bcachefs (loop5): going read-write bcachefs (loop5): journal_replay... done bcachefs (loop5): check_extents_to_backpointers... ------------[ cut here ]------------ kernel BUG at fs/bcachefs/backpointers.c:841! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 UID: 0 PID: 8113 Comm: syz.5.271 Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 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 51 0a 8a fd 90 0f 0b e8 49 0a 8a fd 90 0f 0b e8 41 0a 8a fd 90 0f 0b e8 39 0a 8a fd 90 0f 0b e8 31 0a 8a fd 90 <0f> 0b e8 29 0a 8a fd 90 0f 0b e8 21 0a 8a fd 90 0f 0b e8 19 0a 8a RSP: 0018:ffffc9000f9c6480 EFLAGS: 00010246 RAX: ffffffff8435538f RBX: 0000000000000008 RCX: 0000000000080000 RDX: ffffc9001c800000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: ffffc9000f9c7428 R08: 0000000000000001 R09: ffffffff8434f8c6 R10: 0000000000000004 R11: ffff888061201e00 R12: ffffc9000f9c70e0 R13: ffffc9000f9c72f0 R14: ffff88806500027a R15: 0000000000000100 FS: 00007f8cfb8856c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdd96c7a000 CR3: 0000000061ad2000 CR4: 00000000003526f0 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:936 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: 0033:0x7f8cfa98e58a 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:00007f8cfb884e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f8cfb884ef0 RCX: 00007f8cfa98e58a RDX: 00002000000058c0 RSI: 0000200000000000 RDI: 00007f8cfb884eb0 RBP: 00002000000058c0 R08: 00007f8cfb884ef0 R09: 0000000000000401 R10: 0000000000000401 R11: 0000000000000246 R12: 0000200000000000 R13: 00007f8cfb884eb0 R14: 000000000000593c R15: 0000200000000040 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 51 0a 8a fd 90 0f 0b e8 49 0a 8a fd 90 0f 0b e8 41 0a 8a fd 90 0f 0b e8 39 0a 8a fd 90 0f 0b e8 31 0a 8a fd 90 <0f> 0b e8 29 0a 8a fd 90 0f 0b e8 21 0a 8a fd 90 0f 0b e8 19 0a 8a RSP: 0018:ffffc9000f9c6480 EFLAGS: 00010246 RAX: ffffffff8435538f RBX: 0000000000000008 RCX: 0000000000080000 RDX: ffffc9001c800000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: ffffc9000f9c7428 R08: 0000000000000001 R09: ffffffff8434f8c6 R10: 0000000000000004 R11: ffff888061201e00 R12: ffffc9000f9c70e0 R13: ffffc9000f9c72f0 R14: ffff88806500027a R15: 0000000000000100 FS: 00007f8cfb8856c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f887b6d7d60 CR3: 0000000061ad2000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400