bcachefs (loop0): entry in freespace btree for nonexistant dev:bucket 0:33554475, shutting down error not marked as autofix and not in fsck run fsck, and forward to devs so error can be marked for self-healing emergency read only at seq 11 ================================================================== BUG: KASAN: slab-use-after-free in bch2_bucket_alloc_trans+0x1aa0/0x2410 fs/bcachefs/alloc_foreground.c:547 Read of size 8 at addr ffff888035ea6720 by task kworker/u4:7/1039 CPU: 0 UID: 0 PID: 1039 Comm: kworker/u4:7 Not tainted 6.16.0-rc3-syzkaller-00044-g7595b66ae9de #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 Workqueue: btree_update btree_interior_update_work Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xd2/0x2b0 mm/kasan/report.c:521 kasan_report+0x118/0x150 mm/kasan/report.c:634 bch2_bucket_alloc_trans+0x1aa0/0x2410 fs/bcachefs/alloc_foreground.c:547 bch2_bucket_alloc_set_trans+0x5a6/0xe70 fs/bcachefs/alloc_foreground.c:728 __open_bucket_add_buckets+0x1437/0x1e40 fs/bcachefs/alloc_foreground.c:925 open_bucket_add_buckets+0x2ee/0x440 fs/bcachefs/alloc_foreground.c:957 bch2_alloc_sectors_start_trans+0xe24/0x1e80 fs/bcachefs/alloc_foreground.c:1285 __bch2_btree_node_alloc fs/bcachefs/btree_update_interior.c:320 [inline] bch2_btree_reserve_get+0x641/0x1810 fs/bcachefs/btree_update_interior.c:534 bch2_btree_update_start+0x147e/0x1dc0 fs/bcachefs/btree_update_interior.c:1270 bch2_btree_split_leaf+0x14b/0x8e0 fs/bcachefs/btree_update_interior.c:1920 bch2_trans_commit_error+0x1b7/0x1130 fs/bcachefs/btree_trans_commit.c:911 __bch2_trans_commit+0x1ce8/0x8880 fs/bcachefs/btree_trans_commit.c:1098 bch2_trans_commit fs/bcachefs/btree_update.h:242 [inline] btree_update_nodes_written fs/bcachefs/btree_update_interior.c:729 [inline] btree_interior_update_work+0x1082/0x27d0 fs/bcachefs/btree_update_interior.c:867 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Allocated by task 1039: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4328 [inline] __kmalloc_node_track_caller_noprof+0x271/0x4e0 mm/slub.c:4347 __do_krealloc mm/slub.c:4905 [inline] krealloc_noprof+0x124/0x340 mm/slub.c:4958 __bch2_trans_kmalloc+0x26c/0xc80 fs/bcachefs/btree_iter.c:3187 bch2_trans_kmalloc_nomemzero_ip fs/bcachefs/btree_iter.h:586 [inline] bch2_trans_kmalloc_nomemzero fs/bcachefs/btree_iter.h:621 [inline] __bch2_trans_subbuf_alloc+0x2da/0x460 fs/bcachefs/btree_update.c:557 bch2_trans_subbuf_alloc fs/bcachefs/btree_update.h:148 [inline] bch2_disk_accounting_mod+0x9d5/0x1160 fs/bcachefs/disk_accounting.c:128 bch2_dev_data_type_accounting_mod fs/bcachefs/alloc_background.c:812 [inline] bch2_alloc_key_to_dev_counters+0x7fc/0x1060 fs/bcachefs/alloc_background.c:828 bch2_trigger_alloc+0x1eb7/0x4090 fs/bcachefs/alloc_background.c:944 run_one_trans_trigger fs/bcachefs/btree_trans_commit.c:-1 [inline] bch2_trans_commit_run_triggers fs/bcachefs/btree_trans_commit.c:554 [inline] __bch2_trans_commit+0xa69/0x8880 fs/bcachefs/btree_trans_commit.c:1019 bch2_trans_commit fs/bcachefs/btree_update.h:242 [inline] btree_update_nodes_written fs/bcachefs/btree_update_interior.c:729 [inline] btree_interior_update_work+0x1082/0x27d0 fs/bcachefs/btree_update_interior.c:867 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Freed by task 1039: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2381 [inline] slab_free mm/slub.c:4643 [inline] kfree+0x18e/0x440 mm/slub.c:4842 krealloc_noprof+0x1cd/0x340 mm/slub.c:-1 __bch2_trans_kmalloc+0x26c/0xc80 fs/bcachefs/btree_iter.c:3187 bch2_trans_kmalloc_nomemzero_ip fs/bcachefs/btree_iter.h:586 [inline] bch2_trans_kmalloc_nomemzero fs/bcachefs/btree_iter.h:621 [inline] __bch2_trans_subbuf_alloc+0x2da/0x460 fs/bcachefs/btree_update.c:557 bch2_trans_subbuf_alloc fs/bcachefs/btree_update.h:148 [inline] bch2_trans_jset_entry_alloc fs/bcachefs/btree_update.h:168 [inline] __bch2_trans_log_str fs/bcachefs/btree_update.c:814 [inline] bch2_trans_log_str+0xd5/0x3c0 fs/bcachefs/btree_update.c:827 __bch2_fsck_err+0xc11/0xfb0 fs/bcachefs/error.c:625 bch2_check_discard_freespace_key+0x569/0xce0 fs/bcachefs/alloc_background.c:1422 try_alloc_bucket fs/bcachefs/alloc_foreground.c:272 [inline] bch2_bucket_alloc_freelist fs/bcachefs/alloc_foreground.c:420 [inline] bch2_bucket_alloc_trans+0x1333/0x2410 fs/bcachefs/alloc_foreground.c:544 