On Sun, 7 Nov 2010 16:44:46 +0000 (GMT) Kjell Rune Skaaraas <kjella79@xxxxxxxx> wrote: > After upgrading from 2.6.36 for other reasons, starting certain apps like wine utorrent.exe will cause a kernel oops. I run the x86_64 version of Ubuntu 10.10 with various modified packages all around and the 2.6.37-rc1 kernel from the kernel PPA team. I experienced the same with a kernel I tried compiling myself too. > > Nov 7 17:25:50 wodan kernel: [77498.450787] BUG: unable to handle kernel NULL pointer dereference at 0000000000000040 > Nov 7 17:25:50 wodan kernel: [77498.450883] IP: [<ffffffffa0395729>] cifs_ioctl+0x39/0x2f0 [cifs] > Nov 7 17:25:50 wodan kernel: [77498.450987] PGD 1836a067 PUD 5bfac067 PMD 17d2b067 PTE 0 > Nov 7 17:25:50 wodan kernel: [77498.451234] CPU 4 > Nov 7 17:25:50 wodan kernel: [77498.451264] Modules linked in: binfmt_misc vboxnetadp vboxnetflt vboxdrv snd_hda_codec_hdmi snd_hda_codec_realtek nls_cp437 cifs snd_hda_intel snd_hda_codec snd_seq_midi snd_rawmidi snd_hwdep snd_pcm snd_seq_midi_event snd_seq snd_timer snd_seq_device ppdev lp parport_pc serio_raw snd shpchp soundcore parport joydev snd_page_alloc sha256_generic cryptd aes_x86_64 aes_generic dm_crypt radeon ttm usbhid ahci hid drm_kms_helper r8169 libahci pata_jmicron drm mii floppy i2c_algo_bit > Nov 7 17:25:50 wodan kernel: [77498.451845] > Nov 7 17:25:50 wodan kernel: [77498.451865] Pid: 4386, comm: utorrent.exe Not tainted 2.6.37-020637rc1-generic #201011020905 P55-UD3R/P55-UD3R > Nov 7 17:25:50 wodan kernel: [77498.451971] RIP: 0010:[<ffffffffa0395729>] [<ffffffffa0395729>] cifs_ioctl+0x39/0x2f0 [cifs] > Nov 7 17:25:50 wodan kernel: [77498.452074] RSP: 0018:ffff880018899e98 EFLAGS: 00010282 > Nov 7 17:25:50 wodan kernel: [77498.452131] RAX: ffff880207a08300 RBX: ffff88005c884780 RCX: 0000000000222000 > Nov 7 17:25:50 wodan kernel: [77498.452207] RDX: 0000000000222000 RSI: 0000000082187201 RDI: ffff88005c884780 > Nov 7 17:25:50 wodan kernel: [77498.452282] RBP: ffff880018899ee8 R08: 000000000000001c R09: 00000000007bf700 > Nov 7 17:25:50 wodan kernel: [77498.452358] R10: ffff880018898000 R11: 0000000000000000 R12: 0000000082187201 > Nov 7 17:25:50 wodan kernel: [77498.452433] R13: 0000000000000000 R14: 0000000000222000 R15: ffff880207a4c2c0 > Nov 7 17:25:50 wodan kernel: [77498.452510] FS: 000000007ffd8000(0063) GS:ffff8800df900000(006b) knlGS:00000000f74426c0 > Nov 7 17:25:50 wodan kernel: [77498.452595] CS: 0010 DS: 002b ES: 002b CR0: 000000008005003b > Nov 7 17:25:50 wodan kernel: [77498.452656] CR2: 0000000000000040 CR3: 000000005b77e000 CR4: 00000000000026e0 > Nov 7 17:25:50 wodan kernel: [77498.452732] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > Nov 7 17:25:50 wodan kernel: [77498.452808] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Nov 7 17:25:50 wodan kernel: [77498.452884] Process utorrent.exe (pid: 4386, threadinfo ffff880018898000, task ffff8800188bdb00) > Nov 7 17:25:50 wodan kernel: [77498.452999] 00000000fffffff7 ffff880018899ef8 0000000000000000 0000000000000000 > Nov 7 17:25:50 wodan kernel: [77498.453084] ffff880018899ee8 0000000000000000 0000000000222000 ffff88005c884780 > Nov 7 17:25:50 wodan kernel: [77498.453169] 0000000000222000 000000000000001c ffff880018899ef8 ffffffff8116e94d > Nov 7 17:25:50 wodan kernel: [77498.453287] [<ffffffff8116e94d>] vfs_ioctl+0x1d/0x50 > Nov 7 17:25:50 wodan kernel: [77498.453343] [<ffffffff8116f52d>] do_vfs_ioctl+0x7d/0x1f0 > Nov 7 17:25:50 wodan kernel: [77498.453405] [<ffffffff811a5c62>] compat_sys_ioctl+0x122/0x200 > Nov 7 17:25:50 wodan kernel: [77498.453470] [<ffffffff81048560>] sysenter_dispatch+0x7/0x2e > Nov 7 17:25:50 wodan kernel: [77498.454010] RSP <ffff880018899e98> > Nov 7 17:25:50 wodan kernel: [77498.478707] ---[ end trace 4e689dcb8ba02a93 ]--- > > Hopefully this makes more sense to someone than it does to me :) > Ok, the patch I just sent to the list seems to fix this for me and this is clearly our bug. But, I have to wonder -- what is wine doing running ioctls against files? -- Jeff Layton <jlayton@xxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
