bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5960/1:b..l rcu: (detected by 1, t=10503 jiffies, g=15417, q=1725 ncpus=2) task:syz.0.62 state:R running task stack:25448 pid:5960 tgid:5955 ppid:5642 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5388 [inline] __schedule+0x1821/0x5740 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/0x8b0 kernel/entry/common.c:164 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:ptlock_ptr include/linux/mm.h:3697 [inline] RIP: 0010:pte_lockptr include/linux/mm.h:3721 [inline] RIP: 0010:pte_offset_map_rw_nolock+0x112/0x160 mm/pgtable-generic.c:332 Code: a8 ff 4c 21 e5 48 c1 ed 06 4c 8d 3c 2d 28 00 00 00 4d 01 ef 4c 89 f8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df 42 80 3c 20 00 <74> 08 4c 89 ff e8 74 e9 13 00 4d 8b 3f 48 89 d8 48 c1 e8 03 42 80 RSP: 0018:ffffc90005c7f608 EFLAGS: 00000246 RAX: 1ffffd400013006d RBX: ffffc90005c7f7e0 RCX: ffff8880283d0000 RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000980340 R08: ffffffff821d20f9 R09: ffffffff8e95cd20 R10: ffffc90005c7f7ac R11: fffff52000b8fefe R12: dffffc0000000000 R13: ffffea0000000000 R14: ffff88802600d308 R15: ffffea0000980368 handle_pte_fault mm/memory.c:6412 [inline] __handle_mm_fault mm/memory.c:6565 [inline] handle_mm_fault+0x1373/0x3170 mm/memory.c:6734 do_user_addr_fault+0x75b/0x1340 arch/x86/mm/fault.c:1385 handle_page_fault arch/x86/mm/fault.c:1474 [inline] exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1527 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618 RIP: 0010:rep_movs_alternative+0x30/0x90 arch/x86/lib/copy_user_64.S:60 Code: 83 f9 08 73 25 85 c9 74 0f 8a 06 88 07 48 ff c7 48 ff c6 48 ff c9 75 f1 c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 <48> 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 db 83 f9 08 RSP: 0018:ffffc90005c7fa18 EFLAGS: 00050206 RAX: 00007ffffffff001 RBX: 0000000000000038 RCX: 0000000000000038 RDX: 0000000000000001 RSI: 0000200000061000 RDI: ffffc90005c7faa0 RBP: ffffc90005c7fc30 R08: ffffc90005c7fad7 R09: 1ffff92000b8ff5a R10: dffffc0000000000 R11: fffff52000b8ff5b R12: ffffc90005c7fba0 R13: dffffc0000000000 R14: ffffc90005c7faa0 R15: 0000200000061000 copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline] raw_copy_from_user arch/x86/include/asm/uaccess_64.h:141 [inline] _inline_copy_from_user include/linux/uaccess.h:185 [inline] _copy_from_user+0x7a/0xb0 lib/usercopy.c:18 copy_from_user include/linux/uaccess.h:223 [inline] copy_msghdr_from_user net/socket.c:2628 [inline] recvmsg_copy_msghdr net/socket.c:2884 [inline] ___sys_recvmsg+0x175/0x590 net/socket.c:2956 do_recvmmsg+0x334/0x800 net/socket.c:3055 __sys_recvmmsg net/socket.c:3129 [inline] __do_sys_recvmmsg net/socket.c:3152 [inline] __se_sys_recvmmsg net/socket.c:3145 [inline] __x64_sys_recvmmsg+0x198/0x250 net/socket.c:3145 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: 0033:0x7f8d6219ce59 RSP: 002b:00007f8d62fb0028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f8d62416090 RCX: 00007f8d6219ce59 RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000005 RBP: 00007f8d62232d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f8d62416128 R14: 00007f8d62416090 R15: 00007f8d6253fa48 net_ratelimit: 16961 callbacks suppressed bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) net_ratelimit: 20221 callbacks suppressed bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)