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FAILED: patch "[PATCH] parisc: Try to fixup kernel exception in bad_area_nosemaphore" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

4 months, 1 week

FAILED: patch "[PATCH] parisc: Revise gateway LWS calls to probe user read access" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x f6334f4ae9a4e962ba74b026e1d965dfdf8cbef8 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025082106-pantyhose-finished-9731@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From f6334f4ae9a4e962ba74b026e1d965dfdf8cbef8 Mon Sep 17 00:00:00 2001 From: John David Anglin <dave.anglin(a)bell.net> Date: Fri, 25 Jul 2025 12:12:14 -0400 Subject: [PATCH] parisc: Revise gateway LWS calls to probe user read access We use load and stbys,e instructions to trigger memory reference interruptions without writing to memory. Because of the way read access support is implemented, read access interruptions are only triggered at privilege levels 2 and 3. The kernel and gateway page execute at privilege level 0, so this code never triggers a read access interruption. Thus, it is currently possible for user code to execute a LWS compare and swap operation at an address that is read protected at privilege level 3 (PRIV_USER). Fix this by probing read access rights at privilege level 3 and branching to lws_fault if access isn't allowed. Signed-off-by: John David Anglin <dave.anglin(a)bell.net> Signed-off-by: Helge Deller <deller(a)gmx.de> Cc: stable(a)vger.kernel.org # v5.12+ diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S index 0fa81bf1466b..f58c4bccfbce 100644 --- a/arch/parisc/kernel/syscall.S +++ b/arch/parisc/kernel/syscall.S @@ -613,6 +613,9 @@ lws_compare_and_swap32: lws_compare_and_swap: /* Trigger memory reference interruptions without writing to memory */ 1: ldw 0(%r26), %r28 + proberi (%r26), PRIV_USER, %r28 + comb,=,n %r28, %r0, lws_fault /* backwards, likely not taken */ + nop 2: stbys,e %r0, 0(%r26) /* Calculate 8-bit hash index from virtual address */ @@ -767,6 +770,9 @@ cas2_lock_start: copy %r26, %r28 depi_safe 0, 31, 2, %r28 10: ldw 0(%r28), %r1 + proberi (%r28), PRIV_USER, %r1 + comb,=,n %r1, %r0, lws_fault /* backwards, likely not taken */ + nop 11: stbys,e %r0, 0(%r28) /* Calculate 8-bit hash index from virtual address */ @@ -951,41 +957,47 @@ atomic_xchg_begin: /* 8-bit exchange */ 1: ldb 0(%r24), %r20 + proberi (%r24), PRIV_USER, %r20 + comb,=,n %r20, %r0, lws_fault /* backwards, likely not taken */ + nop copy %r23, %r20 depi_safe 0, 31, 2, %r20 b atomic_xchg_start 2: stbys,e %r0, 0(%r20) - nop - nop - nop /* 16-bit exchange */ 3: ldh 0(%r24), %r20 + proberi (%r24), PRIV_USER, %r20 + comb,=,n %r20, %r0, lws_fault /* backwards, likely not taken */ + nop copy %r23, %r20 depi_safe 0, 31, 2, %r20 b atomic_xchg_start 4: stbys,e %r0, 0(%r20) - nop - nop - nop /* 32-bit exchange */ 5: ldw 0(%r24), %r20 + proberi (%r24), PRIV_USER, %r20 + comb,=,n %r20, %r0, lws_fault /* backwards, likely not taken */ + nop b atomic_xchg_start 6: stbys,e %r0, 0(%r23) nop nop - nop - nop - nop /* 64-bit exchange */ #ifdef CONFIG_64BIT 7: ldd 0(%r24), %r20 + proberi (%r24), PRIV_USER, %r20 + comb,=,n %r20, %r0, lws_fault /* backwards, likely not taken */ + nop 8: stdby,e %r0, 0(%r23) #else 7: ldw 0(%r24), %r20 8: ldw 4(%r24), %r20 + proberi (%r24), PRIV_USER, %r20 + comb,=,n %r20, %r0, lws_fault /* backwards, likely not taken */ + nop copy %r23, %r20 depi_safe 0, 31, 2, %r20 9: stbys,e %r0, 0(%r20)

4 months, 1 week

FAILED: patch "[PATCH] parisc: Revise __get_user() to probe user read access" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

4 months, 1 week

FAILED: patch "[PATCH] parisc: Rename pte_needs_flush() to pte_needs_cache_flush()" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

4 months, 1 week

FAILED: patch "[PATCH] parisc: Rename pte_needs_flush() to pte_needs_cache_flush()" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x 52ce9406a9625c4498c4eaa51e7a7ed9dcb9db16 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025082143-majesty-gracious-6a56@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 52ce9406a9625c4498c4eaa51e7a7ed9dcb9db16 Mon Sep 17 00:00:00 2001 From: John David Anglin <dave.anglin(a)bell.net> Date: Mon, 21 Jul 2025 15:56:04 -0400 Subject: [PATCH] parisc: Rename pte_needs_flush() to pte_needs_cache_flush() in cache.c The local name used in cache.c conflicts the declaration in include/asm-generic/tlb.h. Signed-off-by: John David Anglin <dave.anglin(a)bell.net> Signed-off-by: Helge Deller <deller(a)gmx.de> Cc: stable(a)vger.kernel.org # v5.12+ diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c index db531e58d70e..3b37a7e7abe4 100644 --- a/arch/parisc/kernel/cache.c +++ b/arch/parisc/kernel/cache.c @@ -429,7 +429,7 @@ static inline pte_t *get_ptep(struct mm_struct *mm, unsigned long addr) return ptep; } -static inline bool pte_needs_flush(pte_t pte) +static inline bool pte_needs_cache_flush(pte_t pte) { return (pte_val(pte) & (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_NO_CACHE)) == (_PAGE_PRESENT | _PAGE_ACCESSED); @@ -630,7 +630,7 @@ static void flush_cache_page_if_present(struct vm_area_struct *vma, ptep = get_ptep(vma->vm_mm, vmaddr); if (ptep) { pte = ptep_get(ptep); - needs_flush = pte_needs_flush(pte); + needs_flush = pte_needs_cache_flush(pte); pte_unmap(ptep); } if (needs_flush)

