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[98.147.7.212]) by smtp.gmail.com with ESMTPSA id n4-20020a170903110400b001e45c0d6ce6sm1825290plh.306.2024.04.08.17.34.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 Apr 2024 17:34:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1712622855; x=1713227655; darn=nongnu.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=cKLjKBRBJQg84oS4OLgjoE2usIG97HzuqeLjYhoFQH8=; b=H+9ieD/kYmb6ZJjDsM2D0jwCS16wqRjnXJxb/WQjdC/n2qvOFpAzZJbvuNyPEA2frS aKgKfAqZ3+rmTp9bnOu07VMqbgEEHnzV+C48UF8BB7cPWWVrFnKSAAUlsr0VEqoO8kBV Jc/GjqypIWNW2fa8Iwbjnwx2ANaXr7P3Op8EmMRiA55gWovihCc9H0+Nti8tKoCNbNtZ sXLricp/VGlurqO7oH6i80JQFzqmTM3cmehobflJEan5f6EZ7i4ufKYbuHJTKif8N1e+ cRjKpieIlfCaouGdtKMOjPqt6aJHP9DsdZmzz969KyPFfBl4DP7SygKK6AQggwSt6EFv WyKw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1712622855; x=1713227655; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=cKLjKBRBJQg84oS4OLgjoE2usIG97HzuqeLjYhoFQH8=; b=EbKEgKY4FG5Nw6ftaigQQCQxY0ebjX8LVnb/7G1ZM6Bax3ooVADNBbw+4bsNGb1Oi4 P8BPR5W9z9lOMCeuciGSMLRxmjlqmT3g6pIxhXk0CI99c+Q+NQNOD4O/hLalUKfY8kk5 yAYsxRapOTWZE2tkvnjN8bcZqDHLEulQFjnRN6dTXCtLL/7L+4vTVfd26RzjFFcCLma2 3mHPuyFCr9hyffNto5Vrx8ZVoUZL8t1QHD6ZqFB/4tbdouSffzNeKrv+/YxU1uGqbZ39 9y0L/szkSj13fEVciZwNxWdTHOXtJUP3SIJzgkm5rQzXfXmxgS1Mhw0mCvrsxBtGLjeK Hmgw== X-Gm-Message-State: AOJu0YzED/e2k/5UuAD2El8VxReuc01575LsGElLGuYI4eTxX3MpwreE uUhqcAlHuZWkIzW9BYGPpiljsKEeSdyZIaAvXGy9RamvUjxGF4sfqayDj2WtyFPxY0ZJRgpWOW+ u X-Google-Smtp-Source: AGHT+IEi8c0i+MpulrDRBNFkgIaf997IIbwvbQJCJFXbuZX1tSX9R30s/QW5Wpo1Y3qFKZ6/zsxcaA== X-Received: by 2002:a17:902:f64a:b0:1e3:e1c4:eaf3 with SMTP id m10-20020a170902f64a00b001e3e1c4eaf3mr6479306plg.43.1712622855088; Mon, 08 Apr 2024 17:34:15 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: gustavo.romero@linaro.org Subject: [PATCH for-9.0] linux-user: Preserve unswapped siginfo_t for strace Date: Mon, 8 Apr 2024 14:34:11 -1000 Message-Id: <20240409003411.1452196-1-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::62c; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62c.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1712622975237100001 Content-Type: text/plain; charset="utf-8" Passing the tswapped structure to strace means that our internal si_type is also gone, which then aborts in print_siginfo. Fixes: 4d6d8a05a0a ("linux-user: Move tswap_siginfo out of target code") Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- linux-user/signal.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/linux-user/signal.c b/linux-user/signal.c index a93148a4cb..05dc4afb52 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -1173,6 +1173,7 @@ static void handle_pending_signal(CPUArchState *cpu_e= nv, int sig, CPUState *cpu =3D env_cpu(cpu_env); abi_ulong handler; sigset_t set; + target_siginfo_t unswapped; target_sigset_t target_old_set; struct target_sigaction *sa; TaskState *ts =3D get_task_state(cpu); @@ -1182,9 +1183,14 @@ static void handle_pending_signal(CPUArchState *cpu_= env, int sig, k->pending =3D 0; =20 /* - * Writes out siginfo values byteswapped, accordingly to the target. I= t also - * cleans the si_type from si_code making it correct for the target. + * Writes out siginfo values byteswapped, accordingly to the target. + * It also cleans the si_type from si_code making it correct for + * the target. We must hold on to the original unswapped copy for + * strace below, because si_type is still required there. */ + if (unlikely(qemu_loglevel_mask(LOG_STRACE))) { + unswapped =3D k->info; + } tswap_siginfo(&k->info, &k->info); =20 sig =3D gdb_handlesig(cpu, sig, NULL, &k->info, sizeof(k->info)); @@ -1197,7 +1203,7 @@ static void handle_pending_signal(CPUArchState *cpu_e= nv, int sig, } =20 if (unlikely(qemu_loglevel_mask(LOG_STRACE))) { - print_taken_signal(sig, &k->info); + print_taken_signal(sig, &unswapped); } =20 if (handler =3D=3D TARGET_SIG_DFL) { --=20 2.34.1