From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Anirudh Rayabharam <mail@anirudhrb.com>,
syzbot+47b26cd837ececfc666d@syzkaller.appspotmail.com,
Jiri Kosina <jkosina@suse.cz>, Sasha Levin <sashal@kernel.org>,
linux-usb@vger.kernel.org, linux-input@vger.kernel.org
Subject: [PATCH AUTOSEL 5.4 08/37] HID: usbhid: free raw_report buffers in usbhid_stop
Date: Thu, 9 Sep 2021 20:21:13 -0400 [thread overview]
Message-ID: <20210910002143.175731-8-sashal@kernel.org> (raw)
In-Reply-To: <20210910002143.175731-1-sashal@kernel.org>
From: Anirudh Rayabharam <mail@anirudhrb.com>
[ Upstream commit f7744fa16b96da57187dc8e5634152d3b63d72de ]
Free the unsent raw_report buffers when the device is removed.
Fixes a memory leak reported by syzbot at:
https://syzkaller.appspot.com/bug?id=7b4fa7cb1a7c2d3342a2a8a6c53371c8c418ab47
Reported-by: syzbot+47b26cd837ececfc666d@syzkaller.appspotmail.com
Tested-by: syzbot+47b26cd837ececfc666d@syzkaller.appspotmail.com
Signed-off-by: Anirudh Rayabharam <mail@anirudhrb.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/hid/usbhid/hid-core.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 1cfbbaf6901d..8537fcdb456d 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -503,7 +503,7 @@ static void hid_ctrl(struct urb *urb)
if (unplug) {
usbhid->ctrltail = usbhid->ctrlhead;
- } else {
+ } else if (usbhid->ctrlhead != usbhid->ctrltail) {
usbhid->ctrltail = (usbhid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
if (usbhid->ctrlhead != usbhid->ctrltail &&
@@ -1221,9 +1221,20 @@ static void usbhid_stop(struct hid_device *hid)
mutex_lock(&usbhid->mutex);
clear_bit(HID_STARTED, &usbhid->iofl);
+
spin_lock_irq(&usbhid->lock); /* Sync with error and led handlers */
set_bit(HID_DISCONNECTED, &usbhid->iofl);
+ while (usbhid->ctrltail != usbhid->ctrlhead) {
+ if (usbhid->ctrl[usbhid->ctrltail].dir == USB_DIR_OUT) {
+ kfree(usbhid->ctrl[usbhid->ctrltail].raw_report);
+ usbhid->ctrl[usbhid->ctrltail].raw_report = NULL;
+ }
+
+ usbhid->ctrltail = (usbhid->ctrltail + 1) &
+ (HID_CONTROL_FIFO_SIZE - 1);
+ }
spin_unlock_irq(&usbhid->lock);
+
usb_kill_urb(usbhid->urbin);
usb_kill_urb(usbhid->urbout);
usb_kill_urb(usbhid->urbctrl);
--
2.30.2
next prev parent reply other threads:[~2021-09-10 0:59 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-10 0:21 [PATCH AUTOSEL 5.4 01/37] clk: rockchip: rk3036: fix up the sclk_sfc parent error Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 02/37] scsi: be2iscsi: Fix use-after-free during IP updates Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 03/37] scsi: lpfc: Fix NVMe support reporting in log message Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 04/37] f2fs: Revert "f2fs: Fix indefinite loop in f2fs_gc() v1" Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 05/37] scsi: smartpqi: Fix ISR accessing uninitialized data Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 06/37] scsi: lpfc: Fix cq_id truncation in rq create Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 07/37] clk: mediatek: Fix asymmetrical PLL enable and disable control Sasha Levin
2021-09-10 0:21 ` Sasha Levin [this message]
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 09/37] f2fs: fix to force keeping write barrier for strict fsync mode Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 10/37] f2fs: fix min_seq_blocks can not make sense in some scenes Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 11/37] scsi: ufs: Verify UIC locking requirements at runtime Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 12/37] powerpc: make the install target not depend on any build artifact Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 13/37] KVM: PPC: Book3S HV: XICS: Fix mapping of passthrough interrupts Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 14/37] jbd2: fix portability problems caused by unaligned accesses Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 15/37] scsi: qla2xxx: Fix port type info Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 16/37] scsi: qla2xxx: Fix NPIV create erroneous error Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 17/37] ovl: skip checking lower file's i_writecount on truncate Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 18/37] scsi: target: pscsi: Fix possible null-pointer dereference in pscsi_complete_cmd() Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 19/37] fs: dlm: fix return -EINTR on recovery stopped Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 20/37] HID: sony: Fix more ShanWan clone gamepads to not rumble when plugged in Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 21/37] MIPS: mscc: ocelot: disable all switch ports by default Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 22/37] MIPS: mscc: ocelot: mark the phy-mode for internal PHY ports Sasha Levin
2021-09-12 10:14 ` Vladimir Oltean
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 23/37] scsi: core: Fix missing FORCE for scsi_devinfo_tbl.c build rule Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 24/37] powerpc/32: indirect function call use bctrl rather than blrl in ret_from_kernel_thread Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 25/37] powerpc/booke: Avoid link stack corruption in several places Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 26/37] KVM: PPC: Book3S HV: Initialise vcpu MSR with MSR_ME Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 27/37] KVM: PPC: Book3S HV P9: Fixes for TM softpatch interrupt NIP Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 28/37] KVM: PPC: Book3S HV Nested: Fix TM softpatch HFAC interrupt emulation Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 29/37] RDMA/core/sa_query: Retry SA queries Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 30/37] platform/x86: dell-smbios-wmi: Avoid false-positive memcpy() warning Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 31/37] clk: zynqmp: Fix a memory leak Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 32/37] ext4: if zeroout fails fall back to splitting the extent node Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 33/37] ext4: Make sure quota files are not grabbed accidentally Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 34/37] xen: remove stray preempt_disable() from PV AP startup code Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 35/37] checkkconfigsymbols.py: Fix the '--ignore' option Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 36/37] ocfs2: quota_local: fix possible uninitialized-variable access in ocfs2_local_read_info() Sasha Levin
2021-09-10 0:21 ` [PATCH AUTOSEL 5.4 37/37] ocfs2: ocfs2_downconvert_lock failure results in deadlock Sasha Levin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210910002143.175731-8-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=jkosina@suse.cz \
--cc=linux-input@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=mail@anirudhrb.com \
--cc=stable@vger.kernel.org \
--cc=syzbot+47b26cd837ececfc666d@syzkaller.appspotmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox