libceph: parse_ips bad ip ''
libceph: parse_ips bad ip ''
PANIC: double fault, error_code: 0x0
==================================================================
CPU: 0 PID: 20637 Comm: syz-executor3 Not tainted 4.18.0-rc3+ #47
BUG: KASAN: stack-out-of-bounds in unlink_anon_vmas+0x864/0xa60 mm/rmap.c:387
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_acquire+0x2e/0x5020 kernel/locking/lockdep.c:3294
Read of size 8 at addr ffff88019a5d4488 by task syz-executor0/20644
Code: 41 

57 41 
CPU: 1 PID: 20644 Comm: syz-executor0 Not tainted 4.18.0-rc3+ #47
89 cf 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
41 56 
Call Trace:
41 55 
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
49 89 
fd 41 
54 45 
89 cc 
53 65 
 print_address_description+0x6c/0x20b mm/kasan/report.c:256
4c 8b 
34 25 
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412
40 ee 
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
01 00 
 unlink_anon_vmas+0x864/0xa60 mm/rmap.c:387
48 83 
e4 f0 
48 81 
ec 60 
03 00 
 free_pgtables+0x271/0x380 mm/memory.c:641
00 48 
 exit_mmap+0x2d1/0x5b0 mm/mmap.c:3106
8b 45 
10 <89> 
94 24 
80 00 
 __mmput kernel/fork.c:970 [inline]
 mmput+0x265/0x620 kernel/fork.c:991
00 00 
48 ba 
00 00 
00 00 
00 fc 
ff df 
48 89 
84 24 
 exit_mm kernel/exit.c:544 [inline]
 do_exit+0xea9/0x2750 kernel/exit.c:852
98 
RSP: 0018:ffff8801985ffee0 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 1ffff100330c0058 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88f92620
RBP: ffff880198600268 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: dffffc0000000000 R12: 0000000000000000
R13: ffffffff88f92620 R14: ffff880195b16740 R15: 0000000000000002
FS:  00007f196745a700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8801985ffed8 CR3: 00000001ce578000 CR4: 00000000001406f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000020000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace: