115336 2005-12-12 11:51 0000 alsa-driver-1.0.10 oopses on gentoo-sources kernels 2.6.13 and 2.6.14 2005-12-15 14:24:48 0000 1 1 1 Unclassified Gentoo Linux Core system unspecified All Linux RESOLVED FIXED P2 critical --- 1 ari@goron.de sound@gentoo.org steev@gentoo.org ari@goron.de 2005-12-12 11:51:32 0000 Alsa driver 1.0.10 causes oopses on modprobing snd_virmidi.ko or snd_mpu401.ko on both gentoo-sources kernels 2.6.13-gentoo-rx and 2.6.14-gentoo-rx (x = any). I first worked this around by commenting out: #if 0 if ((err = snd_card_set_generic_dev(card)) < 0) goto __nodev; #endif in the affected files (to mimic 1.0.10rc2 and previous behaviour). The correct fix however is already in the upstream (alsa) cvs. I'll post the patch in the next comment. The problem is worse with gentoo-sources 2.6.14-gentoo-r4, as even the in-kernel driver (which is bit-identical to the alsa-driver-1.0.10 file) produces this failure. Reproducible: Always Steps to Reproduce: 1. emerge, configure, boot kernel 2.6.14-gentoo-r4 2. emerge alsa-driver-1.0.10 (tested ~amd64, upstream has reports for x86 and ppc also) 3. modprobe snd_mpu401 Actual Results: Dec 10 16:48:34 ale Unable to handle kernel NULL pointer dereference at 0000000000000000 RIP: Dec 10 16:48:34 ale [<0000000000000000>] Dec 10 16:48:34 ale PGD 7e9c1067 PUD 7eb49067 PMD 0 Dec 10 16:48:34 ale Oops: 0010 [1] Dec 10 16:48:34 ale CPU 0 Dec 10 16:48:34 ale Modules linked in: snd_mpu401 nvidia snd_bt87x snd_ac97_codec snd_ac97_bus snd_pcm snd_timer snd_page_alloc snd_mpu401_uart snd_rawmidi snd_seq_device snd Dec 10 16:48:34 ale Pid: 2839, comm: modprobe Tainted: P 2.6.14-gentoo-r4 #1 Dec 10 16:48:34 ale RIP: 0010:[<0000000000000000>] [<0000000000000000>] Dec 10 16:48:34 ale RSP: 0018:ffff81007e3bfa90 EFLAGS: 00010286 Dec 10 16:48:34 ale RAX: ffffffff8800c328 RBX: ffff81007ed8d810 RCX: 0000000000000000 Dec 10 16:48:34 ale RDX: 0000000000000009 RSI: ffffffff88006f59 RDI: ffff81007ed8d800 Dec 10 16:48:34 ale RBP: ffffffff8800c328 R08: 0000000000000000 R09: ffff81007cf09420 Dec 10 16:48:34 ale R10: 000000000007a55f R11: 0000000000000000 R12: 0000000000000000 Dec 10 16:48:34 ale R13: ffff81007ed8d810 R14: 0000000000000000 R15: 0000000000000016 Dec 10 16:48:34 ale FS: 00002aaaaaefbd50(0000) GS:ffffffff80614800(0000) knlGS:0000000000000000 Dec 10 16:48:34 ale CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Dec 10 16:48:34 ale CR2: 0000000000000000 CR3: 000000007e0be000 CR4: 00000000000006e0 Dec 10 16:48:34 ale Process modprobe (pid: 2839, threadinfo ffff81007e3be000, task ffff81007dc254d0) Dec 10 16:48:34 ale Stack: ffffffff80297aff 0000000000000000 ffff81007e3bfab8 ffffffff80297b70 Dec 10 16:48:34 ale ffffffff802972a6 ffffffff804c4248 ffffffff804c4248 ffffffff8800c3c0 Dec 10 16:48:34 ale ffff81007ec53d20 ffff81007ec53d20 Dec 10 16:48:34 ale Call Trace:<ffffffff80297aff>{driver_probe_device+79} <ffffffff80297b70>{__device_attach+0} Dec 10 16:48:34 ale <ffffffff802972a6>{bus_for_each_drv+70} <ffffffff80297bd8>{device_attach+88} Dec 