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af66b2d88a
Currently, VFP registers are omitted from coredumps for compat processes, due to a bug in the REGSET_COMPAT_VFP regset implementation. compat_vfp_get() needs to transfer non-contiguous data from thread_struct.fpsimd_state, and uses put_user() to handle the offending trailing word (FPSCR). This fails when copying to a kernel address (i.e., kbuf && !ubuf), which is what happens when dumping core. As a result, the ELF coredump core code silently omits the NT_ARM_VFP note from the dump. It would be possible to work around this with additional special case code for the put_user(), but since user_regset_copyout() is explicitly designed to handle this scenario it is cleaner to port the put_user() to a user_regset_copyout() call, which this patch does. Signed-off-by: Dave Martin <Dave.Martin@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> |
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| crypto | ||
| include | ||
| kernel | ||
| kvm | ||
| lib | ||
| mm | ||
| net | ||
| xen | ||
| Kconfig | ||
| Kconfig.debug | ||
| Kconfig.platforms | ||
| Makefile | ||