Hi, this happened, while playing with broken dvd.
ISO 9660 Extensions: Microsoft Joliet Level 3 ISO 9660 Extensions: RRIP_1991A end_request: I/O error, dev sr0, sector 21760 Buffer I/O error on device sr0, logical block 5440 Buffer I/O error on device sr0, logical block 5441 Buffer I/O error on device sr0, logical block 5442 Buffer I/O error on device sr0, logical block 5443 Buffer I/O error on device sr0, logical block 5444 Buffer I/O error on device sr0, logical block 5445 Buffer I/O error on device sr0, logical block 5446 Buffer I/O error on device sr0, logical block 5447 Buffer I/O error on device sr0, logical block 5448 Buffer I/O error on device sr0, logical block 5449 end_request: I/O error, dev sr0, sector 1447344 end_request: I/O error, dev sr0, sector 1447344 end_request: I/O error, dev sr0, sector 21808 end_request: I/O error, dev sr0, sector 21812 end_request: I/O error, dev sr0, sector 21760 end_request: I/O error, dev sr0, sector 21760 end_request: I/O error, dev sr0, sector 21760 end_request: I/O error, dev sr0, sector 21764 end_request: I/O error, dev sr0, sector 21760 end_request: I/O error, dev sr0, sector 21764 end_request: I/O error, dev sr0, sector 21760 end_request: I/O error, dev sr0, sector 21764 end_request: I/O error, dev sr0, sector 21760 end_request: I/O error, dev sr0, sector 21764 end_request: I/O error, dev sr0, sector 21760 end_request: I/O error, dev sr0, sector 21764 end_request: I/O error, dev sr0, sector 21760 end_request: I/O error, dev sr0, sector 21764 end_request: I/O error, dev sr0, sector 21760 printk: 40 messages suppressed. Buffer I/O error on device sr0, logical block 5440 Buffer I/O error on device sr0, logical block 5441 end_request: I/O error, dev sr0, sector 136 ISOFS: unable to read i-node block Unable to handle kernel NULL pointer dereference at 00000000000000ad RIP: [<ffffffff802a679f>] d_splice_alias+0x1f/0x100 PGD 67f1a067 PUD 67e15067 PMD 0 Oops: 0000 [1] SMP last sysfs file: /sys/devices/platform/coretemp.1/temp1_input CPU 0 Modules linked in: isofs tun bitrev ipv6 arc4 ecb crypto_blkcipher cryptomgr cry pto_algapi ath5k mac80211 cfg80211 rtc_cmos rtc_core rtc_lib crc32 floppy ehci_h cd sr_mod cdrom Pid: 3096, comm: nautilus Not tainted 2.6.24-rc5-mm1_64 #354 RIP: 0010:[<ffffffff802a679f>] [<ffffffff802a679f>] d_splice_alias+0x1f/0x100 RSP: 0000:ffff810061543b08 EFLAGS: 00010282 RAX: 00000000ffffffff RBX: fffffffffffffffb RCX: ffffffff880d3454 RDX: ffff810048542750 RSI: ffff81005e114e10 RDI: fffffffffffffffb RBP: ffff810061543b28 R08: 0000000000000049 R09: 8000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff81005e114e10 R13: ffff81005e2b11c0 R14: 0000000000000003 R15: 000000000000013c FS: 0000000042123950(0063) GS:ffffffff80650000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000000ad CR3: 0000000067d2f000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process nautilus (pid: 3096, threadinfo ffff810061542000, task ffff810048542750) Stack: ffff81007c0799c0 fffffffffffffffb ffff81007c0799c0 ffff81005e2b11c0 ffff810061543bd8 ffffffff880d2395 ffffffff802a565b ffff81005e114e10 ffff81005e2ec030 ffff8100638a3000 ffffe200015c63a8 0000000000000022 Call Trace: [<ffffffff880d2395>] :isofs:isofs_lookup+0x395/0x4a0 [<ffffffff802a565b>] d_alloc+0x2b/0x1d0 [<ffffffff8029a97c>] do_lookup+0x1ac/0x200 [<ffffffff8029c747>] __link_path_walk+0x827/0xd10 [<ffffffff8029cc93>] link_path_walk+0x63/0xe0 [<ffffffff8028469f>] free_pages_and_swap_cache+0x9f/0xd0 [<ffffffff8027d7f5>] unmap_region+0x135/0x150 [<ffffffff8028ea65>] kmem_cache_free+0x15/0xa0 [<ffffffff8026f686>] __pagevec_free+0x26/0x30 [<ffffffff8029cd2c>] path_walk+0x1c/0x20 [<ffffffff8029cf53>] do_path_lookup+0x83/0x1b0 [<ffffffff8029dc2c>] __user_walk_fd+0x4c/0x80 [<ffffffff80295b5b>] vfs_lstat_fd+0x2b/0x70 [<ffffffff8028469f>] free_pages_and_swap_cache+0x9f/0xd0 [<ffffffff8027d7f5>] unmap_region+0x135/0x150 [<ffffffff8028ea65>] kmem_cache_free+0x15/0xa0 [<ffffffff80295df7>] sys_newlstat+0x27/0x50 [<ffffffff802521f9>] up_write+0x9/0x10 [<ffffffff8027e755>] sys_munmap+0x55/0x70 [<ffffffff8020ba4e>] system_call+0x7e/0x83 Code: 0f b7 87 b2 00 00 00 25 00 f0 00 00 3d 00 40 00 00 74 27 48 RIP [<ffffffff802a679f>] d_splice_alias+0x1f/0x100 RSP <ffff810061543b08> CR2: 00000000000000ad regards, -- Jiri Slaby ([EMAIL PROTECTED]) Faculty of Informatics, Masaryk University -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/