bucket 0:21 gen 0 has wrong data_type: got free, should be sb, fixing bucket 0:21 gen 0 data type sb has wrong dirty_sectors: got 0, should be 256, fixing bucket 0:22 gen 0 has wrong data_type: got free, should be sb, fixing bucket 0:22 gen 0 data type sb has wrong dirty_sectors: got 0, should be 256, fixing bucket 0:23 gen 0 has wrong data_type: got free, should be sb, fixing bucket 0:23 gen 0 data type sb has wrong dirty_sectors: got 0, should be 256, fixing bucket 0:24 gen 0 has wrong data_type: got free, should be journal, fixing bucket 0:24 gen 0 data type journal has wrong dirty_sectors: got 0, should be 256, fixing bucket 0:26 gen 0 has wrong data_type: got free, should be btree, fixing bucket 0:26 gen 0 data type btree has wrong dirty_sectors: got 0, should be 32, fixing bucket 0:27 gen 0 data type btree has wrong dirty_sectors: got 256, should be 32, fixing bucket 0:28 gen 0 data type btree has wrong dirty_sectors: got 256, should be 32, fixing bucket 0:29 gen 0 has wrong data_type: got free, should be btree, fixing bucket 0:29 gen 0 data type btree has wrong dirty_sectors: got 0, should be 32, fixing bucket 0:31 gen 0 data type btree has wrong dirty_sectors: got 256, should be 32, fixing bucket 0:32 gen 0 has wrong data_type: got sb, should be btree, fixing bucket 0:32 gen 0 data type btree has wrong dirty_sectors: got 256, should be 32, fixing bucket 0:35 gen 0 has wrong data_type: got free, should be btree, fixing bucket 0:35 gen 0 data type btree has wrong dirty_sectors: got 0, should be 32, fixing bucket 0:37 gen 0 data type btree has wrong dirty_sectors: got 256, should be 32, fixing bucket 0:38 gen 0 has wrong data_type: got free, should be btree, fixing bucket 0:38 gen 0 data type btree has wrong dirty_sectors: got 0, should be 32, fixing bucket 0:41 gen 0 has wrong data_type: got free, should be btree, fixing bucket 0:41 gen 0 data type btree has wrong dirty_sectors: got 0, should be 32, fixing bucket 0:42 gen 0 data type btree has wrong dirty_sectors: got 256, should be 32, fixing bucket 0:120 gen 0 has wrong data_type: got free, should be sb, fixing bucket 0:120 gen 0 data type sb has wrong dirty_sectors: got 0, should be 256, fixing bucket 0:121 gen 0 has wrong data_type: got free, should be sb, fixing bucket 0:121 gen 0 data type sb has wrong dirty_sectors: got 0, should be 256, fixing bucket 0:122 gen 0 has wrong data_type: got free, should be sb, fixing bucket 0:122 gen 0 data type sb has wrong dirty_sectors: got 0, should be 256, fixing bucket 0:123 gen 0 has wrong data_type: got free, should be sb, fixing bucket 0:123 gen 0 data type sb has wrong dirty_sectors: got 0, should be 256, fixing bucket 0:124 gen 0 has wrong data_type: got free, should be sb, fixing bucket 0:124 gen 0 data type sb has wrong dirty_sectors: got 0, should be 256, fixing bucket 0:125 gen 0 has wrong data_type: got free, should be sb, fixing bucket 0:125 gen 0 data type sb has wrong dirty_sectors: got 0, should be 256, fixing bucket 0:126 gen 0 has wrong data_type: got free, should be sb, fixing bucket 0:126 gen 0 data type sb has wrong dirty_sectors: got 0, should be 256, fixing bucket 0:127 gen 0 has wrong data_type: got free, should be sb, fixing bucket 0:127 gen 0 data type sb has wrong dirty_sectors: got 0, should be 256, fixing done bcachefs (loop0): going read-write bcachefs (loop0): journal_replay... done bcachefs (loop0): check_alloc_info... done bcachefs (loop0): check_lrus... done bcachefs (loop0): check_btree_backpointers... done bcachefs (loop0): check_backpointers_to_extents... done bcachefs (loop0): check_extents_to_backpointers... ------------[ cut here ]------------ kernel BUG at fs/bcachefs/backpointers.c:841! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted 6.13.0-syzkaller-00603-g3d3a9c8b89d4 #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:data_type_to_alloc_counter fs/bcachefs/backpointers.c:841 [inline] RIP: 0010:check_bucket_backpointer_mismatch fs/bcachefs/backpointers.c:892 [inline] RIP: 0010:bch2_check_extents_to_backpointers+0x7320/0x7360 fs/bcachefs/backpointers.c:1087 Code: fd 90 0f 0b e8 d1 3a 89 fd 90 0f 0b e8 c9 3a 89 fd 90 0f 0b e8 c1 3a 89 fd 90 0f 0b e8 b9 3a 89 fd 90 0f 0b e8 b1 3a 89 fd 90 <0f> 0b e8 a9 3a 89 fd 90 0f 0b e8 a1 3a 89 fd 90 0f 0b e8 99 3a 89 RSP: 0018:ffffc9000d26e480 EFLAGS: 00010246 RAX: ffffffff84164a4f RBX: 000000000000000e RCX: 0000000000100000 RDX: ffffc9000f19a000 RSI: 00000000000fffff RDI: 0000000000100000 RBP: ffffc9000d26f428 R08: 0000000000000001 R09: ffffffff8415ef86 R10: 0000000000000004 R11: ffff88801f172440 R12: ffffc9000d26f0e0 R13: ffffc9000d26f2f0 R14: ffff88805506435a R15: 0000000000000100 FS: 00007fbcef7756c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005641596d8008 CR3: 0000000040e90000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bch2_run_recovery_pass+0xf0/0x1e0 fs/bcachefs/recovery_passes.c:226 bch2_run_recovery_passes+0x2ad/0xa90 fs/bcachefs/recovery_passes.c:291 bch2_fs_recovery+0x265a/0x3de0 fs/bcachefs/recovery.c:937 bch2_fs_start+0x37c/0x610 fs/bcachefs/super.c:1030 bch2_fs_get_tree+0xd8d/0x1740 fs/bcachefs/fs.c:2203 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 do_new_mount+0x2be/0xb40 fs/namespace.c:3560 do_mount fs/namespace.c:3900 [inline] __do_sys_mount fs/namespace.c:4111 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088 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: 0033:0x7fbcee9874ca Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 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:00007fbcef774e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fbcef774ef0 RCX: 00007fbcee9874ca RDX: 00000000200000c0 RSI: 0000000020000180 RDI: 00007fbcef774eb0 RBP: 00000000200000c0 R08: 00007fbcef774ef0 R09: 0000000000000010 R10: 0000000000000010 R11: 0000000000000246 R12: 0000000020000180 R13: 00007fbcef774eb0 R14: 000000000000595c R15: 00000000200a3840 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:data_type_to_alloc_counter fs/bcachefs/backpointers.c:841 [inline] RIP: 0010:check_bucket_backpointer_mismatch fs/bcachefs/backpointers.c:892 [inline] RIP: 0010:bch2_check_extents_to_backpointers+0x7320/0x7360 fs/bcachefs/backpointers.c:1087 Code: fd 90 0f 0b e8 d1 3a 89 fd 90 0f 0b e8 c9 3a 89 fd 90 0f 0b e8 c1 3a 89 fd 90 0f 0b e8 b9 3a 89 fd 90 0f 0b e8 b1 3a 89 fd 90 <0f> 0b e8 a9 3a 89 fd 90 0f 0b e8 a1 3a 89 fd 90 0f 0b e8 99 3a 89 RSP: 0018:ffffc9000d26e480 EFLAGS: 00010246 RAX: ffffffff84164a4f RBX: 000000000000000e RCX: 0000000000100000 RDX: ffffc9000f19a000 RSI: 00000000000fffff RDI: 0000000000100000 RBP: ffffc9000d26f428 R08: 0000000000000001 R09: ffffffff8415ef86 R10: 0000000000000004 R11: ffff88801f172440 R12: ffffc9000d26f0e0 R13: ffffc9000d26f2f0 R14: ffff88805506435a R15: 0000000000000100 FS: 00007fbcef7756c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005641596d8008 CR3: 0000000040e90000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400