[Android 6.1] KASAN: use-after-free Write in steam_input_open

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 5c7d0d4f4a38 ANDROID: GKI: Update `kernel_aarch64_16k` bui..
git tree: android14-6.1
console+strace: https://syzkaller.appspot.com/x/log.txt?x=12f56a27980000
kernel config: https://syzkaller.appspot.com/x/.config?x=c9d90fcfd4c85d18
dashboard link: https://syzkaller.appspot.com/bug?extid=a0f81bbeee70d7ff08f8
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13538a80580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16f56a27980000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/47131c7fc742/disk-5c7d0d4f.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/c49b60750c0f/vmlinux-5c7d0d4f.xz
kernel image: https://storage.googleapis.com/syzbot-assets/aca257e6c6ae/bzImage-5c7d0d4f.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+a0f81b...@syzkaller.appspotmail.com

BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
BUG: KASAN: use-after-free in atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1779 [inline]
BUG: KASAN: use-after-free in __mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
BUG: KASAN: use-after-free in mutex_lock+0xa4/0x1e0 kernel/locking/mutex.c:295
Write of size 8 at addr ffff88810d6ea450 by task udevd/302

CPU: 1 PID: 302 Comm: udevd Not tainted 6.1.99-syzkaller-00076-g5c7d0d4f4a38 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:316 [inline]
print_report+0x158/0x4e0 mm/kasan/report.c:427
kasan_report+0x13c/0x170 mm/kasan/report.c:531
kasan_check_range+0x294/0x2a0 mm/kasan/generic.c:189
__kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1779 [inline]
__mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
mutex_lock+0xa4/0x1e0 kernel/locking/mutex.c:295
steam_input_open+0x91/0x1a0 drivers/hid/hid-steam.c:297
input_open_device+0x1a5/0x310 drivers/input/input.c:650
evdev_open_device drivers/input/evdev.c:400 [inline]
evdev_open+0x3df/0x620 drivers/input/evdev.c:487
chrdev_open+0x4f7/0x620 fs/char_dev.c:414
do_dentry_open+0x891/0x1250 fs/open.c:884
vfs_open+0x73/0x80 fs/open.c:1015
do_open fs/namei.c:3627 [inline]
path_openat+0x2532/0x2d60 fs/namei.c:3784
do_filp_open+0x230/0x480 fs/namei.c:3811
do_sys_openat2+0x151/0x870 fs/open.c:1341
do_sys_open fs/open.c:1357 [inline]
__do_sys_openat fs/open.c:1373 [inline]
__se_sys_openat fs/open.c:1368 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1368
x64_sys_call+0x6bf/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fdb8a5169a4
Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007fffa52597e0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdb8a5169a4
RDX: 0000000000080000 RSI: 000055818ab367c0 RDI: 00000000ffffff9c
RBP: 000055818ab367c0 R08: 000055818ab69e08 R09: fffffffffffffe98
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000
R13: 00007fffa52599a8 R14: 0000000000000000 R15: 000055818a264ed5
</TASK>

