bridge0: received packet on veth1_to_bridge with own address as source address (addr:f6:51:4a:14:07:4c, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P21117/1:b..l.. P21118/1:b..l.. rcu: (detected by 1, t=10507 jiffies, g=104721, q=2153 ncpus=2) task:syz.2.3782 state:R running task stack:25576 pid:21118 tgid:21118 ppid:19553 task_flags:0x40044c flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5583 [inline] __schedule+0x17dd/0x5830 kernel/sched/core.c:7382 preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7662 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:543 [inline] irqentry_exit+0x14f/0x9b0 kernel/entry/common.c:154 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:__reset_page_owner+0x61/0x2a0 mm/page_owner.c:330 Code: 00 00 fc ff df 48 8b 0d ad 0d c3 0d 48 8d 1c 08 48 83 c3 08 48 89 d9 48 c1 e9 03 42 0f b6 0c 29 84 c9 0f 85 a0 01 00 00 8b 1b <48> 89 c7 e8 97 bd 01 00 bf 00 20 00 00 e8 3d 02 00 00 65 4c 8b 25 RSP: 0018:ffffc9000da4ee90 EFLAGS: 00000246 RAX: ffff88801f815220 RBX: 0000000005d201d5 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff824bdc92 R09: 0000000000000000 R10: dffffc0000000000 R11: fffff940003421d7 R12: ffffea0001a10e80 R13: dffffc0000000000 R14: ffffea0001a10e80 R15: 00000095c88ca353 reset_page_owner include/linux/page_owner.h:26 [inline] __free_pages_prepare mm/page_alloc.c:1403 [inline] free_unref_folios+0xdc6/0x14e0 mm/page_alloc.c:3014 folios_put_refs+0x9e9/0xb30 mm/folio.c:1039 free_pages_and_swap_cache+0x41e/0x490 mm/swap_state.c:657 __tlb_batch_free_encoded_pages mm/mmu_gather.c:138 [inline] tlb_batch_pages_flush mm/mmu_gather.c:151 [inline] tlb_flush_mmu_free mm/mmu_gather.c:397 [inline] tlb_flush_mmu+0x6d3/0xa30 mm/mmu_gather.c:404 zap_pte_range mm/memory.c:2067 [inline] zap_pmd_range mm/memory.c:2114 [inline] zap_pud_range mm/memory.c:2142 [inline] zap_p4d_range mm/memory.c:2163 [inline] __zap_vma_range+0x418d/0x4f70 mm/memory.c:2203 unmap_vmas+0x38b/0x550 mm/memory.c:2272 exit_mmap+0x290/0xa40 mm/mmap.c:1315 __mmput+0x118/0x420 kernel/fork.c:1192 exit_mm+0x18e/0x240 kernel/exit.c:586 do_exit+0x6a8/0x2360 kernel/exit.c:967 do_group_exit+0x22d/0x2f0 kernel/exit.c:1123 get_signal+0x1216/0x12c0 kernel/signal.c:3112 arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline] exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline] do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f23e37a0349 RSP: 002b:00007ffc9e307458 EFLAGS: 00000202 ORIG_RAX: 00000000000001b3 RAX: fffffffffffffffc RBX: 00007f23e375b8e0 RCX: 00007f23e37a0349 RDX: 00007f23e375b8e0 RSI: 0000000000000058 RDI: 00007ffc9e3074b0 RBP: 00007f23e19f66c0 R08: 00007f23e19f66c0 R09: 00007ffc9e307597 R10: 0000000000000008 R11: 0000000000000202 R12: ffffffffffffffe8 R13: 000000000000006e R14: 00007ffc9e3074b0 R15: 00007ffc9e307598 task:syz.4.3783 state:R running task stack:24552 pid:21117 tgid:21117 ppid:18603 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5583 [inline] __schedule+0x17dd/0x5830 kernel/sched/core.c:7382 preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7662 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:543 [inline] irqentry_exit+0x14f/0x9b0 kernel/entry/common.c:154 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:lock_acquire+0x232/0x350 kernel/locking/lockdep.c:5947 Code: ff ff ff e8 20 99 5e 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 22 f3 1b 13 48 3b 44 24 50 75 33 fb 48 83 c4 58 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 3f ac 61 0a cc 48 8d 3d a7 90 fc RSP: 0018:ffffc90009bff268 EFLAGS: 00000282 RAX: 83951308c654bb00 RBX: 0000000000000000 RCX: 0000000000000046 RDX: 00000000f40e1e5c RSI: ffffffff8e92d57d RDI: ffffffff8c8e8c80 RBP: ffff88802f9addc0 R08: ffffffff822b3329 R09: 0000000000000000 R10: dffffc0000000000 R11: fffff940003a1967 R12: ffffffff8ff5a320 R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:309 [inline] rcu_read_lock include/linux/rcupdate.h:849 [inline] __pte_offset_map+0x45/0x240 mm/pgtable-generic.c:302 pte_offset_map_lock+0x46/0x210 mm/pgtable-generic.c:419 get_locked_pte mm/memory.c:2395 [inline] insert_page+0x2a3/0x440 mm/memory.c:2498 kcov_mmap+0xc9/0x140 kernel/kcov.c:545 vfs_mmap include/linux/fs.h:2068 [inline] mmap_file mm/internal.h:256 [inline] __mmap_new_file_vma mm/vma.c:2623 [inline] __mmap_new_vma mm/vma.c:2720 [inline] __mmap_region mm/vma.c:3054 [inline] mmap_region+0x1d5e/0x2840 mm/vma.c:3136 do_mmap+0xe0a/0x1300 mm/mmap.c:573 vm_mmap_pgoff+0x27a/0x520 mm/util.c:581 ksys_mmap_pgoff+0x4dc/0x760 mm/mmap.c:619 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f04b6f9f2c2 RSP: 002b:00007ffd500332b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f04b4df6000 RCX: 00007f04b6f9f2c2 RDX: 0000000000000003 RSI: 0000000000400000 RDI: 00007f04b4df6000 RBP: 0000000000000011 R08: 00000000000000db R09: 0000000000000000 R10: 0000000000000011 R11: 0000000000000206 R12: 0000000000000003 R13: 0000000000000005 R14: 0000000000000000 R15: 00007f04b7225fa0