Messages in this thread | | | Date | Sun, 13 May 2007 15:47:18 -0700 | From | Andrew Morton <> | Subject | Re: [Bug 8473] New: Oops: 0010 [1] SMP |
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On Sun, 13 May 2007 14:02:50 -0700 bugme-daemon@bugzilla.kernel.org wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=8473
Please follow up via emailed reply-to-all.
In fact, please report -mm bugs via email. bugzilla is more suited to longer-term problems, and -mm bugs are super-short-term, we hope.
> Summary: Oops: 0010 [1] SMP > Kernel Version: 2.6.21-mm2 > Status: NEW > Severity: high > Owner: akpm@osdl.org > Submitter: Nicolas.Mailhot@LaPoste.net > > > Most recent kernel where this bug did *NOT* occur: 2.6.21-mm1 (though I didn't > test it that long) > Distribution: Fedora Devel > Hardware Environment: AMD C2 on CK804 > Software Environment: Normal workload (building a small package) > Problem Description: > > Steps to reproduce: > May 13 22:59:43 rousalka kernel: Unable to handle kernel NULL pointer > dereference at 0000000000000000 RIP: > May 13 22:59:43 rousalka kernel: [<0000000000000000>] > May 13 22:59:43 rousalka kernel: PGD bf1a067 PUD f295067 PMD 0 > May 13 22:59:43 rousalka kernel: Oops: 0010 [1] SMP > May 13 22:59:43 rousalka kernel: CPU 0 > May 13 22:59:43 rousalka kernel: Pid: 8758, comm: bash Not tainted > 2.6.21-9.mm2.fc7.nim #1 > May 13 22:59:43 rousalka kernel: RIP: 0010:[<0000000000000000>] > [<0000000000000000>] > May 13 22:59:43 rousalka kernel: RSP: 0018:ffff81000ffedee0 EFLAGS: 00010296 > May 13 22:59:43 rousalka kernel: RAX: ffffffff804426a0 RBX: ffff81000abe6a80 > RCX: 00007fff565bbdc4 > May 13 22:59:43 rousalka kernel: RDX: 0000000000005410 RSI: ffff81000abe6a80 > RDI: ffff810009cc6fa0 > May 13 22:59:43 rousalka kernel: RBP: 00007fff565bbdc4 R08: 0000000000000000 > R09: 00000000009033a4 > May 13 22:59:43 rousalka kernel: R10: 0000000000000008 R11: 0000000000000246 > R12: 0000000000005410 > May 13 22:59:43 rousalka kernel: R13: 00000000000000ff R14: 00000000000000ff > R15: 0000000000000000 > May 13 22:59:43 rousalka kernel: FS: 00002b2d544faf40(0000) > GS:ffffffff8056b000(0000) knlGS:0000000000000000 > May 13 22:59:43 rousalka kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > May 13 22:59:43 rousalka kernel: CR2: 0000000000000000 CR3: 000000000bdf4000 > CR4: 00000000000006e0 > May 13 22:59:43 rousalka kernel: Process bash (pid: 8758, threadinfo > ffff81000ffec000, task ffff81000bc82ac0) > May 13 22:59:43 rousalka kernel: Stack: ffffffff8028545d ffff81000abe6a80 > 00007fff565bbdc4 00007fff565bbdc4 > May 13 22:59:43 rousalka kernel: ffffffff802856ca 0000000000005410 > 00000000000000ff ffff81000abe6a80 > May 13 22:59:43 rousalka kernel: 0000000000000000 00007fff565bbdc4 > 0000000000005410 00000000000000ff > May 13 22:59:43 rousalka kernel: Call Trace: > May 13 22:59:43 rousalka kernel: [<ffffffff8028545d>] do_ioctl+0x55/0x6b > May 13 22:59:43 rousalka kernel: [<ffffffff802856ca>] vfs_ioctl+0x257/0x270 > May 13 22:59:43 rousalka kernel: [<ffffffff8028573c>] sys_ioctl+0x59/0x79 > May 13 22:59:43 rousalka kernel: [<ffffffff8020955c>] tracesys+0xdc/0xe1 > May 13 22:59:43 rousalka kernel: > May 13 22:59:43 rousalka kernel: INFO: lockdep is turned off. > May 13 22:59:43 rousalka kernel: > May 13 22:59:43 rousalka kernel: Code: Bad RIP value. > May 13 22:59:43 rousalka kernel: RIP [<0000000000000000>] > May 13 22:59:43 rousalka kernel: RSP <ffff81000ffedee0> > May 13 22:59:43 rousalka kernel: CR2: 0000000000000000
Anything you can do to make that wordwrapping go away for ever would be great, thanks.
I don't know what would have caused this. do_ioctl() did a jump-to-zero, but it has code in there to explicitly test for null pointers.
Perhaps some weird race, although I find it hard to imagine how we could have such a race in any ioctl which bash is likely to be calling.
Is it repeatable at all? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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