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kernel BUG at fs/ocfs2/refcounttree.c:2242!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5315 Comm: syz.0.0 Not tainted 6.15.0-syzkaller-01972-g914873bc7df9 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__ocfs2_decrease_refcount+0x1603/0x1780 fs/ocfs2/refcounttree.c:2242
Code: fe c6 05 96 78 e9 0b 01 90 48 c7 c7 c0 82 ca 8b e8 a2 8c e3 fd 90 0f 0b 90 90 e9 a7 eb ff ff e8 c3 7e bd 07 e8 ee 8b 1f fe 90 <0f> 0b e8 e6 8b 1f fe 90 0f 0b e8 de 8b 1f fe 90 0f 0b e8 d6 8b 1f
RSP: 0018:ffffc9000d686880 EFLAGS: 00010287
RAX: ffffffff83a048c2 RBX: 0000000000000000 RCX: 0000000000100000
RDX: ffffc9000e8cb000 RSI: 00000000000044ab RDI: 00000000000044ac
RBP: ffffc9000d686b40 R08: ffff888000338000 R09: 0000000000000006
R10: 00000000fffffffc R11: 0000000000000002 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffc9000d686930 R15: 0000000000000003
FS:  00007f16e3e6b6c0(0000) GS:ffff88808d291000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f16e3e6afc8 CR3: 000000003fbc7000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ocfs2_decrease_refcount+0x573/0x730 fs/ocfs2/refcounttree.c:2312
 ocfs2_remove_btree_range+0x11c0/0x1540 fs/ocfs2/alloc.c:5791
 ocfs2_commit_truncate+0xb64/0x21d0 fs/ocfs2/alloc.c:7373
 ocfs2_truncate_file+0xca2/0x1420 fs/ocfs2/file.c:509
 ocfs2_setattr+0x1520/0x1b40 fs/ocfs2/file.c:1212
 notify_change+0xb33/0xe40 fs/attr.c:552
 do_truncate+0x1a4/0x220 fs/open.c:68
 handle_truncate fs/namei.c:3508 [inline]
 do_open fs/namei.c:3891 [inline]
 path_openat+0x306c/0x3830 fs/namei.c:4046
 do_filp_open+0x1fa/0x410 fs/namei.c:4073
 do_sys_openat2+0x121/0x1c0 fs/open.c:1437
 do_sys_open fs/open.c:1452 [inline]
 __do_sys_creat fs/open.c:1530 [inline]
 __se_sys_creat fs/open.c:1524 [inline]
 __x64_sys_creat+0x8f/0xc0 fs/open.c:1524
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x220 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f16e2f8e969
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:00007f16e3e6b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f16e31b6080 RCX: 00007f16e2f8e969
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 00002000000002c0
RBP: 00007f16e3010ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f16e31b6080 R15: 00007fffc4f5e248
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__ocfs2_decrease_refcount+0x1603/0x1780 fs/ocfs2/refcounttree.c:2242
Code: fe c6 05 96 78 e9 0b 01 90 48 c7 c7 c0 82 ca 8b e8 a2 8c e3 fd 90 0f 0b 90 90 e9 a7 eb ff ff e8 c3 7e bd 07 e8 ee 8b 1f fe 90 <0f> 0b e8 e6 8b 1f fe 90 0f 0b e8 de 8b 1f fe 90 0f 0b e8 d6 8b 1f
RSP: 0018:ffffc9000d686880 EFLAGS: 00010287
RAX: ffffffff83a048c2 RBX: 0000000000000000 RCX: 0000000000100000
RDX: ffffc9000e8cb000 RSI: 00000000000044ab RDI: 00000000000044ac
RBP: ffffc9000d686b40 R08: ffff888000338000 R09: 0000000000000006
R10: 00000000fffffffc R11: 0000000000000002 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffc9000d686930 R15: 0000000000000003
FS:  00007f16e3e6b6c0(0000) GS:ffff88808d291000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f16e3183170 CR3: 000000003fbc7000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400