65 lines
1.7 KiB
Diff
65 lines
1.7 KiB
Diff
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From: Jeff Mahoney <jeffm@suse.com>
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Subject: klogd: Silence System.map and symbol lookup warnings with modern kernels
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References: bnc#505421
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klogd complains about not being able to parse the version of System.map and
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about not being able to load the kernel module symbol table.
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Since kernels starting with 2.5 accurately report their own symbol table in
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Oopses, this is no longer necessary. The warnings are a harmless annoyance,
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but an annoyance nonetheless.
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This patch detects if the running kernel is newer newer than 2.5.0 and
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disables the symbol lookup on startup, thus avoiding the warnings.
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Signed-off-by: Jeff Mahoney <jeffm@suse.com>
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---
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klogd.c | 22 ++++++++++++++++++++++
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1 file changed, 22 insertions(+)
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--- klogd.c
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+++ klogd.c 2009-08-12 12:19:17.333901686 +0000
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@@ -285,6 +285,8 @@ _syscall3(int,ksyslog,int, type, char *,
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#define ksyslog klogctl
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#endif
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+#include <sys/utsname.h>
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+
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#define LOG_BUFFER_SIZE 4096
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#define LOG_LINE_LENGTH 1000
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@@ -1014,6 +1016,23 @@ static void SetBufSize(void)
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}
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}
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+#ifndef KERNEL_VERSION
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+#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
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+#endif
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+
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+static int
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+need_lookup(void)
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+{
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+ struct utsname utsname;
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+ int major, minor, patch;
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+ if (uname(&utsname) < 0) {
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+ Syslog(LOG_ERR, "Cannot get kernel version information.");
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+ return 0;
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+ }
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+ sscanf(utsname.release, "%d.%d.%d", &major, &minor, &patch);
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+
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+ return (KERNEL_VERSION(major, minor, patch) < KERNEL_VERSION(2,5,0));
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+}
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int main(argc, argv)
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@@ -1199,6 +1218,9 @@ int main(argc, argv)
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else
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openlog("kernel", 0, LOG_KERN);
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+ /* We don't need lookups on kernels > 2.4 */
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+ if (symbol_lookup)
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+ symbol_lookup = need_lookup();
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/* Handle one-shot logging. */
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if ( one_shot )
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