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From: Mark W. <ma...@so...> - 2020-01-15 17:15:51
|
https://sourceware.org/git/gitweb.cgi?p=valgrind.git;h=6f9a8d619d2276c416d982cbd2cfb3cb84c50a43 commit 6f9a8d619d2276c416d982cbd2cfb3cb84c50a43 Author: Mark Wielaard <ma...@kl...> Date: Wed Jan 15 17:43:15 2020 +0100 priv/guest_generic_bb_to_IR.c stmt_is_guardable(): Add Ist_Dirty. This might happen when the source contains something like if (something_involving_pcmpxstrx && foo) { .. } which might use amd64g_dirtyhelper_PCMPxSTRx. Diff: --- VEX/priv/guest_generic_bb_to_IR.c | 1 + 1 file changed, 1 insertion(+) diff --git a/VEX/priv/guest_generic_bb_to_IR.c b/VEX/priv/guest_generic_bb_to_IR.c index 507c75e..6361725 100644 --- a/VEX/priv/guest_generic_bb_to_IR.c +++ b/VEX/priv/guest_generic_bb_to_IR.c @@ -462,6 +462,7 @@ static Bool stmt_is_guardable ( const IRStmt* st ) case Ist_Store: case Ist_StoreG: case Ist_Exit: + case Ist_Dirty: return False; // This is probably guardable, but it depends on the RHS of the // assignment. |
|
From: Mark W. <ma...@so...> - 2020-01-15 15:04:18
|
https://sourceware.org/git/gitweb.cgi?p=valgrind.git;h=58fc707804b9c1db66124737f5dcbb2715b230e1 commit 58fc707804b9c1db66124737f5dcbb2715b230e1 Author: Alexandra Hájková <aha...@re...> Date: Mon Jan 13 12:29:55 2020 -0500 syswrap-linux.c: fix clock_adjtime handling Not checking whether valgrind can dereference timex pointer casues VALGRIND INTERNAL ERROR while handling clock_adjtime. Diff: --- coregrind/m_syswrap/syswrap-linux.c | 38 ++++++++++++++++++++----------------- 1 file changed, 21 insertions(+), 17 deletions(-) diff --git a/coregrind/m_syswrap/syswrap-linux.c b/coregrind/m_syswrap/syswrap-linux.c index 25d9a95..d04a081 100644 --- a/coregrind/m_syswrap/syswrap-linux.c +++ b/coregrind/m_syswrap/syswrap-linux.c @@ -1291,24 +1291,28 @@ PRE(sys_clock_adjtime) PRE_REG_READ2(long, "clock_adjtime", vki_clockid_t, id, struct timex *, buf); PRE_MEM_READ( "clock_adjtime(timex->modes)", ARG2, sizeof(tx->modes)); -#define ADJX(bits,field) \ - if (tx->modes & (bits)) \ - PRE_MEM_READ( "clock_adjtime(timex->"#field")", \ - (Addr)&tx->field, sizeof(tx->field)) - - if (tx->modes & VKI_ADJ_ADJTIME) { - if (!(tx->modes & VKI_ADJ_OFFSET_READONLY)) - PRE_MEM_READ( "clock_adjtime(timex->offset)", (Addr)&tx->offset, sizeof(tx->offset)); - } else { - ADJX(VKI_ADJ_OFFSET, offset); - ADJX(VKI_ADJ_FREQUENCY, freq); - ADJX(VKI_ADJ_MAXERROR, maxerror); - ADJX(VKI_ADJ_ESTERROR, esterror); - ADJX(VKI_ADJ_STATUS, status); - ADJX(VKI_ADJ_TIMECONST|VKI_ADJ_TAI, constant); - ADJX(VKI_ADJ_TICK, tick); - } + if (ML_(safe_to_deref) (tx, sizeof(struct vki_timex))) { + PRE_MEM_READ( "clock_adjtime(timex->modes)", ARG2, sizeof(tx->modes)); + +#define ADJX(bits,field) \ + if (tx->modes & (bits)) \ + PRE_MEM_READ( "clock_adjtime(timex->"#field")", \ + (Addr)&tx->field, sizeof(tx->field)) + + if (tx->modes & VKI_ADJ_ADJTIME) { + if (!(tx->modes & VKI_ADJ_OFFSET_READONLY)) + PRE_MEM_READ( "clock_adjtime(timex->offset)", (Addr)&tx->offset, sizeof(tx->offset)); + } else { + ADJX(VKI_ADJ_OFFSET, offset); + ADJX(VKI_ADJ_FREQUENCY, freq); + ADJX(VKI_ADJ_MAXERROR, maxerror); + ADJX(VKI_ADJ_ESTERROR, esterror); + ADJX(VKI_ADJ_STATUS, status); + ADJX(VKI_ADJ_TIMECONST|VKI_ADJ_TAI, constant); + ADJX(VKI_ADJ_TICK, tick); + } #undef ADJX + } PRE_MEM_WRITE( "adjtimex(timex)", ARG2, sizeof(struct vki_timex)); } |
|
From: Paul F. <pj...@wa...> - 2020-01-15 12:58:29
|
> On 15 Jan 2020, at 13:47, Rhys Kidd <rhy...@gm...> wrote: > > > Try running with ./valgrind -v <$program> and provide what is output. > > Hi Rhys I’ve attached the output. This is with the latest Xcode and macOS versions. |
|
From: Rhys K. <rhy...@gm...> - 2020-01-15 12:47:58
|
On Wed, 15 Jan 2020 at 06:17, Paul Floyd <pj...@wa...> wrote: > Hi > > I’m having quick look at building Valgrind on macOS Catalina > > I’m using this repo > > https://github.com/LouisBrunner/valgrind-macos.git > > Plus I’ve merged in the changes up to head from sourceware. > > After a few mods to configure.ac and a few of the Darwin files it builds > and I get > > ==39161== Lackey, an example Valgrind tool > ==39161== Copyright (C) 2002-2017, and GNU GPL'd, by Nicholas Nethercote. > ==39161== Using Valgrind-3.16.0.GIT and LibVEX; rerun with -h for > copyright info > ==39161== Command: pwd > ==39161== > ==39161== valgrind: Unrecognised instruction at address 0x1006037bd. > > In the past when I’ve seen this sort of thing there was also a vex printf > of the opcodes, but not in this case. > Try running with ./valgrind -v <$program> and provide what is output. > > Any suggestions what to try next? > > A+ > Paul > _______________________________________________ > Valgrind-developers mailing list > Val...@li... > https://lists.sourceforge.net/lists/listinfo/valgrind-developers > |