* [PATCH 00/61] treewide: Use IS_ERR_OR_NULL over manual NULL check - refactor
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Julia Lawall, Nicolas Palix, Chris Mason, David Sterba,
Ilya Dryomov, Alex Markuze, Viacheslav Dubeyko, Theodore Ts'o,
Andreas Dilger, Steve French, Paulo Alcantara, Ronnie Sahlberg,
Shyam Prasad N, Tom Talpey, Bharath SM, Eric Van Hensbergen,
Latchesar Ionkov, Dominique Martinet, Christian Schoenebeck,
Gao Xiang, Chao Yu, Yue Hu, Jeffle Xu, Sandeep Dhavale, Hongbo Li,
Chunhai Guo, Miklos Szeredi, Konstantin Komarov,
Andreas Gruenbacher, Kees Cook, Tony Luck, Guilherme G. Piccoli,
Jan Kara, Phillip Lougher, Alexander Viro, Christian Brauner,
Jan Kara, Steven Rostedt, Masami Hiramatsu, Mathieu Desnoyers,
Tejun Heo, David Vernet, Andrea Righi, Changwoo Min, Ingo Molnar,
Peter Zijlstra, Juri Lelli, Vincent Guittot, Dietmar Eggemann,
Ben Segall, Mel Gorman, Valentin Schneider, Luis Chamberlain,
Petr Pavlu, Daniel Gomez, Sami Tolvanen, Aaron Tomlin,
Sylwester Nawrocki, Liam Girdwood, Mark Brown, Jaroslav Kysela,
Takashi Iwai, Max Filippov, Paolo Bonzini, John Johansen,
Paul Moore, James Morris, Serge E. Hallyn, Andrew Morton,
Alasdair Kergon, Mike Snitzer, Mikulas Patocka,
Benjamin Marzinski, David S. Miller, David Ahern, Eric Dumazet,
Jakub Kicinski, Paolo Abeni, Simon Horman, Marcel Holtmann,
Johan Hedberg, Luiz Augusto von Dentz, Alexei Starovoitov,
Daniel Borkmann, Jesper Dangaard Brouer, John Fastabend,
Stanislav Fomichev, Jamal Hadi Salim, Jiri Pirko,
Marcelo Ricardo Leitner, Xin Long, Trond Myklebust,
Anna Schumaker, Chuck Lever, Jeff Layton, NeilBrown,
Olga Kornievskaia, Dai Ngo, Jon Maloy, Johannes Berg,
Catalin Marinas, Russell King, John Crispin, Thomas Bogendoerfer,
Yoshinori Sato, Rich Felker, John Paul Adrian Glaubitz,
Andrzej Hajda, Neil Armstrong, Robert Foss, Laurent Pinchart,
Jonas Karlman, Jernej Skrabec, Maarten Lankhorst, Maxime Ripard,
Thomas Zimmermann, David Airlie, Simona Vetter, Zhenyu Wang,
Zhi Wang, Jani Nikula, Joonas Lahtinen, Rodrigo Vivi,
Tvrtko Ursulin, Alex Deucher, Christian König, Sandy Huang,
Heiko Stübner, Andy Yan, Igor Russkikh, Andrew Lunn,
Pavan Chebbi, Michael Chan, Potnuri Bharat Teja, Tony Nguyen,
Przemek Kitszel, Taras Chornyi, Maxime Coquelin, Alexandre Torgue,
Iyappan Subramanian, Keyur Chudgar, Quan Nguyen, Heiner Kallweit,
Marc Zyngier, Thomas Gleixner, Andrew Lunn, Gregory Clement,
Sebastian Hesselbarth, Vinod Koul, Linus Walleij, Ulf Hansson,
Heiko Carstens, Vasily Gorbik, Alexander Gordeev,
Christian Borntraeger, Sven Schnelle, Martin K. Petersen,
Eduardo Valentin, Keerthy, Rafael J. Wysocki, Daniel Lezcano,
Zhang Rui, Lukasz Luba, Alex Williamson, Mark Greer,
Miquel Raynal, Richard Weinberger, Vignesh Raghavendra,
Shuah Khan, Kieran Bingham, Mauro Carvalho Chehab, Joerg Roedel,
Will Deacon, Robin Murphy, Lee Jones, Pavel Machek, Dave Penkler,
K. Y. Srinivasan, Haiyang Zhang, Wei Liu, Dexuan Cui, Long Li,
Justin Sanders, Jens Axboe, Georgi Djakov, Michael Turquette,
Stephen Boyd, Philipp Zabel, Borislav Petkov, Dave Hansen, x86,
H. Peter Anvin, Pali Rohár, Dmitry Torokhov
While doing some static code analysis I stumbled over a common pattern,
where IS_ERR() is combined with a NULL check. For that there is
IS_ERR_OR_NULL().
I've written a Coccinelle patch to find and patch those instances.
The patches follow grouped by subsystem.
Patches 55-58 may be dropped as they have a (minor?) semantic change:
They use WARN_ON() or WARN_ON_ONCE(), but only in the IS_ERR() path, not
for the NULL check. Iff it is okay to print the warning also for NULL,
then the patches can be applied.
While generating the patch set `checkpatch` complained about mixing
[un]likely() with IS_ERR_OR_NULL(), which already uses likely()
internally. I found and fixed several locations, where that combination
has been used.
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
Philipp Hahn (61):
Coccinelle: Prefer IS_ERR_OR_NULL over manual NULL check
btrfs: Prefer IS_ERR_OR_NULL over manual NULL check
ceph: Prefer IS_ERR_OR_NULL over manual NULL check
ext4: Prefer IS_ERR_OR_NULL over manual NULL check
smb: Prefer IS_ERR_OR_NULL over manual NULl check
9p: Prefer IS_ERR_OR_NULL over manual NULL check
erofs: Prefer IS_ERR_OR_NULL over manual NULL check
fuse: Prefer IS_ERR_OR_NULL over manual NULL check
ntfs3: Prefer IS_ERR_OR_NULL over manual NULL check
gfs2: Prefer IS_ERR_OR_NULL over manual NULL check
pstore: Prefer IS_ERR_OR_NULL over manual NULL check
quota: Prefer IS_ERR_OR_NULL over manual NULL check
squashfs: Prefer IS_ERR_OR_NULL over manual NULL check
seq_file: Prefer IS_ERR_OR_NULL over manual NULL check
trace: Prefer IS_ERR_OR_NULL over manual NULL check
sched: Prefer IS_ERR_OR_NULL over manual NULL check
module: Prefer IS_ERR_OR_NULL over manual NULL check
sound: Prefer IS_ERR_OR_NULL over manual NULL check
kvm: Prefer IS_ERR_OR_NULL over manual NULL check
apparmor: Prefer IS_ERR_OR_NULL over manual NULL check
lib/test: Prefer IS_ERR_OR_NULL over manual NULL check
md: Prefer IS_ERR_OR_NULL over manual NULL check
net/ipv6: Prefer IS_ERR_OR_NULL over manual NULL check
net/9p: Prefer IS_ERR_OR_NULL over manual NULL check
net/bluetooth: Prefer IS_ERR_OR_NULL over manual NULL check
net/core: Prefer IS_ERR_OR_NULL over manual NULL check
net/netlink: Prefer IS_ERR_OR_NULL over manual NULL check
net/sched: Prefer IS_ERR_OR_NULL over manual NULL check
net/sctp: Prefer IS_ERR_OR_NULL over manual NULL check
net/sunrpc: Prefer IS_ERR_OR_NULL over manual NULL check
net/tipc: Prefer IS_ERR_OR_NULL over manual NULL check
net/wireless: Prefer IS_ERR_OR_NULL over manual NULL check
mm: Prefer IS_ERR_OR_NULL over manual NULL check
arch/arm: Prefer IS_ERR_OR_NULL over manual NULL check
arch/mips: Prefer IS_ERR_OR_NULL over manual NULL check
arch/sh: Prefer IS_ERR_OR_NULL over manual NULL check
drm: Prefer IS_ERR_OR_NULL over manual NULL check
net: Prefer IS_ERR_OR_NULL over manual NULL check
irqchip: Prefer IS_ERR_OR_NULL over manual NULL check
phy: Prefer IS_ERR_OR_NULL over manual NULL check
pinctrl: Prefer IS_ERR_OR_NULL over manual NULL check
pmdomain: Prefer IS_ERR_OR_NULL over manual NULL check
s390: Prefer IS_ERR_OR_NULL over manual NULL check
target: Prefer IS_ERR_OR_NULL over manual NULL check
thermal: Prefer IS_ERR_OR_NULL over manual NULL check
vfio: Prefer IS_ERR_OR_NULL over manual NULL check
nfc: Prefer IS_ERR_OR_NULL over manual NULL check
mtd: Prefer IS_ERR_OR_NULL over manual NULL check
media: Prefer IS_ERR_OR_NULL over manual NULL check
iommu: Prefer IS_ERR_OR_NULL over manual NULL check
leds: Prefer IS_ERR_OR_NULL over manual NULL check
gpib: Prefer IS_ERR_OR_NULL over manual NULL check
hyperv: Prefer IS_ERR_OR_NULL over manual NULL check
aoe: Prefer IS_ERR_OR_NULL over manual NULL check
interconnect: Prefer IS_ERR_OR_NULL over manual NULL check
