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Date: Tue, 19 Nov 2019 14:38:11 +0100
From: Andrey Konovalov <andreyknvl@...gle.com>
To: syzbot <syzbot+7c72edfb407b2bd866ce@...kaller.appspotmail.com>
Cc: amitkarwar@...il.com, "David S. Miller" <davem@...emloft.net>,
Kalle Valo <kvalo@...eaurora.org>,
LKML <linux-kernel@...r.kernel.org>,
USB list <linux-usb@...r.kernel.org>,
linux-wireless@...r.kernel.org, netdev <netdev@...r.kernel.org>,
siva8118@...il.com,
syzkaller-bugs <syzkaller-bugs@...glegroups.com>
Subject: Re: KASAN: invalid-free in rsi_91x_deinit
On Tue, Apr 23, 2019 at 2:36 PM syzbot
<syzbot+7c72edfb407b2bd866ce@...kaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit: d34f9519 usb-fuzzer: main usb gadget fuzzer driver
> git tree: https://github.com/google/kasan/tree/usb-fuzzer
> console output: https://syzkaller.appspot.com/x/log.txt?x=14a79403200000
> kernel config: https://syzkaller.appspot.com/x/.config?x=c73d1bb5aeaeae20
> dashboard link: https://syzkaller.appspot.com/bug?extid=7c72edfb407b2bd866ce
> compiler: gcc (GCC) 9.0.0 20181231 (experimental)
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17547247200000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=147b3a1d200000
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+7c72edfb407b2bd866ce@...kaller.appspotmail.com
>
> usb 1-1: config 252 interface 115 altsetting 0 has 1 endpoint descriptor,
> different from the interface descriptor's value: 4
> usb 1-1: New USB device found, idVendor=1618, idProduct=9113,
> bcdDevice=32.21
> usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
> rsi_91x: rsi_probe: Failed to init usb interface
> ==================================================================
> BUG: KASAN: double-free or invalid-free in slab_free mm/slub.c:3003 [inline]
> BUG: KASAN: double-free or invalid-free in kfree+0xce/0x280 mm/slub.c:3958
>
> CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.1.0-rc5-319617-gd34f951 #4
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
> Google 01/01/2011
> Workqueue: usb_hub_wq hub_event
> Call Trace:
> __dump_stack lib/dump_stack.c:77 [inline]
> dump_stack+0xe8/0x16e lib/dump_stack.c:113
> print_address_description+0x6c/0x236 mm/kasan/report.c:187
> kasan_report_invalid_free+0x66/0xa0 mm/kasan/report.c:278
> __kasan_slab_free+0x162/0x180 mm/kasan/common.c:438
> slab_free_hook mm/slub.c:1429 [inline]
> slab_free_freelist_hook+0x5e/0x140 mm/slub.c:1456
> slab_free mm/slub.c:3003 [inline]
> kfree+0xce/0x280 mm/slub.c:3958
> rsi_91x_deinit+0x27b/0x300 drivers/net/wireless/rsi/rsi_91x_main.c:407
> rsi_probe+0xdf3/0x140d drivers/net/wireless/rsi/rsi_91x_sdio.c:1178
> usb_probe_interface+0x31d/0x820 drivers/usb/core/driver.c:361
> really_probe+0x2da/0xb10 drivers/base/dd.c:509
> driver_probe_device+0x21d/0x350 drivers/base/dd.c:671
> __device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778
> bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454
> __device_attach+0x223/0x3a0 drivers/base/dd.c:844
> bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514
> device_add+0xad2/0x16e0 drivers/base/core.c:2106
> usb_set_configuration+0xdf7/0x1740 drivers/usb/core/message.c:2021
> generic_probe+0xa2/0xda drivers/usb/core/generic.c:210
> usb_probe_device+0xc0/0x150 drivers/usb/core/driver.c:266
> really_probe+0x2da/0xb10 drivers/base/dd.c:509
> driver_probe_device+0x21d/0x350 drivers/base/dd.c:671
> __device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778
> bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454
> __device_attach+0x223/0x3a0 drivers/base/dd.c:844
> bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514
> device_add+0xad2/0x16e0 drivers/base/core.c:2106
> usb_new_device.cold+0x537/0xccf drivers/usb/core/hub.c:2534
> hub_port_connect drivers/usb/core/hub.c:5089 [inline]
> hub_port_connect_change drivers/usb/core/hub.c:5204 [inline]
> port_event drivers/usb/core/hub.c:5350 [inline]
> hub_event+0x1398/0x3b00 drivers/usb/core/hub.c:5432
> process_one_work+0x90f/0x1580 kernel/workqueue.c:2269
> worker_thread+0x9b/0xe20 kernel/workqueue.c:2415
> kthread+0x313/0x420 kernel/kthread.c:253
> ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
>
> Allocated by task 12:
> set_track mm/kasan/common.c:87 [inline]
> __kasan_kmalloc mm/kasan/common.c:497 [inline]
> __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:470
> rsi_init_sdio_interface drivers/net/wireless/rsi/rsi_91x_sdio.c:853
> [inline]
> rsi_probe+0x11a/0x140d drivers/net/wireless/rsi/rsi_91x_sdio.c:965
> usb_probe_interface+0x31d/0x820 drivers/usb/core/driver.c:361
> really_probe+0x2da/0xb10 drivers/base/dd.c:509
> driver_probe_device+0x21d/0x350 drivers/base/dd.c:671
