KASAN: use-after-free Read in __video_do_ioctl
瀏覽次數：10 次
跳到第一則未讀訊息
syzbot
2019年4月14日 下午4:06:092019/4/14
收件者：andre...@google.com、ezeq...@collabora.com、hans.v...@cisco.com、linux-...@vger.kernel.org、linux...@vger.kernel.org、linu...@vger.kernel.org、mch...@kernel.org、niklas.soder...@ragnatech.se、paul.koc...@bootlin.com、sakari...@linux.intel.com、samito...@google.com、syzkall...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: 9a33b369 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=1317cedd200000
kernel config: https://syzkaller.appspot.com/x/.config?x=23e37f59d94ddd15
dashboard link: https://syzkaller.appspot.com/bug?extid=5b7575b3f6820232e17c
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+5b7575...@syzkaller.appspotmail.com
radio-raremono 6-1:0.210: raremono_cmd_main failed (-71)
radio-raremono 6-1:0.210: V4L2 device registered as radio32
usb 6-1: USB disconnect, device number 119
radio-raremono 6-1:0.210: Thanko's Raremono disconnected
==================================================================
BUG: KASAN: use-after-free in __mutex_lock_common
kernel/locking/mutex.c:1009 [inline]
BUG: KASAN: use-after-free in __mutex_lock+0x11ad/0x12b0
kernel/locking/mutex.c:1072
Read of size 8 at addr ffff888097e94bf8 by task v4l_id/7329
CPU: 1 PID: 7329 Comm: v4l_id Not tainted 5.1.0-rc4-319354-g9a33b36 #3
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
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.cold+0x1a/0x3c mm/kasan/report.c:317
__mutex_lock_common kernel/locking/mutex.c:1009 [inline]
__mutex_lock+0x11ad/0x12b0 kernel/locking/mutex.c:1072
__video_do_ioctl+0x5d2/0xb40 drivers/media/v4l2-core/v4l2-ioctl.c:2842
usb 5-1: Using ep0 maxpacket: 8
video_usercopy+0x44e/0xf00 drivers/media/v4l2-core/v4l2-ioctl.c:3056
v4l2_ioctl+0x14e/0x1a0 drivers/media/v4l2-core/v4l2-dev.c:364
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0xced/0x12f0 fs/ioctl.c:696
ksys_ioctl+0xa0/0xc0 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x74/0xb0 fs/ioctl.c:718
do_syscall_64+0xcf/0x4f0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f582f197347
Code: 90 90 90 48 8b 05 f1 fa 2a 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff
ff c3 90 90 90 90 90 90 90 90 90 90 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff
ff 73 01 c3 48 8b 0d c1 fa 2a 00 31 d2 48 29 c2 64
usb 5-1: config 0 has an invalid interface number: 85 but max is 0
RSP: 002b:00007ffda90c77a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f582f197347
RDX: 00007ffda90c77b0 RSI: 0000000080685600 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000400884
R13: 00007ffda90c7900 R14: 0000000000000000 R15: 0000000000000000
Allocated by task 5:
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
slab_post_alloc_hook mm/slab.h:437 [inline]
slab_alloc_node mm/slub.c:2756 [inline]
__kmalloc_node_track_caller+0xf3/0x320 mm/slub.c:4372
alloc_dr drivers/base/devres.c:103 [inline]
devm_kmalloc+0x8c/0x190 drivers/base/devres.c:793
devm_kzalloc include/linux/device.h:679 [inline]
usb_raremono_probe+0x34/0x235 drivers/media/radio/radio-raremono.c:298
usb_probe_interface+0x31d/0x820 drivers/usb/core/driver.c:361
really_probe+0x2da/0xb10 drivers/base/dd.c:509
usb 5-1: config 0 has no interface number 0
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
usb 5-1: New USB device found, idVendor=04b3, idProduct=4001, bcdDevice=
1.10
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
usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
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+0x138e/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 5:
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
usb 5-1: config 0 descriptor??
