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FAILED: patch "[PATCH] riscv/futex: sign extend compare value in atomic cmpxchg" 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 599c44cd21f4967774e0acf58f734009be4aea9a # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025030424-jawed-limes-5ba5@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 599c44cd21f4967774e0acf58f734009be4aea9a Mon Sep 17 00:00:00 2001 From: Andreas Schwab <schwab(a)suse.de> Date: Mon, 3 Feb 2025 11:06:00 +0100 Subject: [PATCH] riscv/futex: sign extend compare value in atomic cmpxchg MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make sure the compare value in the lr/sc loop is sign extended to match what lr.w does. Fortunately, due to the compiler keeping the register contents sign extended anyway the lack of the explicit extension didn't result in wrong code so far, but this cannot be relied upon. Fixes: b90edb33010b ("RISC-V: Add futex support.") Signed-off-by: Andreas Schwab <schwab(a)suse.de> Reviewed-by: Alexandre Ghiti <alexghiti(a)rivosinc.com> Reviewed-by: Björn Töpel <bjorn(a)rivosinc.com> Cc: stable(a)vger.kernel.org Link: https://lore.kernel.org/r/mvmfrkv2vhz.fsf@suse.de Signed-off-by: Palmer Dabbelt <palmer(a)rivosinc.com> diff --git a/arch/riscv/include/asm/futex.h b/arch/riscv/include/asm/futex.h index 72be100afa23..90c86b115e00 100644 --- a/arch/riscv/include/asm/futex.h +++ b/arch/riscv/include/asm/futex.h @@ -93,7 +93,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, _ASM_EXTABLE_UACCESS_ERR(1b, 3b, %[r]) \ _ASM_EXTABLE_UACCESS_ERR(2b, 3b, %[r]) \ : [r] "+r" (ret), [v] "=&r" (val), [u] "+m" (*uaddr), [t] "=&r" (tmp) - : [ov] "Jr" (oldval), [nv] "Jr" (newval) + : [ov] "Jr" ((long)(int)oldval), [nv] "Jr" (newval) : "memory"); __disable_user_access();

4 months

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FAILED: patch "[PATCH] riscv/futex: sign extend compare value in atomic cmpxchg" 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 599c44cd21f4967774e0acf58f734009be4aea9a # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025030419-satin-cogwheel-ae89@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 599c44cd21f4967774e0acf58f734009be4aea9a Mon Sep 17 00:00:00 2001 From: Andreas Schwab <schwab(a)suse.de> Date: Mon, 3 Feb 2025 11:06:00 +0100 Subject: [PATCH] riscv/futex: sign extend compare value in atomic cmpxchg MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make sure the compare value in the lr/sc loop is sign extended to match what lr.w does. Fortunately, due to the compiler keeping the register contents sign extended anyway the lack of the explicit extension didn't result in wrong code so far, but this cannot be relied upon. Fixes: b90edb33010b ("RISC-V: Add futex support.") Signed-off-by: Andreas Schwab <schwab(a)suse.de> Reviewed-by: Alexandre Ghiti <alexghiti(a)rivosinc.com> Reviewed-by: Björn Töpel <bjorn(a)rivosinc.com> Cc: stable(a)vger.kernel.org Link: https://lore.kernel.org/r/mvmfrkv2vhz.fsf@suse.de Signed-off-by: Palmer Dabbelt <palmer(a)rivosinc.com> diff --git a/arch/riscv/include/asm/futex.h b/arch/riscv/include/asm/futex.h index 72be100afa23..90c86b115e00 100644 --- a/arch/riscv/include/asm/futex.h +++ b/arch/riscv/include/asm/futex.h @@ -93,7 +93,7 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, _ASM_EXTABLE_UACCESS_ERR(1b, 3b, %[r]) \ _ASM_EXTABLE_UACCESS_ERR(2b, 3b, %[r]) \ : [r] "+r" (ret), [v] "=&r" (val), [u] "+m" (*uaddr), [t] "=&r" (tmp) - : [ov] "Jr" (oldval), [nv] "Jr" (newval) + : [ov] "Jr" ((long)(int)oldval), [nv] "Jr" (newval) : "memory"); __disable_user_access();

