bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:2b:af:66:d6:c7, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P13618/1:b..l P13573/1:b..l P5826/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=71997, q=781 ncpus=1)
task:syz-executor state:R running task stack:23608 pid:5826 tgid:5826 ppid:5823 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5260 [inline]
__schedule+0xfe4/0x5e10 kernel/sched/core.c:6867
preempt_schedule_common+0x42/0xc0 kernel/sched/core.c:7051
preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
copy_pte_range mm/memory.c:1331 [inline]
copy_pmd_range mm/memory.c:1392 [inline]
copy_pud_range mm/memory.c:1429 [inline]
copy_p4d_range mm/memory.c:1453 [inline]
copy_page_range+0x1ddc/0x6ba0 mm/memory.c:1539
dup_mmap+0xbea/0x1e20 mm/mmap.c:1827
dup_mm kernel/fork.c:1529 [inline]
copy_mm kernel/fork.c:1581 [inline]
copy_process+0x7451/0x7890 kernel/fork.c:2221
kernel_clone+0xfc/0x930 kernel/fork.c:2651
__do_sys_clone+0xd9/0x120 kernel/fork.c:2792
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdd5b1c3952
RSP: 002b:00007ffed5e75db0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffed5e75db0 RCX: 00007fdd5b1c3952
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffed5e75f3c R08: 0000000000000000 R09: 0000000000000001
R10: 00005555850e07d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 000000000008966a R15: 00007ffed5e75f90
task:dhcpcd-run-hook state:R running task stack:25736 pid:13573 tgid:13573 ppid:5491 task_flags:0x40000c flags:0x00080001
Call Trace:
context_switch kernel/sched/core.c:5260 [inline]
__schedule+0xfe4/0x5e10 kernel/sched/core.c:6867
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7194
irqentry_exit+0x17b/0x670 kernel/entry/common.c:216
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x8/0x330 kernel/locking/lockdep.c:5828
Code: d4 c2 8d 67 48 0f b9 3a e9 28 fc ff ff 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 <41> 89 f6 41 55 45 89 c5 41 54 41 89 cc 55 48 89 fd 53 89 d3 48 83
RSP: 0018:ffffc90003d6f768 EFLAGS: 00000246
RAX: ffffffff81b6408d RBX: 0000000000000001 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e5e3120
RBP: ffffc90003d6f840 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000200 R11: 000000000000ad59 R12: ffffffff81f10c60
R13: ffffc90003d6f7f8 R14: 0000000000000000 R15: ffff88802ba81e80
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:867 [inline]
class_rcu_constructor include/linux/rcupdate.h:1195 [inline]
unwind_next_frame+0xd1/0x1ea0 arch/x86/kernel/unwind_orc.c:495
arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_record_aux_stack+0xa7/0xc0 mm/kasan/generic.c:556
slab_free_hook mm/slub.c:2501 [inline]
slab_free mm/slub.c:6674 [inline]
kmem_cache_free+0x478/0x720 mm/slub.c:6785
exit_mmap+0x4d1/0xae0 mm/mmap.c:1302
__mmput+0x12a/0x410 kernel/fork.c:1173
mmput+0x67/0x80 kernel/fork.c:1196
exit_mm kernel/exit.c:581 [inline]
do_exit+0x78a/0x2a30 kernel/exit.c:959
do_group_exit+0xd5/0x2a0 kernel/exit.c:1112
__do_sys_exit_group kernel/exit.c:1123 [inline]
__se_sys_exit_group kernel/exit.c:1121 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1121
x64_sys_call+0x14fd/0x1510 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8914eae6c5
RSP: 002b:00007fffbdd1d2a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000055a37f8fc910 RCX: 00007f8914eae6c5
RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000000
RBP: 00007fffbdd1d5d8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffbdd1d5d0
R13: 00007fffbdd1d5e0 R14: 00007f89150be000 R15: 000055a34bd68d98
task:syz.3.1496 state:R running task stack:23792 pid:13618 tgid:13618 ppid:5826 task_flags:0x400640 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5260 [inline]
__schedule+0xfe4/0x5e10 kernel/sched/core.c:6867
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7194
irqentry_exit+0x17b/0x670 kernel/entry/common.c:216
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:688
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:231 [inline]
