[uml-devel] syscall failed

[uml-devel] syscall failed

[Antoine Martin]

FYI: (skas4 host)

[43492659.840000] syscall_stub_done : ret = -12, offset = 548682067984,
data = 000000007f115010
[43492659.840000] syscall_stub_done : syscall 9 failed, return value =
0xfffffff4, expected return value = 0x47a0000
[43492659.840000]     syscall parameters: 0x47a0000 0x1000 0x7 0x11 0x3
0xc4c9000
[43492659.840000] Failed to flush page for address 0x47a0000
[43531234.700000] syscall_stub_done : ret = -12, offset = 548682067984,
data = 000000007f6a8010
[43531234.700000] syscall_stub_done : syscall 9 failed, return value =
0xfffffff4, expected return value = 0x4e9e2000
[43531234.700000]     syscall parameters: 0x4e9e2000 0x1000 0x7 0x11 0x3
0x1db9c000
[43531234.700000] Failed to flush page for address 0x4e9e2000
[43580225.490000] syscall_stub_done : ret = -12, offset = 548682067984,
data = 000000007f7ca010
[43580225.490000] syscall_stub_done : syscall 9 failed, return value =
0xfffffff4, expected return value = 0x6178000
[43580225.490000]     syscall parameters: 0x6178000 0x1000 0x7 0x11 0x3
0x8d02000
[43580225.490000] Failed to flush page for address 0x6178000
[43604789.740000] line_write_room: tty0: no room left in buffer
[43607449.300000] syscall_stub_done : ret = -12, offset = 548682067984,
data = 000000007f0d2010
[43607449.300000] syscall_stub_done : syscall 9 failed, return value =
0xfffffff4, expected return value = 0x514b4000
[43607449.300000]     syscall parameters: 0x514b4000 0x1000 0x7 0x11 0x3
0x1157d000
[43607449.300000] Failed to flush page for address 0x514b4000

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Re: [uml-devel] syscall failed

[Jeff Dike]

On Fri, Mar 28, 2008 at 10:44:08PM +0000, Antoine Martin wrote:
> FYI: (skas4 host)

Woo - a skas4 bug report!

However

> [43492659.840000] syscall_stub_done : ret = -12, offset = 548682067984,
> data = 000000007f115010
> [43492659.840000] syscall_stub_done : syscall 9 failed, return value =
> 0xfffffff4, expected return value = 0x47a0000

is just mmap returning -ENOMEM, which we've seen elsewhere with large
UML processes hitting the host's /proc/sys/vm/max_map_count limit.
Have you checked that?

			Jeff

-- 
Work email - jdike at linux dot intel dot com

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Re: [uml-devel] syscall failed

[Stian Skjelstad]

If this is a common issue/problem, perhaps an informativ error-message
can be written when this occure, hinting the user to a possible
solution.

Stian

On Mon, 2008-03-31 at 10:50 -0400, