rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P29/1:b..l P7588/1:b..l P7887/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=81873, q=1076849 ncpus=2)
task:syz-executor state:R running task stack:22288 pid:7887 tgid:7887 ppid:7880 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7234
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7556
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8f0 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_release+0x2d7/0x3c0 kernel/locking/lockdep.c:5893
Code: 0b ca 11 00 00 00 00 eb b5 e8 b5 cb 2d 0a f7 c3 00 02 00 00 74 b9 65 48 8b 05 45 c6 c9 11 48 3b 44 24 28 75 44 fb 48 83 c4 30 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d c2 ee b7
RSP: 0018:ffffc900033a7088 EFLAGS: 00000286
RAX: ed39c6409ed7c000 RBX: 0000000000000206 RCX: 0000000000000046
RDX: 0000000000000002 RSI: ffffffff8e4ad94a RDI: ffffffff8c4bbe80
RBP: ffff888032768bf0 R08: ffffc900033a73d8 R09: 0000000000000000
R10: ffffc900033a71b8 R11: fffff52000674e39 R12: 0000000000000002
R13: 0000000000000002 R14: ffffffff8eb59c60 R15: ffff888032768000
rcu_lock_release include/linux/rcupdate.h:310 [inline]
rcu_read_unlock include/linux/rcupdate.h:871 [inline]
class_rcu_destructor include/linux/rcupdate.h:1183 [inline]
unwind_next_frame+0x1baa/0x2550 arch/x86/kernel/unwind_orc.c:709
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
save_stack+0x122/0x230 mm/page_owner.c:165
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xc1e/0xd10 mm/page_alloc.c:2950
__slab_free+0x274/0x2c0 mm/slub.c:5741
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_kmalloc+0x22/0xb0 mm/kasan/common.c:406
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5334 [inline]
__kmalloc_noprof+0x375/0x720 mm/slub.c:5359
_kmalloc_noprof include/linux/slab.h:992 [inline]
_kzalloc_noprof include/linux/slab.h:1309 [inline]
tomoyo_encode2 security/tomoyo/realpath.c:45 [inline]
tomoyo_encode+0x2ad/0x570 security/tomoyo/realpath.c:80
tomoyo_realpath_from_path+0x5fa/0x640 security/tomoyo/realpath.c:283
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_check_open_permission+0x229/0x470 security/tomoyo/file.c:776
security_file_open+0xa9/0x240 security/security.c:2739
do_dentry_open+0x4a0/0x1380 fs/open.c:924
vfs_open+0x3b/0x340 fs/open.c:1052
do_open fs/namei.c:4700 [inline]
path_openat+0x2e44/0x3830 fs/namei.c:4863
do_file_open+0x23e/0x4a0 fs/namei.c:4892
do_sys_openat2+0x115/0x200 fs/open.c:1368
do_sys_open fs/open.c:1374 [inline]
__do_sys_openat fs/open.c:1390 [inline]
__se_sys_openat fs/open.c:1385 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1385
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc63cb9d3fc
RSP: 002b:00007fc63cf4fd40 EFLAGS: 00000206 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00000000000001e4 RCX: 00007fc63cb9d3fc
RDX: 0000000000090800 RSI: 00007fc63cc34966 RDI: 00000000ffffff9c
RBP: 00007fc63cf4fdec R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 00000000000000c4
R13: 0000000000000000 R14: 000000000007114f R15: 00007fc63cf4fe40
task:kworker/u8:9 state:R running task stack:24744 pid:7588 tgid:7588 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: 0x0 (events_unbound)
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7234
preempt_schedule_notrace+0x57/0x90 kernel/sched/core.c:7506
preempt_schedule_notrace_thunk+0x16/0x30 arch/x86/entry/thunk.S:13
rcu_is_watching+0x7f/0xb0 kernel/rcu/tree.c:753
