https://bugs.kde.org/show_bug.cgi?id=416239
Bug ID: 416239
Summary: valgrind crashes when handling clock_adjtime
Product: valgrind
Version: unspecified
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: jsew...@acm.org
Reporter: ahajk...@redhat.com
Target Milestone: ---
Created attachment 125113
--> https://bugs.kde.org/attachment.cgi?id=125113&action=edit
patch
STEPS TO REPRODUCE
1. clone, compile and install linux test project
(https://github.com/linux-test-project/ltp.git)
2. valgrind -q --trace-children=yes
~/ltp/testcases/kernel/syscalls/clock_adjtime/clock_adjtime02
OBSERVED RESULT
--26535-- VALGRIND INTERNAL ERROR: Valgrind received a signal 11 (SIGSEGV) -
exiting
--26535-- si_code=2; Faulting address: 0x402B000; sp: 0x1002ca9d20
valgrind: the 'impossible' happened:
Killed by fatal signal
valgrind version: valgrind-3.15.0-9
The problem is caused by not checking whether valgrind can dereference timex
pointer.
Proposed patch fixes the issue and makes clock_adjtime02 pass without crashes.
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