RIP: 0010:unwind_next_frame+0x2c2/0x1ea0 arch/x86/kernel/unwind_orc.c:510
Code: cf 8b 14 95 7c d0 0e 92 48 8d 04 7f 48 8d 84 00 a0 56 4b 91 83 c2 01 48 3d 7a d0 0e 92 0f 83 7e 09 00 00 41 89 d0 4f 8d 04 40 <4f> 8d 84 00 a0 56 4b 91 49 81 f8 7a d0 0e 92 0f 87 62 09 00 00 29
RSP: 0018:ffffc9000397e398 EFLAGS: 00000293
RAX: ffffffff91632c94 RBX: 0000000000000001 RCX: 000000000003f8fe
RDX: 000000000003f904 RSI: 00000000000a7802 RDI: 000000000003f8fe
RBP: ffffc9000397e450 R08: 00000000000beb0c R09: 0000000000000007
R10: 0000000000000200 R11: 0000000000016c9c R12: ffffc9000397e458
R13: ffffc9000397e408 R14: ffffc9000397e43d R15: ffffffff826c9c45
arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
save_stack+0x162/0x1e0 mm/page_owner.c:165
__set_page_owner+0x8c/0x540 mm/page_owner.c:341
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1e1/0x250 mm/page_alloc.c:1884
prep_new_page mm/page_alloc.c:1892 [inline]
get_page_from_freelist+0xe3d/0x2e10 mm/page_alloc.c:3945
__alloc_frozen_pages_noprof+0x26c/0x2410 mm/page_alloc.c:5240
alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2486
folio_alloc_mpol_noprof+0x36/0x340 mm/mempolicy.c:2505
shmem_alloc_folio+0x135/0x160 mm/shmem.c:1890
shmem_alloc_and_add_folio+0x371/0xd40 mm/shmem.c:1932
shmem_get_folio_gfp+0x6ab/0x1900 mm/shmem.c:2556
shmem_get_folio mm/shmem.c:2662 [inline]
shmem_write_begin+0x1a4/0x420 mm/shmem.c:3315
generic_perform_write+0x292/0xa40 mm/filemap.c:4314
shmem_file_write_iter+0x10e/0x140 mm/shmem.c:3490
__kernel_write_iter+0x2ac/0x920 fs/read_write.c:619
dump_emit_page fs/coredump.c:1298 [inline]
dump_user_range+0x3f9/0xb50 fs/coredump.c:1372
elf_core_dump+0x2d16/0x3c60 fs/binfmt_elf.c:2111
coredump_write fs/coredump.c:1049 [inline]
do_coredump fs/coredump.c:1126 [inline]
vfs_coredump+0x276c/0x5530 fs/coredump.c:1200
get_signal+0x1f2a/0x21e0 kernel/signal.c:3019
arch_do_signal_or_restart+0x91/0x770 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
exit_to_user_mode_loop kernel/entry/common.c:75 [inline]
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline]
irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline]
irqentry_exit+0x1f8/0x670 kernel/entry/common.c:196
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x6000000
RSP: 002b:0000000000000009 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fdd5b416090 RCX: 00007fdd5b19aeb9
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 00007fdd5b208c1f R08: 0000000000000002 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdd5b416128 R14: 00007fdd5b416090 R15: 00007ffed5e75b98
rcu: rcu_preempt kthread starved for 346 jiffies! g71997 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:28296 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5260 [inline]
__schedule+0xfe4/0x5e10 kernel/sched/core.c:6867
__schedule_loop kernel/sched/core.c:6949 [inline]
schedule+0xdd/0x390 kernel/sched/core.c:6964
schedule_timeout+0x127/0x280 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1a9/0xb00 kernel/rcu/tree.c:2083
rcu_gp_kthread+0x21e/0x320 kernel/rcu/tree.c:2285
kthread+0x3b3/0x730 kernel/kthread.c:463
ret_from_fork+0x754/0xaf0 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 3411 Comm: kworker/R-bat_e Tainted: G U L syzkaller #0 PREEMPT(full)
Tainted: [U]=USER, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Workqueue: bat_events batadv_tt_purge
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210
Code: 46 0c 58 00 48 89 df 5b e9 2d 7f 5d 00 be 03 00 00 00 5b e9 32 a5 de 02 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 65 8b 05 a5 85 dd 11 48 8b 34 24 65 48 8b 15 81 85 dd
RSP: 0018:ffffc90000006968 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8a212df8
RDX: 000000000000000d RSI: 0000000000000000 RDI: ffff888031a9db80
RBP: ffff888033c7c8c8 R08: 0000000000000005 R09: 0000000000000000
R10: 000000000000000d R11: 0000000000000000 R12: 000000000000000d
R13: 0000000000000003 R14: 0000000000000000 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881245e3000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b9c4bb3a38 CR3: 000000000e392000 CR4: 00000000003526f0
