Bug 46213
| Summary: | Installer hangs when specify | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | Shinya Narahara <naraha_s> |
| Component: | kernel | Assignee: | Arjan van de Ven <arjanv> |
| Status: | CLOSED RAWHIDE | QA Contact: | Brock Organ <borgan> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 7.1 | CC: | bhuang, ynakai |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | ia64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2001-07-24 06:12:10 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
On my investigation, the cause is that:
(1) When 'mem=xxx' is used, it is possible that the page corresponds to
the memory used by initrd is not made because initrd is loaded into
high address region by bootloader.
(2) free_initrd_mem() frees the memory used by initrd even if its
corresponding page was not exist.
The following is the patch I sent this to linux kernel ML.
I saw the kernel applied this patch boots normally with 'mem=512m' on Bigsur
with 1GB memory.
--- ./arch/ia64/mm/init.c Thu Jun 28 10:16:45 2001
+++ ./arch/ia64/mm/init.c.new Thu Jun 28 09:57:58 2001
@@ -141,10 +141,12 @@
printk ("Freeing initrd memory: %ldkB freed\n", (end - start) >>
10);
for (; start < end; start += PAGE_SIZE) {
- clear_bit(PG_reserved, &virt_to_page(start)->flags);
- set_page_count(virt_to_page(start), 1);
- free_page(start);
- ++totalram_pages;
+ if (VALID_PAGE(virt_to_page(start))) {
+ clear_bit(PG_reserved, &virt_to_page(start)->flags);
+ set_page_count(virt_to_page(start), 1);
+ free_page(start);
+ ++totalram_pages;
+ }
}
}
This issue has been fixed already, kernel-2.4.9 or above. |
From Bugzilla Helper: User-Agent: Mozilla/4.75 [ja] (WinNT; U) Description of problem: IA-64 Installer, the kernel 2.4.3-12, may have a memory bug. How reproducible: Always Steps to Reproduce: 1. Boot IA-64 machine. 2. Insert redhat 7.1 Installation CD-ROM. 3. input string below, on the EFI shell. elilo linux mem=512m Actual Results: Kernel panic happens between kernel booting. The message is below: ... Freeing initrd memory: 692kB freed kernel BUG at page_alloc.c:86! Expected Results: normal boot. Additional info: We saw this on the machines IA-64 2way, 4way and 8way. We suppose this is caused by the kernel patch linux-2.4.2-vmpoisone.patch. If we can't specify the kernel parameter "mem=", it will be kernel panic between installation of redhat Linux for IA-64 on the machine which has much memory(ex. 8Gbyte), because of the lack of the SWIOTLB buffer(DMA buffer). We think this may be avoided by using an another kernel parameter "swiotlb=16384", 256Mbyte, however very doubtful.