bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:26:8b:1d:40:69, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:26:8b:1d:40:69, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:26:8b:1d:40:69, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5844/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=37409, q=243 ncpus=2)
task:syz-executor state:R running task stack:21640 pid:5844 tgid:5844 ppid:5832 task_flags:0x400140 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5397 [inline]
__schedule+0x16aa/0x4c90 kernel/sched/core.c:6786
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7109
irqentry_exit+0x6f/0x90 kernel/entry/common.c:307
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:unwind_next_frame+0x521/0x2390 arch/x86/kernel/unwind_orc.c:512
Code: 63 18 00 00 0f b7 1e c1 eb 0b 80 e3 01 48 8b 44 24 28 0f b6 04 28 84 c0 4c 8b 7c 24 70 0f 85 6d 18 00 00 48 8b 44 24 10 88 18 <0f> b7 1e 83 e3 0f 83 fb 05 0f 8f 85 00 00 00 83 fb 03 0f 8f 01 01
RSP: 0018:ffffc9000413f3f8 EFLAGS: 00000246
RAX: ffffc9000413f4fd RBX: 0000000000000000 RCX: ffffffff8fb74a88
RDX: ffffffff90344772 RSI: ffffffff90344776 RDI: ffffffff8be1ba20
RBP: dffffc0000000000 R08: 000000000000000d R09: ffffffff8172aae5
R10: ffffc9000413f518 R11: ffffffff81acfd40 R12: ffffffff90344777
R13: ffffc9000413f518 R14: ffffc9000413f4c8 R15: ffffc9000413f500
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
save_stack+0xf7/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:308
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0xc65/0xe60 mm/page_alloc.c:2706
discard_slab mm/slub.c:2717 [inline]
__put_partials+0x161/0x1c0 mm/slub.c:3186
put_cpu_partial+0x17c/0x250 mm/slub.c:3261
__slab_free+0x2f7/0x400 mm/slub.c:4513
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_kmalloc+0x22/0xb0 mm/kasan/common.c:385
kasan_kmalloc include/linux/kasan.h:260 [inline]
__do_kmalloc_node mm/slub.c:4328 [inline]
__kmalloc_noprof+0x27a/0x4f0 mm/slub.c:4340
kmalloc_noprof include/linux/slab.h:909 [inline]
tomoyo_realpath_from_path+0xe3/0x5d0 security/tomoyo/realpath.c:251
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x213/0x4b0 security/tomoyo/file.c:822
security_inode_getattr+0x12f/0x330 security/security.c:2377
vfs_getattr fs/stat.c:259 [inline]
vfs_fstat fs/stat.c:281 [inline]
vfs_fstatat+0xb1/0x170 fs/stat.c:373
__do_sys_newfstatat fs/stat.c:542 [inline]
__se_sys_newfstatat fs/stat.c:536 [inline]
__x64_sys_newfstatat+0x116/0x190 fs/stat.c:536
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4f90d8d1ba
RSP: 002b:00007ffce2fe39b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4f90d8d1ba
RDX: 00007ffce2fe39c0 RSI: 00007f4f90e4dc22 RDI: 0000000000000003
RBP: 00007ffce2fe39c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000206 R12: 00007ffce2fe4bc0
R13: 00007f4f90e10b55 R14: 000000000008a340 R15: 00007ffce2fe4c00
rcu: rcu_preempt kthread starved for 1735 jiffies! g37409 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:27128 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5397 [inline]
__schedule+0x16aa/0x4c90 kernel/sched/core.c:6786
__schedule_loop kernel/sched/core.c:6864 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6879
schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2054
rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2256
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 5194 Comm: klogd Not tainted 6.16.0-rc7-syzkaller-00120-g5f33ebd2018c #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:lock_is_held_type+0x144/0x190 kernel/locking/lockdep.c:5948
Code: 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 05 f9 02 36 07 48 3b 44 24 08 75 43 89 d8 48 83 c4 10 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 90 0f 0b 90 48 c7
RSP: 0018:ffffc90002f974f8 EFLAGS: 00000282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: e5d648e8a3de4900
RDX: 0000000000000000 RSI: ffffffff8db6fcfe RDI: ffffffff8be1ba80
RBP: 00000000ffffffff R08: ffff88801c822b57 R09: 1ffff1100390456a
R10: dffffc0000000000 R11: ffffed100390456b R12: 0000000000000246
R13: ffff88807c683c00 R14: ffffffff8e8cf888 R15: 0000000000000001
FS: 00007f620fa87c80(0000) GS:ffff888125d57000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000011e030 CR3: 0000000033792000 CR4: 00000000003526f0
Call Trace:
lock_is_held include/linux/lockdep.h:249 [inline]
depot_fetch_stack+0x31/0xc0 lib/stackdepot.c:448
dec_stack_record_count mm/page_owner.c:222 [inline]
__reset_page_owner+0xd0/0x1f0 mm/page_owner.c:320
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0xc65/0xe60 mm/page_alloc.c:2706
discard_slab mm/slub.c:2717 [inline]
__put_partials+0x161/0x1c0 mm/slub.c:3186
put_cpu_partial+0x17c/0x250 mm/slub.c:3261
__slab_free+0x2f7/0x400 mm/slub.c:4513
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4148 [inline]
slab_alloc_node mm/slub.c:4197 [inline]
kmem_cache_alloc_node_noprof+0x1bb/0x3c0 mm/slub.c:4249
__alloc_skb+0x112/0x2d0 net/core/skbuff.c:660
alloc_skb include/linux/skbuff.h:1336 [inline]
alloc_skb_with_frags+0xca/0x890 net/core/skbuff.c:6665
sock_alloc_send_pskb+0x857/0x990 net/core/sock.c:2999
unix_dgram_sendmsg+0x451/0x17d0 net/unix/af_unix.c:2083
sock_sendmsg_nosec net/socket.c:712 [inline]
__sock_sendmsg+0x21c/0x270 net/socket.c:727
__sys_sendto+0x3bd/0x520 net/socket.c:2180
__do_sys_sendto net/socket.c:2187 [inline]
__se_sys_sendto net/socket.c:2183 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2183
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f620fbd7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffd78409900 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f620fa87c80 RCX: 00007f620fbd7407
RDX: 00000000000000a1 RSI: 00007ffd78409a40 RDI: 0000000000000003
RBP: 00007ffd78409e70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffd78409e88
R13: 00007ffd78409a40 R14: 0000000000000086 R15: 00007ffd78409a40
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:26:8b:1d:40:69, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:26:8b:1d:40:69, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:26:8b:1d:40:69, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:26:8b:1d:40:69, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:26:8b:1d:40:69, vlan:0)
net_ratelimit: 11889 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:26:8b:1d:40:69, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:26:8b:1d:40:69, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:26:8b:1d:40:69, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:26:8b:1d:40:69, vlan:0)