Bug 49808
| Summary: | IA-64 Linux is stopped by using commands control EFI mem. | ||
|---|---|---|---|
| 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 | ||
| 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 07:24:25 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: | |||
This is in the 2.4.9 kernel indeed; the fix is correct. |
From Bugzilla Helper: User-Agent: Mozilla/4.75 [ja] (WinNT; U) Description of problem: IA-64 Linux is stopped or dumped core by using commands control EFI mem, with kernel-2.4.3-12. How reproducible: Sometimes Steps to Reproduce: 1.boot the kernel 2.4.3-12 2.execute commands below: # efibootmgr -c -L 'Red Hat Linux' -p 1 # hwclock --systohc 3. Actual Results: Core dump, kernel panic, stop or hungup. Expected Results: works good anytime. Additional info: This problem is related with BIOS(PAL/SAL) version and physical memory size. But this is certainly kernel bug, and we believe this should be fixed. We guess this is not fixed even in 2.4.6-2.4. CPU: IA-64(1 or more) Mem: 2G kernel: 2.4.3-12(smp/nonsmp) Cause: EFI map is below on 2G mem environment. Type Start End # Pages Attributes available 0000000000100000-000000007F932FFF 000000000007F833 0000000000000009 RT_data 000000007F933000-000000007F933FFF 0000000000000001 8000000000000009 and initrd is loaded onto 0x000000007F920000-0x000000007F932FFF. free_initrd_mem() is freed pages belong to 0x000000007F932FFF, with 0x000000007F933000-0x000000007F933FFF. This is EFI work area, so then conflicts be happened between kernel and EFI. Quick hack: We don't have confidence, but this patch works well on our test. --- arch/ia64/mm/init.c.orig Tue Jul 24 09:16:33 2001 +++ arch/ia64/mm/init.c Tue Jul 24 10:43:07 2001 @@ -136,6 +136,7 @@ * initrd_start and keep initrd_end as is. */ start = PAGE_ALIGN(start); + end = end & PAGE_MASK; if (start < end) printk ("Freeing initrd memory: %ldkB freed\n", (end - start) >> 10);