4 months, 1 week

FAILED: patch "[PATCH] parisc: Makefile: explain that 64BIT requires both 32-bit and" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x 305ab0a748c52eeaeb01d8cff6408842d19e5cb5 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025082125-aqueduct-distant-3557@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 305ab0a748c52eeaeb01d8cff6408842d19e5cb5 Mon Sep 17 00:00:00 2001 From: Randy Dunlap <rdunlap(a)infradead.org> Date: Wed, 25 Jun 2025 00:30:54 -0700 Subject: [PATCH] parisc: Makefile: explain that 64BIT requires both 32-bit and 64-bit compilers For building a 64-bit kernel, both 32-bit and 64-bit VDSO binaries are built, so both 32-bit and 64-bit compilers (and tools) should be in the PATH environment variable. Signed-off-by: Randy Dunlap <rdunlap(a)infradead.org> Cc: "James E.J. Bottomley" <James.Bottomley(a)HansenPartnership.com> Cc: Helge Deller <deller(a)gmx.de> Cc: linux-parisc(a)vger.kernel.org Signed-off-by: Helge Deller <deller(a)gmx.de> Cc: stable(a)vger.kernel.org # v5.3+ diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile index 9cd9aa3d16f2..48ae3c79557a 100644 --- a/arch/parisc/Makefile +++ b/arch/parisc/Makefile @@ -39,7 +39,9 @@ endif export LD_BFD -# Set default 32 bits cross compilers for vdso +# Set default 32 bits cross compilers for vdso. +# This means that for 64BIT, both the 64-bit tools and the 32-bit tools +# need to be in the path. CC_ARCHES_32 = hppa hppa2.0 hppa1.1 CC_SUFFIXES = linux linux-gnu unknown-linux-gnu suse-linux CROSS32_COMPILE := $(call cc-cross-prefix, \

4 months, 1 week

FAILED: patch "[PATCH] parisc: Makefile: explain that 64BIT requires both 32-bit and" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x 305ab0a748c52eeaeb01d8cff6408842d19e5cb5 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025082124-regulator-supply-7bbe@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 305ab0a748c52eeaeb01d8cff6408842d19e5cb5 Mon Sep 17 00:00:00 2001 From: Randy Dunlap <rdunlap(a)infradead.org> Date: Wed, 25 Jun 2025 00:30:54 -0700 Subject: [PATCH] parisc: Makefile: explain that 64BIT requires both 32-bit and 64-bit compilers For building a 64-bit kernel, both 32-bit and 64-bit VDSO binaries are built, so both 32-bit and 64-bit compilers (and tools) should be in the PATH environment variable. Signed-off-by: Randy Dunlap <rdunlap(a)infradead.org> Cc: "James E.J. Bottomley" <James.Bottomley(a)HansenPartnership.com> Cc: Helge Deller <deller(a)gmx.de> Cc: linux-parisc(a)vger.kernel.org Signed-off-by: Helge Deller <deller(a)gmx.de> Cc: stable(a)vger.kernel.org # v5.3+ diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile index 9cd9aa3d16f2..48ae3c79557a 100644 --- a/arch/parisc/Makefile +++ b/arch/parisc/Makefile @@ -39,7 +39,9 @@ endif export LD_BFD -# Set default 32 bits cross compilers for vdso +# Set default 32 bits cross compilers for vdso. +# This means that for 64BIT, both the 64-bit tools and the 32-bit tools +# need to be in the path. CC_ARCHES_32 = hppa hppa2.0 hppa1.1 CC_SUFFIXES = linux linux-gnu unknown-linux-gnu suse-linux CROSS32_COMPILE := $(call cc-cross-prefix, \

4 months, 1 week

FAILED: patch "[PATCH] parisc: Makefile: explain that 64BIT requires both 32-bit and" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

4 months, 1 week

FAILED: patch "[PATCH] parisc: Drop WARN_ON_ONCE() from flush_cache_vmap" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x 4eab1c27ce1f0e89ab67b01bf1e4e4c75215708a # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025082107-alabaster-monotype-aac8@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 4eab1c27ce1f0e89ab67b01bf1e4e4c75215708a Mon Sep 17 00:00:00 2001 From: John David Anglin <dave.anglin(a)bell.net> Date: Mon, 21 Jul 2025 16:18:41 -0400 Subject: [PATCH] parisc: Drop WARN_ON_ONCE() from flush_cache_vmap I have observed warning to occassionally trigger. Signed-off-by: John David Anglin <dave.anglin(a)bell.net> Signed-off-by: Helge Deller <deller(a)gmx.de> Cc: stable(a)vger.kernel.org # v5.12+ diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c index 3b37a7e7abe4..37ca484cc495 100644 --- a/arch/parisc/kernel/cache.c +++ b/arch/parisc/kernel/cache.c @@ -841,7 +841,7 @@ void flush_cache_vmap(unsigned long start, unsigned long end) } vm = find_vm_area((void *)start); - if (WARN_ON_ONCE(!vm)) { + if (!vm) { flush_cache_all(); return; }

4 months, 1 week

FAILED: patch "[PATCH] parisc: Drop WARN_ON_ONCE() from flush_cache_vmap" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

4 months, 1 week

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Linux-stable-mirror August 2025