November 2025 - Linux-stable-mirror

Kontoumstrukturierung für Kredite und Investitionen

by Gerald Johnson

1 month, 1 week

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[to-be-updated] kernel-kexec-change-the-prototype-of-kimage_map_segment.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: kernel/kexec: change the prototype of kimage_map_segment() has been removed from the -mm tree. Its filename was kernel-kexec-change-the-prototype-of-kimage_map_segment.patch This patch was dropped because an updated version will be issued ------------------------------------------------------ From: Pingfan Liu <piliu(a)redhat.com> Subject: kernel/kexec: change the prototype of kimage_map_segment() Date: Wed, 5 Nov 2025 21:09:21 +0800 The kexec segment index will be required to extract the corresponding information for that segment in kimage_map_segment(). Additionally, kexec_segment already holds the kexec relocation destination address and size. Therefore, the prototype of kimage_map_segment() can be changed. Link: https://lkml.kernel.org/r/20251105130922.13321-1-piliu@redhat.com Fixes: 0091d9241ea2 ("kexec: define functions to map and unmap segments") Signed-off-by: Pingfan Liu <piliu(a)redhat.com> Cc: Baoquan He <bhe(a)redhat.com> Cc: Mimi Zohar <zohar(a)linux.ibm.com> Cc: Roberto Sassu <roberto.sassu(a)huawei.com> Cc: Alexander Graf <graf(a)amazon.com> Cc: Steven Chen <chenste(a)linux.microsoft.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- include/linux/kexec.h | 4 ++-- kernel/kexec_core.c | 9 ++++++--- security/integrity/ima/ima_kexec.c | 4 +--- 3 files changed, 9 insertions(+), 8 deletions(-) --- a/include/linux/kexec.h~kernel-kexec-change-the-prototype-of-kimage_map_segment +++ a/include/linux/kexec.h @@ -530,7 +530,7 @@ extern bool kexec_file_dbg_print; #define kexec_dprintk(fmt, arg...) \ do { if (kexec_file_dbg_print) pr_info(fmt, ##arg); } while (0) -extern void *kimage_map_segment(struct kimage *image, unsigned long addr, unsigned long size); +extern void *kimage_map_segment(struct kimage *image, int idx); extern void kimage_unmap_segment(void *buffer); #else /* !CONFIG_KEXEC_CORE */ struct pt_regs; @@ -540,7 +540,7 @@ static inline void __crash_kexec(struct static inline void crash_kexec(struct pt_regs *regs) { } static inline int kexec_should_crash(struct task_struct *p) { return 0; } static inline int kexec_crash_loaded(void) { return 0; } -static inline void *kimage_map_segment(struct kimage *image, unsigned long addr, unsigned long size) +static inline void *kimage_map_segment(struct kimage *image, int idx) { return NULL; } static inline void kimage_unmap_segment(void *buffer) { } #define kexec_in_progress false --- a/kernel/kexec_core.c~kernel-kexec-change-the-prototype-of-kimage_map_segment +++ a/kernel/kexec_core.c @@ -960,17 +960,20 @@ int kimage_load_segment(struct kimage *i return result; } -void *kimage_map_segment(struct kimage *image, - unsigned long addr, unsigned long size) +void *kimage_map_segment(struct kimage *image, int idx) { + unsigned long addr, size, eaddr; unsigned long src_page_addr, dest_page_addr = 0; - unsigned long eaddr = addr + size; kimage_entry_t *ptr, entry; struct page **src_pages; unsigned int npages; void *vaddr = NULL; int i; + addr = image->segment[idx].mem; + size = image->segment[idx].memsz; + eaddr = addr + size; + /* * Collect the source pages and map them in a contiguous VA range. */ --- a/security/integrity/ima/ima_kexec.c~kernel-kexec-change-the-prototype-of-kimage_map_segment +++ a/security/integrity/ima/ima_kexec.c @@ -250,9 +250,7 @@ void ima_kexec_post_load(struct kimage * if (!image->ima_buffer_addr) return; - ima_kexec_buffer = kimage_map_segment(image, - image->ima_buffer_addr, - image->ima_buffer_size); + ima_kexec_buffer = kimage_map_segment(image, image->ima_segment_index); if (!ima_kexec_buffer) { pr_err("Could not map measurements buffer.\n"); return; _ Patches currently in -mm which might be from piliu(a)redhat.com are kernel-kexec-fix-ima-when-allocation-happens-in-cma-area.patch

