------------[ cut here ]------------ kernel BUG at fs/ocfs2/suballoc.c:2542! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5336 Comm: syz.0.0 Not tainted 6.14.0-rc2-syzkaller #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+0x1183/0x1470 fs/ocfs2/suballoc.c:2542 Code: f9 fb ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c fc fb ff ff 48 89 fb e8 7b 94 67 fe 48 89 df e9 ec fb ff ff e8 8e fa 00 fe 90 <0f> 0b e8 86 fa 00 fe 90 0f 0b f3 0f 1e fa 65 44 8b 3d 63 81 45 7c RSP: 0018:ffffc9000d46e760 EFLAGS: 00010283 RAX: ffffffff83be5512 RBX: 00000000ffffffff RCX: 0000000000100000 RDX: ffffc9000f3ac000 RSI: 000000000002eba3 RDI: 000000000002eba4 RBP: ffffc9000d46e908 R08: ffffffff83be448e R09: 0000000000000002 R10: dffffc0000000000 R11: fffffbfff2036b8f R12: 0000000000000002 R13: ffff8880448f20e8 R14: ffff8880230a4e00 R15: dffffc0000000000 FS: 00007fb9b19f56c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffe232c1b8 CR3: 0000000043c3c000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: _ocfs2_free_clusters+0x5ef/0xac0 fs/ocfs2/suballoc.c:2646 ocfs2_replay_truncate_records fs/ocfs2/alloc.c:5971 [inline] __ocfs2_flush_truncate_log+0x760/0x1240 fs/ocfs2/alloc.c:6054 ocfs2_remove_btree_range+0x7ef/0x1860 fs/ocfs2/alloc.c:5745 ocfs2_commit_truncate+0xcca/0x2550 fs/ocfs2/alloc.c:7364 ocfs2_truncate_file+0xd21/0x1560 fs/ocfs2/file.c:509 ocfs2_setattr+0x1890/0x1ef0 fs/ocfs2/file.c:1212 notify_change+0xbca/0xe90 fs/attr.c:552 do_truncate+0x220/0x310 fs/open.c:65 handle_truncate fs/namei.c:3451 [inline] do_open fs/namei.c:3834 [inline] path_openat+0x2e1b/0x3590 fs/namei.c:3989 do_filp_open+0x27f/0x4e0 fs/namei.c:4016 do_sys_openat2+0x13e/0x1d0 fs/open.c:1428 do_sys_open fs/open.c:1443 [inline] __do_sys_open fs/open.c:1451 [inline] __se_sys_open fs/open.c:1447 [inline] __x64_sys_open+0x225/0x270 fs/open.c:1447 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb9b558cde9 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:00007fb9b19f5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007fb9b57a6160 RCX: 00007fb9b558cde9 RDX: 0000000000000000 RSI: 000000000000a37e RDI: 0000400000000180 RBP: 00007fb9b560e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb9b57a6160 R15: 00007ffe0e689878 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:_ocfs2_free_suballoc_bits+0x1183/0x1470 fs/ocfs2/suballoc.c:2542 Code: f9 fb ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c fc fb ff ff 48 89 fb e8 7b 94 67 fe 48 89 df e9 ec fb ff ff e8 8e fa 00 fe 90 <0f> 0b e8 86 fa 00 fe 90 0f 0b f3 0f 1e fa 65 44 8b 3d 63 81 45 7c RSP: 0018:ffffc9000d46e760 EFLAGS: 00010283 RAX: ffffffff83be5512 RBX: 00000000ffffffff RCX: 0000000000100000 RDX: ffffc9000f3ac000 RSI: 000000000002eba3 RDI: 000000000002eba4 RBP: ffffc9000d46e908 R08: ffffffff83be448e R09: 0000000000000002 R10: dffffc0000000000 R11: fffffbfff2036b8f R12: 0000000000000002 R13: ffff8880448f20e8 R14: ffff8880230a4e00 R15: dffffc0000000000 FS: 00007fb9b19f56c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffe232c1b8 CR3: 0000000043c3c000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400