回复: memory leak in __usbhid_submit_report

From: Zhang, Qiang
Date: Fri Nov 13 2020 - 03:35:37 EST

Next message: Steen Hegelund: "Re: [PATCH net] net: phy: mscc: remove non-MACSec compatible phy"
Previous message: xiakaixu1987: "[PATCH] phy: mapphone-mdm6600: remove the unused variable error value assignment"
In reply to: syzbot: "memory leak in __usbhid_submit_report"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

________________________________________
发件人: syzbot <syzbot+47b26cd837ececfc666d@xxxxxxxxxxxxxxxxxxxxxxxxx>
发送时间: 2020年11月11日 21:55
收件人: benjamin.tissoires@xxxxxxxxxx; jikos@xxxxxxxxxx; linux-input@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; linux-usb@xxxxxxxxxxxxxxx; syzkaller-bugs@xxxxxxxxxxxxxxxx
主题: memory leak in __usbhid_submit_report

[Please note this e-mail is from an EXTERNAL e-mail address]

Hello,

syzbot found the following issue on:

HEAD commit: f8394f23 Linux 5.10-rc3
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=12ebbdc6500000
kernel config: https://syzkaller.appspot.com/x/.config?x=a3f13716fa0212fd
dashboard link: https://syzkaller.appspot.com/bug?extid=47b26cd837ececfc666d
compiler: gcc (GCC) 10.1.0-syz 20200507
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14497b82500000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1586ff14500000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+47b26cd837ececfc666d@xxxxxxxxxxxxxxxxxxxxxxxxx

BUG: memory leak
unreferenced object 0xffff8881097e5ec0 (size 32):
comm "kworker/0:1", pid 7, jiffies 4294949214 (age 33.520s)
hex dump (first 32 bytes):
04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000008296eaa1>] __usbhid_submit_report+0x116/0x490 drivers/hid/usbhid/hid-core.c:588
[<00000000fe39f007>] usbhid_submit_report drivers/hid/usbhid/hid-core.c:638 [inline]
[<00000000fe39f007>] usbhid_request+0x59/0xa0 drivers/hid/usbhid/hid-core.c:1272
[<00000000428a854b>] hidinput_led_worker+0x59/0x160 drivers/hid/hid-input.c:1507
[<000000001bb8d86d>] process_one_work+0x27d/0x590 kernel/workqueue.c:2272
[<000000005d9a2f9c>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2418
[<00000000dc999b29>] kthread+0x178/0x1b0 kernel/kthread.c:292
[<0000000099d5a9ee>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

When usb device disconnect the "raw_report" should be free in usbhid_stop.
can we release it in this function, as shown below:

usbhid_stop(struct hid_device *hid) {
........
for (index = 0; index < HID_CONTROL_FIFO_SIZE; index++) {
if (usbhid->ctrl[index].raw_report)
kfree(usbhid->ctrl[index].raw_report);
if (usbhid->out[index].raw_report)
kfree(usbhid->out[index].raw_report);
}
...............
}

BUG: memory leak
unreferenced object 0xffff8881120200c0 (size 32):
comm "kworker/0:1", pid 7, jiffies 4294949214 (age 33.520s)
hex dump (first 32 bytes):
04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000008296eaa1>] __usbhid_submit_report+0x116/0x490 drivers/hid/usbhid/hid-core.c:588
[<00000000fe39f007>] usbhid_submit_report drivers/hid/usbhid/hid-core.c:638 [inline]
[<00000000fe39f007>] usbhid_request+0x59/0xa0 drivers/hid/usbhid/hid-core.c:1272
[<00000000428a854b>] hidinput_led_worker+0x59/0x160 drivers/hid/hid-input.c:1507
[<000000001bb8d86d>] process_one_work+0x27d/0x590 kernel/workqueue.c:2272
[<000000005d9a2f9c>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2418
[<00000000dc999b29>] kthread+0x178/0x1b0 kernel/kthread.c:292
[<0000000099d5a9ee>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

