[v5.15] INFO: rcu detected stall in NF_HOOK (4)
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syzbot
Jun 30, 2026, 4:21:24 AM (2 days ago) Jun 30
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: eceeec79dbc6 Linux 5.15.210
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=16ca9cc1580000
kernel config: https://syzkaller.appspot.com/x/.config?x=6a0cae3abafc69
dashboard link: https://syzkaller.appspot.com/bug?extid=02c2062b24a4563dd4bc
compiler: Debian clang version 22.1.6 (++20260514074242+fc4aad7b5db3-1~exp1~20260514074407.73), Debian LLD 22.1.6
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/0843b8663fe3/disk-eceeec79.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/232e17f9e226/vmlinux-eceeec79.xz
kernel image: https://storage.googleapis.com/syzbot-assets/c70c224634e9/bzImage-eceeec79.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+02c206...@syzkaller.appspotmail.com
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (4844 ticks this GP) idle=b3b/1/0x4000000000000000 softirq=8377/8378 fqs=81
(t=10501 jiffies g=9069 q=1854)
rcu: rcu_preempt kthread starved for 10337 jiffies! g9069 f0x0 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:28112 pid: 15 ppid: 2 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5049 [inline]
__schedule+0x11c3/0x4350 kernel/sched/core.c:6395
schedule+0x11b/0x1e0 kernel/sched/core.c:6478
schedule_timeout+0x184/0x2d0 kernel/time/timer.c:2117
rcu_gp_fqs_loop+0x2be/0x11f0 kernel/rcu/tree.c:1972
rcu_gp_kthread+0x9a/0x370 kernel/rcu/tree.c:2145
kthread+0x42e/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
</TASK>
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: 4832 Comm: syz.9.111 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:212 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:156 [inline]
RIP: 0010:wrmsrl arch/x86/include/asm/msr.h:271 [inline]
RIP: 0010:lapic_next_deadline+0x21/0x40 arch/x86/kernel/apic/apic.c:481
Code: 5b 41 5c 41 5e 41 5f 5d c3 0f ae f0 0f ae e8 0f 31 48 c1 e2 20 48 09 c2 48 8d 04 fa 48 89 c2 48 c1 ea 20 b9 e0 06 00 00 0f 30 <66> 90 31 c0 c3 bf e0 06 00 00 48 89 c6 31 d2 e8 fb 6d d0 02 31 c0
RSP: 0018:ffffc90000006688 EFLAGS: 00000007
RAX: 00000082da2d7d91 RBX: ffff8880b9027280 RCX: 00000000000006e0
RDX: 0000000000000082 RSI: ffff8880b9027280 RDI: 0000000000000551
RBP: 0000000000000000 R08: ffffffff8d89e06f R09: 1ffffffff1b13c0d
R10: dffffc0000000000 R11: fffffbfff1b13c0e R12: dffffc0000000000
R13: 00000000008cccc4 R14: 0000000000000551 R15: 0000000000000019
FS: 00007ff1992626c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d7eb536950 CR3: 0000000022888000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<IRQ>
clockevents_program_event+0x1bc/0x310 kernel/time/clockevents.c:334
hrtimer_interrupt+0x4cb/0x8b0 kernel/time/hrtimer.c:1824
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
__sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:stack_trace_consume_entry+0xef/0x270 kernel/stacktrace.c:93
Code: 8b 74 24 08 48 8b 1f 45 8d 79 01 0f b6 44 15 00 84 c0 0f 85 35 01 00 00 45 89 38 4e 8d 3c cb 4c 89 f8 48 c1 e8 03 80 3c 10 00 <74> 1a 4c 89 ff 48 89 f3 49 89 d4 4c 89 c5 e8 2e a7 56 00 49 89 e8
RSP: 0018:ffffc900000068b8 EFLAGS: 00000246
RAX: 1ffff92000000d73 RBX: ffffc90000006a40 RCX: 0000000000000301
RDX: dffffc0000000000 RSI: ffffffff81b2cf96 RDI: ffffc900000069c0
RBP: 1ffff92000000d3a R08: ffffc900000069d0 R09: 000000000000002b
R10: dffffc0000000000 R11: fffff52000000d2d R12: 0000000000000000
R13: 1ffff92000000d39 R14: ffffc900000069c8 R15: ffffc90000006b98
