Re: [syzbot] [input?] [usb?] KASAN: slab-use-after-free Read in steam_input_open

From: syzbot
Date: Sun Feb 23 2025 - 04:17:53 EST

Next message: Edward Adam Davis: "Re: [syzbot] [input?] [usb?] KASAN: slab-use-after-free Read in steam_input_open"
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In reply to: Hillf Danton: "Re: [syzbot] [input?] [usb?] KASAN: slab-use-after-free Read in steam_input_open"
Next in thread: Edward Adam Davis: "Re: [syzbot] [input?] [usb?] KASAN: slab-use-after-free Read in steam_input_open"
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Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
KASAN: slab-use-after-free Read in steam_input_open

==================================================================
BUG: KASAN: slab-use-after-free in steam_input_open+0x14d/0x160 drivers/hid/hid-steam.c:604
Read of size 8 at addr ffff8881063ff130 by task udevd/6832

CPU: 0 UID: 0 PID: 6832 Comm: udevd Not tainted 6.14.0-rc3-syzkaller-00295-g27102b38b8ca-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:408 [inline]
print_report+0xc3/0x670 mm/kasan/report.c:521
kasan_report+0xd9/0x110 mm/kasan/report.c:634
steam_input_open+0x14d/0x160 drivers/hid/hid-steam.c:604
input_open_device+0x230/0x390 drivers/input/input.c:600
evdev_open_device drivers/input/evdev.c:391 [inline]
evdev_open+0x52d/0x690 drivers/input/evdev.c:478
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6cb/0x1390 fs/open.c:956
vfs_open+0x82/0x3f0 fs/open.c:1086
do_open fs/namei.c:3830 [inline]
path_openat+0x1e88/0x2d80 fs/namei.c:3989
do_filp_open+0x20c/0x470 fs/namei.c:4016
do_sys_openat2+0x17a/0x1e0 fs/open.c:1428
do_sys_open fs/open.c:1443 [inline]
__do_sys_openat fs/open.c:1459 [inline]
__se_sys_openat fs/open.c:1454 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1454
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb8155fa9a4
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:00007fffe256d960 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb8155fa9a4
RDX: 0000000000080000 RSI: 000055674c828210 RDI: 00000000ffffff9c
RBP: 000055674c828210 R08: 000055674c851628 R09: fffffffffffffe98
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000
R13: 00007fffe256db28 R14: 0000000000000000 R15: 0000556737a63ed5
</TASK>

