bridge0: received packet on veth0_to_bridge with own address as source address (addr:fa:e2:93:2c:3a:63, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P6609/1:b..l rcu: (detected by 1, t=10503 jiffies, g=197821, q=877 ncpus=2) task:syz-executor state:R running task stack:22472 pid:6609 tgid:6609 ppid:6597 task_flags:0x400140 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5295 [inline] __schedule+0x15dd/0x52d0 kernel/sched/core.c:6908 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7235 irqentry_exit+0x599/0x620 kernel/entry/common.c:239 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:lock_acquire+0x20b/0x2e0 kernel/locking/lockdep.c:5872 Code: e9 30 ff ff ff e8 65 4d 0c 0a f7 c3 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 e1 6a 7a 11 48 3b 44 24 30 75 33 fb 48 83 c4 38 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 46 33 0f 0a cc 48 8d 3d 6e 65 73 RSP: 0018:ffffc9000647f3d8 EFLAGS: 00000286 RAX: 649cf6ad5fcc7d00 RBX: 0000000000000246 RCX: 0000000000000046 RDX: 00000000c2e887e8 RSI: ffffffff8e1649ee RDI: ffffffff8c27b280 RBP: 0000000000000000 R08: ffffffff81767a45 R09: ffffffff8e7602e0 R10: ffffc9000647f538 R11: ffffffff81b0bb70 R12: 0000000000000002 R13: ffffffff8e7602e0 R14: 0000000000000000 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:312 [inline] rcu_read_lock include/linux/rcupdate.h:850 [inline] class_rcu_constructor include/linux/rcupdate.h:1193 [inline] unwind_next_frame+0xc2/0x23c0 arch/x86/kernel/unwind_orc.c:495 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:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __slab_free+0x263/0x2b0 mm/slub.c:5551 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x100 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:5238 [inline] __kmalloc_noprof+0x35c/0x760 mm/slub.c:5250 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_path_perm+0x283/0x560 security/tomoyo/file.c:827 tomoyo_path_unlink+0xaa/0xf0 security/tomoyo/tomoyo.c:162 security_path_unlink+0x15f/0x330 security/security.c:1457 filename_unlinkat+0x349/0x610 fs/namei.c:5537 __do_sys_unlink fs/namei.c:5575 [inline] __se_sys_unlink+0x2e/0x140 fs/namei.c:5572 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3b4fd9b887 RSP: 002b:00007ffdf2bbc678 EFLAGS: 00000206 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3b4fd9b887 RDX: 00007ffdf2bbc6a0 RSI: 00007ffdf2bbc730 RDI: 00007ffdf2bbc730 RBP: 00007ffdf2bbc730 R08: 00007ffdf2bbd730 R09: 00000000ffffffff R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffdf2bbd7c0 R13: 00007f3b4fe32050 R14: 0000000000101bfd R15: 00007ffdf2bbd800 bridge0: received packet on veth0_to_bridge with own address as source address (addr:fa:e2:93:2c:3a:63, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fa:e2:93:2c:3a:63, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fa:e2:93:2c:3a:63, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fa:e2:93:2c:3a:63, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fa:e2:93:2c:3a:63, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fa:e2:93:2c:3a:63, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fa:e2:93:2c:3a:63, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fa:e2:93:2c:3a:63, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fa:e2:93:2c:3a:63, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:fa:e2:93:2c:3a:63, vlan:0)