4 months

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FAILED: patch "[PATCH] riscv/atomic: Do proper sign extension also for unsigned in" 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 1898300abf3508bca152e65b36cce5bf93d7e63e # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025030410-humbling-occupy-f10c@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 1898300abf3508bca152e65b36cce5bf93d7e63e Mon Sep 17 00:00:00 2001 From: Andreas Schwab <schwab(a)suse.de> Date: Thu, 30 Jan 2025 10:25:38 +0100 Subject: [PATCH] riscv/atomic: Do proper sign extension also for unsigned in arch_cmpxchg Sign extend also an unsigned compare value to match what lr.w is doing. Otherwise try_cmpxchg may spuriously return true when used on a u32 value that has the sign bit set, as it happens often in inode_set_ctime_current. Do this in three conversion steps. The first conversion to long is needed to avoid a -Wpointer-to-int-cast warning when arch_cmpxchg is used with a pointer type. Then convert to int and back to long to always sign extend the 32-bit value to 64-bit. Fixes: 6c58f25e6938 ("riscv/atomic: Fix sign extension for RV64I") Signed-off-by: Andreas Schwab <schwab(a)suse.de> Reviewed-by: Alexandre Ghiti <alexghiti(a)rivosinc.com> Reviewed-by: Andrew Jones <ajones(a)ventanamicro.com> Tested-by: Xi Ruoyao <xry111(a)xry111.site> Cc: stable(a)vger.kernel.org Link: https://lore.kernel.org/r/mvmed0k4prh.fsf@suse.de Signed-off-by: Palmer Dabbelt <palmer(a)rivosinc.com> diff --git a/arch/riscv/include/asm/cmpxchg.h b/arch/riscv/include/asm/cmpxchg.h index 4cadc56220fe..427c41dde643 100644 --- a/arch/riscv/include/asm/cmpxchg.h +++ b/arch/riscv/include/asm/cmpxchg.h @@ -231,7 +231,7 @@ __arch_cmpxchg(".w", ".w" sc_sfx, ".w" cas_sfx, \ sc_prepend, sc_append, \ cas_prepend, cas_append, \ - __ret, __ptr, (long), __old, __new); \ + __ret, __ptr, (long)(int)(long), __old, __new); \ break; \ case 8: \ __arch_cmpxchg(".d", ".d" sc_sfx, ".d" cas_sfx, \

4 months

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FAILED: patch "[PATCH] riscv/atomic: Do proper sign extension also for unsigned in" 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 1898300abf3508bca152e65b36cce5bf93d7e63e # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025030409-squirt-handprint-3e7c@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 1898300abf3508bca152e65b36cce5bf93d7e63e Mon Sep 17 00:00:00 2001 From: Andreas Schwab <schwab(a)suse.de> Date: Thu, 30 Jan 2025 10:25:38 +0100 Subject: [PATCH] riscv/atomic: Do proper sign extension also for unsigned in arch_cmpxchg Sign extend also an unsigned compare value to match what lr.w is doing. Otherwise try_cmpxchg may spuriously return true when used on a u32 value that has the sign bit set, as it happens often in inode_set_ctime_current. Do this in three conversion steps. The first conversion to long is needed to avoid a -Wpointer-to-int-cast warning when arch_cmpxchg is used with a pointer type. Then convert to int and back to long to always sign extend the 32-bit value to 64-bit. Fixes: 6c58f25e6938 ("riscv/atomic: Fix sign extension for RV64I") Signed-off-by: Andreas Schwab <schwab(a)suse.de> Reviewed-by: Alexandre Ghiti <alexghiti(a)rivosinc.com> Reviewed-by: Andrew Jones <ajones(a)ventanamicro.com> Tested-by: Xi Ruoyao <xry111(a)xry111.site> Cc: stable(a)vger.kernel.org Link: https://lore.kernel.org/r/mvmed0k4prh.fsf@suse.de Signed-off-by: Palmer Dabbelt <palmer(a)rivosinc.com> diff --git a/arch/riscv/include/asm/cmpxchg.h b/arch/riscv/include/asm/cmpxchg.h index 4cadc56220fe..427c41dde643 100644 --- a/arch/riscv/include/asm/cmpxchg.h +++ b/arch/riscv/include/asm/cmpxchg.h @@ -231,7 +231,7 @@ __arch_cmpxchg(".w", ".w" sc_sfx, ".w" cas_sfx, \ sc_prepend, sc_append, \ cas_prepend, cas_append, \ - __ret, __ptr, (long), __old, __new); \ + __ret, __ptr, (long)(int)(long), __old, __new); \ break; \ case 8: \ __arch_cmpxchg(".d", ".d" sc_sfx, ".d" cas_sfx, \

