bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:e0:b0:7d:02:5f, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P7709/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=244309, q=2064 ncpus=2)
task:dhcpcd state:R running task stack:26664 pid:7709 tgid:7709 ppid:5293 task_flags:0x400040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1840/0x57a0 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/0x8e0 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:121 [inline]
RIP: 0010:lock_acquire+0x98/0x350 kernel/locking/lockdep.c:5844
Code: 0f 84 d3 00 00 00 48 8b b4 24 90 00 00 00 4c 89 ef e8 8c 10 8f 00 83 3d f5 78 8e 0e 00 0f 84 ce 00 00 00 65 8b 05 b8 72 95 11 <85> c0 0f 85 bf 00 00 00 65 48 8b 05 00 2d 95 11 83 b8 8c 0b 00 00
RSP: 0018:ffffc90005d0fa58 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff823a3c6b RDI: 1ffffffff1d2b8f0
RBP: ffffffff823a3c4e R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000000d R11: ffffffff8e95c780 R12: 0000000000000002
R13: ffffffff8e95c780 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
__update_page_owner_free_handle+0x4b/0x470 mm/page_owner.c:283
__reset_page_owner+0x85/0x1f0 mm/page_owner.c:321
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0xc0d/0xd20 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_lru_noprof+0x2b4/0x640 mm/slub.c:4918
sock_alloc_inode+0x2c/0x190 net/socket.c:328
alloc_inode+0x6a/0x1b0 fs/inode.c:345
new_inode_pseudo include/linux/fs.h:3015 [inline]
sock_alloc net/socket.c:697 [inline]
__sock_create+0x12d/0x9d0 net/socket.c:1629
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: 0033:0x7f2a05740707
RSP: 002b:00007fffba26b588 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 000055fe707e9e00 RCX: 00007f2a05740707
RDX: 0000000000000300 RSI: 0000000000080803 RDI: 0000000000000011
RBP: 000055fe366224b0 R08: 00007f2a0580fac0 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000202 R12: 0000000000000000
R13: 000055fe707de060 R14: 0000000000000000 R15: 000055fe36637ac0
rcu: rcu_preempt kthread starved for 733 jiffies! g244309 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:27688 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1840/0x57a0 kernel/sched/core.c:7189
__schedule_loop kernel/sched/core.c:7268 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7283
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 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: 101 PID: 5292 Comm: dhcpcd Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:arch_try_cmpxchg128 arch/x86/include/asm/cmpxchg_64.h:83 [inline]
RIP: 0010:__update_freelist_fast mm/slub.c:641 [inline]
RIP: 0010:slab_update_freelist mm/slub.c:707 [inline]
RIP: 0010:__slab_free+0xbd/0x2c0 mm/slub.c:5564
Code: 44 24 04 74 45 85 c0 74 41 45 31 e4 41 f6 46 0a 20 74 66 48 8b 44 24 40 48 8b 54 24 48 48 89 de 48 8b 5c 24 30 48 8b 4c 24 38 48 0f c7 4e 20 48 89 f3 0f 84 e8 00 00 00 48 89 44 24 40 48 89
RSP: 0018:ffffc9000353f9d0 EFLAGS: 00000202
RAX: ffff888058406500 RBX: ffff8880584063c0 RCX: 00000008000c0003
RDX: 00000008000c0004 RSI: ffffea0001610180 RDI: ffff8881404fa640
RBP: ffffc9000353fa58 R08: 0000000000000000 R09: ffffffff82308fce
R10: dffffc0000000000 R11: fffffbfff205f11f R12: 0000000000000000
R13: ffff888058406500 R14: ffff8881404fa640 R15: 0000000000000000
FS: 00007f2a0563b780(0000) GS:ffff8881252b9000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3df9872780 CR3: 000000007cc8e000 CR4: 00000000003526f0
Call Trace:
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]
__do_kmalloc_node mm/slub.c:5295 [inline]
__kmalloc_noprof+0x312/0x750 mm/slub.c:5308
kmalloc_noprof include/linux/slab.h:954 [inline]
tomoyo_realpath_from_path+0xef/0x640 security/tomoyo/realpath.c:251
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_number_perm+0x246/0x5f0 security/tomoyo/file.c:728
security_file_ioctl+0xc3/0x2a0 security/security.c:2512
__do_sys_ioctl fs/ioctl.c:591 [inline]
__se_sys_ioctl+0x47/0x170 fs/ioctl.c:583
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: 0033:0x7f2a0573b378
Code: 00 00 48 8d 44 24 08 48 89 54 24 e0 48 89 44 24 c0 48 8d 44 24 d0 48 89 44 24 c8 b8 10 00 00 00 c7 44 24 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 07 89 d0 c3 0f 1f 40 00 48 8b 15 49 3a 0d
RSP: 002b:00007fffba28b6e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000055fe707c81b0 RCX: 00007f2a0573b378
RDX: 00007fffba28b6f0 RSI: 0000000000008921 RDI: 000000000000000f
RBP: 00007fffba28b6f0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000055fe707cefa0
R13: 000055fe707c81b0 R14: 000055fe707cefa0 R15: 00007fffba28b940
net_ratelimit: 12651 callbacks suppressed
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:82:e0:b0:7d:02:5f, vlan:0)
bridge0: received packet on bridge_slave_1 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:82:e0:b0:7d:02:5f, 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 bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, 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 bridge_slave_1 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:5e:95:ab:d9:65:ad, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
net_ratelimit: 18614 callbacks suppressed
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:82:e0:b0:7d:02:5f, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, 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:aa:aa:aa:aa:aa:0c, 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 bridge_slave_1 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:82:e0:b0:7d:02:5f, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)