https://bugs.kde.org/show_bug.cgi?id=524754
Bug ID: 524754
Summary: unhandled instruction: 0xDEFF 0xBB87
Classification: Developer tools
Product: valgrind
Version First 3.27 GIT
Reported In:
Platform: Other
OS: Other
Status: REPORTED
Severity: normal
Priority: NOR
Component: memcheck
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 195475
--> https://bugs.kde.org/attachment.cgi?id=195475&action=edit
strace_log
Dear valgrind,
By using valgrind on eudev ( https://github.com/eudev-project/eudev/tags ) :
valgrind --undef-value-errors=no --main-stacksize=16777216 /usr/sbin/udevd
--daemon
on a target ARM
I have the following :
==1400== Memcheck, a memory error detector
==1400== Copyright (C) 2002-2026, and GNU GPL'd, by Julian Seward et al.
==1400== Using Valgrind-3.27.0 and LibVEX; rerun with -h for copyright info
==1400== Command: /usr/sbin/udevd.ori --daemon
==1400==
[ 15.584128] udevd.ori[1400]: starting version 3.2.14
disInstr(thumb): unhandled instruction: 0xDEFF 0xBB87
[ 16.224565] udevd.ori[1400]: specified group 'tty' unknown
I don't know if the strace log could be useful cf attachment.
rm-unknown-linux-gnueabihf-objdump -d output/release/root_fs/usr/sbin/udevd |
\grep -A 5 -B 5 "deff\|bb87"^
24232: 4648 mov r0, r9
24234: e7dd b.n 241f2 <__udivmoddi4+0x66>
24236: 4613 mov r3, r2
24238: e7f0 b.n 2421c <__udivmoddi4+0x90>
2423a: b902 cbnz r2, 2423e <__udivmoddi4+0xb2>
2423c: deff udf #255 ; 0xff
2423e: bb87 cbnz r7, 242a2 <__udivmoddi4+0x116>
24240: 2101 movs r1, #1
24242: 1a83 subs r3, r0, r2
24244: ea4f 4e15 mov.w lr, r5, lsr #16
24248: fbb3 fcfe udiv ip, r3, lr
Would you have advice ?
Thank you,
Frédéric
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