rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4681/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=10597, q=1012 ncpus=2)
task:udevd state:R running task stack:23504 pid:4681 tgid:4681 ppid:1 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:unwind_get_return_address+0x76/0xc0 arch/x86/kernel/unwind_orc.c:369
Code: 08 48 89 df e8 eb ad b9 00 48 8b 3b e8 e3 70 1e 00 89 c5 31 ff 89 c6 e8 f8 6a 52 00 85 ed 74 20 e8 af 66 52 00 43 80 3c 37 00 <74> 08 48 89 df e8 c0 ad b9 00 48 8b 03 eb 0e e8 96 66 52 00 eb 05
RSP: 0018:ffffc900097f72b8 EFLAGS: 00000246
RAX: ffffffff81412601 RBX: ffffc900097f7328 RCX: ffff88807e6d3c00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffffffff814125f8 R09: ffffffff814140bf
R10: 0000000000000003 R11: ffff88807e6d3c00 R12: ffff88807e6d3c00
R13: ffffffff817f2f80 R14: dffffc0000000000 R15: 1ffff920012fee65
arch_stack_walk+0x125/0x1b0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
save_stack+0xfb/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x76/0x430 mm/page_owner.c:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1101 [inline]
free_unref_page+0xd22/0xea0 mm/page_alloc.c:2619
discard_slab mm/slub.c:2587 [inline]
__put_partials+0xeb/0x130 mm/slub.c:3055
put_cpu_partial+0x17c/0x250 mm/slub.c:3130
__slab_free+0x2ea/0x3d0 mm/slub.c:4347
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9e/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:322
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3992 [inline]
slab_alloc_node mm/slub.c:4041 [inline]
__do_kmalloc_node mm/slub.c:4161 [inline]
__kmalloc_noprof+0x1a6/0x400 mm/slub.c:4174
kmalloc_noprof include/linux/slab.h:685 [inline]
tomoyo_realpath_from_path+0xcf/0x5e0 security/tomoyo/realpath.c:251
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x2b7/0x740 security/tomoyo/file.c:822
security_inode_getattr+0xda/0x130 security/security.c:2269
vfs_getattr+0x45/0x430 fs/stat.c:204
vfs_statx_path fs/stat.c:251 [inline]
vfs_statx+0x199/0x490 fs/stat.c:315
vfs_fstatat+0x145/0x190 fs/stat.c:341
__do_sys_newfstatat fs/stat.c:505 [inline]
__se_sys_newfstatat fs/stat.c:499 [inline]
__x64_sys_newfstatat+0x11d/0x1a0 fs/stat.c:499
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f36697165f4
RSP: 002b:00007ffe06eebf78 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00005557bfcfc6c0 RCX: 00007f36697165f4
RDX: 00007ffe06eebf88 RSI: 00005557bfcea7ed RDI: 00000000ffffff9c
RBP: 00005557d71e9fb8 R08: 0000000008495aae R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000000 R15: 00005557bfcf0dca
rcu: rcu_preempt kthread starved for 8122 jiffies! g10597 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:I stack:24912 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6708
preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6732
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0x130/0x140 kernel/locking/spinlock.c:194
debug_object_assert_init+0x2d0/0x440 lib/debugobjects.c:900
debug_timer_assert_init kernel/time/timer.c:846 [inline]
debug_assert_init kernel/time/timer.c:891 [inline]
__mod_timer+0x10d/0xeb0 kernel/time/timer.c:1072
schedule_timeout+0x1b9/0x310 kernel/time/timer.c:2580
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 2859 Comm: kworker/R-bat_e Not tainted 6.11.0-rc6-syzkaller-00326-gd1f2d51b711a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: bat_events batadv_tt_purge
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:24 [inline]
RIP: 0010:lock_acquire+0xdc/0x550 kernel/locking/lockdep.c:5730
Code: 08 0f 83 f4 02 00 00 89 c3 48 89 d8 48 c1 e8 06 48 8d 3c c5 68 77 18 90 be 08 00 00 00 e8 3c 09 8b 00 48 0f a3 1d 5c aa a8 0e <73> 16 e8 cd f5 09 00 84 c0 75 0d 80 3d 07 76 92 0e 00 0f 84 f9 02
RSP: 0018:ffffc900000077c0 EFLAGS: 00000257
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff816fcd04
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90187768
RBP: ffffc90000007918 R08: ffffffff9018776f R09: 1ffffffff2030eed
R10: dffffc0000000000 R11: fffffbfff2030eee R12: 1ffff92000000f00
R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f46ca68b85a CR3: 000000006098a000 CR4: 0000000000350ef0
Call Trace:
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:351 [inline]
mac80211_hwsim_tx_frame_no_nl+0x982/0x18d0 drivers/net/wireless/virtual/mac80211_hwsim.c:1817
mac80211_hwsim_tx_frame+0x1cc/0x220 drivers/net/wireless/virtual/mac80211_hwsim.c:2215
mac80211_hwsim_beacon_tx+0x3bf/0x850 drivers/net/wireless/virtual/mac80211_hwsim.c:2315
__iterate_interfaces+0x224/0x510 net/mac80211/util.c:772
ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:808
mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2345
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x59d/0xd50 kernel/time/hrtimer.c:1753
hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1770
handle_softirqs+0x2c6/0x970 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:103 [inline]
RIP: 0010:__local_bh_enable_ip+0x170/0x200 kernel/softirq.c:389
Code: 8c e8 04 6d 62 0a 65 66 8b 05 f4 7a ac 7e 66 85 c0 75 5d bf 01 00 00 00 e8 ed a4 0b 00 e8 e8 94 43 00 fb 65 8b 05 b8 7a ac 7e <85> c0 75 05 e8 e7 59 a9 ff 48 c7 44 24 20 0e 36 e0 45 49 c7 04 1c
RSP: 0018:ffffc90009ab7a00 EFLAGS: 00000286
RAX: 0000000080000000 RBX: 1ffff92001356f44 RCX: ffffffff81703fea
RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: ffffffff8c608e80
RBP: ffffc90009ab7aa8 R08: ffffffff941e4937 R09: 1ffffffff283c926
R10: dffffc0000000000 R11: fffffbfff283c927 R12: dffffc0000000000
R13: 1ffff92001356f48 R14: ffffc90009ab7a40 R15: 0000000000000201
spin_unlock_bh include/linux/spinlock.h:396 [inline]
batadv_tt_global_purge net/batman-adv/translation-table.c:2299 [inline]
batadv_tt_purge+0x4e3/0xa40 net/batman-adv/translation-table.c:3561
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
rescuer_thread+0x63f/0x10a0 kernel/workqueue.c:3485
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244