bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:91:ae:d4:48:36, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5835/1:b..l P5836/1:b..l rcu: (detected by 0, t=10502 jiffies, g=25673, q=1069 ncpus=2) task:syz-executor state:R running task stack:22408 pid:5836 tgid:5836 ppid:5814 task_flags:0x400140 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5298 [inline] __schedule+0x15dd/0x52d0 kernel/sched/core.c:6911 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7238 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:lookup_page_ext mm/page_ext.c:265 [inline] RIP: 0010:page_ext_lookup+0x114/0x180 mm/page_ext.c:513 Code: ff 89 c6 e8 ae 89 89 ff 85 ed 74 59 e8 65 85 89 ff 48 85 db 40 0f 95 c5 48 89 de 48 83 e6 01 41 0f 94 c6 31 ff e8 2c 8a 89 ff <44> 84 f5 75 09 e8 42 85 89 ff 31 db eb 10 e8 39 85 89 ff 4c 0f af RSP: 0018:ffffc90004077bd0 EFLAGS: 00000293 RAX: ffffffff823c2f84 RBX: ffff88801c280000 RCX: ffff88807a8f0000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff823c392a R09: ffffffff8e75e5e0 R10: dffffc0000000000 R11: ffffed1006869c72 R12: 000000000007c1f8 R13: dffffc0000000000 R14: ffff88813feef101 R15: 0000000000001000 page_ext_iter_begin include/linux/page_ext.h:133 [inline] __page_table_check_zero+0x135/0x3e0 mm/page_table_check.c:139 page_table_check_free include/linux/page_table_check.h:46 [inline] __free_pages_prepare mm/page_alloc.c:1434 [inline] __free_frozen_pages+0xc3b/0xdb0 mm/page_alloc.c:2978 __slab_free+0x263/0x2b0 mm/slub.c:5573 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_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:4538 [inline] slab_alloc_node mm/slub.c:4866 [inline] kmem_cache_alloc_noprof+0x2bc/0x650 mm/slub.c:4873 alloc_filename fs/namei.c:142 [inline] do_getname+0x2e/0x250 fs/namei.c:182 getname_flags fs/namei.c:225 [inline] getname include/linux/fs.h:2512 [inline] class_filename_constructor include/linux/fs.h:2539 [inline] __do_sys_unlink fs/namei.c:5580 [inline] __se_sys_unlink+0x1e/0x140 fs/namei.c:5578 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: 0033:0x7f0c07d9b907 RSP: 002b:00007f0c0813ecb8 EFLAGS: 00000206 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0c07d9b907 RDX: 00007f0c0813ece0 RSI: 00007f0c0813ed70 RDI: 00007f0c0813ed70 RBP: 00007f0c0813ed70 R08: 00007f0c0813fd70 R09: 00000000ffffffff R10: 0000000000000100 R11: 0000000000000206 R12: 00007f0c0813fe00 R13: 00007f0c07e32048 R14: 0000000000034a3b R15: 00007f0c0813fe40 task:syz-executor state:R running task stack:22400 pid:5835 tgid:5835 ppid:1 task_flags:0x40054c flags:0x00080003 Call Trace: context_switch kernel/sched/core.c:5298 [inline] __schedule+0x15dd/0x52d0 kernel/sched/core.c:6911 preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:7095 preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12 __raw_read_unlock include/linux/rwlock_api_smp.h:254 [inline] _raw_read_unlock+0x3f/0x50 kernel/locking/spinlock.c:260 zap_pid_ns_processes+0x2c9/0x5f0 kernel/pid_namespace.c:233 find_child_reaper kernel/exit.c:622 [inline] forget_original_parent kernel/exit.c:706 [inline] exit_notify kernel/exit.c:743 [inline] do_exit+0x1f8f/0x23c0 kernel/exit.c:988 do_group_exit+0x21b/0x2d0 kernel/exit.c:1118 get_signal+0x1284/0x1330 kernel/signal.c:3034 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline] exit_to_user_mode_loop+0x86/0x480 kernel/entry/common.c:98 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline] do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f520395d04e RSP: 002b:00007f5203d3fd48 EFLAGS: 00000246 ORIG_RAX: 000000000000003d RAX: fffffffffffffe00 RBX: 00005555889f3500 RCX: 00007f520395d04e RDX: 0000000040000000 RSI: 00007f5203d3fdec RDI: ffffffffffffffff RBP: 00007f5203d3fdec R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000088 R13: 0000555588a069f0 R14: 0000000000033f06 R15: 00007f5203d3fe40 net_ratelimit: 17949 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:91:ae:d4:48:36, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:91:ae:d4:48:36, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:91:ae:d4:48:36, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:91:ae:d4:48:36, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:91:ae:d4:48:36, vlan:0) net_ratelimit: 22973 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:91:ae:d4:48:36, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:91:ae:d4:48:36, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:91:ae:d4:48:36, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:91:ae:d4:48:36, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:82:91:ae:d4:48:36, vlan:0)