------------[ cut here ]------------ kernel BUG at fs/bcachefs/btree_iter.c:633! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5501 Comm: syz.0.17 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_btree_path_level_init+0xa01/0xa20 fs/bcachefs/btree_iter.c:633 Code: fd 90 0f 0b e8 50 a7 97 fd 90 0f 0b e8 48 a7 97 fd 90 0f 0b e8 40 a7 97 fd 90 0f 0b e8 38 a7 97 fd 90 0f 0b e8 30 a7 97 fd 90 <0f> 0b e8 28 a7 97 fd 90 0f 0b e8 20 a7 97 fd 90 0f 0b 66 66 66 66 RSP: 0018:ffffc9000298e4a0 EFLAGS: 00010293 RAX: ffffffff842816d0 RBX: ffff8880504402d8 RCX: ffff888033bb0000 RDX: 0000000000000000 RSI: 0000000000000052 RDI: 0000000000000000 RBP: dffffc0000000000 R08: 00000000000001c9 R09: 1ffff11007f9a116 R10: dffffc0000000000 R11: ffffed1007f9a117 R12: 0000000000000052 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 000055558ec9e500(0000) GS:ffff88808d20d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3bb7f909c0 CR3: 0000000043499000 CR4: 0000000000352ef0 Call Trace: btree_path_down fs/bcachefs/btree_iter.c:994 [inline] bch2_btree_path_traverse_one+0x1367/0x21d0 fs/bcachefs/btree_iter.c:1202 bch2_btree_path_traverse fs/bcachefs/btree_iter.h:250 [inline] __bch2_btree_iter_peek fs/bcachefs/btree_iter.c:2267 [inline] bch2_btree_iter_peek_max+0x9e8/0x58f0 fs/bcachefs/btree_iter.c:2384 bch2_btree_iter_peek_max_type fs/bcachefs/btree_iter.h:743 [inline] bch2_gc_btree fs/bcachefs/btree_gc.c:729 [inline] bch2_gc_btrees fs/bcachefs/btree_gc.c:792 [inline] bch2_check_allocations+0x120d/0x57b0 fs/bcachefs/btree_gc.c:1094 bch2_run_recovery_pass fs/bcachefs/recovery_passes.c:484 [inline] __bch2_run_recovery_passes+0x3bd/0x1060 fs/bcachefs/recovery_passes.c:539 bch2_run_recovery_passes+0x184/0x210 fs/bcachefs/recovery_passes.c:610 bch2_fs_recovery+0x2690/0x3a50 fs/bcachefs/recovery.c:1016 bch2_fs_start+0xaaf/0xda0 fs/bcachefs/super.c:1213 bch2_fs_get_tree+0xb39/0x1520 fs/bcachefs/fs.c:2488 vfs_get_tree+0x8f/0x2b0 fs/super.c:1815 do_new_mount+0x2a2/0x9e0 fs/namespace.c:3808 do_mount fs/namespace.c:4136 [inline] __do_sys_mount fs/namespace.c:4347 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4324 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: 0033:0x7fd782f9038a 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:00007ffe60640548 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffe606405d0 RCX: 00007fd782f9038a RDX: 0000200000000040 RSI: 0000200000004940 RDI: 00007ffe60640590 RBP: 0000200000000040 R08: 00007ffe606405d0 R09: 0000000000004000 R10: 0000000000004000 R11: 0000000000000246 R12: 0000200000004940 R13: 00007ffe60640590 R14: 00000000000049ae R15: 0000200000000180 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_btree_path_level_init+0xa01/0xa20 fs/bcachefs/btree_iter.c:633 Code: fd 90 0f 0b e8 50 a7 97 fd 90 0f 0b e8 48 a7 97 fd 90 0f 0b e8 40 a7 97 fd 90 0f 0b e8 38 a7 97 fd 90 0f 0b e8 30 a7 97 fd 90 <0f> 0b e8 28 a7 97 fd 90 0f 0b e8 20 a7 97 fd 90 0f 0b 66 66 66 66 RSP: 0018:ffffc9000298e4a0 EFLAGS: 00010293 RAX: ffffffff842816d0 RBX: ffff8880504402d8 RCX: ffff888033bb0000 RDX: 0000000000000000 RSI: 0000000000000052 RDI: 0000000000000000 RBP: dffffc0000000000 R08: 00000000000001c9 R09: 1ffff11007f9a116 R10: dffffc0000000000 R11: ffffed1007f9a117 R12: 0000000000000052 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 000055558ec9e500(0000) GS:ffff88808d20d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3bb7f909c0 CR3: 0000000043499000 CR4: 0000000000352ef0