
drm_release+0x1e6/0x530 drivers/gpu/drm/drm_file.c:495
__fput+0x286/0x9f0 fs/file_table.c:280
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
exit_task_work include/linux/task_work.h:32 [inline]
do_exit+0xc14/0x2b40 kernel/exit.c:832
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: 0033:0x7fe30b3bde99
RSP: 002b:00007fe309d33218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fe30b4d0f68 RCX: 00007fe30b3bde99
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fe30b4d0f68
RBP: 00007fe30b4d0f60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe30b4d0f6c
R13: 00007fe30ba04b1f R14: 00007fe309d33300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8bb83de0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
2 locks held by getty/3276:
#0: ffff88814b20b098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90002b962e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
3 locks held by kworker/u4:3/7401:
1 lock held by syz-executor.0/18253:
#0: ffff888146f14c70 (&dev->object_name_lock){+.+.}-{3:3}, at: drm_gem_object_handle_put_unlocked+0x90/0x320 drivers/gpu/drm/drm_gem.c:230
1 lock held by syz-executor.0/18564:
#0: ffff888146f14c70 (&dev->object_name_lock){+.+.}-{3:3}, at: drm_gem_object_handle_put_unlocked+0x90/0x320 drivers/gpu/drm/drm_gem.c:230
3 locks held by syz-executor.3/4217:
#0: ffff88801d34b3d8 (&prime_fpriv->lock){+.+.}-{3:3}, at: drm_gem_prime_fd_to_handle+0x5e/0x550 drivers/gpu/drm/drm_prime.c:308
#1: ffff888146f14c70 (&dev->object_name_lock){+.+.}-{3:3}, at: drm_gem_prime_fd_to_handle+0x1b9/0x550 drivers/gpu/drm/drm_prime.c:316
#2: ffff8880867cc298 (&shmem->pages_lock){+.+.}-{3:3}, at: drm_gem_shmem_get_pages+0x56/0x250 drivers/gpu/drm/drm_gem_shmem_helper.c:203
1 lock held by syz-executor.5/4220:
#0: ffff888146f14c70 (&dev->object_name_lock){+.+.}-{3:3}, at: drm_gem_object_handle_put_unlocked+0x90/0x320 drivers/gpu/drm/drm_gem.c:230
2 locks held by syz-executor.0/4553:
#0: ffff888018b7c3d8 (&prime_fpriv->lock){+.+.}-{3:3}, at: drm_gem_prime_fd_to_handle+0x5e/0x550 drivers/gpu/drm/drm_prime.c:308
#1: ffff888146f14c70 (&dev->object_name_lock){+.+.}-{3:3}, at: drm_gem_prime_fd_to_handle+0x1b9/0x550 drivers/gpu/drm/drm_prime.c:316
2 locks held by syz-executor.5/4884:
#0: ffff888013bcf3d8 (&prime_fpriv->lock){+.+.}-{3:3}, at: drm_gem_prime_fd_to_handle+0x5e/0x550 drivers/gpu/drm/drm_prime.c:308
#1: ffff888146f14c70 (&dev->object_name_lock){+.+.}-{3:3}, at: drm_gem_prime_fd_to_handle+0x1b9/0x550 drivers/gpu/drm/drm_prime.c:316
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.16.0-rc5-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: 7428 Comm: kworker/u4:17 Not tainted 5.16.0-rc5-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_check_range+0x132/0x180 mm/kasan/generic.c:190
Code: 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 b8 01 00 00 00 5d <41> 5c c3 44 89 c2 e8 53 ef ff ff 5b 83 f0 01 5d 41 5c c3 b8 01 00
RSP: 0018:ffffc9000c9bf9e0 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 0000000000000703 RCX: ffffffff815c7662
RDX: fffffbfff1fee95d RSI: 0000000000000008 RDI: ffffffff8ff74ae0
RBP: 0000000000000004 R08: 0000000000000000 R09: ffffffff8ff74ae7
R10: fffffbfff1fee95c R11: 0000000000000000 R12: ffff888019f244b0
R13: ffff888019f23a00 R14: 0000000000000000 R15: 1498e6b2214c4b69
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564521ed8600 CR3: 000000007f84c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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]
__lock_acquire+0x1442/0x54a0 kernel/locking/lockdep.c:5023
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: 2c 48 sub $0x48,%al
2: 85 d2 test %edx,%edx
4: 75 0b jne 0x11
6: 48 89 da mov %rbx,%rdx
9: 48 29 c2 sub %rax,%rdx
c: e9 55 ff ff ff jmpq 0xffffff66
11: 49 39 d2 cmp %rdx,%r10
14: 75 17 jne 0x2d
16: 49 0f be 02 movsbq (%r10),%rax
1a: 41 83 e1 07 and $0x7,%r9d
1e: 49 39 c1 cmp %rax,%r9
21: 7d 0a jge 0x2d
23: 5b pop %rbx
24: b8 01 00 00 00 mov $0x1,%eax
29: 5d pop %rbp
* 2a: 41 5c pop %r12 <-- trapping instruction
2c: c3 retq
2d: 44 89 c2 mov %r8d,%edx
30: e8 53 ef ff ff callq 0xffffef88
35: 5b pop %rbx
36: 83 f0 01 xor $0x1,%eax
39: 5d pop %rbp
3a: 41 5c pop %r12
3c: c3 retq
3d: b8 .byte 0xb8
3e: 01 00 add %eax,(%rax)