bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:1b:d1:51:43:fa, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P11914/1:b..l P11902/1:b..l rcu: (detected by 0, t=10503 jiffies, g=67657, q=1331 ncpus=2) task:syz.4.1515 state:R running task stack:26848 pid:11902 tgid:11901 ppid:5840 task_flags:0x40044c flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5298 [inline] __schedule+0x15dd/0x52d0 kernel/sched/core.c:6911 preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:7095 preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12 __raw_spin_unlock include/linux/spinlock_api_smp.h:169 [inline] _raw_spin_unlock+0x3f/0x50 kernel/locking/spinlock.c:186 spin_unlock include/linux/spinlock.h:389 [inline] zap_pte_range mm/memory.c:1959 [inline] zap_pmd_range mm/memory.c:2021 [inline] zap_pud_range mm/memory.c:2049 [inline] zap_p4d_range mm/memory.c:2070 [inline] unmap_page_range+0x3b71/0x48f0 mm/memory.c:2091 unmap_single_vma mm/memory.c:2133 [inline] unmap_vmas+0x48f/0x6a0 mm/memory.c:2171 exit_mmap+0x280/0xa10 mm/mmap.c:1302 __mmput+0x118/0x430 kernel/fork.c:1175 exit_mm+0x168/0x220 kernel/exit.c:581 do_exit+0x6a2/0x23c0 kernel/exit.c:964 do_group_exit+0x21b/0x2d0 kernel/exit.c:1118 get_signal+0x1284/0x1330 kernel/signal.c:3034 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline] exit_to_user_mode_loop+0x86/0x480 kernel/entry/common.c:98 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline] do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f844779c4ab RSP: 002b:00007f84486a4f00 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 00007f844779c4ab RDX: 00007f84486a5fd0 RSI: 0000000080085502 RDI: 0000000000000003 RBP: 00007f84486a5fd0 R08: 0000000000000012 R09: 00007f84486a4fc8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000080085502 R13: 0000000800000000 R14: 0000000000000012 R15: 00007f8447850ede task:syz.1.1518 state:R running task stack:24960 pid:11914 tgid:11914 ppid:5838 task_flags:0x400040 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5298 [inline] __schedule+0x15dd/0x52d0 kernel/sched/core.c:6911 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7238 irqentry_exit+0x599/0x620 kernel/entry/common.c:239 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210 Code: 89 fb e8 23 00 00 00 48 8b 3d 04 8b 55 0c 48 89 de 5b e9 b3 9b 5e 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 04 24 65 48 8b 0d 28 db 56 11 65 8b 15 49 db 56 RSP: 0018:ffffc900047bf6e0 EFLAGS: 00000203 RAX: 1ffff11047ffc600 RBX: ffffffff823c3022 RCX: ffff888029f9db80 RDX: 0000000000000000 RSI: 0000000000001000 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff823c3022 R09: ffffffff8e75e5e0 R10: dffffc0000000000 R11: fffff94000224ec7 R12: 0000000000000008 R13: dffffc0000000000 R14: 00000000000449d8 R15: ffff88813feef000 __nr_to_section include/linux/mmzone.h:1979 [inline] __pfn_to_section include/linux/mmzone.h:2114 [inline] lookup_page_ext mm/page_ext.c:255 [inline] page_ext_get+0x172/0x2e0 mm/page_ext.c:532 __reset_page_owner+0x28/0x1f0 mm/page_owner.c:306 reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __slab_free+0x263/0x2b0 mm/slub.c:5573 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x100 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_kmalloc+0x22/0xb0 mm/kasan/common.c:406 kasan_kmalloc include/linux/kasan.h:263 [inline] __do_kmalloc_node mm/slub.c:5260 [inline] __kmalloc_noprof+0x35c/0x760 mm/slub.c:5272 kmalloc_noprof include/linux/slab.h:954 [inline] kzalloc_noprof include/linux/slab.h:1188 [inline] lsm_blob_alloc security/security.c:193 [inline] lsm_task_alloc security/security.c:245 [inline] security_task_alloc+0x4d/0x330 security/security.c:2683 copy_process+0x16df/0x3cd0 kernel/fork.c:2205 kernel_clone+0x248/0x8e0 kernel/fork.c:2653 __do_sys_clone3 kernel/fork.c:2955 [inline] __se_sys_clone3+0x33c/0x360 kernel/fork.c:2934 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc9c39d609 RSP: 002b:00007fdc9c73f908 EFLAGS: 00000206 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007fdc9c358ba0 RCX: 00007fdc9c39d609 RDX: 00007fdc9c358ba0 RSI: 0000000000000058 RDI: 00007fdc9c73f960 RBP: 00007fdc9a5f66c0 R08: 00007fdc9a5f66c0 R09: 00007fdc9c73fa47 R10: 0000000000000008 R11: 0000000000000206 R12: ffffffffffffffe8 R13: 000000000000006e R14: 00007fdc9c73f960 R15: 00007fdc9c73fa48 net_ratelimit: 15518 callbacks suppressed batman_adv: batadv0: adding TT local entry aa:aa:aa:aa:aa:3e to non-existent VLAN 1280 bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:1b:d1:51:43:fa, vlan:0) batman_adv: batadv0: adding TT local entry aa:aa:aa:aa:aa:3e to non-existent VLAN 1280 batman_adv: batadv0: adding TT local entry aa:aa:aa:aa:aa:3e to non-existent VLAN 1280 bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:1b:d1:51:43:fa, vlan:0) net_ratelimit: 13732 callbacks suppressed batman_adv: batadv0: adding TT local entry aa:aa:aa:aa:aa:3e to non-existent VLAN 1280 bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:1b:d1:51:43:fa, vlan:0) batman_adv: batadv0: adding TT local entry aa:aa:aa:aa:aa:3e to non-existent VLAN 1280 batman_adv: batadv0: adding TT local entry aa:aa:aa:aa:aa:3e to non-existent VLAN 1280 bridge0: received packet on veth0_to_bridge with own address as source address (addr:e6:1b:d1:51:43:fa, vlan:0)