4 months

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FAILED: patch "[PATCH] riscv/atomic: Do proper sign extension also for unsigned in" 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 1898300abf3508bca152e65b36cce5bf93d7e63e # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025030409-senior-devotion-4685@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 1898300abf3508bca152e65b36cce5bf93d7e63e Mon Sep 17 00:00:00 2001 From: Andreas Schwab <schwab(a)suse.de> Date: Thu, 30 Jan 2025 10:25:38 +0100 Subject: [PATCH] riscv/atomic: Do proper sign extension also for unsigned in arch_cmpxchg Sign extend also an unsigned compare value to match what lr.w is doing. Otherwise try_cmpxchg may spuriously return true when used on a u32 value that has the sign bit set, as it happens often in inode_set_ctime_current. Do this in three conversion steps. The first conversion to long is needed to avoid a -Wpointer-to-int-cast warning when arch_cmpxchg is used with a pointer type. Then convert to int and back to long to always sign extend the 32-bit value to 64-bit. Fixes: 6c58f25e6938 ("riscv/atomic: Fix sign extension for RV64I") Signed-off-by: Andreas Schwab <schwab(a)suse.de> Reviewed-by: Alexandre Ghiti <alexghiti(a)rivosinc.com> Reviewed-by: Andrew Jones <ajones(a)ventanamicro.com> Tested-by: Xi Ruoyao <xry111(a)xry111.site> Cc: stable(a)vger.kernel.org Link: https://lore.kernel.org/r/mvmed0k4prh.fsf@suse.de Signed-off-by: Palmer Dabbelt <palmer(a)rivosinc.com> diff --git a/arch/riscv/include/asm/cmpxchg.h b/arch/riscv/include/asm/cmpxchg.h index 4cadc56220fe..427c41dde643 100644 --- a/arch/riscv/include/asm/cmpxchg.h +++ b/arch/riscv/include/asm/cmpxchg.h @@ -231,7 +231,7 @@ __arch_cmpxchg(".w", ".w" sc_sfx, ".w" cas_sfx, \ sc_prepend, sc_append, \ cas_prepend, cas_append, \ - __ret, __ptr, (long), __old, __new); \ + __ret, __ptr, (long)(int)(long), __old, __new); \ break; \ case 8: \ __arch_cmpxchg(".d", ".d" sc_sfx, ".d" cas_sfx, \

4 months

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FAILED: patch "[PATCH] riscv/atomic: Do proper sign extension also for unsigned in" failed to apply to 6.6-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.6-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-6.6.y git checkout FETCH_HEAD git cherry-pick -x 1898300abf3508bca152e65b36cce5bf93d7e63e # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025030408-python-steerable-a903@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 1898300abf3508bca152e65b36cce5bf93d7e63e Mon Sep 17 00:00:00 2001 From: Andreas Schwab <schwab(a)suse.de> Date: Thu, 30 Jan 2025 10:25:38 +0100 Subject: [PATCH] riscv/atomic: Do proper sign extension also for unsigned in arch_cmpxchg Sign extend also an unsigned compare value to match what lr.w is doing. Otherwise try_cmpxchg may spuriously return true when used on a u32 value that has the sign bit set, as it happens often in inode_set_ctime_current. Do this in three conversion steps. The first conversion to long is needed to avoid a -Wpointer-to-int-cast warning when arch_cmpxchg is used with a pointer type. Then convert to int and back to long to always sign extend the 32-bit value to 64-bit. Fixes: 6c58f25e6938 ("riscv/atomic: Fix sign extension for RV64I") Signed-off-by: Andreas Schwab <schwab(a)suse.de> Reviewed-by: Alexandre Ghiti <alexghiti(a)rivosinc.com> Reviewed-by: Andrew Jones <ajones(a)ventanamicro.com> Tested-by: Xi Ruoyao <xry111(a)xry111.site> Cc: stable(a)vger.kernel.org Link: https://lore.kernel.org/r/mvmed0k4prh.fsf@suse.de Signed-off-by: Palmer Dabbelt <palmer(a)rivosinc.com> diff --git a/arch/riscv/include/asm/cmpxchg.h b/arch/riscv/include/asm/cmpxchg.h index 4cadc56220fe..427c41dde643 100644 --- a/arch/riscv/include/asm/cmpxchg.h +++ b/arch/riscv/include/asm/cmpxchg.h @@ -231,7 +231,7 @@ __arch_cmpxchg(".w", ".w" sc_sfx, ".w" cas_sfx, \ sc_prepend, sc_append, \ cas_prepend, cas_append, \ - __ret, __ptr, (long), __old, __new); \ + __ret, __ptr, (long)(int)(long), __old, __new); \ break; \ case 8: \ __arch_cmpxchg(".d", ".d" sc_sfx, ".d" cas_sfx, \

