loop9: detected capacity change from 0 to 32768
------------[ cut here ]------------
WARNING: CPU: 1 PID: 13098 at fs/jfs/jfs_dmap.c:2875 dbAdjTree+0x310/0x400 fs/jfs/jfs_dmap.c:2875
Modules linked in:
CPU: 1 UID: 0 PID: 13098 Comm: syz.9.1499 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:dbAdjTree+0x310/0x400 fs/jfs/jfs_dmap.c:2875
Code: e8 35 68 70 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 f6 6d 70 fe e8 f1 6d 70 fe 90 <0f> 0b 90 eb e2 e8 b6 00 d8 fe e9 20 fe ff ff e8 ac 00 d8 fe e9 47
RSP: 0018:ffffc9000b32efd8 EFLAGS: 00010287
RAX: 0000000000009f74 RBX: 0000000000002057 RCX: ffffc90020405000
RDX: 0000000000080000 RSI: ffffffff834bf66f RDI: 0000000000000004
RBP: ffff88805c7c4010 R08: 0000000000000004 R09: 0000000000000155
R10: 0000000000002057 R11: 0000000000000000 R12: 0000000000000155
R13: 0000000000002057 R14: 0000000000000005 R15: 0000000000000002
FS:  00007f25321b66c0(0000) GS:ffff888124ade000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f440bd525e9 CR3: 0000000069485000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 dbSplit+0x133/0x190 fs/jfs/jfs_dmap.c:2648
 dbAllocBits+0x14a/0x630 fs/jfs/jfs_dmap.c:2193
 dbAllocDmap+0x5c/0x110 fs/jfs/jfs_dmap.c:2034
 dbAllocNext+0x346/0x420 fs/jfs/jfs_dmap.c:1171
 dbAlloc+0x32f/0xac0 fs/jfs/jfs_dmap.c:805
 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:3509 [inline]
 jfs_direct_IO+0x106/0x2c0 fs/jfs/inode.c:339
 generic_file_direct_write+0x19a/0x410 mm/filemap.c:4176
 __generic_file_write_iter+0x11b/0x240 mm/filemap.c:4345
 generic_file_write_iter+0xe1/0x3c0 mm/filemap.c:4385
 iter_file_splice_write+0xa24/0x12e0 fs/splice.c:738
 do_splice_from fs/splice.c:938 [inline]
 direct_splice_actor+0x192/0x6c0 fs/splice.c:1161
 splice_direct_to_actor+0x345/0xa30 fs/splice.c:1105
 do_splice_direct_actor fs/splice.c:1204 [inline]
 do_splice_direct+0x174/0x240 fs/splice.c:1230
 do_sendfile+0xb06/0xe50 fs/read_write.c:1370
 __do_sys_sendfile64 fs/read_write.c:1431 [inline]
 __se_sys_sendfile64 fs/read_write.c:1417 [inline]
 __x64_sys_sendfile64+0x1d8/0x220 fs/read_write.c:1417
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f253138eec9
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:00007f25321b6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f25315e5fa0 RCX: 00007f253138eec9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007f2531411f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f25315e6038 R14: 00007f25315e5fa0 R15: 00007ffe7e5deb68
 </TASK>