slab_free mm/slub.c:3003 [inline]
kfree+0xce/0x290 mm/slub.c:3958
release_nodes+0x4ac/0x920 drivers/base/devres.c:508
devres_release_all+0x79/0xc8 drivers/base/devres.c:529
__device_release_driver drivers/base/dd.c:1086 [inline]
device_release_driver_internal+0x23a/0x4f0 drivers/base/dd.c:1113
bus_remove_device+0x302/0x5c0 drivers/base/bus.c:556
device_del+0x467/0xb90 drivers/base/core.c:2269
usb_disable_device+0x242/0x790 drivers/usb/core/message.c:1235
usb-storage 5-1:0.85: USB Mass Storage device detected
usb_disconnect+0x298/0x870 drivers/usb/core/hub.c:2197
hub_port_connect drivers/usb/core/hub.c:4940 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5204 [inline]
port_event drivers/usb/core/hub.c:5350 [inline]
hub_event+0xcd2/0x3b00 drivers/usb/core/hub.c:5432
usb-storage 5-1:0.85: Quirks match for vid 04b3 pid 4001: 2000
process_one_work+0x90f/0x1580 kernel/workqueue.c:2269
process_scheduled_works kernel/workqueue.c:2331 [inline]
worker_thread+0x7b0/0xe20 kernel/workqueue.c:2417
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 ffff888097e94400
which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 2040 bytes inside of
4096-byte region [ffff888097e94400, ffff888097e95400)
The buggy address belongs to the page:
page:ffffea00025fa400 count:1 mapcount:0 mapping:ffff88812c3f4600 index:0x0
compound_mapcount: 0
flags: 0xfff00000010200(slab|head)
raw: 00fff00000010200 dead000000000100 dead000000000200 ffff88812c3f4600
raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888097e94a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888097e94b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
> ffff888097e94b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888097e94c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888097e94c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
---
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 syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following crash on:
HEAD commit: 9a33b369 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=1317cedd200000
kernel config: https://syzkaller.appspot.com/x/.config?x=23e37f59d94ddd15
dashboard link: https://syzkaller.appspot.com/bug?extid=5b7575b3f6820232e17c
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+5b7575...@syzkaller.appspotmail.com
radio-raremono 6-1:0.210: raremono_cmd_main failed (-71)
radio-raremono 6-1:0.210: V4L2 device registered as radio32
usb 6-1: USB disconnect, device number 119
radio-raremono 6-1:0.210: Thanko's Raremono disconnected
==================================================================
BUG: KASAN: use-after-free in __mutex_lock_common
kernel/locking/mutex.c:1009 [inline]
BUG: KASAN: use-after-free in __mutex_lock+0x11ad/0x12b0
kernel/locking/mutex.c:1072
Read of size 8 at addr ffff888097e94bf8 by task v4l_id/7329
CPU: 1 PID: 7329 Comm: v4l_id Not tainted 5.1.0-rc4-319354-g9a33b36 #3
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
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.cold+0x1a/0x3c mm/kasan/report.c:317
__mutex_lock_common kernel/locking/mutex.c:1009 [inline]
__mutex_lock+0x11ad/0x12b0 kernel/locking/mutex.c:1072
__video_do_ioctl+0x5d2/0xb40 drivers/media/v4l2-core/v4l2-ioctl.c:2842
usb 5-1: Using ep0 maxpacket: 8
video_usercopy+0x44e/0xf00 drivers/media/v4l2-core/v4l2-ioctl.c:3056
v4l2_ioctl+0x14e/0x1a0 drivers/media/v4l2-core/v4l2-dev.c:364
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0xced/0x12f0 fs/ioctl.c:696
ksys_ioctl+0xa0/0xc0 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x74/0xb0 fs/ioctl.c:718
do_syscall_64+0xcf/0x4f0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f582f197347
Code: 90 90 90 48 8b 05 f1 fa 2a 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff
ff c3 90 90 90 90 90 90 90 90 90 90 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff
ff 73 01 c3 48 8b 0d c1 fa 2a 00 31 d2 48 29 c2 64
usb 5-1: config 0 has an invalid interface number: 85 but max is 0
RSP: 002b:00007ffda90c77a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f582f197347
RDX: 00007ffda90c77b0 RSI: 0000000080685600 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000400884
R13: 00007ffda90c7900 R14: 0000000000000000 R15: 0000000000000000
Allocated by task 5:
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
slab_post_alloc_hook mm/slab.h:437 [inline]
slab_alloc_node mm/slub.c:2756 [inline]
__kmalloc_node_track_caller+0xf3/0x320 mm/slub.c:4372
alloc_dr drivers/base/devres.c:103 [inline]
devm_kmalloc+0x8c/0x190 drivers/base/devres.c:793
devm_kzalloc include/linux/device.h:679 [inline]
usb_raremono_probe+0x34/0x235 drivers/media/radio/radio-raremono.c:298
usb_probe_interface+0x31d/0x820 drivers/usb/core/driver.c:361
really_probe+0x2da/0xb10 drivers/base/dd.c:509
usb 5-1: config 0 has no interface number 0
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
usb 5-1: New USB device found, idVendor=04b3, idProduct=4001, bcdDevice=
1.10
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
usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
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+0x138e/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 5:
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
usb 5-1: config 0 descriptor??
slab_free mm/slub.c:3003 [inline]
kfree+0xce/0x290 mm/slub.c:3958
release_nodes+0x4ac/0x920 drivers/base/devres.c:508
devres_release_all+0x79/0xc8 drivers/base/devres.c:529
__device_release_driver drivers/base/dd.c:1086 [inline]
device_release_driver_internal+0x23a/0x4f0 drivers/base/dd.c:1113
bus_remove_device+0x302/0x5c0 drivers/base/bus.c:556
device_del+0x467/0xb90 drivers/base/core.c:2269
usb_disable_device+0x242/0x790 drivers/usb/core/message.c:1235
usb-storage 5-1:0.85: USB Mass Storage device detected
usb_disconnect+0x298/0x870 drivers/usb/core/hub.c:2197
hub_port_connect drivers/usb/core/hub.c:4940 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5204 [inline]
port_event drivers/usb/core/hub.c:5350 [inline]
hub_event+0xcd2/0x3b00 drivers/usb/core/hub.c:5432
usb-storage 5-1:0.85: Quirks match for vid 04b3 pid 4001: 2000
process_one_work+0x90f/0x1580 kernel/workqueue.c:2269
process_scheduled_works kernel/workqueue.c:2331 [inline]
worker_thread+0x7b0/0xe20 kernel/workqueue.c:2417
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 ffff888097e94400
which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 2040 bytes inside of
4096-byte region [ffff888097e94400, ffff888097e95400)
The buggy address belongs to the page:
page:ffffea00025fa400 count:1 mapcount:0 mapping:ffff88812c3f4600 index:0x0
compound_mapcount: 0
flags: 0xfff00000010200(slab|head)
raw: 00fff00000010200 dead000000000100 dead000000000200 ffff88812c3f4600
raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888097e94a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888097e94b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
> ffff888097e94b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888097e94c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888097e94c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
---
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 syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
2019年7月14日 晚上8:24:072019/7/14
收件者：andre...@google.com、ezeq...@collabora.com、hans.v...@cisco.com、hverkui...@xs4all.nl、linux-...@vger.kernel.org、linux...@vger.kernel.org、linu...@vger.kernel.org、mch...@kernel.org、niklas.soder...@ragnatech.se、niklas.s...@ragnatech.se、paul.koc...@bootlin.com、sakari...@linux.intel.com、samito...@google.com、syzkall...@googlegroups.com、tg...@linutronix.de、tre...@nvidia.com
syzbot has found a reproducer for the following crash on:
HEAD commit: 6a3599ce usb-fuzzer: main usb gadget fuzzer driver
git tree: https://github.com/google/kasan.git usb-fuzzer
console output: https://syzkaller.appspot.com/x/log.txt?x=169777b8600000
kernel config: https://syzkaller.appspot.com/x/.config?x=d90745bdf884fc0a
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+5b7575...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: use-after-free in __lock_acquire+0x3a5d/0x5340
kernel/locking/lockdep.c:3665
Read of size 8 at addr ffff8881cfd80808 by task v4l_id/3788
CPU: 1 PID: 3788 Comm: v4l_id Not tainted 5.2.0-rc6+ #14
print_address_description+0x67/0x231 mm/kasan/report.c:188
__kasan_report.cold+0x1a/0x32 mm/kasan/report.c:317
kasan_report+0xe/0x20 mm/kasan/common.c:614
__lock_acquire+0x3a5d/0x5340 kernel/locking/lockdep.c:3665
lock_acquire+0x100/0x2b0 kernel/locking/lockdep.c:4303
__mutex_lock_common kernel/locking/mutex.c:926 [inline]
__mutex_lock+0xf9/0x12b0 kernel/locking/mutex.c:1073
__video_do_ioctl+0x5c7/0xb30 drivers/media/v4l2-core/v4l2-ioctl.c:2839
video_usercopy+0x446/0xee0 drivers/media/v4l2-core/v4l2-ioctl.c:3053
v4l2_ioctl+0x147/0x1a0 drivers/media/v4l2-core/v4l2-dev.c:360
ksys_ioctl+0x9b/0xc0 fs/ioctl.c:713
do_syscall_64+0xb7/0x560 arch/x86/entry/common.c:301
