loop0: detected capacity change from 0 to 32768 bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,nojournal_transaction_names 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): accounting_read... done bcachefs (loop0): alloc_read... ------------[ cut here ]------------ kernel BUG at fs/bcachefs/btree_iter.c:619! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted 6.15.0-rc2-syzkaller-00087-gcfb2e2c57aef #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_btree_path_level_init+0x9dc/0xa00 fs/bcachefs/btree_iter.c:619 Code: e9 fa ff ff e8 d5 c2 6b fd 90 0f 0b e8 cd c2 6b fd 90 0f 0b e8 c5 c2 6b fd 90 0f 0b e8 bd c2 6b fd 90 0f 0b e8 b5 c2 6b fd 90 <0f> 0b e8 ad c2 6b fd 90 0f 0b e8 a5 c2 6b fd 90 0f 0b e8 9d c2 6b RSP: 0018:ffffc9000d30e840 EFLAGS: 00010287 RAX: ffffffff8457927b RBX: 0000000000000000 RCX: 0000000000100000 RDX: ffffc9000defa000 RSI: 000000000005a464 RDI: 000000000005a465 RBP: dffffc0000000000 R08: ffffffff84578abc R09: 0000000000000000 R10: dffffc0000000000 R11: fffff52001a61cfc R12: ffff8880536d8000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880565a0033 FS: 00007f6cff59f6c0(0000) GS:ffff88808c593000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005613bc2aea48 CR3: 00000000407c2000 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:773 [inline] bch2_btree_path_traverse_one+0x10af/0x2970 fs/bcachefs/btree_iter.c:1189 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:248 [inline] __bch2_btree_iter_peek fs/bcachefs/btree_iter.c:2243 [inline] bch2_btree_iter_peek_max+0xb9b/0x61a0 fs/bcachefs/btree_iter.c:2347 bch2_btree_iter_peek_max_type fs/bcachefs/btree_iter.h:702 [inline] bch2_alloc_read+0x1698/0x2da0 fs/bcachefs/alloc_background.c:626 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: 0033:0x7f6cfe78f90a 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:00007f6cff59ee68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f6cff59eef0 RCX: 00007f6cfe78f90a RDX: 0000200000000280 RSI: 0000200000005900 RDI: 00007f6cff59eeb0 RBP: 0000200000000280 R08: 00007f6cff59eef0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000005900 R13: 00007f6cff59eeb0 R14: 00000000000058d3 R15: 00002000000002c0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_btree_path_level_init+0x9dc/0xa00 fs/bcachefs/btree_iter.c:619 Code: e9 fa ff ff e8 d5 c2 6b fd 90 0f 0b e8 cd c2 6b fd 90 0f 0b e8 c5 c2 6b fd 90 0f 0b e8 bd c2 6b fd 90 0f 0b e8 b5 c2 6b fd 90 <0f> 0b e8 ad c2 6b fd 90 0f 0b e8 a5 c2 6b fd 90 0f 0b e8 9d c2 6b RSP: 0018:ffffc9000d30e840 EFLAGS: 00010287 RAX: ffffffff8457927b RBX: 0000000000000000 RCX: 0000000000100000 RDX: ffffc9000defa000 RSI: 000000000005a464 RDI: 000000000005a465 RBP: dffffc0000000000 R08: ffffffff84578abc R09: 0000000000000000 R10: dffffc0000000000 R11: fffff52001a61cfc R12: ffff8880536d8000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880565a0033 FS: 00007f6cff59f6c0(0000) GS:ffff88808c593000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e377cf30c8 CR3: 00000000407c2000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400