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SubjectRe: Top kernel oopses/warnings for the week of May 30th 2008

* Hugh Dickins <hugh@veritas.com> wrote:

> Veering off at a tangent away from the oops: I was rather sobered to
> see all those traces of execve using kmap, I thought we were avoiding
> kmap like BKL in common paths these days (though it is convenient for
> symlinks). Would a patch something like that below, copying the
> filemap.c trick, be welcome?

FYI, i stuck this into -tip for testing and after some time i started
getting:

[ 8.540917] Freeing unused kernel memory: 304k freed
[ 12.368096] BUG: scheduling while atomic: ifup-eth/1820/0x10000001
[ 12.374144] Modules linked in:
[ 12.377175] Pid: 1820, comm: ifup-eth Not tainted 2.6.26-rc5-00029-ga252672-dirty #3490
[ 12.384031] [<c0131a39>] __schedule_bug+0x59/0x60
[ 12.388031] [<c06b1375>] schedule+0x465/0x8c0
[ 12.392031] [<c013eecf>] ? update_process_times+0x4f/0x60
[ 12.396031] [<c013b50f>] ? irq_exit+0x3f/0x70
[ 12.400451] [<c012164b>] ? smp_apic_timer_interrupt+0x5b/0x90
[ 12.406248] [<c0117038>] ? apic_timer_interrupt+0x28/0x30
[ 12.411702] [<c0131a58>] __cond_resched+0x18/0x30
[ 12.416466] [<c06b1838>] _cond_resched+0x28/0x30
[ 12.421141] [<c03720bb>] strnlen_user+0x2b/0x60
[ 12.425728] [<c018dd53>] copy_strings+0x63/0x210
[ 12.430403] [<c018f986>] do_execve+0x176/0x200
[ 12.434903] [<c0372007>] ? strncpy_from_user+0x37/0x60
[ 12.440031] [<c0114ade>] sys_execve+0x2e/0x60
[ 12.444447] [<c01165ae>] sysenter_past_esp+0x6a/0x90
[ 12.449469] =======================
[ 12.736676] eth1: link down
[ 12.736919] ADDRCONF(NETDEV_UP): eth1: link is not ready

it would occur about every 10 bootups with the same config. Bisection
led me to your patch.

Ingo


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