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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 10:10:26 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 10:10:26 +0000 |
commit | 116e0f61852489520aaad930b8fcbe40834819bf (patch) | |
tree | e7cd8828fee4cf285d0b49d2eccc532ac1c064af /arch/x86/kernel/cpu/mce/core.c | |
parent | Releasing progress-linux version 6.1.76-1~progress6.99u1. (diff) | |
download | linux-116e0f61852489520aaad930b8fcbe40834819bf.tar.xz linux-116e0f61852489520aaad930b8fcbe40834819bf.zip |
Merging upstream version 6.1.82.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/x86/kernel/cpu/mce/core.c')
-rw-r--r-- | arch/x86/kernel/cpu/mce/core.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c index f1a748da5..cad6ea191 100644 --- a/arch/x86/kernel/cpu/mce/core.c +++ b/arch/x86/kernel/cpu/mce/core.c @@ -44,6 +44,7 @@ #include <linux/sync_core.h> #include <linux/task_work.h> #include <linux/hardirq.h> +#include <linux/kexec.h> #include <asm/intel-family.h> #include <asm/processor.h> @@ -239,6 +240,7 @@ static noinstr void mce_panic(const char *msg, struct mce *final, char *exp) struct llist_node *pending; struct mce_evt_llist *l; int apei_err = 0; + struct page *p; /* * Allow instrumentation around external facilities usage. Not that it @@ -292,6 +294,20 @@ static noinstr void mce_panic(const char *msg, struct mce *final, char *exp) if (!fake_panic) { if (panic_timeout == 0) panic_timeout = mca_cfg.panic_timeout; + + /* + * Kdump skips the poisoned page in order to avoid + * touching the error bits again. Poison the page even + * if the error is fatal and the machine is about to + * panic. + */ + if (kexec_crash_loaded()) { + if (final && (final->status & MCI_STATUS_ADDRV)) { + p = pfn_to_online_page(final->addr >> PAGE_SHIFT); + if (p) + SetPageHWPoison(p); + } + } panic(msg); } else pr_emerg(HW_ERR "Fake kernel panic: %s\n", msg); |