bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_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): P12855/1:b..l
rcu: (detected by 1, t=10620 jiffies, g=56585, q=522 ncpus=2)
task:syz.0.1742 state:R running task stack:22536 pid:12855 tgid:12854 ppid:5613 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7276
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7598
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x910 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:unwind_next_frame+0x46e/0x2550 arch/x86/kernel/unwind_orc.c:520
Code: d1 48 89 15 44 2c 21 12 48 85 d2 0f 84 2e 02 00 00 48 8d 5a 04 48 89 54 24 18 4c 8d 6a 05 48 89 d8 48 c1 e8 03 42 0f b6 04 20 <84> c0 0f 85 b4 19 00 00 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0
RSP: 0018:ffffc9000dd065a0 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: ffffffff919c5a8a RCX: ffffffff90ef91bc
RDX: ffffffff919c5a86 RSI: ffffffff919c5a86 RDI: ffffffff8c6d9c20
RBP: ffffffff89b06476 R08: 0000000000000003 R09: 0000000000000000
R10: ffffc9000dd06698 R11: ffffffff81b285f0 R12: dffffc0000000000
R13: ffffffff919c5a8b R14: ffffc9000dd06648 R15: ffffffff90ef91bc
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:57 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:253 [inline]
__kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2748 [inline]
slab_free mm/slub.c:6499 [inline]
kmem_cache_free+0x182/0x650 mm/slub.c:6626
netlink_broadcast_filtered+0xd9d/0xea0 net/netlink/af_netlink.c:1541
nlmsg_multicast_filtered include/net/netlink.h:1165 [inline]
nlmsg_multicast include/net/netlink.h:1184 [inline]
nlmsg_notify+0xe3/0x1a0 net/netlink/af_netlink.c:2599
netif_state_change+0x297/0x3a0 net/core/dev.c:1627
do_setlink+0x3c57/0x4670 net/core/rtnetlink.c:3518
rtnl_group_changelink net/core/rtnetlink.c:3924 [inline]
__rtnl_newlink net/core/rtnetlink.c:4090 [inline]
rtnl_newlink+0x146f/0x1c30 net/core/rtnetlink.c:4220
rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7137
netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x7bd/0x940 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
sock_sendmsg_nosec+0x13a/0x180 net/socket.c:800
__sock_sendmsg net/socket.c:815 [inline]
____sys_sendmsg+0x54e/0x850 net/socket.c:2713
___sys_sendmsg+0x2a5/0x360 net/socket.c:2767
__sys_sendmsg net/socket.c:2799 [inline]
__do_sys_sendmsg net/socket.c:2804 [inline]
__se_sys_sendmsg net/socket.c:2802 [inline]
__x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2802
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff5c119e159
RSP: 002b:00007ff5c2080028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ff5c1425fa0 RCX: 00007ff5c119e159
RDX: 0000000000000000 RSI: 0000200000000040 RDI: 0000000000000003
RBP: 00007ff5c123503b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff5c1426038 R14: 00007ff5c1425fa0 R15: 00007ffcc3607d38
rcu: rcu_preempt kthread starved for 1101 jiffies! g56585 f0x0 RCU_GP_WAIT_FQS(5) ->state=R ->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:27496 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7276
__schedule_loop kernel/sched/core.c:7353 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7368
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2122
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2330
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
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: 5619 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:csd_lock_wait kernel/smp.c:363 [inline]
RIP: 0010:smp_call_function_many_cond+0x1132/0x1500 kernel/smp.c:1002
Code: 78 44 8b 2b 44 89 ee 83 e6 01 31 ff e8 47 49 0c 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 32 44 0c 00 eb 35 f3 90 <43> 0f b6 04 2c 84 c0 75 0f f7 03 01 00 00 00 74 1d e8 18 44 0c 00
RSP: 0018:ffffc90003aaf420 EFLAGS: 00000293
RAX: ffffffff81bb8698 RBX: ffff8880b87414c8 RCX: ffff888035518000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003aaf570 R08: ffffffff907a327f R09: 1ffffffff20f464f
R10: dffffc0000000000 R11: fffffbfff20f4650 R12: 1ffff110170e8299
R13: dffffc0000000000 R14: 1ffff11006aa32b3 R15: 0000000000000001
FS: 0000555560c3e500(0000) GS:ffff888124cd2000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f888cb556c8 CR3: 000000005c9fa000 CR4: 00000000003526f0
Call Trace:
__flush_tlb_multi arch/x86/include/asm/paravirt.h:46 [inline]
flush_tlb_multi arch/x86/mm/tlb.c:1361 [inline]
flush_tlb_mm_range+0x8ff/0x1090 arch/x86/mm/tlb.c:1435
dup_mmap+0x1758/0x1dc0 mm/mmap.c:1884
dup_mm kernel/fork.c:1543 [inline]
copy_mm+0x11a/0x480 kernel/fork.c:1595
copy_process+0x1e75/0x43e0 kernel/fork.c:2307
kernel_clone+0x2d7/0x940 kernel/fork.c:2766
__do_sys_clone kernel/fork.c:2908 [inline]
__se_sys_clone kernel/fork.c:2892 [inline]
__x64_sys_clone+0x1b6/0x230 kernel/fork.c:2892
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe3673c6bd2
Code: 89 e7 e8 71 8b f7 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 89 c5 85 c0 75 3b 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffd82044a00 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffd82044a00 RCX: 00007fe3673c6bd2
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffd82044b8c R08: 0000000000000000 R09: 0000000000000001
R10: 0000555560c3e7d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 000000000004ece9 R15: 00007ffd82044be0