4 months

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FAILED: patch "[PATCH] riscv/atomic: Do proper sign extension also for unsigned in" 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 1898300abf3508bca152e65b36cce5bf93d7e63e # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025030408-degraded-overpay-ac4a@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 1898300abf3508bca152e65b36cce5bf93d7e63e Mon Sep 17 00:00:00 2001 From: Andreas Schwab <schwab(a)suse.de> Date: Thu, 30 Jan 2025 10:25:38 +0100 Subject: [PATCH] riscv/atomic: Do proper sign extension also for unsigned in arch_cmpxchg Sign extend also an unsigned compare value to match what lr.w is doing. Otherwise try_cmpxchg may spuriously return true when used on a u32 value that has the sign bit set, as it happens often in inode_set_ctime_current. Do this in three conversion steps. The first conversion to long is needed to avoid a -Wpointer-to-int-cast warning when arch_cmpxchg is used with a pointer type. Then convert to int and back to long to always sign extend the 32-bit value to 64-bit. Fixes: 6c58f25e6938 ("riscv/atomic: Fix sign extension for RV64I") Signed-off-by: Andreas Schwab <schwab(a)suse.de> Reviewed-by: Alexandre Ghiti <alexghiti(a)rivosinc.com> Reviewed-by: Andrew Jones <ajones(a)ventanamicro.com> Tested-by: Xi Ruoyao <xry111(a)xry111.site> Cc: stable(a)vger.kernel.org Link: https://lore.kernel.org/r/mvmed0k4prh.fsf@suse.de Signed-off-by: Palmer Dabbelt <palmer(a)rivosinc.com> diff --git a/arch/riscv/include/asm/cmpxchg.h b/arch/riscv/include/asm/cmpxchg.h index 4cadc56220fe..427c41dde643 100644 --- a/arch/riscv/include/asm/cmpxchg.h +++ b/arch/riscv/include/asm/cmpxchg.h @@ -231,7 +231,7 @@ __arch_cmpxchg(".w", ".w" sc_sfx, ".w" cas_sfx, \ sc_prepend, sc_append, \ cas_prepend, cas_append, \ - __ret, __ptr, (long), __old, __new); \ + __ret, __ptr, (long)(int)(long), __old, __new); \ break; \ case 8: \ __arch_cmpxchg(".d", ".d" sc_sfx, ".d" cas_sfx, \

4 months

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FAILED: patch "[PATCH] riscv/atomic: Do proper sign extension also for unsigned in" failed to apply to 6.12-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.12-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-6.12.y git checkout FETCH_HEAD git cherry-pick -x 1898300abf3508bca152e65b36cce5bf93d7e63e # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025030407-tiny-slain-3c45@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 1898300abf3508bca152e65b36cce5bf93d7e63e Mon Sep 17 00:00:00 2001 From: Andreas Schwab <schwab(a)suse.de> Date: Thu, 30 Jan 2025 10:25:38 +0100 Subject: [PATCH] riscv/atomic: Do proper sign extension also for unsigned in arch_cmpxchg Sign extend also an unsigned compare value to match what lr.w is doing. Otherwise try_cmpxchg may spuriously return true when used on a u32 value that has the sign bit set, as it happens often in inode_set_ctime_current. Do this in three conversion steps. The first conversion to long is needed to avoid a -Wpointer-to-int-cast warning when arch_cmpxchg is used with a pointer type. Then convert to int and back to long to always sign extend the 32-bit value to 64-bit. Fixes: 6c58f25e6938 ("riscv/atomic: Fix sign extension for RV64I") Signed-off-by: Andreas Schwab <schwab(a)suse.de> Reviewed-by: Alexandre Ghiti <alexghiti(a)rivosinc.com> Reviewed-by: Andrew Jones <ajones(a)ventanamicro.com> Tested-by: Xi Ruoyao <xry111(a)xry111.site> Cc: stable(a)vger.kernel.org Link: https://lore.kernel.org/r/mvmed0k4prh.fsf@suse.de Signed-off-by: Palmer Dabbelt <palmer(a)rivosinc.com> diff --git a/arch/riscv/include/asm/cmpxchg.h b/arch/riscv/include/asm/cmpxchg.h index 4cadc56220fe..427c41dde643 100644 --- a/arch/riscv/include/asm/cmpxchg.h +++ b/arch/riscv/include/asm/cmpxchg.h @@ -231,7 +231,7 @@ __arch_cmpxchg(".w", ".w" sc_sfx, ".w" cas_sfx, \ sc_prepend, sc_append, \ cas_prepend, cas_append, \ - __ret, __ptr, (long), __old, __new); \ + __ret, __ptr, (long)(int)(long), __old, __new); \ break; \ case 8: \ __arch_cmpxchg(".d", ".d" sc_sfx, ".d" cas_sfx, \

