loop0: detected capacity change from 0 to 2048 loop0: detected capacity change from 0 to 32768 bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=continue,metadata_checksum=none,data_checksum=none,compression=lz4,str_hash=crc32c,journal_flush_disabled,norecovery,nojournal_transaction_names,reconstruct_alloc bcachefs (loop0): recovering from clean shutdown, journal seq 10 bcachefs (loop0): Version upgrade required: Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomplete Doing incompatible version upgrade from 0.24: unwritten_extents to 1.25: extent_flags running recovery passes: check_allocations,check_alloc_info,check_lrus,check_btree_backpointers,check_backpointers_to_extents,check_extents_to_backpointers,check_alloc_to_lru_refs,bucket_gens_init,check_snapshot_trees,check_snapshots,check_subvols,check_subvol_children,delete_dead_snapshots,check_inodes,check_extents,check_indirect_extents,check_dirents,check_xattrs,check_root,check_unreachable_inodes,check_subvolume_structure,check_directory_structure,check_nlinks,set_fs_needs_rebalance bcachefs (loop0): dropping and reconstructing all alloc info bcachefs (loop0): error validating btree node on loop0 at btree xattrs level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 2285c34bed0abe32 written 16 min_key POS_MIN durability: 1 ptr: 0:31:0 gen 0 node offset 0/16: incorrect min_key: got 0:0:458752 should be POS_MIN bcachefs (loop0): running explicit recovery pass check_topology (2), currently at recovery_pass_empty (0) bcachefs (loop0): flagging btree xattrs lost data bcachefs (loop0): running explicit recovery pass scan_for_btree_nodes (1), currently at recovery_pass_empty (0) error reading btree root btree=xattrs level=0: btree_node_read_error, fixing bcachefs (loop0): scan_for_btree_nodes... bcachefs (loop0): btree node scan found 7 nodes after overwrites done bcachefs (loop0): check_topology... bcachefs (loop0): btree root xattrs unreadable, must recover from scan bcachefs (loop0): bch2_get_scanned_nodes(): recovery btree=xattrs level=0 POS_MIN - SPOS_MAX bcachefs (loop0): bch2_get_scanned_nodes(): recovering u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 2285c34bed0abe32 written 16 min_key 0:0:458752 durability: 1 ptr: 0:31:0 gen 0 bcachefs (loop0): bch2_get_scanned_nodes(): recovery btree=xattrs level=0 POS_MIN - 0:0:458751 btree node with incorrect min_key at btree=xattrs level=1: parent: u64s 5 type btree_ptr SPOS_MAX len 0 ver 0 next: u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 2285c34bed0abe32 written 16 min_key 0:0:458752 durability: 1 ptr: 0:31:0 gen 0, fixing bcachefs (loop0): set_node_min(): u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 2285c34bed0abe32 written 16 min_key 0:0:458752 durability: 1 ptr: 0:31:0 gen 0 -> POS_MIN done bcachefs (loop0): accounting_read... done bcachefs (loop0): alloc_read... done bcachefs (loop0): snapshots_read... done bcachefs (loop0): Fixed errors, running fsck a second time to verify fs is clean bcachefs (loop0): done starting filesystem bcachefs (loop0): btree_path_down(): fatal error node not found at pos 4098:6938188414672228844:U32_MAX within parent node u64s 5 type btree_ptr SPOS_MAX len 0 ver 0 bcachefs (loop0): fatal error - emergency read only bcachefs (loop0): btree_path_down(): fatal error node not found at pos 536870912:4645534210120580903:U32_MAX within parent node u64s 5 type btree_ptr SPOS_MAX len 0 ver 0 bcachefs (loop0): btree_path_down(): fatal error node not found at pos 536870912:4762709891319000742:U32_MAX within parent node u64s 5 type btree_ptr SPOS_MAX len 0 ver 0 bcachefs (loop0): btree_path_down(): fatal error node not found at pos 536870912:4645534210120580903:U32_MAX within parent node u64s 5 type btree_ptr SPOS_MAX len 0 ver 0 bcachefs (loop0): btree_path_down(): fatal error node not found at pos 536870913:5159715431275259989:U32_MAX within parent node u64s 5 type btree_ptr SPOS_MAX len 0 ver 0 bcachefs (loop0): pointer to nonexistent device 237 ------------[ cut here ]------------ unhandled error case in bch2_bkey_pick_read_device WARNING: CPU: 0 PID: 5326 at fs/bcachefs/extents.c:230 bch2_bkey_pick_read_device+0x17a5/0x1a00 fs/bcachefs/extents.c:230 Modules linked in: CPU: 0 UID: 0 PID: 5326 Comm: syz.0.0 Not tainted 6.14.0-syzkaller-09352-g0c86b42439b6 #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_bkey_pick_read_device+0x17a5/0x1a00 fs/bcachefs/extents.c:230 Code: 91 2c 57 fd e9 d0 fd ff ff e8 87 2c 57 fd c6 05 0a bd db 0b 01 90 48 c7 c7 e0 af 93 8c 48 c7 c6 b4 8b 59 8e e8 3c 3d 16 fd 90 <0f> 0b 90 90 e9 bc fe ff ff e8 5d 2c 57 fd e9 6e ff ff ff 89 d9 80 RSP: 0018:ffffc9000d46ebc0 EFLAGS: 00010246 RAX: 2b0afa7ce8b44000 RBX: 0000000000000000 RCX: 0000000000100000 RDX: ffffc9000e27a000 RSI: 00000000000015fe RDI: 00000000000015ff RBP: ffffc9000d46edf0 R08: ffffffff8182adb2 R09: fffffbfff1d7a73c R10: dffffc0000000000 R11: fffffbfff1d7a73c R12: dffffc0000000000 R13: 1ffff92001a8dda0 R14: 0000000000000000 R15: 0000000000000000 FS: 00007fb6395b26c0(0000) GS:ffff88808c5dc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5d1ab4b440 CR3: 0000000034284000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __bch2_read_extent+0x3ab/0x4400 fs/bcachefs/io_read.c:962 __bch2_read+0x167e/0x2720 fs/bcachefs/io_read.c:1322 bch2_read fs/bcachefs/io_read.h:154 [inline] bch2_direct_IO_read fs/bcachefs/fs-io-direct.c:171 [inline] bch2_read_iter+0xbd3/0x14b0 fs/bcachefs/fs-io-direct.c:214 copy_splice_read+0x63f/0xb50 fs/splice.c:363 do_splice_read fs/splice.c:978 [inline] splice_direct_to_actor+0x4f0/0xc90 fs/splice.c:1083 do_splice_direct_actor fs/splice.c:1201 [inline] do_splice_direct+0x281/0x3d0 fs/splice.c:1227 do_sendfile+0x582/0x8c0 fs/read_write.c:1368 __do_sys_sendfile64 fs/read_write.c:1429 [inline] __se_sys_sendfile64+0x17e/0x1e0 fs/read_write.c:1415 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: 0033:0x7fb63878d169 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:00007fb6395b2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fb6389a5fa0 RCX: 00007fb63878d169 RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000007 RBP: 00007fb63880e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 000000007a680000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb6389a5fa0 R15: 00007ffd8e62d6b8