ocfs2: Mounting device (7,1) on (node local, slot 0) with ordered data mode.
------------[ cut here ]------------
kernel BUG at fs/ocfs2/suballoc.c:1387!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 8445 Comm: syz.1.759 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1387 [inline]
RIP: 0010:ocfs2_claim_suballoc_bits+0x2153/0x22d0 fs/ocfs2/suballoc.c:1927
Code: c3 9d 8a fe e9 66 fb ff ff e8 09 6c 3a fe 0f 0b e8 02 6c 3a fe 0f 0b e8 fb 6b 3a fe 0f 0b e8 f4 6b 3a fe 0f 0b e8 ed 6b 3a fe <0f> 0b e8 e6 6b 3a fe 0f 0b 4d 89 f4 65 44 8b 35 a9 a5 bb 7c 48 c7
RSP: 0018:ffffc90003b16920 EFLAGS: 00010287
RAX: ffffffff834673e3 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90005dc9000 RSI: 00000000000026b1 RDI: 00000000000026b2
RBP: ffffc90003b16bb0 R08: ffffc90003b16c40 R09: ffffc90003b16c40
R10: fffff52000762d8c R11: 1ffff92000762d88 R12: ffff888042670400
R13: ffff8880291b6788 R14: 0000000000000002 R15: dffffc0000000000
FS:  00007fd4d7f3e6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff75939d000 CR3: 0000000077bf4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ocfs2_claim_new_inode+0x326/0x780 fs/ocfs2/suballoc.c:2210
 ocfs2_mknod_locked+0xfd/0x240 fs/ocfs2/namei.c:635
 ocfs2_mknod+0x1097/0x2350 fs/ocfs2/namei.c:381
 ocfs2_create+0x1b6/0x4a0 fs/ocfs2/namei.c:674
 lookup_open fs/namei.c:3490 [inline]
 open_last_lookups fs/namei.c:3558 [inline]
 path_openat+0x1187/0x2e70 fs/namei.c:3788
 do_filp_open+0x1c1/0x3c0 fs/namei.c:3818
 file_open_name fs/open.c:1265 [inline]
 filp_open+0x173/0x1d0 fs/open.c:1285
 do_coredump+0x1ad7/0x22b0 fs/coredump.c:765
 get_signal+0x10aa/0x1350 kernel/signal.c:2857
 arch_do_signal_or_restart+0xb7/0x1240 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd4d704f6b0
Code: 48 c1 e8 12 83 e0 01 88 15 42 60 ec 00 88 05 3f 60 ec 00 c3 50 48 8d 35 e9 48 1c 00 48 8d 3d ef 48 1c 00 31 c0 e8 20 f7 ff ff <53> 89 fb 48 83 ec 10 64 8b 04 25 94 ff ff ff 85 c0 74 2a 89 fe 31
RSP: 002b:00007fd4d7f3db38 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000000 RBX: 00007fd4d73e5fa8 RCX: 00007fd4d718f749
RDX: 00007fd4d7f3db40 RSI: 00007fd4d7f3dc70 RDI: 000000000000000b
RBP: 00007fd4d73e5fa0 R08: 002e8be60e7f7d3a R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd4d73e6038 R14: 00007ffebb8c7860 R15: 00007ffebb8c7948
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1387 [inline]
RIP: 0010:ocfs2_claim_suballoc_bits+0x2153/0x22d0 fs/ocfs2/suballoc.c:1927
Code: c3 9d 8a fe e9 66 fb ff ff e8 09 6c 3a fe 0f 0b e8 02 6c 3a fe 0f 0b e8 fb 6b 3a fe 0f 0b e8 f4 6b 3a fe 0f 0b e8 ed 6b 3a fe <0f> 0b e8 e6 6b 3a fe 0f 0b 4d 89 f4 65 44 8b 35 a9 a5 bb 7c 48 c7
RSP: 0018:ffffc90003b16920 EFLAGS: 00010287
RAX: ffffffff834673e3 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90005dc9000 RSI: 00000000000026b1 RDI: 00000000000026b2
RBP: ffffc90003b16bb0 R08: ffffc90003b16c40 R09: ffffc90003b16c40
R10: fffff52000762d8c R11: 1ffff92000762d88 R12: ffff888042670400
R13: ffff8880291b6788 R14: 0000000000000002 R15: dffffc0000000000
FS:  00007fd4d7f3e6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffde000000 CR3: 0000000077bf4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400