lor in drm_drv/vm_glue?

[Erik Winge]

Hi all,

I got the following LOR with -current from yesterday.

lock order reversal: (sleepable after non-sleepable)
 1st 0xc2f304d4 drm device (drm device) @
/usr/src/sys/modules/drm/drm/../../../dev/drm/drm_drv.c:904
 2nd 0xc332d464 user map (user map) @ /usr/src/sys/vm/vm_glue.c:182
KDB: stack backtrace:
witness_checkorder(c332d464,9,c0636c35,b6,c0626c4b) at witness_checkorder+0x67a
_sx_xlock(c332d464,c0636c35,b6,c0677d14,1000008) at _sx_xlock+0x5c
useracc(aa6e600,8,1,c04cfcd3,c33c3012) at useracc+0x66
i915_batchbuffer(c3330400,80186443,c345f8c0,3,c3417d00) at
i915_batchbuffer+0x358
drm_ioctl(c3330400,80186443,c345f8c0,3,c3417d00) at drm_ioctl+0x1af
giant_ioctl(c3330400,80186443,c345f8c0,3,c3417d00) at giant_ioctl+0x56
devfs_ioctl_f(c337f4c8,80186443,c345f8c0,c346aa80,c3417d00) at
devfs_ioctl_f+0x66
ioctl(c3417d00,d63bed04,c,d63bec9c,3) at ioctl+0x118
syscall(3b,2862003b,bfbf003b,af89c10,10) at syscall+0x164
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (54, FreeBSD ELF32, ioctl), eip = 0x28602123, esp =
0xbfbfe3ec, ebp= 0xbfbfe408 ---

Erik