From: Andrew Morton <akpm@xxxxxxxx> Date: Wed, 6 Sep 2006 22:42:56 -0700 > It oopsed. ... > discover(2007): Oops [#1] > TSTATE: 0000004411009607 TPC: 0000000000428644 TNPC: 0000000000428648 Y: 00000000 Not tainted > TPC: <of_find_property+0xc/0x60> > g0: fffff80016823231 g1: 0000000020004f07 g2: 0000000020004c00 g3: 0000000000000f7c > g4: fffff80017c30e00 g5: 0000000000000000 g6: fffff80016820000 g7: 0000000000000000 > o0: fffff80017f38940 o1: 00000000000000d0 o2: 0000000001010101 o3: 0000000080808080 > o4: 0000000053554e57 o5: 0000000073627573 sp: fffff800168231f1 ret_pc: 00000000f7fa8db0 > RPC: <0xf7fa8db8> > l0: 000000000000058c l1: 00000000f7fad4a0 l2: 00000000f7fbef78 l3: 0000000000000000 > l4: 0000000000000000 l5: 0000000000000000 l6: 0000000000000000 l7: 00000000f7fbe7ac > i0: 0000000000000000 i1: fffff800179bb004 i2: fffff80016823c2c i3: fffff800179bb000 > i4: 0000000000000000 i5: 0000000000000000 i6: fffff800168232b1 i7: 00000000004286b0 > I7: <of_get_property+0x18/0x40> > Caller[00000000004286b0]: of_get_property+0x18/0x40 > Caller[00000000005c8e70]: opromgetprop+0x18/0xa0 > Caller[00000000005c92b0]: openprom_sunos_ioctl+0xf8/0x240 > Caller[00000000005c9c8c]: openprom_compat_ioctl+0x54/0x60 > Caller[00000000004c773c]: compat_sys_ioctl+0x204/0x280 > Caller[00000000004069d4]: linux_sparc_syscall32+0x3c/0x40 > Caller[00000000f7fa8d54]: 0xf7fa8d5c > Instruction DUMP: 01000000 01000000 9de3bf40 <f05e2028> 02c60011 01000000 d05e0000 4004c0c3 92100019 The /dev/openprom driver is somehow getting a NULL pointer in data->current_node. I think the issue is that we don't handle the termination properly when OPROMNEXT hits the end of the list. We set ->current_node to NULL and things explode. The NULL ->current_node handling in this file needs a lot of fixing and auditing, I'll try to work on fixing all of it soon. Thanks for the report. - To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