Allocated by task 24:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
____kasan_kmalloc mm/kasan/common.c:379 [inline]
__kasan_kmalloc+0x9c/0xb0 mm/kasan/common.c:388
kasan_kmalloc include/linux/kasan.h:212 [inline]
__do_kmalloc_node mm/slab_common.c:957 [inline]
__kmalloc_node_track_caller+0xb3/0x1e0 mm/slab_common.c:977
alloc_dr drivers/base/devres.c:116 [inline]
devm_kmalloc+0x55/0x180 drivers/base/devres.c:825
devm_kzalloc include/linux/device.h:211 [inline]
steam_probe+0x12e/0xbe0 drivers/hid/hid-steam.c:741
hid_device_probe+0x292/0x3a0 drivers/hid/hid-core.c:2624
really_probe+0x2b8/0x920 drivers/base/dd.c:639
__driver_probe_device+0x1a0/0x310 drivers/base/dd.c:808
driver_probe_device+0x54/0x3d0 drivers/base/dd.c:838
__device_attach_driver+0x2e3/0x490 drivers/base/dd.c:966
bus_for_each_drv+0x183/0x200 drivers/base/bus.c:427
__device_attach+0x312/0x510 drivers/base/dd.c:1038
device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087
bus_probe_device+0xbe/0x1e0 drivers/base/bus.c:487
device_add+0xb60/0xf10 drivers/base/core.c:3689
hid_add_device+0x3ad/0x510 drivers/hid/hid-core.c:2776
usbhid_probe+0xc1f/0xff0 drivers/hid/usbhid/hid-core.c:1424
usb_probe_interface+0x5b6/0xa90 drivers/usb/core/driver.c:397
really_probe+0x2b8/0x920 drivers/base/dd.c:639
__driver_probe_device+0x1a0/0x310 drivers/base/dd.c:808
driver_probe_device+0x54/0x3d0 drivers/base/dd.c:838
__device_attach_driver+0x2e3/0x490 drivers/base/dd.c:966
bus_for_each_drv+0x183/0x200 drivers/base/bus.c:427
__device_attach+0x312/0x510 drivers/base/dd.c:1038
device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087
bus_probe_device+0xbe/0x1e0 drivers/base/bus.c:487
device_add+0xb60/0xf10 drivers/base/core.c:3689
usb_set_configuration+0x190f/0x1e80 drivers/usb/core/message.c:2165
usb_generic_driver_probe+0x8b/0x150 drivers/usb/core/generic.c:238
usb_probe_device+0x144/0x260 drivers/usb/core/driver.c:294
really_probe+0x2b8/0x920 drivers/base/dd.c:639
__driver_probe_device+0x1a0/0x310 drivers/base/dd.c:808
driver_probe_device+0x54/0x3d0 drivers/base/dd.c:838
__device_attach_driver+0x2e3/0x490 drivers/base/dd.c:966
bus_for_each_drv+0x183/0x200 drivers/base/bus.c:427
__device_attach+0x312/0x510 drivers/base/dd.c:1038
device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087
bus_probe_device+0xbe/0x1e0 drivers/base/bus.c:487
device_add+0xb60/0xf10 drivers/base/core.c:3689
usb_new_device+0xf2f/0x1820 drivers/usb/core/hub.c:2645
hub_port_connect drivers/usb/core/hub.c:5554 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5694 [inline]
port_event drivers/usb/core/hub.c:5854 [inline]
hub_event+0x2db1/0x4830 drivers/usb/core/hub.c:5936
process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299
process_scheduled_works kernel/workqueue.c:2362 [inline]
worker_thread+0xd71/0x1260 kernel/workqueue.c:2448
kthread+0x26d/0x300 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

Freed by task 24:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
____kasan_slab_free+0x131/0x180 mm/kasan/common.c:241
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:249
kasan_slab_free include/linux/kasan.h:178 [inline]
slab_free_hook mm/slub.c:1745 [inline]
slab_free_freelist_hook mm/slub.c:1771 [inline]
slab_free mm/slub.c:3684 [inline]
__kmem_cache_free+0x218/0x3b0 mm/slub.c:3697
kfree+0x7a/0xf0 mm/slab_common.c:1009
release_nodes+0xf1/0x230 drivers/base/devres.c:503
devres_release_all+0x148/0x1a0 drivers/base/devres.c:532
device_unbind_cleanup drivers/base/dd.c:530 [inline]
__device_release_driver drivers/base/dd.c:1288 [inline]
device_release_driver_internal+0x5bb/0x870 drivers/base/dd.c:1309
device_release_driver+0x19/0x20 drivers/base/dd.c:1332
bus_remove_device+0x2fa/0x360 drivers/base/bus.c:529
device_del+0x663/0xe90 drivers/base/core.c:3877
hid_remove_device drivers/hid/hid-core.c:2824 [inline]
hid_destroy_device+0x68/0x110 drivers/hid/hid-core.c:2843
usbhid_disconnect+0x9e/0xc0 drivers/hid/usbhid/hid-core.c:1451
usb_unbind_interface+0x1fa/0x8c0 drivers/usb/core/driver.c:459
device_remove drivers/base/dd.c:550 [inline]
__device_release_driver drivers/base/dd.c:1283 [inline]
device_release_driver_internal+0x53e/0x870 drivers/base/dd.c:1309
device_release_driver+0x19/0x20 drivers/base/dd.c:1332
bus_remove_device+0x2fa/0x360 drivers/base/bus.c:529
device_del+0x663/0xe90 drivers/base/core.c:3877
usb_disable_device+0x380/0x720 drivers/usb/core/message.c:1414
usb_disconnect+0x32a/0x890 drivers/usb/core/hub.c:2300
hub_port_connect drivers/usb/core/hub.c:5393 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5694 [inline]
port_event drivers/usb/core/hub.c:5854 [inline]
hub_event+0x1ed8/0x4830 drivers/usb/core/hub.c:5936
process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299
process_scheduled_works kernel/workqueue.c:2362 [inline]
worker_thread+0xd71/0x1260 kernel/workqueue.c:2448
kthread+0x26d/0x300 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

