[syzbot] [usb?] usb-testing boot error: KASAN: slab-out-of-bounds Write in vhci_setup

From: syzbot
Date: Thu Oct 12 2023 - 02:38:55 EST

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Hello,

syzbot found the following issue on:

HEAD commit: efa33cd89c8a USB: typec: tps6598x: Add status trace for tp..
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=162614de680000
kernel config: https://syzkaller.appspot.com/x/.config?x=a5e01246f94ceed9
dashboard link: https://syzkaller.appspot.com/bug?extid=e0dbc33630a092ccf033
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/d5a3eaf3019b/disk-efa33cd8.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/32ddfa7a7357/vmlinux-efa33cd8.xz
kernel image: https://storage.googleapis.com/syzbot-assets/e9525e3de36f/bzImage-efa33cd8.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+e0dbc33630a092ccf033@xxxxxxxxxxxxxxxxxxxxxxxxx

usb usb4: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.06
usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb4: Product: Dummy host controller
usb usb4: Manufacturer: Linux 6.6.0-rc4-syzkaller-00079-gefa33cd89c8a dummy_hcd
usb usb4: SerialNumber: dummy_hcd.3
hub 4-0:1.0: USB hub found
hub 4-0:1.0: 1 port detected
dummy_hcd dummy_hcd.4: USB Host+Gadget Emulator, driver 02 May 2005
dummy_hcd dummy_hcd.4: Dummy host controller
dummy_hcd dummy_hcd.4: new USB bus registered, assigned bus number 5
usb usb5: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.06
usb usb5: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb5: Product: Dummy host controller
usb usb5: Manufacturer: Linux 6.6.0-rc4-syzkaller-00079-gefa33cd89c8a dummy_hcd
usb usb5: SerialNumber: dummy_hcd.4
hub 5-0:1.0: USB hub found
hub 5-0:1.0: 1 port detected
dummy_hcd dummy_hcd.5: USB Host+Gadget Emulator, driver 02 May 2005
dummy_hcd dummy_hcd.5: Dummy host controller
dummy_hcd dummy_hcd.5: new USB bus registered, assigned bus number 6
usb usb6: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.06
usb usb6: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb6: Product: Dummy host controller
usb usb6: Manufacturer: Linux 6.6.0-rc4-syzkaller-00079-gefa33cd89c8a dummy_hcd
usb usb6: SerialNumber: dummy_hcd.5
hub 6-0:1.0: USB hub found
hub 6-0:1.0: 1 port detected
dummy_hcd dummy_hcd.6: USB Host+Gadget Emulator, driver 02 May 2005
dummy_hcd dummy_hcd.6: Dummy host controller
dummy_hcd dummy_hcd.6: new USB bus registered, assigned bus number 7
usb usb7: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.06
usb usb7: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb7: Product: Dummy host controller
usb usb7: Manufacturer: Linux 6.6.0-rc4-syzkaller-00079-gefa33cd89c8a dummy_hcd
usb usb7: SerialNumber: dummy_hcd.6
hub 7-0:1.0: USB hub found
hub 7-0:1.0: 1 port detected
dummy_hcd dummy_hcd.7: USB Host+Gadget Emulator, driver 02 May 2005
dummy_hcd dummy_hcd.7: Dummy host controller
dummy_hcd dummy_hcd.7: new USB bus registered, assigned bus number 8
usb usb8: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.06
usb usb8: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb8: Product: Dummy host controller
usb usb8: Manufacturer: Linux 6.6.0-rc4-syzkaller-00079-gefa33cd89c8a dummy_hcd
usb usb8: SerialNumber: dummy_hcd.7
hub 8-0:1.0: USB hub found
hub 8-0:1.0: 1 port detected
vhci_hcd vhci_hcd.0: USB/IP Virtual Host Controller
vhci_hcd vhci_hcd.0: new USB bus registered, assigned bus number 9
==================================================================
BUG: KASAN: slab-out-of-bounds in vhci_setup+0x2d3/0x340 drivers/usb/usbip/vhci_hcd.c:1145
Write of size 8 at addr ffff888105f04d18 by task swapper/0/1

CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.6.0-rc4-syzkaller-00079-gefa33cd89c8a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:364 [inline]
print_report+0xc4/0x620 mm/kasan/report.c:475
kasan_report+0xda/0x110 mm/kasan/report.c:588
vhci_setup+0x2d3/0x340 drivers/usb/usbip/vhci_hcd.c:1145
usb_add_hcd+0x5bc/0x1770 drivers/usb/core/hcd.c:2911
vhci_hcd_probe+0x12c/0x460 drivers/usb/usbip/vhci_hcd.c:1363
platform_probe+0xff/0x1e0 drivers/base/platform.c:1404
call_driver_probe drivers/base/dd.c:579 [inline]
really_probe+0x234/0xc90 drivers/base/dd.c:658
__driver_probe_device+0x1de/0x4b0 drivers/base/dd.c:800
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:830
__device_attach_driver+0x1d4/0x300 drivers/base/dd.c:958
bus_for_each_drv+0x157/0x1d0 drivers/base/bus.c:457
__device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030
bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532
device_add+0x117e/0x1aa0 drivers/base/core.c:3624
platform_device_add+0x36d/0x840 drivers/base/platform.c:717
platform_device_register_full+0x3ec/0x550 drivers/base/platform.c:844
vhci_hcd_init+0x1ad/0x360 drivers/usb/usbip/vhci_hcd.c:1532
do_one_initcall+0x117/0x630 init/main.c:1232
do_initcall_level init/main.c:1294 [inline]
do_initcalls init/main.c:1310 [inline]
do_basic_setup init/main.c:1329 [inline]
kernel_init_freeable+0x5bd/0x8f0 init/main.c:1547
kernel_init+0x1c/0x2a0 init/main.c:1437
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
</TASK>

Allocated by task 1:
kasan_save_stack+0x33/0x50 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+0x87/0x90 mm/kasan/common.c:383
kasan_kmalloc include/linux/kasan.h:198 [inline]
__do_kmalloc_node mm/slab_common.c:1023 [inline]
__kmalloc_node_track_caller+0x61/0x100 mm/slab_common.c:1043
kvasprintf+0xbd/0x150 lib/kasprintf.c:25
kvasprintf_const+0x66/0x190 lib/kasprintf.c:49
kobject_set_name_vargs+0x5a/0x130 lib/kobject.c:272
device_create_groups_vargs+0x1b1/0x270 drivers/base/core.c:4307
device_create+0xe9/0x120 drivers/base/core.c:4350
mon_bin_add+0xba/0x160 drivers/usb/mon/mon_bin.c:1366
mon_bus_init+0x18e/0x320 drivers/usb/mon/mon_main.c:291
mon_bus_add drivers/usb/mon/mon_main.c:188 [inline]
mon_notify+0x32e/0x490 drivers/usb/mon/mon_main.c:219
notifier_call_chain+0xb6/0x3b0 kernel/notifier.c:93
blocking_notifier_call_chain kernel/notifier.c:388 [inline]
blocking_notifier_call_chain+0x69/0x90 kernel/notifier.c:376
usb_register_bus drivers/usb/core/hcd.c:910 [inline]
usb_add_hcd+0x34d/0x1770 drivers/usb/core/hcd.c:2852
vhci_hcd_probe+0x12c/0x460 drivers/usb/usbip/vhci_hcd.c:1363
platform_probe+0xff/0x1e0 drivers/base/platform.c:1404
call_driver_probe drivers/base/dd.c:579 [inline]
really_probe+0x234/0xc90 drivers/base/dd.c:658
__driver_probe_device+0x1de/0x4b0 drivers/base/dd.c:800
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:830
__device_attach_driver+0x1d4/0x300 drivers/base/dd.c:958
bus_for_each_drv+0x157/0x1d0 drivers/base/bus.c:457
__device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030
bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532
device_add+0x117e/0x1aa0 drivers/base/core.c:3624
platform_device_add+0x36d/0x840 drivers/base/platform.c:717
platform_device_register_full+0x3ec/0x550 drivers/base/platform.c:844
vhci_hcd_init+0x1ad/0x360 drivers/usb/usbip/vhci_hcd.c:1532
do_one_initcall+0x117/0x630 init/main.c:1232
do_initcall_level init/main.c:1294 [inline]
do_initcalls init/main.c:1310 [inline]
do_basic_setup init/main.c:1329 [inline]
kernel_init_freeable+0x5bd/0x8f0 init/main.c:1547
kernel_init+0x1c/0x2a0 init/main.c:1437
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304

