bridge0: received packet on veth1_to_bridge with own address as source address (addr:4e:44:29:9e:04:89, vlan:0)
bridge0: received packet on bridge_slave_1 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): P10866/1:b..l.. P10838/1:b..l.. P5634/1:b..l..
rcu: (detected by 1, t=10502 jiffies, g=43221, q=1696 ncpus=2)
task:syz-executor state:R running task stack:21800 pid:5634 tgid:5634 ppid:1 task_flags:0x40054c flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x17dd/0x5830 kernel/sched/core.c:7382
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7662
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:543 [inline]
irqentry_exit+0x14f/0x9b0 kernel/entry/common.c:154
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x232/0x350 kernel/locking/lockdep.c:5947
Code: ff ff ff e8 20 e9 5e 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 22 23 1c 13 48 3b 44 24 50 75 33 fb 48 83 c4 58 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 3f fc 61 0a cc 48 8d 3d a7 95 fc
RSP: 0018:ffffc900044a72a8 EFLAGS: 00000282
RAX: 48105be174db9f00 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 00000000d982211c RSI: ffffffff8e92daec RDI: ffffffff8c8e8c80
RBP: ffff88807f288000 R08: ffffffff822b3329 R09: 0000000000000000
R10: ffffc900044a75e0 R11: fffff52000894ebe R12: ffffffff8ff5a320
R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
__pte_offset_map+0x45/0x240 mm/pgtable-generic.c:302
pte_offset_map_lock+0x46/0x210 mm/pgtable-generic.c:419
zap_pte_range mm/memory.c:2014 [inline]
zap_pmd_range mm/memory.c:2114 [inline]
zap_pud_range mm/memory.c:2142 [inline]
zap_p4d_range mm/memory.c:2163 [inline]
__zap_vma_range+0xe27/0x4f70 mm/memory.c:2203
unmap_vmas+0x38b/0x550 mm/memory.c:2272
exit_mmap+0x290/0xa40 mm/mmap.c:1315
__mmput+0x118/0x420 kernel/fork.c:1192
exit_mm+0x18e/0x240 kernel/exit.c:586
do_exit+0x6a8/0x2360 kernel/exit.c:967
do_group_exit+0x22d/0x2f0 kernel/exit.c:1123
get_signal+0x1216/0x12c0 kernel/signal.c:3112
arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdfa716034e
RSP: 002b:00007ffc86ccaea8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: 0000000000000000 RBX: 00005555693d6500 RCX: 00007fdfa716034e
RDX: 00007ffc86ccaf00 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffc86ccaf6c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000000e7
R13: 0000000000000042 R14: 000000000004c040 R15: 00007ffc86ccafc0
task:syz.0.1232 state:R running task stack:26440 pid:10838 tgid:10835 ppid:5634 task_flags:0x40054c flags:0x00080002
Call Trace:
task:syz.1.1236 state:R running task stack:25576 pid:10866 tgid:10866 ppid:5644 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x17dd/0x5830 kernel/sched/core.c:7382
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7662
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:543 [inline]
irqentry_exit+0x14f/0x9b0 kernel/entry/common.c:154
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x232/0x350 kernel/locking/lockdep.c:5947
Code: ff ff ff e8 20 e9 5e 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 22 23 1c 13 48 3b 44 24 50 75 33 fb 48 83 c4 58 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 3f fc 61 0a cc 48 8d 3d a7 95 fc
RSP: 0018:ffffc9001d107120 EFLAGS: 00000292
RAX: 8af4ac4f8080f800 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 00000000c719f98b RSI: ffffffff8e92daec RDI: ffffffff8c8e8c80
RBP: ffff88802cae3e80 R08: ffffffff81b216cd R09: 0000000000000000
R10: ffffc9001d107238 R11: ffffffff81b3a880 R12: ffffffff8ff5a320
R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
class_rcu_constructor include/linux/rcupdate.h:1216 [inline]
is_module_text_address+0x39/0x1e0 kernel/module/main.c:3957
kernel_text_address+0x94/0xe0 kernel/extable.c:119
__kernel_text_address+0xd/0x30 kernel/extable.c:79
unwind_get_return_address+0x4d/0x90 arch/x86/kernel/unwind_orc.c:385
arch_stack_walk+0xfb/0x150 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
save_stack+0x122/0x230 mm/page_owner.c:183
__reset_page_owner+0x73/0x2a0 mm/page_owner.c:338
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1403 [inline]
__free_frozen_pages+0xc97/0xd90 mm/page_alloc.c:2954
__slab_free+0x269/0x2c0 mm/slub.c:5926
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:361