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fbaeda44347
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fbaeda44347
RDX: 00007ffeeb4faf60 RSI: 0000000080685600 RDI: 0000000000000003
Allocated by task 107:
save_stack+0x1b/0x80 mm/kasan/common.c:71
set_track mm/kasan/common.c:79 [inline]
__kasan_kmalloc mm/kasan/common.c:489 [inline]
__kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:462
slab_post_alloc_hook mm/slab.h:437 [inline]
slab_alloc_node mm/slub.c:2748 [inline]
__kmalloc_node_track_caller+0xee/0x370 mm/slub.c:4363
alloc_dr drivers/base/devres.c:103 [inline]
devm_kmalloc+0x87/0x190 drivers/base/devres.c:815
devm_kzalloc include/linux/device.h:679 [inline]
usb_raremono_probe+0x2f/0x231 drivers/media/radio/radio-raremono.c:298
usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361
really_probe+0x281/0x660 drivers/base/dd.c:509
driver_probe_device+0x104/0x210 drivers/base/dd.c:670
__device_attach_driver+0x1c2/0x220 drivers/base/dd.c:777
bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454
__device_attach+0x217/0x360 drivers/base/dd.c:843
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514
device_add+0xae6/0x16f0 drivers/base/core.c:2111
usb_set_configuration+0xdf6/0x1670 drivers/usb/core/message.c:2023
generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210
usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266
really_probe+0x281/0x660 drivers/base/dd.c:509
driver_probe_device+0x104/0x210 drivers/base/dd.c:670
__device_attach_driver+0x1c2/0x220 drivers/base/dd.c:777
bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454
__device_attach+0x217/0x360 drivers/base/dd.c:843
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514
device_add+0xae6/0x16f0 drivers/base/core.c:2111
usb_new_device.cold+0x8c1/0x1016 drivers/usb/core/hub.c:2536
hub_port_connect drivers/usb/core/hub.c:5098 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5213 [inline]
port_event drivers/usb/core/hub.c:5359 [inline]
hub_event+0x1b3d/0x35f0 drivers/usb/core/hub.c:5441
process_one_work+0x905/0x1570 kernel/workqueue.c:2269
process_scheduled_works kernel/workqueue.c:2331 [inline]
worker_thread+0x7ab/0xe20 kernel/workqueue.c:2417
kthread+0x30b/0x410 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Freed by task 107:
save_stack+0x1b/0x80 mm/kasan/common.c:71
set_track mm/kasan/common.c:79 [inline]
__kasan_slab_free+0x130/0x180 mm/kasan/common.c:451
slab_free_hook mm/slub.c:1421 [inline]
slab_free_freelist_hook mm/slub.c:1448 [inline]
slab_free mm/slub.c:2994 [inline]
kfree+0xd7/0x280 mm/slub.c:3949
release_nodes+0x4a1/0x910 drivers/base/devres.c:508
devres_release_all+0x74/0xc3 drivers/base/devres.c:529
__device_release_driver drivers/base/dd.c:1085 [inline]
device_release_driver_internal+0x21b/0x4c0 drivers/base/dd.c:1112
bus_remove_device+0x2dc/0x4a0 drivers/base/bus.c:556
device_del+0x460/0xb80 drivers/base/core.c:2274
usb_disable_device+0x211/0x690 drivers/usb/core/message.c:1237
usb_disconnect+0x284/0x830 drivers/usb/core/hub.c:2199
hub_port_connect drivers/usb/core/hub.c:4949 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5213 [inline]
port_event drivers/usb/core/hub.c:5359 [inline]
hub_event+0x143d/0x35f0 drivers/usb/core/hub.c:5441
process_one_work+0x905/0x1570 kernel/workqueue.c:2269
process_scheduled_works kernel/workqueue.c:2331 [inline]
worker_thread+0x7ab/0xe20 kernel/workqueue.c:2417
kthread+0x30b/0x410 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
The buggy address belongs to the object at ffff8881cfd80000
4096-byte region [ffff8881cfd80000, ffff8881cfd81000)
index:0x0 compound_mapcount: 0
flags: 0x200000000010200(slab|head)
