rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: (detected by 1, t=10502 jiffies, g=16529, q=290 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294959633-4294949131), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g16529 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R running task stack:27848 pid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x15ae/0x4660 kernel/sched/core.c:6700
schedule+0xbd/0x170 kernel/sched/core.c:6774
schedule_timeout+0x188/0x2d0 kernel/time/timer.c:2168
rcu_gp_fqs_loop+0x30d/0x1590 kernel/rcu/tree.c:1667
rcu_gp_kthread+0x9d/0x3b0 kernel/rcu/tree.c:1866
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6628 Comm: syz.2.22 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:check_region_inline mm/kasan/generic.c:-1 [inline]
RIP: 0010:kasan_check_range+0x10/0x290 mm/kasan/generic.c:187
Code: c0 c3 0f 0b b8 ea ff ff ff c3 0f 0b b8 ea ff ff ff c3 cc cc cc cc cc cc cc cc 66 0f 1f 00 b0 01 48 85 f6 0f 84 b4 01 00 00 55 <41> 57 41 56 41 55 41 54 53 4c 8d 04 37 49 39 f8 0f 82 13 02 00 00
RSP: 0018:ffffc900000069b0 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff81688636
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e8ae2a8
RBP: ffffc90000006ad0 R08: ffffc90000006bb7 R09: 0000000000000000
R10: ffffc90000006ba0 R11: fffff52000000d77 R12: ffffffff81b2275c
R13: dffffc0000000000 R14: 0000000000000001 R15: 1ffff92000000d44
FS: 00007fb485a386c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e663fff CR3: 0000000075825000 CR4: 00000000003506f0
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
cpumask_test_cpu include/linux/cpumask.h:504 [inline]
cpu_online include/linux/cpumask.h:1082 [inline]
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0xa6/0x8c0 kernel/locking/lockdep.c:5765
__perf_output_begin kernel/events/ring_buffer.c:264 [inline]
perf_output_begin_forward+0x998/0xa60 kernel/events/ring_buffer.c:273
__perf_event_output kernel/events/core.c:7969 [inline]
perf_event_output_forward+0x25a/0x3e0 kernel/events/core.c:7987
__perf_event_overflow+0x461/0x660 kernel/events/core.c:9712
perf_event_overflow kernel/events/core.c:9733 [inline]
perf_swevent_hrtimer+0x437/0x610 kernel/events/core.c:11222
__run_hrtimer kernel/time/hrtimer.c:1754 [inline]
__hrtimer_run_queues+0x4e8/0xc10 kernel/time/hrtimer.c:1818
hrtimer_interrupt+0x39d/0x980 kernel/time/hrtimer.c:1880
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1077 [inline]
__sysvec_apic_timer_interrupt+0xfb/0x3b0 arch/x86/kernel/apic/apic.c:1094
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0x51/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:seqcount_lockdep_reader_access+0x19a/0x1d0 include/linux/seqlock.h:105
Code: 00 4d 85 e4 75 16 e8 c5 bf 0f 00 eb 15 e8 be bf 0f 00 e8 89 e2 0c 09 4d 85 e4 74 ea e8 af bf 0f 00 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3e 00 00 00 00 43 c7 44 3e 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc90000007380 EFLAGS: 00000246
RAX: ffffffff817725c1 RBX: 0000000000000000 RCX: ffff88802428da00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007438 R08: ffffffff911bc5ff R09: 1ffffffff22378bf
R10: dffffc0000000000 R11: fffffbfff22378c0 R12: 0000000000000200
R13: 000001fb6c0aca63 R14: 1ffff92000000e70 R15: dffffc0000000000
timekeeping_get_delta kernel/time/timekeeping.c:254 [inline]
timekeeping_get_ns kernel/time/timekeeping.c:388 [inline]
ktime_get_with_offset+0x103/0x330 kernel/time/timekeeping.c:891
ktime_get_real include/linux/timekeeping.h:79 [inline]
netif_rx_internal+0x33d/0x4e0 net/core/dev.c:5153
__netif_rx+0x78/0xc0 net/core/dev.c:5196
veth_forward_skb drivers/net/veth.c:325 [inline]
veth_xmit+0x57a/0xa30 drivers/net/veth.c:378
__netdev_start_xmit include/linux/netdevice.h:4943 [inline]
netdev_start_xmit include/linux/netdevice.h:4957 [inline]
xmit_one net/core/dev.c:3644 [inline]
dev_hard_start_xmit+0x269/0x790 net/core/dev.c:3660
__dev_queue_xmit+0x198c/0x3630 net/core/dev.c:4454
dev_queue_xmit include/linux/netdevice.h:3113 [inline]
hsr_xmit net/hsr/hsr_forward.c:382 [inline]
hsr_forward_do net/hsr/hsr_forward.c:473 [inline]
hsr_forward_skb+0x12a9/0x20b0 net/hsr/hsr_forward.c:626
send_hsr_supervision_frame+0x5fb/0xb90 net/hsr/hsr_device.c:346
hsr_announce+0x198/0x350 net/hsr/hsr_device.c:402
call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x570/0x810 kernel/time/timer.c:2023
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
handle_softirqs+0x27d/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:smp_call_function_single+0x370/0x5a0 kernel/smp.c:635
Code: 8d 7b 0e 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 63 01 00 00 8b 7c 24 04 66 89 7b 0e 48 89 de e8 33 02 00 00 41 89 c4 <45> 85 ff 74 44 44 89 24 24 0f 1f 44 00 00 4d 89 f7 48 83 c3 08 49
RSP: 0018:ffffc90003907ae0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90003907b20 RCX: 7bf80791ec328300
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003907bd0 R08: ffffffff911bc61f R09: 1ffffffff22378c3
R10: dffffc0000000000 R11: fffffbfff22378c4 R12: 0000000000000000
R13: dffffc0000000000 R14: 1ffff92000720f60 R15: 0000000000000001
task_function_call kernel/events/core.c:120 [inline]
perf_install_in_context+0x5bb/0x920 kernel/events/core.c:2951
__do_sys_perf_event_open kernel/events/core.c:12949 [inline]
__se_sys_perf_event_open+0x1841/0x1c60 kernel/events/core.c:12601
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb484b9ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb485a38028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fb484e15fa0 RCX: 00007fb484b9ce59
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007fb484c32d6f R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb484e16038 R14: 00007fb484e15fa0 R15: 00007ffc003d13e8