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Groups > linux.kernel > #1451435
| From | Mike Travis <travis@sgi.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 2/4] x86/platform/UV: Fix problem with bad UV4 EFI System Table causing panic |
| Date | 2016-07-27 19:50 +0200 |
| Message-ID | <rZB7X-2ta-3@gated-at.bofh.it> (permalink) |
| References | <rZB7X-2ta-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Fix a problem that occurs if for some reason the UV4 EFI System Table
is not available, the check inadvertantly can cause a panic.
Reviewed-by: Dimitri Sivanich <sivanich@sgi.com>
Reviewed-by: Nathan Zimmer <nzimmer@sgi.com>
Tested-by: Frank Ramsay <framsay@sgi.com>
Tested-by: John Estabrook <estabrook@sgi.com>
Signed-off-by: Mike Travis <travis@sgi.com>
---
arch/x86/platform/uv/bios_uv.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- linux-3.12.orig/arch/x86/platform/uv/bios_uv.c
+++ linux-3.12/arch/x86/platform/uv/bios_uv.c
@@ -201,11 +201,12 @@ void uv_bios_init(void)
}
if (uv_systab->revision >= UV_SYSTAB_VERSION_UV4) {
+ int size = uv_systab->size;
+
iounmap(uv_systab);
- uv_systab = ioremap(efi.uv_systab, uv_systab->size);
+ uv_systab = ioremap(efi.uv_systab, size);
if (!uv_systab) {
- pr_err("UV: UVsystab: ioremap(%d) failed!\n",
- uv_systab->size);
+ pr_err("UV: UVsystab: ioremap(%d) failed!\n", size);
return;
}
}
--
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[PATCH 2/4] x86/platform/UV: Fix problem with bad UV4 EFI System Table causing panic Mike Travis <travis@sgi.com> - 2016-07-27 19:50 +0200
Re: [PATCH 2/4] x86/platform/UV: Fix problem with bad UV4 EFI System Table causing panic Thomas Gleixner <tglx@linutronix.de> - 2016-07-29 13:20 +0200
Re: [PATCH 2/4] x86/platform/UV: Fix problem with bad UV4 EFI System Table causing panic Mike Travis <travis@sgi.com> - 2016-07-29 18:40 +0200
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