raw: 0200000000010200 dead000000000100 dead000000000200 ffff8881dac02600
ffff8881cfd80780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
> ffff8881cfd80800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8881cfd80880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8881cfd80900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
HEAD commit: 6a3599ce usb-fuzzer: main usb gadget fuzzer driver
git tree: https://github.com/google/kasan.git usb-fuzzer
console output: https://syzkaller.appspot.com/x/log.txt?x=169777b8600000
kernel config: https://syzkaller.appspot.com/x/.config?x=d90745bdf884fc0a
dashboard link: https://syzkaller.appspot.com/bug?extid=5b7575b3f6820232e17c
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11dd33b8600000
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+5b7575...@syzkaller.appspotmail.com
BUG: KASAN: use-after-free in __lock_acquire+0x3a5d/0x5340
kernel/locking/lockdep.c:3665
Read of size 8 at addr ffff8881cfd80808 by task v4l_id/3788
CPU: 1 PID: 3788 Comm: v4l_id Not tainted 5.2.0-rc6+ #14
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0xca/0x13e lib/dump_stack.c:113
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
print_address_description+0x67/0x231 mm/kasan/report.c:188
__kasan_report.cold+0x1a/0x32 mm/kasan/report.c:317
kasan_report+0xe/0x20 mm/kasan/common.c:614
__lock_acquire+0x3a5d/0x5340 kernel/locking/lockdep.c:3665
lock_acquire+0x100/0x2b0 kernel/locking/lockdep.c:4303
__mutex_lock_common kernel/locking/mutex.c:926 [inline]
__mutex_lock+0xf9/0x12b0 kernel/locking/mutex.c:1073
__video_do_ioctl+0x5c7/0xb30 drivers/media/v4l2-core/v4l2-ioctl.c:2839
video_usercopy+0x446/0xee0 drivers/media/v4l2-core/v4l2-ioctl.c:3053
v4l2_ioctl+0x147/0x1a0 drivers/media/v4l2-core/v4l2-dev.c:360
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0xcda/0x12e0 fs/ioctl.c:696
file_ioctl fs/ioctl.c:509 [inline]
ksys_ioctl+0x9b/0xc0 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:718
__se_sys_ioctl fs/ioctl.c:718 [inline]
do_syscall_64+0xb7/0x560 arch/x86/entry/common.c:301
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fbaeda44347
Code: 90 90 90 48 8b 05 f1 fa 2a 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff
ff c3 90 90 90 90 90 90 90 90 90 90 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff
ff 73 01 c3 48 8b 0d c1 fa 2a 00 31 d2 48 29 c2 64
RSP: 002b:00007ffeeb4faf58 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
ff c3 90 90 90 90 90 90 90 90 90 90 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff
ff 73 01 c3 48 8b 0d c1 fa 2a 00 31 d2 48 29 c2 64
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fbaeda44347
RDX: 00007ffeeb4faf60 RSI: 0000000080685600 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000400884
R13: 00007ffeeb4fb0b0 R14: 0000000000000000 R15: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000400884
Allocated by task 107:
save_stack+0x1b/0x80 mm/kasan/common.c:71
set_track mm/kasan/common.c:79 [inline]
__kasan_kmalloc mm/kasan/common.c:489 [inline]
__kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:462
slab_post_alloc_hook mm/slab.h:437 [inline]
slab_alloc_node mm/slub.c:2748 [inline]
__kmalloc_node_track_caller+0xee/0x370 mm/slub.c:4363
alloc_dr drivers/base/devres.c:103 [inline]
devm_kmalloc+0x87/0x190 drivers/base/devres.c:815
devm_kzalloc include/linux/device.h:679 [inline]
usb_raremono_probe+0x2f/0x231 drivers/media/radio/radio-raremono.c:298
usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361
really_probe+0x281/0x660 drivers/base/dd.c:509
driver_probe_device+0x104/0x210 drivers/base/dd.c:670