Allocated by task 24:
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:377 [inline]
__kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__do_kmalloc_node mm/slub.c:4294 [inline]
__kmalloc_node_track_caller_noprof+0x20b/0x4c0 mm/slub.c:4313
alloc_dr drivers/base/devres.c:119 [inline]
devm_kmalloc+0xa5/0x260 drivers/base/devres.c:843
devm_kzalloc include/linux/device.h:328 [inline]
steam_probe+0x132/0x1060 drivers/hid/hid-steam.c:1248
__hid_device_probe drivers/hid/hid-core.c:2713 [inline]
hid_device_probe+0x349/0x700 drivers/hid/hid-core.c:2750
call_driver_probe drivers/base/dd.c:579 [inline]
really_probe+0x23e/0xa90 drivers/base/dd.c:658
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:462
__device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030
bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537
device_add+0x114b/0x1a70 drivers/base/core.c:3665
hid_add_device+0x374/0xa60 drivers/hid/hid-core.c:2896
usbhid_probe+0xd32/0x1400 drivers/hid/usbhid/hid-core.c:1431
usb_probe_interface+0x300/0x9c0 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:579 [inline]
really_probe+0x23e/0xa90 drivers/base/dd.c:658
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:462
__device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030
bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537
device_add+0x114b/0x1a70 drivers/base/core.c:3665
usb_set_configuration+0x10cb/0x1c50 drivers/usb/core/message.c:2210
usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:250
usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:291
call_driver_probe drivers/base/dd.c:579 [inline]
really_probe+0x23e/0xa90 drivers/base/dd.c:658
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:462
__device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030
bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537
device_add+0x114b/0x1a70 drivers/base/core.c:3665
usb_new_device+0xd09/0x1a20 drivers/usb/core/hub.c:2663
hub_port_connect drivers/usb/core/hub.c:5533 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
port_event drivers/usb/core/hub.c:5833 [inline]
hub_event+0x2e58/0x4f40 drivers/usb/core/hub.c:5915
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
process_scheduled_works kernel/workqueue.c:3317 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
kthread+0x3af/0x750 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Freed by task 24:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x37/0x50 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2353 [inline]
slab_free mm/slub.c:4609 [inline]
kfree+0x294/0x480 mm/slub.c:4757
release_nodes+0x11e/0x240 drivers/base/devres.c:506
devres_release_group+0x1be/0x2a0 drivers/base/devres.c:689
hid_device_remove+0x107/0x260 drivers/hid/hid-core.c:2774
device_remove+0xc8/0x170 drivers/base/dd.c:567
__device_release_driver drivers/base/dd.c:1273 [inline]
device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296
bus_remove_device+0x22f/0x420 drivers/base/bus.c:579
device_del+0x396/0x9f0 drivers/base/core.c:3854
hid_remove_device drivers/hid/hid-core.c:2953 [inline]
hid_destroy_device+0x19c/0x240 drivers/hid/hid-core.c:2975
usbhid_disconnect+0xa0/0xe0 drivers/hid/usbhid/hid-core.c:1458
usb_unbind_interface+0x1e2/0x960 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:569 [inline]
device_remove+0x122/0x170 drivers/base/dd.c:561
__device_release_driver drivers/base/dd.c:1273 [inline]
device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296
bus_remove_device+0x22f/0x420 drivers/base/bus.c:579
device_del+0x396/0x9f0 drivers/base/core.c:3854
usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1418
usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2316
hub_port_connect drivers/usb/core/hub.c:5373 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
port_event drivers/usb/core/hub.c:5833 [inline]
hub_event+0x1bed/0x4f40 drivers/usb/core/hub.c:5915
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
process_scheduled_works kernel/workqueue.c:3317 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
kthread+0x3af/0x750 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Last potentially related work creation:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_record_aux_stack+0x9b/0xb0 mm/kasan/generic.c:548
insert_work+0x36/0x230 kernel/workqueue.c:2183
__queue_work+0x97e/0x1080 kernel/workqueue.c:2339
queue_work_on+0x11a/0x140 kernel/workqueue.c:2390
hid_hw_close+0xaf/0xe0 drivers/hid/hid-core.c:2415
drop_ref+0x186/0x390 drivers/hid/hidraw.c:360
hidraw_release+0x3e6/0x560 drivers/hid/hidraw.c:384
__fput+0x3ff/0xb70 fs/file_table.c:464
task_work_run+0x14e/0x250 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x24e/0x260 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f

