bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P32461/1:b..l P5843/1:b..l rcu: (detected by 0, t=10502 jiffies, g=137229, q=350 ncpus=1) task:syz-executor state:R running task stack:25512 pid:5843 tgid:5843 ppid:5835 task_flags:0x40050c flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5401 [inline] __schedule+0x116a/0x5de0 kernel/sched/core.c:6790 preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6970 preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline] _raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186 spin_unlock include/linux/spinlock.h:391 [inline] zap_pte_range mm/memory.c:1765 [inline] zap_pmd_range mm/memory.c:1827 [inline] zap_pud_range mm/memory.c:1856 [inline] zap_p4d_range mm/memory.c:1877 [inline] unmap_page_range+0x106b/0x4350 mm/memory.c:1898 unmap_single_vma.constprop.0+0x153/0x240 mm/memory.c:1941 unmap_vmas+0x218/0x470 mm/memory.c:1985 exit_mmap+0x1b9/0xb90 mm/mmap.c:1284 __mmput+0x12a/0x410 kernel/fork.c:1121 mmput+0x62/0x70 kernel/fork.c:1144 exit_mm kernel/exit.c:581 [inline] do_exit+0x7c4/0x2bd0 kernel/exit.c:952 do_group_exit+0xd3/0x2a0 kernel/exit.c:1105 get_signal+0x2673/0x26d0 kernel/signal.c:3034 arch_do_signal_or_restart+0x8f/0x790 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop+0x84/0x110 kernel/entry/common.c:111 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline] do_syscall_64+0x3f6/0x490 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3201184b53 RSP: 002b:00007fff8b92f028 EFLAGS: 00000202 ORIG_RAX: 000000000000003d RAX: fffffffffffffe00 RBX: 00000000000016d9 RCX: 00007f3201184b53 RDX: 0000000040000000 RSI: 00007fff8b92f03c RDI: 00000000ffffffff RBP: 00007fff8b92f03c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008 R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000 task:syz.2.9547 state:R running task stack:27848 pid:32461 tgid:32461 ppid:5844 task_flags:0x400040 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5401 [inline] __schedule+0x116a/0x5de0 kernel/sched/core.c:6790 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7113 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:orc_ip arch/x86/kernel/unwind_orc.c:80 [inline] RIP: 0010:__orc_find+0x70/0xf0 arch/x86/kernel/unwind_orc.c:102 Code: ec 72 4e 4c 89 e2 48 29 ea 48 89 d6 48 c1 ea 3f 48 c1 fe 02 48 01 f2 48 d1 fa 48 8d 5c 95 00 48 89 da 48 c1 ea 03 0f b6 34 0a <48> 89 da 83 e2 07 83 c2 03 40 38 f2 7c 05 40 84 f6 75 4b 48 63 13 RSP: 0018:ffffc9000b7371c8 EFLAGS: 00000a02 RAX: ffffffff91f2ee84 RBX: ffffffff9132eeb0 RCX: dffffc0000000000 RDX: 1ffffffff2265dd6 RSI: 0000000000000000 RDI: ffffffff9132eeb0 RBP: ffffffff9132eeb0 R08: ffffffff91f2ee8a R09: 0000000000000000 R10: 0000000000000000 R11: 00000000000a7e92 R12: ffffffff9132eeb0 R13: ffffffff8b7e925f R14: ffffffff9132eeb0 R15: ffffffff9132eeb0 orc_find arch/x86/kernel/unwind_orc.c:227 [inline] unwind_next_frame+0x2ec/0x20a0 arch/x86/kernel/unwind_orc.c:494 arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4148 [inline] slab_alloc_node mm/slub.c:4197 [inline] kmem_cache_alloc_noprof+0x1cb/0x3b0 mm/slub.c:4204 mt_alloc_one lib/maple_tree.c:176 [inline] mas_alloc_nodes+0x18b/0x8b0 lib/maple_tree.c:1249 mas_node_count_gfp+0x105/0x130 lib/maple_tree.c:1331 mas_preallocate+0x7e0/0xde0 lib/maple_tree.c:5533 vma_iter_prealloc mm/vma.h:463 [inline] __mmap_new_vma mm/vma.c:2461 [inline] __mmap_region+0x1104/0x25e0 mm/vma.c:2622 mmap_region+0x1ab/0x3f0 mm/vma.c:2692 do_mmap+0xa3e/0x1210 mm/mmap.c:561 vm_mmap_pgoff+0x281/0x450 mm/util.c:579 ksys_mmap_pgoff+0x7d/0x5c0 mm/mmap.c:607 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline] __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f45a498e963 RSP: 002b:00007ffee09fee48 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f45a2ff76c0 RCX: 00007f45a498e963 RDX: 0000000000000000 RSI: 0000000000021000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000 R10: 0000000000020022 R11: 0000000000000246 R12: 00007ffee09fefa0 R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000 net_ratelimit: 8757 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) net_ratelimit: 10169 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:7a:5b:9a:45:50:a6, vlan:0)