__device_attach_driver+0x1c2/0x220 drivers/base/dd.c:777
bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454
__device_attach+0x217/0x360 drivers/base/dd.c:843
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514
device_add+0xae6/0x16f0 drivers/base/core.c:2111
usb_set_configuration+0xdf6/0x1670 drivers/usb/core/message.c:2023
generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210
usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266
really_probe+0x281/0x660 drivers/base/dd.c:509
driver_probe_device+0x104/0x210 drivers/base/dd.c:670
__device_attach_driver+0x1c2/0x220 drivers/base/dd.c:777
bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454
__device_attach+0x217/0x360 drivers/base/dd.c:843
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514
device_add+0xae6/0x16f0 drivers/base/core.c:2111
usb_new_device.cold+0x8c1/0x1016 drivers/usb/core/hub.c:2536
hub_port_connect drivers/usb/core/hub.c:5098 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5213 [inline]
port_event drivers/usb/core/hub.c:5359 [inline]
hub_event+0x1b3d/0x35f0 drivers/usb/core/hub.c:5441
process_one_work+0x905/0x1570 kernel/workqueue.c:2269
process_scheduled_works kernel/workqueue.c:2331 [inline]
worker_thread+0x7ab/0xe20 kernel/workqueue.c:2417
kthread+0x30b/0x410 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Freed by task 107:
save_stack+0x1b/0x80 mm/kasan/common.c:71
set_track mm/kasan/common.c:79 [inline]
__kasan_slab_free+0x130/0x180 mm/kasan/common.c:451
slab_free_hook mm/slub.c:1421 [inline]
slab_free_freelist_hook mm/slub.c:1448 [inline]
slab_free mm/slub.c:2994 [inline]
kfree+0xd7/0x280 mm/slub.c:3949
release_nodes+0x4a1/0x910 drivers/base/devres.c:508
devres_release_all+0x74/0xc3 drivers/base/devres.c:529
__device_release_driver drivers/base/dd.c:1085 [inline]
device_release_driver_internal+0x21b/0x4c0 drivers/base/dd.c:1112
bus_remove_device+0x2dc/0x4a0 drivers/base/bus.c:556
device_del+0x460/0xb80 drivers/base/core.c:2274
usb_disable_device+0x211/0x690 drivers/usb/core/message.c:1237
usb_disconnect+0x284/0x830 drivers/usb/core/hub.c:2199
hub_port_connect drivers/usb/core/hub.c:4949 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5213 [inline]
port_event drivers/usb/core/hub.c:5359 [inline]
hub_event+0x143d/0x35f0 drivers/usb/core/hub.c:5441
process_one_work+0x905/0x1570 kernel/workqueue.c:2269
process_scheduled_works kernel/workqueue.c:2331 [inline]
worker_thread+0x7ab/0xe20 kernel/workqueue.c:2417
kthread+0x30b/0x410 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
The buggy address belongs to the object at ffff8881cfd80000
which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 2056 bytes inside of
4096-byte region [ffff8881cfd80000, ffff8881cfd81000)
The buggy address belongs to the page:
page:ffffea00073f6000 refcount:1 mapcount:0 mapping:ffff8881dac02600
index:0x0 compound_mapcount: 0
flags: 0x200000000010200(slab|head)
raw: 0200000000010200 dead000000000100 dead000000000200 ffff8881dac02600
raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8881cfd80700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8881cfd80780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
> ffff8881cfd80800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8881cfd80880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8881cfd80900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Andrey Konovalov
2019年8月13日 上午8:28:152019/8/13
收件者：syzbot、ezeq...@collabora.com、Hans Verkuil、LKML、linux...@vger.kernel.org、USB list、Mauro Carvalho Chehab、niklas.soder...@ragnatech.se、paul.koc...@bootlin.com、Sakari Ailus、Sami Tolvanen、syzkaller-bugs
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