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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 ffff888029e4c3e0 by task syz-executor.1/7960

CPU: 1 PID: 7960 Comm: syz-executor.1 Not tainted 6.9.0-rc5-syzkaller-00025-ga2c63a3f3d68 #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_attr+0x27e/0x310 fs/hfsplus/attributes.c:345
 __hfsplus_setxattr+0x66f/0x2180 fs/hfsplus/xattr.c:342
 hfsplus_setxattr+0x10c/0x180 fs/hfsplus/xattr.c:434
 __vfs_setxattr+0x173/0x1e0 fs/xattr.c:200
 __vfs_setxattr_noperm+0x127/0x5e0 fs/xattr.c:234
 __vfs_setxattr_locked+0x182/0x260 fs/xattr.c:295
 vfs_setxattr+0x146/0x350 fs/xattr.c:321
 do_setxattr+0x146/0x170 fs/xattr.c:629
 setxattr+0x15d/0x180 fs/xattr.c:652
 path_setxattr+0x179/0x1e0 fs/xattr.c:671
 __do_sys_setxattr fs/xattr.c:687 [inline]
 __se_sys_setxattr fs/xattr.c:683 [inline]
 __x64_sys_setxattr+0xc4/0x160 fs/xattr.c:683
 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: 0033:0x7fb58987dea9
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:00007fb58a67c0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007fb5899ac120 RCX: 00007fb58987dea9
RDX: 00000000200002c0 RSI: 0000000020000140 RDI: 0000000020000300
RBP: 00007fb5898ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000700 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fb5899ac120 R15: 00007ffd8edadba8
 </TASK>

Allocated by task 7955:
 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:3966 [inline]
 __kmalloc+0x1f9/0x440 mm/slub.c:3979
 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+0xe6/0x190 fs/hfsplus/attributes.c:153
 hfsplus_attr_exists+0x14d/0x200 fs/hfsplus/attributes.c:182
 __hfsplus_setxattr+0x4c6/0x2180 fs/hfsplus/xattr.c:336
 hfsplus_setxattr+0x10c/0x180 fs/hfsplus/xattr.c:434
 __vfs_setxattr+0x173/0x1e0 fs/xattr.c:200
 __vfs_setxattr_noperm+0x127/0x5e0 fs/xattr.c:234
 __vfs_setxattr_locked+0x182/0x260 fs/xattr.c:295
 vfs_setxattr+0x146/0x350 fs/xattr.c:321
 do_setxattr+0x146/0x170 fs/xattr.c:629
 setxattr+0x15d/0x180 fs/xattr.c:652
 path_setxattr+0x179/0x1e0 fs/xattr.c:671
 __do_sys_setxattr fs/xattr.c:687 [inline]
 __se_sys_setxattr fs/xattr.c:683 [inline]
 __x64_sys_setxattr+0xc4/0x160 fs/xattr.c:683
 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 ffff888029e4c300
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 72 bytes to the right of
 allocated 152-byte region [ffff888029e4c300, ffff888029e4c398)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x29e4c
ksm flags: 0xfff80000000800(slab|node=0|zone=1|lastcpupid=0xfff)
page_type: 0xffffffff()
raw: 00fff80000000800 ffff888015042a00 ffffea0000942780 dead000000000003
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 -1821086884 (swapper/0), ts 1, free_ts 0
 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:2175 [inline]
 allocate_slab mm/slub.c:2338 [inline]
 new_slab+0xcc/0x3a0 mm/slub.c:2391
 ___slab_alloc+0x66d/0x1790 mm/slub.c:3525
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3610
 __slab_alloc_node mm/slub.c:3663 [inline]
 slab_alloc_node mm/slub.c:3835 [inline]
 kmalloc_trace+0x2fb/0x330 mm/slub.c:3992
 kmalloc include/linux/slab.h:628 [inline]
 kzalloc include/linux/slab.h:749 [inline]
 call_usermodehelper_setup+0x9a/0x340 kernel/umh.c:363
 kobject_uevent_env+0x14f1/0x1810 lib/kobject_uevent.c:613
 kernel_add_sysfs_param kernel/params.c:821 [inline]
 param_sysfs_builtin kernel/params.c:856 [inline]
 param_sysfs_builtin_init+0x32b/0x460 kernel/params.c:990
 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_owner free stack trace missing

Memory state around the buggy address:
 ffff888029e4c280: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888029e4c300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888029e4c380: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                       ^
 ffff888029e4c400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888029e4c480: 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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