The patch titled
Subject: x86/fault: dump command line of faulting process to syslog
has been added to the -mm mm-nonmm-unstable branch. Its filename is
x86-fault-dump-command-line-of-faulting-process-to-syslog.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/x86-fault-dump-command-line-of-faulting-process-to-syslog.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Helge Deller <deller@xxxxxx>
Subject: x86/fault: dump command line of faulting process to syslog
Date: Mon, 8 Aug 2022 15:09:16 +0200
If a process segfaults, include the command line of the faulting process
in the syslog.
In the example below, the "crash" program (which simply writes zero to
address 0) was called with the parameters "this is a test":
crash[2326]: segfault at 0 ip 0000561a7969c12e sp 00007ffe97a05630 error = 6 in crash[561a7969c000+1000]
crash[2326] cmdline: ./crash this is a test
Code: 68 ff ff ff c6 05 19 2f 00 00 01 5d c3 0f 1f 80 00 00 00 00 c3 0f 1f ...
Link: https://lkml.kernel.org/r/20220808130917.30760-4-deller@xxxxxx
Signed-off-by: Helge Deller <deller@xxxxxx>
Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Cc: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/mm/fault.c | 2 ++
1 file changed, 2 insertions(+)
--- a/arch/x86/mm/fault.c~x86-fault-dump-command-line-of-faulting-process-to-syslog
+++ a/arch/x86/mm/fault.c
@@ -784,6 +784,8 @@ show_signal_msg(struct pt_regs *regs, un
printk(KERN_CONT "\n");
+ dump_stack_print_cmdline(loglvl);
+
show_opcodes(regs, loglvl);
}
_
Patches currently in -mm which might be from deller@xxxxxx are
proc-add-get_task_cmdline_kernel-function.patch
lib-dump_stack-add-dump_stack_print_cmdline-and-wire-up-in-dump_stack_print_info.patch
x86-fault-dump-command-line-of-faulting-process-to-syslog.patch
arc-use-generic-dump_stack_print_cmdline-implementation.patch
