9pnet_virtio: no channels available for device (null)
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 10918 Comm: syz-executor6 Not tainted 4.9.124-g6a1b592 #30
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff880198911800 task.stack: ffff8801d8fa8000
RIP: 0010:[<ffffffff81ed68cf>]  [<ffffffff81ed68cf>] strlen+0x1f/0xa0 lib/string.c:478
RSP: 0018:ffff8801d8faf768  EFLAGS: 00010292
RAX: dffffc0000000000 RBX: 1ffff1003b1f5ef3 RCX: ffffc900076ed000
RDX: 0000000000000000 RSI: ffffffff839cd355 RDI: 0000000000000000
RBP: ffff8801d8faf780 R08: ffffed003b452753 R09: 0000000000000000
R10: ffffed003b452752 R11: ffff8801da293a97 R12: 0000000000000000
R13: ffff8801ccd80058 R14: 0000000000000000 R15: ffff8801ccd80000
FS:  00007f036eef3700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3a5942adb8 CR3: 00000001d53a6000 CR4: 00000000001606f0
Stack:
 0000000000000296 1ffff1003b1f5ef3 dffffc0000000000 ffff8801d8faf8c0
 ffffffff839cd368 ffff8801989120c0 0000000041b58ab3 ffffffff8442e3e0
 ffffffff839cd2d0 0000000000000189 0000000000000000 ffff8801d8faf7e8
Call Trace:
 [<ffffffff839cd368>] p9_fd_create_unix+0x98/0x260 net/9p/trans_fd.c:988
 [<ffffffff839bbf2f>] p9_client_create+0x6ff/0x10a0 net/9p/client.c:1036
 [<ffffffff819603a3>] v9fs_session_init+0x333/0x13a0 fs/9p/v9fs.c:343
 [<ffffffff81951c9d>] v9fs_mount+0x7d/0x810 fs/9p/vfs_super.c:130
 [<ffffffff81582a3c>] mount_fs+0x28c/0x370 fs/super.c:1206
 [<ffffffff815e2321>] vfs_kern_mount.part.29+0xd1/0x3d0 fs/namespace.c:1000
 [<ffffffff815e9b49>] vfs_kern_mount fs/namespace.c:982 [inline]
 [<ffffffff815e9b49>] do_new_mount fs/namespace.c:2537 [inline]
 [<ffffffff815e9b49>] do_mount+0x3c9/0x2740 fs/namespace.c:2859
 [<ffffffff815ec89e>] SYSC_mount fs/namespace.c:3075 [inline]
 [<ffffffff815ec89e>] SyS_mount+0xfe/0x110 fs/namespace.c:3052
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff83a019d3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: 87 90 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 
RIP  [<ffffffff81ed68cf>] strlen+0x1f/0xa0 lib/string.c:478
 RSP <ffff8801d8faf768>
---[ end trace 5a120b4cae64fc4d ]---