clk: Prefer IS_ERR_OR_NULL over manual NULL check
reset: Prefer IS_ERR_OR_NULL over manual NULL check
arch/x86: Prefer IS_ERR_OR_NULL over manual NULL check
debugobjects: Drop likely() around !IS_ERR_OR_NULL()
Input alps: Drop unlikely() around IS_ERR_OR_NULL()
file: Drop unlikely() around IS_ERR_OR_NULL()
arch/arm/common/bL_switcher.c | 2 +-
arch/mips/lantiq/clk.c | 2 +-
arch/sh/mm/ioremap.c | 2 +-
arch/x86/kernel/callthunks.c | 2 +-
arch/x86/kernel/irq.c | 2 +-
drivers/block/aoe/aoecmd.c | 2 +-
drivers/clk/clk.c | 4 +-
drivers/clocksource/timer-pxa.c | 2 +-
drivers/gpib/common/iblib.c | 2 +-
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 2 +-
drivers/gpu/drm/drm_sysfs.c | 2 +-
drivers/gpu/drm/i915/gvt/scheduler.c | 4 +-
drivers/gpu/drm/radeon/radeon_test.c | 2 +-
drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 2 +-
drivers/hv/mshv_eventfd.c | 4 +-
drivers/input/mouse/alps.c | 2 +-
drivers/interconnect/core.c | 2 +-
drivers/iommu/omap-iommu.c | 2 +-
drivers/irqchip/irq-gic-v3.c | 2 +-
drivers/irqchip/irq-mvebu-odmi.c | 2 +-
drivers/leds/trigger/ledtrig-tty.c | 2 +-
drivers/md/dm-cache-metadata.c | 2 +-
drivers/md/dm-crypt.c | 4 +-
drivers/media/test-drivers/vimc/vimc-streamer.c | 2 +-
drivers/mtd/nand/raw/gpio.c | 10 +-
drivers/net/ethernet/aquantia/atlantic/aq_ring.c | 2 +-
drivers/net/ethernet/broadcom/tg3.c | 2 +-
.../net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c | 3 +-
drivers/net/ethernet/intel/ice/devlink/devlink.c | 2 +-
.../ethernet/marvell/prestera/prestera_router.c | 2 +-
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
drivers/net/mdio/mdio-xgene.c | 2 +-
drivers/net/usb/r8152.c | 2 +-
drivers/nfc/trf7970a.c | 2 +-
drivers/phy/phy-core.c | 2 +-
drivers/pinctrl/core.c | 2 +-
drivers/pmdomain/rockchip/pm-domains.c | 2 +-
drivers/reset/core.c | 2 +-
drivers/s390/char/tape_class.c | 2 +-
drivers/target/target_core_fabric_configfs.c | 6 +-
drivers/thermal/ti-soc-thermal/ti-thermal-common.c | 2 +-
drivers/vfio/vfio_main.c | 2 +-
fs/9p/fid.h | 2 +-
fs/btrfs/inode.c | 2 +-
fs/btrfs/transaction.c | 2 +-
fs/btrfs/tree-log.c | 2 +-
fs/btrfs/uuid-tree.c | 2 +-
fs/ceph/dir.c | 2 +-
fs/ceph/snap.c | 2 +-
fs/erofs/zdata.c | 2 +-
fs/ext4/fast_commit.c | 2 +-
fs/ext4/mballoc.c | 2 +-
fs/ext4/namei.c | 2 +-
fs/ext4/symlink.c | 2 +-
fs/fuse/dir.c | 2 +-
fs/gfs2/glock.c | 2 +-
fs/ntfs3/fsntfs.c | 8 +-
fs/pstore/zone.c | 2 +-
fs/quota/quota.c | 2 +-
fs/seq_file.c | 4 +-
fs/smb/client/cifsglob.h | 2 +-
fs/smb/client/connect.c | 2 +-
fs/smb/client/readdir.c | 2 +-
fs/squashfs/cache.c | 2 +-
include/linux/file.h | 2 +-
include/net/9p/client.h | 2 +-
kernel/module/main.c | 2 +-
kernel/sched/ext.c | 2 +-
kernel/trace/fprobe.c | 2 +-
kernel/trace/kprobe_event_gen_test.c | 2 +-
kernel/trace/trace_events_hist.c | 2 +-
lib/debugobjects.c | 2 +-
lib/test_firmware.c | 2 +-
lib/test_kmod.c | 4 +-
mm/kmemleak.c | 16 +--
net/9p/trans_rdma.c | 8 +-
net/bluetooth/mgmt.c | 6 +-
net/core/xdp.c | 2 +-
net/ipv6/ila/ila_xlat.c | 2 +-
net/ipv6/ndisc.c | 2 +-
net/netlink/af_netlink.c | 2 +-
net/sched/cls_api.c | 6 +-
net/sctp/socket.c | 2 +-
net/sunrpc/xprtrdma/svc_rdma_transport.c | 12 +-
net/tipc/socket.c | 2 +-
net/wireless/reg.c | 2 +-
scripts/coccinelle/api/is_err_or_null.cocci | 125 +++++++++++++++++++++
security/apparmor/apparmorfs.c | 2 +-
sound/soc/samsung/i2s.c | 4 +-
sound/soc/xtensa/xtfpga-i2s.c | 2 +-
virt/kvm/eventfd.c | 4 +-
91 files changed, 251 insertions(+), 127 deletions(-)
---
base-commit: 1f318b96cc84d7c2ab792fcc0bfd42a7ca890681
change-id: 20260305-b4-is_err_or_null-59998a7d03c4
Best regards,
--
Philipp Hahn <phahn-oss@avm.de>
^ permalink raw reply
* [PATCH 22/61] md: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Alasdair Kergon, Mike Snitzer, Mikulas Patocka,
Benjamin Marzinski
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Alasdair Kergon <agk@redhat.com>
To: Mike Snitzer <snitzer@kernel.org>
To: Mikulas Patocka <mpatocka@redhat.com>
To: Benjamin Marzinski <bmarzins@redhat.com>
Cc: dm-devel@lists.linux.dev
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
drivers/md/dm-cache-metadata.c | 2 +-
drivers/md/dm-crypt.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/md/dm-cache-metadata.c b/drivers/md/dm-cache-metadata.c
index 57158c02d096ed38759d563bf27e7f1b3fe58ccc..32f7d25b83a181a30a78c663d48f7882cb97f7b5 100644
--- a/drivers/md/dm-cache-metadata.c
+++ b/drivers/md/dm-cache-metadata.c
@@ -1819,7 +1819,7 @@ int dm_cache_metadata_abort(struct dm_cache_metadata *cmd)
WRITE_UNLOCK(cmd);
dm_block_manager_destroy(old_bm);
out:
- if (new_bm && !IS_ERR(new_bm))
+ if (!IS_ERR_OR_NULL(new_bm))
dm_block_manager_destroy(new_bm);
return r;
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 54823341c9fda46b2d8e13428cbd51f3edf642d5..05eae3d3c7df6baebd0b7a4219f7b6938f6e7f87 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -2295,7 +2295,7 @@ static void crypt_free_tfms_aead(struct crypt_config *cc)
if (!cc->cipher_tfm.tfms_aead)
return;
- if (cc->cipher_tfm.tfms_aead[0] && !IS_ERR(cc->cipher_tfm.tfms_aead[0])) {
+ if (!IS_ERR_OR_NULL(cc->cipher_tfm.tfms_aead[0])) {
crypto_free_aead(cc->cipher_tfm.tfms_aead[0]);
cc->cipher_tfm.tfms_aead[0] = NULL;
}
@@ -2312,7 +2312,7 @@ static void crypt_free_tfms_skcipher(struct crypt_config *cc)
return;
for (i = 0; i < cc->tfms_count; i++)
- if (cc->cipher_tfm.tfms[i] && !IS_ERR(cc->cipher_tfm.tfms[i])) {
+ if (!IS_ERR_OR_NULL(cc->cipher_tfm.tfms[i])) {
crypto_free_skcipher(cc->cipher_tfm.tfms[i]);
cc->cipher_tfm.tfms[i] = NULL;
}
--
2.43.0
^ permalink raw reply related
* [PATCH 12/61] quota: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Jan Kara
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Jan Kara <jack@suse.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
fs/quota/quota.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index 33bacd70758007129e0375bab44d7431195ec441..2e09fc247d0cf45b9e83a4f8a0be7ea694c8c2a1 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -965,7 +965,7 @@ SYSCALL_DEFINE4(quotactl, unsigned int, cmd, const char __user *, special,
else
drop_super_exclusive(sb);
out:
- if (pathp && !IS_ERR(pathp))
+ if (!IS_ERR_OR_NULL(pathp))
path_put(pathp);
return ret;
}
--
2.43.0
^ permalink raw reply related
* [PATCH 08/61] fuse: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Miklos Szeredi
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: linux-fsdevel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
fs/fuse/dir.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 7ac6b232ef12323e3afb97b98301f623bce917a4..7b39c013027bd9c4ba6f080bfc9b3ec22bc2dd4a 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1599,7 +1599,7 @@ int fuse_reverse_inval_entry(struct fuse_conn *fc, u64 parent_nodeid,
goto put_parent;
while (!entry) {
