R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
R13: 00000000004d3e20 R14: 00000000004c29b6 R15: 0000000000000013
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
CPU: 1 PID: 12473 Comm: syz-executor3 Not tainted 4.19.0-rc5-next-20180924+ #78
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:p9_client_prepare_req.part.6+0x47c/0x940 net/9p/client.c:712
Code: ff 0f 87 fc fc ff ff e8 52 16 eb f9 0f be 85 a4 fe ff ff 4c 89 f2 48 c1 ea 03 89 85 a4 fe ff ff 48 b8 00 00 00 00 00 fc ff df <0f> b6 14 02 4c 89 f0 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 2b
RSP: 0018:ffff8801beb1f1e0 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90001bb4000
RDX: 000000000000000b RSI: ffffffff8792436e RDI: 0000000000000282
RBP: ffff8801beb1f358 R08: ffff8801d9746540 R09: ffffed003b585b57
R10: ffffed003b585b57 R11: ffff8801dac2dabb R12: ffff8801d30c7300
R13: 0000000000002000 R14: 000000000000005e R15: 0000000000002000
FS:  00007fbf1e064700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000
IPVS: ftp: loaded support on port[0] = 21
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000930004 CR3: 00000001958c7000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kobject: 'loop0' (000000000f1e126f): kobject_uevent_env
kobject: 'loop0' (000000000f1e126f): fill_kobj_path: path = '/devices/virtual/block/loop0'
 p9_client_prepare_req net/9p/client.c:744 [inline]
 p9_client_rpc+0x231/0x1320 net/9p/client.c:744
 p9_client_version net/9p/client.c:961 [inline]
 p9_client_create+0x9b7/0x1769 net/9p/client.c:1046
 v9fs_session_init+0x217/0x1bb0 fs/9p/v9fs.c:421
 v9fs_mount+0x7c/0x8f0 fs/9p/vfs_super.c:135
 legacy_get_tree+0x131/0x460 fs/fs_context.c:718
 vfs_get_tree+0x1cb/0x5c0 fs/super.c:1795
 do_new_mount fs/namespace.c:2648 [inline]
 do_mount+0x70c/0x1d90 fs/namespace.c:2974
 ksys_mount+0x12d/0x140 fs/namespace.c:3190
 __do_sys_mount fs/namespace.c:3204 [inline]
 __se_sys_mount fs/namespace.c:3201 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3201
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457679
Code: 1d b4 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fbf1e063c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fbf1e0646d4 RCX: 0000000000457679
RDX: 0000000020000780 RSI: 0000000020000480 RDI: 0000000000000000
RBP: 000000000072bf00 R08: 0000000020000700 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
R13: 00000000004d3e20 R14: 00000000004c29b6 R15: 0000000000000013
Modules linked in:
---[ end trace 42e3854144ea86c7 ]---
kobject: 'rx-0' (00000000b2e85343): kobject_cleanup, parent 00000000497aa46d
RIP: 0010:p9_client_prepare_req.part.6+0x47c/0x940 net/9p/client.c:712
Code: ff 0f 87 fc fc ff ff e8 52 16 eb f9 0f be 85 a4 fe ff ff 4c 89 f2 48 c1 ea 03 89 85 a4 fe ff ff 48 b8 00 00 00 00 00 fc ff df <0f> b6 14 02 4c 89 f0 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 2b
RSP: 0018:ffff8801beb1f1e0 EFLAGS: 00010203
kobject: 'loop4' (00000000a18c5bab): kobject_uevent_env
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90001bb4000
kobject: 'rx-0' (00000000b2e85343): auto cleanup 'remove' event
RDX: 000000000000000b RSI: ffffffff8792436e RDI: 0000000000000282
RBP: ffff8801beb1f358 R08: ffff8801d9746540 R09: ffffed003b585b57
kobject: 'loop4' (00000000a18c5bab): fill_kobj_path: path = '/devices/virtual/block/loop4'
R10: ffffed003b585b57 R11: ffff8801dac2dabb R12: ffff8801d30c7300
kobject: 'rx-0' (00000000b2e85343): kobject_uevent_env
R13: 0000000000002000 R14: 000000000000005e R15: 0000000000002000
FS:  00007fbf1e064700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000
kobject: 'rx-0' (00000000b2e85343): kobject_uevent_env: uevent_suppress caused the event to drop!
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000072c000 CR3: 00000001958c7000 CR4: 00000000001406e0
kobject: 'rx-0' (00000000b2e85343): auto cleanup kobject_del
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
kobject: 'rx-0' (00000000b2e85343): calling ktype release
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
kobject: 'rx-0': free name
kobject: 'loop0' (000000000f1e126f): kobject_uevent_env