The buggy address belongs to the object at ffff88810d6ea400
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 80 bytes inside of
512-byte region [ffff88810d6ea400, ffff88810d6ea600)

The buggy address belongs to the physical page:
page:ffffea000435ba00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10d6e8
head:ffffea000435ba00 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100042f00
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 71, tgid 71 (mount), ts 3866023065, free_ts 3861646833
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x213/0x220 mm/page_alloc.c:2590
prep_new_page+0x1b/0x110 mm/page_alloc.c:2597
get_page_from_freelist+0x27ea/0x2870 mm/page_alloc.c:4425
__alloc_pages+0x3a1/0x780 mm/page_alloc.c:5714
alloc_slab_page+0x6c/0xf0
allocate_slab mm/slub.c:1962 [inline]
new_slab+0x90/0x3e0 mm/slub.c:2015
___slab_alloc+0x6f9/0xb80 mm/slub.c:3203
__slab_alloc+0x5d/0xa0 mm/slub.c:3302
slab_alloc_node mm/slub.c:3387 [inline]
__kmem_cache_alloc_node+0x1af/0x250 mm/slub.c:3460
__do_kmalloc_node mm/slab_common.c:956 [inline]
__kmalloc+0xa3/0x1e0 mm/slab_common.c:970
kmalloc include/linux/slab.h:561 [inline]
kzalloc include/linux/slab.h:692 [inline]
__seq_open_private+0x28/0x1d0 fs/seq_file.c:637
seq_open_private+0x25/0x40 fs/seq_file.c:659
mounts_open_common+0x348/0x5c0 fs/proc_namespace.c:275
mounts_open+0x24/0x30 fs/proc_namespace.c:311
do_dentry_open+0x891/0x1250 fs/open.c:884
vfs_open+0x73/0x80 fs/open.c:1015
page last free stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
free_pages_prepare mm/page_alloc.c:1498 [inline]
free_pcp_prepare mm/page_alloc.c:1572 [inline]
free_unref_page_prepare+0x83d/0x850 mm/page_alloc.c:3498
free_unref_page+0xb2/0x5c0 mm/page_alloc.c:3594
free_the_page mm/page_alloc.c:798 [inline]
__free_pages+0x61/0xf0 mm/page_alloc.c:5803
free_pages+0x7c/0x90 mm/page_alloc.c:5814
__stack_depot_save+0x42c/0x480 lib/stackdepot.c:506
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x60/0x70 mm/kasan/common.c:52
kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
____kasan_kmalloc mm/kasan/common.c:379 [inline]
__kasan_kmalloc+0x9c/0xb0 mm/kasan/common.c:388
kasan_kmalloc include/linux/kasan.h:212 [inline]
kmalloc_trace+0x44/0xa0 mm/slab_common.c:1052
kmalloc include/linux/slab.h:556 [inline]
kmalloc_array include/linux/slab.h:607 [inline]
kcalloc include/linux/slab.h:639 [inline]
__list_lru_init+0xa6/0x370 mm/list_lru.c:571
alloc_super+0x698/0x800 fs/super.c:272
sget_fc+0x20f/0x660 fs/super.c:584
vfs_get_super fs/super.c:1197 [inline]
get_tree_nodev+0x2a/0x160 fs/super.c:1232
shmem_get_tree+0x1c/0x20 mm/shmem.c:3884
vfs_get_tree+0x88/0x290 fs/super.c:1564
do_new_mount+0x2ba/0xb30 fs/namespace.c:3051

Memory state around the buggy address:
ffff88810d6ea300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88810d6ea380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88810d6ea400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88810d6ea480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88810d6ea500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
hid 0003:28DE:1102.000F: No HID_FEATURE_REPORT submitted - nothing to read
hid 0003:28DE:1102.000F: No HID_FEATURE_REPORT submitted - nothing to read
hid 0003:28DE:1102.000F: No HID_FEATURE_REPORT submitted - nothing to read
hid 0003:28DE:1102.000F: No HID_FEATURE_REPORT submitted - nothing to read
hid 0003:28DE:1102.000F: No HID_FEATURE_REPORT submitted - nothing to read


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