While 5.8.0 worked fine on my HP RP2470 (Gentoo with 10.2.0 kgcc), yesterdays dddcbc139e96 and todays a1d21081a60d crash on boot. I have started bisecting it.
And finished now. I included all CC-s and SOB-s from the commit to this mail - sorry if too broad.
1355c31eeb7ea61a7f2f2937d17cd4e343a6b5af is the first bad commit
commit 1355c31eeb7ea61a7f2f2937d17cd4e343a6b5af
Author: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Date: Thu Aug 6 23:22:39 2020 -0700
asm-generic: pgalloc: provide generic pmd_alloc_one() and pmd_free_one()
For most architectures that support >2 levels of page tables,
pmd_alloc_one() is a wrapper for __get_free_pages(), sometimes with
__GFP_ZERO and sometimes followed by memset(0) instead.
More elaborate versions on arm64 and x86 account memory for the user page
tables and call to pgtable_pmd_page_ctor() as the part of PMD page
initialization.
Move the arm64 version to include/asm-generic/pgalloc.h and use the
generic version on several architectures.
The pgtable_pmd_page_ctor() is a NOP when ARCH_ENABLE_SPLIT_PMD_PTLOCK is
not enabled, so there is no functional change for most architectures
except of the addition of __GFP_ACCOUNT for allocation of user page
tables.
The pmd_free() is a wrapper for free_page() in all the cases, so no
functional change here.
Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Reviewed-by: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Abdul Haleem <abdhalee@xxxxxxxxxxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Cc: Joerg Roedel <joro@xxxxxxxxxx>
Cc: Joerg Roedel <jroedel@xxxxxxx>
Cc: Max Filippov <jcmvbkbc@xxxxxxxxx>
Cc: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: Satheesh Rajendran <sathnaga@xxxxxxxxxxxxxxxxxx>
Cc: Stafford Horne <shorne@xxxxxxxxx>
Cc: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20200627143453.31835-5-rppt@xxxxxxxxxx
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
arch/alpha/include/asm/pgalloc.h | 15 +------------
arch/arm/include/asm/pgalloc.h | 11 ---------
arch/arm64/include/asm/pgalloc.h | 27 +---------------------
arch/ia64/include/asm/pgalloc.h | 10 ---------
arch/mips/include/asm/pgalloc.h | 8 ++-----
arch/parisc/include/asm/pgalloc.h | 11 ++-------
arch/riscv/include/asm/pgalloc.h | 13 +----------
arch/sh/include/asm/pgalloc.h | 3 +++
arch/um/include/asm/pgalloc.h | 8 +------
arch/um/include/asm/pgtable-3level.h | 3 ---
arch/um/kernel/mem.c | 12 ----------
arch/x86/include/asm/pgalloc.h | 26 +---------------------
include/asm-generic/pgalloc.h | 43 ++++++++++++++++++++++++++++++++++++
13 files changed, 55 insertions(+), 135 deletions(-)
Last output lines from 5.8.0-13161-gdddcbc139e96:
[ 1.150985] 1. Crescendo 750 W2 at 0xfffffffffffa0000 [160] { 0, 0x0, 0x5e3, 0x00004 }
[ 1.243570] 2. Memory at 0xfffffffffed08000 [8] { 1, 0x0, 0x09b, 0x00009 }
[ 1.243792] 3. Astro BC Runway Port at 0xfffffffffed00000 [0] { 12, 0x0, 0x582, 0x0000b }
[ 1.382893] 4. Elroy PCI Bridge at 0xfffffffffed30000 [0/0] { 13, 0x0, 0x782, 0x0000a }
[ 1.522243] 5. Elroy PCI Bridge at 0xfffffffffed34000 [0/2] { 13, 0x0, 0x782, 0x0000a }
[ 1.660767] 6. Elroy PCI Bridge at 0xfffffffffed38000 [0/4] { 13, 0x0, 0x782, 0x0000a }
[ 1.799247] 7. Elroy PCI Bridge at 0xfffffffffed3c000 [0/6] { 13, 0x0, 0x782, 0x0000a }
[ 1.799500]
********** VIRTUAL FRONT PANEL **********
System Boot detected
*****************************************
LEDs: RUN ATTENTION FAULT REMOTE POWER
ON FLASH OFF ON ON
LED State: There was a system interruption that did not take the system down.
Check Chassis and Console Logs for error messages.
processor system initialization 1C00
*****************************************
************ EARLY BOOT VFP *************
End of early boot detected
*****************************************
h support not available.
[ 2.639001] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
********** VIRTUAL FRONT PANEL **********
System Boot detected
*****************************************
LEDs: RUN ATTENTION FAULT REMOTE POWER
ON FLASH FLASH ON ON
LED State: System Running. Unexpected Reboot. Non-critical Error Detected.
Check Chassis and Console Logs for error messages.
processor system panic 1B00
--
Meelis Roos <mroos@xxxxxxxx>
