------------[ cut here ]------------ kernel BUG at fs/bcachefs/btree_iter.c:1816! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 37 Comm: kworker/0:1H Not tainted 6.12.0-syzkaller-10553-gb86545e02e8c #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: bcachefs_copygc bch2_write_point_do_index_updates RIP: 0010:bch2_btree_path_peek_slot+0xf50/0xf90 fs/bcachefs/btree_iter.c:1816 Code: f7 ff ff 48 89 34 24 be 08 00 00 00 44 89 44 24 08 e8 e4 fe e3 fd 48 8b 34 24 44 8b 44 24 08 e9 50 f7 ff ff e8 71 16 79 fd 90 <0f> 0b e8 69 16 79 fd 90 0f 0b e8 41 3e b6 07 e8 5c 16 79 fd 90 0f RSP: 0018:ffffc90000584de0 EFLAGS: 00010293 RAX: ffffffff841cce0f RBX: 0000000000002164 RCX: ffff88801dc00000 RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000000 RBP: ffffc90000584ef0 R08: ffffffff841cbff0 R09: 0000000000000000 R10: ffffc90000585040 R11: fffff520000b0a0a R12: dffffc0000000000 R13: 1ffff1100abe0117 R14: ffff888055f00898 R15: 1ffff1100abe0116 FS: 0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200030c0 CR3: 000000003f95c000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bch2_btree_iter_peek_slot+0xa2f/0x2550 fs/bcachefs/btree_iter.c:2658 __bch2_bkey_get_iter fs/bcachefs/btree_iter.h:575 [inline] bch2_bkey_get_iter fs/bcachefs/btree_iter.h:589 [inline] try_alloc_bucket fs/bcachefs/alloc_foreground.c:305 [inline] bch2_bucket_alloc_freelist fs/bcachefs/alloc_foreground.c:525 [inline] bch2_bucket_alloc_trans+0x1997/0x3a50 fs/bcachefs/alloc_foreground.c:648 bch2_bucket_alloc_set_trans+0x517/0xd30 fs/bcachefs/alloc_foreground.c:808 __open_bucket_add_buckets+0x13d0/0x1ec0 fs/bcachefs/alloc_foreground.c:1057 open_bucket_add_buckets+0x33a/0x410 fs/bcachefs/alloc_foreground.c:1101 bch2_alloc_sectors_start_trans+0xce9/0x2030 __bch2_btree_node_alloc fs/bcachefs/btree_update_interior.c:339 [inline] bch2_btree_reserve_get+0x612/0x1890 fs/bcachefs/btree_update_interior.c:549 bch2_btree_update_start+0xe56/0x14e0 fs/bcachefs/btree_update_interior.c:1247 bch2_btree_split_leaf+0x123/0x840 fs/bcachefs/btree_update_interior.c:1856 bch2_trans_commit_error+0x212/0x1390 fs/bcachefs/btree_trans_commit.c:942 __bch2_trans_commit+0x7ead/0x93c0 fs/bcachefs/btree_trans_commit.c:1140 bch2_trans_commit fs/bcachefs/btree_update.h:184 [inline] __bch2_data_update_index_update+0x56bb/0x77f0 fs/bcachefs/data_update.c:368 bch2_data_update_index_update+0x63/0x90 fs/bcachefs/data_update.c:414 __bch2_write_index+0x16d1/0x2140 fs/bcachefs/io_write.c:527 bch2_write_point_do_index_updates+0x32e/0x690 fs/bcachefs/io_write.c:635 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_btree_path_peek_slot+0xf50/0xf90 fs/bcachefs/btree_iter.c:1816 Code: f7 ff ff 48 89 34 24 be 08 00 00 00 44 89 44 24 08 e8 e4 fe e3 fd 48 8b 34 24 44 8b 44 24 08 e9 50 f7 ff ff e8 71 16 79 fd 90 <0f> 0b e8 69 16 79 fd 90 0f 0b e8 41 3e b6 07 e8 5c 16 79 fd 90 0f RSP: 0018:ffffc90000584de0 EFLAGS: 00010293 RAX: ffffffff841cce0f RBX: 0000000000002164 RCX: ffff88801dc00000 RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000000 RBP: ffffc90000584ef0 R08: ffffffff841cbff0 R09: 0000000000000000 R10: ffffc90000585040 R11: fffff520000b0a0a R12: dffffc0000000000 R13: 1ffff1100abe0117 R14: ffff888055f00898 R15: 1ffff1100abe0116 FS: 0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000558d48c9d0c8 CR3: 0000000051fac000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400