rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (10124 ticks this GP) idle=386/1/0x4000000000000000 softirq=38890/38895 fqs=7
(t=10501 jiffies g=63613 q=2185)
rcu: rcu_preempt kthread starved for 5131 jiffies! g63613 f0x0 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:29120 pid: 11 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4327 [inline]
__schedule+0x8eb/0x21b0 kernel/sched/core.c:5078
schedule+0xcf/0x270 kernel/sched/core.c:5157
schedule_timeout+0x148/0x250 kernel/time/timer.c:1878
rcu_gp_fqs_loop kernel/rcu/tree.c:1940 [inline]
rcu_gp_kthread+0xba1/0x1f50 kernel/rcu/tree.c:2113
kthread+0x3b1/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
NMI backtrace for cpu 1
CPU: 1 PID: 23189 Comm: syz-executor.4 Not tainted 5.10.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x107/0x163 lib/dump_stack.c:120
nmi_cpu_backtrace.cold+0x3c/0xef lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x1f4/0x230 kernel/rcu/tree_stall.h:337
print_cpu_stall kernel/rcu/tree_stall.h:569 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:643 [inline]
rcu_pending kernel/rcu/tree.c:3751 [inline]
rcu_sched_clock_irq.cold+0x514/0xf90 kernel/rcu/tree.c:2580
update_process_times+0x16d/0x200 kernel/time/timer.c:1782
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1376
__run_hrtimer kernel/time/hrtimer.c:1519 [inline]
__hrtimer_run_queues+0x1c0/0xea0 kernel/time/hrtimer.c:1583
hrtimer_interrupt+0x334/0x960 kernel/time/hrtimer.c:1645
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x146/0x550 arch/x86/kernel/apic/apic.c:1102
run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:91 [inline]
sysvec_apic_timer_interrupt+0x48/0x100 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628
RIP: 0010:preempt_count_sub+0x5f/0x150 kernel/sched/core.c:4772
Code: 3d 0e 85 c9 75 1b 65 8b 05 6e 67 b4 7e 89 c2 81 e2 ff ff ff 7f 39 da 7c 13 81 fb fe 00 00 00 76 63 f7 db 65 01 1d 51 67 b4 7e <5b> c3 e8 7a 1a cd 07 85 c0 74 f5 48 c7 c0 98 6c 7e 8d 48 ba 00 00
RSP: 0018:ffffc90000da8640 EFLAGS: 00000213
RAX: 0000000000000103 RBX: 00000000ffffffff RCX: 0000000000000000
RDX: 0000000000000103 RSI: ffffc90008e56ff0 RDI: 0000000000000001
RBP: ffffc90008e57000 R08: ffffffff8e8b78c6 R09: 0000000000000001
R10: fffff520001b50f2 R11: 0000000000000001 R12: ffffc90008e50000
R13: ffffc90000da876d R14: ffffc90000da8788 R15: ffffc90000da8738
unwind_next_frame+0xec9/0x2460 arch/x86/kernel/unwind_orc.c:608
arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
kasan_set_track mm/kasan/common.c:56 [inline]
__kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:461
slab_post_alloc_hook mm/slab.h:512 [inline]
slab_alloc_node mm/slab.c:3257 [inline]
kmem_cache_alloc_node+0x148/0x3f0 mm/slab.c:3578
__alloc_skb+0x71/0x5c0 net/core/skbuff.c:198
skb_copy+0x137/0x2f0 net/core/skbuff.c:1514
mac80211_hwsim_tx_frame_no_nl.isra.0+0xbbf/0x13e0 drivers/net/wireless/mac80211_hwsim.c:1493
mac80211_hwsim_tx_frame+0x168/0x200 drivers/net/wireless/mac80211_hwsim.c:1705
mac80211_hwsim_beacon_tx+0x4da/0x9a0 drivers/net/wireless/mac80211_hwsim.c:1759
__iterate_interfaces+0x1e5/0x540 net/mac80211/util.c:793
ieee80211_iterate_active_interfaces_atomic+0xab/0x1b0 net/mac80211/util.c:829
mac80211_hwsim_beacon+0xfa/0x1c0 drivers/net/wireless/mac80211_hwsim.c:1782
