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-rw-r--r--lib/plugins/Kerneloops.cpp201
1 files changed, 105 insertions, 96 deletions
diff --git a/lib/plugins/Kerneloops.cpp b/lib/plugins/Kerneloops.cpp
index 379197b2..2ffc2e34 100644
--- a/lib/plugins/Kerneloops.cpp
+++ b/lib/plugins/Kerneloops.cpp
@@ -25,117 +25,126 @@
static unsigned hash_oops_str(const char *oops_ptr)
{
- unsigned char old_c;
- unsigned char c = 0;
- unsigned hash = 0;
+ unsigned char old_c;
+ unsigned char c = 0;
+ unsigned hash = 0;
- /* Special-case: if the first line is of form:
- * WARNING: at net/wireless/core.c:614 wdev_cleanup_work+0xe9/0x120 [cfg80211]() (Not tainted)
- * then hash only "file:line func+ofs/len" part.
- */
- if (strncmp(oops_ptr, "WARNING: at ", sizeof("WARNING: at ")-1) == 0) {
- const char *p = oops_ptr + sizeof("WARNING: at ")-1;
- p = strchr(p, ' '); /* skip filename:NNN */
- if (p) {
- p = strchrnul(p + 1, ' '); /* skip function_name+0xNN/0xNNN */
- oops_ptr += sizeof("WARNING: at ")-1;
- while (oops_ptr < p) {
- c = *oops_ptr++;
- hash = ((hash << 5) ^ (hash >> 27)) ^ c;
- }
- return hash;
- }
- }
+ /* Special-case: if the first line is of form:
+ * WARNING: at net/wireless/core.c:614 wdev_cleanup_work+0xe9/0x120 [cfg80211]() (Not tainted)
+ * then hash only "file:line func+ofs/len" part.
+ */
+ if (strncmp(oops_ptr, "WARNING: at ", sizeof("WARNING: at ")-1) == 0)
+ {
+ const char *p = oops_ptr + sizeof("WARNING: at ")-1;
+ p = strchr(p, ' '); /* skip filename:NNN */
+ if (p)
+ {
+ p = strchrnul(p + 1, ' '); /* skip function_name+0xNN/0xNNN */
+ oops_ptr += sizeof("WARNING: at ")-1;
+ while (oops_ptr < p)
+ {
+ c = *oops_ptr++;
+ hash = ((hash << 5) ^ (hash >> 27)) ^ c;
+ }
+ return hash;
+ }
+ }
- while (1) {
- old_c = c;
- c = *oops_ptr++;
- if (!c)
- break;
- if (c == '\n') {
- // Exclude some lines which have process name - in some oops classes
- // process name is irrelevant and changes with every oops.
- // Lines we filter out:
- // Pid: 8003, comm: Xorg Not tainted (2.6.27.9-159.fc10.i686 #1)
- // Process Xorg (pid: 8003, ti=f0a0c000 task=f2380000 task.ti=f0a0c000)
- if (strncmp(oops_ptr, "Pid: ", 5) == 0
- || strncmp(oops_ptr, "Process ", 8) == 0
- ) {
- while (*oops_ptr && *oops_ptr != '\n')
- oops_ptr++;
- continue;
- }
- }
- if (!isalnum(old_c)) {
- if (c >= '0' && c <= '9') {
- // Convert all (possibly hex) numbers to just one '0'
- if (c == '0' && *oops_ptr == 'x') // "0xSOMETHING"
- oops_ptr++;
- while (isxdigit(*oops_ptr))
- oops_ptr++;
- c = '0';
- } else
- if ((c|0x20) >= 'a' && (c|0x20) <= 'f') {
- // This *may be* a hex number without 0x prefix: "f0a0c000"
- // Check that it indeed is, and replace with '0'
- const char *oops_ptr2 = oops_ptr;
- while (isxdigit(*oops_ptr2))
- oops_ptr2++;
- // Does it end in a letter which is not a hex digit?
- // (Example: "abcw" is not a hex number, "abc " is)
- if (!isalpha(*oops_ptr2)) {
- // It's "abc " case. Skip the "abc" string
- oops_ptr = oops_ptr2;
- c = '0';
- }
- // else: hash the string as-is
- }
- }
- // TODO: Drop call trace tail - in interrupt-driven oopses,
- // everything before interrupt is irrelevant.
- // Example of call trace part of oops:
- // Call Trace:
- // [<f88e11c7>] ? radeon_cp_resume+0x7d/0xbc [radeon]
- // [<f88745f8>] ? drm_ioctl+0x1b0/0x225 [drm]
- // [<f88e114a>] ? radeon_cp_resume+0x0/0xbc [radeon]
- // [<c049b1c0>] ? vfs_ioctl+0x50/0x69
- // [<c049b414>] ? do_vfs_ioctl+0x23b/0x247
- // [<c0460a56>] ? audit_syscall_entry+0xf9/0x123
- // [<c049b460>] ? sys_ioctl+0x40/0x5c
- // [<c0403c76>] ? syscall_call+0x7/0xb
+ while (1)
+ {
+ old_c = c;
+ c = *oops_ptr++;
+ if (!c)
+ break;
+ if (c == '\n')
+ {
+ // Exclude some lines which have process name - in some oops classes
+ // process name is irrelevant and changes with every oops.
