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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-04-27 10:21:29 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-04-27 10:21:29 -0700 |
| commit | 037904a22bf8b2c999a6e2a8ba971b549c1e9600 (patch) | |
| tree | b62e0b0feaf8efcd895e544815ee2e37a781588d /arch | |
| parent | Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip (diff) | |
| parent | x86/mm: Fix a crash with kmemleak_scan() (diff) | |
| download | linux-dev-037904a22bf8b2c999a6e2a8ba971b549c1e9600.tar.xz linux-dev-037904a22bf8b2c999a6e2a8ba971b549c1e9600.zip | |
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
- Fix an early boot crash in the RSDP parsing code by effectively
turning off the parsing call - we ran out of time but want to fix the
regression. The more involved fix is being worked on.
- Fix a crash that can trigger in the kmemlek code.
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Fix a crash with kmemleak_scan()
x86/boot: Disable RSDP parsing temporarily
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/boot/compressed/misc.c | 2 | ||||
| -rw-r--r-- | arch/x86/mm/init.c | 6 |
2 files changed, 7 insertions, 1 deletions
diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c index c0d6c560df69..5a237e8dbf8d 100644 --- a/arch/x86/boot/compressed/misc.c +++ b/arch/x86/boot/compressed/misc.c @@ -352,7 +352,7 @@ asmlinkage __visible void *extract_kernel(void *rmode, memptr heap, boot_params->hdr.loadflags &= ~KASLR_FLAG; /* Save RSDP address for later use. */ - boot_params->acpi_rsdp_addr = get_rsdp_addr(); + /* boot_params->acpi_rsdp_addr = get_rsdp_addr(); */ sanitize_boot_params(boot_params); diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index f905a2371080..8dacdb96899e 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -5,6 +5,7 @@ #include <linux/memblock.h> #include <linux/swapfile.h> #include <linux/swapops.h> +#include <linux/kmemleak.h> #include <asm/set_memory.h> #include <asm/e820/api.h> @@ -766,6 +767,11 @@ void free_init_pages(const char *what, unsigned long begin, unsigned long end) if (debug_pagealloc_enabled()) { pr_info("debug: unmapping init [mem %#010lx-%#010lx]\n", begin, end - 1); + /* + * Inform kmemleak about the hole in the memory since the + * corresponding pages will be unmapped. + */ + kmemleak_free_part((void *)begin, end - begin); set_memory_np(begin, (end - begin) >> PAGE_SHIFT); } else { /* |