------------[ cut here ]------------
WARNING: fs/jfs/jfs_dmap.c:2875 at dbAdjTree+0x310/0x400 fs/jfs/jfs_dmap.c:2875, CPU#0: syz.3.990/9532
Modules linked in:
CPU: 0 UID: 0 PID: 9532 Comm: syz.3.990 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:dbAdjTree+0x310/0x400 fs/jfs/jfs_dmap.c:2875
Code: e8 a5 19 6b fe 0f b6 14 24 38 da 0f 85 89 fe ff ff 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f e9 06 20 6b fe e8 01 20 6b fe 90 <0f> 0b 90 eb e2 e8 46 07 d4 fe e9 20 fe ff ff e8 3c 07 d4 fe e9 47
RSP: 0018:ffffc90003d8f270 EFLAGS: 00010287
RAX: 0000000000005cb7 RBX: 0000000000004059 RCX: ffffc9000d9be000
RDX: 0000000000080000 RSI: ffffffff8353cb6f RDI: 0000000000000004
RBP: ffff888041c10010 R08: 0000000000000004 R09: 0000000000000155
R10: 0000000000004059 R11: ffff8880354bc830 R12: 0000000000000155
R13: 0000000000004059 R14: 0000000000000006 R15: 0000000000000004
FS:  00007f418efab6c0(0000) GS:ffff8881248f2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f418e172100 CR3: 000000007717d000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 dbSplit+0x133/0x190 fs/jfs/jfs_dmap.c:2648
 dbAllocBits+0x2c1/0x630 fs/jfs/jfs_dmap.c:2234
 dbAllocDmap+0x5c/0x110 fs/jfs/jfs_dmap.c:2034
 dbAllocNear fs/jfs/jfs_dmap.c:1247 [inline]
 dbAlloc+0x79c/0xac0 fs/jfs/jfs_dmap.c:832
 extBalloc fs/jfs/jfs_extent.c:336 [inline]
 extAlloc+0x468/0xf60 fs/jfs/jfs_extent.c:127
 jfs_get_block+0x424/0xb00 fs/jfs/inode.c:254
 get_more_blocks fs/direct-io.c:648 [inline]
 do_direct_IO fs/direct-io.c:936 [inline]
 __blockdev_direct_IO+0x2378/0x3c40 fs/direct-io.c:1243
 blockdev_direct_IO include/linux/fs.h:3075 [inline]
 jfs_direct_IO+0x106/0x2c0 fs/jfs/inode.c:339
 generic_file_direct_write+0x19a/0x410 mm/filemap.c:4248
 __generic_file_write_iter+0x11b/0x240 mm/filemap.c:4417
 generic_file_write_iter+0xe1/0x3d0 mm/filemap.c:4457
 do_iter_readv_writev+0x662/0x9e0 fs/read_write.c:827
 vfs_writev+0x35f/0xde0 fs/read_write.c:1057
 do_pwritev+0x1a6/0x270 fs/read_write.c:1153
 __do_sys_pwritev2 fs/read_write.c:1211 [inline]
 __se_sys_pwritev2 fs/read_write.c:1202 [inline]
 __x64_sys_pwritev2+0xef/0x160 fs/read_write.c:1202
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f418e18f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f418efab038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f418e3e5fa0 RCX: 00007f418e18f749
RDX: 0000000000000001 RSI: 0000200000000240 RDI: 0000000000000004
RBP: 00007f418e213f91 R08: 0000000000000000 R09: 0000000000000003
R10: 0000000000007a00 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f418e3e6038 R14: 00007f418e3e5fa0 R15: 00007ffcbeac6a98
 </TASK>