arch_stack_walk+0x100/0x140 arch/x86/kernel/stacktrace.c:27
stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:46
kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
____kasan_slab_free+0xd5/0x110 mm/kasan/common.c:366
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:1710 [inline]
slab_free_freelist_hook+0xec/0x170 mm/slub.c:1736
slab_free mm/slub.c:3504 [inline]
kmem_cache_free+0x8f/0x210 mm/slub.c:3520
packet_rcv+0x157/0x1260 net/packet/af_packet.c:2243
dev_queue_xmit_nit+0xa48/0xae0 net/core/dev.c:2386
xmit_one net/core/dev.c:3657 [inline]
dev_hard_start_xmit+0x140/0x7d0 net/core/dev.c:3678
sch_direct_xmit+0x24d/0x4a0 net/sched/sch_generic.c:345
__dev_xmit_skb net/core/dev.c:3897 [inline]
__dev_queue_xmit+0x1694/0x2e50 net/core/dev.c:4266
NF_HOOK+0x2fe/0x380 include/linux/netfilter.h:302
arp_xmit+0x142/0x230 net/ipv4/arp.c:643
arp_process+0x159a/0x1ab0 net/ipv4/arp.c:833
NF_HOOK+0x2fe/0x380 include/linux/netfilter.h:302
__netif_receive_skb_list_ptype net/core/dev.c:5599 [inline]
__netif_receive_skb_list_core+0x424/0x770 net/core/dev.c:5632
__netif_receive_skb_list net/core/dev.c:5694 [inline]
netif_receive_skb_list_internal+0x898/0xbd0 net/core/dev.c:5785
gro_normal_list net/core/dev.c:5939 [inline]
gro_normal_one net/core/dev.c:5952 [inline]
napi_skb_finish net/core/dev.c:6289 [inline]
napi_gro_receive+0x4eb/0xa60 net/core/dev.c:6319
receive_buf+0x385e/0x5870 drivers/net/virtio_net.c:1240
virtnet_receive drivers/net/virtio_net.c:1504 [inline]
virtnet_poll+0x511/0xe90 drivers/net/virtio_net.c:1617
__napi_poll+0xbb/0x430 net/core/dev.c:7101
napi_poll net/core/dev.c:7168 [inline]
net_rx_action+0x522/0xa80 net/core/dev.c:7258
handle_softirqs+0x336/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:lock_acquire+0x208/0x400 kernel/locking/lockdep.c:5627
Code: f7 84 24 80 00 00 00 00 02 00 00 43 c6 44 3d 04 f8 0f 85 f1 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 44 3d 00 00 00 00 00 43 c7 44 3d 08 00 00 00 00 65 48 8b 04
RSP: 0018:ffffc900033ff140 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 209001063f312900
RDX: 0000000000000000 RSI: ffffffff8a2b3e80 RDI: ffffffff8a79c980
RBP: ffffc900033ff260 R08: dffffc0000000000 R09: 1ffffffff2039618
R10: dffffc0000000000 R11: fffffbfff2039619 R12: ffffffff8c31ef20
R13: 1ffff9200067fe34 R14: 0000000000000246 R15: dffffc0000000000
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:313
rcu_read_lock include/linux/rcupdate.h:740 [inline]
BPF_PROG_RUN_ARRAY include/linux/bpf.h:1431 [inline]
trace_call_bpf+0xf9/0x5b0 kernel/trace/bpf_trace.c:127
perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10016
perf_trace_lock_acquire+0x341/0x3f0 include/trace/events/lock.h:13
trace_lock_acquire include/trace/events/lock.h:13 [inline]
lock_acquire+0x3d7/0x400 kernel/locking/lockdep.c:5594
rcu_lock_acquire+0x20/0x30 include/linux/rcupdate.h:313
rcu_read_lock include/linux/rcupdate.h:740 [inline]
percpu_ref_put_many include/linux/percpu-refcount.h:317 [inline]
percpu_ref_put include/linux/percpu-refcount.h:338 [inline]
obj_cgroup_put+0xe/0xc0 include/linux/memcontrol.h:816
memcg_slab_free_hook+0x6e/0x1e0 mm/slab.h:367
do_slab_free mm/slub.c:3437 [inline]
___cache_free+0x63/0x120 mm/slub.c:3511
qlist_free_all+0x35/0x90 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x150/0x160 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0x2f/0xc0 mm/kasan/common.c:444
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook+0x4c/0x380 mm/slab.h:519
slab_alloc_node mm/slub.c:3225 [inline]
kmem_cache_alloc_node_trace+0x194/0x2f0 mm/slub.c:3275
