Hello, On 19/11/15 14:51, Ian Campbell wrote: > Following on from IRC conversation regarding an issue similar to [0] (which > was reported by someone else). > > I've implemented the missing hypercall support in valgrind, see attached > which applies to SVN r15732. This is migrating cleanly (i.e. no > "README_MISSING_SYSCALL_OR_IOCTL" spew) for me with the attached > suppression file which knocks out one known (benign) issue.
I applied this patch to unstable's valgrind, and have now performed a migration in both directions (see attached). > With this things appear pretty clean using the Jessie packages for > everything. Just a few k lost or remaining reachable at the end (see > attached logs). Can I suggest you try the kernel from jessie-backports? That's what I'm using; I have kernel 4.2.0 (I needed this because 3.6 from jessie doesn't support some of my hardware when running Xen). This is a 1G guest again, and you'll see that receiving version gets through over 4G. Regards, Matthew
==17035== Memcheck, a memory error detector ==17035== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al. ==17035== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info ==17035== Command: /usr/lib/xen-4.4/bin/libxl-save-helper.orig --restore-domain 6 9 1 0 2 0 0 1 0 1 0 0 ==17035== Parent PID: 17034 ==17035== ==17035== Warning: set address range perms: large range [0x395dc040, 0x795dc040) (defined) ==17035== Warning: set address range perms: large range [0x795dd040, 0xb95dd040) (defined) ==17035== Warning: set address range perms: large range [0xb95de040, 0xf93de040) (undefined) ==17035== Warning: set address range perms: large range [0xf93df000, 0x1393df000) (defined) ==17035== Warning: set address range perms: large range [0xf93df000, 0x1393df000) (noaccess) ==17035== Warning: set address range perms: large range [0x395dc028, 0x795dc058) (noaccess) ==17035== Warning: set address range perms: large range [0x795dd028, 0xb95dd058) (noaccess) ==17035== Warning: set address range perms: large range [0xb95de028, 0xf93de058) (noaccess) ==17035== ==17035== HEAP SUMMARY: ==17035== in use at exit: 2,098,392 bytes in 4 blocks ==17035== total heap usage: 2,822 allocs, 2,818 frees, 4,342,797,896 bytes allocated ==17035== ==17035== 8 bytes in 1 blocks are definitely lost in loss record 1 of 4 ==17035== at 0x4C28CA0: malloc (vg_replace_malloc.c:299) ==17035== by 0x4C2B04F: realloc (vg_replace_malloc.c:785) ==17035== by 0x5064405: ??? (in /usr/lib/x86_64-linux-gnu/libxenguest-4.4.so) ==17035== by 0x5063E02: ??? (in /usr/lib/x86_64-linux-gnu/libxenguest-4.4.so) ==17035== by 0x5065ADB: xc_domain_restore (in /usr/lib/x86_64-linux-gnu/libxenguest-4.4.so) ==17035== by 0x4014AF: ??? (in /usr/lib/xen-4.4/bin/libxl-save-helper.orig) ==17035== by 0x54C6B44: (below main) (libc-start.c:287) ==17035== ==17035== 24 bytes in 1 blocks are still reachable in loss record 2 of 4 ==17035== at 0x4C28CA0: malloc (vg_replace_malloc.c:299) ==17035== by 0x401774: ??? (in /usr/lib/xen-4.4/bin/libxl-save-helper.orig) ==17035== by 0x401456: ??? (in /usr/lib/xen-4.4/bin/libxl-save-helper.orig) ==17035== by 0x54C6B44: (below main) (libc-start.c:287) ==17035== ==17035== 1,208 bytes in 1 blocks are still reachable in loss record 3 of 4 ==17035== at 0x4C28CA0: malloc (vg_replace_malloc.c:299) ==17035== by 0x4E4A08A: ??? (in /usr/lib/x86_64-linux-gnu/libxenctrl-4.4.so) ==17035== by 0x4017CC: ??? (in /usr/lib/xen-4.4/bin/libxl-save-helper.orig) ==17035== by 0x401456: ??? (in /usr/lib/xen-4.4/bin/libxl-save-helper.orig) ==17035== by 0x54C6B44: (below main) (libc-start.c:287) ==17035== ==17035== 2,097,152 bytes in 1 blocks are definitely lost in loss record 4 of 4 ==17035== at 0x4C28CA0: malloc (vg_replace_malloc.c:299) ==17035== by 0x5065806: xc_domain_restore (in /usr/lib/x86_64-linux-gnu/libxenguest-4.4.so) ==17035== by 0x4014AF: ??? (in /usr/lib/xen-4.4/bin/libxl-save-helper.orig) ==17035== by 0x54C6B44: (below main) (libc-start.c:287) ==17035== ==17035== LEAK SUMMARY: ==17035== definitely lost: 2,097,160 bytes in 2 blocks ==17035== indirectly lost: 0 bytes in 0 blocks ==17035== possibly lost: 0 bytes in 0 blocks ==17035== still reachable: 1,232 bytes in 2 blocks ==17035== suppressed: 0 bytes in 0 blocks ==17035== ==17035== For counts of detected and suppressed errors, rerun with: -v ==17035== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 0 from 0)
==6331== Memcheck, a memory error detector ==6331== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al. ==6331== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info ==6331== Command: /usr/lib/xen-4.4/bin/libxl-save-helper.orig --save-domain 8 9 0 0 1 0 0 12 8 72 ==6331== Parent PID: 6330 ==6331== ==6331== Warning: set address range perms: large range [0xa292000, 0x2a692000) (defined) ==6331== Warning: set address range perms: large range [0x395dc000, 0x795dc000) (defined) ==6331== Warning: set address range perms: large range [0x395dc000, 0x795dc000) (noaccess) ==6331== Warning: set address range perms: large range [0xa292000, 0x2a692000) (noaccess) ==6331== ==6331== HEAP SUMMARY: ==6331== in use at exit: 1,232 bytes in 2 blocks ==6331== total heap usage: 697 allocs, 695 frees, 38,370,651 bytes allocated ==6331== ==6331== 24 bytes in 1 blocks are still reachable in loss record 1 of 2 ==6331== at 0x4C28CA0: malloc (vg_replace_malloc.c:299) ==6331== by 0x401774: ??? (in /usr/lib/xen-4.4/bin/libxl-save-helper.orig) ==6331== by 0x40128C: ??? (in /usr/lib/xen-4.4/bin/libxl-save-helper.orig) ==6331== by 0x54C6B44: (below main) (libc-start.c:287) ==6331== ==6331== 1,208 bytes in 1 blocks are still reachable in loss record 2 of 2 ==6331== at 0x4C28CA0: malloc (vg_replace_malloc.c:299) ==6331== by 0x4E4A08A: ??? (in /usr/lib/x86_64-linux-gnu/libxenctrl-4.4.so) ==6331== by 0x4017CC: ??? (in /usr/lib/xen-4.4/bin/libxl-save-helper.orig) ==6331== by 0x40128C: ??? (in /usr/lib/xen-4.4/bin/libxl-save-helper.orig) ==6331== by 0x54C6B44: (below main) (libc-start.c:287) ==6331== ==6331== LEAK SUMMARY: ==6331== definitely lost: 0 bytes in 0 blocks ==6331== indirectly lost: 0 bytes in 0 blocks ==6331== possibly lost: 0 bytes in 0 blocks ==6331== still reachable: 1,232 bytes in 2 blocks ==6331== suppressed: 0 bytes in 0 blocks ==6331== ==6331== For counts of detected and suppressed errors, rerun with: -v ==6331== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 1 from 1)
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