From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Kangjie Lu <kjlu@umn.edu>, Takashi Iwai <tiwai@suse.de>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH AUTOSEL 4.14 07/37] ALSA: sb8: add a check for request_region
Date: Fri, 29 Mar 2019 20:54:08 -0400 [thread overview]
Message-ID: <20190330005441.27540-7-sashal@kernel.org> (raw)
In-Reply-To: <20190330005441.27540-1-sashal@kernel.org>
From: Kangjie Lu <kjlu@umn.edu>
[ Upstream commit dcd0feac9bab901d5739de51b3f69840851f8919 ]
In case request_region fails, the fix returns an error code to
avoid NULL pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/isa/sb/sb8.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/sound/isa/sb/sb8.c b/sound/isa/sb/sb8.c
index d77dcba276b5..1eb8b61a185b 100644
--- a/sound/isa/sb/sb8.c
+++ b/sound/isa/sb/sb8.c
@@ -111,6 +111,10 @@ static int snd_sb8_probe(struct device *pdev, unsigned int dev)
/* block the 0x388 port to avoid PnP conflicts */
acard->fm_res = request_region(0x388, 4, "SoundBlaster FM");
+ if (!acard->fm_res) {
+ err = -EBUSY;
+ goto _err;
+ }
if (port[dev] != SNDRV_AUTO_PORT) {
if ((err = snd_sbdsp_create(card, port[dev], irq[dev],
--
2.19.1
next prev parent reply other threads:[~2019-03-30 1:04 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-30 0:54 [PATCH AUTOSEL 4.14 01/37] ARC: u-boot args: check that magic number is correct Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 02/37] arc: hsdk_defconfig: Enable CONFIG_BLK_DEV_RAM Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 03/37] perf/core: Restore mmap record type correctly Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 04/37] ext4: add missing brelse() in add_new_gdb_meta_bg() Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 05/37] ext4: report real fs size after failed resize Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 06/37] ALSA: echoaudio: add a check for ioremap_nocache Sasha Levin
2019-03-30 0:54 ` Sasha Levin [this message]
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 08/37] auxdisplay: hd44780: Fix memory leak on ->remove() Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 09/37] IB/mlx4: Fix race condition between catas error reset and aliasguid flows Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 10/37] mmc: davinci: remove extraneous __init annotation Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 11/37] ALSA: opl3: fix mismatch between snd_opl3_drum_switch definition and declaration Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 12/37] thermal/intel_powerclamp: fix __percpu declaration of worker_data Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 13/37] thermal: bcm2835: Fix crash in bcm2835_thermal_debugfs Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 14/37] thermal/int340x_thermal: Add additional UUIDs Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 15/37] thermal/int340x_thermal: fix mode setting Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 16/37] thermal/intel_powerclamp: fix truncated kthread name Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 17/37] scsi: iscsi: flush running unbind operations when removing a session Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 18/37] x86/mm: Don't leak kernel addresses Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 19/37] tools/power turbostat: return the exit status of a command Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 20/37] perf list: Don't forget to drop the reference to the allocated thread_map Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 21/37] perf config: Fix an error in the config template documentation Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 22/37] perf config: Fix a memory leak in collect_config() Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 23/37] perf build-id: Fix memory leak in print_sdt_events() Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 24/37] perf top: Fix error handling in cmd_top() Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 25/37] perf hist: Add missing map__put() in error case Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 26/37] perf evsel: Free evsel->counts in perf_evsel__exit() Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 27/37] perf tests: Fix a memory leak of cpu_map object in the openat_syscall_event_on_all_cpus test Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 28/37] perf tests: Fix memory leak by expr__find_other() in test__expr() Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 29/37] perf tests: Fix a memory leak in test__perf_evsel__tp_sched_test() Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 30/37] irqchip/mbigen: Don't clear eventid when freeing an MSI Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 31/37] x86/hpet: Prevent potential NULL pointer dereference Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 32/37] x86/cpu/cyrix: Use correct macros for Cyrix calls on Geode processors Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 33/37] drm/nouveau/debugfs: Fix check of pm_runtime_get_sync failure Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 34/37] iommu/vt-d: Check capability before disabling protected memory Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 35/37] x86/hw_breakpoints: Make default case in hw_breakpoint_arch_parse() return an error Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 36/37] fix incorrect error code mapping for OBJECTID_NOT_FOUND Sasha Levin
2019-03-30 0:54 ` [PATCH AUTOSEL 4.14 37/37] ext4: prohibit fstrim in norecovery mode Sasha Levin
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