loop8: detected capacity change from 0 to 32768
ocfs2: Mounting device (7,8) on (node local, slot 0) with writeback data mode.
---------[  310.658496][T13490] ------------[ cut here ]------------
kernel BUG at fs/ocfs2/aops.c:1159!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 13490 Comm: syz.8.293 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:ocfs2_write_cluster fs/ocfs2/aops.c:1159 [inline]
RIP: 0010:ocfs2_write_cluster_by_desc+0x1cc1/0x1cf0 fs/ocfs2/aops.c:1219
Code: 03 48 8d bc 24 10 02 00 00 48 c7 c6 50 23 ea 8c ba 6a 04 00 00 48 c7 c1 40 81 2a 8b e8 88 50 1b 00 90 0f 0b e8 30 40 2a fe 90 <0f> 0b e8 28 40 2a fe 90 0f 0b e8 20 40 2a fe 90 0f 0b e8 18 40 2a
RSP: 0018:ffffc90004b6ecc0 EFLAGS: 00010283
RAX: ffffffff83940d10 RBX: ffff88803776c014 RCX: 0000000000080000
RDX: ffffc900053b2000 RSI: 00000000000005df RDI: 00000000000005e0
RBP: ffffc90004b6eff0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1deecaf R12: ffff888035444000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88803776c014
FS:  00007fd442b866c0(0000) GS:ffff888126bcb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff9b5094000 CR3: 0000000039a30000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ocfs2_write_begin_nolock+0x31a3/0x4340 fs/ocfs2/aops.c:1796
 ocfs2_write_begin+0x1bb/0x310 fs/ocfs2/aops.c:1884
 generic_perform_write+0x29d/0x8c0 mm/filemap.c:4242
 ocfs2_file_write_iter+0x157d/0x1d20 fs/ocfs2/file.c:2469
 do_iter_readv_writev+0x632/0x8d0 fs/read_write.c:-1
 vfs_writev+0x323/0x970 fs/read_write.c:1057
 do_pwritev fs/read_write.c:1153 [inline]
 __do_sys_pwritev2 fs/read_write.c:1211 [inline]
 __se_sys_pwritev2+0x17c/0x2a0 fs/read_write.c:1202
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd44491eec9
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:00007fd442b86038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007fd444b75fa0 RCX: 00007fd44491eec9
RDX: 0000000000000001 RSI: 00002000000001c0 RDI: 0000000000000007
RBP: 00007fd4449a1f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000e7b R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd444b76038 R14: 00007fd444b75fa0 R15: 00007ffc9779cfd8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_write_cluster fs/ocfs2/aops.c:1159 [inline]
RIP: 0010:ocfs2_write_cluster_by_desc+0x1cc1/0x1cf0 fs/ocfs2/aops.c:1219
Code: 03 48 8d bc 24 10 02 00 00 48 c7 c6 50 23 ea 8c ba 6a 04 00 00 48 c7 c1 40 81 2a 8b e8 88 50 1b 00 90 0f 0b e8 30 40 2a fe 90 <0f> 0b e8 28 40 2a fe 90 0f 0b e8 20 40 2a fe 90 0f 0b e8 18 40 2a
RSP: 0018:ffffc90004b6ecc0 EFLAGS: 00010283
RAX: ffffffff83940d10 RBX: ffff88803776c014 RCX: 0000000000080000
RDX: ffffc900053b2000 RSI: 00000000000005df RDI: 00000000000005e0
RBP: ffffc90004b6eff0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1deecaf R12: ffff888035444000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88803776c014
FS:  00007fd442b866c0(0000) GS:ffff888126bcb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff9b51faa90 CR3: 0000000039a30000 CR4: 00000000003526f0