| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Sun, 8 Jul 2012 16:01:53 +0300 From: Martin-Éric Racine <martin-eric.racine@....fi> To: Jean-François Moine <moinejf@...e.fr> Cc: 677533@...s.debian.org, linux-media@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: video: USB webcam fails since kernel 3.2 2012/6/17 Martin-Éric Racine <martin-eric.racine@....fi>: > pe, 2012-06-15 kello 23:41 -0500, Jonathan Nieder kirjoitti: >> Martin-Éric Racine wrote: >> > usb 1-7: new high-speed USB device number 3 using ehci_hcd >> [...] >> > usb 1-7: New USB device found, idVendor=0ac8, idProduct=0321 >> > usb 1-7: New USB device strings: Mfr=1, Product=2, SerialNumber=0 >> > usb 1-7: Product: USB2.0 Web Camera >> > usb 1-7: Manufacturer: Vimicro Corp. >> [...] >> > Linux media interface: v0.10 >> > Linux video capture interface: v2.00 >> > gspca_main: v2.14.0 registered >> > gspca_main: vc032x-2.14.0 probing 0ac8:0321 >> > usbcore: registered new interface driver vc032x >> >> The device of interest is discovered. >> >> > gspca_main: ISOC data error: [36] len=0, status=-71 >> > gspca_main: ISOC data error: [65] len=0, status=-71 >> [...] >> > gspca_main: ISOC data error: [48] len=0, status=-71 >> > video_source:sr[3246]: segfault at 0 ip (null) sp ab36de1c error 14 in cheese[8048000+21000] >> > gspca_main: ISOC data error: [17] len=0, status=-71 >> >> (The above data error spew starts around t=121 seconds and continues >> at a rate of about 15 messages per second. The segfault is around >> t=154.) > >> The vc032x code hasn't changed since 3.4.1, so please report your >> symptoms to Jean-François Moine <moinejf@...e.fr>, cc-ing >> linux-media@...r.kernel.org, linux-kernel@...r.kernel.org, and either >> me or this bug log so we can track it. Be sure to mention: >> >> - steps to reproduce, expected result, actual result, and how the >> difference indicates a bug (should be simple enough in this case) > > 1. Ensure that user 'myself' is a member of the 'video' group. > 2. Launch the webcam application Cheese from the GNOME desktop. > > Expected result: Cheese displays whatever this laptop's camera sees. > > Actual result: Cheese crashes while attempting to access the camera. > >> - how reproducible the bug is (100%?) > > 100% > >> - which kernel versions you have tested and result with each (what is >> the newest kernel version that worked?) > > It probably was 3.1.0 or some earlier 3.2 release (the upcoming Debian > will release with 3.2.x; 3.4 was only used here for testing purposes), > but I wouldn't know for sure since I don't use my webcam too often. I finally found time to perform further testing, using kernel packages from snapshots.debian.org, and the last one that positively worked (at least using GNOME's webcam application Cheese) was: linux-image-3.1.0-1-686-pae 3.1.8-2 Linux 3.1 for modern PCs This loaded the following video modules: gspca_vc032x gspca_main videodev media Tests using 3.2.1-1 or more recent crashed as described before. This at least gives us a time frame for when the regression started. Martin-Éric -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists