bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5890/1:b..l P5639/1:b..l P5648/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=27461, q=1207 ncpus=2)
task:syz-executor state:R running task stack:22408 pid:5648 tgid:5648 ppid:5631 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1821/0x5740 kernel/sched/core.c:7189
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7513
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8b0 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:unwind_next_frame+0x1a19/0x2550 arch/x86/kernel/unwind_orc.c:694
Code: 28 84 c0 0f 85 6a 08 00 00 b3 01 8b 84 24 8c 00 00 00 41 39 06 4c 8b 7c 24 50 48 8b 7c 24 78 0f 85 54 01 00 00 48 8b 44 24 58 <80> 3c 28 00 74 05 e8 5c 13 ba 00 4d 8b 66 38 49 8d 7e 08 48 89 f8
RSP: 0018:ffffc90003e27778 EFLAGS: 00000246
RAX: 1ffff920007c4f10 RBX: ffffffff90d31b01 RCX: 0000000000000001
RDX: ffffc90003e27888 RSI: dffffc0000000000 RDI: ffffc90003e27880
RBP: dffffc0000000000 R08: ffffc90003e27af8 R09: 0000000000000000
R10: ffffc90003e27898 R11: fffff520007c4f15 R12: ffffc90003e27af8
R13: 1ffff920007c4f0b R14: ffffc90003e27848 R15: ffffffff8176e256
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
save_stack+0x122/0x230 mm/page_owner.c:165
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0xc1c/0xd30 mm/page_alloc.c:2938
__slab_free+0x274/0x2c0 mm/slub.c:5613
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:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4570 [inline]
slab_alloc_node mm/slub.c:4899 [inline]
kmem_cache_alloc_noprof+0x2bc/0x650 mm/slub.c:4906
sk_prot_alloc+0x57/0x210 net/core/sock.c:2246
sk_alloc+0x3a/0x390 net/core/sock.c:2308
inet_create+0x7a0/0x1000 net/ipv4/af_inet.c:333
__sock_create+0x4b2/0x9d0 net/socket.c:1665
sock_create net/socket.c:1723 [inline]
__sys_socket_create net/socket.c:1760 [inline]
__sys_socket+0xd6/0x1b0 net/socket.c:1807
__do_sys_socket net/socket.c:1821 [inline]
__se_sys_socket net/socket.c:1819 [inline]
__x64_sys_socket+0x7a/0x90 net/socket.c:1819
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcf48b9e6c7
RSP: 002b:00007ffe12cf2418 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fcf48b9e6c7
RDX: 0000000000000006 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 00007ffe12cf2b4c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00007fcf48deafc0
R13: 000055557e1c6a00 R14: 0000000000024871 R15: 00007fcf48ded180
task:syz-executor state:R running task stack:22488 pid:5639 tgid:5639 ppid:5632 task_flags:0x400140 flags:0x00080001
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1821/0x5740 kernel/sched/core.c:7189
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7513
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8b0 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__read_once_word_nocheck+0x0/0x10 include/asm-generic/rwonce.h:67
Code: 66 fc b9 00 48 ba 00 00 00 00 00 fc ff df e9 88 fc ff ff 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <48> 8b 07 e9 88 56 33 0a cc cc cc cc cc cc cc cc 90 90 90 90 90 90
RSP: 0018:ffffc90003e16f58 EFLAGS: 00000202
RAX: ffffc90003e17501 RBX: ffffc90003e10000 RCX: 0000000000000001
RDX: ffffc90003e170c8 RSI: dffffc0000000000 RDI: ffffc90003e17538
RBP: 1ffff920007c2e11 R08: ffffc90003e17538 R09: 0000000000000000
R10: ffffc90003e170d8 R11: fffff520007c2e1d R12: 1ffff920007c2e12
R13: 1ffff920007c2e13 R14: ffffc90003e18000 R15: dffffc0000000000
deref_stack_reg+0x19f/0x230 arch/x86/kernel/unwind_orc.c:422
unwind_next_frame+0x19d5/0x2550 arch/x86/kernel/unwind_orc.c:-1
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
save_stack+0x122/0x230 mm/page_owner.c:165
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0xc1c/0xd30 mm/page_alloc.c:2938
__slab_free+0x274/0x2c0 mm/slub.c:5613
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_kmalloc+0x22/0xb0 mm/kasan/common.c:406
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5296 [inline]
__kmalloc_noprof+0x35c/0x760 mm/slub.c:5308
kmalloc_noprof include/linux/slab.h:954 [inline]
kzalloc_noprof include/linux/slab.h:1188 [inline]
