bi_parent_subvol=0 bi_nocow=0 bi_depth=0 bi_inodes_32bit=0, fixing bcachefs (loop0): inode points to missing dirent inum: 536870912:4294967295 mode=100755 flags=(15300000) journal_seq=4 hash_seed=8469d717004af4ef hash_type=siphash bi_size=10 bi_sectors=8 bi_version=0 bi_atime=2780562352 bi_ctime=2780562352 bi_mtime=2780562352 bi_otime=2780562352 bi_uid=0 bi_gid=0 bi_nlink=0 bi_generation=0 bi_dev=0 bi_data_checksum=0 bi_compression=0 bi_project=0 bi_background_compression=0 bi_data_replicas=0 bi_promote_target=0 bi_foreground_target=0 bi_background_target=0 bi_erasure_code=0 bi_fields_set=0 bi_dir=4096 bi_dir_offset=4330382808765833931 bi_subvol=0 bi_parent_subvol=0 bi_nocow=0 bi_depth=0 bi_inodes_32bit=0, fixing done bcachefs (loop0): resume_logged_ops... done bcachefs (loop0): delete_dead_inodes... done bcachefs (loop0): Fixed errors, running fsck a second time to verify fs is clean bcachefs (loop0): check_extents_to_backpointers... done bcachefs (loop0): check_inodes... done bcachefs (loop0): resume_logged_ops... done bcachefs (loop0): delete_dead_inodes... done bcachefs (loop0): done starting filesystem ================================================================== BUG: KASAN: slab-out-of-bounds in dirent_init_casefolded_name fs/bcachefs/dirent.c:294 [inline] BUG: KASAN: slab-out-of-bounds in dirent_create_key+0x582/0xcd0 fs/bcachefs/dirent.c:319 Write of size 257 at addr ffff888052d2c377 by task syz.0.0/5334 CPU: 0 UID: 0 PID: 5334 Comm: syz.0.0 Not tainted 6.15.0-rc1-syzkaller-00246-g900241a5cc15 #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 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0x16e/0x5b0 mm/kasan/report.c:521 kasan_report+0x143/0x180 mm/kasan/report.c:634 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x28f/0x2a0 mm/kasan/generic.c:189 __asan_memset+0x23/0x50 mm/kasan/shadow.c:84 dirent_init_casefolded_name fs/bcachefs/dirent.c:294 [inline] dirent_create_key+0x582/0xcd0 fs/bcachefs/dirent.c:319 bch2_dirent_create+0x330/0x13b0 fs/bcachefs/dirent.c:-1 bch2_create_trans+0x1366/0x1cf0 fs/bcachefs/namei.c:160 __bch2_create+0x793/0xf40 fs/bcachefs/fs.c:559 bch2_mknod fs/bcachefs/fs.c:728 [inline] bch2_mkdir+0xe9/0x1b0 fs/bcachefs/fs.c:883 vfs_mkdir+0x2f9/0x500 fs/namei.c:4324 do_mkdirat+0x273/0x3f0 fs/namei.c:4357 __do_sys_mkdirat fs/namei.c:4374 [inline] __se_sys_mkdirat fs/namei.c:4372 [inline] __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4372 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: 0033:0x7f5c6978d169 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:00007f5c6a606038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007f5c699a5fa0 RCX: 00007f5c6978d169 RDX: 0000000000000000 RSI: 0000200000000600 RDI: 0000000000000008 RBP: 00007f5c6980e990 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f5c699a5fa0 R15: 00007ffc6aa3a0e8 Allocated by task 5334: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x9d/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4331 [inline] __kmalloc_noprof+0x28e/0x4d0 mm/slub.c:4343 kmalloc_noprof include/linux/slab.h:909 [inline] __bch2_trans_get+0x6ba/0xd40 fs/bcachefs/btree_iter.c:3373 __bch2_create+0x391/0xf40 fs/bcachefs/fs.c:552 bch2_mknod fs/bcachefs/fs.c:728 [inline] bch2_mkdir+0xe9/0x1b0 fs/bcachefs/fs.c:883 vfs_mkdir+0x2f9/0x500 fs/namei.c:4324 do_mkdirat+0x273/0x3f0 fs/namei.c:4357 __do_sys_mkdirat fs/namei.c:4374 [inline] __se_sys_mkdirat fs/namei.c:4372 [inline] __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4372 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 The