From: Tiezhu Yang <yangtiezhu@loongson.cn> To: Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu> Cc: Guo Ren <guoren@kernel.org>, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, loongson-kernel@lists.loongnix.cn Subject: [PATCH] riscv: uprobes: Restore thread.bad_cause Date: Sun, 23 Apr 2023 09:42:26 +0800 [thread overview] Message-ID: <1682214146-3756-1-git-send-email-yangtiezhu@loongson.cn> (raw) thread.bad_cause is saved in arch_uprobe_pre_xol(), it should be restored in arch_uprobe_{post,abort}_xol() accordingly, otherwise the save operation is meaningless, this change is similar with x86 and powerpc. Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> --- arch/riscv/kernel/probes/uprobes.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/riscv/kernel/probes/uprobes.c b/arch/riscv/kernel/probes/uprobes.c index c976a21..194f166 100644 --- a/arch/riscv/kernel/probes/uprobes.c +++ b/arch/riscv/kernel/probes/uprobes.c @@ -67,6 +67,7 @@ int arch_uprobe_post_xol(struct arch_uprobe *auprobe, struct pt_regs *regs) struct uprobe_task *utask = current->utask; WARN_ON_ONCE(current->thread.bad_cause != UPROBE_TRAP_NR); + current->thread.bad_cause = utask->autask.saved_cause; instruction_pointer_set(regs, utask->vaddr + auprobe->insn_size); @@ -102,6 +103,7 @@ void arch_uprobe_abort_xol(struct arch_uprobe *auprobe, struct pt_regs *regs) { struct uprobe_task *utask = current->utask; + current->thread.bad_cause = utask->autask.saved_cause; /* * Task has received a fatal signal, so reset back to probbed * address. -- 2.1.0
WARNING: multiple messages have this Message-ID (diff)
From: Tiezhu Yang <yangtiezhu@loongson.cn> To: Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu> Cc: Guo Ren <guoren@kernel.org>, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, loongson-kernel@lists.loongnix.cn Subject: [PATCH] riscv: uprobes: Restore thread.bad_cause Date: Sun, 23 Apr 2023 09:42:26 +0800 [thread overview] Message-ID: <1682214146-3756-1-git-send-email-yangtiezhu@loongson.cn> (raw) thread.bad_cause is saved in arch_uprobe_pre_xol(), it should be restored in arch_uprobe_{post,abort}_xol() accordingly, otherwise the save operation is meaningless, this change is similar with x86 and powerpc. Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> --- arch/riscv/kernel/probes/uprobes.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/riscv/kernel/probes/uprobes.c b/arch/riscv/kernel/probes/uprobes.c index c976a21..194f166 100644 --- a/arch/riscv/kernel/probes/uprobes.c +++ b/arch/riscv/kernel/probes/uprobes.c @@ -67,6 +67,7 @@ int arch_uprobe_post_xol(struct arch_uprobe *auprobe, struct pt_regs *regs) struct uprobe_task *utask = current->utask; WARN_ON_ONCE(current->thread.bad_cause != UPROBE_TRAP_NR); + current->thread.bad_cause = utask->autask.saved_cause; instruction_pointer_set(regs, utask->vaddr + auprobe->insn_size); @@ -102,6 +103,7 @@ void arch_uprobe_abort_xol(struct arch_uprobe *auprobe, struct pt_regs *regs) { struct uprobe_task *utask = current->utask; + current->thread.bad_cause = utask->autask.saved_cause; /* * Task has received a fatal signal, so reset back to probbed * address. -- 2.1.0 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv
next reply other threads:[~2023-04-23 1:42 UTC|newest] Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-04-23 1:42 Tiezhu Yang [this message] 2023-04-23 1:42 ` [PATCH] riscv: uprobes: Restore thread.bad_cause Tiezhu Yang 2023-04-24 11:49 ` Tiezhu Yang 2023-04-24 11:49 ` Tiezhu Yang 2023-04-24 15:28 ` Oleg Nesterov 2023-04-24 15:28 ` Oleg Nesterov 2023-05-05 10:01 ` Guo Ren 2023-05-05 10:01 ` Guo Ren 2023-06-15 15:30 ` Tiezhu Yang 2023-06-15 15:30 ` Tiezhu Yang 2023-06-20 19:27 ` Palmer Dabbelt 2023-06-20 19:27 ` Palmer Dabbelt 2023-06-20 19:40 ` patchwork-bot+linux-riscv 2023-06-20 19:40 ` patchwork-bot+linux-riscv
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=1682214146-3756-1-git-send-email-yangtiezhu@loongson.cn \ --to=yangtiezhu@loongson.cn \ --cc=aou@eecs.berkeley.edu \ --cc=guoren@kernel.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-riscv@lists.infradead.org \ --cc=loongson-kernel@lists.loongnix.cn \ --cc=palmer@dabbelt.com \ --cc=paul.walmsley@sifive.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.