bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P2/2:b..l P5178/2:b..l
rcu: (detected by 1, t=10503 jiffies, g=15977, q=514 ncpus=2)
task:syslogd state:R running task stack:25528 pid:5178 tgid:5178 ppid:1 task_flags:0x400000 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7090
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__rcu_read_lock+0xb8/0xf0 kernel/rcu/tree_plugin.h:416
Code: 48 8b 1d 63 06 04 12 48 8d bb 44 04 00 00 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 1f <8b> 83 44 04 00 00 3d ff ff ff 3f 7f 07 5b 5d c3 cc cc cc cc 90 0f
RSP: 0018:ffffc9000417f260 EFLAGS: 00000246
RAX: 0000000000000007 RBX: ffff88806e1c0000 RCX: ffffc9000417f23c
RDX: 0000000000000000 RSI: ffffffff8235941b RDI: ffff88806e1c0444
RBP: ffff88806e1c0000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000013583 R12: ffffffff81a6e4a0
R13: ffffc9000417f2e8 R14: 0000000000000000 R15: ffff88806e1c0000
rcu_read_lock include/linux/rcupdate.h:839 [inline]
class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
unwind_next_frame+0xae/0x20a0 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
save_stack+0x160/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x8d/0x400 mm/page_owner.c:303
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1130 [inline]
__free_frozen_pages+0x69d/0xf90 mm/page_alloc.c:2707
discard_slab mm/slub.c:2707 [inline]
__put_partials+0x16d/0x1c0 mm/slub.c:3176
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4138 [inline]
slab_alloc_node mm/slub.c:4187 [inline]
__do_kmalloc_node mm/slub.c:4317 [inline]
__kmalloc_noprof+0x1d4/0x510 mm/slub.c:4330
kmalloc_noprof include/linux/slab.h:906 [inline]
tomoyo_realpath_from_path+0xc2/0x6e0 security/tomoyo/realpath.c:251
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_check_open_permission+0x2ab/0x3c0 security/tomoyo/file.c:771
tomoyo_file_open+0x6b/0x90 security/tomoyo/tomoyo.c:334
security_file_open+0x84/0x1e0 security/security.c:3114
do_dentry_open+0x596/0x1c10 fs/open.c:933
vfs_open+0x82/0x3f0 fs/open.c:1086
do_open fs/namei.c:3845 [inline]
path_openat+0x1e5e/0x2d40 fs/namei.c:4004
do_filp_open+0x20b/0x470 fs/namei.c:4031
do_sys_openat2+0x11b/0x1d0 fs/open.c:1429
do_sys_open fs/open.c:1444 [inline]
__do_sys_openat fs/open.c:1460 [inline]
__se_sys_openat fs/open.c:1455 [inline]
__x64_sys_openat+0x174/0x210 fs/open.c:1455
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa3679979a4
RSP: 002b:00007ffc9ff5d7b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055c2085b02c0 RCX: 00007fa3679979a4
RDX: 0000000000000d41 RSI: 00007fa367b36443 RDI: 00000000ffffff9c
RBP: 00007fa367b36443 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000000001b6 R11: 0000000000000246 R12: 0000000000000d41
R13: 0000000067eb2833 R14: 0000000000000004 R15: 000055c2085b0410
task:kthreadd state:R running task stack:26536 pid:2 tgid:2 ppid:0 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7090
irqentry_exit+0x36/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:rcu_is_watching+0x82/0xc0 kernel/rcu/tree.c:739
Code: 48 c1 ea 03 0f b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 24 8b 03 c1 e8 02 83 e0 01 65 ff 0d e0 f0 03 12 74 07 <5b> 5d c3 cc cc cc cc e8 72 68 8b ff 5b 5d c3 cc cc cc cc 48 89 df
RSP: 0018:ffffc90000077478 EFLAGS: 00000286
RAX: 0000000000000001 RBX: ffff8880b8532de8 RCX: 0000000000000002
RDX: 0000000000000000 RSI: ffffffff8bf420a0 RDI: ffffffff8dcf0cc8
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000007a9f R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
trace_lock_acquire include/trace/events/lock.h:24 [inline]
lock_acquire+0x2cd/0x350 kernel/locking/lockdep.c:5829
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:841 [inline]
class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
unwind_next_frame+0xd1/0x20a0 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
save_stack+0x160/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x8d/0x400 mm/page_owner.c:303
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1130 [inline]
__free_frozen_pages+0x69d/0xf90 mm/page_alloc.c:2707
discard_slab mm/slub.c:2707 [inline]
__put_partials+0x16d/0x1c0 mm/slub.c:3176
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4138 [inline]
slab_alloc_node mm/slub.c:4187 [inline]
kmem_cache_alloc_noprof+0x1cb/0x3b0 mm/slub.c:4194
copy_signal+0x50/0x840 kernel/fork.c:1874
copy_process+0x28b5/0x9130 kernel/fork.c:2396
kernel_clone+0xfc/0x960 kernel/fork.c:2814
kernel_thread+0xd4/0x120 kernel/fork.c:2876
create_kthread kernel/kthread.c:487 [inline]
kthreadd+0x503/0x800 kernel/kthread.c:847