+ // Lines we filter out:
+ // Pid: 8003, comm: Xorg Not tainted (2.6.27.9-159.fc10.i686 #1)
+ // Process Xorg (pid: 8003, ti=f0a0c000 task=f2380000 task.ti=f0a0c000)
+ if (strncmp(oops_ptr, "Pid: ", 5) == 0
+ || strncmp(oops_ptr, "Process ", 8) == 0
+ ) {
+ while (*oops_ptr && *oops_ptr != '\n')
+ oops_ptr++;
+ continue;
+ }
+ }
+ if (!isalnum(old_c))
+ {
+ if (c >= '0' && c <= '9')
+ {
+ // Convert all (possibly hex) numbers to just one '0'
+ if (c == '0' && *oops_ptr == 'x') // "0xSOMETHING"
+ oops_ptr++;
+ while (isxdigit(*oops_ptr))
+ oops_ptr++;
+ c = '0';
+ }
+ else if ((c|0x20) >= 'a' && (c|0x20) <= 'f')
+ {
+ // This *may be* a hex number without 0x prefix: "f0a0c000"
+ // Check that it indeed is, and replace with '0'
+ const char *oops_ptr2 = oops_ptr;
+ while (isxdigit(*oops_ptr2))
+ oops_ptr2++;
+ // Does it end in a letter which is not a hex digit?
+ // (Example: "abcw" is not a hex number, "abc " is)
+ if (!isalpha(*oops_ptr2))
+ {
+ // It's "abc " case. Skip the "abc" string
+ oops_ptr = oops_ptr2;
+ c = '0';
+ }
+ // else: hash the string as-is
+ }
+ }
+ // TODO: Drop call trace tail - in interrupt-driven oopses,
+ // everything before interrupt is irrelevant.
+ // Example of call trace part of oops:
+ // Call Trace:
+ // [<f88e11c7>] ? radeon_cp_resume+0x7d/0xbc [radeon]
+ // [<f88745f8>] ? drm_ioctl+0x1b0/0x225 [drm]
+ // [<f88e114a>] ? radeon_cp_resume+0x0/0xbc [radeon]
+ // [<c049b1c0>] ? vfs_ioctl+0x50/0x69
+ // [<c049b414>] ? do_vfs_ioctl+0x23b/0x247
+ // [<c0460a56>] ? audit_syscall_entry+0xf9/0x123
+ // [<c049b460>] ? sys_ioctl+0x40/0x5c
+ // [<c0403c76>] ? syscall_call+0x7/0xb
- /* An algorithm proposed by Donald E. Knuth in The Art Of Computer
- * Programming Volume 3, under the topic of sorting and search
- * chapter 6.4.
- */
- hash = ((hash << 5) ^ (hash >> 27)) ^ c;
- }
- return hash;
+ /* An algorithm proposed by Donald E. Knuth in The Art Of Computer
+ * Programming Volume 3, under the topic of sorting and search
+ * chapter 6.4.
+ */
+ hash = ((hash << 5) ^ (hash >> 27)) ^ c;
+ }
+ return hash;
}
std::string CAnalyzerKerneloops::GetLocalUUID(const char *pDebugDumpDir)
{
- VERB3 log("Getting local universal unique identification");
+ VERB3 log("Getting local universal unique identification");
- std::string oops;
- CDebugDump dd;
- if (!dd.Open(pDebugDumpDir))
- {
- VERB1 log(_("Unable to open debug dump '%s'"), pDebugDumpDir);
- return std::string("");
- }
+ std::string oops;
+ CDebugDump dd;
+ if (!dd.Open(pDebugDumpDir))
+ {
+ VERB1 log(_("Unable to open debug dump '%s'"), pDebugDumpDir);
+ return std::string("");
+ }
- dd.LoadText(FILENAME_BACKTRACE, oops);
+ dd.LoadText(FILENAME_BACKTRACE, oops);
- unsigned hash = hash_oops_str(oops.c_str());
- hash &= 0x7FFFFFFF;
+ unsigned hash = hash_oops_str(oops.c_str());
+ hash &= 0x7FFFFFFF;
- return to_string(hash);
+ return to_string(hash);
}
std::string CAnalyzerKerneloops::GetGlobalUUID(const char *pDebugDumpDir)
{
- return GetLocalUUID(pDebugDumpDir);
+ return GetLocalUUID(pDebugDumpDir);
}
PLUGIN_INFO(ANALYZER,
generated by cgit (git 2.34.1) at 2026-01-11 13:06:37 +0000