list_del corruption, ffff88017fb84d28->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:47!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
IPVS: set_ctl: invalid protocol: 46 224.0.0.1:20000
CPU: 0 PID: 7635 Comm: syz-executor1 Not tainted 4.19.0+ #79
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_del_entry_valid.cold.1+0x26/0x4a lib/list_debug.c:45
Code: d4 fd 0f 0b 4c 89 e2 48 89 de 48 c7 c7 80 b5 40 88 e8 86 1c d4 fd 0f 0b 4c 89 ea 48 89 de 48 c7 c7 e0 b4 40 88 e8 72 1c d4 fd <0f> 0b 48 89 de 48 c7 c7 40 b6 40 88 e8 61 1c d4 fd 0f 0b 48 89 de
IPVS: set_ctl: invalid protocol: 46 224.0.0.1:20000
RSP: 0018:ffff8801807cf150 EFLAGS: 00010286
RAX: 000000000000004e RBX: ffff88017fb84d28 RCX: ffffc90004286000
RDX: 0000000000000000 RSI: ffffffff8165e6a5 RDI: 0000000000000005
RBP: ffff8801807cf168 R08: ffff8801807c2100 R09: ffffed003b5c5008
R10: ffffed003b5c5008 R11: ffff8801dae28047 R12: dead000000000200
R13: dead000000000100 R14: ffff88017f8a0c00 R15: dffffc0000000000
kobject: 'loop3' (000000003aab623f): kobject_uevent_env
FS:  00007f9e6e953700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
IPVS: set_ctl: invalid protocol: 46 224.0.0.1:20000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f521000 CR3: 00000001ce02e000 CR4: 00000000001406f0
Call Trace:
 __list_del_entry include/linux/list.h:117 [inline]
 list_del include/linux/list.h:125 [inline]
 p9_fd_cancelled+0x80/0x2f0 net/9p/trans_fd.c:712
kobject: 'loop3' (000000003aab623f): fill_kobj_path: path = '/devices/virtual/block/loop3'
 p9_client_flush+0x255/0x2a0 net/9p/client.c:691
 p9_client_rpc+0x1284/0x1480 net/9p/client.c:800
 p9_client_version net/9p/client.c:971 [inline]
 p9_client_create+0xc1b/0x160a net/9p/client.c:1058
kobject: 'loop4' (00000000330c6739): kobject_uevent_env
 v9fs_session_init+0x217/0x1a70 fs/9p/v9fs.c:400
kobject: 'loop4' (00000000330c6739): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop2' (00000000a539afb8): kobject_uevent_env
kobject: 'loop2' (00000000a539afb8): fill_kobj_path: path = '/devices/virtual/block/loop2'
 v9fs_mount+0x7d/0x8f0 fs/9p/vfs_super.c:135
 mount_fs+0xae/0x31d fs/super.c:1261
 vfs_kern_mount.part.35+0xdc/0x4f0 fs/namespace.c:961
VFS: Can't find a Minix filesystem V1 | V2 | V3 on device loop4.
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2457 [inline]
 do_mount+0x581/0x31f0 fs/namespace.c:2789
 ksys_mount+0x12d/0x140 fs/namespace.c:3005
 __do_sys_mount fs/namespace.c:3019 [inline]
 __se_sys_mount fs/namespace.c:3016 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3016
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457569
Code: fd b3 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f9e6e952c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000457569
RDX: 00000000200008c0 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 000000000072c040 R08: 0000000020000a80 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9e6e9536d4
R13: 00000000004c28a1 R14: 00000000004d3c90 R15: 00000000ffffffff
Modules linked in:
---[ end trace 1044ebb87c767ca2 ]---
RIP: 0010:__list_del_entry_valid.cold.1+0x26/0x4a lib/list_debug.c:45
Code: d4 fd 0f 0b 4c 89 e2 48 89 de 48 c7 c7 80 b5 40 88 e8 86 1c d4 fd 0f 0b 4c 89 ea 48 89 de 48 c7 c7 e0 b4 40 88 e8 72 1c d4 fd <0f> 0b 48 89 de 48 c7 c7 40 b6 40 88 e8 61 1c d4 fd 0f 0b 48 89 de
RSP: 0018:ffff8801807cf150 EFLAGS: 00010286
RAX: 000000000000004e RBX: ffff88017fb84d28 RCX: ffffc90004286000
RDX: 0000000000000000 RSI: ffffffff8165e6a5 RDI: 0000000000000005
RBP: ffff8801807cf168 R08: ffff8801807c2100 R09: ffffed003b5c5008
R10: ffffed003b5c5008 R11: ffff8801dae28047 R12: dead000000000200
R13: dead000000000100 R14: ffff88017f8a0c00 R15: dffffc0000000000
kobject: 'loop2' (00000000a539afb8): kobject_uevent_env
FS:  00007f9e6e953700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f521000 CR3: 00000001ce02e000 CR4: 00000000001406f0