==================================================================
BUG: KASAN: use-after-free in hfsplus_release_folio+0x554/0x5f0 fs/hfsplus/inode.c:92
Read of size 4 at addr ffff8880132b6038 by task syz-executor.2/12925
CPU: 1 PID: 12925 Comm: syz-executor.2 Not tainted 6.2.0-rc8-syzkaller-00083-g3ac88fa4605e #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:306 [inline]
print_report+0x15e/0x461 mm/kasan/report.c:417
kasan_report+0xbf/0x1f0 mm/kasan/report.c:517
hfsplus_release_folio+0x554/0x5f0 fs/hfsplus/inode.c:92
filemap_release_folio+0x13f/0x1b0 mm/filemap.c:3967
block_invalidate_folio+0x4dc/0x5e0 fs/buffer.c:1526
folio_invalidate mm/truncate.c:159 [inline]
truncate_cleanup_folio+0x31a/0x3f0 mm/truncate.c:179
truncate_inode_pages_range+0x238/0xec0 mm/truncate.c:368
hfsplus_evict_inode+0x1a/0xe0 fs/hfsplus/super.c:168
evict+0x2ed/0x6b0 fs/inode.c:664
iput_final fs/inode.c:1747 [inline]
iput.part.0+0x59b/0x880 fs/inode.c:1773
iput+0x5c/0x80 fs/inode.c:1763
hfsplus_put_super+0x274/0x3f0 fs/hfsplus/super.c:302
generic_shutdown_super+0x158/0x410 fs/super.c:492
kill_block_super+0x9b/0xf0 fs/super.c:1386
deactivate_locked_super+0x98/0x160 fs/super.c:332
deactivate_super+0xb1/0xd0 fs/super.c:363
cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1291
task_work_run+0x16f/0x270 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:203
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:296
do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6bf5c8d567
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 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:00007ffec55f25a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f6bf5c8d567
RDX: 00007ffec55f267b RSI: 000000000000000a RDI: 00007ffec55f2670
RBP: 00007ffec55f2670 R08: 00000000ffffffff R09: 00007ffec55f2440
R10: 00005555568f18b3 R11: 0000000000000246 R12: 00007f6bf5ce6b24
R13: 00007ffec55f3730 R14: 00005555568f1810 R15: 00007ffec55f3770
</TASK>
Allocated by task 16714:
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+0xa3/0xb0 mm/kasan/common.c:383
kmalloc include/linux/slab.h:580 [inline]
kzalloc include/linux/slab.h:720 [inline]
hfsplus_btree_open+0x52/0xcd0 fs/hfsplus/btree.c:142
hfsplus_fill_super+0xae5/0x1a30 fs/hfsplus/super.c:473
mount_bdev+0x351/0x410 fs/super.c:1359
legacy_get_tree+0x109/0x220 fs/fs_context.c:610
vfs_get_tree+0x8d/0x2f0 fs/super.c:1489
do_new_mount fs/namespace.c:3145 [inline]
path_mount+0x132a/0x1e20 fs/namespace.c:3475
do_mount fs/namespace.c:3488 [inline]
__do_sys_mount fs/namespace.c:3697 [inline]
__se_sys_mount fs/namespace.c:3674 [inline]
__x64_sys_mount+0x283/0x300 fs/namespace.c:3674
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
Freed by task 12925:
kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:523
____kasan_slab_free mm/kasan/common.c:236 [inline]
____kasan_slab_free+0x13b/0x1a0 mm/kasan/common.c:200
kasan_slab_free include/linux/kasan.h:177 [inline]
__cache_free mm/slab.c:3396 [inline]
__do_kmem_cache_free mm/slab.c:3582 [inline]
__kmem_cache_free+0xcd/0x3b0 mm/slab.c:3589
hfsplus_btree_close+0x1e5/0x380 fs/hfsplus/btree.c:280
hfsplus_put_super+0x224/0x3f0 fs/hfsplus/super.c:300
generic_shutdown_super+0x158/0x410 fs/super.c:492
kill_block_super+0x9b/0xf0 fs/super.c:1386
deactivate_locked_super+0x98/0x160 fs/super.c:332
deactivate_super+0xb1/0xd0 fs/super.c:363
cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1291
task_work_run+0x16f/0x270 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:203
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:296