struct dentry *child = try_lookup_noperm(name, dir);
- if (!child || IS_ERR(child))
+ if (IS_ERR_OR_NULL(child))
goto put_parent;
entry = start_removing_dentry(dir, child);
dput(child);
--
2.43.0
^ permalink raw reply related
* [PATCH 25/61] net/bluetooth: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Marcel Holtmann, Johan Hedberg, Luiz Augusto von Dentz
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Marcel Holtmann <marcel@holtmann.org>
To: Johan Hedberg <johan.hedberg@gmail.com>
To: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
Cc: linux-bluetooth@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
net/bluetooth/mgmt.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index a7238fd3b03bb54f39af1afee74dc1acd931c324..06d2da67bbe14e17ee478aa939de26526c333d91 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -4169,7 +4169,7 @@ static void set_default_phy_complete(struct hci_dev *hdev, void *data, int err)
mgmt_phy_configuration_changed(hdev, cmd->sk);
}
- if (skb && !IS_ERR(skb))
+ if (!IS_ERR_OR_NULL(skb))
kfree_skb(skb);
mgmt_pending_free(cmd);
@@ -5730,7 +5730,7 @@ static void read_local_oob_data_complete(struct hci_dev *hdev, void *data,
MGMT_STATUS_SUCCESS, &mgmt_rp, rp_size);
remove:
- if (skb && !IS_ERR(skb))
+ if (!IS_ERR_OR_NULL(skb))
kfree_skb(skb);
mgmt_pending_free(cmd);
@@ -8277,7 +8277,7 @@ static void read_local_oob_ext_data_complete(struct hci_dev *hdev, void *data,
mgmt_rp, sizeof(*mgmt_rp) + eir_len,
HCI_MGMT_OOB_DATA_EVENTS, cmd->sk);
done:
- if (skb && !IS_ERR(skb))
+ if (!IS_ERR_OR_NULL(skb))
kfree_skb(skb);
kfree(mgmt_rp);
--
2.43.0
^ permalink raw reply related
* [PATCH 15/61] trace: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Steven Rostedt, Masami Hiramatsu, Mathieu Desnoyers
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Steven Rostedt <rostedt@goodmis.org>
To: Masami Hiramatsu <mhiramat@kernel.org>
To: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-trace-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
kernel/trace/fprobe.c | 2 +-
kernel/trace/kprobe_event_gen_test.c | 2 +-
kernel/trace/trace_events_hist.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/kernel/trace/fprobe.c b/kernel/trace/fprobe.c
index dcadf1d23b8a31f571392d0c49cbd22df1716b4f..a94ce810d83b90f55d1178a9bd29c78fd068df4c 100644
--- a/kernel/trace/fprobe.c
+++ b/kernel/trace/fprobe.c
@@ -607,7 +607,7 @@ static int fprobe_module_callback(struct notifier_block *nb,
do {
rhashtable_walk_start(&iter);
- while ((node = rhashtable_walk_next(&iter)) && !IS_ERR(node))
+ while (!IS_ERR_OR_NULL((node = rhashtable_walk_next(&iter))))
fprobe_remove_node_in_module(mod, node, &alist);
rhashtable_walk_stop(&iter);
diff --git a/kernel/trace/kprobe_event_gen_test.c b/kernel/trace/kprobe_event_gen_test.c
index 5a4b722b50451bfdee42769a6d3be39c055690d1..a1735ca273f0b756aa1fcfcdab30ddad9bc51c5f 100644
--- a/kernel/trace/kprobe_event_gen_test.c
+++ b/kernel/trace/kprobe_event_gen_test.c
@@ -75,7 +75,7 @@ static struct trace_event_file *gen_kretprobe_test;
static bool trace_event_file_is_valid(struct trace_event_file *input)
{
- return input && !IS_ERR(input);
+ return !IS_ERR_OR_NULL(input);
}
/*
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index 73ea180cad555898693e92ee397a1c9493c7c167..59df215e1dfd9349eca1c0823ed709ec7285f766 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -3973,7 +3973,7 @@ trace_action_create_field_var(struct hist_trigger_data *hist_data,
*/
field_var = create_target_field_var(hist_data, system, event, var);
- if (field_var && !IS_ERR(field_var)) {
+ if (!IS_ERR_OR_NULL(field_var)) {
save_field_var(hist_data, field_var);
hist_field = field_var->var;
} else {
--
2.43.0
^ permalink raw reply related
* [PATCH 35/61] arch/mips: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:49 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: John Crispin, Thomas Bogendoerfer
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: John Crispin <john@phrozen.org>
To: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
arch/mips/lantiq/clk.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/mips/lantiq/clk.c b/arch/mips/lantiq/clk.c
index 2d5a0bcb0cec156dc5f0daedbdd7c56ff8d62ca4..4ae271a887c39163370d070b49d9e5152a709bd7 100644
--- a/arch/mips/lantiq/clk.c
+++ b/arch/mips/lantiq/clk.c
@@ -60,7 +60,7 @@ EXPORT_SYMBOL_GPL(clk_get_ppe);
static inline int clk_good(struct clk *clk)
{
- return clk && !IS_ERR(clk);
+ return !IS_ERR_OR_NULL(clk);
}
unsigned long clk_get_rate(struct clk *clk)
--
2.43.0
^ permalink raw reply related
* [PATCH 19/61] kvm: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Paolo Bonzini
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
virt/kvm/eventfd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
index 0e8b8a2c5b791243e230a91124d32fcc0250a0c6..4099dd11626009a3497ad09994ba6bc1b8211536 100644
--- a/virt/kvm/eventfd.c
+++ b/virt/kvm/eventfd.c
@@ -508,10 +508,10 @@ kvm_irqfd_assign(struct kvm *kvm, struct kvm_irqfd *args)
if (irqfd->resampler)
irqfd_resampler_shutdown(irqfd);
- if (resamplefd && !IS_ERR(resamplefd))
+ if (!IS_ERR_OR_NULL(resamplefd))
eventfd_ctx_put(resamplefd);
- if (eventfd && !IS_ERR(eventfd))
+ if (!IS_ERR_OR_NULL(eventfd))
eventfd_ctx_put(eventfd);
out:
--
2.43.0
^ permalink raw reply related
* [PATCH 31/61] net/tipc: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Jon Maloy, David S. Miller, Eric Dumazet, Jakub Kicinski,
Paolo Abeni, Simon Horman
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Jon Maloy <jmaloy@redhat.com>
To: "David S. Miller" <davem@davemloft.net>
To: Eric Dumazet <edumazet@google.com>
To: Jakub Kicinski <kuba@kernel.org>
To: Paolo Abeni <pabeni@redhat.com>
To: Simon Horman <horms@kernel.org>
Cc: netdev@vger.kernel.org
Cc: tipc-discussion@lists.sourceforge.net
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
net/tipc/socket.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 4c618c2b871db681e69f7aec8f660d6130a13346..0d9cb21ffbf1539b7740e76521e3aac5fde322e3 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -2971,7 +2971,7 @@ void tipc_sk_reinit(struct net *net)
do {
rhashtable_walk_start(&iter);
- while ((tsk = rhashtable_walk_next(&iter)) && !IS_ERR(tsk)) {
+ while (!IS_ERR_OR_NULL((tsk = rhashtable_walk_next(&iter)))) {
sock_hold(&tsk->sk);
rhashtable_walk_stop(&iter);
lock_sock(&tsk->sk);
--
2.43.0
^ permalink raw reply related
* [PATCH 17/61] module: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Luis Chamberlain, Petr Pavlu, Daniel Gomez, Sami Tolvanen,
Aaron Tomlin
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Luis Chamberlain <mcgrof@kernel.org>
To: Petr Pavlu <petr.pavlu@suse.com>
To: Daniel Gomez <da.gomez@kernel.org>
To: Sami Tolvanen <samitolvanen@google.com>
To: Aaron Tomlin <atomlin@atomlin.com>
