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): P12655/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=49465, q=270 ncpus=2)
task:syz.4.3551 state:R running task stack:25824 pid:12655 tgid:12655 ppid:5232 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0xef5/0x5750 kernel/sched/core.c:6675
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:6997
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:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:write_comp_data+0x11/0x90 kernel/kcov.c:246
Code: cc cc cc cc 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 49 89 d2 49 89 f8 49 89 f1 65 48 8b 15 9f c5 76 7e <65> 8b 05 a0 c5 76 7e a9 00 01 ff 00 74 1d f6 c4 01 74 67 a9 00 00
RSP: 0018:ffffc90018c5f510 EFLAGS: 00000246
RAX: 0000000000000007 RBX: ffff88805dc09188 RCX: ffffffff8448f667
RDX: ffff888029215a00 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffffc90018c5f6a0 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000800 R11: 0000000000000000 R12: 0000000000000800
R13: 0000000000000600 R14: ffffc90018c5f6a0 R15: dffffc0000000000
avtab_search_node+0x67/0x4b0 security/selinux/ss/avtab.c:184
cond_compute_av+0x59/0x340 security/selinux/ss/conditional.c:584
context_struct_compute_av+0x839/0x1270 security/selinux/ss/services.c:669
security_compute_av+0x48f/0xfd0 security/selinux/ss/services.c:1140
avc_compute_av+0x86/0x5c0 security/selinux/avc.c:986
avc_perm_nonode+0xaa/0x170 security/selinux/avc.c:1110
avc_has_perm_noaudit+0x2d2/0x3a0 security/selinux/avc.c:1153
avc_has_perm+0xc1/0x1c0 security/selinux/avc.c:1188
security_task_alloc+0xf7/0x260 security/security.c:3161
copy_process+0x24cf/0x8dc0 kernel/fork.c:2357
kernel_clone+0xfd/0x960 kernel/fork.c:2787
__do_sys_clone3+0x1f5/0x270 kernel/fork.c:3091
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7faf75bb2029
RSP: 002b:00007fff5be78e08 EFLAGS: 00000206 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007faf75b34960 RCX: 00007faf75bb2029
RDX: 00007faf75b34960 RSI: 0000000000000058 RDI: 00007fff5be78e50
RBP: 00007faf769386c0 R08: 00007faf769386c0 R09: 00007fff5be78f37
R10: 0000000000000008 R11: 0000000000000206 R12: ffffffffffffffa8
R13: 000000000000000b R14: 00007fff5be78e50 R15: 00007fff5be78f38
rcu: rcu_preempt kthread starved for 10466 jiffies! g49465 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:27696 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0xef5/0x5750 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6767
schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2615
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2045
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2247
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 25 Comm: kworker/1:0 Not tainted 6.11.0-syzkaller-11728-gad46e8f95e93 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:debug_lockdep_rcu_enabled+0x0/0x40 kernel/rcu/update.c:319
Code: 00 00 00 eb b6 e8 30 fa ff ff eb b6 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 8b 05 0a 08 3e 05 85 c0 74 20 8b 05 34 3a 3e 05 85 c0
RSP: 0018:ffffc90000a183e0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffff89c8fe2f
RDX: ffff88801d6f9e00 RSI: ffffffff89c8fe43 RDI: 0000000000000001
RBP: ffffc90000a184d0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88807c29accf
R13: 1ffff92000143088 R14: ffff88807c29acb8 R15: ffff888031a37000
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555591116588 CR3: 000000007db5c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_lock_held_common kernel/rcu/update.c:105 [inline]
rcu_read_lock_held+0x9/0x50 kernel/rcu/update.c:349
__in6_dev_get include/net/addrconf.h:330 [inline]
ip6_ignore_linkdown include/net/addrconf.h:421 [inline]
find_match+0x368/0xf80 net/ipv6/route.c:744
__find_rr_leaf+0x141/0xe00 net/ipv6/route.c:832
find_rr_leaf net/ipv6/route.c:853 [inline]
rt6_select net/ipv6/route.c:897 [inline]
fib6_table_lookup+0x57e/0xa30 net/ipv6/route.c:2195
ip6_pol_route+0x1cd/0x1120 net/ipv6/route.c:2231
pol_lookup_func include/net/ip6_fib.h:616 [inline]
fib6_rule_lookup+0x536/0x720 net/ipv6/fib6_rules.c:117
ip6_route_input_lookup net/ipv6/route.c:2300 [inline]
ip6_route_input+0x663/0xc10 net/ipv6/route.c:2596
ip6_rcv_finish_core.constprop.0+0x1a0/0x5d0 net/ipv6/ip6_input.c:66
ip6_rcv_finish net/ipv6/ip6_input.c:77 [inline]
NF_HOOK include/linux/netfilter.h:314 [inline]
NF_HOOK include/linux/netfilter.h:308 [inline]
ipv6_rcv+0x1e4/0x680 net/ipv6/ip6_input.c:309
__netif_receive_skb_one_core+0x12e/0x1e0 net/core/dev.c:5662
__netif_receive_skb+0x1d/0x160 net/core/dev.c:5775
process_backlog+0x443/0x15f0 net/core/dev.c:6107
__napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6771
napi_poll net/core/dev.c:6840 [inline]
net_rx_action+0xa92/0x1010 net/core/dev.c:6962
handle_softirqs+0x213/0x8f0 kernel/softirq.c:554
do_softirq kernel/softirq.c:455 [inline]
do_softirq+0xb2/0xf0 kernel/softirq.c:442
__local_bh_enable_ip+0x100/0x120 kernel/softirq.c:382
spin_unlock_bh include/linux/spinlock.h:396 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:820 [inline]
nsim_dev_trap_report_work+0x870/0xc80 drivers/net/netdevsim/dev.c:850
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
net_ratelimit: 19882 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 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: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 veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)