hfsplus: request for non-existent node 393216 in B*Tree
hfsplus: request for non-existent node 393216 in B*Tree
==================================================================
BUG: KASAN: slab-out-of-bounds in hfsplus_bnode_read+0x19b/0x1b0 fs/hfsplus/bnode.c:32
Read of size 8 at addr ffff8880b4b837b8 by task syz-executor263/8094
CPU: 0 PID: 8094 Comm: syz-executor263 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
print_address_description.cold+0x54/0x219 mm/kasan/report.c:256
kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354
kasan_report mm/kasan/report.c:412 [inline]
__asan_report_load8_noabort+0x88/0x90 mm/kasan/report.c:433
hfsplus_bnode_read+0x19b/0x1b0 fs/hfsplus/bnode.c:32
hfsplus_bnode_read_u16 fs/hfsplus/bnode.c:47 [inline]
hfsplus_bnode_dump+0x2c2/0x3a0 fs/hfsplus/bnode.c:328
hfsplus_brec_remove+0x3d7/0x4e0 fs/hfsplus/brec.c:229
__hfsplus_delete_attr+0x217/0x370 fs/hfsplus/attributes.c:299
hfsplus_delete_all_attrs+0x149/0x3f0 fs/hfsplus/attributes.c:378
hfsplus_delete_cat+0x824/0xe30 fs/hfsplus/catalog.c:425
hfsplus_unlink+0x1d2/0x820 fs/hfsplus/dir.c:385
vfs_unlink+0x27d/0x4e0 fs/namei.c:4002
do_unlinkat+0x3b8/0x660 fs/namei.c:4065
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f7b69230829
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:00007ffceb28df28 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7b69230829
RDX: 00007f7b691eeea3 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007f7b691f00c0 R08: 00000000000005f2 R09: 0000000000000000
R10: 00007ffceb28ddf0 R11: 0000000000000246 R12: 00007f7b691f0150
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Allocated by task 8094:
__do_kmalloc mm/slab.c:3727 [inline]
__kmalloc+0x15a/0x3c0 mm/slab.c:3736
kmalloc include/linux/slab.h:520 [inline]
kzalloc include/linux/slab.h:709 [inline]
__hfs_bnode_create+0x105/0xb60 fs/hfsplus/bnode.c:416
hfsplus_bnode_find+0x2aa/0xb80 fs/hfsplus/bnode.c:497
hfsplus_brec_find+0x2af/0x500 fs/hfsplus/bfind.c:183
hfsplus_find_attr fs/hfsplus/attributes.c:160 [inline]
hfsplus_delete_all_attrs+0x2dd/0x3f0 fs/hfsplus/attributes.c:371
hfsplus_delete_cat+0x824/0xe30 fs/hfsplus/catalog.c:425
hfsplus_unlink+0x1d2/0x820 fs/hfsplus/dir.c:385
vfs_unlink+0x27d/0x4e0 fs/namei.c:4002
do_unlinkat+0x3b8/0x660 fs/namei.c:4065
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Freed by task 1:
__cache_free mm/slab.c:3503 [inline]
kfree+0xcc/0x210 mm/slab.c:3822
___sys_sendmsg+0x4ba/0x8e0 net/socket.c:2243
__sys_sendmsg net/socket.c:2265 [inline]
__do_sys_sendmsg net/socket.c:2274 [inline]
__se_sys_sendmsg net/socket.c:2272 [inline]
__x64_sys_sendmsg+0x132/0x220 net/socket.c:2272
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
The buggy address belongs to the object at ffff8880b4b83700
which belongs to the cache kmalloc-192 of size 192
The buggy address is located 184 bytes inside of
192-byte region [ffff8880b4b83700, ffff8880b4b837c0)
The buggy address belongs to the page:
page:ffffea0002d2e0c0 count:1 mapcount:0 mapping:ffff88813bff0040 index:0xffff8880b4b83600
flags: 0xfff00000000100(slab)
raw: 00fff00000000100 ffffea0002925ec8 ffffea0002d1b108 ffff88813bff0040
raw: ffff8880b4b83600 ffff8880b4b83000 0000000100000006 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8880b4b83680: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
ffff8880b4b83700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8880b4b83780: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff8880b4b83800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880b4b83880: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
==================================================================