Cc: linux-modules@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
kernel/module/main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/module/main.c b/kernel/module/main.c
index c3ce106c70af165e2dc1a3c79f5a074a5c3e3d34..7f62f0620dcd75960e431f7af3d1cadf4cc41e4b 100644
--- a/kernel/module/main.c
+++ b/kernel/module/main.c
@@ -1551,7 +1551,7 @@ static int simplify_symbols(struct module *mod, const struct load_info *info)
case SHN_UNDEF:
ksym = resolve_symbol_wait(mod, info, name);
/* Ok if resolved. */
- if (ksym && !IS_ERR(ksym)) {
+ if (!IS_ERR_OR_NULL(ksym)) {
sym[i].st_value = kernel_symbol_value(ksym);
break;
}
--
2.43.0
^ permalink raw reply related
* [PATCH 21/61] lib/test: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Andrew Morton, Luis Chamberlain, Petr Pavlu, Daniel Gomez,
Sami Tolvanen, Aaron Tomlin
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Andrew Morton <akpm@linux-foundation.org>
To: Luis Chamberlain <mcgrof@kernel.org>
To: Petr Pavlu <petr.pavlu@suse.com>
To: Daniel Gomez <da.gomez@kernel.org>
To: Sami Tolvanen <samitolvanen@google.com>
To: Aaron Tomlin <atomlin@atomlin.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-modules@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
lib/test_firmware.c | 2 +-
lib/test_kmod.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/lib/test_firmware.c b/lib/test_firmware.c
index b471d720879a70c0db82e605960abe69de28ab4b..fc3177927a02e2d7849915309048529395ece0f8 100644
--- a/lib/test_firmware.c
+++ b/lib/test_firmware.c
@@ -955,7 +955,7 @@ static ssize_t trigger_batched_requests_store(struct device *dev,
init_completion(&req->completion);
req->task = kthread_run(test_fw_run_batch_request, req,
"%s-%u", KBUILD_MODNAME, req->idx);
- if (!req->task || IS_ERR(req->task)) {
+ if (IS_ERR_OR_NULL(req->task)) {
pr_err("Setting up thread %u failed\n", req->idx);
req->task = NULL;
rc = -ENOMEM;
diff --git a/lib/test_kmod.c b/lib/test_kmod.c
index f0dd092860ea6f9c69a71e10cb1c8b071b1cd1b7..f44a181f6f1ab53cf95a0a0b598b88cb5f8f369d 100644
--- a/lib/test_kmod.c
+++ b/lib/test_kmod.c
@@ -327,7 +327,7 @@ static int try_one_request(struct kmod_test_device *test_dev, unsigned int idx)
info->task_sync = kthread_run(run_request, info, "%s-%u",
KBUILD_MODNAME, idx);
- if (!info->task_sync || IS_ERR(info->task_sync)) {
+ if (IS_ERR_OR_NULL(info->task_sync)) {
test_dev->test_is_oom = true;
dev_err(test_dev->dev, "Setting up thread %u failed\n", idx);
info->task_sync = NULL;
@@ -358,7 +358,7 @@ static void test_dev_kmod_stop_tests(struct kmod_test_device *test_dev)
for (i=0; i < config->num_threads; i++) {
info = &test_dev->info[i];
- if (info->task_sync && !IS_ERR(info->task_sync)) {
+ if (!IS_ERR_OR_NULL(info->task_sync)) {
dev_info(test_dev->dev,
"Stopping still-running thread %i\n", i);
kthread_stop(info->task_sync);
--
2.43.0
^ permalink raw reply related
* [PATCH 14/61] seq_file: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Alexander Viro, Christian Brauner, Jan Kara
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Alexander Viro <viro@zeniv.linux.org.uk>
To: Christian Brauner <brauner@kernel.org>
To: Jan Kara <jack@suse.cz>
Cc: linux-fsdevel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
fs/seq_file.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/seq_file.c b/fs/seq_file.c
index 4745db2a34d12b1084cb059a667c367f4fb56dad..da30cbd6485ca8eff6c2572eab10659c694387d2 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -226,7 +226,7 @@ ssize_t seq_read_iter(struct kiocb *iocb, struct iov_iter *iter)
p = m->op->start(m, &m->index);
while (1) {
err = PTR_ERR(p);
- if (!p || IS_ERR(p)) // EOF or an error
+ if (IS_ERR_OR_NULL(p)) // EOF or an error
break;
err = m->op->show(m, p);
if (err < 0) // hard error
@@ -266,7 +266,7 @@ ssize_t seq_read_iter(struct kiocb *iocb, struct iov_iter *iter)
m->op->next);
m->index++;
}
- if (!p || IS_ERR(p)) // no next record for us
+ if (IS_ERR_OR_NULL(p)) // no next record for us
break;
if (m->count >= iov_iter_count(iter))
break;
--
2.43.0
^ permalink raw reply related
* [PATCH 05/61] smb: Prefer IS_ERR_OR_NULL over manual NULl check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Steve French, Paulo Alcantara, Ronnie Sahlberg, Shyam Prasad N,
Tom Talpey, Bharath SM
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Steve French <sfrench@samba.org>
To: Paulo Alcantara <pc@manguebit.org>
To: Ronnie Sahlberg <ronniesahlberg@gmail.com>
To: Shyam Prasad N <sprasad@microsoft.com>
To: Tom Talpey <tom@talpey.com>
To: Bharath SM <bharathsm@microsoft.com>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
fs/smb/client/cifsglob.h | 2 +-
fs/smb/client/connect.c | 2 +-
fs/smb/client/readdir.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h
index 6f9b6c72962b09260542b711d4c64e7dc42c7845..fb731b2609465ebe50742936b458aba210ecbd4a 100644
--- a/fs/smb/client/cifsglob.h
+++ b/fs/smb/client/cifsglob.h
@@ -1336,7 +1336,7 @@ void cifs_put_tlink(struct tcon_link *tlink);
static inline struct tcon_link *
cifs_get_tlink(struct tcon_link *tlink)
{
- if (tlink && !IS_ERR(tlink))
+ if (!IS_ERR_OR_NULL(tlink))
atomic_inc(&tlink->tl_count);
return tlink;
}
diff --git a/fs/smb/client/connect.c b/fs/smb/client/connect.c
index 3bad2c5c523dbd1d4b1ab253567984612be0f348..aa12d327894b270b59ea30be0e6d77b4188fc98f 100644
--- a/fs/smb/client/connect.c
+++ b/fs/smb/client/connect.c
@@ -2895,7 +2895,7 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb3_fs_context *ctx)
void
cifs_put_tlink(struct tcon_link *tlink)
{
- if (!tlink || IS_ERR(tlink))
+ if (IS_ERR_OR_NULL(tlink))
return;
if (!atomic_dec_and_test(&tlink->tl_count) ||
diff --git a/fs/smb/client/readdir.c b/fs/smb/client/readdir.c
index be22bbc4a65a03ec64b87d8505d1496279f22efc..3e9260cca196ea8ab17aad82c4824ec5e468e2e7 100644
--- a/fs/smb/client/readdir.c
+++ b/fs/smb/client/readdir.c
@@ -165,7 +165,7 @@ cifs_prime_dcache(struct dentry *parent, struct qstr *name,
inode = ERR_PTR(-ENOMEM);
alias = d_splice_alias(inode, dentry);
d_lookup_done(dentry);
- if (alias && !IS_ERR(alias))
+ if (!IS_ERR_OR_NULL(alias))
dput(alias);
}
dput(dentry);
--
2.43.0
^ permalink raw reply related
* [PATCH 38/61] net: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:49 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Igor Russkikh, Andrew Lunn, David S. Miller, Eric Dumazet,
Jakub Kicinski, Paolo Abeni, Pavan Chebbi, Michael Chan,
Potnuri Bharat Teja, Tony Nguyen, Przemek Kitszel, Taras Chornyi,
Maxime Coquelin, Alexandre Torgue, Iyappan Subramanian,
Keyur Chudgar, Quan Nguyen, Heiner Kallweit, Russell King
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Igor Russkikh <irusskikh@marvell.com>
To: Andrew Lunn <andrew+netdev@lunn.ch>
To: "David S. Miller" <davem@davemloft.net>
To: Eric Dumazet <edumazet@google.com>
To: Jakub Kicinski <kuba@kernel.org>