kmalloc_node include/linux/slab.h:625 [inline]
kzalloc_node include/linux/slab.h:749 [inline]
__get_vm_area_node+0x119/0x2d0 mm/vmalloc.c:2423
__vmalloc_node_range+0xef/0x8b0 mm/vmalloc.c:3027
__vmalloc_node mm/vmalloc.c:3087 [inline]
__vmalloc+0x76/0x80 mm/vmalloc.c:3101
bpf_prog_alloc_no_stats+0x36/0x2c0 kernel/bpf/core.c:90
bpf_prog_alloc+0x1a/0x1e0 kernel/bpf/core.c:124
bpf_prog_load+0x7d1/0x14e0 kernel/bpf/syscall.c:2301
__sys_bpf+0x532/0x6f0 kernel/bpf/syscall.c:4657
__do_sys_bpf kernel/bpf/syscall.c:4761 [inline]
__se_sys_bpf kernel/bpf/syscall.c:4759 [inline]
__x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4759
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7ff19b029e59
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:00007ff199262028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007ff19b2a3090 RCX: 00007ff19b029e59
RDX: 0000000000000080 RSI: 00002000000012c0 RDI: 0000000000000005
RBP: 00007ff19b0bfe6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff19b2a3128 R14: 00007ff19b2a3090 R15: 00007ffcb0d03c08
</TASK>
NMI backtrace for cpu 1
CPU: 1 PID: 4797 Comm: syz.7.103 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
<IRQ>
dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
nmi_cpu_backtrace+0x3a2/0x3d0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
rcu_dump_cpu_stacks+0x22d/0x380 kernel/rcu/tree_stall.h:349
print_cpu_stall+0x31f/0x5f0 kernel/rcu/tree_stall.h:633
check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
rcu_pending kernel/rcu/tree.c:3936 [inline]
rcu_sched_clock_irq+0x6ec/0x1120 kernel/rcu/tree.c:2619
update_process_times+0x193/0x200 kernel/time/timer.c:2021
tick_sched_handle kernel/time/tick-sched.c:254 [inline]
tick_sched_timer+0x37d/0x560 kernel/time/tick-sched.c:1473
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4b0/0xb60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x397/0x8b0 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
__sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:migrate_disable+0xaf/0x180 kernel/sched/core.c:2161
Code: 20 00 74 08 4c 89 ff e8 1f 98 6b 00 49 c7 c6 50 b0 03 00 4d 03 37 4c 89 f0 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 89 00 00 00 <41> ff 06 43 0f b6 44 25 00 84 c0 0f 85 96 00 00 00 66 c7 03 01 00
RSP: 0018:ffffc90000dcf968 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888027fd21f8 RCX: cb2b82a6747e1c00
RDX: 0000000000000100 RSI: ffffffff8a79c960 RDI: ffffffff8a79c920
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff8880b91351c8
R10: dffffc0000000000 R11: fffffbfff1b13c0e R12: dffffc0000000000
R13: 1ffff11004ffa43f R14: ffff8880b913b050 R15: ffffffff8be2d828
BPF_PROG_RUN_ARRAY include/linux/bpf.h:1430 [inline]
trace_call_bpf+0xef/0x5b0 kernel/trace/bpf_trace.c:127
perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10016
perf_trace_lock_acquire+0x341/0x3f0 include/trace/events/lock.h:13
trace_lock_acquire include/trace/events/lock.h:13 [inline]
lock_acquire+0x3d7/0x400 kernel/locking/lockdep.c:5594
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:313
rcu_read_lock include/linux/rcupdate.h:740 [inline]
net_generic+0x1a/0x200 include/net/netns/generic.h:44
is_vlan_arp net/bridge/br_netfilter_hooks.c:108 [inline]
br_nf_forward_finish+0x1cd/0xd00 net/bridge/br_netfilter_hooks.c:643
NF_HOOK+0x5c7/0x640 include/linux/netfilter.h:302
br_nf_forward_ip+0xc5b/0x10c0 net/bridge/br_netfilter_hooks.c:732
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xb9/0x200 net/netfilter/core.c:584
nf_hook include/linux/netfilter.h:257 [inline]
NF_HOOK+0x1f3/0x380 include/linux/netfilter.h:300
