linux_dsm_epyc7002/arch/x86/mm
Peter Zijlstra c026b3591e x86, mm, perf: Allow recursive faults from interrupts
Waiman managed to trigger a PMI while in a emulate_vsyscall() fault,
the PMI in turn managed to trigger a fault while obtaining a stack
trace. This triggered the sig_on_uaccess_error recursive fault logic
and killed the process dead.

Fix this by explicitly excluding interrupts from the recursive fault
logic.

Reported-and-Tested-by: Waiman Long <waiman.long@hp.com>
Fixes: e00b12e64b ("perf/x86: Further optimize copy_from_user_nmi()")
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Cc: Scott J Norton <scott.norton@hp.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20140110200603.GJ7572@laptop.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-01-16 09:19:48 +01:00
..
kmemcheck
amdtopology.c
dump_pagetables.c
extable.c
fault.c x86, mm, perf: Allow recursive faults from interrupts 2014-01-16 09:19:48 +01:00
gup.c mm: numa: serialise parallel get_user_page against THP migration 2013-12-18 19:04:50 -08:00
highmem_32.c mm: accurately calculate zone->managed_pages for highmem zones 2013-07-03 16:07:33 -07:00
hugetlbpage.c mm: migrate: check movability of hugepage in unmap_and_move_huge_page() 2013-09-11 15:57:49 -07:00
init_32.c mm/x86: prepare for removing num_physpages and simplify mem_init() 2013-07-03 16:07:38 -07:00
init_64.c mm/x86: prepare for removing num_physpages and simplify mem_init() 2013-07-03 16:07:38 -07:00
init.c arch/x86/mm/init.c: fix incorrect function name in alloc_low_pages() 2013-11-13 12:09:11 +09:00
iomap_32.c
ioremap.c mm: Remove unused variable idx0 in __early_ioremap() 2013-08-13 11:46:36 +02:00
kmmio.c
Makefile x86, trace: Add page fault tracepoints 2013-11-08 14:15:49 -08:00
memtest.c
mm_internal.h
mmap.c x86 get_unmapped_area: Access mmap_legacy_base through mm_struct member 2013-08-22 10:19:35 -07:00
mmio-mod.c x86: delete __cpuinit usage from all x86 files 2013-07-14 19:36:56 -04:00
numa_32.c mm/x86: prepare for removing num_physpages and simplify mem_init() 2013-07-03 16:07:38 -07:00
numa_64.c
numa_emulation.c x86: delete __cpuinit usage from all x86 files 2013-07-14 19:36:56 -04:00
numa_internal.h
numa.c mem-hotplug: introduce movable_node boot option 2013-11-13 12:09:09 +09:00
pageattr-test.c x86: rename random32() to prandom_u32() 2013-04-29 18:28:42 -07:00
pageattr.c Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2013-04-30 08:40:35 -07:00
pat_internal.h
pat_rbtree.c
pat.c
pf_in.c
pf_in.h
pgtable_32.c
pgtable.c x86, mm: do not leak page->ptl for pmd page tables 2013-11-21 16:42:28 -08:00
physaddr.c
physaddr.h
setup_nx.c x86: delete __cpuinit usage from all x86 files 2013-07-14 19:36:56 -04:00
srat.c ACPI / x86: Print Hot-Pluggable Field in SRAT. 2013-08-14 23:24:01 +02:00
testmmiotrace.c
tlb.c mm: vmstats: track TLB flush stats on UP too 2013-09-11 15:57:09 -07:00