INFO: task syz-executor.5:18729 blocked for more than 143 seconds.
Not tainted 5.19.0-rc4-syzkaller-00125-ga175eca0f3d7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:29008 pid:18729 ppid: 3636 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5146 [inline]
__schedule+0xa00/0x4b50 kernel/sched/core.c:6458
schedule+0xd2/0x1f0 kernel/sched/core.c:6530
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6589
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa70/0x1350 kernel/locking/mutex.c:747
misc_open+0x5f/0x4a0 drivers/char/misc.c:107
chrdev_open+0x266/0x770 fs/char_dev.c:414
do_dentry_open+0x4a1/0x11f0 fs/open.c:848
do_open fs/namei.c:3520 [inline]
path_openat+0x1c71/0x2910 fs/namei.c:3653
do_filp_open+0x1aa/0x400 fs/namei.c:3680
do_sys_openat2+0x16d/0x4c0 fs/open.c:1278
do_sys_open fs/open.c:1294 [inline]
__do_sys_openat fs/open.c:1310 [inline]
__se_sys_openat fs/open.c:1305 [inline]
__x64_sys_openat+0x13f/0x1f0 fs/open.c:1305
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7efcf7a89109
RSP: 002b:00007efcf69fe168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007efcf7b9c030 RCX: 00007efcf7a89109
RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffffffffff9c
RBP: 00007efcf7ae305d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffee3a28c2f R14: 00007efcf69fe300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd83b60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491
2 locks held by acpid/2962:
#0: ffff88801fc54158 (&joydev->mutex){+.+.}-{3:3}, at: joydev_close_device drivers/input/joydev.c:220 [inline]
#0: ffff88801fc54158 (&joydev->mutex){+.+.}-{3:3}, at: joydev_release+0x187/0x290 drivers/input/joydev.c:252
#1: ffff888076b162c0 (&dev->mutex#2){+.+.}-{3:3}, at: input_close_device+0x42/0x1f0 drivers/input/input.c:726
2 locks held by getty/3287:
#0: ffff888017fcf098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90001c182e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 drivers/tty/n_tty.c:2124
3 locks held by udevd/3649:
#0: ffff888026dcb488 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:197 [inline]
#0: ffff888026dcb488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x189/0x6e0 fs/kernfs/file.c:236
#1: ffff8880779d9870 (kn->active#56){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline]
#1: ffff8880779d9870 (kn->active#56){++++}-{0:0}, at: kernfs_fop_read_iter+0x1ac/0x6e0 fs/kernfs/file.c:236
#2: ffff888035b76190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:840 [inline]
#2: ffff888035b76190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873
3 locks held by udevd/3653:
#0: ffff888074b68088 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:197 [inline]
#0: ffff888074b68088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x189/0x6e0 fs/kernfs/file.c:236
#1: ffff88807d99f6a0 (kn->active#56){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline]
#1: ffff88807d99f6a0 (kn->active#56){++++}-{0:0}, at: kernfs_fop_read_iter+0x1ac/0x6e0 fs/kernfs/file.c:236
#2: ffff888030e38190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:840 [inline]
#2: ffff888030e38190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873
7 locks held by kworker/0:9/3690:
#0: ffff8880176ccd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8880176ccd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8880176ccd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff8880176ccd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff8880176ccd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff8880176ccd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc900038efda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
#2: ffff8881477df190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#2: ffff8881477df190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4690 drivers/usb/core/hub.c:5691
#3: ffff888030e38190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#3: ffff888030e38190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x530 drivers/base/dd.c:964
