This morning, I found the following on my laptop. I hope the kernel version is recent enough to be useful; the only change between then and current 3.2-rc2 I noticed is an NFS lease fix, and the machine has no NFS exports or mounts active. The laptop is a core 2 duo, running a 32-bit kernel with 2 GB of RAM. Uptime is 26 days, although obviously it's been asleep for a lot of that. Non-ECC RAM; it *could* be just a random bit flip, but I'm sending this out into the world in case it's illuniating to someone with a deeper understanding of the relevant data structures. It's running a copy of John Linville's wireless development tree, but the changes there should not affect core file system activity like this. (They're mostly in drivers/net/wireless and net/wireless, touching *nothing* in fs/ or other core kernel code.) The exact kernel I'm running is: > commit 137d0943ea2cbcdbfc38606944fc0b6494f7c935 > Merge: dfd5c52 899e3ee > Author: John W. Linville <linville@xxxxxxxxxxxxx> > Date: Tue Oct 18 10:52:19 2011 -0400 > > Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torva 899e3ee is v3.1-rc10. The commit is available at http://git.kernel.org/?p=linux/kernel/git/linville/wireless-testing.git;a=commit;h=137d0943ea2cbcdbfc38606944fc0b6494f7c935 Local file sytsems are all ext3 or tmpfs. Although I have mounted NFS file systems since reboot, they were all unmounted days before the oops. The machine is still up. I plan on upgrading the kernel and rebooting unless someone would like some specific testing. BUG: unable to handle kernel NULL pointer dereference at 00000018 IP: [<c108a788>] __dentry_open.isra.16+0x12c/0x1ed *pde = 00000000 Oops: 0000 [#1] SMP Modules linked in: nfs lockd sunrpc serpent xcbc b43 mac80211 cfg80211 rfkill bcma Pid: 15325, comm: find Not tainted 3.1.0-rc10-wl #281 Dell Inc. MXC061 /0MG532 EIP: 0060:[<c108a788>] EFLAGS: 00010206 CPU: 0 EIP is at __dentry_open.isra.16+0x12c/0x1ed EAX: 00000000 EBX: c5c80480 ECX: 00000000 EDX: 00000000 ESI: c003fd0c EDI: 00000000 EBP: c3c9be58 ESP: c3c9be40 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 Process find (pid: 15325, ti=c3c9a000 task=f4a73390 task.ti=c3c9a000) Stack: cef74480 f62a2d80 c3c9beec c3c9beec cef74480 c5c80480 c3c9be70 c108b309 00000000 c3c9beec 00000000 00000000 c3c9bea4 c10950fe 00000000 00000001 c003fd0c 00000024 c1093dad cef74400 00000000 00038900 c3c9beec 0000000b Call Trace: [<c108b309>] nameidata_to_filp+0x33/0x3d [<c10950fe>] do_last.isra.49+0x3dc/0x4c3 [<c1093dad>] ? path_init+0x20d/0x249 [<c10952ab>] path_openat+0xa1/0x254 [<c11109b7>] ? copy_to_user+0x3f/0x46 [<c109549e>] do_filp_open+0x26/0x67 [<c111080b>] ? might_fault+0x8/0xa [<c109cfc3>] ? alloc_fd+0x4e/0xba [<c1092ee7>] ? getname_flags+0x6d/0xad [<c108b36d>] do_sys_open+0x5a/0xe5 [<c108b43e>] sys_openat+0x1f/0x25 [<c1314a90>] sysenter_do_call+0x12/0x26 Code: 85 ff 89 43 10 75 0b 85 c0 74 14 8b 78 2c 85 ff 74 0d 89 da 89 f0 ff d7 85 c0 89 45 f0 75 4d 81 63 20 3f fc ff ff 8b 43 7c 8b 00 <8b> 50 18 8d 43 4c e8 5d 10 fe ff f6 43 21 40 0f 84 a2 00 00 00 EIP: [<c108a788>] __dentry_open.isra.16+0x12c/0x1ed SS:ESP 0068:c3c9be40 CR2: 0000000000000018 ---[ end trace 34290958b6905e19 ]--- -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
