bcachefs (loop0): check_snapshots... done bcachefs (loop0): check_subvols... bcachefs (loop0): subvolume 1 is not set as snapshot but is not master subvolume, fixing done bcachefs (loop0): check_inodes... bcachefs (loop0): inode points to missing dirent inum: 4099:4294967295 mode=100755 flags=(15300000) journal_seq=5 hash_seed=ab878b4c5ab7c89e hash_type=siphash bi_size=1050 bi_sectors=8 bi_version=0 bi_atime=1997793410 bi_ctime=1997793410 bi_mtime=1997793410 bi_otime=1997793410 bi_uid=0 bi_gid=0 bi_nlink=0 bi_generation=0 bi_dev=0 bi_data_checksum=0 bi_compression=0 bi_project=0 bi_background_compression=0 bi_data_replicas=0 bi_promote_target=0 bi_foreground_target=0 bi_background_target=0 bi_erasure_code=0 bi_fields_set=0 bi_dir=4098 bi_dir_offset=2566586984702133180 bi_subvol=0 bi_parent_subvol=0 bi_nocow=0 bi_depth=0 bi_inodes_32bit=0, fixing done bcachefs (loop0): check_dirents... bcachefs (loop0): dirent points to missing inode: u64s 7 type dirent 4096:5682031293254759865:U32_MAX len 0 ver 0: file0 -> 4098 type dir, fixing bcachefs (loop0): hash table key at wrong offset: btree dirents inode 4096 offset 6229884513039707068, hashed to 8684147530991222154 u64s 7 type dirent 4096:6229884513039707068:U32_MAX len 0 ver 0: Ķile2 -> 2165878814 -> 1006764033 type subvol, fixing bcachefs (loop0): hash table key at wrong offset: btree dirents inode 4096 offset 6229884513039707068, hashed to 8684147530991222154 u64s 7 type dirent 4096:6229884513039707068:U32_MAX len 0 ver 0: Ķile2 -> 2165878814 -> 1006764033 type subvol, fixing ------------[ cut here ]------------ kernel BUG at fs/bcachefs/fsck.c:954! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5326 Comm: syz.0.0 Not tainted 6.15.0-rc2-syzkaller-00042-g1a1d569a75f3 #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:bch2_fsck_update_backpointers+0x4ed/0x4f0 fs/bcachefs/fsck.c:954 Code: e9 2b fc ff ff 89 d9 80 e1 07 38 c1 0f 8c 62 fc ff ff 48 89 df e8 e3 7b b7 fd e9 55 fc ff ff e8 f9 ae ba 07 e8 24 43 4d fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e RSP: 0018:ffffc9000d616460 EFLAGS: 00010246 RAX: ffffffff8476120c RBX: 0000000000000010 RCX: 0000000000100000 RDX: ffffc9000e3f2000 RSI: 00000000000fffff RDI: 0000000000100000 RBP: ffffc9000d616600 R08: ffffffff84760e69 R09: 0000000000000000 R10: ffffc9000d616530 R11: fffff52001ac2caf R12: ffffc9000d617290 R13: dffffc0000000000 R14: ffff888052809900 R15: ffff88805290c000 FS: 00007fdecc5ef6c0(0000) GS:ffff88808c593000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055b875bee008 CR3: 0000000043c3e000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __bch2_str_hash_check_key+0x202c/0x3b50 fs/bcachefs/str_hash.c:257 bch2_str_hash_check_key fs/bcachefs/str_hash.h:415 [inline] check_dirent fs/bcachefs/fsck.c:2135 [inline] bch2_check_dirents+0x2d45/0x3b90 fs/bcachefs/fsck.c:2230 bch2_run_recovery_pass+0xf0/0x1e0 fs/bcachefs/recovery_passes.c:226 bch2_run_recovery_passes+0x2ad/0xa90 fs/bcachefs/recovery_passes.c:285 bch2_fs_recovery+0x292a/0x3e20 fs/bcachefs/recovery.c:936 bch2_fs_start+0x310/0x620 fs/bcachefs/super.c:1059 bch2_fs_get_tree+0x113e/0x18f0 fs/bcachefs/fs.c:2253 vfs_get_tree+0x90/0x2b0 fs/super.c:1759 do_new_mount+0x2cf/0xb70 fs/namespace.c:3881 do_mount fs/namespace.c:4221 [inline] __do_sys_mount fs/namespace.c:4432 [inline] __se_sys_mount+0x38c/0x400 fs/namespace.c:4409 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdecb78f90a 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:00007fdecc5eee68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fdecc5eeef0 RCX: 00007fdecb78f90a RDX: 000020000000f640 RSI: 0000200000000140 RDI: 00007fdecc5eeeb0 RBP: 000020000000f640 R08: 00007fdecc5eeef0 R09: 0000000000804008 R10: 0000000000804008 R11: 0000000000000246 R12: 0000200000000140 R13: 00007fdecc5eeeb0 R14: 000000000000f620 R15: 00002000000000c0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_fsck_update_backpointers+0x4ed/0x4f0 fs/bcachefs/fsck.c:954 Code: e9 2b fc ff ff 89 d9 80 e1 07 38 c1 0f 8c 62 fc ff ff 48 89 df e8 e3 7b b7 fd e9 55 fc ff ff e8 f9 ae ba 07 e8 24 43 4d fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e RSP: 0018:ffffc9000d616460 EFLAGS: 00010246 RAX: ffffffff8476120c RBX: 0000000000000010 RCX: 0000000000100000 RDX: ffffc9000e3f2000 RSI: 00000000000fffff RDI: 0000000000100000 RBP: ffffc9000d616600 R08: ffffffff84760e69 R09: 0000000000000000 R10: ffffc9000d616530 R11: fffff52001ac2caf R12: ffffc9000d617290 R13: dffffc0000000000 R14: ffff888052809900 R15: ffff88805290c000 FS: 00007fdecc5ef6c0(0000) GS:ffff88808c593000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055b875bee008 CR3: 0000000043c3e000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400