loop0: detected capacity change from 0 to 32768 bcachefs (/dev/loop0): error reading default superblock: checksum error, type none: got should be bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=ro,errors=continue,metadata_checksum=none,data_checksum=none,compression=lz4,nojournal_transaction_names,read_only bcachefs (loop0): recovering from clean shutdown, journal seq 10 bcachefs (loop0): superblock requires following recovery passes to be run: check_inodes,check_extents,check_dirents bcachefs (loop0): Doing compatible version upgrade from 1.7: mi_btree_bitmap to 1.20: directory_size running recovery passes: check_allocations,check_extents_to_backpointers bcachefs (loop0): error validating btree node on loop0 at btree inodes level 0/0 u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 7589ab5e0c11cc7a written 24 min_key POS_MIN durability: 1 ptr: 0:38:0 gen 0 node offset 0/24: incorrect min_key: got 0:0:U32_MAX should be POS_MIN bcachefs (loop0): running explicit recovery pass check_topology (2), currently at recovery_pass_empty (0) bcachefs (loop0): flagging btree inodes lost data bcachefs (loop0): running explicit recovery pass check_lrus (14), currently at recovery_pass_empty (0) bcachefs (loop0): running explicit recovery pass check_backpointers_to_extents (16), currently at recovery_pass_empty (0) bcachefs (loop0): running explicit recovery pass scan_for_btree_nodes (1), currently at recovery_pass_empty (0) error reading btree root btree=inodes level=0: btree_node_read_error, fixing ------------[ cut here ]------------ kernel BUG at fs/bcachefs/btree_io.c:1783! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5317 Comm: syz.0.0 Not tainted 6.14.0-rc1-syzkaller-00026-gd009de7d5428 #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_root_read fs/bcachefs/btree_io.c:1783 [inline] RIP: 0010:bch2_btree_root_read+0x78d/0x7a0 fs/bcachefs/btree_io.c:1811 Code: ff 44 89 f1 80 e1 07 38 c1 0f 8c 98 fa ff ff 4c 89 f7 e8 56 a7 e6 fd e9 8b fa ff ff e8 6c 0f 80 fd 90 0f 0b e8 64 0f 80 fd 90 <0f> 0b e8 9c 69 b6 07 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 RSP: 0018:ffffc9000d4af280 EFLAGS: 00010287 RAX: ffffffff843f4ebc RBX: 00000000ffffffef RCX: 0000000000100000 RDX: ffffc9000e34a000 RSI: 000000000003c2d0 RDI: 000000000003c2d1 RBP: ffffc9000d4af3b0 R08: ffffffff843f4d01 R09: 1ffff92001a95e38 R10: dffffc0000000000 R11: fffff52001a95e39 R12: ffff888053631000 R13: 000000000001f001 R14: ffff888053501a98 R15: 0000000000000000 FS: 00007fbe8e2ac6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055dc6ba264e8 CR3: 00000000533ae000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: read_btree_roots+0x3d3/0xa70 fs/bcachefs/recovery.c:581 bch2_fs_recovery+0x260f/0x3de0 fs/bcachefs/recovery.c:928 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: 0033:0x7fbe8d38e54a 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:00007fbe8e2abe68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fbe8e2abef0 RCX: 00007fbe8d38e54a RDX: 0000000020000000 RSI: 0000000020000040 RDI: 00007fbe8e2abeb0 RBP: 0000000020000000 R08: 00007fbe8e2abef0 R09: 0000000001000001 R10: 0000000001000001 R11: 0000000000000246 R12: 0000000020000040 R13: 00007fbe8e2abeb0 R14: 000000000000595c R15: 0000000020000140 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__bch2_btree_root_read fs/bcachefs/btree_io.c:1783 [inline] RIP: 0010:bch2_btree_root_read+0x78d/0x7a0 fs/bcachefs/btree_io.c:1811 Code: ff 44 89 f1 80 e1 07 38 c1 0f 8c 98 fa ff ff 4c 89 f7 e8 56 a7 e6 fd e9 8b fa ff ff e8 6c 0f 80 fd 90 0f 0b e8 64 0f 80 fd 90 <0f> 0b e8 9c 69 b6 07 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 RSP: 0018:ffffc9000d4af280 EFLAGS: 00010287 RAX: ffffffff843f4ebc RBX: 00000000ffffffef RCX: 0000000000100000 RDX: ffffc9000e34a000 RSI: 000000000003c2d0 RDI: 000000000003c2d1 RBP: ffffc9000d4af3b0 R08: ffffffff843f4d01 R09: 1ffff92001a95e38 R10: dffffc0000000000 R11: fffff52001a95e39 R12: ffff888053631000 R13: 000000000001f001 R14: ffff888053501a98 R15: 0000000000000000 FS: 00007fbe8e2ac6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000561945de5038 CR3: 00000000533ae000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400