To: Paolo Abeni <pabeni@redhat.com>
To: Pavan Chebbi <pavan.chebbi@broadcom.com>
To: Michael Chan <mchan@broadcom.com>
To: Potnuri Bharat Teja <bharat@chelsio.com>
To: Tony Nguyen <anthony.l.nguyen@intel.com>
To: Przemek Kitszel <przemyslaw.kitszel@intel.com>
To: Taras Chornyi <taras.chornyi@plvision.eu>
To: Maxime Coquelin <mcoquelin.stm32@gmail.com>
To: Alexandre Torgue <alexandre.torgue@foss.st.com>
To: Iyappan Subramanian <iyappan@os.amperecomputing.com>
To: Keyur Chudgar <keyur@os.amperecomputing.com>
To: Quan Nguyen <quan@os.amperecomputing.com>
To: Heiner Kallweit <hkallweit1@gmail.com>
To: Russell King <linux@armlinux.org.uk>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: intel-wired-lan@lists.osuosl.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-usb@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
drivers/net/ethernet/aquantia/atlantic/aq_ring.c | 2 +-
drivers/net/ethernet/broadcom/tg3.c | 2 +-
drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c | 3 +--
drivers/net/ethernet/intel/ice/devlink/devlink.c | 2 +-
drivers/net/ethernet/marvell/prestera/prestera_router.c | 2 +-
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +-
drivers/net/mdio/mdio-xgene.c | 2 +-
drivers/net/usb/r8152.c | 2 +-
8 files changed, 8 insertions(+), 9 deletions(-)
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
index e270327e47fd804cc8ee5cfd53ed1b993c955c41..43edef35c4b1ff606b2f1519a07fad4c9a990ad4 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
@@ -810,7 +810,7 @@ static int __aq_ring_xdp_clean(struct aq_ring_s *rx_ring,
}
skb = aq_xdp_run_prog(aq_nic, &xdp, rx_ring, buff);
- if (IS_ERR(skb) || !skb)
+ if (IS_ERR_OR_NULL(skb))
continue;
if (ptp_hwtstamp_len > 0)
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index 2328fce336447eb4a796f9300ccc0ab536ff0a35..8ed79f34f03d81184dcc12e6eaff009cb8f7756e 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -7943,7 +7943,7 @@ static int tg3_tso_bug(struct tg3 *tp, struct tg3_napi *tnapi,
segs = skb_gso_segment(skb, tp->dev->features &
~(NETIF_F_TSO | NETIF_F_TSO6));
- if (IS_ERR(segs) || !segs) {
+ if (IS_ERR_OR_NULL(segs)) {
tnapi->tx_dropped++;
goto tg3_tso_bug_end;
}
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c
index 3307e50426819087ad985178c4a5383f16b8e7b4..1c8a6445d4b2e3535d8f1b7908dd02d8dd2f23fa 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_flower.c
@@ -1032,8 +1032,7 @@ static void ch_flower_stats_handler(struct work_struct *work)
do {
rhashtable_walk_start(&iter);
- while ((flower_entry = rhashtable_walk_next(&iter)) &&
- !IS_ERR(flower_entry)) {
+ while (!IS_ERR_OR_NULL((flower_entry = rhashtable_walk_next(&iter)))) {
ret = cxgb4_get_filter_counters(adap->port[0],
flower_entry->filter_id,
&packets, &bytes,
diff --git a/drivers/net/ethernet/intel/ice/devlink/devlink.c b/drivers/net/ethernet/intel/ice/devlink/devlink.c
index 6c72bd15db6d75a1d4fa04ef8fefbd26fb6e84bd..3d08b9187fd76ca3198af28111b6f1c1765ea01e 100644
--- a/drivers/net/ethernet/intel/ice/devlink/devlink.c
+++ b/drivers/net/ethernet/intel/ice/devlink/devlink.c
@@ -791,7 +791,7 @@ static void ice_traverse_tx_tree(struct devlink *devlink, struct ice_sched_node
node->parent->rate_node);
}
- if (rate_node && !IS_ERR(rate_node))
+ if (!IS_ERR_OR_NULL(rate_node))
node->rate_node = rate_node;
traverse_children:
diff --git a/drivers/net/ethernet/marvell/prestera/prestera_router.c b/drivers/net/ethernet/marvell/prestera/prestera_router.c
index b036b173a308b5f994ad8538eb010fa27196988c..4492938e8a3da91d32efe8d45ccbe2eb437c0e49 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_router.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_router.c
@@ -1061,7 +1061,7 @@ static void __prestera_k_arb_hw_state_upd(struct prestera_switch *sw,
n = NULL;
}
- if (!IS_ERR(n) && n) {
+ if (!IS_ERR_OR_NULL(n)) {
neigh_event_send(n, NULL);
neigh_release(n);
} else {
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 6827c99bde8c22db42b363d2d36ad6f26075ed50..356a4e9ce04b1fcf8786d7274d31ace404be2cf6 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1275,7 +1275,7 @@ static int stmmac_init_phy(struct net_device *dev)
/* Some DT bindings do not set-up the PHY handle. Let's try to
* manually parse it
*/
- if (!phy_fwnode || IS_ERR(phy_fwnode)) {
+ if (IS_ERR_OR_NULL(phy_fwnode)) {
int addr = priv->plat->phy_addr;
struct phy_device *phydev;
diff --git a/drivers/net/mdio/mdio-xgene.c b/drivers/net/mdio/mdio-xgene.c
index a8f91a4b7fed0927ee14e408000cd3a2bfb9b09a..09b30b563295c6085dc1358ac361301e5cf6b2a8 100644
--- a/drivers/net/mdio/mdio-xgene.c
+++ b/drivers/net/mdio/mdio-xgene.c
@@ -265,7 +265,7 @@ struct phy_device *xgene_enet_phy_register(struct mii_bus *bus, int phy_addr)
struct phy_device *phy_dev;
phy_dev = get_phy_device(bus, phy_addr, false);
- if (!phy_dev || IS_ERR(phy_dev))
+ if (IS_ERR_OR_NULL(phy_dev))
return NULL;
if (phy_device_register(phy_dev))
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 0c83bbbea2e7c322ee6339893e281237663bd3ae..73f17ebd7d40007eec5004f887a46249defd28ab 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -2218,7 +2218,7 @@ static void r8152_csum_workaround(struct r8152 *tp, struct sk_buff *skb,
features &= ~(NETIF_F_SG | NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
segs = skb_gso_segment(skb, features);
- if (IS_ERR(segs) || !segs)
+ if (IS_ERR_OR_NULL(segs))
goto drop;
__skb_queue_head_init(&seg_list);
--
2.43.0
^ permalink raw reply related
* [PATCH 11/61] pstore: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Kees Cook, Tony Luck, Guilherme G. Piccoli
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Kees Cook <kees@kernel.org>
To: Tony Luck <tony.luck@intel.com>
To: "Guilherme G. Piccoli" <gpiccoli@igalia.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
fs/pstore/zone.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/pstore/zone.c b/fs/pstore/zone.c
index a3b003f9a3a079c482b673f57023ce88fc290dbf..dce8403ca18566cc4a7a853ccdc7e1c165666fcb 100644
--- a/fs/pstore/zone.c
+++ b/fs/pstore/zone.c
@@ -1226,7 +1226,7 @@ static struct pstore_zone **psz_init_zones(enum pstore_type_id type,
for (i = 0; i < c; i++) {
zone = psz_init_zone(type, off, record_size);
- if (!zone || IS_ERR(zone)) {
+ if (IS_ERR_OR_NULL(zone)) {
pr_err("initialize zones %s failed\n", name);
psz_free_zones(&zones, &i);
return (void *)zone;
--
2.43.0
^ permalink raw reply related
* [PATCH 30/61] net/sunrpc: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Trond Myklebust, Anna Schumaker, Chuck Lever, Jeff Layton,
NeilBrown, Olga Kornievskaia, Dai Ngo, Tom Talpey,
David S. Miller, Eric Dumazet, Jakub Kicinski, Paolo Abeni,
Simon Horman
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Trond Myklebust <trondmy@kernel.org>
To: Anna Schumaker <anna@kernel.org>
To: Chuck Lever <chuck.lever@oracle.com>
To: Jeff Layton <jlayton@kernel.org>
