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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-09 13:33:54 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-09 13:33:54 -0700 |
commit | 8d3e09b43312991c503478bf0f5f99e92c23ccf1 (patch) | |
tree | d5565651cc4ceac306d3aa266cf51e6bf66d8a9a /arch/ia64 | |
parent | 9420f1ce01869409d78901c3e036b2c437cbc6b8 (diff) | |
parent | bb1a773d5b6bf018bf84fdb3fbba01d3ef54e2c9 (diff) |
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull regset conversion fix from Al Viro:
"Fix a regression from an unnoticed bisect hazard in the regset series.
A bunch of old (aout, originally) primitives used by coredumps became
dead code after fdpic conversion to regsets. Removal of that dead code
had been the first commit in the followups to regset series;
unfortunately, it happened to hide the bisect hazard on sh (extern for
fpregs_get() had not been updated in the main series when it should
have been; followup simply made fpregs_get() static). And without that
followup commit this bisect hazard became breakage in the mainline"
Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
kill unused dump_fpu() instances
Diffstat (limited to 'arch/ia64')
-rw-r--r-- | arch/ia64/kernel/process.c | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c index ec0b40f6e9c6..36eba4ba6543 100644 --- a/arch/ia64/kernel/process.c +++ b/arch/ia64/kernel/process.c @@ -531,51 +531,17 @@ do_copy_task_regs (struct task_struct *task, struct unw_frame_info *info, void * } void -do_dump_task_fpu (struct task_struct *task, struct unw_frame_info *info, void *arg) -{ - elf_fpreg_t *dst = arg; - int i; - - memset(dst, 0, sizeof(elf_fpregset_t)); /* don't leak any "random" bits */ - - if (unw_unwind_to_user(info) < 0) - return; - - /* f0 is 0.0, f1 is 1.0 */ - - for (i = 2; i < 32; ++i) - unw_get_fr(info, i, dst + i); - - ia64_flush_fph(task); - if ((task->thread.flags & IA64_THREAD_FPH_VALID) != 0) - memcpy(dst + 32, task->thread.fph, 96*16); -} - -void do_copy_regs (struct unw_frame_info *info, void *arg) { do_copy_task_regs(current, info, arg); } void -do_dump_fpu (struct unw_frame_info *info, void *arg) -{ - do_dump_task_fpu(current, info, arg); -} - -void ia64_elf_core_copy_regs (struct pt_regs *pt, elf_gregset_t dst) { unw_init_running(do_copy_regs, dst); } -int -dump_fpu (struct pt_regs *pt, elf_fpregset_t dst) -{ - unw_init_running(do_dump_fpu, dst); - return 1; /* f0-f31 are always valid so we always return 1 */ -} - /* * Flush thread state. This is called when a thread does an execve(). */ |