__run_hrtimer kernel/time/hrtimer.c:1519 [inline]
__hrtimer_run_queues+0x609/0xea0 kernel/time/hrtimer.c:1583
hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1600
__do_softirq+0x2bc/0xa77 kernel/softirq.c:343
asm_call_irq_on_stack+0xf/0x20
__run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77
invoke_softirq kernel/softirq.c:226 [inline]
__irq_exit_rcu+0x17f/0x200 kernel/softirq.c:420
irq_exit_rcu+0x5/0x20 kernel/softirq.c:432
sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628
RIP: 0010:__schedule+0x0/0x21b0 kernel/sched/core.c:4960
Code: 5b 5d 41 5c c3 e8 10 45 9a f8 eb d9 e8 09 45 9a f8 e9 4b ff ff ff e8 9f 44 9a f8 e9 02 ff ff ff e8 b5 44 9a f8 e9 6c ff ff ff <55> 48 89 e5 41 57 48 8d 85 78 ff ff ff 41 56 49 c7 c6 00 4d 03 00
RSP: 0018:ffffc90008e56fe0 EFLAGS: 00000206
RAX: 000000000000062d RBX: ffff88804e378100 RCX: ffffffff815867b7
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffed1009c6f020 R08: 0000000000000001 R09: ffffffff8f5207b7
R10: fffffbfff1ea40f6 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:5340
irqentry_exit_cond_resched kernel/entry/common.c:393 [inline]
irqentry_exit_cond_resched kernel/entry/common.c:385 [inline]
irqentry_exit+0x7a/0xa0 kernel/entry/common.c:423
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:85 [inline]
RIP: 0010:lock_acquire kernel/locking/lockdep.c:5440 [inline]
RIP: 0010:lock_acquire+0x2c7/0x750 kernel/locking/lockdep.c:5402
Code: 48 c7 c7 40 b8 6b 89 48 83 c4 20 e8 e3 b7 c1 07 b8 ff ff ff ff 65 0f c1 05 36 14 a9 7e 83 f8 01 0f 85 40 03 00 00 ff 34 24 9d 3a fe ff ff 65 ff 05 9d 02 a9 7e 48 8b 05 76 73 11 0c e8 01 ad
RSP: 0018:ffffc90008e570b8 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 1ffff920011cae19 RCX: 0000000000000001
RDX: 1ffff11009c6f150 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8f5207b7
R10: fffffbfff1ea40f6 R11: 0000000000000001 R12: 0000000000000000
R13: ffffffff8b8ec1c0 R14: 0000000000000000 R15: 0000000000000000
fs_reclaim_acquire mm/page_alloc.c:4336 [inline]
fs_reclaim_acquire+0xd2/0x150 mm/page_alloc.c:4327
might_alloc include/linux/sched/mm.h:193 [inline]
slab_pre_alloc_hook mm/slab.h:493 [inline]
slab_alloc_node mm/slab.c:3221 [inline]
kmem_cache_alloc_node+0x42/0x3f0 mm/slab.c:3578
__alloc_skb+0x71/0x5c0 net/core/skbuff.c:198
alloc_skb include/linux/skbuff.h:1099 [inline]
alloc_skb_with_frags+0x93/0x5d0 net/core/skbuff.c:5849
sock_alloc_send_pskb+0x793/0x920 net/core/sock.c:2348
__ip_append_data+0x15b0/0x3220 net/ipv4/ip_output.c:1097
ip_make_skb+0x226/0x2a0 net/ipv4/ip_output.c:1634
udp_sendmsg+0x1c4c/0x2830 net/ipv4/udp.c:1229
inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:817
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:672
____sys_sendmsg+0x331/0x810 net/socket.c:2345
___sys_sendmsg+0xf3/0x170 net/socket.c:2399
__sys_sendmmsg+0x195/0x470 net/socket.c:2489
__do_sys_sendmmsg net/socket.c:2518 [inline]
__se_sys_sendmmsg net/socket.c:2515 [inline]
__x64_sys_sendmmsg+0x99/0x100 net/socket.c:2515
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e149
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fb09083ac68 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e149
RDX: 040000000000000c RSI: 0000000020007fc0 RDI: 0000000000000003
RBP: 000000000119bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0300000000000000 R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007ffca77a665f R14: 00007fb09083b9c0 R15: 000000000119bf8c