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: rcu_preempt kthread starved for 8731 jiffies! g15977 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:28728 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6860
schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1ea/0xb00 kernel/rcu/tree.c:2046
rcu_gp_kthread+0x270/0x380 kernel/rcu/tree.c:2248
kthread+0x3c2/0x780 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.14.0-syzkaller-11125-g609706855d90 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:unwind_next_frame+0xf4/0x20a0 arch/x86/kernel/unwind_orc.c:482
Code: 3b 8e e8 af 3b 2e 00 e8 3a ac 04 0a 5a 85 c0 0f 85 57 09 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8d 65 50 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 ee 17 00 00 4d 8b 75 50 4d 85 f6 74 36 49 8d be
RSP: 0018:ffffc90000006eb8 EFLAGS: 00000a02
RAX: dffffc0000000000 RBX: 0000000000000002 RCX: 00000000c639c71c
RDX: 1ffff92000000def RSI: ffffffff8bf420a0 RDI: ffffffff8dcf0cc0
RBP: ffffc90000006f70 R08: f501fefe41178ce3 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc90000006f78
R13: ffffc90000006f28 R14: 0000000000000000 R15: ffffffff8e097740
FS: 0000000000000000(0000) GS:ffff8881249d4000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffefb30fb40 CR3: 0000000071842000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:319 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:345
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4138 [inline]
slab_alloc_node mm/slub.c:4187 [inline]
kmem_cache_alloc_noprof+0x1cb/0x3b0 mm/slub.c:4194
skb_clone+0x190/0x3f0 net/core/skbuff.c:2056
deliver_clone net/bridge/br_forward.c:125 [inline]
maybe_deliver+0xd4/0x180 net/bridge/br_forward.c:190
br_flood+0x17c/0x650 net/bridge/br_forward.c:237
br_handle_frame_finish+0xe8e/0x1c20 net/bridge/br_input.c:220
br_nf_hook_thresh+0x301/0x410 net/bridge/br_netfilter_hooks.c:1170
br_nf_pre_routing_finish_ipv6+0x76a/0xfb0 net/bridge/br_netfilter_ipv6.c:154
NF_HOOK include/linux/netfilter.h:314 [inline]
br_nf_pre_routing_ipv6+0x3cd/0x8c0 net/bridge/br_netfilter_ipv6.c:184
br_nf_pre_routing+0x860/0x15b0 net/bridge/br_netfilter_hooks.c:508
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:282 [inline]
br_handle_frame+0xad5/0x14a0 net/bridge/br_input.c:433
__netif_receive_skb_core.constprop.0+0xa23/0x4a00 net/core/dev.c:5777
__netif_receive_skb_one_core+0xb0/0x1e0 net/core/dev.c:5889
__netif_receive_skb+0x1d/0x160 net/core/dev.c:6004
process_backlog+0x442/0x15e0 net/core/dev.c:6356
__napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:7328
napi_poll net/core/dev.c:7392 [inline]
net_rx_action+0xa97/0x1010 net/core/dev.c:7514
handle_softirqs+0x216/0x8e0 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0x109/0x170 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline]
RIP: 0010:acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:112
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 65 48 8b 05 70 20 36 08 48 8b 00 a8 08 75 0c 66 90 0f 00 2d 48 e9 90 00 fb f4 c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffffff8e007d68 EFLAGS: 00000246
RAX: 0000000000004000 RBX: 0000000000000001 RCX: ffffffff8b6e82d9
RDX: 0000000000000001 RSI: ffff888141ade000 RDI: ffff888141ade064
RBP: ffff888141ade064 R08: 0000000000000001 R09: ffffed10170865bd
R10: ffff8880b8432deb R11: 0000000000000000 R12: ffff88801f7dd000
R13: ffffffff8f0418a0 R14: 0000000000000000 R15: 0000000000000000
acpi_idle_enter+0xc5/0x160 drivers/acpi/processor_idle.c:701
cpuidle_enter_state+0xb2/0x500 drivers/cpuidle/cpuidle.c:268
cpuidle_enter+0x4e/0xa0 drivers/cpuidle/cpuidle.c:389
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:230 [inline]
do_idle+0x378/0x510 kernel/sched/idle.c:325
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:423
rest_init+0x16b/0x2b0 init/main.c:743
start_kernel+0x3e9/0x4d0 init/main.c:1099
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:513
x86_64_start_kernel+0xb0/0xc0 arch/x86/kernel/head64.c:494
common_startup_64+0x13e/0x148
net_ratelimit: 24324 callbacks suppressed
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:57:66:8d:b1:a3, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:57:66:8d:b1:a3, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:57:66:8d:b1:a3, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:57:66:8d:b1:a3, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:57:66:8d:b1:a3, vlan:0)
net_ratelimit: 29907 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:57:66:8d:b1:a3, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:57:66:8d:b1:a3, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:57:66:8d:b1:a3, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:57:66:8d:b1:a3, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:57:66:8d:b1:a3, vlan:0)