1 month, 1 week

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+ selftests-user_events-fix-type-cast-for-write_index-packed-member-in-perf_test.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: selftests/user_events: fix type cast for write_index packed member in perf_test has been added to the -mm mm-hotfixes-unstable branch. Its filename is selftests-user_events-fix-type-cast-for-write_index-packed-member-in-perf_test.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Ankit Khushwaha <ankitkhushwaha.linux(a)gmail.com> Subject: selftests/user_events: fix type cast for write_index packed member in perf_test Date: Thu, 6 Nov 2025 15:25:32 +0530 Accessing 'reg.write_index' directly triggers a -Waddress-of-packed-member warning due to potential unaligned pointer access: perf_test.c:239:38: warning: taking address of packed member 'write_index' of class or structure 'user_reg' may result in an unaligned pointer value [-Waddress-of-packed-member] 239 | ASSERT_NE(-1, write(self->data_fd, &reg.write_index, | ^~~~~~~~~~~~~~~ Since write(2) works with any alignment. Casting '&reg.write_index' explicitly to 'void *' to suppress this warning. Link: https://lkml.kernel.org/r/20251106095532.15185-1-ankitkhushwaha.linux@gmail… Fixes: 42187bdc3ca4 ("selftests/user_events: Add perf self-test for empty arguments events") Signed-off-by: Ankit Khushwaha <ankitkhushwaha.linux(a)gmail.com> Cc: Beau Belgrave <beaub(a)linux.microsoft.com> Cc: "Masami Hiramatsu (Google)" <mhiramat(a)kernel.org> Cc: Steven Rostedt <rostedt(a)goodmis.org> Cc: sunliming <sunliming(a)kylinos.cn> Cc: Wei Yang <richard.weiyang(a)gmail.com> Cc: Shuah Khan <shuah(a)kernel.org> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- tools/testing/selftests/user_events/perf_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/tools/testing/selftests/user_events/perf_test.c~selftests-user_events-fix-type-cast-for-write_index-packed-member-in-perf_test +++ a/tools/testing/selftests/user_events/perf_test.c @@ -236,7 +236,7 @@ TEST_F(user, perf_empty_events) { ASSERT_EQ(1 << reg.enable_bit, self->check); /* Ensure write shows up at correct offset */ - ASSERT_NE(-1, write(self->data_fd, &reg.write_index, + ASSERT_NE(-1, write(self->data_fd, (void *)&reg.write_index, sizeof(reg.write_index))); val = (void *)(((char *)perf_page) + perf_page->data_offset); ASSERT_EQ(PERF_RECORD_SAMPLE, *val); _ Patches currently in -mm which might be from ankitkhushwaha.linux(a)gmail.com are selftests-user_events-fix-type-cast-for-write_index-packed-member-in-perf_test.patch

1 month, 1 week

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[PATCH] ASoC: sdw_utils: fix device reference leak in is_sdca_endpoint_present()

by Miaoqian Lin

The bus_find_device_by_name() function returns a device pointer with an incremented reference count, but the original code was missing put_device() calls in some return paths, leading to reference count leaks. Fix this by ensuring put_device() is called before function exit after bus_find_device_by_name() succeeds This follows the same pattern used elsewhere in the kernel where bus_find_device_by_name() is properly paired with put_device(). Found via static analysis and code review. Fixes: 4f8ef33dd44a ("ASoC: soc_sdw_utils: skip the endpoint that doesn't present") Cc: stable(a)vger.kernel.org Signed-off-by: Miaoqian Lin <linmq006(a)gmail.com> --- sound/soc/sdw_utils/soc_sdw_utils.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/sound/soc/sdw_utils/soc_sdw_utils.c b/sound/soc/sdw_utils/soc_sdw_utils.c index 270c66b90228..ea594f84f11a 100644 --- a/sound/soc/sdw_utils/soc_sdw_utils.c +++ b/sound/soc/sdw_utils/soc_sdw_utils.c @@ -1278,7 +1278,7 @@ static int is_sdca_endpoint_present(struct device *dev, struct sdw_slave *slave; struct device *sdw_dev; const char *sdw_codec_name; - int i; + int ret, i; dlc = kzalloc(sizeof(*dlc), GFP_KERNEL); if (!dlc) @@ -1308,13 +1308,16 @@ static int is_sdca_endpoint_present(struct device *dev, } slave = dev_to_sdw_dev(sdw_dev); - if (!slave) - return -EINVAL; + if (!slave) { + ret = -EINVAL; + goto put_device; + } /* Make sure BIOS provides SDCA properties */ if (!slave->sdca_data.interface_revision) { dev_warn(&slave->dev, "SDCA properties not found in the BIOS\n"); - return 1; + ret = 1; + goto put_device; } for (i = 0; i < slave->sdca_data.num_functions; i++) { @@ -1323,7 +1326,8 @@ static int is_sdca_endpoint_present(struct device *dev, if (dai_type == dai_info->dai_type) { dev_dbg(&slave->dev, "DAI type %d sdca function %s found\n", dai_type, slave->sdca_data.function[i].name); - return 1; + ret = 1; + goto put_device; } } @@ -1331,7 +1335,11 @@ static int is_sdca_endpoint_present(struct device *dev, "SDCA device function for DAI type %d not supported, skip endpoint\n", dai_info->dai_type); - return 0; + ret = 0; + +put_device: + put_device(sdw_dev); + return ret; } int asoc_sdw_parse_sdw_endpoints(struct snd_soc_card *card, -- 2.39.5 (Apple Git-154)

