bridge0: received packet on bridge_slave_0 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): P5891/1:b..l rcu: (detected by 1, t=10502 jiffies, g=7813, q=1649 ncpus=2) task:syz.2.3 state:R running task stack:24304 pid:5891 tgid:5887 ppid:5844 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5377 [inline] __schedule+0x186c/0x4be0 kernel/sched/core.c:6764 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7086 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_release+0x3f/0xa30 kernel/locking/lockdep.c:5859 Code: 48 81 ec 00 01 00 00 49 89 f5 48 89 7c 24 18 65 48 8b 04 25 28 00 00 00 48 89 84 24 e0 00 00 00 49 bf 00 00 00 00 00 fc ff df <48> c7 44 24 60 b3 8a b5 41 48 c7 44 24 68 40 8d 08 8e 48 c7 44 24 RSP: 0018:ffffc90004496f60 EFLAGS: 00000286 RAX: fa632780d1ad6e00 RBX: 0000000000000001 RCX: 0000000000080000 RDX: ffffc9000dae3000 RSI: ffffffff82318de7 RDI: ffffffff8e93a020 RBP: ffffc90004497088 R08: ffffffff82318d76 R09: 1ffff1100390e64f R10: dffffc0000000000 R11: ffffed100390e650 R12: ffffea0000c5c1c8 R13: ffffffff82318de7 R14: 0000000000000000 R15: dffffc0000000000 rcu_lock_release include/linux/rcupdate.h:347 [inline] rcu_read_unlock include/linux/rcupdate.h:880 [inline] page_ext_put+0xa3/0xc0 mm/page_ext.c:550 page_table_check_free include/linux/page_table_check.h:41 [inline] free_pages_prepare mm/page_alloc.c:1128 [inline] free_unref_page+0xd53/0x1010 mm/page_alloc.c:2659 __slab_free+0x2c2/0x380 mm/slub.c:4524 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4119 [inline] slab_alloc_node mm/slub.c:4168 [inline] kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4175 ptlock_alloc+0x20/0x70 mm/memory.c:6974 ptlock_init include/linux/mm.h:2971 [inline] pagetable_pte_ctor include/linux/mm.h:2998 [inline] __pte_alloc_one_noprof include/asm-generic/pgalloc.h:73 [inline] pte_alloc_one+0xd3/0x510 arch/x86/mm/pgtable.c:33 do_fault_around mm/memory.c:5275 [inline] do_read_fault mm/memory.c:5314 [inline] do_fault mm/memory.c:5457 [inline] do_pte_missing mm/memory.c:3980 [inline] handle_pte_fault+0x2913/0x5ed0 mm/memory.c:5820 __handle_mm_fault mm/memory.c:5963 [inline] handle_mm_fault+0x11f5/0x1d50 mm/memory.c:6131 do_user_addr_fault arch/x86/mm/fault.c:1389 [inline] handle_page_fault arch/x86/mm/fault.c:1481 [inline] exc_page_fault+0x2b9/0x8b0 arch/x86/mm/fault.c:1539 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0010:fault_in_readable+0x173/0x2d0 mm/gup.c:2244 Code: 00 fc ff df 4c 89 e8 4f 8d ac 25 ff 0f 00 00 49 81 e5 00 f0 ff ff 49 39 c5 72 7a e8 f7 5e b5 ff 4c 39 eb 74 7d 4c 89 64 24 08 <44> 8a 23 43 0f b6 04 3e 84 c0 75 18 44 88 64 24 40 48 81 c3 00 10 RSP: 0018:ffffc90004497a40 EFLAGS: 00050287 RAX: ffffffff8209f939 RBX: 0000000020245000 RCX: 0000000000080000 RDX: ffffc9000dae3000 RSI: 0000000000035e93 RDI: 0000000000035e94 RBP: ffffc90004497af8 R08: ffffffff8209f8cc R09: ffffffff84e57309 R10: 0000000000000002 R11: ffff88802abe3c00 R12: 0000000000001000 R13: 0000000020246000 R14: 1ffff92000892f50 R15: dffffc0000000000 fault_in_iov_iter_readable+0x229/0x280 lib/iov_iter.c:94 generic_perform_write+0x260/0x990 mm/filemap.c:4122 shmem_file_write_iter+0xf9/0x120 mm/shmem.c:3296 new_sync_write fs/read_write.c:586 [inline] vfs_write+0xacf/0xd10 fs/read_write.c:679 ksys_write+0x18f/0x2b0 fs/read_write.c:731 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5e12f8cd29 RSP: 002b:00007f5e13e10038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f5e131a6080 RCX: 00007f5e12f8cd29 RDX: 000000000208e24b RSI: 0000000020000240 RDI: 000000000000000b RBP: 00007f5e1300e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f5e131a6080 R15: 00007f5e132cfa28 bridge0: received packet on veth0_to_bridge with own address as source address (addr:3e:8b:fd:25:3e:94, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:3e:8b:fd:25:3e:94, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, 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:3e:8b:fd:25:3e:94, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:3e:8b:fd:25:3e:94, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, 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:0c, vlan:0)