[syzbot] [input?] [usb?] KASAN: slab-out-of-bounds Read in cougar_report_fixup

From: syzbot
Date: Tue Jul 30 2024 - 16:41:00 EST

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Hello,

syzbot found the following issue on:

HEAD commit: 1722389b0d86 Merge tag 'net-6.11-rc1' of git://git.kernel...
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
console output: https://syzkaller.appspot.com/x/log.txt?x=153cbebd980000
kernel config: https://syzkaller.appspot.com/x/.config?x=e3044dca4d5f6dbe
dashboard link: https://syzkaller.appspot.com/bug?extid=24c0361074799d02c452
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10aef9a1980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11d32623980000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/78a5695ed7e2/disk-1722389b.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1507b4c5000d/vmlinux-1722389b.xz
kernel image: https://storage.googleapis.com/syzbot-assets/449aa9e94d6b/bzImage-1722389b.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+24c0361074799d02c452@xxxxxxxxxxxxxxxxxxxxxxxxx

usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has invalid wMaxPacketSize 0
usb 1-1: New USB device found, idVendor=060b, idProduct=700a, bcdDevice= 0.00
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??
==================================================================
BUG: KASAN: slab-out-of-bounds in cougar_report_fixup+0x1a1/0x1e0 drivers/hid/hid-cougar.c:109
Read of size 1 at addr ffff88810e2895e2 by task kworker/0:1/9

CPU: 0 UID: 0 PID: 9 Comm: kworker/0:1 Not tainted 6.10.0-syzkaller-g1722389b0d86 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: usb_hub_wq hub_event
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
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
cougar_report_fixup+0x1a1/0x1e0 drivers/hid/hid-cougar.c:109
hid_open_report+0x1b3/0x7c0 drivers/hid/hid-core.c:1235
hid_parse include/linux/hid.h:1118 [inline]
cougar_probe+0x78/0x840 drivers/hid/hid-cougar.c:206
__hid_device_probe drivers/hid/hid-core.c:2674 [inline]
hid_device_probe+0x2eb/0x490 drivers/hid/hid-core.c:2711
call_driver_probe drivers/base/dd.c:578 [inline]
really_probe+0x23e/0xa90 drivers/base/dd.c:657
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:799
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:957
bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
__device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029
bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
device_add+0x114b/0x1a70 drivers/base/core.c:3679
hid_add_device+0x37f/0xa70 drivers/hid/hid-core.c:2857
usbhid_probe+0xd3b/0x1410 drivers/hid/usbhid/hid-core.c:1431
usb_probe_interface+0x309/0x9d0 drivers/usb/core/driver.c:399
call_driver_probe drivers/base/dd.c:578 [inline]
really_probe+0x23e/0xa90 drivers/base/dd.c:657
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:799
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:957
bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
__device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029
bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
device_add+0x114b/0x1a70 drivers/base/core.c:3679
usb_set_configuration+0x10cb/0x1c50 drivers/usb/core/message.c:2210
usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:254
usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:294
call_driver_probe drivers/base/dd.c:578 [inline]
really_probe+0x23e/0xa90 drivers/base/dd.c:657
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:799
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:957
bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
__device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029
bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
device_add+0x114b/0x1a70 drivers/base/core.c:3679
usb_new_device+0xd90/0x1a10 drivers/usb/core/hub.c:2651
hub_port_connect drivers/usb/core/hub.c:5521 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
port_event drivers/usb/core/hub.c:5821 [inline]
hub_event+0x2e66/0x4f50 drivers/usb/core/hub.c:5903
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>

