------------[ cut here ]------------
WARNING: fs/buffer.c:1125 at __getblk_slow fs/buffer.c:1125 [inline], CPU#0: syz.0.142/6525
WARNING: fs/buffer.c:1125 at bdev_getblk+0x580/0x660 fs/buffer.c:1461, CPU#0: syz.0.142/6525
Modules linked in:
CPU: 0 UID: 0 PID: 6525 Comm: syz.0.142 Not tainted 6.16.0-rc5-next-20250708-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__getblk_slow fs/buffer.c:1125 [inline]
RIP: 0010:bdev_getblk+0x580/0x660 fs/buffer.c:1461
Code: 26 fb ff ff e8 61 ef 78 ff 48 c7 c7 a0 fc 99 8b 48 c7 c6 29 0b a0 8d 4c 89 fa 4c 89 e9 e8 48 e1 e0 fe eb bd e8 41 ef 78 ff 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 41 80 3c 07 00 74 08 48 89
RSP: 0000:ffffc9001ade54f0 EFLAGS: 00010293
RAX: ffffffff8246bcef RBX: ffff888022e33998 RCX: ffff88801c768000
RDX: 0000000000000000 RSI: 0000000000000200 RDI: 0000000000000000
RBP: 0000000000000200 R08: 0000000000000000 R09: ffffffff8216f34d
R10: 0000000000000406 R11: 0000000000000000 R12: 1ffff920035bcb1c
R13: ffff888022e33980 R14: 0000000000000200 R15: 1ffff110045c6733
FS:  00007ff2da3d56c0(0000) GS:ffff888125bd7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c390f36 CR3: 000000007d800000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __getblk include/linux/buffer_head.h:380 [inline]
 sb_getblk include/linux/buffer_head.h:386 [inline]
 ocfs2_read_blocks+0x533/0x1540 fs/ocfs2/buffer_head_io.c:236
 ocfs2_read_block fs/ocfs2/buffer_head_io.h:52 [inline]
 ocfs2_read_group_descriptor fs/ocfs2/suballoc.c:303 [inline]
 ocfs2_search_chain+0x28e/0x2430 fs/ocfs2/suballoc.c:1813
 ocfs2_claim_suballoc_bits+0x9d6/0x2450 fs/ocfs2/suballoc.c:2000
 __ocfs2_claim_clusters+0x303/0x8f0 fs/ocfs2/suballoc.c:2421
 ocfs2_convert_inline_data_to_extents+0x83c/0x1230 fs/ocfs2/alloc.c:7133
 ocfs2_try_to_write_inline_data fs/ocfs2/aops.c:1542 [inline]
 ocfs2_write_begin_nolock+0x178d/0x4340 fs/ocfs2/aops.c:1649
 ocfs2_write_begin+0x1bb/0x310 fs/ocfs2/aops.c:1883
 generic_perform_write+0x2c4/0x910 mm/filemap.c:4175
 ocfs2_file_write_iter+0x157a/0x1d10 fs/ocfs2/file.c:2469
 __kernel_write_iter+0x390/0x860 fs/read_write.c:619
 __kernel_write+0xef/0x150 fs/read_write.c:639
 __dump_emit+0x206/0x310 fs/coredump.c:1217
 elf_core_dump+0x2ca2/0x3900 fs/binfmt_elf.c:2054
 coredump_write+0x1166/0x1900 fs/coredump.c:1048
 vfs_coredump+0x1a4b/0x2ab0 fs/coredump.c:1167
 get_signal+0x1109/0x1340 kernel/signal.c:3019
 arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:40 [inline]
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:208 [inline]
 irqentry_exit_to_user_mode+0x81/0x120 kernel/entry/common.c:73
 exc_page_fault+0x9f/0xf0 arch/x86/mm/fault.c:1535
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x86cbfe
Code: Unable to access opcode bytes at 0x86cbd4.
RSP: 002b:0000200000000378 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff2dc7b6080 RCX: 00007ff2dc58e929
RDX: 0000200000000380 RSI: 0000200000000370 RDI: 0000000040000000
RBP: 00007ff2dc610b39 R08: 0000200000000bc0 R09: 0000200000000bc0
R10: 0000200000000900 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff2dc7b6080 R15: 00007ffc2bb71bf8
 </TASK>