rcu_read_lock include/linux/rcupdate.h:841 [inline]
class_rcu_constructor include/linux/rcupdate.h:1183 [inline]
unwind_next_frame+0xbe/0x2550 arch/x86/kernel/unwind_orc.c:495
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
save_stack+0x122/0x230 mm/page_owner.c:165
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xc1e/0xd10 mm/page_alloc.c:2950
__slab_free+0x274/0x2c0 mm/slub.c:5741
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_kmalloc+0x22/0xb0 mm/kasan/common.c:406
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5334 [inline]
__kmalloc_node_track_caller_noprof+0x4c3/0x730 mm/slub.c:5471
kvasprintf+0xeb/0x1a0 lib/kasprintf.c:25
__kthread_create_on_node+0x1b3/0x3d0 kernel/kthread.c:491
kthread_create_on_node+0xeb/0x140 kernel/kthread.c:559
create_worker+0x2e3/0x7b0 kernel/workqueue.c:2861
maybe_create_worker kernel/workqueue.c:3121 [inline]
manage_workers kernel/workqueue.c:3198 [inline]
worker_thread+0x4c9/0xfb0 kernel/workqueue.c:3461
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
task:kworker/1:1 state:R running task stack:21056 pid:29 tgid:29 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events output_poll_execute
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7234
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7556
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8f0 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:118 [inline]
RIP: 0010:lock_release+0x53/0x3c0 kernel/locking/lockdep.c:5881
Code: 00 65 8b 05 f3 c8 c9 11 83 f8 08 0f 83 56 02 00 00 89 c0 48 0f a3 05 dc 5e b4 0e 73 0d e8 25 f9 08 00 84 c0 0f 84 94 02 00 00 <83> 3d d6 91 b4 0e 00 0f 84 1c 02 00 00 65 8b 05 79 0d ca 11 85 c0
RSP: 0018:ffffc90000a46f18 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffc90000a47038 RCX: 0000000080000001
RDX: ffffc90000a47001 RSI: ffffffff8c4bbe60 RDI: ffffffff8c4bbe20
RBP: 1ffffffff2266a01 R08: ffffc90000a477d0 R09: 0000000000000000
R10: ffffc90000a47078 R11: fffff52000148e11 R12: ffffc90000a40000
R13: ffffffff8177827f R14: ffffffff8eb59c60 R15: ffffc90000a477e0
rcu_lock_release include/linux/rcupdate.h:310 [inline]
rcu_read_unlock include/linux/rcupdate.h:871 [inline]
class_rcu_destructor include/linux/rcupdate.h:1183 [inline]
unwind_next_frame+0x1baa/0x2550 arch/x86/kernel/unwind_orc.c:709
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
save_stack+0x122/0x230 mm/page_owner.c:165
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xc1e/0xd10 mm/page_alloc.c:2950
__slab_free+0x274/0x2c0 mm/slub.c:5741
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4584 [inline]
slab_alloc_node mm/slub.c:4917 [inline]
__do_kmalloc_node mm/slub.c:5333 [inline]
__kmalloc_noprof+0x311/0x720 mm/slub.c:5359
_kmalloc_noprof include/linux/slab.h:992 [inline]
_kzalloc_noprof include/linux/slab.h:1309 [inline]
drm_client_firmware_config drivers/gpu/drm/drm_client_modeset.c:644 [inline]
drm_client_modeset_probe+0xca4/0x60c0 drivers/gpu/drm/drm_client_modeset.c:874
__drm_fb_helper_initial_config_and_unlock+0x10e/0x1b50 drivers/gpu/drm/drm_fb_helper.c:1717
drm_client_hotplug drivers/gpu/drm/drm_client_event.c:71 [inline]
drm_client_dev_hotplug+0x263/0x4c0 drivers/gpu/drm/drm_client_event.c:100
drm_kms_helper_hotplug_event drivers/gpu/drm/drm_probe_helper.c:736 [inline]
output_poll_execute+0x872/0x9b0 drivers/gpu/drm/drm_probe_helper.c:848
process_one_work kernel/workqueue.c:3322 [inline]
process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245