> __device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778
> bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454
> __device_attach+0x223/0x3a0 drivers/base/dd.c:844
> bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514
> device_add+0xad2/0x16e0 drivers/base/core.c:2106
> usb_set_configuration+0xdf7/0x1740 drivers/usb/core/message.c:2021
> generic_probe+0xa2/0xda drivers/usb/core/generic.c:210
> usb_probe_device+0xc0/0x150 drivers/usb/core/driver.c:266
> really_probe+0x2da/0xb10 drivers/base/dd.c:509
> driver_probe_device+0x21d/0x350 drivers/base/dd.c:671
> __device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778
> bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454
> __device_attach+0x223/0x3a0 drivers/base/dd.c:844
> bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514
> device_add+0xad2/0x16e0 drivers/base/core.c:2106
> usb_new_device.cold+0x537/0xccf drivers/usb/core/hub.c:2534
> hub_port_connect drivers/usb/core/hub.c:5089 [inline]
> hub_port_connect_change drivers/usb/core/hub.c:5204 [inline]
> port_event drivers/usb/core/hub.c:5350 [inline]
> hub_event+0x1398/0x3b00 drivers/usb/core/hub.c:5432
> process_one_work+0x90f/0x1580 kernel/workqueue.c:2269
> worker_thread+0x9b/0xe20 kernel/workqueue.c:2415
> kthread+0x313/0x420 kernel/kthread.c:253
> ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
>
> Freed by task 12:
> set_track mm/kasan/common.c:87 [inline]
> __kasan_slab_free+0x130/0x180 mm/kasan/common.c:459
> slab_free_hook mm/slub.c:1429 [inline]
> slab_free_freelist_hook+0x5e/0x140 mm/slub.c:1456
> slab_free mm/slub.c:3003 [inline]
> kfree+0xce/0x280 mm/slub.c:3958
> rsi_probe+0xf04/0x140d drivers/net/wireless/rsi/rsi_91x_sdio.c:1196
> usb_probe_interface+0x31d/0x820 drivers/usb/core/driver.c:361
> really_probe+0x2da/0xb10 drivers/base/dd.c:509
> driver_probe_device+0x21d/0x350 drivers/base/dd.c:671
> __device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778
> bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454
> __device_attach+0x223/0x3a0 drivers/base/dd.c:844
> bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514
> device_add+0xad2/0x16e0 drivers/base/core.c:2106
> usb_set_configuration+0xdf7/0x1740 drivers/usb/core/message.c:2021
> generic_probe+0xa2/0xda drivers/usb/core/generic.c:210
> usb_probe_device+0xc0/0x150 drivers/usb/core/driver.c:266
> really_probe+0x2da/0xb10 drivers/base/dd.c:509
> driver_probe_device+0x21d/0x350 drivers/base/dd.c:671
> __device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778
> bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454
> __device_attach+0x223/0x3a0 drivers/base/dd.c:844
> bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514
> device_add+0xad2/0x16e0 drivers/base/core.c:2106
> usb_new_device.cold+0x537/0xccf drivers/usb/core/hub.c:2534
> hub_port_connect drivers/usb/core/hub.c:5089 [inline]
> hub_port_connect_change drivers/usb/core/hub.c:5204 [inline]
> port_event drivers/usb/core/hub.c:5350 [inline]
> hub_event+0x1398/0x3b00 drivers/usb/core/hub.c:5432
> process_one_work+0x90f/0x1580 kernel/workqueue.c:2269
> worker_thread+0x9b/0xe20 kernel/workqueue.c:2415
> kthread+0x313/0x420 kernel/kthread.c:253
> ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
>
> The buggy address belongs to the object at ffff888214af0c80
> which belongs to the cache kmalloc-512 of size 512
> The buggy address is located 0 bytes inside of
> 512-byte region [ffff888214af0c80, ffff888214af0e80)
> The buggy address belongs to the page:
> page:ffffea000852bc00 count:1 mapcount:0 mapping:ffff88812c3f4c00
> index:0xffff888214af1180 compound_mapcount: 0
> flags: 0x57ff00000010200(slab|head)
> raw: 057ff00000010200 ffffea00086b3780 0000000800000008 ffff88812c3f4c00
> raw: ffff888214af1180 00000000800c000a 00000001ffffffff 0000000000000000
> page dumped because: kasan: bad access detected
>
> Memory state around the buggy address:
> ffff888214af0b80: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc
> ffff888214af0c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
> > ffff888214af0c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
> ^
> ffff888214af0d00: fb fb fb fb fb fb f
>
>
> ---
> This bug is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at syzkaller@...glegroups.com.
>
> syzbot will keep track of this bug report. See:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
> syzbot can test patches for this bug, for details see:
> https://goo.gl/tpsmEJ#testing-patches
Most likely the same issue as:
#syz dup: WARNING: ODEBUG bug in rsi_probe
https://syzkaller.appspot.com/bug?extid=1d1597a5aa3679c65b9f
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