loop2: detected capacity change from 0 to 32768 ocfs2: Mounting device (7,2) on (node local, slot 0) with ordered data mode. ------------[ cut here ]------------ kernel BUG at fs/ocfs2/suballoc.c:1443! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 1 UID: 0 PID: 7247 Comm: syz.2.355 Not tainted 6.16.0-syzkaller-06699-ge8d780dcd957 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1443 [inline] RIP: 0010:ocfs2_claim_suballoc_bits+0x243c/0x2450 fs/ocfs2/suballoc.c:1996 Code: c2 fb ff ff e8 a5 29 1a fe 90 0f 0b e8 9d 29 1a fe 90 0f 0b e8 95 29 1a fe 90 0f 0b e8 8d 29 1a fe 90 0f 0b e8 85 29 1a fe 90 <0f> 0b e8 7d 29 1a fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 RSP: 0018:ffffc9000e36ee80 EFLAGS: 00010287 RAX: ffffffff83a58c8b RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9000bf62000 RSI: 0000000000000dc8 RDI: 0000000000000dc9 RBP: ffffc9000e36f110 R08: ffffc9000e36f1a0 R09: ffffc9000e36f1a0 R10: dffffc0000000000 R11: fffff52001c6de39 R12: ffff88802718cd88 R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff11004e319b1 FS: 00007fe4d3a5b6c0(0000) GS:ffff888125d7e000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe4d3a39f98 CR3: 000000003090e000 CR4: 0000000000350ef0 Call Trace: ocfs2_claim_new_inode+0x332/0x7a0 fs/ocfs2/suballoc.c:2292 ocfs2_mknod_locked+0x100/0x250 fs/ocfs2/namei.c:634 ocfs2_mknod+0x10c7/0x2050 fs/ocfs2/namei.c:381 ocfs2_create+0x1a5/0x440 fs/ocfs2/namei.c:673 lookup_open fs/namei.c:3708 [inline] open_last_lookups fs/namei.c:3807 [inline] path_openat+0x14f4/0x3830 fs/namei.c:4043 do_filp_open+0x1fa/0x410 fs/namei.c:4073 do_sys_openat2+0x121/0x1c0 fs/open.c:1435 do_sys_open fs/open.c:1450 [inline] __do_sys_open fs/open.c:1458 [inline] __se_sys_open fs/open.c:1454 [inline] __x64_sys_open+0x11e/0x150 fs/open.c:1454 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe4d2b8e9a9 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:00007fe4d3a5b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007fe4d2db5fa0 RCX: 00007fe4d2b8e9a9 RDX: 0000000000000000 RSI: 000000000014927e RDI: 0000200000000180 RBP: 00007fe4d2c10d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fe4d2db5fa0 R15: 00007fff43eb60f8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_find_victim_chain fs/ocfs2/suballoc.c:1443 [inline] RIP: 0010:ocfs2_claim_suballoc_bits+0x243c/0x2450 fs/ocfs2/suballoc.c:1996 Code: c2 fb ff ff e8 a5 29 1a fe 90 0f 0b e8 9d 29 1a fe 90 0f 0b e8 95 29 1a fe 90 0f 0b e8 8d 29 1a fe 90 0f 0b e8 85 29 1a fe 90 <0f> 0b e8 7d 29 1a fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 RSP: 0018:ffffc9000e36ee80 EFLAGS: 00010287 RAX: ffffffff83a58c8b RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9000bf62000 RSI: 0000000000000dc8 RDI: 0000000000000dc9 RBP: ffffc9000e36f110 R08: ffffc9000e36f1a0 R09: ffffc9000e36f1a0 R10: dffffc0000000000 R11: fffff52001c6de39 R12: ffff88802718cd88 R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff11004e319b1 FS: 00007fe4d3a5b6c0(0000) GS:ffff888125d7e000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe4d3a39f98 CR3: 000000003090e000 CR4: 0000000000350ef0