IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready overlayfs: upper fs does not support tmpfile. overlayfs: upper fs does not support xattr, falling back to index=off. list_add double add: new=ffff8800741066f0, prev=ffff88008e955078, next=ffff8800741066f0. ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:31! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 7706 Comm: syz-executor.4 Not tainted 4.18.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_add_valid+0xaa/0xb0 lib/list_debug.c:29 Code: e8 eb a9 48 89 f7 48 89 75 e8 e8 81 e0 65 fe 48 8b 75 e8 eb bb 48 89 f2 48 89 d9 4c 89 e6 48 c7 c7 c0 fd 45 87 e8 85 4f 24 fe <0f> 0b 0f 1f 40 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 55 RSP: 0018:ffff880090baf4e0 EFLAGS: 00010282 RAX: 0000000000000058 RBX: ffff8800741066f0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8745fb80 RDI: ffffffff89f18be0 RBP: ffff880090baf4f8 R08: ffffed0015da4f99 R09: ffffed0015da4f98 R10: ffffed0015da4f98 R11: ffff8800aed27cc7 R12: ffff8800741066f0 R13: ffff880074106568 R14: ffff8800741066f0 R15: ffff8800741066f0 FS: 00007fab62b76700(0000) GS:ffff8800aed00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff9b717b20 CR3: 000000008f434000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add include/linux/list.h:60 [inline] list_add include/linux/list.h:79 [inline] inode_sb_list_add+0xa4/0x200 fs/inode.c:444 inode_insert5+0x233/0x3d0 fs/inode.c:1088 ovl_iget5 fs/overlayfs/inode.c:755 [inline] ovl_get_inode+0x22a/0xd57 fs/overlayfs/inode.c:788 ovl_instantiate+0x10b/0x250 fs/overlayfs/dir.c:260 ovl_create_upper fs/overlayfs/dir.c:318 [inline] ovl_create_or_link+0x4d9/0xe70 fs/overlayfs/dir.c:575 ovl_create_object+0x188/0x230 fs/overlayfs/dir.c:607 ovl_create+0x1e/0x20 fs/overlayfs/dir.c:621 lookup_open+0x113d/0x1c80 fs/namei.c:3220 do_last fs/namei.c:3311 [inline] path_openat+0xdac/0x3720 fs/namei.c:3540 do_filp_open+0x177/0x250 fs/namei.c:3574 do_sys_open+0x1dd/0x360 fs/open.c:1101 __do_sys_openat fs/open.c:1128 [inline] __se_sys_openat fs/open.c:1122 [inline] __x64_sys_openat+0x98/0xf0 fs/open.c:1122 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c849 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fab62b75c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fab62b766d4 RCX: 000000000045c849 RDX: 000000000000275a RSI: 0000000020000100 RDI: ffffffffffffff9c RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000078c R14: 00000000004ca3ee R15: 000000000076bf0c Modules linked in: ---[ end trace 60145228b5809573 ]--- RIP: 0010:__list_add_valid+0xaa/0xb0 lib/list_debug.c:29 Code: e8 eb a9 48 89 f7 48 89 75 e8 e8 81 e0 65 fe 48 8b 75 e8 eb bb 48 89 f2 48 89 d9 4c 89 e6 48 c7 c7 c0 fd 45 87 e8 85 4f 24 fe <0f> 0b 0f 1f 40 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 55 RSP: 0018:ffff880090baf4e0 EFLAGS: 00010282 RAX: 0000000000000058 RBX: ffff8800741066f0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8745fb80 RDI: ffffffff89f18be0 RBP: ffff880090baf4f8 R08: ffffed0015da4f99 R09: ffffed0015da4f98 R10: ffffed0015da4f98 R11: ffff8800aed27cc7 R12: ffff8800741066f0 R13: ffff880074106568 R14: ffff8800741066f0 R15: ffff8800741066f0 FS: 00007fab62b76700(0000) GS:ffff8800aed00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff9b717b20 CR3: 000000008f434000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400