syzbot

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lp >= size || lp < 0
WARNING: fs/jfs/jfs_dmap.c:2962 at dbAdjTree fs/jfs/jfs_dmap.c:2962 [inline], CPU#0: jfsCommit/127
WARNING: fs/jfs/jfs_dmap.c:2962 at dbJoin+0xc33/0xd60 fs/jfs/jfs_dmap.c:2930, CPU#0: jfsCommit/127
Modules linked in:
CPU: 0 UID: 0 PID: 127 Comm: jfsCommit Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:dbAdjTree fs/jfs/jfs_dmap.c:2962 [inline]
RIP: 0010:dbJoin+0xc33/0xd60 fs/jfs/jfs_dmap.c:2930
Code: eb 0c e8 d0 21 6a fe eb 05 e8 c9 21 6a fe 31 c0 48 83 c4 68 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 ae 21 6a fe 90 <0f> 0b 90 eb df 44 89 e9 80 e1 07 38 c1 0f 8c 00 f4 ff ff 4c 89 ef
RSP: 0000:ffffc9000386f5b0 EFLAGS: 00010293
RAX: ffffffff835ad982 RBX: 0000000000000155 RCX: ffff88801e7a0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff9400020cb59 R12: dffffc0000000000
R13: ffff88804196b020 R14: 0000000000020056 R15: 0000000000000004
FS:  0000000000000000(0000) GS:ffff888126144000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f744b2d9000 CR3: 0000000033648000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 dbFreeBits+0x4a2/0xd70 fs/jfs/jfs_dmap.c:2427
 dbFreeDmap fs/jfs/jfs_dmap.c:2176 [inline]
 dbFree+0x324/0x650 fs/jfs/jfs_dmap.c:485
 txFreeMap+0x9e6/0xde0 fs/jfs/jfs_txnmgr.c:2517
 xtTruncate+0xd16/0x2eb0 fs/jfs/jfs_xtree.c:2481
 jfs_free_zero_link+0x35b/0x4c0 fs/jfs/namei.c:760
 jfs_evict_inode+0x356/0x430 fs/jfs/inode.c:159
 evict+0x624/0xb50 fs/inode.c:828
 txLazyCommit fs/jfs/jfs_txnmgr.c:2666 [inline]
 jfs_lazycommit+0x3f3/0xa20 fs/jfs/jfs_txnmgr.c:2735
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>