------------[ cut here ]------------
WARNING: CPU: 1 PID: 9904 at fs/jfs/jfs_dmap.c:2875 dbAdjTree+0x448/0x4d0 fs/jfs/jfs_dmap.c:2875
Modules linked in:
CPU: 1 PID: 9904 Comm: syz.2.1316 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:dbAdjTree+0x448/0x4d0 fs/jfs/jfs_dmap.c:2875
Code: e8 1d 67 e6 fe e9 5a ff ff ff e8 f3 4a 96 fe eb 05 e8 ec 4a 96 fe 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 d8 4a 96 fe <0f> 0b eb e8 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ee fb ff ff 4c
RSP: 0018:ffffc9000620f418 EFLAGS: 00010283
RAX: ffffffff82ea8548 RBX: ffff888031b39010 RCX: 0000000000080000
RDX: ffffc9000cda9000 RSI: 0000000000022057 RDI: 0000000000022058
RBP: 0000000000002057 R08: 0000000000000000 R09: fffff9400018d9c9
R10: fffff9400018d9c9 R11: 1ffffd400018d9c8 R12: ffff888031b39018
R13: dffffc0000000000 R14: 0000000000000005 R15: 0000000000000155
FS:  00007f3e11f416c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000014000 CR3: 000000001d697000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 dbSplit+0x132/0x200 fs/jfs/jfs_dmap.c:2648
 dbAllocBits+0x50c/0xa40 fs/jfs/jfs_dmap.c:2193
 dbAllocDmap+0x6b/0x140 fs/jfs/jfs_dmap.c:2034
 dbAlloc+0x464/0xb90 fs/jfs/jfs_dmap.c:805
 extBalloc fs/jfs/jfs_extent.c:326 [inline]
 extAlloc+0x4d2/0xf30 fs/jfs/jfs_extent.c:122
 jfs_get_block+0x343/0xab0 fs/jfs/inode.c:248
 __block_write_begin_int+0x54b/0x1a70 fs/buffer.c:1991
 __block_write_begin fs/buffer.c:2041 [inline]
 block_write_begin+0x96/0x1e0 fs/buffer.c:2102
 jfs_write_begin+0x31/0x70 fs/jfs/inode.c:304
 generic_perform_write+0x2db/0x560 mm/filemap.c:3846
 __generic_file_write_iter+0x172/0x430 mm/filemap.c:3974
 generic_file_write_iter+0xab/0x2e0 mm/filemap.c:4006
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x44c/0x960 fs/read_write.c:584
 ksys_write+0x143/0x240 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3e1118ebe9
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:00007f3e11f41038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3e113c5fa0 RCX: 00007f3e1118ebe9
RDX: 000000000208e24b RSI: 0000200000000000 RDI: 0000000000000004
RBP: 00007f3e11211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3e113c6038 R14: 00007f3e113c5fa0 R15: 00007ffd5f8759d8
 </TASK>