loop4: detected capacity change from 0 to 1024 hfsplus: request for non-existent node 1024 in B*Tree hfsplus: request for non-existent node 1024 in B*Tree ================================================================== BUG: KASAN: slab-out-of-bounds in hfsplus_bnode_read+0x234/0x250 fs/hfsplus/bnode.c:32 Read of size 8 at addr ffff88802ad92fa0 by task syz-executor.4/11061 CPU: 1 PID: 11061 Comm: syz-executor.4 Not tainted 6.7.0-syzkaller-13004-g4fbbed787267 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc4/0x620 mm/kasan/report.c:488 kasan_report+0xda/0x110 mm/kasan/report.c:601 hfsplus_bnode_read+0x234/0x250 fs/hfsplus/bnode.c:32 hfsplus_bnode_read_u16 fs/hfsplus/bnode.c:45 [inline] hfsplus_bnode_dump+0x2a2/0x3d0 fs/hfsplus/bnode.c:321 hfsplus_brec_remove+0x3de/0x4f0 fs/hfsplus/brec.c:229 __hfsplus_delete_attr+0x29e/0x3b0 fs/hfsplus/attributes.c:299 hfsplus_delete_all_attrs+0x26d/0x330 fs/hfsplus/attributes.c:378 hfsplus_delete_cat+0x83b/0xdd0 fs/hfsplus/catalog.c:425 hfsplus_unlink+0x213/0x7f0 fs/hfsplus/dir.c:385 vfs_unlink+0x2f1/0x900 fs/namei.c:4334 do_unlinkat+0x5bc/0x740 fs/namei.c:4398 __do_sys_unlink fs/namei.c:4446 [inline] __se_sys_unlink fs/namei.c:4444 [inline] __x64_sys_unlink+0xc8/0x110 fs/namei.c:4444 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f090b47cda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f090c2040c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 00007f090b5abf80 RCX: 00007f090b47cda9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007f090b4c947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f090b5abf80 R15: 00007ffdd3470128 Allocated by task 11061: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:372 [inline] __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:389 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:3981 [inline] __kmalloc+0x1f9/0x440 mm/slub.c:3994 kmalloc include/linux/slab.h:594 [inline] kzalloc include/linux/slab.h:711 [inline] __hfs_bnode_create+0x108/0x860 fs/hfsplus/bnode.c:409 hfsplus_bnode_find+0x2c4/0xcb0 fs/hfsplus/bnode.c:486 hfsplus_brec_find+0x2b9/0x520 fs/hfsplus/bfind.c:183 hfsplus_find_attr fs/hfsplus/attributes.c:160 [inline] hfsplus_delete_all_attrs+0x246/0x330 fs/hfsplus/attributes.c:371 hfsplus_delete_cat+0x83b/0xdd0 fs/hfsplus/catalog.c:425 hfsplus_unlink+0x213/0x7f0 fs/hfsplus/dir.c:385 vfs_unlink+0x2f1/0x900 fs/namei.c:4334 do_unlinkat+0x5bc/0x740 fs/namei.c:4398 __do_sys_unlink fs/namei.c:4446 [inline] __se_sys_unlink fs/namei.c:4444 [inline] __x64_sys_unlink+0xc8/0x110 fs/namei.c:4444 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b The buggy address belongs to the object at ffff88802ad92ee0 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 [ffff88802ad92ee0, ffff88802ad92f78) The buggy address belongs to the physical page: page:ffffea0000ab6480 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2ad92 flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000800 ffff888013041a00 dead000000000100 dead000000000122 raw: 0000000000000000 00000000800f000f 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 1, tgid 1 (swapper/0), ts 28440632937, free_ts 28439673545 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2d0/0x350 mm/page_alloc.c:1533 prep_new_page mm/page_alloc.c:1540 [inline] get_page_from_freelist+0xa28/0x3780 mm/page_alloc.c:3311 __alloc_pages+0x22f/0x2440 mm/page_alloc.c:4567 __alloc_pages_node include/linux/gfp.h:238 [inline] alloc_pages_node include/linux/gfp.h:261 [inline] alloc_slab_page mm/slub.c:2190 [inline] allocate_slab mm/slub.c:2354 [inline] new_slab+0xcc/0x3a0 mm/slub.c:2407 ___slab_alloc+0x4af/0x19a0 mm/slub.c:3540 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3625 __slab_alloc_node mm/slub.c:3678 [inline] slab_alloc_node mm/slub.c:3850 [inline] kmalloc_trace+0x30b/0x340 mm/slub.c:4007 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:711 [inline] call_usermodehelper_setup+0x9a/0x340 kernel/umh.c:363 kobject_uevent_env+0x1678/0x1800 lib/kobject_uevent.c:614 kernel_add_sysfs_param kernel/params.c:821 [inline] param_sysfs_builtin kernel/params.c:856 [inline] param_sysfs_builtin_init+0x327/0x450 kernel/params.c:990 do_one_initcall+0x11c/0x650 init/main.c:1236 do_initcall_level init/main.c:1298 [inline] do_initcalls init/main.c:1314 [inline] do_basic_setup init/main.c:1333 [inline] kernel_init_freeable+0x687/0xc10 init/main.c:1551 kernel_init+0x1c/0x2a0 init/main.c:1441 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 page last free pid 781 tgid 781 stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1140 [inline] free_unref_page_prepare+0x51f/0xb10 mm/page_alloc.c:2346 free_unref_page+0x33/0x3c0 mm/page_alloc.c:2486 vfree+0x181/0x7a0 mm/vmalloc.c:2842 delayed_vfree_work+0x56/0x70 mm/vmalloc.c:2763 process_one_work+0x886/0x15d0 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x8b9/0x1290 kernel/workqueue.c:2787 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Memory state around the buggy address: ffff88802ad92e80: fb fb fc fc fc fc fc fc fc fc fc fc 00 00 00 00 ffff88802ad92f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc >ffff88802ad92f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88802ad93000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88802ad93080: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc 00 ==================================================================