10 16:48:34 ale <ffffffff80297325>{bus_add_device+69} <ffffffff8029635d>{device_add+173} Dec 10 16:48:34 ale <ffffffff8029950a>{platform_device_register+250} <ffffffff880011b7>{:snd:snd_generic_device_r egister+135} Dec 10 16:48:34 ale <ffffffff88001539>{:snd:snd_card_set_generic_dev+9} Dec 10 16:48:34 ale <ffffffff884ff178>{:snd_mpu401:snd_mpu401_create+376} Dec 10 16:48:34 ale <ffffffff884ff302>{:snd_mpu401:snd_mpu401_pnp_probe+338} ... Expected Results: modprobe suceeds. The tainting is from nvidia module, but oops also happens without. ari@goron.de 2005-12-12 11:52:55 0000 Created an attachment (id=74588) Correct fix for the problem from upstream cvs steev@gentoo.org 2005-12-13 23:20:54 0000 This did in fact fix here on 2.6.14-r4 for me. Thanks for the heads up. flameeyes@gentoo.org 2005-12-15 14:24:48 0000 Committed the patch as 1.0.10-r1, will give that a try on ppc and if it does also fix the pmac problem I'll ask to mark that stable soon. 74588 2005-12-12 11:52 0000 Correct fix for the problem from upstream cvs alsa-driver_1_0_10_00_platform_device_compat.patch text/plain U3ViamVjdDogW1BBVENIXSBGaXggcGxhdGZvcm1fZHJpdmVyIGVtdWxhdGlvbiBmb3Iga2VybmVs cyA8PSAyLjYuMTQKClRoZSBwbGF0Zm9ybV9kcml2ZXJfcmVnaXN0ZXIoKSBzdWJzdGl0dXRlIGlu IGFsc2EtZHJpdmVyLTEuMC4xMCBzZXRzCmRydi0+ZHJpdmVyLnByb2JlIGFuZCBkcnYtPmRyaXZl ci5yZW1vdmUgZnVuY3Rpb25zIHdpdGhvdXQgY2hlY2tpbmcgZm9yCm5vbi1OVUxMIGRydi0+cHJv YmUgYW5kIGRydi0+cmVtb3ZlOyBzbmRfcGxhdGZvcm1fZHJpdmVyX3Byb2JlKCkgYW5kCnNuZF9w bGF0Zm9ybV9kcml2ZXJfcmVtb3ZlKCkgYWxzbyBkbyBub3QgY2hlY2sgZm9yIE5VTEwgaW4gdGhv c2UgZmllbGRzLgpIb3dldmVyLCBzbmRfZ2VuZXJpY19kcml2ZXIgaGFzIE5VTEwgLT5wcm9iZSBh bmQgLT5yZW1vdmUgZnVuY3Rpb25zLAp0aGVyZWZvcmUgYXR0ZW1wdHMgdG8gdXNlIGl0IG9uIGtl cm5lbHMgPD0gMi42LjE0IGxlYWQgdG8gb29wc2VzLgoKVGhpcyBwYXRjaCBjaGFuZ2VzIHBsYXRm b3JtX2RyaXZlcl9yZWdpc3RlcigpIHByb3ZpZGVkIGJ5IGFsc2EtZHJpdmVyCmZvciBvbGQga2Vy bmVscyB0byBtYXRjaCB0aGUgaW1wbGVtZW50YXRpb24gaW4gcG9zdC0yLjYuMTQga2VybmVscywK d2hpY2ggY2hlY2tzIGZvciBOVUxMIC0+cHJvYmUgYW5kIC0+cmVtb3ZlIGZ1bmN0aW9ucy4KClNp Z25lZC1vZmYtYnk6IFNlcmdleSBWbGFzb3YgPHZzdUBhbHRsaW51eC5ydT4KCi0tLSBhbHNhLWRy aXZlci0xLjAuMTAvaW5jbHVkZS9wbGF0Zm9ybV9kZXZpY2VfY29tcGF0LmguYWx0LXBsYXRmb3Jt X2RldmljZV9jb21wYXQJMjAwNS0xMS0xNCAxNzo0MjoyNyArMDMwMAorKysgYWxzYS1kcml2ZXIt MS4wLjEwL2luY2x1ZGUvcGxhdGZvcm1fZGV2aWNlX2NvbXBhdC5oCTIwMDUtMTItMDMgMjM6MDE6 MjYgKzAzMDAKQEAgLTYxLDggKzYxLDEwIEBACiBzdGF0aWMgaW5saW5lIGludCBwbGF0Zm9ybV9k cml2ZXJfcmVnaXN0ZXIoc3RydWN0IHBsYXRmb3JtX2RyaXZlciAqZHJ2KQogewogCWRydi0+ZHJp dmVyLmJ1cyA9ICZwbGF0Zm9ybV9idXNfdHlwZTsKLQlkcnYtPmRyaXZlci5wcm9iZSA9IHNuZF9w bGF0Zm9ybV9kcml2ZXJfcHJvYmU7Ci0JZHJ2LT5kcml2ZXIucmVtb3ZlID0gc25kX3BsYXRmb3Jt X2RyaXZlcl9yZW1vdmU7CisJaWYgKGRydi0+cHJvYmUpCisJCWRydi0+ZHJpdmVyLnByb2JlID0g c25kX3BsYXRmb3JtX2RyaXZlcl9wcm9iZTsKKwlpZiAoZHJ2LT5yZW1vdmUpCisJCWRydi0+ZHJp dmVyLnJlbW92ZSA9IHNuZF9wbGF0Zm9ybV9kcml2ZXJfcmVtb3ZlOwogCWlmIChkcnYtPnN1c3Bl bmQpCiAJCWRydi0+ZHJpdmVyLnN1c3BlbmQgPSBzbmRfcGxhdGZvcm1fZHJpdmVyX3N1c3BlbmQ7 CiAJaWYgKGRydi0+cmVzdW1lKQo=