__br_forward+0x433/0x610 net/bridge/br_forward.c:115
deliver_clone net/bridge/br_forward.c:131 [inline]
maybe_deliver+0xb5/0x150 net/bridge/br_forward.c:190
br_flood+0x2fc/0x450 net/bridge/br_forward.c:232
br_handle_frame_finish+0x102b/0x1310 net/bridge/br_input.c:180
br_nf_hook_thresh+0x3c9/0x4a0 net/bridge/br_netfilter_hooks.c:1155
br_nf_pre_routing_finish_ipv6+0x958/0xc40 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:302 [inline]
br_nf_pre_routing_ipv6+0x353/0x670 net/bridge/br_netfilter_ipv6.c:237
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:242 [inline]
br_handle_frame+0xec1/0x10d0 net/bridge/br_input.c:384
__netif_receive_skb_core+0xfd5/0x3670 net/core/dev.c:5445
__netif_receive_skb_one_core net/core/dev.c:5549 [inline]
__netif_receive_skb+0x74/0x290 net/core/dev.c:5665
process_backlog+0x366/0x770 net/core/dev.c:6542
__napi_poll+0xbb/0x430 net/core/dev.c:7101
napi_poll net/core/dev.c:7168 [inline]
net_rx_action+0x522/0xa80 net/core/dev.c:7258
handle_softirqs+0x336/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:schedule_debug kernel/sched/core.c:5601 [inline]
RIP: 0010:__schedule+0x155/0x4350 kernel/sched/core.c:6286
Code: f7 48 8b 1b 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 92 3e fc f7 48 81 3b 9d 6e ac 57 <0f> 85 38 13 00 00 83 7c 24 58 00 75 54 49 8d 5f 18 48 89 d8 48 c1
RSP: 0018:ffffc900033ef760 EFLAGS: 00000246
RAX: 1ffff9200067d000 RBX: ffffc900033e8000 RCX: dffffc0000000000
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc900033ef8d0
RBP: ffffc900033ef930 R08: ffffc900033ef8cf R09: ffffc900033ef8c0
R10: dffffc0000000000 R11: fffff5200067df1a R12: ffff8880b9100000
R13: ffffc900033ef8c0 R14: ffff8880b913ad58 R15: ffff888027fd1dc0
preempt_schedule_notrace+0xd9/0x120 kernel/sched/core.c:6650
preempt_schedule_notrace_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:35
trace_lock_acquire include/trace/events/lock.h:13 [inline]
lock_acquire+0x3ed/0x400 kernel/locking/lockdep.c:5594
rcu_lock_acquire+0x20/0x30 include/linux/rcupdate.h:313
rcu_read_lock include/linux/rcupdate.h:740 [inline]
percpu_ref_put_many include/linux/percpu-refcount.h:317 [inline]
percpu_ref_put+0x16/0x150 include/linux/percpu-refcount.h:338
css_put include/linux/cgroup.h:405 [inline]
obj_cgroup_uncharge_pages mm/memcontrol.c:2998 [inline]
refill_obj_stock+0x28f/0x470 mm/memcontrol.c:3259
obj_cgroup_charge+0x1c3/0x320 mm/memcontrol.c:3301
memcg_slab_pre_alloc_hook mm/slab.h:287 [inline]
slab_pre_alloc_hook+0x9d/0xc0 mm/slab.h:497
slab_alloc_node mm/slub.c:3139 [inline]
slab_alloc mm/slub.c:3233 [inline]
kmem_cache_alloc+0x3d/0x280 mm/slub.c:3238
sock_alloc_inode+0x17/0xb0 net/socket.c:305
alloc_inode fs/inode.c:261 [inline]
new_inode_pseudo+0x5f/0x210 fs/inode.c:1001
sock_alloc net/socket.c:628 [inline]
__sock_create+0x128/0x910 net/socket.c:1460
sock_create net/socket.c:1552 [inline]
__sys_socketpair+0x232/0x540 net/socket.c:1656
__do_sys_socketpair net/socket.c:1705 [inline]
__se_sys_socketpair net/socket.c:1702 [inline]
__x64_sys_socketpair+0x97/0xb0 net/socket.c:1702
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fc62407ee59
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:00007fc6222d8028 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007fc6242f7fa0 RCX: 00007fc62407ee59
RDX: 0000000000000003 RSI: 0000000000000002 RDI: 0000000000000022
RBP: 00007fc624114e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc6242f8038 R14: 00007fc6242f7fa0 R15: 00007fff5d841a48
</TASK>
---
This report is generated by a bot. It may contain errors.