4 months

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FAILED: patch "[PATCH] ima: Reset IMA_NONACTION_RULE_FLAGS after post_setattr" 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 57a0ef02fefafc4b9603e33a18b669ba5ce59ba3 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025030437-anaerobic-valiant-b3b2@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 57a0ef02fefafc4b9603e33a18b669ba5ce59ba3 Mon Sep 17 00:00:00 2001 From: Roberto Sassu <roberto.sassu(a)huawei.com> Date: Tue, 4 Feb 2025 13:57:20 +0100 Subject: [PATCH] ima: Reset IMA_NONACTION_RULE_FLAGS after post_setattr Commit 0d73a55208e9 ("ima: re-introduce own integrity cache lock") mistakenly reverted the performance improvement introduced in commit 42a4c603198f0 ("ima: fix ima_inode_post_setattr"). The unused bit mask was subsequently removed by commit 11c60f23ed13 ("integrity: Remove unused macro IMA_ACTION_RULE_FLAGS"). Restore the performance improvement by introducing the new mask IMA_NONACTION_RULE_FLAGS, equal to IMA_NONACTION_FLAGS without IMA_NEW_FILE, which is not a rule-specific flag. Finally, reset IMA_NONACTION_RULE_FLAGS instead of IMA_NONACTION_FLAGS in process_measurement(), if the IMA_CHANGE_ATTR atomic flag is set (after file metadata modification). With this patch, new files for which metadata were modified while they are still open, can be reopened before the last file close (when security.ima is written), since the IMA_NEW_FILE flag is not cleared anymore. Otherwise, appraisal fails because security.ima is missing (files with IMA_NEW_FILE set are an exception). Cc: stable(a)vger.kernel.org # v4.16.x Fixes: 0d73a55208e9 ("ima: re-introduce own integrity cache lock") Signed-off-by: Roberto Sassu <roberto.sassu(a)huawei.com> Signed-off-by: Mimi Zohar <zohar(a)linux.ibm.com> diff --git a/security/integrity/ima/ima.h b/security/integrity/ima/ima.h index 24d09ea91b87..a4f284bd846c 100644 --- a/security/integrity/ima/ima.h +++ b/security/integrity/ima/ima.h @@ -149,6 +149,9 @@ struct ima_kexec_hdr { #define IMA_CHECK_BLACKLIST 0x40000000 #define IMA_VERITY_REQUIRED 0x80000000 +/* Exclude non-action flags which are not rule-specific. */ +#define IMA_NONACTION_RULE_FLAGS (IMA_NONACTION_FLAGS & ~IMA_NEW_FILE) + #define IMA_DO_MASK (IMA_MEASURE | IMA_APPRAISE | IMA_AUDIT | \ IMA_HASH | IMA_APPRAISE_SUBMASK) #define IMA_DONE_MASK (IMA_MEASURED | IMA_APPRAISED | IMA_AUDITED | \ diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c index f2c9affa0c2a..28b8b0db6f9b 100644 --- a/security/integrity/ima/ima_main.c +++ b/security/integrity/ima/ima_main.c @@ -269,10 +269,13 @@ static int process_measurement(struct file *file, const struct cred *cred, mutex_lock(&iint->mutex); if (test_and_clear_bit(IMA_CHANGE_ATTR, &iint->atomic_flags)) - /* reset appraisal flags if ima_inode_post_setattr was called */ + /* + * Reset appraisal flags (action and non-action rule-specific) + * if ima_inode_post_setattr was called. + */ iint->flags &= ~(IMA_APPRAISE | IMA_APPRAISED | IMA_APPRAISE_SUBMASK | IMA_APPRAISED_SUBMASK | - IMA_NONACTION_FLAGS); + IMA_NONACTION_RULE_FLAGS); /* * Re-evaulate the file if either the xattr has changed or the

