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 4.4 04/21] ALSA: echoaudio: add a check for ioremap_nocache
Date: Fri, 29 Mar 2019 20:56:32 -0400 [thread overview]
Message-ID: <20190330005649.28475-4-sashal@kernel.org> (raw)
In-Reply-To: <20190330005649.28475-1-sashal@kernel.org>
From: Kangjie Lu <kjlu@umn.edu>
[ Upstream commit 6ade657d6125ec3ec07f95fa51e28138aef6208f ]
In case ioremap_nocache fails, the fix releases chip and returns
an error code upstream 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/pci/echoaudio/echoaudio.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/sound/pci/echoaudio/echoaudio.c b/sound/pci/echoaudio/echoaudio.c
index 286f5e3686a3..d73ee11a32bd 100644
--- a/sound/pci/echoaudio/echoaudio.c
+++ b/sound/pci/echoaudio/echoaudio.c
@@ -1953,6 +1953,11 @@ static int snd_echo_create(struct snd_card *card,
}
chip->dsp_registers = (volatile u32 __iomem *)
ioremap_nocache(chip->dsp_registers_phys, sz);
+ if (!chip->dsp_registers) {
+ dev_err(chip->card->dev, "ioremap failed\n");
+ snd_echo_free(chip);
+ return -ENOMEM;
+ }
if (request_irq(pci->irq, snd_echo_interrupt, IRQF_SHARED,
KBUILD_MODNAME, chip)) {
--
2.19.1
next prev parent reply other threads:[~2019-03-30 1:00 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-30 0:56 [PATCH AUTOSEL 4.4 01/21] perf/core: Restore mmap record type correctly Sasha Levin
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 02/21] ext4: add missing brelse() in add_new_gdb_meta_bg() Sasha Levin
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 03/21] ext4: report real fs size after failed resize Sasha Levin
2019-03-30 0:56 ` Sasha Levin [this message]
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 05/21] ALSA: sb8: add a check for request_region Sasha Levin
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 06/21] IB/mlx4: Fix race condition between catas error reset and aliasguid flows Sasha Levin
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 07/21] mmc: davinci: remove extraneous __init annotation Sasha Levin
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 08/21] ALSA: opl3: fix mismatch between snd_opl3_drum_switch definition and declaration Sasha Levin
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 09/21] thermal/int340x_thermal: Add additional UUIDs Sasha Levin
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 10/21] thermal/int340x_thermal: fix mode setting Sasha Levin
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 11/21] tools/power turbostat: return the exit status of a command Sasha Levin
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 12/21] perf top: Fix error handling in cmd_top() Sasha Levin
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 13/21] perf evsel: Free evsel->counts in perf_evsel__exit() Sasha Levin
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 14/21] perf tests: Fix a memory leak of cpu_map object in the openat_syscall_event_on_all_cpus test Sasha Levin
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 15/21] perf tests: Fix a memory leak in test__perf_evsel__tp_sched_test() Sasha Levin
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 16/21] x86/hpet: Prevent potential NULL pointer dereference Sasha Levin
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 17/21] x86/cpu/cyrix: Use correct macros for Cyrix calls on Geode processors Sasha Levin
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 18/21] iommu/vt-d: Check capability before disabling protected memory Sasha Levin
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 19/21] x86/hw_breakpoints: Make default case in hw_breakpoint_arch_parse() return an error Sasha Levin
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 20/21] fix incorrect error code mapping for OBJECTID_NOT_FOUND Sasha Levin
2019-03-30 0:56 ` [PATCH AUTOSEL 4.4 21/21] ext4: prohibit fstrim in norecovery mode Sasha Levin
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