rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5186/1:b..l P5841/1:b..l P5855/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=14109, q=637002 ncpus=2)
task:syz-executor state:R running task stack:23752 pid:5855 tgid:5855 ppid:5848 task_flags:0x400140 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x116a/0x5de0 kernel/sched/core.c:6785
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7108
irqentry_exit+0x36/0x90 kernel/entry/common.c:307
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__orc_find+0x9/0xf0 arch/x86/kernel/unwind_orc.c:87
Code: 90 48 8b 07 e9 18 06 19 0a 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 41 55 49 89 cd <89> d1 41 54 4c 8d 64 8f fc 55 53 48 83 ec 08 85 d2 0f 84 99 00 00
RSP: 0018:ffffc9000406f550 EFLAGS: 00000202
RAX: ffffffff913ca32a RBX: 0000000000000001 RCX: ffffffff816aed03
RDX: 0000000000000001 RSI: ffffffff913ca32a RDI: ffffffff90b90018
RBP: ffffc9000406f678 R08: ffffffff913ca330 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000006aed R12: ffffc9000406f680
R13: ffffffff816aed03 R14: ffffc9000406f665 R15: ffffffff816aed03
orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
unwind_next_frame+0x2ec/0x20a0 arch/x86/kernel/unwind_orc.c:494
__unwind_start+0x45f/0x7f0 arch/x86/kernel/unwind_orc.c:758
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0x73/0x100 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
save_stack+0x160/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x84/0x1a0 mm/page_owner.c:308
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0x7fe/0x1180 mm/page_alloc.c:2706
discard_slab mm/slub.c:2717 [inline]
__put_partials+0x16d/0x1c0 mm/slub.c:3186
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4d/0x120 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4148 [inline]
slab_alloc_node mm/slub.c:4197 [inline]
kmem_cache_alloc_noprof+0x1cb/0x3b0 mm/slub.c:4204
lsm_file_alloc security/security.c:733 [inline]
security_file_alloc+0x34/0x2b0 security/security.c:2858
init_file+0x93/0x4c0 fs/file_table.c:156
alloc_empty_file+0x73/0x1e0 fs/file_table.c:238
path_openat+0xda/0x2cb0 fs/namei.c:4041
do_filp_open+0x20b/0x470 fs/namei.c:4082
do_sys_openat2+0x11b/0x1d0 fs/open.c:1437
do_sys_open fs/open.c:1452 [inline]
__do_sys_openat fs/open.c:1468 [inline]
__se_sys_openat fs/open.c:1463 [inline]
__x64_sys_openat+0x174/0x210 fs/open.c:1463
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7cbbf8e221
RSP: 002b:00007fff8958ca10 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f7cbc010925 RCX: 00007f7cbbf8e221
RDX: 0000000000090800 RSI: 00007fff8958dbc0 RDI: 00000000ffffff9c
RBP: 00007fff8958dbac R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000287 R12: 00007fff8958dbc0
R13: 00007f7cbc010925 R14: 000000000006aa86 R15: 00007fff8958dc00
task:syz-executor state:R running task stack:23880 pid:5841 tgid:5841 ppid:5840 task_flags:0x400100 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x116a/0x5de0 kernel/sched/core.c:6785
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7108
irqentry_exit+0x36/0x90 kernel/entry/common.c:307
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:rcu_read_lock include/linux/rcupdate.h:842 [inline]
RIP: 0010:class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
RIP: 0010:unwind_next_frame+0xa3b/0x20a0 arch/x86/kernel/unwind_orc.c:479
Code: 6d f9 ff ff 80 3d 84 51 68 12 00 0f 85 60 f9 ff ff 4c 89 ef c6 05 74 51 68 12 01 e8 cf f0 ff ff e9 4c f9 ff ff e8 05 8c 36 00 <84> c0 0f 85 9c f6 ff ff e8 78 00 16 0a 85 c0 0f 84 8f f6 ff ff 80
RSP: 0018:ffffc90000ac7860 EFLAGS: 00000286
