bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:15:23:0c:60:d6, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5183/1:b..l P3353/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=260997, q=1025 ncpus=2)
task:syz-executor state:R running task stack:23992 pid:3353 tgid:3353 ppid:3348 task_flags:0x400140 flags:0x00080001
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6929
preempt_schedule_notrace+0x62/0xe0 kernel/sched/core.c:7206
preempt_schedule_notrace_thunk+0x16/0x30 arch/x86/entry/thunk.S:13
rcu_lockdep_current_cpu_online+0x110/0x150 kernel/rcu/tree.c:4042
rcu_read_lock_held_common kernel/rcu/update.c:113 [inline]
rcu_read_lock_held+0x27/0x50 kernel/rcu/update.c:349
lookup_page_ext+0x10d/0x1d0 mm/page_ext.c:254
page_ext_iter_begin include/linux/page_ext.h:132 [inline]
__page_table_check_zero+0x1a4/0x5d0 mm/page_table_check.c:139
page_table_check_free include/linux/page_table_check.h:43 [inline]
free_pages_prepare mm/page_alloc.c:1395 [inline]
free_unref_folios+0xa4f/0x1610 mm/page_alloc.c:2963
folios_put_refs+0x4be/0x750 mm/swap.c:1002
folio_batch_release include/linux/pagevec.h:101 [inline]
shmem_undo_range+0x58f/0x1150 mm/shmem.c:1120
shmem_truncate_range mm/shmem.c:1232 [inline]
shmem_evict_inode+0x3a1/0xbe0 mm/shmem.c:1360
evict+0x3e6/0x920 fs/inode.c:810
iput_final fs/inode.c:1914 [inline]
iput.part.0+0x6a9/0xb00 fs/inode.c:1966
iput+0x35/0x40 fs/inode.c:1929
do_unlinkat+0x518/0x6a0 fs/namei.c:4744
__do_sys_unlink fs/namei.c:4783 [inline]
__se_sys_unlink fs/namei.c:4781 [inline]
__x64_sys_unlink+0xc5/0x110 fs/namei.c:4781
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f26e9b8ec77
RSP: 002b:00007fff08ffcec8 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f26e9b8ec77
RDX: 00007fff08ffcef0 RSI: 00007fff08ffcf80 RDI: 00007fff08ffcf80
RBP: 00007fff08ffcf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 00007fff08ffe010
R13: 00007f26e9c11d7d R14: 000000000016926f R15: 00007fff08ffe050
task:udevd state:R running task stack:24728 pid:5183 tgid:5183 ppid:1 task_flags:0x400140 flags:0x00080001
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6929
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7256
irqentry_exit+0x36/0x90 kernel/entry/common.c:211
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:kasan_check_byte include/linux/kasan.h:401 [inline]
RIP: 0010:lock_acquire kernel/locking/lockdep.c:5842 [inline]
RIP: 0010:lock_acquire+0xef/0x350 kernel/locking/lockdep.c:5825
Code: 41 57 44 89 e9 44 89 f2 48 89 de e8 ab d0 fe ff 5f 41 58 65 ff 0d f1 e5 08 12 0f 85 4f ff ff ff e8 76 1c 93 ff e9 45 ff ff ff <48> 8b 74 24 68 48 89 df e8 e4 93 8c 00 8b 0d f2 78 e9 0e 85 c9 0f
RSP: 0018:ffffc90003f7f468 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffffff8e3c4760 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff8dcd5ee8
RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 00000000000355b6 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:867 [inline]
class_rcu_constructor include/linux/rcupdate.h:1195 [inline]
unwind_next_frame+0xd1/0x20a0 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
save_stack+0x160/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x84/0x1a0 mm/page_owner.c:311
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1394 [inline]
__free_frozen_pages+0x7df/0x1160 mm/page_alloc.c:2906
discard_slab mm/slub.c:3330 [inline]
__put_partials+0x130/0x170 mm/slub.c:3876
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4d/0x120 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:352
kasan_slab_alloc include/linux/kasan.h:252 [inline]
slab_post_alloc_hook mm/slub.c:4978 [inline]
slab_alloc_node mm/slub.c:5288 [inline]
__do_kmalloc_node mm/slub.c:5649 [inline]
__kmalloc_noprof+0x2e8/0x880 mm/slub.c:5662
kmalloc_noprof include/linux/slab.h:961 [inline]
kzalloc_noprof include/linux/slab.h:1094 [inline]
tomoyo_encode2+0x100/0x3e0 security/tomoyo/realpath.c:45
tomoyo_encode+0x29/0x50 security/tomoyo/realpath.c:80
tomoyo_realpath_from_path+0x18f/0x6e0 security/tomoyo/realpath.c:283
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x274/0x460 security/tomoyo/file.c:822
security_inode_getattr+0x116/0x290 security/security.c:2416
vfs_getattr fs/stat.c:259 [inline]
vfs_statx_path fs/stat.c:299 [inline]
vfs_statx+0x121/0x3f0 fs/stat.c:356
vfs_fstatat+0x7b/0xf0 fs/stat.c:375
__do_sys_newfstatat+0x97/0x120 fs/stat.c:542
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7803d11b0a
RSP: 002b:00007ffe50585d28 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 000055f2b501d408 RCX: 00007f7803d11b0a
RDX: 00007ffe50585d30 RSI: 000055f2b500bef3 RDI: 00000000ffffff9c
RBP: 000055f2e9cda668 R08: 00063489548db180 R09: 00007f780440c000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffe50585d30 R14: 0000000000000000 R15: 00063489548db180
rcu: rcu_preempt kthread starved for 5814 jiffies! g260997 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:28440 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5325 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6929
__schedule_loop kernel/sched/core.c:7011 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:7026
schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1ea/0xaf0 kernel/rcu/tree.c:2083
rcu_gp_kthread+0x26d/0x380 kernel/rcu/tree.c:2285
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x675/0x7d0 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:
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:82
Code: c7 6c 02 c3 cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 83 75 29 00 fb f4 3c 0a 03 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
RSP: 0018:ffffffff8e007df8 EFLAGS: 000002c6
RAX: 000000000188d035 RBX: 0000000000000000 RCX: ffffffff8b60b2a9
RDX: 0000000000000000 RSI: ffffffff8da2bfc9 RDI: ffffffff8bf070c0
RBP: fffffbfff1c12f40 R08: 0000000000000001 R09: ffffed1017086655
R10: ffff8880b84332ab R11: 0000000000000001 R12: 0000000000000000
R13: ffffffff8e097a00 R14: ffffffff908212d0 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff888124a05000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555583105c8 CR3: 000000003e517000 CR4: 00000000003526f0
Call Trace:
arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
default_idle+0x13/0x20 arch/x86/kernel/process.c:767
default_idle_call+0x6c/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:190 [inline]
do_idle+0x38d/0x500 kernel/sched/idle.c:330
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:428
rest_init+0x16b/0x2b0 init/main.c:757
start_kernel+0x3f6/0x4e0 init/main.c:1111
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x130/0x190 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x148
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:15:23:0c:60:d6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:15:23:0c:60:d6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:15:23:0c:60:d6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:15:23:0c:60:d6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:15:23:0c:60:d6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:15:23:0c:60:d6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:15:23:0c:60:d6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:15:23:0c:60:d6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:15:23:0c:60:d6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:15:23:0c:60:d6, vlan:0)