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syzbot found the following issue on:
HEAD commit: eceeec79dbc6 Linux 5.15.210
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=16ca9cc1580000
kernel config: https://syzkaller.appspot.com/x/.config?x=6a0cae3abafc69
dashboard link: https://syzkaller.appspot.com/bug?extid=02c2062b24a4563dd4bc
compiler: Debian clang version 22.1.6 (++20260514074242+fc4aad7b5db3-1~exp1~20260514074407.73), Debian LLD 22.1.6
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/0843b8663fe3/disk-eceeec79.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/232e17f9e226/vmlinux-eceeec79.xz
kernel image: https://storage.googleapis.com/syzbot-assets/c70c224634e9/bzImage-eceeec79.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+02c206...@syzkaller.appspotmail.com
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (4844 ticks this GP) idle=b3b/1/0x4000000000000000 softirq=8377/8378 fqs=81
(t=10501 jiffies g=9069 q=1854)
rcu: rcu_preempt kthread starved for 10337 jiffies! g9069 f0x0 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:28112 pid: 15 ppid: 2 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5049 [inline]
__schedule+0x11c3/0x4350 kernel/sched/core.c:6395
schedule+0x11b/0x1e0 kernel/sched/core.c:6478
schedule_timeout+0x184/0x2d0 kernel/time/timer.c:2117
rcu_gp_fqs_loop+0x2be/0x11f0 kernel/rcu/tree.c:1972
rcu_gp_kthread+0x9a/0x370 kernel/rcu/tree.c:2145
kthread+0x42e/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
</TASK>
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: 4832 Comm: syz.9.111 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:212 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:156 [inline]
RIP: 0010:wrmsrl arch/x86/include/asm/msr.h:271 [inline]
RIP: 0010:lapic_next_deadline+0x21/0x40 arch/x86/kernel/apic/apic.c:481
Code: 5b 41 5c 41 5e 41 5f 5d c3 0f ae f0 0f ae e8 0f 31 48 c1 e2 20 48 09 c2 48 8d 04 fa 48 89 c2 48 c1 ea 20 b9 e0 06 00 00 0f 30 <66> 90 31 c0 c3 bf e0 06 00 00 48 89 c6 31 d2 e8 fb 6d d0 02 31 c0
RSP: 0018:ffffc90000006688 EFLAGS: 00000007
RAX: 00000082da2d7d91 RBX: ffff8880b9027280 RCX: 00000000000006e0
RDX: 0000000000000082 RSI: ffff8880b9027280 RDI: 0000000000000551
RBP: 0000000000000000 R08: ffffffff8d89e06f R09: 1ffffffff1b13c0d
R10: dffffc0000000000 R11: fffffbfff1b13c0e R12: dffffc0000000000
R13: 00000000008cccc4 R14: 0000000000000551 R15: 0000000000000019
FS: 00007ff1992626c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d7eb536950 CR3: 0000000022888000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<IRQ>
clockevents_program_event+0x1bc/0x310 kernel/time/clockevents.c:334
hrtimer_interrupt+0x4cb/0x8b0 kernel/time/hrtimer.c:1824
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
__sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:stack_trace_consume_entry+0xef/0x270 kernel/stacktrace.c:93
Code: 8b 74 24 08 48 8b 1f 45 8d 79 01 0f b6 44 15 00 84 c0 0f 85 35 01 00 00 45 89 38 4e 8d 3c cb 4c 89 f8 48 c1 e8 03 80 3c 10 00 <74> 1a 4c 89 ff 48 89 f3 49 89 d4 4c 89 c5 e8 2e a7 56 00 49 89 e8
RSP: 0018:ffffc900000068b8 EFLAGS: 00000246
RAX: 1ffff92000000d73 RBX: ffffc90000006a40 RCX: 0000000000000301
RDX: dffffc0000000000 RSI: ffffffff81b2cf96 RDI: ffffc900000069c0
RBP: 1ffff92000000d3a R08: ffffc900000069d0 R09: 000000000000002b
R10: dffffc0000000000 R11: fffff52000000d2d R12: 0000000000000000
R13: 1ffff92000000d39 R14: ffffc900000069c8 R15: ffffc90000006b98
arch_stack_walk+0x100/0x140 arch/x86/kernel/stacktrace.c:27
stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:46
kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
____kasan_slab_free+0xd5/0x110 mm/kasan/common.c:366
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:1710 [inline]
slab_free_freelist_hook+0xec/0x170 mm/slub.c:1736
slab_free mm/slub.c:3504 [inline]
kmem_cache_free+0x8f/0x210 mm/slub.c:3520
packet_rcv+0x157/0x1260 net/packet/af_packet.c:2243
dev_queue_xmit_nit+0xa48/0xae0 net/core/dev.c:2386
xmit_one net/core/dev.c:3657 [inline]
dev_hard_start_xmit+0x140/0x7d0 net/core/dev.c:3678
sch_direct_xmit+0x24d/0x4a0 net/sched/sch_generic.c:345
__dev_xmit_skb net/core/dev.c:3897 [inline]
__dev_queue_xmit+0x1694/0x2e50 net/core/dev.c:4266
NF_HOOK+0x2fe/0x380 include/linux/netfilter.h:302
arp_xmit+0x142/0x230 net/ipv4/arp.c:643
arp_process+0x159a/0x1ab0 net/ipv4/arp.c:833
NF_HOOK+0x2fe/0x380 include/linux/netfilter.h:302
__netif_receive_skb_list_ptype net/core/dev.c:5599 [inline]
__netif_receive_skb_list_core+0x424/0x770 net/core/dev.c:5632
__netif_receive_skb_list net/core/dev.c:5694 [inline]
netif_receive_skb_list_internal+0x898/0xbd0 net/core/dev.c:5785
gro_normal_list net/core/dev.c:5939 [inline]
gro_normal_one net/core/dev.c:5952 [inline]
napi_skb_finish net/core/dev.c:6289 [inline]
napi_gro_receive+0x4eb/0xa60 net/core/dev.c:6319
receive_buf+0x385e/0x5870 drivers/net/virtio_net.c:1240
virtnet_receive drivers/net/virtio_net.c:1504 [inline]
virtnet_poll+0x511/0xe90 drivers/net/virtio_net.c:1617
__napi_poll+0xbb/0x430 net/core/dev.c:7101
napi_poll net/core/dev.c:7168 [inline]
net_rx_action+0x522/0xa80 net/core/dev.c:7258
handle_softirqs+0x336/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:lock_acquire+0x208/0x400 kernel/locking/lockdep.c:5627
Code: f7 84 24 80 00 00 00 00 02 00 00 43 c6 44 3d 04 f8 0f 85 f1 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 44 3d 00 00 00 00 00 43 c7 44 3d 08 00 00 00 00 65 48 8b 04
RSP: 0018:ffffc900033ff140 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 209001063f312900
RDX: 0000000000000000 RSI: ffffffff8a2b3e80 RDI: ffffffff8a79c980
RBP: ffffc900033ff260 R08: dffffc0000000000 R09: 1ffffffff2039618
R10: dffffc0000000000 R11: fffffbfff2039619 R12: ffffffff8c31ef20
R13: 1ffff9200067fe34 R14: 0000000000000246 R15: dffffc0000000000
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:313
rcu_read_lock include/linux/rcupdate.h:740 [inline]
BPF_PROG_RUN_ARRAY include/linux/bpf.h:1431 [inline]
trace_call_bpf+0xf9/0x5b0 kernel/trace/bpf_trace.c:127
perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10016
perf_trace_lock_acquire+0x341/0x3f0 include/trace/events/lock.h:13
trace_lock_acquire include/trace/events/lock.h:13 [inline]
lock_acquire+0x3d7/0x400 kernel/locking/lockdep.c:5594
rcu_lock_acquire+0x20/0x30 include/linux/rcupdate.h:313
rcu_read_lock include/linux/rcupdate.h:740 [inline]
percpu_ref_put_many include/linux/percpu-refcount.h:317 [inline]
percpu_ref_put include/linux/percpu-refcount.h:338 [inline]
obj_cgroup_put+0xe/0xc0 include/linux/memcontrol.h:816
memcg_slab_free_hook+0x6e/0x1e0 mm/slab.h:367
do_slab_free mm/slub.c:3437 [inline]
___cache_free+0x63/0x120 mm/slub.c:3511
qlist_free_all+0x35/0x90 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x150/0x160 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0x2f/0xc0 mm/kasan/common.c:444
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook+0x4c/0x380 mm/slab.h:519
slab_alloc_node mm/slub.c:3225 [inline]
kmem_cache_alloc_node_trace+0x194/0x2f0 mm/slub.c:3275
kmalloc_node include/linux/slab.h:625 [inline]
