From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Alexandre Bounine <alex.bou9@gmail.com>,
Matt Porter <mporter@kernel.crashing.org>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Anirudh Rayabharam <mail@anirudhrb.com>
Subject: [PATCH 4.19 20/49] rapidio: handle create_workqueue() failure
Date: Mon, 24 May 2021 17:25:31 +0200 [thread overview]
Message-ID: <20210524152325.035108781@linuxfoundation.org> (raw)
In-Reply-To: <20210524152324.382084875@linuxfoundation.org>
From: Anirudh Rayabharam <mail@anirudhrb.com>
commit 69ce3ae36dcb03cdf416b0862a45369ddbf50fdf upstream.
In case create_workqueue() fails, release all resources and return -ENOMEM
to caller to avoid potential NULL pointer deref later. Move up the
create_workequeue() call to return early and avoid unwinding the call to
riocm_rx_fill().
Cc: Alexandre Bounine <alex.bou9@gmail.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Anirudh Rayabharam <mail@anirudhrb.com>
Link: https://lore.kernel.org/r/20210503115736.2104747-46-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/rapidio/rio_cm.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
--- a/drivers/rapidio/rio_cm.c
+++ b/drivers/rapidio/rio_cm.c
@@ -2136,6 +2136,14 @@ static int riocm_add_mport(struct device
return -ENODEV;
}
+ cm->rx_wq = create_workqueue(DRV_NAME "/rxq");
+ if (!cm->rx_wq) {
+ rio_release_inb_mbox(mport, cmbox);
+ rio_release_outb_mbox(mport, cmbox);
+ kfree(cm);
+ return -ENOMEM;
+ }
+
/*
* Allocate and register inbound messaging buffers to be ready
* to receive channel and system management requests
@@ -2146,7 +2154,6 @@ static int riocm_add_mport(struct device
cm->rx_slots = RIOCM_RX_RING_SIZE;
mutex_init(&cm->rx_lock);
riocm_rx_fill(cm, RIOCM_RX_RING_SIZE);
- cm->rx_wq = create_workqueue(DRV_NAME "/rxq");
INIT_WORK(&cm->rx_work, rio_ibmsg_handler);
cm->tx_slot = 0;
next prev parent reply other threads:[~2021-05-24 15:49 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-24 15:25 [PATCH 4.19 00/49] 4.19.192-rc1 review Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 01/49] firmware: arm_scpi: Prevent the ternary sign expansion bug Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 02/49] openrisc: Fix a memory leak Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 03/49] RDMA/rxe: Clear all QP fields if creation failed Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 04/49] scsi: qla2xxx: Fix error return code in qla82xx_write_flash_dword() Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 05/49] RDMA/mlx5: Recover from fatal event in dual port mode Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 06/49] platform/x86: dell-smbios-wmi: Fix oops on rmmod dell_smbios Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 07/49] ptrace: make ptrace() fail if the tracee changed its pid unexpectedly Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 08/49] nvmet: seset ns->file when open fails Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 09/49] locking/mutex: clear MUTEX_FLAGS if wait_list is empty due to signal Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 10/49] cifs: fix memory leak in smb2_copychunk_range Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 11/49] ALSA: dice: fix stream format for TC Electronic Konnekt Live at high sampling transfer frequency Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 12/49] ALSA: line6: Fix racy initialization of LINE6 MIDI Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 13/49] ALSA: dice: fix stream format at middle sampling rate for Alesis iO 26 Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 14/49] ALSA: usb-audio: Validate MS endpoint descriptors Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 15/49] ALSA: bebob/oxfw: fix Kconfig entry for Mackie d.2 Pro Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 16/49] Revert "ALSA: sb8: add a check for request_region" Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 17/49] ALSA: hda/realtek: reset eapd coeff to default value for alc287 Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 18/49] ALSA: hda/realtek: Add some CLOVE SSIDs of ALC293 Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 19/49] Revert "rapidio: fix a NULL pointer dereference when create_workqueue() fails" Greg Kroah-Hartman
2021-05-24 15:25 ` Greg Kroah-Hartman [this message]
2021-05-24 15:25 ` [PATCH 4.19 21/49] Revert "serial: mvebu-uart: Fix to avoid a potential NULL pointer dereference" Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 22/49] xen-pciback: reconfigure also from backend watch handler Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 23/49] dm snapshot: fix a crash when an origin has no snapshots Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 24/49] dm snapshot: fix crash with transient storage and zero chunk size Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 25/49] Revert "video: hgafb: fix potential NULL pointer dereference" Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 26/49] Revert "net: stmicro: fix a missing check of clk_prepare" Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 27/49] Revert "leds: lp5523: fix a missing check of return value of lp55xx_read" Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 28/49] Revert "hwmon: (lm80) fix a missing check of bus read in lm80 probe" Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 29/49] Revert "video: imsttfb: fix potential NULL pointer dereferences" Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 30/49] Revert "ecryptfs: replace BUG_ON with error handling code" Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 31/49] Revert "scsi: ufs: fix a missing check of devm_reset_control_get" Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 32/49] Revert "gdrom: fix a memory leak bug" Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 33/49] cdrom: gdrom: deallocate struct gdrom_unit fields in remove_gdrom Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 34/49] cdrom: gdrom: initialize global variable at init time Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 35/49] Revert "media: rcar_drif: fix a memory disclosure" Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 36/49] Revert "rtlwifi: fix a potential NULL pointer dereference" Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 37/49] Revert "qlcnic: Avoid " Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 38/49] Revert "niu: fix missing checks of niu_pci_eeprom_read" Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 39/49] ethernet: sun: niu: fix missing checks of niu_pci_eeprom_read() Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 40/49] net: stmicro: handle clk_prepare() failure during init Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 41/49] scsi: ufs: handle cleanup correctly on devm_reset_control_get error Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 42/49] net: rtlwifi: properly check for alloc_workqueue() failure Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 43/49] leds: lp5523: check return value of lp5xx_read and jump to cleanup code Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 44/49] qlcnic: Add null check after calling netdev_alloc_skb Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 45/49] video: hgafb: fix potential NULL pointer dereference Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 46/49] vgacon: Record video mode changes with VT_RESIZEX Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 47/49] vt: Fix character height handling " Greg Kroah-Hartman
2021-05-24 15:25 ` [PATCH 4.19 48/49] tty: vt: always invoke vc->vc_sw->con_resize callback Greg Kroah-Hartman
2021-05-24 15:26 ` [PATCH 4.19 49/49] x86/Xen: swap NX determination and GDT setup on BSP Greg Kroah-Hartman
2021-05-25 5:11 ` Juergen Gross
2021-05-25 6:55 ` Greg Kroah-Hartman
2021-05-24 22:05 ` [PATCH 4.19 00/49] 4.19.192-rc1 review Shuah Khan
2021-05-25 8:14 ` Naresh Kamboju
2021-05-25 14:20 ` Sudip Mukherjee
2021-05-25 14:32 ` Pavel Machek
2021-05-25 21:23 ` Guenter Roeck
2021-05-26 1:02 ` Samuel Zou
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