IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready 8021q: adding VLAN 0 to HW filter on device batadv0 list_add double add: new=ffff888099b2bb98, prev=ffff888099b2bb98, next=ffff88808d1d3080. ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:29! invalid opcode: 0000 [#1] PREEMPT SMP KASAN kobject: '9p-237' (ffff8880a93f6350): kobject_add_internal: parent: 'bdi', set: 'devices' Modules linked in: CPU: 0 PID: 7512 Comm: syz-executor.3 Not tainted 4.14.150 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880a84442c0 task.stack: ffff8880985c0000 RIP: 0010:__list_add_valid.cold+0x26/0x3c lib/list_debug.c:29 RSP: 0018:ffff8880985c7a00 EFLAGS: 00010282 kobject: '9p-237' (ffff8880a93f6350): kobject_uevent_env kobject: '9p-237' (ffff8880a93f6350): fill_kobj_path: path = '/devices/virtual/bdi/9p-237' RAX: 0000000000000058 RBX: ffff88808d1d3040 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff866d10e0 RDI: ffffed10130b8f36 RBP: ffff8880985c7a18 R08: 0000000000000058 R09: ffff8880a8444b88 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88808d1d3080 R13: ffff888099b2bb98 R14: ffff888099b2bb98 R15: ffff888099b2bb98 FS: 00007f4c5985c700(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000013f19b8 CR3: 0000000089de5000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add include/linux/list.h:60 [inline] list_add_tail include/linux/list.h:93 [inline] p9_fd_request+0xe3/0x2b0 net/9p/trans_fd.c:679 p9_client_rpc+0x21b/0x1180 net/9p/client.c:774 kobject: 'loop5' (ffff8880a4b58aa0): kobject_uevent_env kobject: 'loop5' (ffff8880a4b58aa0): fill_kobj_path: path = '/devices/virtual/block/loop5' p9_client_clunk+0x89/0x150 net/9p/client.c:1507 v9fs_dentry_release+0x6d/0xd0 fs/9p/vfs_dentry.c:73 __dentry_kill+0x39a/0x580 fs/dcache.c:596 dentry_kill fs/dcache.c:632 [inline] dput.part.0+0x59f/0x750 fs/dcache.c:847 dput fs/dcache.c:811 [inline] do_one_tree+0x44/0x50 fs/dcache.c:1507 shrink_dcache_for_umount+0x67/0x140 fs/dcache.c:1521 kobject: '9p-238' (ffff8880a8b88d90): kobject_add_internal: parent: 'bdi', set: 'devices' generic_shutdown_super+0x6d/0x370 fs/super.c:431 kill_anon_super+0x3f/0x60 fs/super.c:1006 v9fs_kill_super+0x3e/0xa0 fs/9p/vfs_super.c:230 deactivate_locked_super+0x74/0xe0 fs/super.c:319 kobject: 'loop2' (ffff8880a4a9b1e0): kobject_uevent_env deactivate_super fs/super.c:350 [inline] deactivate_super+0x85/0xa0 fs/super.c:346 cleanup_mnt+0xb2/0x150 fs/namespace.c:1183 __cleanup_mnt+0x16/0x20 fs/namespace.c:1190 task_work_run+0x114/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1da/0x220 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4bc/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459a59 RSP: 002b:00007f4c5985bc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000459a59 RDX: 0000000000000000 RSI: 000000000000000b RDI: 0000000020000140 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4c5985c6d4 R13: 00000000004c94fd R14: 00000000004e0d00 R15: 00000000ffffffff Code: e9 56 kobject: '9p-238' (ffff8880a8b88d90): kobject_uevent_env ff ff ff 4c 89 e1 48 c7 c7 20 33 9d 86 e8 bf c2 72 fe 0f 0b 48 89 f2 4c 89 kobject: 'loop2' (ffff8880a4a9b1e0): fill_kobj_path: path = '/devices/virtual/block/loop2' e1 4c 89 ee 48 c7 c7 60 34 9d 86 e8 a8 c2 72 fe <0f> 0b 48 89 f1 48 c7 c7 e0 33 9d 86 4c 89 e6 e8 94 c2 72 fe 0f RIP: __list_add_valid.cold+0x26/0x3c lib/list_debug.c:29 RSP: ffff8880985c7a00 ---[ end trace 8b9ff4726aeeba77 ]---