1 month, 1 week

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+ lib-test_kho-check-if-kho-is-enabled.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: lib/test_kho: check if KHO is enabled has been added to the -mm mm-hotfixes-unstable branch. Its filename is lib-test_kho-check-if-kho-is-enabled.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Pasha Tatashin <pasha.tatashin(a)soleen.com> Subject: lib/test_kho: check if KHO is enabled Date: Thu, 6 Nov 2025 17:06:35 -0500 We must check whether KHO is enabled prior to issuing KHO commands, otherwise KHO internal data structures are not initialized. Link: https://lkml.kernel.org/r/20251106220635.2608494-1-pasha.tatashin@soleen.com Fixes: b753522bed0b ("kho: add test for kexec handover") Signed-off-by: Pasha Tatashin <pasha.tatashin(a)soleen.com> Reported-by: kernel test robot <oliver.sang(a)intel.com> Closes: https://lore.kernel.org/oe-lkp/202511061629.e242724-lkp@intel.com Cc: Alexander Graf <graf(a)amazon.com> Cc: Mike Rapoport <rppt(a)kernel.org> Cc: Pratyush Yadav <pratyush(a)kernel.org> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- lib/test_kho.c | 3 +++ 1 file changed, 3 insertions(+) --- a/lib/test_kho.c~lib-test_kho-check-if-kho-is-enabled +++ a/lib/test_kho.c @@ -301,6 +301,9 @@ static int __init kho_test_init(void) phys_addr_t fdt_phys; int err; + if (!kho_is_enabled()) + return 0; + err = kho_retrieve_subtree(KHO_TEST_FDT, &fdt_phys); if (!err) return kho_test_restore(fdt_phys); _ Patches currently in -mm which might be from pasha.tatashin(a)soleen.com are liveupdate-kho-warn-and-fail-on-metadata-or-preserved-memory-in-scratch-area.patch liveupdate-kho-warn-and-fail-on-metadata-or-preserved-memory-in-scratch-area-fix-2.patch liveupdate-kho-increase-metadata-bitmap-size-to-page_size.patch liveupdate-kho-allocate-metadata-directly-from-the-buddy-allocator.patch lib-test_kho-check-if-kho-is-enabled.patch kho-make-debugfs-interface-optional.patch kho-add-interfaces-to-unpreserve-folios-page-ranges-and-vmalloc.patch memblock-unpreserve-memory-in-case-of-error.patch test_kho-unpreserve-memory-in-case-of-error.patch kho-dont-unpreserve-memory-during-abort.patch liveupdate-kho-move-to-kernel-liveupdate.patch maintainers-update-kho-maintainers.patch

1 month, 1 week

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Account Reprofiling for Investitionsprojekt

by Gerald Johnson

1 month, 1 week

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[PATCH] strparser: Fix signed/unsigned mismatch bug

by Nate Karstens

The `len` member of the sk_buff is an unsigned int. This is cast to `ssize_t` (a signed type) for the first sk_buff in the comparison, but not the second sk_buff. This change ensures both len values are cast to `ssize_t`. This appears to cause an issue with ktls when multiple TLS PDUs are included in a single TCP segment. Signed-off-by: Nate Karstens <nate.karstens(a)garmin.com> Cc: stable(a)vger.kernel.org --- net/strparser/strparser.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/strparser/strparser.c b/net/strparser/strparser.c index 43b1f558b33d..e659fea2da70 100644 --- a/net/strparser/strparser.c +++ b/net/strparser/strparser.c @@ -238,7 +238,7 @@ static int __strp_recv(read_descriptor_t *desc, struct sk_buff *orig_skb, strp_parser_err(strp, -EMSGSIZE, desc); break; } else if (len <= (ssize_t)head->len - - skb->len - stm->strp.offset) { + (ssize_t)skb->len - stm->strp.offset) { /* Length must be into new skb (and also * greater than zero) */ -- 2.34.1

