rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: (detected by 1, t=10502 jiffies, g=14577, q=2121 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10370 (4294978369-4294967999), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10370 jiffies! g14577 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:R running task stack:26640 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2034
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2236
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 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: 1 UID: 0 PID: 5527 Comm: syz.1.26 Not tainted 6.11.0-rc5-syzkaller-00050-g3ec3f5fc4a91 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__orc_find+0x0/0x130 arch/x86/kernel/unwind_orc.c:85
Code: a2 4d 00 48 8b 03 5b c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <41> 57 41 56 49 89 fe 41 55 41 54 49 89 cc 55 53 89 d3 48 83 ec 18
RSP: 0018:ffffc90000a18798 EFLAGS: 00000202
RAX: 000000000001135d RBX: ffffc90000a18820 RCX: ffffffff814ebc95
RDX: 0000000000000001 RSI: ffffffff90a40692 RDI: ffffffff90235648
RBP: 0000000000000002 R08: 0000000000000004 R09: 0000000000004ebc
R10: 00000000000a4000 R11: 0000000000000000 R12: ffffffff814ebc95
R13: ffffffff90a40692 R14: 000000000001135d R15: ffffc90000a18855
FS: 0000555589c35500(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31d5ffff CR3: 000000007b586000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
unwind_next_frame+0x335/0x23a0 arch/x86/kernel/unwind_orc.c:494
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2252 [inline]
slab_free mm/slub.c:4473 [inline]
kmem_cache_free+0x12f/0x3a0 mm/slub.c:4548
kfree_skbmem+0x1a4/0x1f0 net/core/skbuff.c:1146
__kfree_skb net/core/skbuff.c:1203 [inline]
consume_skb net/core/skbuff.c:1426 [inline]
consume_skb+0xdd/0x160 net/core/skbuff.c:1420
mac80211_hwsim_tx_frame+0x1f3/0x2a0 drivers/net/wireless/virtual/mac80211_hwsim.c:2216
__mac80211_hwsim_beacon_tx drivers/net/wireless/virtual/mac80211_hwsim.c:2232 [inline]
mac80211_hwsim_beacon_tx+0x592/0xa00 drivers/net/wireless/virtual/mac80211_hwsim.c:2315
__iterate_interfaces+0x2d0/0x5d0 net/mac80211/util.c:772
ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 net/mac80211/util.c:808
mac80211_hwsim_beacon+0x105/0x200 drivers/net/wireless/virtual/mac80211_hwsim.c:2345
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1753
hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1770
handle_softirqs+0x216/0x8f0 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu kernel/softirq.c:637 [inline]
irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:60 [inline]
RIP: 0010:unwind_next_frame+0x11b8/0x23a0 arch/x86/kernel/unwind_orc.c:665
Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 2b 10 00 00 4c 8b 6b 10 4c 39 ed 73 36 e8 61 85 4d 00 4c 8d 75 08 4d 39 f4 73 28 53 85 4d 00 4d 39 f5 72 1e e8 49 85 4d 00 4c 8b 7c 24 18 48 89
RSP: 0018:ffffc900036ff670 EFLAGS: 00000297
RAX: 0000000000000000 RBX: ffffc900036ff6f0 RCX: ffffffff813cf026
RDX: ffff888023211e00 RSI: ffffffff813cf0af RDI: ffffc900036ff700
RBP: ffffc900036ff820 R08: 0000000000000004 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc900036f8000
R13: ffffc90003700000 R14: ffffc900036ff828 R15: 0000000000000001
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
save_stack+0x162/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x8d/0x400 mm/page_owner.c:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1094 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2612
__put_partials+0x14c/0x170 mm/slub.c:3051
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4e/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x192/0x1e0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:322
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3988 [inline]
slab_alloc_node mm/slub.c:4037 [inline]
kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4044
taskstats_tgid_alloc kernel/taskstats.c:582 [inline]
taskstats_exit+0x656/0xbe0 kernel/taskstats.c:621
do_exit+0x84a/0x2bb0 kernel/exit.c:867
do_group_exit+0xd3/0x2a0 kernel/exit.c:1031
get_signal+0x25fd/0x2770 kernel/signal.c:2917
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe14f179e79
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff5a7e81f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffff92 RBX: 000000000004bff4 RCX: 00007fe14f179e79
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fe14f315f8c
RBP: 00007fe14f315f8c R08: 00007fe14f315f80 R09: 00007fff5a7e84df
R10: 00007fff5a7e82f0 R11: 0000000000000246 R12: 0000000000000bea
R13: 00007fff5a7e82f0 R14: 00007fff5a7e8310 R15: 000000000004b40a