BUG: memory leak
unreferenced object 0xffff888107fa9420 (size 32):
comm "kworker/0:1", pid 7, jiffies 4294949214 (age 33.520s)
hex dump (first 32 bytes):
04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000008296eaa1>] __usbhid_submit_report+0x116/0x490 drivers/hid/usbhid/hid-core.c:588
[<00000000fe39f007>] usbhid_submit_report drivers/hid/usbhid/hid-core.c:638 [inline]
[<00000000fe39f007>] usbhid_request+0x59/0xa0 drivers/hid/usbhid/hid-core.c:1272
[<00000000428a854b>] hidinput_led_worker+0x59/0x160 drivers/hid/hid-input.c:1507
[<000000001bb8d86d>] process_one_work+0x27d/0x590 kernel/workqueue.c:2272
[<000000005d9a2f9c>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2418
[<00000000dc999b29>] kthread+0x178/0x1b0 kernel/kthread.c:292
[<0000000099d5a9ee>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

BUG: memory leak
unreferenced object 0xffff888112020b60 (size 32):
comm "kworker/1:4", pid 8569, jiffies 4294949237 (age 33.290s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000008296eaa1>] __usbhid_submit_report+0x116/0x490 drivers/hid/usbhid/hid-core.c:588
[<00000000fe39f007>] usbhid_submit_report drivers/hid/usbhid/hid-core.c:638 [inline]
[<00000000fe39f007>] usbhid_request+0x59/0xa0 drivers/hid/usbhid/hid-core.c:1272
[<00000000428a854b>] hidinput_led_worker+0x59/0x160 drivers/hid/hid-input.c:1507
[<000000001bb8d86d>] process_one_work+0x27d/0x590 kernel/workqueue.c:2272
[<000000005d9a2f9c>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2418
[<00000000dc999b29>] kthread+0x178/0x1b0 kernel/kthread.c:292
[<0000000099d5a9ee>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

BUG: memory leak
unreferenced object 0xffff888107fa9a20 (size 32):
comm "kworker/1:3", pid 8559, jiffies 4294949241 (age 33.250s)
hex dump (first 32 bytes):
04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000008296eaa1>] __usbhid_submit_report+0x116/0x490 drivers/hid/usbhid/hid-core.c:588
[<00000000fe39f007>] usbhid_submit_report drivers/hid/usbhid/hid-core.c:638 [inline]
[<00000000fe39f007>] usbhid_request+0x59/0xa0 drivers/hid/usbhid/hid-core.c:1272
[<00000000428a854b>] hidinput_led_worker+0x59/0x160 drivers/hid/hid-input.c:1507
[<000000001bb8d86d>] process_one_work+0x27d/0x590 kernel/workqueue.c:2272
[<000000005d9a2f9c>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2418
[<00000000dc999b29>] kthread+0x178/0x1b0 kernel/kthread.c:292
[<0000000099d5a9ee>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

BUG: memory leak
unreferenced object 0xffff888112020940 (size 32):
comm "kworker/1:3", pid 8559, jiffies 4294949241 (age 33.250s)
hex dump (first 32 bytes):
04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000008296eaa1>] __usbhid_submit_report+0x116/0x490 drivers/hid/usbhid/hid-core.c:588
[<00000000fe39f007>] usbhid_submit_report drivers/hid/usbhid/hid-core.c:638 [inline]
[<00000000fe39f007>] usbhid_request+0x59/0xa0 drivers/hid/usbhid/hid-core.c:1272
[<00000000428a854b>] hidinput_led_worker+0x59/0x160 drivers/hid/hid-input.c:1507
[<000000001bb8d86d>] process_one_work+0x27d/0x590 kernel/workqueue.c:2272
[<000000005d9a2f9c>] worker_thread+0x59/0x5d0 kernel/workqueue.c:2418
[<00000000dc999b29>] kthread+0x178/0x1b0 kernel/kthread.c:292
[<0000000099d5a9ee>] ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

executing program
executing program
executing program
executing program
executing program
executing program
executing program

---
This report 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@xxxxxxxxxxxxxxxx.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot can test patches for this issue, for details see:
https://goo.gl/tpsmEJ#testing-patches

Next message: Steen Hegelund: "Re: [PATCH net] net: phy: mscc: remove non-MACSec compatible phy"
Previous message: xiakaixu1987: "[PATCH] phy: mapphone-mdm6600: remove the unused variable error value assignment"
In reply to: syzbot: "memory leak in __usbhid_submit_report"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]