tomoyo_encode2 security/tomoyo/realpath.c:45 [inline]
tomoyo_encode+0x28b/0x550 security/tomoyo/realpath.c:80
tomoyo_realpath_from_path+0x58d/0x5d0 security/tomoyo/realpath.c:283
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_check_open_permission+0x229/0x470 security/tomoyo/file.c:776
security_file_open+0xa9/0x240 security/security.c:2739
do_dentry_open+0x4a8/0x13a0 fs/open.c:924
vfs_open+0x3b/0x340 fs/open.c:1079
do_open fs/namei.c:4699 [inline]
path_openat+0x2e08/0x3860 fs/namei.c:4858
do_file_open+0x23e/0x4a0 fs/namei.c:4887
do_sys_openat2+0x113/0x200 fs/open.c:1364
do_sys_open fs/open.c:1370 [inline]
__do_sys_openat fs/open.c:1386 [inline]
__se_sys_openat fs/open.c:1381 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1381
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0500d9c17c
RSP: 002b:00007ffd26afd830 EFLAGS: 00000206 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f0500e321ca RCX: 00007f0500d9c17c
RDX: 0000000000090800 RSI: 00007ffd26afe9e0 RDI: 00000000ffffff9c
RBP: 00007ffd26afe9cc R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffd26afe9e0
R13: 00007f0500e321ca R14: 0000000000026c84 R15: 00007ffd26afea20
task:kworker/u8:13 state:R running task stack:23216 pid:5890 tgid:5890 ppid:2 task_flags:0x24248060 flags:0x00080000
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1821/0x5740 kernel/sched/core.c:7189
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7513
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8b0 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x221/0x350 kernel/locking/lockdep.c:5872
Code: ff ff ff e8 31 cf 05 0a f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 0b 5a 96 11 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d 18 ec 91
RSP: 0018:ffffc90004f361c8 EFLAGS: 00000282
RAX: d904a25cffc70800 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 00000000532a7f7e RSI: ffffffff8e21733d RDI: ffffffff8c28b8e0
RBP: ffffffff821d2059 R08: ffffffff821d2059 R09: ffffffff8e95cc20
R10: dffffc0000000000 R11: ffffed100f65602d R12: 0000000000000002
R13: ffffffff8e95cc20 R14: 0000000000000000 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
__pte_offset_map+0x45/0x240 mm/pgtable-generic.c:290
pte_offset_map_lock+0x46/0x210 mm/pgtable-generic.c:400
map_pte mm/page_vma_mapped.c:24 [inline]
page_vma_mapped_walk+0x10d0/0x1dd0 mm/page_vma_mapped.c:288
page_vma_mkclean_one+0x352/0x780 mm/rmap.c:1118
page_mkclean_one+0x1d8/0x2b0 mm/rmap.c:1186
__rmap_walk_file+0x467/0x620 mm/rmap.c:3064
rmap_walk mm/rmap.c:3108 [inline]
folio_mkclean+0x2bb/0x3d0 mm/rmap.c:1218
folio_clear_dirty_for_io+0x1a5/0x710 mm/page-writeback.c:2905
mpage_submit_folio+0x86/0x2b0 fs/ext4/inode.c:2084
mpage_process_page_bufs+0x6d5/0x8e0 fs/ext4/inode.c:2214
mpage_prepare_extent_to_map+0xe1b/0x16f0 fs/ext4/inode.c:2753
ext4_do_writepages+0xbac/0x4670 fs/ext4/inode.c:2894
ext4_writepages+0x241/0x3b0 fs/ext4/inode.c:3042
do_writepages+0x32e/0x550 mm/page-writeback.c:2571
__writeback_single_inode+0x133/0x10e0 fs/fs-writeback.c:1764
writeback_sb_inodes+0x979/0x19d0 fs/fs-writeback.c:2056
__writeback_inodes_wb+0x111/0x240 fs/fs-writeback.c:2132
wb_writeback+0x459/0xb00 fs/fs-writeback.c:2243
wb_check_old_data_flush fs/fs-writeback.c:2347 [inline]
wb_do_writeback fs/fs-writeback.c:2400 [inline]
wb_workfn+0xb12/0xf10 fs/fs-writeback.c:2428
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
kthread+0x389/0x470 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: rcu_preempt kthread starved for 6380 jiffies! g27461 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:27536 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1821/0x5740 kernel/sched/core.c:7189
__schedule_loop kernel/sched/core.c:7268 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7283
schedule_timeout+0x158/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x312/0x11d0 kernel/rcu/tree.c:2095
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2297