kzalloc_node include/linux/slab.h:749 [inline]
__get_vm_area_node+0x119/0x2d0 mm/vmalloc.c:2423
__vmalloc_node_range+0xef/0x8b0 mm/vmalloc.c:3027
__vmalloc_node mm/vmalloc.c:3087 [inline]
__vmalloc+0x76/0x80 mm/vmalloc.c:3101
bpf_prog_alloc_no_stats+0x36/0x2c0 kernel/bpf/core.c:90
bpf_prog_alloc+0x1a/0x1e0 kernel/bpf/core.c:124
bpf_prog_load+0x7d1/0x14e0 kernel/bpf/syscall.c:2301
__sys_bpf+0x532/0x6f0 kernel/bpf/syscall.c:4657
__do_sys_bpf kernel/bpf/syscall.c:4761 [inline]
__se_sys_bpf kernel/bpf/syscall.c:4759 [inline]
__x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4759
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7ff19b029e59
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:00007ff199262028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007ff19b2a3090 RCX: 00007ff19b029e59
RDX: 0000000000000080 RSI: 00002000000012c0 RDI: 0000000000000005
RBP: 00007ff19b0bfe6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff19b2a3128 R14: 00007ff19b2a3090 R15: 00007ffcb0d03c08
</TASK>
NMI backtrace for cpu 1
CPU: 1 PID: 4797 Comm: syz.7.103 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
<IRQ>
dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
nmi_cpu_backtrace+0x3a2/0x3d0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
rcu_dump_cpu_stacks+0x22d/0x380 kernel/rcu/tree_stall.h:349
print_cpu_stall+0x31f/0x5f0 kernel/rcu/tree_stall.h:633
check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
rcu_pending kernel/rcu/tree.c:3936 [inline]
rcu_sched_clock_irq+0x6ec/0x1120 kernel/rcu/tree.c:2619
update_process_times+0x193/0x200 kernel/time/timer.c:2021
tick_sched_handle kernel/time/tick-sched.c:254 [inline]
tick_sched_timer+0x37d/0x560 kernel/time/tick-sched.c:1473
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4b0/0xb60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x397/0x8b0 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
__sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:migrate_disable+0xaf/0x180 kernel/sched/core.c:2161
Code: 20 00 74 08 4c 89 ff e8 1f 98 6b 00 49 c7 c6 50 b0 03 00 4d 03 37 4c 89 f0 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 89 00 00 00 <41> ff 06 43 0f b6 44 25 00 84 c0 0f 85 96 00 00 00 66 c7 03 01 00
RSP: 0018:ffffc90000dcf968 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888027fd21f8 RCX: cb2b82a6747e1c00
RDX: 0000000000000100 RSI: ffffffff8a79c960 RDI: ffffffff8a79c920
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff8880b91351c8
R10: dffffc0000000000 R11: fffffbfff1b13c0e R12: dffffc0000000000
R13: 1ffff11004ffa43f R14: ffff8880b913b050 R15: ffffffff8be2d828
BPF_PROG_RUN_ARRAY include/linux/bpf.h:1430 [inline]
trace_call_bpf+0xef/0x5b0 kernel/trace/bpf_trace.c:127
perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10016
perf_trace_lock_acquire+0x341/0x3f0 include/trace/events/lock.h:13
trace_lock_acquire include/trace/events/lock.h:13 [inline]
lock_acquire+0x3d7/0x400 kernel/locking/lockdep.c:5594
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:313
rcu_read_lock include/linux/rcupdate.h:740 [inline]
net_generic+0x1a/0x200 include/net/netns/generic.h:44
is_vlan_arp net/bridge/br_netfilter_hooks.c:108 [inline]
br_nf_forward_finish+0x1cd/0xd00 net/bridge/br_netfilter_hooks.c:643
NF_HOOK+0x5c7/0x640 include/linux/netfilter.h:302
br_nf_forward_ip+0xc5b/0x10c0 net/bridge/br_netfilter_hooks.c:732
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xb9/0x200 net/netfilter/core.c:584
nf_hook include/linux/netfilter.h:257 [inline]
NF_HOOK+0x1f3/0x380 include/linux/netfilter.h:300
