bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P11013/1:b..l rcu: (detected by 1, t=10503 jiffies, g=43525, q=7107 ncpus=2) task:syz.0.1527 state:R running task stack:24328 pid:11013 tgid:11012 ppid:5862 task_flags:0x20400140 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5357 [inline] __schedule+0x1798/0x4cc0 kernel/sched/core.c:6961 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7288 irqentry_exit+0x6f/0x90 kernel/entry/common.c:197 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:unwind_next_frame+0x19b7/0x2390 arch/x86/kernel/unwind_orc.c:680 Code: 00 48 c7 c2 00 42 a8 8b e8 96 b3 2a 00 48 c7 c7 e0 bf 53 8e 4c 89 fe e8 77 99 2a 00 e8 02 45 34 00 89 d8 48 81 c4 98 00 00 00 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 4c 8b 7c 24 48 eb RSP: 0018:ffffc90003fa6610 EFLAGS: 00000292 RAX: 0000000090831a01 RBX: ffffffff90831a01 RCX: 0f66cfa277141600 RDX: ffffc90003fa6601 RSI: ffffffff8c04e5e0 RDI: ffff88802d8f9e00 RBP: dffffc0000000000 R08: ffffc90003fa69a8 R09: 0000000000000000 R10: ffffc90003fa6698 R11: fffff520007f4cd5 R12: ffffc90003fa69b8 R13: ffffc90003fa0000 R14: ffffc90003fa6648 R15: ffffffff8173e1d5 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:56 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:77 poison_kmalloc_redzone mm/kasan/common.c:397 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:414 kasan_kmalloc include/linux/kasan.h:260 [inline] __kmalloc_cache_noprof+0x21c/0x3a0 mm/slub.c:4396 kmalloc_noprof include/linux/slab.h:909 [inline] slab_free_hook mm/slub.c:2369 [inline] slab_free mm/slub.c:4680 [inline] kmem_cache_free+0x166/0x400 mm/slub.c:4782 blk_update_request+0x57e/0xe60 block/blk-mq.c:989 blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1151 >::end_ok rust/kernel/block/mq/request.rs:129 [inline] ::queue_rq drivers/block/rnull.rs:69 [inline] >::queue_rq_callback+0x1b6/0x2a0 rust/kernel/block/mq/operations.rs:94 blk_mq_dispatch_rq_list+0x4bd/0x1900 block/blk-mq.c:2120 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:168 [inline] blk_mq_do_dispatch_sched block/blk-mq-sched.c:182 [inline] __blk_mq_sched_dispatch_requests+0xda4/0x1570 block/blk-mq-sched.c:307 blk_mq_sched_dispatch_requests+0xd7/0x190 block/blk-mq-sched.c:329 blk_mq_run_hw_queue+0x404/0x4f0 block/blk-mq.c:2358 blk_mq_dispatch_list+0xd0c/0xe00 include/linux/spinlock.h:-1 blk_mq_flush_plug_list+0x469/0x550 block/blk-mq.c:2967 __blk_flush_plug+0x3d3/0x4b0 block/blk-core.c:1220 blk_finish_plug+0x5e/0x90 block/blk-core.c:1247 blkdev_writepages+0x10e/0x170 block/fops.c:484 do_writepages+0x32e/0x550 mm/page-writeback.c:2634 filemap_fdatawrite_wbc mm/filemap.c:386 [inline] __filemap_fdatawrite_range mm/filemap.c:419 [inline] file_write_and_wait_range+0x23e/0x340 mm/filemap.c:794 blkdev_fsync+0x74/0xd0 block/fops.c:615 generic_write_sync+0x1b3/0x290 include/linux/fs.h:3036 blkdev_write_iter+0x5fa/0x710 block/fops.c:800 iter_file_splice_write+0x975/0x10e0 fs/splice.c:738 do_splice_from fs/splice.c:938 [inline] direct_splice_actor+0x101/0x160 fs/splice.c:1161 splice_direct_to_actor+0x5a5/0xcc0 fs/splice.c:1105 do_splice_direct_actor fs/splice.c:1204 [inline] do_splice_direct+0x181/0x270 fs/splice.c:1230 do_sendfile+0x4da/0x7e0 fs/read_write.c:1370 __do_sys_sendfile64 fs/read_write.c:1431 [inline] __se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1417 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7faffd58ebe9 RSP: 002b:00007faffe496038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007faffd7b5fa0 RCX: 00007faffd58ebe9 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000006 RBP: 00007faffd611e19 R08: 0000000000000000 R09: 0000000000000000 R10: 000000007ffff000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007faffd7b6038 R14: 00007faffd7b5fa0 R15: 00007ffcbff4caa8 bridge0: received packet on veth1_to_bridge with own address as source address (addr:a6:73:a2:35:9a:50, 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:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth1_to_bridge with own address as source address (addr:a6:73:a2:35:9a:50, vlan:0) bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)