bridge: RTM_NEWNEIGH bridge0 without NUD_PERMANENT list_add corruption. next->prev should be prev (ffffe8ffad25b4d0), but was ffffe8ffad25b4e6. (next=ffffe8ffad25b4d0). ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:29! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 2 PID: 10128 Comm: syz-executor.3 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:__list_add_valid_or_report+0xa9/0x100 lib/list_debug.c:29 Code: c7 8f 8b e8 b9 30 e9 fc 90 0f 0b 48 c7 c7 c0 c7 8f 8b e8 aa 30 e9 fc 90 0f 0b 48 89 d9 48 c7 c7 20 c8 8f 8b e8 98 30 e9 fc 90 <0f> 0b 48 89 f1 48 c7 c7 a0 c8 8f 8b 48 89 de e8 83 30 e9 fc 90 0f RSP: 0018:ffffc9000385f8c0 EFLAGS: 00010086 RAX: 0000000000000075 RBX: ffffe8ffad25b4d0 RCX: ffffc90003499000 RDX: 0000000000000000 RSI: ffffffff816fcdb6 RDI: 0000000000000005 RBP: ffff8880286885d0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000001 R11: 0000000000000002 R12: ffffe8ffad25b4d0 R13: ffffe8ffad25b4d0 R14: 0000000000000010 R15: ffff888028688590 FS: 0000000000000000(0000) GS:ffff88802c200000(0063) knlGS:00000000f5e52b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000020000080 CR3: 0000000000d8a000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add_valid include/linux/list.h:88 [inline] __list_add include/linux/list.h:150 [inline] list_add include/linux/list.h:169 [inline] list_move include/linux/list.h:299 [inline] __bpf_lru_node_move+0x21a/0x480 kernel/bpf/bpf_lru_list.c:126 bpf_percpu_lru_pop_free kernel/bpf/bpf_lru_list.c:428 [inline] bpf_lru_pop_free+0x25a/0x17e0 kernel/bpf/bpf_lru_list.c:502 prealloc_lru_pop kernel/bpf/hashtab.c:308 [inline] __htab_lru_percpu_map_update_elem+0x17e/0xbd0 kernel/bpf/hashtab.c:1355 bpf_percpu_hash_update+0x122/0x240 kernel/bpf/hashtab.c:2421 bpf_map_update_value+0x3e1/0x6c0 kernel/bpf/syscall.c:181 generic_map_update_batch+0x454/0x5f0 kernel/bpf/syscall.c:1889 bpf_map_do_batch+0x615/0x6e0 kernel/bpf/syscall.c:5197 __sys_bpf+0x18cb/0x5830 kernel/bpf/syscall.c:5752 __do_sys_bpf kernel/bpf/syscall.c:5795 [inline] __se_sys_bpf kernel/bpf/syscall.c:5793 [inline] __ia32_sys_bpf+0x76/0xe0 kernel/bpf/syscall.c:5793 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7260579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f5e525ac EFLAGS: 00000292 ORIG_RAX: 0000000000000165 RAX: ffffffffffffffda RBX: 000000000000001a RCX: 0000000020000080 RDX: 0000000000000038 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_add_valid_or_report+0xa9/0x100 lib/list_debug.c:29 Code: c7 8f 8b e8 b9 30 e9 fc 90 0f 0b 48 c7 c7 c0 c7 8f 8b e8 aa 30 e9 fc 90 0f 0b 48 89 d9 48 c7 c7 20 c8 8f 8b e8 98 30 e9 fc 90 <0f> 0b 48 89 f1 48 c7 c7 a0 c8 8f 8b 48 89 de e8 83 30 e9 fc 90 0f RSP: 0018:ffffc9000385f8c0 EFLAGS: 00010086 RAX: 0000000000000075 RBX: ffffe8ffad25b4d0 RCX: ffffc90003499000 RDX: 0000000000000000 RSI: ffffffff816fcdb6 RDI: 0000000000000005 RBP: ffff8880286885d0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000001 R11: 0000000000000002 R12: ffffe8ffad25b4d0 R13: ffffe8ffad25b4d0 R14: 0000000000000010 R15: ffff888028688590 FS: 0000000000000000(0000) GS:ffff88802c200000(0063) knlGS:00000000f5e52b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000020000080 CR3: 0000000000d8a000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi