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): P8778/1:b..l rcu: (detected by 1, t=10502 jiffies, g=25533, q=321 ncpus=2) task:syz.1.1006 state:R running task stack:28216 pid:8778 tgid:8778 ppid:5824 task_flags:0x400040 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5396 [inline] __schedule+0x116a/0x5de0 kernel/sched/core.c:6785 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7108 irqentry_exit+0x36/0x90 kernel/entry/common.c:307 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x17/0x70 kernel/kcov.c:217 Code: 03 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 34 24 65 48 8b 15 58 a3 10 12 65 8b 05 69 a3 10 12 00 01 ff 00 74 1d f6 c4 01 74 43 a9 00 00 0f 00 75 3c a9 00 00 RSP: 0018:ffffc90003c4f490 EFLAGS: 00000202 RAX: 0000000080000000 RBX: 0000000000000001 RCX: ffffffff822e7916 RDX: ffff888027f40000 RSI: ffffffff822e7948 RDI: 0000000000000005 RBP: ffffea000149c3c0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffffea000149c3c0 R13: 000000362d85117d R14: 0000000000000000 R15: 0000000000000000 rcu_read_lock include/linux/rcupdate.h:842 [inline] page_ext_get+0x78/0x1a0 mm/page_ext.c:538 __reset_page_owner+0x2b/0x1a0 mm/page_owner.c:294 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1248 [inline] __free_frozen_pages+0x7fe/0x1180 mm/page_alloc.c:2706 discard_slab mm/slub.c:2717 [inline] __put_partials+0x16d/0x1c0 mm/slub.c:3186 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x4d/0x120 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4148 [inline] kmem_cache_alloc_bulk_noprof+0x41a/0xbc0 mm/slub.c:5374 mt_alloc_bulk lib/maple_tree.c:181 [inline] mas_alloc_nodes+0x2f1/0x8b0 lib/maple_tree.c:1271 mas_node_count_gfp+0x105/0x130 lib/maple_tree.c:1331 mas_preallocate+0x77b/0xda0 lib/maple_tree.c:5532 vma_iter_prealloc mm/vma.h:416 [inline] __split_vma+0x34a/0x1070 mm/vma.c:525 split_vma mm/vma.c:595 [inline] vma_modify+0x15d5/0x20a0 mm/vma.c:1632 vma_modify_flags+0x212/0x2d0 mm/vma.c:1658 mprotect_fixup+0x2b3/0xb10 mm/mprotect.c:658 do_mprotect_pkey+0x9ca/0xd50 mm/mprotect.c:832 __do_sys_mprotect mm/mprotect.c:853 [inline] __se_sys_mprotect mm/mprotect.c:850 [inline] __x64_sys_mprotect+0x78/0xc0 mm/mprotect.c:850 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4a7d18e9e7 RSP: 002b:00007ffffe193588 EFLAGS: 00000206 ORIG_RAX: 000000000000000a RAX: ffffffffffffffda RBX: 00007f4a7e0946c0 RCX: 00007f4a7d18e9e7 RDX: 0000000000000003 RSI: 0000000000020000 RDI: 00007f4a7e075000 RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000 R10: 0000000000021000 R11: 0000000000000206 R12: 00007ffffe1936e0 R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000 bridge0: received packet on veth0_to_bridge with own address as source address (addr:9e:7a:bb:d3:1c:da, 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 veth0_to_bridge with own address as source address (addr:9e:7a:bb:d3:1c:da, 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 veth0_to_bridge with own address as source address (addr:9e:7a:bb:d3:1c:da, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:9e:7a:bb:d3:1c:da, 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 veth0_to_bridge with own address as source address (addr:9e:7a:bb:d3:1c:da, 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 veth0_to_bridge with own address as source address (addr:9e:7a:bb:d3:1c:da, vlan:0)