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FAILED: patch "[PATCH] ima: Reset IMA_NONACTION_RULE_FLAGS after post_setattr" 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 57a0ef02fefafc4b9603e33a18b669ba5ce59ba3 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025030437-jurist-skincare-ee63@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 57a0ef02fefafc4b9603e33a18b669ba5ce59ba3 Mon Sep 17 00:00:00 2001 From: Roberto Sassu <roberto.sassu(a)huawei.com> Date: Tue, 4 Feb 2025 13:57:20 +0100 Subject: [PATCH] ima: Reset IMA_NONACTION_RULE_FLAGS after post_setattr Commit 0d73a55208e9 ("ima: re-introduce own integrity cache lock") mistakenly reverted the performance improvement introduced in commit 42a4c603198f0 ("ima: fix ima_inode_post_setattr"). The unused bit mask was subsequently removed by commit 11c60f23ed13 ("integrity: Remove unused macro IMA_ACTION_RULE_FLAGS"). Restore the performance improvement by introducing the new mask IMA_NONACTION_RULE_FLAGS, equal to IMA_NONACTION_FLAGS without IMA_NEW_FILE, which is not a rule-specific flag. Finally, reset IMA_NONACTION_RULE_FLAGS instead of IMA_NONACTION_FLAGS in process_measurement(), if the IMA_CHANGE_ATTR atomic flag is set (after file metadata modification). With this patch, new files for which metadata were modified while they are still open, can be reopened before the last file close (when security.ima is written), since the IMA_NEW_FILE flag is not cleared anymore. Otherwise, appraisal fails because security.ima is missing (files with IMA_NEW_FILE set are an exception). Cc: stable(a)vger.kernel.org # v4.16.x Fixes: 0d73a55208e9 ("ima: re-introduce own integrity cache lock") Signed-off-by: Roberto Sassu <roberto.sassu(a)huawei.com> Signed-off-by: Mimi Zohar <zohar(a)linux.ibm.com> diff --git a/security/integrity/ima/ima.h b/security/integrity/ima/ima.h index 24d09ea91b87..a4f284bd846c 100644 --- a/security/integrity/ima/ima.h +++ b/security/integrity/ima/ima.h @@ -149,6 +149,9 @@ struct ima_kexec_hdr { #define IMA_CHECK_BLACKLIST 0x40000000 #define IMA_VERITY_REQUIRED 0x80000000 +/* Exclude non-action flags which are not rule-specific. */ +#define IMA_NONACTION_RULE_FLAGS (IMA_NONACTION_FLAGS & ~IMA_NEW_FILE) + #define IMA_DO_MASK (IMA_MEASURE | IMA_APPRAISE | IMA_AUDIT | \ IMA_HASH | IMA_APPRAISE_SUBMASK) #define IMA_DONE_MASK (IMA_MEASURED | IMA_APPRAISED | IMA_AUDITED | \ diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c index f2c9affa0c2a..28b8b0db6f9b 100644 --- a/security/integrity/ima/ima_main.c +++ b/security/integrity/ima/ima_main.c @@ -269,10 +269,13 @@ static int process_measurement(struct file *file, const struct cred *cred, mutex_lock(&iint->mutex); if (test_and_clear_bit(IMA_CHANGE_ATTR, &iint->atomic_flags)) - /* reset appraisal flags if ima_inode_post_setattr was called */ + /* + * Reset appraisal flags (action and non-action rule-specific) + * if ima_inode_post_setattr was called. + */ iint->flags &= ~(IMA_APPRAISE | IMA_APPRAISED | IMA_APPRAISE_SUBMASK | IMA_APPRAISED_SUBMASK | - IMA_NONACTION_FLAGS); + IMA_NONACTION_RULE_FLAGS); /* * Re-evaulate the file if either the xattr has changed or the

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