Allocated by task 9:
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+0x8f/0xa0 mm/kasan/common.c:387
kasan_kmalloc include/linux/kasan.h:211 [inline]
__do_kmalloc_node mm/slub.c:4158 [inline]
__kmalloc_node_track_caller_noprof+0x1ff/0x3e0 mm/slub.c:4177
kmemdup_noprof+0x29/0x60 mm/util.c:133
kmemdup_noprof include/linux/fortify-string.h:753 [inline]
hid_open_report+0x133/0x7c0 drivers/hid/hid-core.c:1230
hid_parse include/linux/hid.h:1118 [inline]
cougar_probe+0x78/0x840 drivers/hid/hid-cougar.c:206
__hid_device_probe drivers/hid/hid-core.c:2674 [inline]
hid_device_probe+0x2eb/0x490 drivers/hid/hid-core.c:2711
call_driver_probe drivers/base/dd.c:578 [inline]
really_probe+0x23e/0xa90 drivers/base/dd.c:657
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:799
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:957
bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
__device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029
bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
device_add+0x114b/0x1a70 drivers/base/core.c:3679
hid_add_device+0x37f/0xa70 drivers/hid/hid-core.c:2857
usbhid_probe+0xd3b/0x1410 drivers/hid/usbhid/hid-core.c:1431
usb_probe_interface+0x309/0x9d0 drivers/usb/core/driver.c:399
call_driver_probe drivers/base/dd.c:578 [inline]
really_probe+0x23e/0xa90 drivers/base/dd.c:657
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:799
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:957
bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
__device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029
bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
device_add+0x114b/0x1a70 drivers/base/core.c:3679
usb_set_configuration+0x10cb/0x1c50 drivers/usb/core/message.c:2210
usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:254
usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:294
call_driver_probe drivers/base/dd.c:578 [inline]
really_probe+0x23e/0xa90 drivers/base/dd.c:657
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:799
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:957
bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
__device_attach+0x1e8/0x4b0 drivers/base/dd.c:1029
bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
device_add+0x114b/0x1a70 drivers/base/core.c:3679
usb_new_device+0xd90/0x1a10 drivers/usb/core/hub.c:2651
hub_port_connect drivers/usb/core/hub.c:5521 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
port_event drivers/usb/core/hub.c:5821 [inline]
hub_event+0x2e66/0x4f50 drivers/usb/core/hub.c:5903
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

The buggy address belongs to the object at ffff88810e2895e0
which belongs to the cache kmalloc-8 of size 8
The buggy address is located 1 bytes to the right of
allocated 1-byte region [ffff88810e2895e0, ffff88810e2895e1)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10e289
flags: 0x200000000000000(node=0|zone=2)
page_type: 0xfdffffff(slab)
raw: 0200000000000000 ffff888100041500 ffffea000439a880 0000000000000002
raw: 0000000000000000 0000000080800080 00000001fdffffff 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 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 1, tgid 1 (swapper/0), ts 6939675028, free_ts 6856482901
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1493
prep_new_page mm/page_alloc.c:1501 [inline]
get_page_from_freelist+0x1311/0x25f0 mm/page_alloc.c:3438
__alloc_pages_noprof+0x21e/0x2290 mm/page_alloc.c:4696
__alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
alloc_slab_page+0x4e/0xf0 mm/slub.c:2321
allocate_slab mm/slub.c:2484 [inline]
new_slab+0x84/0x260 mm/slub.c:2537
___slab_alloc+0xdac/0x1870 mm/slub.c:3723
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3813
__slab_alloc_node mm/slub.c:3866 [inline]
slab_alloc_node mm/slub.c:4025 [inline]
__do_kmalloc_node mm/slub.c:4157 [inline]
__kmalloc_node_track_caller_noprof+0x14e/0x3e0 mm/slub.c:4177
kvasprintf+0xbd/0x160 lib/kasprintf.c:25
kvasprintf_const+0x66/0x1a0 lib/kasprintf.c:49
kobject_set_name_vargs+0x5a/0x140 lib/kobject.c:274
dev_set_name+0xc8/0x100 drivers/base/core.c:3482
usb_alloc_dev+0xb4c/0xdc0 drivers/usb/core/usb.c:696
usb_add_hcd+0x477/0x16a0 drivers/usb/core/hcd.c:2863
dummy_hcd_probe+0x15c/0x380 drivers/usb/gadget/udc/dummy_hcd.c:2682
platform_probe+0xff/0x1f0 drivers/base/platform.c:1404
page last free pid 36 tgid 36 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1094 [inline]
free_unref_page+0x698/0xce0 mm/page_alloc.c:2608
vfree+0x181/0x7a0 mm/vmalloc.c:3364
delayed_vfree_work+0x56/0x70 mm/vmalloc.c:3285
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
ffff88810e289480: fa fc fc fc 00 fc fc fc fa fc fc fc 00 fc fc fc
ffff88810e289500: 00 fc fc fc 00 fc fc fc 00 fc fc fc 00 fc fc fc
>ffff88810e289580: fa fc fc fc 00 fc fc fc 01 fc fc fc 01 fc fc fc
^
ffff88810e289600: fa fc fc fc fa fc fc fc 06 fc fc fc 06 fc fc fc
ffff88810e289680: fa fc fc fc 06 fc fc fc 06 fc fc fc 00 fc fc fc
==================================================================

---
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Next message: Peter Zijlstra: "Re: [PATCH] perf/core: Optimize event reschedule for a PMU"
Previous message: Andrew Lunn: "Re: [net-next v3 14/15] net: marvell: Convert tasklet API to new bottom half workqueue mechanism"
Next in thread: syzbot: "Re: [syzbot] [PATCH] usb: fix slab-out-of-bounds Read in cougar_report_fixup"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]