======================================================= hfsplus: request for non-existent node 256 in B*Tree hfsplus: request for non-existent node 256 in B*Tree ================================================================== BUG: KASAN: slab-out-of-bounds in hfsplus_bnode_read+0x144/0x150 fs/hfsplus/bnode.c:32 Read of size 8 at addr ffff888012eaa3c0 by task syz-executor378/4998 CPU: 0 PID: 4998 Comm: syz-executor378 Not tainted 6.4.0-rc5-syzkaller-00002-gf8dba31b0a82 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 print_address_description.constprop.0+0x2c/0x3c0 mm/kasan/report.c:351 print_report mm/kasan/report.c:462 [inline] kasan_report+0x11c/0x130 mm/kasan/report.c:572 hfsplus_bnode_read+0x144/0x150 fs/hfsplus/bnode.c:32 hfsplus_bnode_read_u16 fs/hfsplus/bnode.c:45 [inline] hfsplus_bnode_dump+0x2c6/0x3a0 fs/hfsplus/bnode.c:321 hfsplus_brec_remove+0x3db/0x4f0 fs/hfsplus/brec.c:229 __hfsplus_delete_attr+0x28a/0x3a0 fs/hfsplus/attributes.c:299 hfsplus_delete_all_attrs+0x25d/0x320 fs/hfsplus/attributes.c:378 hfsplus_delete_cat+0x86a/0xe40 fs/hfsplus/catalog.c:425 hfsplus_unlink+0x1e3/0x830 fs/hfsplus/dir.c:385 vfs_unlink+0x355/0x930 fs/namei.c:4327 do_unlinkat+0x3e3/0x680 fs/namei.c:4393 __do_sys_unlink fs/namei.c:4441 [inline] __se_sys_unlink fs/namei.c:4439 [inline] __x64_sys_unlink+0xca/0x110 fs/namei.c:4439 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f7655a3f789 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 00 00 90 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc7891ea88 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7655a3f789 RDX: 00007f76559fde03 RSI: 0000000000000000 RDI: 0000000020000000 RBP: 00007f76559ff020 R08: 000000000000066d R09: 0000000000000000 R10: 00007ffc7891e950 R11: 0000000000000246 R12: 00007f76559ff0b0 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 4998: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] ____kasan_kmalloc mm/kasan/common.c:333 [inline] __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:196 [inline] __do_kmalloc_node mm/slab_common.c:966 [inline] __kmalloc+0x5e/0x190 mm/slab_common.c:979 kmalloc include/linux/slab.h:563 [inline] kzalloc include/linux/slab.h:680 [inline] __hfs_bnode_create+0x107/0x840 fs/hfsplus/bnode.c:409 hfsplus_bnode_find+0x41c/0xc60 fs/hfsplus/bnode.c:486 hfsplus_brec_find+0x2b3/0x520 fs/hfsplus/bfind.c:183 hfsplus_find_attr fs/hfsplus/attributes.c:160 [inline] hfsplus_delete_all_attrs+0x236/0x320 fs/hfsplus/attributes.c:371 hfsplus_delete_cat+0x86a/0xe40 fs/hfsplus/catalog.c:425 hfsplus_unlink+0x1e3/0x830 fs/hfsplus/dir.c:385 vfs_unlink+0x355/0x930 fs/namei.c:4327 do_unlinkat+0x3e3/0x680 fs/namei.c:4393 __do_sys_unlink fs/namei.c:4441 [inline] __se_sys_unlink fs/namei.c:4439 [inline] __x64_sys_unlink+0xca/0x110 fs/namei.c:4439 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff888012eaa300 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 40 bytes to the right of allocated 152-byte region [ffff888012eaa300, ffff888012eaa398) The buggy address belongs to the physical page: page:ffffea00004baa80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12eaa anon flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000200 ffff888012441a00 0000000000000000 dead000000000001 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 12, tgid 12 (kworker/u4:1), ts 1767188754, free_ts 0 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2db/0x350 mm/page_alloc.c:1731 prep_new_page mm/page_alloc.c:1738 [inline] get_page_from_freelist+0xf41/0x2c00 mm/page_alloc.c:3502 __alloc_pages+0x1cb/0x4a0 mm/page_alloc.c:4768 alloc_pages+0x1aa/0x270 mm/mempolicy.c:2279 alloc_slab_page mm/slub.c:1851 [inline] allocate_slab+0x25f/0x390 mm/slub.c:1998 new_slab mm/slub.c:2051 [inline] ___slab_alloc+0xa91/0x1400 mm/slub.c:3192 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3291 __slab_alloc_node mm/slub.c:3344 [inline] slab_alloc_node mm/slub.c:3441 [inline] __kmem_cache_alloc_node+0x136/0x320 mm/slub.c:3490 kmalloc_node_trace+0x21/0xd0 mm/slab_common.c:1070 kmalloc_node include/linux/slab.h:575 [inline] kzalloc_node include/linux/slab.h:691 [inline] alloc_worker+0x43/0x1c0 kernel/workqueue.c:1849 create_worker+0xcc/0x620 kernel/workqueue.c:1949 maybe_create_worker kernel/workqueue.c:2223 [inline] manage_workers kernel/workqueue.c:2275 [inline] worker_thread+0xadf/0x10c0 kernel/workqueue.c:2524 kthread+0x344/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 page_owner free stack trace missing Memory state around the buggy address: ffff888012eaa280: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc ffff888012eaa300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888012eaa380: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888012eaa400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888012eaa480: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================