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hfsplus: request for non-existent node 256 in B*Tree
hfsplus: request for non-existent node 256 in B*Tree
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BUG: KASAN: slab-out-of-bounds in hfsplus_bnode_read+0x22a/0x240 fs/hfsplus/bnode.c:32
Read of size 8 at addr ffff888021b40cc0 by task syz-executor428/5181

CPU: 0 PID: 5181 Comm: syz-executor428 Not tainted 6.9.0-rc7-syzkaller-00136-gf4345f05c0df #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:488
 kasan_report+0xd9/0x110 mm/kasan/report.c:601
 hfsplus_bnode_read+0x22a/0x240 fs/hfsplus/bnode.c:32
 hfsplus_bnode_read_u16 fs/hfsplus/bnode.c:45 [inline]
 hfsplus_bnode_dump+0x2a2/0x3e0 fs/hfsplus/bnode.c:321
 hfsplus_brec_remove+0x3e2/0x4f0 fs/hfsplus/brec.c:229
 __hfsplus_delete_attr+0x2a2/0x3b0 fs/hfsplus/attributes.c:299
 hfsplus_delete_all_attrs+0x271/0x330 fs/hfsplus/attributes.c:378
 hfsplus_delete_cat+0x844/0xdd0 fs/hfsplus/catalog.c:425
 hfsplus_unlink+0x213/0x7f0 fs/hfsplus/dir.c:385
 vfs_unlink+0x2fb/0x910 fs/namei.c:4335
 do_unlinkat+0x5c0/0x750 fs/namei.c:4399
 __do_sys_unlink fs/namei.c:4447 [inline]
 __se_sys_unlink fs/namei.c:4445 [inline]
 __x64_sys_unlink+0xc7/0x110 fs/namei.c:4445
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3fc5f4b5f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd6d81d338 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 00007ffd6d81d518 RCX: 00007f3fc5f4b5f9
RDX: 00007f3fc5f4a691 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007f3fc5fbe610 R08: 000000000000066d R09: 0000000000000000
R10: 00007ffd6d81d200 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd6d81d508 R14: 0000000000000001 R15: 0000000000000001
 </TASK>

Allocated by task 5181:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:387
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slub.c:3972 [inline]
 __kmalloc+0x1f9/0x440 mm/slub.c:3985
 kmalloc include/linux/slab.h:632 [inline]
 kzalloc include/linux/slab.h:749 [inline]
 __hfs_bnode_create+0x108/0x870 fs/hfsplus/bnode.c:409
 hfsplus_bnode_find+0x2c8/0xcb0 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+0x24a/0x330 fs/hfsplus/attributes.c:371
 hfsplus_delete_cat+0x844/0xdd0 fs/hfsplus/catalog.c:425
 hfsplus_unlink+0x213/0x7f0 fs/hfsplus/dir.c:385
 vfs_unlink+0x2fb/0x910 fs/namei.c:4335
 do_unlinkat+0x5c0/0x750 fs/namei.c:4399
 __do_sys_unlink fs/namei.c:4447 [inline]
 __se_sys_unlink fs/namei.c:4445 [inline]
 __x64_sys_unlink+0xc7/0x110 fs/namei.c:4445
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888021b40c00
 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 [ffff888021b40c00, ffff888021b40c98)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x21b40
flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000800 ffff888015042a00 ffffea00008d06c0 0000000000000002
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 1, tgid -438742273 (swapper/0), ts 1, free_ts 9727640415
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d4/0x350 mm/page_alloc.c:1534
 prep_new_page mm/page_alloc.c:1541 [inline]
 get_page_from_freelist+0xa28/0x3780 mm/page_alloc.c:3317
 __alloc_pages+0x22b/0x2460 mm/page_alloc.c:4575
 __alloc_pages_node include/linux/gfp.h:238 [inline]
 alloc_pages_node include/linux/gfp.h:261 [inline]
 alloc_slab_page mm/slub.c:2180 [inline]
 allocate_slab mm/slub.c:2343 [inline]
 new_slab+0xcc/0x3a0 mm/slub.c:2396
 ___slab_alloc+0x66d/0x1790 mm/slub.c:3530
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3615
 __slab_alloc_node mm/slub.c:3668 [inline]
 slab_alloc_node mm/slub.c:3841 [inline]
 __do_kmalloc_node mm/slub.c:3971 [inline]
 __kmalloc+0x3bf/0x440 mm/slub.c:3985
 kmalloc include/linux/slab.h:632 [inline]
 usb_alloc_urb+0x69/0xa0 drivers/usb/core/urb.c:75
 usb_mdc800_init+0x468/0x800 drivers/usb/image/mdc800.c:1017
 do_one_initcall+0x128/0x700 init/main.c:1245
 do_initcall_level init/main.c:1307 [inline]
 do_initcalls init/main.c:1323 [inline]
 do_basic_setup init/main.c:1342 [inline]
 kernel_init_freeable+0x69d/0xca0 init/main.c:1555
 kernel_init+0x1c/0x2b0 init/main.c:1444
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
page last free pid 55 tgid 55 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1141 [inline]
 free_unref_page_prepare+0x527/0xb10 mm/page_alloc.c:2347
 free_unref_page+0x33/0x3c0 mm/page_alloc.c:2487
 kasan_depopulate_vmalloc_pte+0x63/0x80 mm/kasan/shadow.c:408
 apply_to_pte_range mm/memory.c:2744 [inline]
 apply_to_pmd_range mm/memory.c:2788 [inline]
 apply_to_pud_range mm/memory.c:2824 [inline]
 apply_to_p4d_range mm/memory.c:2860 [inline]
 __apply_to_page_range+0x57b/0xdc0 mm/memory.c:2894
 kasan_release_vmalloc+0xac/0xc0 mm/kasan/shadow.c:525
 purge_vmap_node+0x3fc/0x920 mm/vmalloc.c:2183
 __purge_vmap_area_lazy+0x9ca/0xc10 mm/vmalloc.c:2265
 drain_vmap_area_work+0x27/0x40 mm/vmalloc.c:2299
 process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3267
 process_scheduled_works kernel/workqueue.c:3348 [inline]
 worker_thread+0x6c8/0xf70 kernel/workqueue.c:3429
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
 ffff888021b40b80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff888021b40c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888021b40c80: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc
                                           ^
 ffff888021b40d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888021b40d80: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc
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