bch2_bucket_alloc_set_trans+0x5a6/0xe70 fs/bcachefs/alloc_foreground.c:728 __open_bucket_add_buckets+0x1437/0x1e40 fs/bcachefs/alloc_foreground.c:925 open_bucket_add_buckets+0x2ee/0x440 fs/bcachefs/alloc_foreground.c:957 bch2_alloc_sectors_start_trans+0xe24/0x1e80 fs/bcachefs/alloc_foreground.c:1285 __bch2_btree_node_alloc fs/bcachefs/btree_update_interior.c:320 [inline] bch2_btree_reserve_get+0x641/0x1810 fs/bcachefs/btree_update_interior.c:534 bch2_btree_update_start+0x147e/0x1dc0 fs/bcachefs/btree_update_interior.c:1270 bch2_btree_split_leaf+0x14b/0x8e0 fs/bcachefs/btree_update_interior.c:1920 bch2_trans_commit_error+0x1b7/0x1130 fs/bcachefs/btree_trans_commit.c:911 __bch2_trans_commit+0x1ce8/0x8880 fs/bcachefs/btree_trans_commit.c:1098 bch2_trans_commit fs/bcachefs/btree_update.h:242 [inline] btree_update_nodes_written fs/bcachefs/btree_update_interior.c:729 [inline] btree_interior_update_work+0x1082/0x27d0 fs/bcachefs/btree_update_interior.c:867 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 The buggy address belongs to the object at ffff888035ea6000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 1824 bytes inside of freed 2048-byte region [ffff888035ea6000, ffff888035ea6800) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x35ea0 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 04fff00000000040 ffff88801a442000 dead000000000100 dead000000000122 raw: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000 head: 04fff00000000040 ffff88801a442000 dead000000000100 dead000000000122 head: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000 head: 04fff00000000003 ffffea0000d7a801 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5013, tgid 5013 (dhcpcd), ts 46871205789, free_ts 46850115469 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704 prep_new_page mm/page_alloc.c:1712 [inline] get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419 alloc_slab_page mm/slub.c:2451 [inline] allocate_slab+0x8a/0x3b0 mm/slub.c:2619 new_slab mm/slub.c:2673 [inline] ___slab_alloc+0xbfc/0x1480 mm/slub.c:3859 __slab_alloc mm/slub.c:3949 [inline] __slab_alloc_node mm/slub.c:4024 [inline] slab_alloc_node mm/slub.c:4185 [inline] __do_kmalloc_node mm/slub.c:4327 [inline] __kmalloc_noprof+0x305/0x4f0 mm/slub.c:4340 kmalloc_noprof include/linux/slab.h:909 [inline] sk_prot_alloc+0xe7/0x220 net/core/sock.c:2247 sk_alloc+0x3a/0x370 net/core/sock.c:2303 __netlink_create+0x65/0x260 net/netlink/af_netlink.c:629 netlink_create+0x3ca/0x590 net/netlink/af_netlink.c:687 __sock_create+0x4b0/0x9f0 net/socket.c:1541 sock_create net/socket.c:1599 [inline] __sys_socket_create net/socket.c:1636 [inline] __sys_socket+0xd7/0x1b0 net/socket.c:1683 __do_sys_socket net/socket.c:1697 [inline] __se_sys_socket net/socket.c:1695 [inline] __x64_sys_socket+0x7a/0x90 net/socket.c:1695 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 page last free pid 5104 tgid 5104 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1248 [inline] __free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706 discard_slab mm/slub.c:2717 [inline] __put_partials+0x161/0x1c0 mm/slub.c:3186 put_cpu_partial+0x17c/0x250 mm/slub.c:3261 __slab_free+0x2f7/0x400 mm/slub.c:4513 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4148 [inline] slab_alloc_node mm/slub.c:4197 [inline] __do_kmalloc_node mm/slub.c:4327 [inline] __kmalloc_noprof+0x224/0x4f0 mm/slub.c:4340 kmalloc_noprof include/linux/slab.h:909 [inline] load_elf_phdrs fs/binfmt_elf.c:525 [inline] load_elf_binary+0x2cd/0x2790 fs/binfmt_elf.c:854 search_binary_handler fs/exec.c:1665 [inline] exec_binprm fs/exec.c:1697 [inline] bprm_execve+0x99c/0x1450 fs/exec.c:1749 do_execveat_common+0x510/0x6a0 fs/exec.c:1855 do_execve fs/exec.c:1929 [inline] __do_sys_execve fs/exec.c:2005 [inline] __se_sys_execve fs/exec.c:2000 [inline] __x64_sys_execve+0x94/0xb0 fs/exec.c:2000 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 Memory state around the buggy address: ffff888035ea6600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888035ea6680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888035ea6700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888035ea6780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888035ea6800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================