lkml.org 
[lkml]   [2023]   [Aug]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH] ARM: ptrace: fix scno of -1 cause SIGILL
Date

> In commit [1], the -1 scno is used as a special scno when the task's
> syscall is traced.

> After commit [2], PTRACE_SET_SYSCALL will always mask syscall with
> __NR_SYSCALL_MASK, this makes the condition `cmp scno, #-1` broken,
> and some test like Android VTS[3] is also failed because SIGILL
> interrupt the test program.

> Let's test with `and` logic with #0x0ff000. Instead of #__NR_SYSCALL_MASK
> because of the constraint of ARM Operand2 rules and avoid conflicting
> with ARM private syscall.

...

Please follow the commit from Kees below and ignore this patch, thanks.

https://lore.kernel.org/all/20230804071045.never.134-kees@kernel.org/


\
 
 \ /
  Last update: 2023-08-07 09:56    [W:0.056 / U:0.836 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site