#4: ffff888079d9e118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#4: ffff888079d9e118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x530 drivers/base/dd.c:964
#5: ffffffff8cea6fc8 (input_mutex){+.+.}-{3:3}, at: input_register_device.cold+0x34/0x303 drivers/input/input.c:2378
#6: ffff888076b162c0 (&dev->mutex#2){+.+.}-{3:3}, at: input_register_handle+0x6d/0x510 drivers/input/input.c:2544
6 locks held by kworker/1:7/3726:
#0: ffff8880176ccd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8880176ccd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8880176ccd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff8880176ccd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff8880176ccd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff8880176ccd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc90003fffda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
#2: ffff8881476de190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#2: ffff8881476de190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4690 drivers/usb/core/hub.c:5691
#3: ffff888035b76190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#3: ffff888035b76190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x530 drivers/base/dd.c:964
#4: ffff88807c0bd118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#4: ffff88807c0bd118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x530 drivers/base/dd.c:964
#5: ffffffff8cea6fc8 (input_mutex){+.+.}-{3:3}, at: input_register_device.cold+0x34/0x303 drivers/input/input.c:2378
2 locks held by syz-executor.2/18718:
#0: ffffffff8c826a28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5f/0x4a0 drivers/char/misc.c:107
#1: ffffffff8bc50be8 (system_transition_mutex){+.+.}-{3:3}, at: snapshot_open+0x3b/0x2a0 kernel/power/user.c:54
1 lock held by syz-executor.5/18729:
#0: ffffffff8c826a28 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x5f/0x4a0 drivers/char/misc.c:107
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.19.0-rc4-syzkaller-00125-ga175eca0f3d7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
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:212 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:369
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 12230 Comm: kworker/u4:26 Not tainted 5.19.0-rc4-syzkaller-00125-ga175eca0f3d7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
Workqueue: bat_events batadv_nc_worker
RIP: 0010:hlock_class kernel/locking/lockdep.c:227 [inline]
RIP: 0010:__lock_acquire+0x145a/0x5660 kernel/locking/lockdep.c:5049
Code: f8 66 81 e3 ff 1f 0f b7 db be 08 00 00 00 48 89 d8 48 c1 f8 06 48 8d 3c c5 00 b9 67 90 e8 fe 8e 68 00 48 0f a3 1d f6 89 0a 0f <0f> 83 2c 06 00 00 48 8d 1c 5b 48 c1 e3 06 48 81 c3 20 bd 67 90 48
RSP: 0018:ffffc90004807a38 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 0000000000000748 RCX: ffffffff815d2f02
RDX: fffffbfff20cf73e RSI: 0000000000000008 RDI: ffffffff9067b9e8
RBP: 0000000000000004 R08: 0000000000000000 R09: ffffffff9067b9ef
R10: fffffbfff20cf73d R11: 0000000000000001 R12: ffff88803f794cb0
R13: ffff88803f794200 R14: 0000000000000000 R15: 626ea1c19c6b862b
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00e2802c8 CR3: 000000000ba8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5665 [inline]
lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
rcu_lock_acquire include/linux/rcupdate.h:269 [inline]
rcu_read_lock include/linux/rcupdate.h:695 [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:302
----------------
Code disassembly (best guess):
0: f8 clc
1: 66 81 e3 ff 1f and $0x1fff,%bx
6: 0f b7 db movzwl %bx,%ebx
9: be 08 00 00 00 mov $0x8,%esi
e: 48 89 d8 mov %rbx,%rax
11: 48 c1 f8 06 sar $0x6,%rax
15: 48 8d 3c c5 00 b9 67 lea -0x6f984700(,%rax,8),%rdi
1c: 90
1d: e8 fe 8e 68 00 callq 0x688f20
22: 48 0f a3 1d f6 89 0a bt %rbx,0xf0a89f6(%rip) # 0xf0a8a20
29: 0f
* 2a: 0f 83 2c 06 00 00 jae 0x65c <-- trapping instruction
30: 48 8d 1c 5b lea (%rbx,%rbx,2),%rbx
34: 48 c1 e3 06 shl $0x6,%rbx
38: 48 81 c3 20 bd 67 90 add $0xffffffff9067bd20,%rbx
3f: 48 rex.W