buggy address belongs to the object at ffff888052d2c000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 887 bytes inside of allocated 1024-byte region [ffff888052d2c000, ffff888052d2c400) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x52d2c head: order:2 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 ffff88801b041dc0 dead000000000122 0000000000000000 raw: 0000000000000000 0000000080080008 00000000f5000000 0000000000000000 head: 04fff00000000040 ffff88801b041dc0 dead000000000122 0000000000000000 head: 0000000000000000 0000000080080008 00000000f5000000 0000000000000000 head: 04fff00000000002 ffffea00014b4b01 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5334, tgid 5333 (syz.0.0), ts 69978698427, free_ts 69977163867 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1717 prep_new_page mm/page_alloc.c:1725 [inline] get_page_from_freelist+0x352b/0x36c0 mm/page_alloc.c:3652 __alloc_frozen_pages_noprof+0x211/0x5b0 mm/page_alloc.c:4934 alloc_pages_mpol+0x339/0x690 mm/mempolicy.c:2301 alloc_slab_page mm/slub.c:2459 [inline] allocate_slab+0x8f/0x3a0 mm/slub.c:2623 new_slab mm/slub.c:2676 [inline] ___slab_alloc+0xc3b/0x1500 mm/slub.c:3862 __slab_alloc+0x58/0xa0 mm/slub.c:3952 __slab_alloc_node mm/slub.c:4027 [inline] slab_alloc_node mm/slub.c:4188 [inline] __do_kmalloc_node mm/slub.c:4330 [inline] __kmalloc_noprof+0x2ea/0x4d0 mm/slub.c:4343 kmalloc_noprof include/linux/slab.h:909 [inline] __bch2_trans_get+0x6ba/0xd40 fs/bcachefs/btree_iter.c:3373 __bch2_create+0x391/0xf40 fs/bcachefs/fs.c:552 bch2_mknod fs/bcachefs/fs.c:728 [inline] bch2_mkdir+0xe9/0x1b0 fs/bcachefs/fs.c:883 vfs_mkdir+0x2f9/0x500 fs/namei.c:4324 do_mkdirat+0x273/0x3f0 fs/namei.c:4357 __do_sys_mkdirat fs/namei.c:4374 [inline] __se_sys_mkdirat fs/namei.c:4372 [inline] __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4372 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 page last free pid 5333 tgid 5333 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1262 [inline] __free_frozen_pages+0xde8/0x10a0 mm/page_alloc.c:2680 stack_depot_save_flags+0x45b/0x940 lib/stackdepot.c:678 kasan_save_stack mm/kasan/common.c:48 [inline] kasan_save_track+0x51/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x9d/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4331 [inline] __kmalloc_node_noprof+0x29a/0x4d0 mm/slub.c:4337 kmalloc_array_node_noprof include/linux/slab.h:1020 [inline] alloc_slab_obj_exts+0x3a/0xa0 mm/slub.c:1987 __memcg_slab_post_alloc_hook+0x31c/0x7e0 mm/memcontrol.c:3075 memcg_slab_post_alloc_hook mm/slub.c:2188 [inline] slab_post_alloc_hook mm/slub.c:4161 [inline] slab_alloc_node mm/slub.c:4200 [inline] kmem_cache_alloc_noprof+0x28f/0x390 mm/slub.c:4207 vm_area_dup+0x2b/0x5b0 kernel/fork.c:488 __split_vma+0x1b8/0xb20 mm/vma.c:477 split_vma mm/vma.c:553 [inline] vma_modify+0x280/0x390 mm/vma.c:1547 vma_modify_flags+0x3b2/0x430 mm/vma.c:1565 mprotect_fixup+0x445/0xa40 mm/mprotect.c:658 do_mprotect_pkey+0x99f/0xde0 mm/mprotect.c:832 __do_sys_mprotect mm/mprotect.c:853 [inline] __se_sys_mprotect mm/mprotect.c:850 [inline] __x64_sys_mprotect+0x80/0x90 mm/mprotect.c:850 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 Memory state around the buggy address: ffff888052d2c300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888052d2c380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888052d2c400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888052d2c480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888052d2c500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================