The buggy address belongs to the object at ffff888105f04cf8
which belongs to the cache kmalloc-8 of size 8
The buggy address is located 24 bytes to the right of
allocated 8-byte region [ffff888105f04cf8, ffff888105f04d00)

The buggy address belongs to the physical page:
page:ffffea000417c100 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x105f04
flags: 0x200000000000800(slab|node=0|zone=2)
page_type: 0xffffffff()
raw: 0200000000000800 ffff888100041280 dead000000000122 0000000000000000
raw: 0000000000000000 0000000080660066 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 1 (swapper/0), ts 9597611518, free_ts 9330208953
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x2cf/0x340 mm/page_alloc.c:1536
prep_new_page mm/page_alloc.c:1543 [inline]
get_page_from_freelist+0x10e1/0x2fd0 mm/page_alloc.c:3170
__alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4426
alloc_page_interleave+0x1e/0x230 mm/mempolicy.c:2130
alloc_pages+0x22a/0x270 mm/mempolicy.c:2292
alloc_slab_page mm/slub.c:1870 [inline]
allocate_slab+0x251/0x380 mm/slub.c:2017
new_slab mm/slub.c:2070 [inline]
___slab_alloc+0x8c7/0x1580 mm/slub.c:3223
__slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3322
__slab_alloc_node mm/slub.c:3375 [inline]
slab_alloc_node mm/slub.c:3468 [inline]
__kmem_cache_alloc_node+0x12c/0x310 mm/slub.c:3517
__do_kmalloc_node mm/slab_common.c:1022 [inline]
__kmalloc+0x4f/0x100 mm/slab_common.c:1036
kmalloc include/linux/slab.h:603 [inline]
usb_get_status+0x7a/0x270 drivers/usb/core/message.c:1145
usb_get_std_status include/linux/usb.h:1856 [inline]
hub_configure drivers/usb/core/hub.c:1602 [inline]
hub_probe+0x178e/0x3070 drivers/usb/core/hub.c:1922
usb_probe_interface+0x307/0x930 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:579 [inline]
really_probe+0x234/0xc90 drivers/base/dd.c:658
__driver_probe_device+0x1de/0x4b0 drivers/base/dd.c:800
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:830
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1136 [inline]
free_unref_page_prepare+0x460/0xa20 mm/page_alloc.c:2312
free_unref_page+0x33/0x2c0 mm/page_alloc.c:2405
mm_free_pgd kernel/fork.c:803 [inline]
__mmdrop+0xd7/0x470 kernel/fork.c:919
mmdrop include/linux/sched/mm.h:54 [inline]
__mmput kernel/fork.c:1360 [inline]
mmput+0x376/0x420 kernel/fork.c:1371
free_bprm+0x144/0x3f0 fs/exec.c:1492
kernel_execve+0x3e7/0x4e0 fs/exec.c:2026
call_usermodehelper_exec_async+0x256/0x4c0 kernel/umh.c:110
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304

Memory state around the buggy address:
ffff888105f04c00: fc 06 fc fc fc fc fa fc fc fc fc 06 fc fc fc fc
ffff888105f04c80: 06 fc fc fc fc 07 fc fc fc fc 00 fc fc fc fc 00
>ffff888105f04d00: fc fc fc fc 00 fc fc fc fc 00 fc fc fc fc 06 fc
^
ffff888105f04d80: fc fc fc 05 fc fc fc fc fc fc fc fc fc fc fc fc
ffff888105f04e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================

---
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Next message: Dan Carpenter: "drivers/net/wireless/mediatek/mt76/mt76x02_util.c:475 mt76x02_set_key() warn: variable dereferenced before check 'key' (see line 415)"
Previous message: Ingo Molnar: "Re: [PATCH RFC x86/nmi] Fix out-of-order nesting checks"
Next in thread: Hongren Zheng: "Re: [syzbot] [usb?] usb-testing boot error: KASAN: slab-out-of-bounds Write in vhci_setup"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]