Call Trace:
rt6_score_route+0x36/0xa60 net/ipv6/route.c:753
find_match net/ipv6/route.c:785 [inline]
__find_rr_leaf+0x270/0x1070 net/ipv6/route.c:868
find_rr_leaf net/ipv6/route.c:889 [inline]
rt6_select net/ipv6/route.c:933 [inline]
fib6_table_lookup+0x50f/0xa10 net/ipv6/route.c:2244
ip6_pol_route+0x1cc/0x1230 net/ipv6/route.c:2280
pol_lookup_func include/net/ip6_fib.h:617 [inline]
fib6_rule_lookup+0x52f/0x720 net/ipv6/fib6_rules.c:120
ip6_route_input_lookup net/ipv6/route.c:2349 [inline]
ip6_route_input+0x662/0xc50 net/ipv6/route.c:2652
ip6_rcv_finish_core.isra.0+0x1a9/0x5a0 net/ipv6/ip6_input.c:66
ip6_rcv_finish+0x130/0x550 net/ipv6/ip6_input.c:77
ip_sabotage_in+0x21e/0x290 net/bridge/br_netfilter_hooks.c:990
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_slow+0xbf/0x220 net/netfilter/core.c:623
nf_hook.constprop.0+0x2a6/0x750 include/linux/netfilter.h:273
NF_HOOK include/linux/netfilter.h:316 [inline]
ipv6_rcv+0xa4/0x610 net/ipv6/ip6_input.c:311
__netif_receive_skb_one_core+0x12d/0x1e0 net/core/dev.c:6152
__netif_receive_skb+0x1f/0x120 net/core/dev.c:6265
netif_receive_skb_internal net/core/dev.c:6351 [inline]
netif_receive_skb+0x139/0x760 net/core/dev.c:6410
NF_HOOK include/linux/netfilter.h:318 [inline]
NF_HOOK include/linux/netfilter.h:312 [inline]
br_pass_frame_up+0x346/0x490 net/bridge/br_input.c:70
br_handle_frame_finish+0x84f/0x1f00 net/bridge/br_input.c:235
br_nf_hook_thresh+0x30d/0x420 net/bridge/br_netfilter_hooks.c:1167
br_nf_pre_routing_finish_ipv6+0x769/0xfb0 net/bridge/br_netfilter_ipv6.c:154
NF_HOOK include/linux/netfilter.h:318 [inline]
br_nf_pre_routing_ipv6+0x39c/0x8b0 net/bridge/br_netfilter_ipv6.c:184
br_nf_pre_routing+0x93b/0x1510 net/bridge/br_netfilter_hooks.c:508
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
br_handle_frame+0xa68/0x1510 net/bridge/br_input.c:442
__netif_receive_skb_core.constprop.0+0x6d7/0x3460 net/core/dev.c:6039
__netif_receive_skb_one_core+0xb0/0x1e0 net/core/dev.c:6150
__netif_receive_skb+0x1f/0x120 net/core/dev.c:6265
process_backlog+0x37a/0x1580 net/core/dev.c:6617
__napi_poll.constprop.0+0xaf/0x450 net/core/dev.c:7681
napi_poll net/core/dev.c:7744 [inline]
net_rx_action+0xa40/0xf20 net/core/dev.c:7896
handle_softirqs+0x1ea/0x910 kernel/softirq.c:622
do_softirq kernel/softirq.c:523 [inline]
do_softirq+0xac/0xe0 kernel/softirq.c:510
__local_bh_enable_ip+0xf8/0x120 kernel/softirq.c:450
spin_unlock_bh include/linux/spinlock.h:396 [inline]
batadv_tt_local_purge+0x21c/0x3d0 net/batman-adv/translation-table.c:1315
batadv_tt_purge+0x8b/0xbd0 net/batman-adv/translation-table.c:3509
process_one_work+0x9c2/0x1840 kernel/workqueue.c:3257
process_scheduled_works kernel/workqueue.c:3340 [inline]
rescuer_thread+0x8f1/0xf40 kernel/workqueue.c:3528
kthread+0x3b3/0x730 kernel/kthread.c:463
ret_from_fork+0x754/0xaf0 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
net_ratelimit: 9734 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:2b:af:66:d6:c7, 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 bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, 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:be:2b:af:66:d6:c7, 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 bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, 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:be:2b:af:66:d6:c7, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
net_ratelimit: 9358 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:2b:af:66:d6:c7, 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 bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, 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:be:2b:af:66:d6:c7, 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 bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, 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:be:2b:af:66:d6:c7, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)