{"id":2222773,"url":"http://patchwork.ozlabs.org/api/patches/2222773/?format=json","web_url":"http://patchwork.ozlabs.org/project/ltp/patch/20260413155730.fnnhbyzqmmrxgfur@lida.tpb.lab.eng.brq.redhat.com/","project":{"id":59,"url":"http://patchwork.ozlabs.org/api/projects/59/?format=json","name":"Linux Test Project development","link_name":"ltp","list_id":"ltp.lists.linux.it","list_email":"ltp@lists.linux.it","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260413155730.fnnhbyzqmmrxgfur@lida.tpb.lab.eng.brq.redhat.com>","list_archive_url":null,"date":"2026-04-13T15:57:30","name":"Syscall param clock_settime(tp) points to uninitialised byte(s)","commit_ref":null,"pull_url":null,"state":"accepted","archived":false,"hash":"aae04bf070b1b9744999478c807aeed3dab0b9cb","submitter":{"id":88822,"url":"http://patchwork.ozlabs.org/api/people/88822/?format=json","name":"Martin Cermak","email":"mcermak@redhat.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/ltp/patch/20260413155730.fnnhbyzqmmrxgfur@lida.tpb.lab.eng.brq.redhat.com/mbox/","series":[{"id":499725,"url":"http://patchwork.ozlabs.org/api/series/499725/?format=json","web_url":"http://patchwork.ozlabs.org/project/ltp/list/?series=499725","date":"2026-04-13T15:57:30","name":"Syscall param clock_settime(tp) points to uninitialised byte(s)","version":1,"mbox":"http://patchwork.ozlabs.org/series/499725/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2222773/comments/","check":"fail","checks":"http://patchwork.ozlabs.org/api/patches/2222773/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","ltp@lists.linux.it"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","ltp@picard.linux.it"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=lists.linux.it header.i=@lists.linux.it\n header.a=rsa-sha256 header.s=picard header.b=B3crLU2q;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=IuKDnXyN;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.linux.it\n (client-ip=213.254.12.146; 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boundary=\"lbb252ntq2nnxcsn\"","Content-Disposition":"inline","X-Spam-Status":"No, score=0.1 required=7.0 tests=DKIM_SIGNED,DKIM_VALID,\n DKIM_VALID_AU,DKIM_VALID_EF,DMARC_PASS,SPF_HELO_PASS,SPF_PASS\n shortcircuit=no autolearn=disabled version=4.0.1","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on in-2.smtp.seeweb.it","X-Virus-Scanned":"clamav-milter 1.0.9 at in-2.smtp.seeweb.it","X-Virus-Status":"Clean","Subject":"[LTP] Syscall param clock_settime(tp) points to uninitialised\n byte(s)","X-BeenThere":"ltp@lists.linux.it","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"Linux Test Project ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","From":"Martin Cermak via ltp ","Reply-To":"Martin Cermak ","Errors-To":"ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it","Sender":"\"ltp\" "},"content":"Hello there,\n\none LTP nit attached.\n\nCheers,\nm.\nFrom 1acc76579c81b37814b0111044e1a1f8282cfbfb Mon Sep 17 00:00:00 2001\nFrom: Martin Cermak \nDate: Mon, 13 Apr 2026 17:48:43 +0200\nSubject: [PATCH] Avoid Syscall param clock_settime(tp) points to uninitialised\n byte(s)\n\nWithout this update, clock_settime03 fails under valgrind with an error like the following:\n\nel10 x86_64 # ./vg-in-place --track-origins=yes ./auxprogs/auxchecks/ltp-full-20260130/testcases/kernel/syscalls/clock_settime/clock_settime03\n==1638250== Memcheck, a memory error detector\n==1638250== Copyright (C) 2002-2024, and GNU GPL'd, by Julian Seward et al.\n==1638250== Using Valgrind-3.27.0.GIT and LibVEX; rerun with -h for copyright info\n==1638250== Command: ./auxprogs/auxchecks/ltp-full-20260130/testcases/kernel/syscalls/clock_settime/clock_settime03\n==1638250==\ntst_test.c:2047: TINFO: LTP version: 20260130\ntst_test.c:2050: TINFO: Tested kernel: 6.12.0-218.el10.x86_64 #1 SMP PREEMPT_DYNAMIC Tue Mar 31 08:07:36 EDT 2026 x86_64\ntst_kconfig.c:88: TINFO: Parsing kernel config '/lib/modules/6.12.0-218.el10.x86_64/build/.config'\ntst_test.c:1875: TINFO: Overall timeout per run is 0h 00m 34s\nclock_settime03.c:35: TINFO: Testing variant: syscall with old kernel spec\nclock_settime03.c:103: TPASS: clock_settime(): Y2038 test passed\n==1638252==\n==1638252== HEAP SUMMARY:\n==1638252== in use at exit: 0 bytes in 0 blocks\n==1638252== total heap usage: 17 allocs, 17 frees, 13,761 bytes allocated\n==1638252==\n==1638252== All heap blocks were freed -- no leaks are possible\n==1638252==\n==1638252== For lists of detected and suppressed errors, rerun with: -s\n==1638252== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)\n\nSummary:\npassed 1\nfailed 0\nbroken 0\nskipped 0\nwarnings 0\n==1638250== Syscall param clock_settime(tp) points to uninitialised byte(s)\n==1638250== at 0x496215D: syscall (in /usr/lib64/libc.so.6)\n==1638250== by 0x416780: syscall_supported_by_kernel (tst_clocks.c:24)\n==1638250== by 0x416780: tst_clock_settime (tst_clocks.c:104)\n==1638250== by 0x40DB67: tst_wallclock_restore (tst_wallclock.c:63)\n==1638250== by 0x407E06: do_cleanup (tst_test.c:1671)\n==1638250== by 0x407E06: do_exit (tst_test.c:1054)\n==1638250== by 0x40B280: run_tcases_per_fs (tst_test.c:2025)\n==1638250== by 0x40B280: tst_run_tcases (tst_test.c:2065)\n==1638250== by 0x404D8D: main (tst_test.h:755)\n==1638250== Address 0x1ffefffbe0 is on thread 1's stack\n==1638250== in frame #1, created by tst_clock_settime (tst_clocks.c:92)\n==1638250== Uninitialised value was created by a stack allocation\n==1638250== at 0x416710: tst_clock_settime (tst_clocks.c:92)\n==1638250==\n==1638250==\n==1638250== HEAP SUMMARY:\n==1638250== in use at exit: 0 bytes in 0 blocks\n==1638250== total heap usage: 10 allocs, 10 frees, 10,552 bytes allocated\n==1638250==\n==1638250== All heap blocks were freed -- no leaks are possible\n==1638250==\n==1638250== For lists of detected and suppressed errors, rerun with: -s\n==1638250== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)\nel10 x86_64 #\n---\n lib/tst_clocks.c | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)","diff":"diff --git a/lib/tst_clocks.c b/lib/tst_clocks.c\nindex 704ce9551..107938e4e 100644\n--- a/lib/tst_clocks.c\n+++ b/lib/tst_clocks.c\n@@ -19,7 +19,7 @@ typedef int (*mysyscall)(clockid_t clk_id, void *ts);\n int syscall_supported_by_kernel(long sysnr)\n {\n \tint ret;\n-\tstruct __kernel_timespec foo;\n+\tstruct __kernel_timespec foo = { 0, };\n \n \tret = syscall(sysnr, 0, &foo);\n \tif (ret == -1 && errno == ENOSYS)\n","prefixes":[]}