loop1: detected capacity change from 0 to 32768
------------[ cut here ]------------
WARNING: CPU: 0 PID: 12463 at fs/jfs/jfs_dmap.c:2875 dbAdjTree+0x448/0x4d0 fs/jfs/jfs_dmap.c:2875
Modules linked in:
CPU: 0 PID: 12463 Comm: syz.1.1530 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:dbAdjTree+0x448/0x4d0 fs/jfs/jfs_dmap.c:2875
Code: e8 bd a5 df fe e9 5a ff ff ff e8 f3 5a 88 fe eb 05 e8 ec 5a 88 fe 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 d8 5a 88 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:ffffc9000b947478 EFLAGS: 00010287
RAX: ffffffff82fd3cc8 RBX: ffff888024616010 RCX: 0000000000080000
RDX: ffffc9000c9da000 RSI: 00000000000298bc RDI: 00000000000298bd
RBP: 0000000000002057 R08: 0000000000000000 R09: 1ffffd40001230b0
R10: dffffc0000000000 R11: fffff940001230b1 R12: ffff888024616018
R13: dffffc0000000000 R14: 0000000000000005 R15: 0000000000000155
FS:  00007f0f33c096c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000014000 CR3: 0000000024943000 CR4: 00000000003506f0
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+0x468/0xba0 fs/jfs/jfs_dmap.c:805
 extBalloc fs/jfs/jfs_extent.c:326 [inline]
 extAlloc+0x4d6/0xf30 fs/jfs/jfs_extent.c:122
 jfs_get_block+0x347/0xab0 fs/jfs/inode.c:248
 __block_write_begin_int+0x566/0x1ad0 fs/buffer.c:2124
 __block_write_begin fs/buffer.c:2173 [inline]
 block_write_begin+0x9a/0x1e0 fs/buffer.c:2234
 jfs_write_begin+0x35/0x70 fs/jfs/inode.c:299
 generic_perform_write+0x2fb/0x5b0 mm/filemap.c:4016
 generic_file_write_iter+0xaf/0x2e0 mm/filemap.c:4137
 call_write_iter include/linux/fs.h:2018 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x43b/0x940 fs/read_write.c:584
 ksys_write+0x147/0x250 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f0f32d8eec9
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:00007f0f33c09038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f0f32fe5fa0 RCX: 00007f0f32d8eec9
RDX: 00000000ffffff6a RSI: 0000200000000000 RDI: 0000000000000004
RBP: 00007f0f32e11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0f32fe6038 R14: 00007f0f32fe5fa0 R15: 00007ffc50bed228
 </TASK>