[Bug 223813] [mps] page fault in mps_user_pass_thru() -> copyout() on 11.1-RELEASE-p4, sys/dev/mps/mps_user.c:1040

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=223813

Babak Farrokhi <farrokhi at FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|Affects Only Me             |Affects Some People

--- Comment #4 from Babak Farrokhi <farrokhi at FreeBSD.org> ---
(kgdb) up
#11 0xffffffff809d24a8 in devfs_ioctl_f (fp=0xfffff80010ed3320, com=3224914180,
data=0xfffffe085b7578d0, cred=0xfffff80100e65e00, td=0xfffff800251f5000)
    at /usr/src/sys/fs/devfs/devfs_vnops.c:791
791             error = dsw->d_ioctl(dev, com, data, fp->f_flag, td);
(kgdb) list
786                             error = copyout(p, fgn->buf, i);
787                     td->td_fpop = fpop;
788                     dev_relthread(dev, ref);
789                     return (error);
790             }
791             error = dsw->d_ioctl(dev, com, data, fp->f_flag, td);
792             td->td_fpop = NULL;
793             dev_relthread(dev, ref);
794             if (error == ENOIOCTL)
795                     error = ENOTTY;

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