bi_fields_set=0 bi_dir=0 bi_dir_offset=0 bi_subvol=0 bi_parent_subvol=0 bi_nocow=0 invalid fields_start (got 0, min 6 max 13): deleting bcachefs (loop0): flagging btree dirents lost data error reading btree root dirents l=0: btree_node_read_error, fixing bcachefs (loop0): will run btree node scan invalid bkey u64s 11 type alloc_v4 0:24:3 len 0 ver 0: gen 0 oldest_gen 0 data_type journal journal_seq 1 need_discard 1 need_inc_gen 1 dirty_sectors 256 stripe_sectors 0 cached_sectors 0 stripe 0 stripe_redundancy 0 io_time[READ] 1 io_time[WRITE] 1 fragmentation 0 bp_start 8 nonzero snapshot: delete?, fixing bcachefs (loop0): flagging btree alloc lost data error reading btree root alloc l=0: btree_node_read_error, fixing bcachefs (loop0): flagging btree snapshots lost data error reading btree root snapshots l=0: btree_node_read_error, fixing bcachefs (loop0): scan_for_btree_nodes... bch2_scan_for_btree_nodes: nodes found after overwrites: extents l=0 seq=1 journal_seq=5 cookie=c6c25c03258c59c5 POS_MIN-SPOS_MAX ptr: 0:27:0 gen 0 xattrs l=0 seq=1 journal_seq=4 cookie=2285c34bed0abe32 POS_MIN-SPOS_MAX ptr: 0:31:0 gen 0 lru l=0 seq=1 journal_seq=5 cookie=28f61e078e70b95c POS_MIN-SPOS_MAX ptr: 0:28:0 gen 0 deleted_inodes l=0 seq=1 journal_seq=0 cookie=1db8f60c84bb244c POS_MIN-SPOS_MAX ptr: 0:42:0 gen 0 done bcachefs (loop0): check_topology... bcachefs (loop0): btree root dirents unreadable, must recover from scan no nodes found for btree dirents, continuing bcachefs (loop0): btree root snapshots unreadable, must recover from scan no nodes found for btree snapshots, continuing done bcachefs (loop0): accounting_read... done bcachefs (loop0): alloc_read... done bcachefs (loop0): stripes_read... done bcachefs (loop0): snapshots_read... bcachefs (loop0): running explicit recovery pass reconstruct_snapshots (20), currently at snapshots_read (6) done bcachefs (loop0): check_allocations... ------------[ cut here ]------------ kernel BUG at fs/bcachefs/btree_iter.c:631! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted 6.12.0-rc4-syzkaller-00289-gea1fda89f5b2 #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:bch2_btree_path_level_init+0x9d2/0x9f0 fs/bcachefs/btree_iter.c:631 Code: fd 90 0f 0b e8 cf 58 7c fd 90 0f 0b e8 c7 58 7c fd 90 0f 0b e8 bf 58 7c fd 90 0f 0b e8 b7 58 7c fd 90 0f 0b e8 af 58 7c fd 90 <0f> 0b e8 a7 58 7c fd 90 0f 0b e8 9f 58 7c fd 90 0f 0b 66 2e 0f 1f RSP: 0018:ffffc9000d556200 EFLAGS: 00010246 RAX: ffffffff84187fe1 RBX: 0000000000000000 RCX: 0000000000040000 RDX: ffffc9000d281000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: dffffc0000000000 R08: ffffffff8418786b R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff203a066 R12: ffff88804fb21000 R13: 00000000000000ff R14: 0000000000000000 R15: ffff888052400033 FS: 00007ff94a2c36c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005625e214a000 CR3: 000000003ff1e000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btree_path_lock_root fs/bcachefs/btree_iter.c:769 [inline] bch2_btree_path_traverse_one+0x10de/0x2940 fs/bcachefs/btree_iter.c:1170 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:247 [inline] __bch2_btree_iter_peek fs/bcachefs/btree_iter.c:2197 [inline] bch2_btree_iter_peek_upto+0xb58/0x70e0 fs/bcachefs/btree_iter.c:2297 bch2_btree_iter_peek_upto_type fs/bcachefs/btree_iter.h:685 [inline] bch2_gc_btree fs/bcachefs/btree_gc.c:670 [inline] bch2_gc_btrees fs/bcachefs/btree_gc.c:729 [inline] bch2_check_allocations+0x1abe/0x7070 fs/bcachefs/btree_gc.c:1133 bch2_run_recovery_pass+0xf0/0x1e0 fs/bcachefs/recovery_passes.c:185 bch2_run_recovery_passes+0x387/0x870 fs/bcachefs/recovery_passes.c:232 bch2_fs_recovery+0x25cc/0x39c0 fs/bcachefs/recovery.c:862 bch2_fs_start+0x356/0x5b0 fs/bcachefs/super.c:1036 bch2_fs_get_tree+0xd68/0x1710 fs/bcachefs/fs.c:2170 vfs_get_tree+0x90/0x2b0 fs/super.c:1800 do_new_mount+0x2be/0xb40 fs/namespace.c:3507 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034 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: 0033:0x7ff94957feba 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:00007ff94a2c2e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ff94a2c2ef0 RCX: 00007ff94957feba RDX: 00000000200058c0 RSI: 0000000020005900 RDI: 00007ff94a2c2eb0 RBP: 00000000200058c0 R08: 00007ff94a2c2ef0 R09: 0000000001000000 R10: 0000000001000000 R11: 0000000000000246 R12: 0000000020005900 R13: 00007ff94a2c2eb0 R14: 0000000000005948 R15: 0000000020000380 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_btree_path_level_init+0x9d2/0x9f0 fs/bcachefs/btree_iter.c:631 Code: fd 90 0f 0b e8 cf 58 7c fd 90 0f 0b e8 c7 58 7c fd 90 0f 0b e8 bf 58 7c fd 90 0f 0b e8 b7 58 7c fd 90 0f 0b e8 af 58 7c fd 90 <0f> 0b e8 a7 58 7c fd 90 0f 0b e8 9f 58 7c fd 90 0f 0b 66 2e 0f 1f RSP: 0018:ffffc9000d556200 EFLAGS: 00010246 RAX: ffffffff84187fe1 RBX: 0000000000000000 RCX: 0000000000040000 RDX: ffffc9000d281000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: dffffc0000000000 R08: ffffffff8418786b R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff203a066 R12: ffff88804fb21000 R13: 00000000000000ff R14: 0000000000000000 R15: ffff888052400033 FS: 00007ff94a2c36c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005625e214a000 CR3: 000000003ff1e000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400