__br_forward+0x433/0x610 net/bridge/br_forward.c:115
deliver_clone net/bridge/br_forward.c:131 [inline]
maybe_deliver+0xb5/0x150 net/bridge/br_forward.c:190
br_flood+0x2fc/0x450 net/bridge/br_forward.c:232
br_handle_frame_finish+0x102b/0x1310 net/bridge/br_input.c:180
br_nf_hook_thresh+0x3c9/0x4a0 net/bridge/br_netfilter_hooks.c:1155
br_nf_pre_routing_finish_ipv6+0x958/0xc40 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:302 [inline]
br_nf_pre_routing_ipv6+0x353/0x670 net/bridge/br_netfilter_ipv6.c:237
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:242 [inline]
br_handle_frame+0xec1/0x10d0 net/bridge/br_input.c:384
__netif_receive_skb_core+0xfd5/0x3670 net/core/dev.c:5445
__netif_receive_skb_one_core net/core/dev.c:5549 [inline]
__netif_receive_skb+0x74/0x290 net/core/dev.c:5665
process_backlog+0x366/0x770 net/core/dev.c:6542
__napi_poll+0xbb/0x430 net/core/dev.c:7101
napi_poll net/core/dev.c:7168 [inline]
net_rx_action+0x522/0xa80 net/core/dev.c:7258
handle_softirqs+0x336/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:schedule_debug kernel/sched/core.c:5601 [inline]
RIP: 0010:__schedule+0x155/0x4350 kernel/sched/core.c:6286
Code: f7 48 8b 1b 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 92 3e fc f7 48 81 3b 9d 6e ac 57 <0f> 85 38 13 00 00 83 7c 24 58 00 75 54 49 8d 5f 18 48 89 d8 48 c1
RSP: 0018:ffffc900033ef760 EFLAGS: 00000246
RAX: 1ffff9200067d000 RBX: ffffc900033e8000 RCX: dffffc0000000000
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc900033ef8d0
RBP: ffffc900033ef930 R08: ffffc900033ef8cf R09: ffffc900033ef8c0
R10: dffffc0000000000 R11: fffff5200067df1a R12: ffff8880b9100000
R13: ffffc900033ef8c0 R14: ffff8880b913ad58 R15: ffff888027fd1dc0
preempt_schedule_notrace+0xd9/0x120 kernel/sched/core.c:6650
preempt_schedule_notrace_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:35
trace_lock_acquire include/trace/events/lock.h:13 [inline]
lock_acquire+0x3ed/0x400 kernel/locking/lockdep.c:5594
rcu_lock_acquire+0x20/0x30 include/linux/rcupdate.h:313
rcu_read_lock include/linux/rcupdate.h:740 [inline]
percpu_ref_put_many include/linux/percpu-refcount.h:317 [inline]
percpu_ref_put+0x16/0x150 include/linux/percpu-refcount.h:338
css_put include/linux/cgroup.h:405 [inline]
obj_cgroup_uncharge_pages mm/memcontrol.c:2998 [inline]
refill_obj_stock+0x28f/0x470 mm/memcontrol.c:3259
obj_cgroup_charge+0x1c3/0x320 mm/memcontrol.c:3301
memcg_slab_pre_alloc_hook mm/slab.h:287 [inline]
slab_pre_alloc_hook+0x9d/0xc0 mm/slab.h:497
slab_alloc_node mm/slub.c:3139 [inline]
slab_alloc mm/slub.c:3233 [inline]
kmem_cache_alloc+0x3d/0x280 mm/slub.c:3238
sock_alloc_inode+0x17/0xb0 net/socket.c:305
alloc_inode fs/inode.c:261 [inline]
new_inode_pseudo+0x5f/0x210 fs/inode.c:1001
sock_alloc net/socket.c:628 [inline]
__sock_create+0x128/0x910 net/socket.c:1460
sock_create net/socket.c:1552 [inline]
__sys_socketpair+0x232/0x540 net/socket.c:1656
__do_sys_socketpair net/socket.c:1705 [inline]
__se_sys_socketpair net/socket.c:1702 [inline]
__x64_sys_socketpair+0x97/0xb0 net/socket.c:1702
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fc62407ee59
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:00007fc6222d8028 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007fc6242f7fa0 RCX: 00007fc62407ee59
RDX: 0000000000000003 RSI: 0000000000000002 RDI: 0000000000000022
RBP: 00007fc624114e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc6242f8038 R14: 00007fc6242f7fa0 R15: 00007fff5d841a48
</TASK>
---
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