iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
5409730962
linux/arch
History
Peter Zijlstra 5409730962 x86/static_call: Fix __static_call_fixup() 
Christian reported spurious module load crashes after some of Song's
module memory layout patches.

Turns out that if the very last instruction on the very last page of the
module is a 'JMP __x86_return_thunk' then __static_call_fixup() will
trip a fault and die.

And while the module rework made this slightly more likely to happen,
it's always been possible.

Fixes: ee88d363d1 ("x86,static_call: Use alternative RET encoding")
Reported-by: Christian Bricart <christian@bricart.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Link: https://lkml.kernel.org/r/20230816104419.GA982867@hirez.programming.kicks-ass.net
2023-08-17 13:24:09 +02:00
..
alpha Kbuild fixes for v6.5 (2nd) 2023-08-13 08:56:24 -07:00
arc asm-generic updates for 6.5 2023-07-06 10:06:04 -07:00
arm ARM: SoC fixes for 6.5, part 2 2023-08-02 18:21:12 -07:00
arm64 locking: remove spin_lock_prefetch 2023-08-12 09:18:47 -07:00
csky arch/csky patches for 6.5 2023-07-01 21:12:32 -07:00
hexagon Merge branch 'expand-stack' 2023-06-28 20:35:21 -07:00
ia64 locking: remove spin_lock_prefetch 2023-08-12 09:18:47 -07:00
loongarch arch/*/configs/*defconfig: Replace AUTOFS4_FS by AUTOFS_FS 2023-07-29 14:08:22 -07:00
m68k m68k: Fix invalid .section syntax 2023-07-24 14:50:02 +02:00
microblaze slab updates for 6.5 2023-06-29 16:34:12 -07:00
mips locking: remove spin_lock_prefetch 2023-08-12 09:18:47 -07:00
nios2 slab updates for 6.5 2023-06-29 16:34:12 -07:00
openrisc OpenRISC fix for 6.5 2023-07-12 16:28:53 -07:00
parisc io_uring-6.5-2023-08-11 2023-08-11 12:06:51 -07:00
powerpc locking: remove spin_lock_prefetch 2023-08-12 09:18:47 -07:00
riscv RISC-V Fixes for 6.5-rc6 2023-08-11 09:12:44 -07:00
s390 s390 fixes for 6.5-rc5 2023-08-03 09:06:38 -07:00
sh arch/*/configs/*defconfig: Replace AUTOFS4_FS by AUTOFS_FS 2023-07-29 14:08:22 -07:00
sparc locking: remove spin_lock_prefetch 2023-08-12 09:18:47 -07:00
um arch/*/configs/*defconfig: Replace AUTOFS4_FS by AUTOFS_FS 2023-07-29 14:08:22 -07:00
x86 x86/static_call: Fix __static_call_fixup() 2023-08-17 13:24:09 +02:00
xtensa xtensa: fix unaligned and load/store configuration interaction 2023-07-10 21:41:04 -07:00
.gitignore
Kconfig - Arnd Bergmann has fixed a bunch of -Wmissing-prototypes in 2023-06-28 10:59:38 -07:00