kthread+0x389/0x470 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: 3218 Comm: kworker/R-krxrp Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: krxrpcd rxrpc_peer_keepalive_worker
RIP: 0010:rcu_read_lock_held_common kernel/rcu/update.c:105 [inline]
RIP: 0010:rcu_read_lock_held+0x5/0x50 kernel/rcu/update.c:349
Code: c3 cc cc cc cc cc 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 53 c6 a0 fd 09 85 c0 74 26 31 db e8 0b f3 00 00 84 c0 74 20 e8 42
RSP: 0018:ffffc90000006f10 EFLAGS: 00000202
RAX: ffffffff8a511734 RBX: ffff88808cffd8c0 RCX: 0000000000000100
RDX: ffff8880320abe00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000007000 R08: ffffffff903033f7 R09: 1ffffffff206067e
R10: dffffc0000000000 R11: ffffffff8a5113f0 R12: dffffc0000000000
R13: ffff888032864d80 R14: 0000000000000001 R15: ffff888028d5c000
FS: 0000000000000000(0000) GS:ffff8881252a0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fefb8000218 CR3: 0000000074f3c000 CR4: 00000000003526f0
Call Trace:
read_pnet_rcu include/net/net_namespace.h:428 [inline]
dev_net_rcu include/linux/netdevice.h:2770 [inline]
skb_dst_dev_net_rcu include/net/dst.h:607 [inline]
ip6_mc_input+0x34e/0xbd0 net/ipv6/ip6_input.c:561
ip_sabotage_in+0x1e1/0x270 net/bridge/br_netfilter_hooks.c:988
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:619
nf_hook include/linux/netfilter.h:273 [inline]
NF_HOOK+0x21f/0x3c0 include/linux/netfilter.h:316
__netif_receive_skb_one_core net/core/dev.c:6202 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
netif_receive_skb_internal net/core/dev.c:6401 [inline]
netif_receive_skb+0x278/0xbf0 net/core/dev.c:6460
NF_HOOK+0xa4/0x3a0 include/linux/netfilter.h:318
br_handle_frame_finish+0x1541/0x1c80 net/bridge/br_input.c:-1
br_nf_hook_thresh+0x3dd/0x4c0 net/bridge/br_netfilter_hooks.c:-1
br_nf_pre_routing_finish_ipv6+0x91f/0xc30 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:318 [inline]
br_nf_pre_routing_ipv6+0x374/0x6f0 net/bridge/br_netfilter_ipv6.c:183
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
br_handle_frame+0x1277/0x1510 net/bridge/br_input.c:442
__netif_receive_skb_core+0x98f/0x3170 net/core/dev.c:6089
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6666
__napi_poll+0xae/0x340 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7953
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
spin_unlock_bh include/linux/spinlock.h:396 [inline]
rxrpc_peer_keepalive_worker+0x462/0xe30 net/rxrpc/peer_event.c:352
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
rescuer_thread+0x827/0x1130 kernel/workqueue.c:3621
kthread+0x389/0x470 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
net_ratelimit: 14766 callbacks suppressed
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ba:3a:e7:74:13:38, vlan:0)
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 veth1_to_bridge with own address as source address (addr:ba:3a:e7:74:13:38, 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 veth1_to_bridge with own address as source address (addr:ba:3a:e7:74:13:38, 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 veth1_to_bridge with own address as source address (addr:ba:3a:e7:74:13:38, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ba:3a:e7:74:13:38, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ba:3a:e7:74:13:38, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ba:3a:e7:74:13:38, vlan:0)
net_ratelimit: 17833 callbacks suppressed
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ba:3a:e7:74:13:38, vlan:0)
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 veth1_to_bridge with own address as source address (addr:ba:3a:e7:74:13:38, 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 veth1_to_bridge with own address as source address (addr:ba:3a:e7:74:13:38, 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 veth1_to_bridge with own address as source address (addr:ba:3a:e7:74:13:38, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ba:3a:e7:74:13:38, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ba:3a:e7:74:13:38, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ba:3a:e7:74:13:38, vlan:0)