Second to last potentially related work creation:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_record_aux_stack+0x9b/0xb0 mm/kasan/generic.c:548
insert_work+0x36/0x230 kernel/workqueue.c:2183
__queue_work+0x97e/0x1080 kernel/workqueue.c:2339
queue_work_on+0x11a/0x140 kernel/workqueue.c:2390
queue_work include/linux/workqueue.h:662 [inline]
schedule_work include/linux/workqueue.h:723 [inline]
steam_client_ll_open+0xab/0xf0 drivers/hid/hid-steam.c:1153
hid_hw_open+0xe2/0x170 drivers/hid/hid-core.c:2392
hidraw_open+0x274/0x7e0 drivers/hid/hidraw.c:308
chrdev_open+0x237/0x6a0 fs/char_dev.c:414
do_dentry_open+0x6cb/0x1390 fs/open.c:956
vfs_open+0x82/0x3f0 fs/open.c:1086
do_open fs/namei.c:3830 [inline]
path_openat+0x1e88/0x2d80 fs/namei.c:3989
do_filp_open+0x20c/0x470 fs/namei.c:4016
do_sys_openat2+0x17a/0x1e0 fs/open.c:1428
do_sys_open fs/open.c:1443 [inline]
__do_sys_openat fs/open.c:1459 [inline]
__se_sys_openat fs/open.c:1454 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1454
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff8881063ff000
which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 304 bytes inside of
freed 1024-byte region [ffff8881063ff000, ffff8881063ff400)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8881063ff800 pfn:0x1063f8
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
anon flags: 0x200000000000040(head|node=0|zone=2)
page_type: f5(slab)
raw: 0200000000000040 ffff888100041dc0 ffffea00044cca00 dead000000000003
raw: ffff8881063ff800 000000000010000e 00000000f5000000 0000000000000000
head: 0200000000000040 ffff888100041dc0 ffffea00044cca00 dead000000000003
head: ffff8881063ff800 000000000010000e 00000000f5000000 0000000000000000
head: 0200000000000003 ffffea000418fe01 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x252800(GFP_NOWAIT|__GFP_NORETRY|__GFP_COMP|__GFP_THISNODE), pid 1, tgid 1 (swapper/0), ts 7397750427, free_ts 0
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x181/0x1b0 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0xe76/0x2b90 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x21c/0x2290 mm/page_alloc.c:4739
alloc_slab_page mm/slub.c:2425 [inline]
allocate_slab mm/slub.c:2587 [inline]
new_slab+0x94/0x330 mm/slub.c:2640
___slab_alloc+0xc41/0x1670 mm/slub.c:3826
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3916
__slab_alloc_node mm/slub.c:3991 [inline]
slab_alloc_node mm/slub.c:4152 [inline]
__kmalloc_cache_node_noprof+0x21b/0x3f0 mm/slub.c:4333
kmalloc_node_noprof include/linux/slab.h:924 [inline]
blk_mq_alloc_hctx block/blk-mq.c:3945 [inline]
blk_mq_alloc_and_init_hctx+0x639/0x11b0 block/blk-mq.c:4448
blk_mq_realloc_hw_ctxs+0x8e0/0xbe0 block/blk-mq.c:4481
blk_mq_init_allocated_queue+0x39e/0x11f0 block/blk-mq.c:4535
blk_mq_alloc_queue+0x1c3/0x290 block/blk-mq.c:4348
scsi_alloc_sdev+0x890/0xd80 drivers/scsi/scsi_scan.c:338
scsi_probe_and_add_lun+0x525/0x7b0 drivers/scsi/scsi_scan.c:1209
__scsi_scan_target+0x1e6/0x4e0 drivers/scsi/scsi_scan.c:1774
scsi_scan_channel drivers/scsi/scsi_scan.c:1862 [inline]
scsi_scan_channel+0x149/0x1e0 drivers/scsi/scsi_scan.c:1838
scsi_scan_host_selected+0x2ae/0x370 drivers/scsi/scsi_scan.c:1891
page_owner free stack trace missing

Memory state around the buggy address:
ffff8881063ff000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8881063ff080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881063ff100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8881063ff180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8881063ff200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

Tested on:

commit: 27102b38 Merge tag 'v6.14-rc3-smb3-client-fix-part2' o..
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=17cec7a4580000
kernel config: https://syzkaller.appspot.com/x/.config?x=28127f006c1c31ee
dashboard link: https://syzkaller.appspot.com/bug?extid=0154da2d403396b2bd59
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=158553b8580000

Next message: Edward Adam Davis: "Re: [syzbot] [input?] [usb?] KASAN: slab-use-after-free Read in steam_input_open"
Previous message: Ingo Molnar: "Re: [PATCH v8] sched: Consolidate cpufreq updates"
In reply to: Hillf Danton: "Re: [syzbot] [input?] [usb?] KASAN: slab-use-after-free Read in steam_input_open"
Next in thread: Edward Adam Davis: "Re: [syzbot] [input?] [usb?] KASAN: slab-use-after-free Read in steam_input_open"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]