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Code Issues Releases Activity

Use uintptr_t instead of unsigned long for pointers.

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The sense_ptr thing is quite broken.  As near as I can tell, the
driver tries to copyout to a physical address rather than whatever
user address the sense buffer should be copied to.  It is not
immediately obvious what user address the sense buffer should be
copied to.

Reviewed by:	imp
Obtained from:	CheriBSD
Sponsored by:	DARPA
Differential Revision:	https://reviews.freebsd.org/D27578
This commit is contained in:
John Baldwin 2020-12-16 00:13:32 +00:00
parent ce8395ecfd
commit f83d3280f6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=368686
1 changed files with 4 additions and 4 deletions
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8
sys/dev/mrsas/mrsas_ioctl.c
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@ -136,7 +136,7 @@ mrsas_passthru(struct mrsas_softc *sc, void *arg, u_long ioctlCmd)
* iocpacket itself.
*/
kern_sge32 = (struct mrsas_sge32 *)
((unsigned long)cmd->frame + user_ioc->sgl_off);
((uintptr_t)cmd->frame + user_ioc->sgl_off);
memset(ioctl_data_tag, 0, (sizeof(bus_dma_tag_t) * MAX_IOCTL_SGE));
memset(ioctl_data_dmamap, 0, (sizeof(bus_dmamap_t) * MAX_IOCTL_SGE));
@ -243,7 +243,7 @@ mrsas_passthru(struct mrsas_softc *sc, void *arg, u_long ioctlCmd)
goto out;
}
sense_ptr =
(unsigned long *)((unsigned long)cmd->frame + user_ioc->sense_off);
(unsigned long *)((uintptr_t)cmd->frame + user_ioc->sense_off);
*sense_ptr = ioctl_sense_phys_addr;
}
/*
@ -290,9 +290,9 @@ mrsas_passthru(struct mrsas_softc *sc, void *arg, u_long ioctlCmd)
* sense_buff points to the location that has the user sense
* buffer address
*/
sense_ptr = (unsigned long *)((unsigned long)user_ioc->frame.raw +
sense_ptr = (unsigned long *)((uintptr_t)user_ioc->frame.raw +
user_ioc->sense_off);
ret = copyout(ioctl_sense_mem, (unsigned long *)*sense_ptr,
ret = copyout(ioctl_sense_mem, (unsigned long *)(uintptr_t)*sense_ptr,
user_ioc->sense_len);
if (ret) {
device_printf(sc->mrsas_dev, "IOCTL sense copyout failed!\n");