1 month, 1 week

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[PATCH] agp/alpha: fix out-of-bounds write with negative pg_start

by Yuhao Jiang

The code contains an out-of-bounds write vulnerability due to insufficient bounds validation. Negative pg_start values and integer overflow in pg_start+pg_count can bypass the existing bounds check. For example, pg_start=-1 with page_count=1 produces a sum of 0, passing the check `(pg_start + page_count) > num_entries`, but later writes to ptes[-1]. Similarly, pg_start=LONG_MAX-5 with pg_count=10 overflows, bypassing the check. Fix by explicitly rejecting negative pg_start and detecting overflow in alpha_core_agp_insert_memory, alpha_core_agp_remove_memory, iommu_release, iommu_bind, and iommu_unbind. Reported-by: Yuhao Jiang <danisjiang(a)gmail.com> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable(a)vger.kernel.org Signed-off-by: Yuhao Jiang <danisjiang(a)gmail.com> --- arch/alpha/kernel/pci_iommu.c | 17 ++++++++++++++++- drivers/char/agp/alpha-agp.c | 13 ++++++++++++- 2 files changed, 28 insertions(+), 2 deletions(-) diff --git a/arch/alpha/kernel/pci_iommu.c b/arch/alpha/kernel/pci_iommu.c index dc91de50f906..b6293dc66d45 100644 --- a/arch/alpha/kernel/pci_iommu.c +++ b/arch/alpha/kernel/pci_iommu.c @@ -859,6 +859,11 @@ iommu_release(struct pci_iommu_arena *arena, long pg_start, long pg_count) if (!arena) return -EINVAL; + if (pg_start < 0 || pg_start + pg_count > (arena->size >> PAGE_SHIFT)) + return -EINVAL; + if (pg_start + pg_count < pg_start) + return -EINVAL; + ptes = arena->ptes; /* Make sure they're all reserved first... */ @@ -879,7 +884,12 @@ iommu_bind(struct pci_iommu_arena *arena, long pg_start, long pg_count, long i, j; if (!arena) return -EINVAL; - + + if (pg_start < 0 || pg_start + pg_count > (arena->size >> PAGE_SHIFT)) + return -EINVAL; + if (pg_start + pg_count < pg_start) + return -EINVAL; + spin_lock_irqsave(&arena->lock, flags); ptes = arena->ptes; @@ -907,6 +917,11 @@ iommu_unbind(struct pci_iommu_arena *arena, long pg_start, long pg_count) if (!arena) return -EINVAL; + if (pg_start < 0 || pg_start + pg_count > (arena->size >> PAGE_SHIFT)) + return -EINVAL; + if (pg_start + pg_count < pg_start) + return -EINVAL; + p = arena->ptes + pg_start; for(i = 0; i < pg_count; i++) p[i] = IOMMU_RESERVED_PTE; diff --git a/drivers/char/agp/alpha-agp.c b/drivers/char/agp/alpha-agp.c index e1763ecb8111..e2ab959662f3 100644 --- a/drivers/char/agp/alpha-agp.c +++ b/drivers/char/agp/alpha-agp.c @@ -93,7 +93,9 @@ static int alpha_core_agp_insert_memory(struct agp_memory *mem, off_t pg_start, temp = agp_bridge->current_size; num_entries = A_SIZE_FIX(temp)->num_entries; - if ((pg_start + mem->page_count) > num_entries) + if (pg_start < 0 || (pg_start + mem->page_count) > num_entries) + return -EINVAL; + if ((pg_start + mem->page_count) < pg_start) return -EINVAL; status = agp->ops->bind(agp, pg_start, mem); @@ -107,8 +109,17 @@ static int alpha_core_agp_remove_memory(struct agp_memory *mem, off_t pg_start, int type) { alpha_agp_info *agp = agp_bridge->dev_private_data; + int num_entries; + void *temp; int status; + temp = agp_bridge->current_size; + num_entries = A_SIZE_FIX(temp)->num_entries; + if (pg_start < 0 || (pg_start + mem->page_count) > num_entries) + return -EINVAL; + if ((pg_start + mem->page_count) < pg_start) + return -EINVAL; + status = agp->ops->unbind(agp, pg_start, mem); alpha_core_agp_tlbflush(mem); return status; -- 2.34.1