do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
The buggy address belongs to the object at ffff8880132b6000
which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 56 bytes inside of
4096-byte region [ffff8880132b6000, ffff8880132b7000)
The buggy address belongs to the physical page:
page:ffffea00004cad80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x132b6
head:ffffea00004cad80 order:1 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffff888012440900 ffffea00009ea710 ffffea00006dca90
raw: 0000000000000000 ffff8880132b6000 0000000100000001 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0x3420c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_COMP|__GFP_HARDWALL|__GFP_THISNODE), pid 16714, tgid 16713 (syz-executor.2), ts 660952455062, free_ts 660294731357
prep_new_page mm/page_alloc.c:2531 [inline]
get_page_from_freelist+0x119c/0x2ce0 mm/page_alloc.c:4283
__alloc_pages+0x1cb/0x5b0 mm/page_alloc.c:5549
__alloc_pages_node include/linux/gfp.h:237 [inline]
kmem_getpages mm/slab.c:1363 [inline]
cache_grow_begin+0x94/0x390 mm/slab.c:2576
cache_alloc_refill+0x27f/0x380 mm/slab.c:2949
____cache_alloc mm/slab.c:3025 [inline]
____cache_alloc mm/slab.c:3008 [inline]
__do_cache_alloc mm/slab.c:3208 [inline]
slab_alloc_node mm/slab.c:3256 [inline]
__kmem_cache_alloc_node+0x44f/0x510 mm/slab.c:3546
kmalloc_trace+0x26/0x60 mm/slab_common.c:1062
kmalloc include/linux/slab.h:580 [inline]
kzalloc include/linux/slab.h:720 [inline]
hfsplus_btree_open+0x52/0xcd0 fs/hfsplus/btree.c:142
hfsplus_fill_super+0xae5/0x1a30 fs/hfsplus/super.c:473
mount_bdev+0x351/0x410 fs/super.c:1359
legacy_get_tree+0x109/0x220 fs/fs_context.c:610
vfs_get_tree+0x8d/0x2f0 fs/super.c:1489
do_new_mount fs/namespace.c:3145 [inline]
path_mount+0x132a/0x1e20 fs/namespace.c:3475
do_mount fs/namespace.c:3488 [inline]
__do_sys_mount fs/namespace.c:3697 [inline]
__se_sys_mount fs/namespace.c:3674 [inline]
__x64_sys_mount+0x283/0x300 fs/namespace.c:3674
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
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1446 [inline]
free_pcp_prepare+0x66a/0xc20 mm/page_alloc.c:1496
free_unref_page_prepare mm/page_alloc.c:3369 [inline]
free_unref_page+0x1d/0x490 mm/page_alloc.c:3464
slab_destroy mm/slab.c:1619 [inline]
slabs_destroy+0x85/0xc0 mm/slab.c:1639
cache_flusharray mm/slab.c:3367 [inline]
___cache_free+0x2ac/0x3d0 mm/slab.c:3430
qlink_free mm/kasan/quarantine.c:168 [inline]
qlist_free_all+0x4f/0x1a0 mm/kasan/quarantine.c:187
kasan_quarantine_reduce+0x192/0x220 mm/kasan/quarantine.c:294
__kasan_slab_alloc+0x63/0x90 mm/kasan/common.c:305
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slab.h:761 [inline]
slab_alloc_node mm/slab.c:3263 [inline]
slab_alloc mm/slab.c:3272 [inline]
__kmem_cache_alloc_lru mm/slab.c:3449 [inline]
kmem_cache_alloc+0x225/0x460 mm/slab.c:3458
vm_area_dup+0x7d/0x380 kernel/fork.c:466
dup_mmap+0x655/0x10b0 kernel/fork.c:643
dup_mm kernel/fork.c:1548 [inline]
copy_mm kernel/fork.c:1597 [inline]
copy_process+0x4423/0x7530 kernel/fork.c:2266
kernel_clone+0xeb/0x9f0 kernel/fork.c:2681
__do_sys_clone+0xba/0x100 kernel/fork.c:2822
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
Memory state around the buggy address:
ffff8880132b5f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8880132b5f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880132b6000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880132b6080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880132b6100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================