To: NeilBrown <neil@brown.name>
To: Olga Kornievskaia <okorniev@redhat.com>
To: Dai Ngo <Dai.Ngo@oracle.com>
To: Tom Talpey <tom@talpey.com>
To: "David S. Miller" <davem@davemloft.net>
To: Eric Dumazet <edumazet@google.com>
To: Jakub Kicinski <kuba@kernel.org>
To: Paolo Abeni <pabeni@redhat.com>
To: Simon Horman <horms@kernel.org>
Cc: linux-nfs@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
net/sunrpc/xprtrdma/svc_rdma_transport.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index 9b623849723ed0eb74b827881c6f32d3434c891b..b4d03e59a8202f20360cff1e2e79b1e325396517 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -578,7 +578,7 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt)
errout:
/* Take a reference in case the DTO handler runs */
svc_xprt_get(&newxprt->sc_xprt);
- if (newxprt->sc_qp && !IS_ERR(newxprt->sc_qp))
+ if (!IS_ERR_OR_NULL(newxprt->sc_qp))
ib_destroy_qp(newxprt->sc_qp);
rdma_destroy_id(newxprt->sc_cm_id);
rpcrdma_rn_unregister(dev, &newxprt->sc_rn);
@@ -608,7 +608,7 @@ static void svc_rdma_free(struct svc_xprt *xprt)
might_sleep();
/* This blocks until the Completion Queues are empty */
- if (rdma->sc_qp && !IS_ERR(rdma->sc_qp))
+ if (!IS_ERR_OR_NULL(rdma->sc_qp))
ib_drain_qp(rdma->sc_qp);
flush_workqueue(svcrdma_wq);
@@ -619,16 +619,16 @@ static void svc_rdma_free(struct svc_xprt *xprt)
svc_rdma_recv_ctxts_destroy(rdma);
/* Destroy the QP if present (not a listener) */
- if (rdma->sc_qp && !IS_ERR(rdma->sc_qp))
+ if (!IS_ERR_OR_NULL(rdma->sc_qp))
ib_destroy_qp(rdma->sc_qp);
- if (rdma->sc_sq_cq && !IS_ERR(rdma->sc_sq_cq))
+ if (!IS_ERR_OR_NULL(rdma->sc_sq_cq))
ib_free_cq(rdma->sc_sq_cq);
- if (rdma->sc_rq_cq && !IS_ERR(rdma->sc_rq_cq))
+ if (!IS_ERR_OR_NULL(rdma->sc_rq_cq))
ib_free_cq(rdma->sc_rq_cq);
- if (rdma->sc_pd && !IS_ERR(rdma->sc_pd))
+ if (!IS_ERR_OR_NULL(rdma->sc_pd))
ib_dealloc_pd(rdma->sc_pd);
/* Destroy the CM ID */
--
2.43.0
^ permalink raw reply related
* [PATCH 06/61] 9p: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Eric Van Hensbergen, Latchesar Ionkov, Dominique Martinet,
Christian Schoenebeck
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Eric Van Hensbergen <ericvh@kernel.org>
To: Latchesar Ionkov <lucho@ionkov.net>
To: Dominique Martinet <asmadeus@codewreck.org>
To: Christian Schoenebeck <linux_oss@crudebyte.com>
Cc: v9fs@lists.linux.dev
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
fs/9p/fid.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/9p/fid.h b/fs/9p/fid.h
index 0d6138bee2a3d1ab565ab2d210c0a3f3bf97e4e3..3bb7ef4380e972a2d9ab67eb4aab6cc5bfe2eea7 100644
--- a/fs/9p/fid.h
+++ b/fs/9p/fid.h
@@ -27,7 +27,7 @@ static inline struct p9_fid *v9fs_fid_clone(struct dentry *dentry)
struct p9_fid *fid, *nfid;
fid = v9fs_fid_lookup(dentry);
- if (!fid || IS_ERR(fid))
+ if (IS_ERR_OR_NULL(fid))
return fid;
nfid = clone_fid(fid);
--
2.43.0
^ permalink raw reply related
* [PATCH 18/61] sound: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Sylwester Nawrocki, Liam Girdwood, Mark Brown, Jaroslav Kysela,
Takashi Iwai, Max Filippov
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Sylwester Nawrocki <s.nawrocki@samsung.com>
To: Liam Girdwood <lgirdwood@gmail.com>
To: Mark Brown <broonie@kernel.org>
To: Jaroslav Kysela <perex@perex.cz>
To: Takashi Iwai <tiwai@suse.com>
To: Max Filippov <jcmvbkbc@gmail.com>
Cc: linux-sound@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
sound/soc/samsung/i2s.c | 4 ++--
sound/soc/xtensa/xtfpga-i2s.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index e9964f0e010aee549cced75d8fe2023e8271d443..6e86f3a0a52dd3f8fc728d634594eb81f9945c57 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -559,7 +559,7 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int rfs,
clk_id = 1;
if (!any_active(i2s)) {
- if (priv->op_clk && !IS_ERR(priv->op_clk)) {
+ if (!IS_ERR_OR_NULL(priv->op_clk)) {
if ((clk_id && !(mod & rsrc_mask)) ||
(!clk_id && (mod & rsrc_mask))) {
clk_disable_unprepare(priv->op_clk);
@@ -812,7 +812,7 @@ static int i2s_hw_params(struct snd_pcm_substream *substream,
i2s->frmclk = params_rate(params);
rclksrc = priv->clk_table[CLK_I2S_RCLK_SRC];
- if (rclksrc && !IS_ERR(rclksrc))
+ if (!IS_ERR_OR_NULL(rclksrc))
priv->rclk_srcrate = clk_get_rate(rclksrc);
return 0;
diff --git a/sound/soc/xtensa/xtfpga-i2s.c b/sound/soc/xtensa/xtfpga-i2s.c
index 678ded059b959d475b6be3766867c8a78bdd4e54..698905257b690457a5d3d315e77d99d487d91f77 100644
--- a/sound/soc/xtensa/xtfpga-i2s.c
+++ b/sound/soc/xtensa/xtfpga-i2s.c
@@ -609,7 +609,7 @@ static void xtfpga_i2s_remove(struct platform_device *pdev)
{
struct xtfpga_i2s *i2s = dev_get_drvdata(&pdev->dev);
- if (i2s->regmap && !IS_ERR(i2s->regmap)) {
+ if (!IS_ERR_OR_NULL(i2s->regmap)) {
regmap_write(i2s->regmap, XTFPGA_I2S_CONFIG, 0);
regmap_write(i2s->regmap, XTFPGA_I2S_INT_MASK, 0);
regmap_write(i2s->regmap, XTFPGA_I2S_INT_STATUS,
--
2.43.0
^ permalink raw reply related
* [PATCH 16/61] sched: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Tejun Heo, David Vernet, Andrea Righi, Changwoo Min, Ingo Molnar,
Peter Zijlstra, Juri Lelli, Vincent Guittot, Dietmar Eggemann,
Steven Rostedt, Ben Segall, Mel Gorman, Valentin Schneider
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Tejun Heo <tj@kernel.org>
To: David Vernet <void@manifault.com>
To: Andrea Righi <arighi@nvidia.com>
To: Changwoo Min <changwoo@igalia.com>
To: Ingo Molnar <mingo@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>
To: Juri Lelli <juri.lelli@redhat.com>
To: Vincent Guittot <vincent.guittot@linaro.org>
To: Dietmar Eggemann <dietmar.eggemann@arm.com>
To: Steven Rostedt <rostedt@goodmis.org>
To: Ben Segall <bsegall@google.com>
To: Mel Gorman <mgorman@suse.de>
To: Valentin Schneider <vschneid@redhat.com>
Cc: sched-ext@lists.linux.dev
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
kernel/sched/ext.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c
index 1594987d637b09e586ae788b7f2e6336332d605a..cfa869bd7de5406a5ca094992ab04c62b0e92fd0 100644
--- a/kernel/sched/ext.c
+++ b/kernel/sched/ext.c
@@ -3688,7 +3688,7 @@ static void scx_sched_free_rcu_work(struct work_struct *work)
do {
rhashtable_walk_start(&rht_iter);
- while ((dsq = rhashtable_walk_next(&rht_iter)) && !IS_ERR(dsq))
+ while (!IS_ERR_OR_NULL((dsq = rhashtable_walk_next(&rht_iter))))
destroy_dsq(sch, dsq->id);
rhashtable_walk_stop(&rht_iter);
--
2.43.0
^ permalink raw reply related
* [PATCH 09/61] ntfs3: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Konstantin Komarov
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Cc: ntfs3@lists.linux.dev
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
fs/ntfs3/fsntfs.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/fs/ntfs3/fsntfs.c b/fs/ntfs3/fsntfs.c
index 0df2aa81d8845f21bfb571c408bd65b9e1fb8128..3ced4f95c2e95bac1fe5b334f976b8c8a15cf19d 100644
--- a/fs/ntfs3/fsntfs.c
+++ b/fs/ntfs3/fsntfs.c
@@ -237,7 +237,7 @@ int ntfs_extend_init(struct ntfs_sb_info *sbi)
/* Try to find $ObjId */
inode2 = dir_search_u(inode, &NAME_OBJID, NULL);
- if (inode2 && !IS_ERR(inode2)) {
+ if (!IS_ERR_OR_NULL(inode2)) {
if (is_bad_inode(inode2)) {
iput(inode2);
} else {
@@ -248,21 +248,21 @@ int ntfs_extend_init(struct ntfs_sb_info *sbi)
/* Try to find $Quota */
inode2 = dir_search_u(inode, &NAME_QUOTA, NULL);
- if (inode2 && !IS_ERR(inode2)) {
+ if (!IS_ERR_OR_NULL(inode2)) {
sbi->quota_no = inode2->i_ino;
iput(inode2);
}
/* Try to find $Reparse */
inode2 = dir_search_u(inode, &NAME_REPARSE, NULL);
- if (inode2 && !IS_ERR(inode2)) {
+ if (!IS_ERR_OR_NULL(inode2)) {
sbi->reparse.ni = ntfs_i(inode2);
sbi->reparse_no = inode2->i_ino;
}
/* Try to find $UsnJrnl */
inode2 = dir_search_u(inode, &NAME_USNJRNL, NULL);
- if (inode2 && !IS_ERR(inode2)) {
+ if (!IS_ERR_OR_NULL(inode2)) {
sbi->usn_jrnl_no = inode2->i_ino;
iput(inode2);
}
--
2.43.0
^ permalink raw reply related
* [PATCH 04/61] ext4: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Theodore Ts'o, Andreas Dilger
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: "Theodore Ts'o" <tytso@mit.edu>
To: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: linux-ext4@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
fs/ext4/fast_commit.c | 2 +-
fs/ext4/mballoc.c | 2 +-
fs/ext4/namei.c | 2 +-
fs/ext4/symlink.c | 2 +-
4 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/fs/ext4/fast_commit.c b/fs/ext4/fast_commit.c
index f575751f1cae430eead31afa4f7d03ade1099d4a..bc69ac1195acb823465e735572b8a21255d485f5 100644
--- a/fs/ext4/fast_commit.c
+++ b/fs/ext4/fast_commit.c
@@ -320,7 +320,7 @@ void ext4_fc_mark_ineligible(struct super_block *sb, int reason, handle_t *handl
if (ext4_fc_disabled(sb))
return;
- if (handle && !IS_ERR(handle))
+ if (!IS_ERR_OR_NULL(handle))
tid = handle->h_transaction->t_tid;
else {
read_lock(&sbi->s_journal->j_state_lock);
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 20e9fdaf4301b61c9d54401ed95067db6b6b8173..d7f004817c1ff758e4e25f84b2c27238b7420f84 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2870,7 +2870,7 @@ ext4_group_t ext4_mb_prefetch(struct super_block *sb, ext4_group_t group,
EXT4_MB_GRP_NEED_INIT(grp) &&
ext4_free_group_clusters(sb, gdp) > 0 ) {
bh = ext4_read_block_bitmap_nowait(sb, group, true);
- if (bh && !IS_ERR(bh)) {
+ if (!IS_ERR_OR_NULL(bh)) {
if (!buffer_uptodate(bh) && cnt)
(*cnt)++;
brelse(bh);
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index c4b5e252af0efbfcbaf83688a32d445327a74a02..4fdfc81f79028a588b3c1f912bff5e8a52cd9f13 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -723,7 +723,7 @@ struct stats dx_show_entries(struct dx_hash_info *hinfo, struct inode *dir,
struct stats stats;
printk("%s%3u:%03u hash %8x/%8x ",levels?"":" ", i, block, hash, range);
bh = ext4_bread(NULL,dir, block, 0);
- if (!bh || IS_ERR(bh))
+ if (IS_ERR_OR_NULL(bh))
continue;
stats = levels?
dx_show_entries(hinfo, dir, ((struct dx_node *) bh->b_data)->entries, levels - 1):
diff --git a/fs/ext4/symlink.c b/fs/ext4/symlink.c
index 645240cc0229fe4a2eda4499ae4a834fe3bd3a66..b612262719ede35d2612c5834d2bef7f18215516 100644
--- a/fs/ext4/symlink.c
+++ b/fs/ext4/symlink.c
@@ -92,7 +92,7 @@ static const char *ext4_get_link(struct dentry *dentry, struct inode *inode,
if (!dentry) {
bh = ext4_getblk(NULL, inode, 0, EXT4_GET_BLOCKS_CACHED_NOWAIT);
- if (IS_ERR(bh) || !bh)
+ if (IS_ERR_OR_NULL(bh))
return ERR_PTR(-ECHILD);
if (!ext4_buffer_uptodate(bh)) {
brelse(bh);
--
2.43.0
^ permalink raw reply related
* [PATCH 10/61] gfs2: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Andreas Gruenbacher
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Andreas Gruenbacher <agruenba@redhat.com>
Cc: gfs2@lists.linux.dev
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
fs/gfs2/glock.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 2acbabccc8adf957e02845041193502a96370a6d..8ed6b4535a728e217e5cec7b64488583b5737c58 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -2013,7 +2013,7 @@ static void glock_hash_walk(glock_examiner examiner, const struct gfs2_sbd *sdp)
do {
rhashtable_walk_start(&iter);
- while ((gl = rhashtable_walk_next(&iter)) && !IS_ERR(gl)) {
+ while (!IS_ERR_OR_NULL((gl = rhashtable_walk_next(&iter)))) {
if (glock_sbd(gl) == sdp)
examiner(gl);
}
--
2.43.0
^ permalink raw reply related
* [PATCH 07/61] erofs: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Gao Xiang, Chao Yu, Yue Hu, Jeffle Xu, Sandeep Dhavale, Hongbo Li,
Chunhai Guo
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
Change generated with coccinelle.
To: Gao Xiang <xiang@kernel.org>
To: Chao Yu <chao@kernel.org>
To: Yue Hu <zbestahu@gmail.com>
To: Jeffle Xu <jefflexu@linux.alibaba.com>
To: Sandeep Dhavale <dhavale@google.com>
To: Hongbo Li <lihongbo22@huawei.com>
To: Chunhai Guo <guochunhai@vivo.com>
Cc: linux-erofs@lists.ozlabs.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
fs/erofs/zdata.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c
index 3977e42b9516861bf3d59c072b6b8aaa6898dd8a..88c293ab2b1ef7962c6f5c0aa82639859e41b8e2 100644
--- a/fs/erofs/zdata.c
+++ b/fs/erofs/zdata.c
@@ -1227,7 +1227,7 @@ static int z_erofs_parse_in_bvecs(struct z_erofs_backend *be, bool *overlapped)
struct page *page = bvec->page;
/* compressed data ought to be valid when decompressing */
- if (IS_ERR(page) || !page) {
+ if (IS_ERR_OR_NULL(page)) {
bvec->page = NULL; /* clear the failure reason */
err = page ? PTR_ERR(page) : -EIO;
continue;
--
2.43.0
^ permalink raw reply related
* [PATCH 01/61] Coccinelle: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Julia Lawall, Nicolas Palix
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Find and convert uses of IS_ERR() plus NULL check to IS_ERR_OR_NULL().
There are several cases where `!ptr && WARN_ON[_ONCE](IS_ERR(ptr))` is
used:
- arch/x86/kernel/callthunks.c:215 WARN_ON_ONCE
- drivers/clk/clk.c:4561 WARN_ON_ONCE
- drivers/interconnect/core.c:793 WARN_ON
- drivers/reset/core.c:718 WARN_ON
The change is not 100% semantical equivalent as the warning will now
also happen when the pointer is NULL.
To: Julia Lawall <Julia.Lawall@inria.fr>
To: Nicolas Palix <nicolas.palix@imag.fr>
Cc: cocci@inria.fr
Cc: linux-kernel@vger.kernel.org
---
drivers/clocksource/mips-gic-timer.c:283 looks suspicious: ret != clk,
but Daniel Lezcano verified it as cottect.
There are some cases where the checks are part of a larger expression:
- mm/kmemleak.c:1095
- mm/kmemleak.c:1155
- mm/kmemleak.c:1173
- mm/kmemleak.c:1290
- mm/kmemleak.c:1328
- mm/kmemleak.c:1241
- mm/kmemleak.c:1310
- mm/kmemleak.c:1258
- net/netlink/af_netlink.c:2670
Thanks to Julia Lawall for the help to also handle them.
