bcachefs (loop0): check_backpointers_to_extents... done bcachefs (loop0): check_extents_to_backpointers... bcachefs (loop0): scanning for missing backpointers in 5/128 buckets done bcachefs (loop0): check_alloc_to_lru_refs... bcachefs (loop0): missing fragmentation lru entry u64s 13 type alloc_v4 0:34:0 len 0 ver 0: gen 0 oldest_gen 0 data_type user journal_seq_nonempty 5 journal_seq_empty 134217728 need_discard 1 need_inc_gen 1 dirty_sectors 8 stripe_sectors 0 cached_sectors 0 stripe 0 stripe_redundancy 0 io_time[READ] 1 io_time[WRITE] 512 fragmentation 67108864 bp_start 8 , fixing done bcachefs (loop0): bucket_gens_init... done bcachefs (loop0): check_snapshot_trees... done bcachefs (loop0): check_snapshots... bcachefs (loop0): snapshot points to missing/incorrect tree: u64s 8 type snapshot 0:4294967295:0 len 0 ver 0: subvol parent 0 children 0 0 subvol 1 tree 0, fixing done bcachefs (loop0): check_subvols... done bcachefs (loop0): check_subvol_children... done bcachefs (loop0): delete_dead_snapshots... done bcachefs (loop0): check_inodes... done bcachefs (loop0): check_extents... done bcachefs (loop0): check_indirect_extents... done bcachefs (loop0): check_dirents... done bcachefs (loop0): check_xattrs... done bcachefs (loop0): check_root... done bcachefs (loop0): check_unreachable_inodes... done bcachefs (loop0): check_subvolume_structure... done bcachefs (loop0): check_directory_structure... done bcachefs (loop0): check_nlinks... bcachefs (loop0): inode 536870914 type reg has wrong i_nlink (2780562353, should be 1), fixing done bcachefs (loop0): check_rebalance_work... done bcachefs (loop0): resume_logged_ops... done bcachefs (loop0): delete_dead_inodes... done bcachefs (loop0): set_fs_needs_rebalance... done bcachefs (loop0): done starting filesystem ------------[ cut here ]------------ kernel BUG at fs/bcachefs/fs.c:1323! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5360 Comm: syz.0.0 Not tainted syzkaller #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_fill_extent+0x96e/0x970 fs/bcachefs/fs.c:1323 Code: 0f 0b e8 f5 a3 7f fd 90 0f 0b e8 ed a3 7f fd e9 f7 fe ff ff e8 e3 a3 7f fd 90 0f 0b e8 db a3 7f fd 90 0f 0b e8 d3 a3 7f fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 RSP: 0018:ffffc9000d2776a0 EFLAGS: 00010293 RAX: ffffffff8440176d RBX: 0000000000000018 RCX: ffff888000492440 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000007 RBP: 0000000000000001 R08: ffff888000492440 R09: 0000000000000004 R10: 0000000000000012 R11: 0000000000000000 R12: 0000000000000000 R13: ffffc9000d277b28 R14: 0000000000000002 R15: 0000000000000002 FS: 00007fc1740a26c0(0000) GS:ffff88808d20f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2b47a33000 CR3: 0000000042c8d000 CR4: 0000000000352ef0 Call Trace: bch2_fiemap+0x2871/0x2a90 fs/bcachefs/fs.c:1538 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x1170/0x1430 fs/ioctl.c:532 __do_sys_ioctl fs/ioctl.c:596 [inline] __se_sys_ioctl+0x82/0x170 fs/ioctl.c:584 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc17318ebe9 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:00007fc1740a2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fc1733b5fa0 RCX: 00007fc17318ebe9 RDX: 0000200000005dc0 RSI: 00000000c020660b RDI: 0000000000000004 RBP: 00007fc173211e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fc1733b6038 R14: 00007fc1733b5fa0 R15: 00007ffe918e0638 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_fill_extent+0x96e/0x970 fs/bcachefs/fs.c:1323 Code: 0f 0b e8 f5 a3 7f fd 90 0f 0b e8 ed a3 7f fd e9 f7 fe ff ff e8 e3 a3 7f fd 90 0f 0b e8 db a3 7f fd 90 0f 0b e8 d3 a3 7f fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 RSP: 0018:ffffc9000d2776a0 EFLAGS: 00010293 RAX: ffffffff8440176d RBX: 0000000000000018 RCX: ffff888000492440 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000007 RBP: 0000000000000001 R08: ffff888000492440 R09: 0000000000000004 R10: 0000000000000012 R11: 0000000000000000 R12: 0000000000000000 R13: ffffc9000d277b28 R14: 0000000000000002 R15: 0000000000000002 FS: 00007fc1740a26c0(0000) GS:ffff88808d20f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000042c8d000 CR4: 0000000000352ef0