------------[ cut here ]------------ kernel BUG at fs/ocfs2/suballoc.c:2543! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5219 Comm: syz-executor Not tainted 6.12.0-rc2-syzkaller-00205-g1d227fcc7222 #0 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_free_suballoc_bits+0x11aa/0x14a0 fs/ocfs2/suballoc.c:2543 Code: e1 80 e1 07 80 c1 03 38 c1 0f 8c 92 fb ff ff 4c 89 e7 e8 79 4a 68 fe e9 85 fb ff ff e8 2f 99 fe fd 90 0f 0b e8 27 99 fe fd 90 <0f> 0b f3 0f 1e fa 65 8b 1d 95 89 6d 7c bf 07 00 00 00 89 de e8 4d RSP: 0018:ffffc900017af700 EFLAGS: 00010293 RAX: ffffffff83964e29 RBX: 0000000000000e00 RCX: ffff8880008d4880 RDX: 0000000000000000 RSI: 0000000000000e00 RDI: 00000000ffff9010 RBP: ffffc900017af8a8 R08: ffffffff83963dec R09: 00000000ffff8880 R10: dffffc0000000000 R11: fffffbfff2039e56 R12: 00000000ffff9010 R13: dffffc0000000000 R14: ffff888042acde00 R15: 0000000000000e00 FS: 0000555594dcc500(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f75d60f4440 CR3: 0000000012fcc000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: _ocfs2_free_clusters+0x5ff/0xad0 fs/ocfs2/suballoc.c:2646 ocfs2_replay_truncate_records fs/ocfs2/alloc.c:5971 [inline] __ocfs2_flush_truncate_log+0x760/0x1250 fs/ocfs2/alloc.c:6054 ocfs2_flush_truncate_log+0x4f/0x70 fs/ocfs2/alloc.c:6076 ocfs2_sync_fs+0x125/0x390 fs/ocfs2/super.c:402 sync_filesystem+0x1c8/0x230 fs/sync.c:66 generic_shutdown_super+0x72/0x2d0 fs/super.c:621 kill_block_super+0x44/0x90 fs/super.c:1696 deactivate_locked_super+0xc4/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373 task_work_run+0x24f/0x310 kernel/task_work.c:228 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fadd597f327 Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffc8f101208 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fadd597f327 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc8f1012c0 RBP: 00007ffc8f1012c0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc8f102340 R13: 00007fadd59f0134 R14: 000000000002828f R15: 00007ffc8f102380 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:_ocfs2_free_suballoc_bits+0x11aa/0x14a0 fs/ocfs2/suballoc.c:2543 Code: e1 80 e1 07 80 c1 03 38 c1 0f 8c 92 fb ff ff 4c 89 e7 e8 79 4a 68 fe e9 85 fb ff ff e8 2f 99 fe fd 90 0f 0b e8 27 99 fe fd 90 <0f> 0b f3 0f 1e fa 65 8b 1d 95 89 6d 7c bf 07 00 00 00 89 de e8 4d RSP: 0018:ffffc900017af700 EFLAGS: 00010293 RAX: ffffffff83964e29 RBX: 0000000000000e00 RCX: ffff8880008d4880 RDX: 0000000000000000 RSI: 0000000000000e00 RDI: 00000000ffff9010 RBP: ffffc900017af8a8 R08: ffffffff83963dec R09: 00000000ffff8880 R10: dffffc0000000000 R11: fffffbfff2039e56 R12: 00000000ffff9010 R13: dffffc0000000000 R14: ffff888042acde00 R15: 0000000000000e00 FS: 0000555594dcc500(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f573f5ff000 CR3: 0000000012fcc000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400