------------[ cut here ]------------
lp >= size || lp < 0
WARNING: fs/jfs/jfs_dmap.c:2875 at dbAdjTree+0x454/0x4e0, CPU#1: jfsCommit/116
Modules linked in:
CPU: 1 UID: 0 PID: 116 Comm: jfsCommit Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:dbAdjTree+0x454/0x4e0
Code: 5a ff ff ff e8 bd db 6a fe eb 05 e8 b6 db 6a fe 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d e9 d3 78 55 08 cc e8 9d db 6a fe 90 <0f> 0b 90 eb e1 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c e1 fb ff ff
RSP: 0018:ffffc90003147a08 EFLAGS: 00010293
RAX: ffffffff835ab053 RBX: ffff8881a6ac4010 RCX: ffff8881037a3a00
RDX: 0000000000000000 RSI: 0000000000000155 RDI: 0000000000020056
RBP: 0000000000020056 R08: ffffea00069ab107 R09: 1ffffd4000d35620
R10: dffffc0000000000 R11: fffff94000d35621 R12: ffff8881a6ac4018
R13: dffffc0000000000 R14: 0000000000000004 R15: 0000000000000155
FS:  0000000000000000(0000) GS:ffff8882a946c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc403314440 CR3: 00000001ad3a6000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 dbJoin+0x238/0x300
 dbFreeBits+0x4e1/0xdb0
 dbFree+0x336/0x650
 txFreeMap+0x7ff/0xde0
 txUpdateMap+0x308/0x9c0
 jfs_lazycommit+0x43d/0xaa0
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>