1 month, 1 week

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[PATCH] kbuild: Strip trailing padding bytes from modules.builtin.modinfo

by Nathan Chancellor

After commit d50f21091358 ("kbuild: align modinfo section for Secureboot Authenticode EDK2 compat"), running modules_install with certain versions of kmod (such as 29.1 in Ubuntu Jammy) in certain configurations may fail with: depmod: ERROR: kmod_builtin_iter_next: unexpected string without modname prefix The additional padding bytes to ensure .modinfo is aligned within vmlinux.unstripped are unexpected by kmod, as this section has always just been null-terminated strings. Strip the trailing padding bytes from modules.builtin.modinfo after it has been extracted from vmlinux.unstripped to restore the format that kmod expects while keeping .modinfo aligned within vmlinux.unstripped to avoid regressing the Authenticode calculation fix for EDK2. Cc: stable(a)vger.kernel.org Fixes: d50f21091358 ("kbuild: align modinfo section for Secureboot Authenticode EDK2 compat") Reported-by: Omar Sandoval <osandov(a)fb.com> Reported-by: Samir M <samir(a)linux.ibm.com> Reported-by: Venkat Rao Bagalkote <venkat88(a)linux.ibm.com> Closes: https://lore.kernel.org/7fef7507-ad64-4e51-9bb8-c9fb6532e51e@linux.ibm.com/ Tested-by: Venkat Rao Bagalkote <venkat88(a)linux.ibm.com> Tested-by: Omar Sandoval <osandov(a)fb.com> Signed-off-by: Nathan Chancellor <nathan(a)kernel.org> --- scripts/Makefile.vmlinux | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/scripts/Makefile.vmlinux b/scripts/Makefile.vmlinux index ced4379550d7..cd788cac9d91 100644 --- a/scripts/Makefile.vmlinux +++ b/scripts/Makefile.vmlinux @@ -102,11 +102,24 @@ vmlinux: vmlinux.unstripped FORCE # modules.builtin.modinfo # --------------------------------------------------------------------------- +# .modinfo in vmlinux.unstripped is aligned to 8 bytes for compatibility with +# tools that expect vmlinux to have sufficiently aligned sections but the +# additional bytes used for padding .modinfo to satisfy this requirement break +# certain versions of kmod with +# +# depmod: ERROR: kmod_builtin_iter_next: unexpected string without modname prefix +# +# Strip the trailing padding bytes after extracting .modinfo to comply with +# what kmod expects to parse. +quiet_cmd_modules_builtin_modinfo = GEN $@ + cmd_modules_builtin_modinfo = $(cmd_objcopy); \ + sed -i 's/\x00\+$$/\x00/g' $@ + OBJCOPYFLAGS_modules.builtin.modinfo := -j .modinfo -O binary targets += modules.builtin.modinfo modules.builtin.modinfo: vmlinux.unstripped FORCE - $(call if_changed,objcopy) + $(call if_changed,modules_builtin_modinfo) # modules.builtin # --------------------------------------------------------------------------- --- base-commit: 6146a0f1dfae5d37442a9ddcba012add260bceb0 change-id: 20251105-kbuild-fix-builtin-modinfo-for-kmod-5cc1984719d3 Best regards, -- Nathan Chancellor <nathan(a)kernel.org>

1 month, 1 week

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[PATCH] mfd: altera-sysmgr: Fix device reference leak in altr_sysmgr_regmap_lookup_by_phandle

by Miaoqian Lin

driver_find_device_by_of_node() calls driver_find_device(), which calls get_device(). get_device() increments the device's reference count, so driver_find_device_by_of_node() returns a device with its reference count incremented. We need to release this reference after usage to avoid a reference leak. Add put_device(dev) after dev_get_drvdata() to fix the reference leak. Found via static analysis. Fixes: f36e789a1f8d ("mfd: altera-sysmgr: Add SOCFPGA System Manager") Cc: stable(a)vger.kernel.org Signed-off-by: Miaoqian Lin <linmq006(a)gmail.com> --- drivers/mfd/altera-sysmgr.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mfd/altera-sysmgr.c b/drivers/mfd/altera-sysmgr.c index fb5f988e61f3..cb66b2fff536 100644 --- a/drivers/mfd/altera-sysmgr.c +++ b/drivers/mfd/altera-sysmgr.c @@ -116,6 +116,7 @@ struct regmap *altr_sysmgr_regmap_lookup_by_phandle(struct device_node *np, return ERR_PTR(-EPROBE_DEFER); sysmgr = dev_get_drvdata(dev); + put_device(dev); return sysmgr->regmap; } -- 2.39.5 (Apple Git-154)

1 month, 1 week

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