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000044e03ca5
RDX: 0000000000000000 RSI: ffffffff8c157ce0 RDI: ffffffff8df27da0
RBP: ffffc90000ac7918 R08: bb39787382043d4c R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff81a78040
R13: ffffc90000ac78d0 R14: 0000000000000000 R15: ffff88802230c880
arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
save_stack+0x160/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x84/0x1a0 mm/page_owner.c:308
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0x7fe/0x1180 mm/page_alloc.c:2706
discard_slab mm/slub.c:2717 [inline]
__put_partials+0x16d/0x1c0 mm/slub.c:3186
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4d/0x120 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4148 [inline]
slab_alloc_node mm/slub.c:4197 [inline]
kmem_cache_alloc_lru_noprof+0x1d0/0x3b0 mm/slub.c:4216
__d_alloc+0x31/0xaa0 fs/dcache.c:1690
d_alloc_pseudo+0x1c/0xc0 fs/dcache.c:1821
alloc_path_pseudo fs/file_table.c:360 [inline]
alloc_file_pseudo+0xcf/0x230 fs/file_table.c:376
create_pipe_files+0x364/0x930 fs/pipe.c:942
__do_pipe_flags fs/pipe.c:983 [inline]
do_pipe2+0xaf/0x1c0 fs/pipe.c:1034
__do_sys_pipe2 fs/pipe.c:1052 [inline]
__se_sys_pipe2 fs/pipe.c:1050 [inline]
__x64_sys_pipe2+0x54/0x80 fs/pipe.c:1050
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f678118d649
RSP: 002b:00007fff7deb3638 EFLAGS: 00000246 ORIG_RAX: 0000000000000125
RAX: ffffffffffffffda RBX: 0000555570d0baa0 RCX: 00007f678118d649
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 00007fff7deb3648
RBP: 00007fff7deb3a00 R08: 0000000000000007 R09: 0000555570d0ba80
R10: e1007f7439a0f0cb R11: 0000000000000246 R12: 0000555570d10578
R13: 0000555570d10550 R14: 0000555570d10578 R15: 0000555570d0e260
task:udevd state:R running task stack:24664 pid:5186 tgid:5186 ppid:1 task_flags:0x400140 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x116a/0x5de0 kernel/sched/core.c:6785
preempt_schedule_notrace+0x62/0xe0 kernel/sched/core.c:7058
preempt_schedule_notrace_thunk+0x16/0x30 arch/x86/entry/thunk.S:13
rcu_is_watching+0x8e/0xc0 kernel/rcu/tree.c:746
trace_lock_acquire include/trace/events/lock.h:24 [inline]
lock_acquire+0x2cd/0x350 kernel/locking/lockdep.c:5834
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:841 [inline]
class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
unwind_next_frame+0xd1/0x20a0 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
save_stack+0x160/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x84/0x1a0 mm/page_owner.c:308
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0x7fe/0x1180 mm/page_alloc.c:2706
discard_slab mm/slub.c:2717 [inline]
__put_partials+0x16d/0x1c0 mm/slub.c:3186
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4d/0x120 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4148 [inline]
slab_alloc_node mm/slub.c:4197 [inline]
kmem_cache_alloc_noprof+0x1cb/0x3b0 mm/slub.c:4204
getname_flags.part.0+0x4c/0x550 fs/namei.c:146
getname_flags+0x93/0xf0 include/linux/audit.h:322
do_readlinkat+0xb4/0x3a0 fs/stat.c:575
__do_sys_readlink fs/stat.c:613 [inline]
__se_sys_readlink fs/stat.c:610 [inline]
__x64_sys_readlink+0x78/0xc0 fs/stat.c:610
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f922b1153a7
RSP: 002b:00007ffea6e0a2c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000059
RAX: ffffffffffffffda RBX: 00007ffea6e0a7a0 RCX: 00007f922b1153a7
RDX: 0000000000000400 RSI: 00007ffea6e0a2d0 RDI: 00007ffea6e0a7a0
RBP: 00007ffea6e0a2d0 R08: 00005590907f4720 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000400
R13: 0000000000000100 R14: 0000559081a16be0 R15: 00007ffea6e0b220