commit: 43bb3290045425ac89ef055e23ca1ba63f267465 Author: Mike Pagano <mpagano <AT> gentoo <DOT> org> AuthorDate: Sun Nov 19 15:18:02 2023 +0000 Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org> CommitDate: Sun Nov 19 15:18:02 2023 +0000 URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=43bb3290
prctl: Temporarily disable prctl(PR_SET_MDWE) on parisc Signed-off-by: Mike Pagano <mpagano <AT> gentoo.org> 0000_README | 4 ++++ 1730_parisc-Disable-prctl.patch | 51 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 55 insertions(+) diff --git a/0000_README b/0000_README index b98c4b39..2e6346ff 100644 --- a/0000_README +++ b/0000_README @@ -59,6 +59,10 @@ Patch: 1720_parisc-gen-mmap-top-down-layout-and-brk-randomization.patch From: https://lore.kernel.org/linux-parisc/ZVH2qeS1bG7%2F1J%2Fl@p100/T/#u Desc: Fix the mmap_base() calculation to include the stack-grows-upwards case +Patch: 1730_parisc-Disable-prctl.patch +From: https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git +Desc: prctl: Temporarily disable prctl(PR_SET_MDWE) on parisc + Patch: 1805_mm-disable-CONFIG-PER-VMA-LOCK-by-def.patch From: https://lore.kernel.org/all/[email protected]/ Desc: mm: disable CONFIG_PER_VMA_LOCK by default until its fixed diff --git a/1730_parisc-Disable-prctl.patch b/1730_parisc-Disable-prctl.patch new file mode 100644 index 00000000..f892d6a1 --- /dev/null +++ b/1730_parisc-Disable-prctl.patch @@ -0,0 +1,51 @@ +From 339b41ec357c24c02ed4aed6267dbfd443ee1e8e Mon Sep 17 00:00:00 2001 +From: Helge Deller <[email protected]> +Date: Mon, 13 Nov 2023 16:06:18 +0100 +Subject: prctl: Temporarily disable prctl(PR_SET_MDWE) on parisc + +systemd-254 tries to use prctl(PR_SET_MDWE) for systemd's +MemoryDenyWriteExecute functionality, but fails on PA-RISC/HPPA which +still needs executable stacks. + +Temporarily disable prctl(PR_SET_MDWE) by returning -ENODEV on parisc +for now. Note that we can't return -EINVAL since systemd will then try +to use seccomp instead. + +Reported-by: Sam James <[email protected]> +Signed-off-by: Helge Deller <[email protected]> +Link: https://lore.kernel.org/all/[email protected]/ +Link: https://github.com/systemd/systemd/issues/29775. +Cc: <[email protected]> # v6.3+ +--- + kernel/sys.c | 10 ++++++++-- + 1 file changed, 8 insertions(+), 2 deletions(-) + +diff --git a/kernel/sys.c b/kernel/sys.c +index 420d9cb9cc8e2..8e3eaf650d07d 100644 +--- a/kernel/sys.c ++++ b/kernel/sys.c +@@ -2700,10 +2700,16 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, + break; + #endif + case PR_SET_MDWE: +- error = prctl_set_mdwe(arg2, arg3, arg4, arg5); ++ if (IS_ENABLED(CONFIG_PARISC)) ++ error = -EINVAL; ++ else ++ error = prctl_set_mdwe(arg2, arg3, arg4, arg5); + break; + case PR_GET_MDWE: +- error = prctl_get_mdwe(arg2, arg3, arg4, arg5); ++ if (IS_ENABLED(CONFIG_PARISC)) ++ error = -EINVAL; ++ else ++ error = prctl_get_mdwe(arg2, arg3, arg4, arg5); + break; + case PR_SET_VMA: + error = prctl_set_vma(arg2, arg3, arg4, arg5); +-- +cgit +Filename: fallback-exec-stack.patch. Size: 2kb. View raw, copy, hex, or download this file. +View source code, the removal or expiry stories, or read the about page. + +This website does not claim ownership of, copyright on, and assumes no liability for provided content. Toggle color scheme.
