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kernel BUG at fs/ocfs2/suballoc.c:1443!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 6149 Comm: syz.1.51 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:ocfs2_claim_suballoc_bits+0x243c/0x2450
Code: c2 fb ff ff e8 75 63 18 fe 90 0f 0b e8 6d 63 18 fe 90 0f 0b e8 65 63 18 fe 90 0f 0b e8 5d 63 18 fe 90 0f 0b e8 55 63 18 fe 90 <0f> 0b e8 4d 63 18 fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0018:ffffc9000305f2a0 EFLAGS: 00010287
RAX: ffffffff83a74efb RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000708a000 RSI: 000000000000119e RDI: 000000000000119f
RBP: ffffc9000305f530 R08: ffffc9000305f5c0 R09: 0000000000000000
R10: ffffc9000305f5c0 R11: fffff5200060bebd R12: ffff88810e8b0c88
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff11021d16191
FS:  00007f6ecd2076c0(0000) GS:ffff8881a3c15000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6ecd1e5fc8 CR3: 0000000025e1a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ocfs2_claim_new_inode+0x332/0x7a0
 ocfs2_mknod_locked+0x100/0x250
 ocfs2_mknod+0x10c7/0x2050
 ocfs2_mkdir+0x191/0x440
 vfs_mkdir+0x306/0x510
 do_mkdirat+0x247/0x590
 __x64_sys_mkdirat+0x87/0xa0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6ecc38d417
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 02 01 00 00 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:00007f6ecd206e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f6ecd206ef0 RCX: 00007f6ecc38d417
RDX: 00000000000001ff RSI: 0000200000000040 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000040
R13: 00007f6ecd206eb0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_claim_suballoc_bits+0x243c/0x2450
Code: c2 fb ff ff e8 75 63 18 fe 90 0f 0b e8 6d 63 18 fe 90 0f 0b e8 65 63 18 fe 90 0f 0b e8 5d 63 18 fe 90 0f 0b e8 55 63 18 fe 90 <0f> 0b e8 4d 63 18 fe 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90
RSP: 0018:ffffc9000305f2a0 EFLAGS: 00010287
RAX: ffffffff83a74efb RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000708a000 RSI: 000000000000119e RDI: 000000000000119f
RBP: ffffc9000305f530 R08: ffffc9000305f5c0 R09: 0000000000000000
R10: ffffc9000305f5c0 R11: fffff5200060bebd R12: ffff88810e8b0c88
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff11021d16191
FS:  00007f6ecd2076c0(0000) GS:ffff8881a3c15000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 0000000025e1a000 CR4: 00000000000006f0
