Alpha oops in modprobe - devfs related?

• Messages sorted by: [ date ][ thread ][ subject ][ author ]
• Next message: Wakko Warner: "Re: PCI irq sharing and X on Linux"
• Previous message: Linux Lists: "SMP (IO-APIC??) weirdness"

my kernel is 2.2.11-rth1, with devfs99.3, raid0145-2.2.6,
quota-fix-2.2.8-1.diff, nfsd-2.2.7-3.patch and
nfsd-2.2.7-lockd.patch.

Machine is an Alpha 600 Samsung UX. Yamaha cdr4416s.

The oops seems to happens just after cdrecord opens /dev/sg/c0b0t3u0.
cdrecord segfaults with:

open("/dev/sg/c0b0t3u0", O_RDWR|O_NONBLOCK) = 3
ioctl(3, CDROMAUDIOBUFSIZ, 0x11fffd588) = 0
ioctl(3, 0x5386, 0x11fffd580) = 0
ioctl(3, 0x2206, 0) = -1 EINVAL (Invalid
argument)
ioctl(3, 0x2272, 0x11fffd590) = 0
ioctl(3, CDROMAUDIOBUFSIZ, 0x11fffd518) = 0
ioctl(3, 0x5386, 0x11fffd510) = 0
fcntl(3, F_GETFL) = 0x6 (flags
O_RDWR|O_NONBLOCK)
fcntl(3, F_SETFL, O_RDWR) = 0
ioctl(3, TIOCSCCINI, 0x11fffd470) = 0
ioctl(3, 0x2272, 0x11fffd538) = 0
brk(0x120146000) = -1 ENOMEM (Cannot allocate
memory)
--- SIGSEGV (Segmentation fault) ---
+++ killed by SIGSEGV +++

This sets off a modprobe (cause of devfs) for what module i don't
know - maybe none, which causes the segfault in dik_show_code. The
oops isn't fatal at all. It happens consistently when i
run cdrecord. The machine works fine apart that.

I've recompiled my kernel with scsi-generics built-in instead of as a
module, and with devfs-v99.4. Now the oops doesn't happen
consistently, just every now and then, and in [die_if_kernel] instead
of [dik_show_code], eg:

Jul 8 00:42:52 fogarty kernel: Unable to load interpreter
Jul 8 00:42:52 fogarty kernel: Unable to handle kernel paging
request at virtual address 0000000000000000
Jul 8 00:42:52 fogarty kernel: modprobe(1050): Oops -1
Jul 8 00:42:53 fogarty kernel: pc = [<0000000000000000>] ra =
[<0000000000000000>] ps = 0000
Jul 8 00:42:53 fogarty kernel: r0 = 0000000000000000 r1 =
0000000000000000 r2 = 0000000000000000
Jul 8 00:42:53 fogarty kernel: r3 = 0000000000000000 r4 =
0000000000000000 r5 = 0000000000000000
Jul 8 00:42:53 fogarty kernel: r6 = 0000000000000000 r7 =
0000000000000000 r8 = 0000000000000000
Jul 8 00:42:53 fogarty kernel: r9 = 0000000000000400 r10=
fffffc0005c53df7 r11= fffffc0000480a20
Jul 8 00:42:53 fogarty kernel: r12= fffffc00002b75e0 r13=
fffffc0005c53d08 r14= 0000000000000008
Jul 8 00:42:53 fogarty kernel: r15= fffffc00002b75e0
Jul 8 00:42:53 fogarty kernel: r16= 0000000000000000 r17=
0000000000000000 r18= 0000000000000000
Jul 8 00:42:53 fogarty kernel: r19= 0000000000000000 r20=
0000000000000000 r21= 0000000000000000
Jul 8 00:42:53 fogarty kernel: r22= 0000000000000000 r23=
0000000000000000 r24= 0000000000000000
Jul 8 00:42:53 fogarty kernel: r25= 0000000000000000 r27=
0000000000000000 r28= 0000000000000000
Jul 8 00:42:53 fogarty kernel: gp = 0000000000000000 sp =
fffffc0006813c30
Jul 8 00:42:53 fogarty kernel: Code: 00000000 00001111 000030eb
modprobe: Exception at [die_if_kernel+148/544] (fffffc00003111d8)
Jul 8 00:42:53 fogarty kernel:
Jul 8 00:42:53 fogarty kernel: Trace:
Jul 8 00:43:09 fogarty kernel: Unable to load interpreter
Jul 8 00:43:09 fogarty kernel: Unable to handle kernel paging
request at virtual address 0000000000000000
Jul 8 00:43:09 fogarty kernel: modprobe(1054): Oops -1
Jul 8 00:43:09 fogarty kernel: pc = [<0000000000000000>] ra =
[<0000000000000000>] ps = 0000
Jul 8 00:43:09 fogarty kernel: r0 = 0000000000000000 r1 =
0000000000000000 r2 = 0000000000000000
Jul 8 00:43:09 fogarty kernel: r3 = 0000000000000000 r4 =
0000000000000000 r5 = 0000000000000000
Jul 8 00:43:09 fogarty kernel: r6 = 0000000000000000 r7 =
0000000000000000 r8 = 0000000000000000
Jul 8 00:43:10 fogarty kernel: r9 = 0000000000000400 r10=
fffffc0006947df7 r11= fffffc0000480a20
Jul 8 00:43:10 fogarty kernel: r12= fffffc00002b75e0 r13=
fffffc0006947d08 r14= 0000000000000008
Jul 8 00:43:10 fogarty kernel: r15= fffffc00002b75e0
Jul 8 00:43:10 fogarty kernel: r16= 0000000000000000 r17=
0000000000000000 r18= 0000000000000000
Jul 8 00:43:10 fogarty kernel: r19= 0000000000000000 r20=
0000000000000000 r21= 0000000000000000
Jul 8 00:43:10 fogarty kernel: r22= 0000000000000000 r23=
0000000000000000 r24= 0000000000000000
Jul 8 00:43:10 fogarty kernel: r25= 0000000000000000 r27=
0000000000000000 r28= 0000000000000000
Jul 8 00:43:10 fogarty kernel: gp = 0000000000000000 sp =
fffffc000669bc30
Jul 8 00:43:10 fogarty kernel: Code: 00000000 00001111 00002b3b
modprobe: Exception at [die_if_kernel+148/544] (fffffc00003111d8)
Jul 8 00:43:10 fogarty kernel:
Jul 8 00:43:10 fogarty kernel: Trace:

any ideas?

-- 
Paul Jakma
paul@clubi.ie	http://hibernia.clubi.ie
PGP5 key: http://www.clubi.ie/jakma/publickey.txt
-------------------------------------------
Fortune:
If Patrick Henry thought that taxation without representation was bad,
he should see how bad it is with representation.



-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

• Next message: Wakko Warner: "Re: PCI irq sharing and X on Linux"
• Previous message: Linux Lists: "SMP (IO-APIC??) weirdness"