rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P27550/1:b..l P5823/3:b..l P25335/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=199001, q=932370 ncpus=2)
task:syz-executor state:R running task stack:20968 pid:25335 tgid:25335 ppid:25320 task_flags:0x400140 flags:0x00080001
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6929
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7256
irqentry_exit+0x6f/0x90 kernel/entry/common.c:211
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:unwind_next_frame+0x1174/0x2390 arch/x86/kernel/unwind_orc.c:641
Code: 8b 14 24 4d 89 65 00 41 0f b6 04 2f 84 c0 0f 85 f9 0f 00 00 c6 03 00 4c 8b 64 24 10 4c 8b 7c 24 28 48 8b 44 24 40 0f b6 04 28 <84> c0 0f 85 8a 0d 00 00 41 0f b6 04 2f 84 c0 0f 85 a1 0d 00 00 0f
RSP: 0018:ffffc9000398f418 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffc9000398f520 RCX: 0000000000000000
RDX: ffffffff8fedb210 RSI: 0000000000000000 RDI: ffffc9000398f548
RBP: dffffc0000000000 R08: ffffc9000398f547 R09: ffffc9000398f538
R10: dffffc0000000000 R11: fffff52000731ea9 R12: ffffc9000398f620
R13: ffffc9000398f538 R14: ffffc9000398f4e8 R15: 1ffffffff1fdb642
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
save_stack+0xf5/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:308
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1394 [inline]
__free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906
__slab_free+0x2e7/0x390 mm/slub.c:5923
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_kmalloc+0x22/0xb0 mm/kasan/common.c:408
kasan_kmalloc include/linux/kasan.h:262 [inline]
__do_kmalloc_node mm/slub.c:5603 [inline]
__kmalloc_noprof+0x411/0x7f0 mm/slub.c:5615
kmalloc_noprof include/linux/slab.h:961 [inline]
kzalloc_noprof include/linux/slab.h:1094 [inline]
tomoyo_encode2 security/tomoyo/realpath.c:45 [inline]
tomoyo_encode+0x28b/0x550 security/tomoyo/realpath.c:80
tomoyo_realpath_from_path+0x58d/0x5d0 security/tomoyo/realpath.c:283
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x213/0x4b0 security/tomoyo/file.c:822
tomoyo_sb_umount+0x9c/0xe0 security/tomoyo/tomoyo.c:430
security_sb_umount+0xbb/0x290 security/security.c:1623
do_umount fs/namespace.c:1869 [inline]
path_umount+0x38e/0xb70 fs/namespace.c:2041
ksys_umount fs/namespace.c:2064 [inline]
__do_sys_umount fs/namespace.c:2069 [inline]
__se_sys_umount fs/namespace.c:2067 [inline]
__x64_sys_umount+0x122/0x160 fs/namespace.c:2067
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb2091901f7
RSP: 002b:00007fff6a297de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 00007fb209211d7d RCX: 00007fb2091901f7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff6a297ea0
RBP: 00007fff6a297ea0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff6a298f30
R13: 00007fb209211d7d R14: 00000000002418a6 R15: 00007fff6a298f70
task:syz-executor state:R running task stack:21368 pid:5823 tgid:5823 ppid:5822 task_flags:0x400100 flags:0x00080001
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6929
preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:7113
preempt_schedule+0xae/0xc0 kernel/sched/core.c:7137
preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
__local_bh_enable_ip+0x13e/0x1c0 kernel/softirq.c:457
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:910 [inline]
__dev_queue_xmit+0x1d79/0x3b50 net/core/dev.c:4790
neigh_output include/net/neighbour.h:547 [inline]
ip_finish_output2+0xd40/0x1160 net/ipv4/ip_output.c:237
NF_HOOK_COND include/linux/netfilter.h:307 [inline]
ip_output+0x29f/0x450 net/ipv4/ip_output.c:438
ip_local_out net/ipv4/ip_output.c:131 [inline]
__ip_queue_xmit+0x118d/0x1c30 net/ipv4/ip_output.c:534
__tcp_transmit_skb+0x24f6/0x3aa0 net/ipv4/tcp_output.c:1628
tcp_transmit_skb net/ipv4/tcp_output.c:1646 [inline]
tcp_write_xmit+0x19c1/0x69a0 net/ipv4/tcp_output.c:2988
__tcp_push_pending_frames+0x97/0x360 net/ipv4/tcp_output.c:3171
tcp_sendmsg_locked+0x4888/0x5540 net/ipv4/tcp.c:1376
tcp_sendmsg+0x2f/0x50 net/ipv4/tcp.c:1413
sock_sendmsg_nosec net/socket.c:727 [inline]
__sock_sendmsg+0x19c/0x270 net/socket.c:742
sock_write_iter+0x279/0x360 net/socket.c:1195
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x5c9/0xb30 fs/read_write.c:686
ksys_write+0x145/0x250 fs/read_write.c:738
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fab0218d940
RSP: 002b:00007ffe2c9b8558 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000861a5e380 RCX: 00007fab0218d940
RDX: 000000000000d8a0 RSI: 00007faafbdf2760 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000007 R09: 00000000005ffde8
R10: 286559dc47542c79 R11: 0000000000000202 R12: 000000000000d8a0
R13: 000055557d44dd90 R14: 00007ffe2c9b8a60 R15: 00007faafbdf2760
task:kworker/u8:6 state:R running task stack:28168 pid:27550 tgid:27550 ppid:2 task_flags:0x4208060 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6929
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7256
irqentry_exit+0x6f/0x90 kernel/entry/common.c:211
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x175/0x360 kernel/locking/lockdep.c:5872
Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 db 3e ad 10 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc9000b1c7560 EFLAGS: 00000206
RAX: 973422d4d3f9e900 RBX: 0000000000000000 RCX: 973422d4d3f9e900
RDX: 0000000000000000 RSI: ffffffff8d6f525f RDI: ffffffff8b9eea60
RBP: ffffffff822d7cee R08: 0000000000000000 R09: ffffffff822d7cee
R10: 000000000000000f R11: ffffffff81aaf950 R12: 0000000000000002
R13: ffffffff8dd3b160 R14: 0000000000000000 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:841 [inline]
__update_page_owner_free_handle+0x4b/0x470 mm/page_owner.c:271
__reset_page_owner+0x85/0x1f0 mm/page_owner.c:309
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1394 [inline]
__free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906
discard_slab mm/slub.c:3301 [inline]
__put_partials+0x146/0x170 mm/slub.c:3848
put_cpu_partial+0x1f2/0x2e0 mm/slub.c:3923
__slab_free+0x2b9/0x390 mm/slub.c:5882
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:352
kasan_slab_alloc include/linux/kasan.h:252 [inline]
slab_post_alloc_hook mm/slub.c:4946 [inline]
slab_alloc_node mm/slub.c:5245 [inline]
__kmalloc_cache_noprof+0x36f/0x6f0 mm/slub.c:5719
kmalloc_noprof include/linux/slab.h:957 [inline]
__kthread_create_on_node+0xef/0x3e0 kernel/kthread.c:510
kthread_create_on_node+0xdd/0x130 kernel/kthread.c:587
create_worker+0x299/0x720 kernel/workqueue.c:2802
maybe_create_worker kernel/workqueue.c:3063 [inline]
manage_workers kernel/workqueue.c:3140 [inline]
worker_thread+0x33e/0xda0 kernel/workqueue.c:3402
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x439/0x7d0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245