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4720 [inline]
slab_alloc_node mm/slub.c:5033 [inline]
kmem_cache_alloc_noprof+0x2b4/0x600 mm/slub.c:5047
alloc_pid+0x1a4/0x1340 kernel/pid.c:188
copy_process+0x217d/0x44b0 kernel/fork.c:2336
kernel_clone+0x2d7/0x940 kernel/fork.c:2784
__do_sys_clone3 kernel/fork.c:3087 [inline]
__se_sys_clone3+0x33c/0x360 kernel/fork.c:3066
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: 0033:0x7f3ba5da0909
RSP: 002b:00007ffeadc5bbc8 EFLAGS: 00000206 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007f3ba5d5bea0 RCX: 00007f3ba5da0909
RDX: 00007f3ba5d5bea0 RSI: 0000000000000058 RDI: 00007ffeadc5bc20
RBP: 00007f3ba6d116c0 R08: 00007f3ba6d116c0 R09: 00007ffeadc5bd07
R10: 0000000000000008 R11: 0000000000000206 R12: ffffffffffffffe8
R13: 000000000000000b R14: 00007ffeadc5bc20 R15: 00007ffeadc5bd08
rcu: rcu_preempt kthread starved for 1246 jiffies! g43221 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:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x17dd/0x5830 kernel/sched/core.c:7382
__schedule_loop kernel/sched/core.c:7459 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7474
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x1230 kernel/rcu/tree.c:2122
rcu_gp_kthread+0x9c/0x340 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: 8172 Comm: kworker/u8:21 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
Workqueue: krds_cp_wq#6/4 rds_send_worker
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x5b/0xb0 kernel/rcu/tree.c:753
Code: f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 4b 7f 92 00 48 c7 c3 98 7d c1 94 49 03 1e 48 89 d8 48 c1 e8 03 42 0f b6 04 38 <84> c0 75 35 8b 03 65 48 ff 0d d7 cb 12 13 74 11 83 e0 04 c1 e8 02
RSP: 0018:ffffc900000070a8 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: ffff8880b8233d98 RCX: 8000000000000102
RDX: ffff88802d469f40 RSI: ffffffff8c8e8c60 RDI: ffffffff8c8e8c20
RBP: 0000000000000001 R08: 0000000000000100 R09: ffffc90000007410
R10: ffffc90000007260 R11: fffff52000000e4e R12: 0000000000000003
R13: ffff8880576cd8c8 R14: ffffffff8e9777d0 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff88812361c000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556c0844e8 CR3: 000000000fd48000 CR4: 00000000003526f0
Call Trace:
rcu_read_lock_held_common kernel/rcu/update.c:109 [inline]
rcu_read_lock_held+0x15/0x50 kernel/rcu/update.c:349
__in6_dev_get include/net/addrconf.h:351 [inline]
ip6_ignore_linkdown+0x66/0x140 include/net/addrconf.h:460
find_match+0x9c/0xb40 net/ipv6/route.c:806
__find_rr_leaf+0x243/0x740 net/ipv6/route.c:895
find_rr_leaf net/ipv6/route.c:916 [inline]
rt6_select net/ipv6/route.c:960 [inline]
fib6_table_lookup+0x3c6/0xae0 net/ipv6/route.c:2247
ip6_pol_route+0x229/0x14d0 net/ipv6/route.c:2284
pol_lookup_func include/net/ip6_fib.h:672 [inline]
__fib6_rule_action net/ipv6/fib6_rules.c:240 [inline]
fib6_rule_action+0x9d8/0xc00 net/ipv6/fib6_rules.c:278
fib_rules_lookup+0x770/0xeb0 net/core/fib_rules.c:338
fib6_rule_lookup+0x19b/0x6e0 net/ipv6/fib6_rules.c:115
ip6_route_input_lookup net/ipv6/route.c:2355 [inline]
ip6_route_input+0x78d/0xb20 net/ipv6/route.c:2658
ip6_rcv_finish+0x141/0x280 net/ipv6/ip6_input.c:117
NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:325
__netif_receive_skb_one_core net/core/dev.c:6435 [inline]
__netif_receive_skb net/core/dev.c:6548 [inline]
process_backlog+0x795/0x18b0 net/core/dev.c:6899
__napi_poll+0xaa/0x330 net/core/dev.c:7985
napi_poll net/core/dev.c:8048 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8205
handle_softirqs+0x265/0x8d0 kernel/softirq.c:669
do_softirq+0x77/0xd0 kernel/softirq.c:569
__local_bh_enable_ip+0x100/0x140 kernel/softirq.c:473
lock_sock include/net/sock.h:1717 [inline]
tcp_sock_set_cork+0x2c/0x2d0 net/ipv4/tcp.c:3663
rds_send_xmit+0x20cf/0x2930 net/rds/send.c:508
rds_send_worker+0x7d/0x2e0 net/rds/threads.c:200
process_one_work kernel/workqueue.c:3495 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3578
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3659
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