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
scripts/coccinelle/api/is_err_or_null.cocci | 125 ++++++++++++++++++++++++++++
1 file changed, 125 insertions(+)
diff --git a/scripts/coccinelle/api/is_err_or_null.cocci b/scripts/coccinelle/api/is_err_or_null.cocci
new file mode 100644
index 0000000000000000000000000000000000000000..7a430eadccd9f9f28b1711d67dd87a817a45bd52
--- /dev/null
+++ b/scripts/coccinelle/api/is_err_or_null.cocci
@@ -0,0 +1,125 @@
+// SPDX-License-Identifier: GPL-2.0-only
+///
+/// Use IF_ERR_OR_NULL() instead of IS_ERR() plus a check for (not) NULL
+///
+// Copyright: (C) 2026 Philipp Hahn, FRITZ! Technology GmbH.
+// Confidence: High
+// Options: --no-includes --include-headers
+// Keywords: IS_ERR, IS_ERR_OR_NULL
+
+virtual patch
+virtual report
+virtual org
+
+@p1 depends on patch@
+expression E;
+@@
+(
+- E != NULL && !IS_ERR(E)
++ !IS_ERR_OR_NULL(E)
+|
+- E == NULL || IS_ERR(E)
++ IS_ERR_OR_NULL(E)
+|
+- !IS_ERR(E) && E != NULL
++ !IS_ERR_OR_NULL(E)
+|
+- IS_ERR(E) || E == NULL
++ IS_ERR_OR_NULL(E)
+)
+
+@p2 depends on patch@
+expression E;
+@@
+(
+- E == NULL || WARN_ON(IS_ERR(E))
++ WARN_ON(IS_ERR_OR_NULL(E))
+|
+- E == NULL || WARN_ON_ONCE(IS_ERR(E))
++ WARN_ON_ONCE(IS_ERR_OR_NULL(E))
+)
+
+@p3 depends on patch@
+expression E,e1;
+@@
+(
+- e1 && E != NULL && !IS_ERR(E)
++ e1 && !IS_ERR_OR_NULL(E)
+|
+- e1 || E == NULL || IS_ERR(E)
++ e1 || IS_ERR_OR_NULL(E)
+|
+- e1 && !IS_ERR(E) && E != NULL
++ e1 && !IS_ERR_OR_NULL(E)
+|
+- e1 || IS_ERR(E) || E == NULL
++ e1 || IS_ERR_OR_NULL(E)
+)
+
+@r1 depends on report || org@
+expression E;
+position p;
+@@
+(
+ E != NULL && ... && !IS_ERR@p(E)
+|
+ E == NULL || ... || IS_ERR@p(E)
+|
+ !IS_ERR@p(E) && ... && E != NULL
+|
+ IS_ERR@p(E) || ... || E == NULL
+)
+
+@script:python depends on report@
+p << r1.p;
+@@
+coccilib.report.print_report(p[0], "opportunity for IS_ERR_OR_NULL()")
+
+@script:python depends on org@
+p << r1.p;
+@@
+coccilib.org.print_todo(p[0], "opportunity for IS_ERR_OR_NULL()")
+
+@p4 depends on patch@
+identifier I;
+expression E;
+@@
+(
+- (I = E) != NULL && !IS_ERR(I)
++ !IS_ERR_OR_NULL((I = E))
+|
+- (I = E) == NULL || IS_ERR(I)
++ IS_ERR_OR_NULL((I = E))
+)
+
+@r2 depends on report || org@
+identifier I;
+expression E;
+position p;
+@@
+(
+* (I = E) != NULL && ... && !IS_ERR@p(I)
+|
+* (I = E) == NULL || ... || IS_ERR@p(I)
+)
+
+@script:python depends on report@
+p << r2.p;
+@@
+coccilib.report.print_report(p[0], "opportunity for IS_ERR_OR_NULL()")
+
+@script:python depends on org@
+p << r2.p;
+@@
+coccilib.org.print_todo(p[0], "opportunity for IS_ERR_OR_NULL()")
+
+@p5 depends on patch disable unlikely @
+expression E;
+@@
+-\( likely \| unlikely \)(
+(
+ IS_ERR_OR_NULL(E)
+|
+ !IS_ERR_OR_NULL(E)
+)
+-)
--
2.43.0
^ permalink raw reply related
* [PATCH 02/61] btrfs: Prefer IS_ERR_OR_NULL over manual NULL check
From: Philipp Hahn @ 2026-03-10 11:48 UTC (permalink / raw)
To: amd-gfx, apparmor, bpf, ceph-devel, cocci, dm-devel, dri-devel,
gfs2, intel-gfx, intel-wired-lan, iommu, kvm, linux-arm-kernel,
linux-block, linux-bluetooth, linux-btrfs, linux-cifs, linux-clk,
linux-erofs, linux-ext4, linux-fsdevel, linux-gpio, linux-hyperv,
linux-input, linux-kernel, linux-leds, linux-media, linux-mips,
linux-mm, linux-modules, linux-mtd, linux-nfs, linux-omap,
linux-phy, linux-pm, linux-rockchip, linux-s390, linux-scsi,
linux-sctp, linux-security-module, linux-sh, linux-sound,
linux-stm32, linux-trace-kernel, linux-usb, linux-wireless,
netdev, ntfs3, samba-technical, sched-ext, target-devel,
tipc-discussion, v9fs, Philipp Hahn
Cc: Chris Mason, David Sterba
In-Reply-To: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de>
Prefer using IS_ERR_OR_NULL() over using IS_ERR() and a manual NULL
check.
IS_ERR_OR_NULL() already uses likely(!ptr) internally. checkpatch does
not like nesting it:
> WARNING: nested (un)?likely() calls, IS_ERR_OR_NULL already uses
> unlikely() internally
Remove the explicit use of likely().
Change generated with coccinelle.
To: Chris Mason <clm@fb.com>
To: David Sterba <dsterba@suse.com>
Cc: linux-btrfs@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
---
fs/btrfs/inode.c | 2 +-
fs/btrfs/transaction.c | 2 +-
fs/btrfs/tree-log.c | 2 +-
fs/btrfs/uuid-tree.c | 2 +-
4 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index a11fcc9e9f502c559148cf33679014fb83b0d3b0..7c26a0bf56bf7309e2ce8256854d760b2d64b16a 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4683,7 +4683,7 @@ static noinline int may_destroy_subvol(struct btrfs_root *root)
dir_id = btrfs_super_root_dir(fs_info->super_copy);
di = btrfs_lookup_dir_item(NULL, fs_info->tree_root, path,
dir_id, &name, 0);
- if (di && !IS_ERR(di)) {
+ if (!IS_ERR_OR_NULL(di)) {
btrfs_dir_item_key_to_cpu(path->nodes[0], di, &key);
if (key.objectid == btrfs_root_id(root)) {
ret = -EPERM;
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 7ef8c9b7dfc17a5133b6d2dc134e288975ed98d1..40b83037725033d3178dc3fc2c1e347ad2c597f7 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -1737,7 +1737,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
dir_item = btrfs_lookup_dir_item(NULL, parent_root, path,
btrfs_ino(parent_inode),
&fname.disk_name, 0);
- if (unlikely(dir_item != NULL && !IS_ERR(dir_item))) {
+ if (!IS_ERR_OR_NULL(dir_item)) {
pending->error = -EEXIST;
goto dir_item_existed;
} else if (IS_ERR(dir_item)) {
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 780a06d592409b05fb42dc8079b019d23fe0cdfa..2e07ae393cf9d16f562047dd4cbfd7b4b9f2952e 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -5750,7 +5750,7 @@ static int btrfs_check_ref_name_override(struct extent_buffer *eb,
name_str.len = this_name_len;
di = btrfs_lookup_dir_item(NULL, inode->root, search_path,
parent, &name_str, 0);
- if (di && !IS_ERR(di)) {
+ if (!IS_ERR_OR_NULL(di)) {
struct btrfs_key di_key;
btrfs_dir_item_key_to_cpu(search_path->nodes[0],
diff --git a/fs/btrfs/uuid-tree.c b/fs/btrfs/uuid-tree.c
index f24c14b9bb2fd7420b06263a5a0c4b889a859bc6..c497b287f3418933e532903b326b969416ae22cb 100644
--- a/fs/btrfs/uuid-tree.c
+++ b/fs/btrfs/uuid-tree.c
@@ -478,7 +478,7 @@ int btrfs_uuid_scan_kthread(void *data)
out:
btrfs_free_path(path);
- if (trans && !IS_ERR(trans))
+ if (!IS_ERR_OR_NULL(trans))
btrfs_end_transaction(trans);
if (ret)
btrfs_warn(fs_info, "btrfs_uuid_scan_kthread failed %d", ret);
--
2.43.0
^ permalink raw reply related
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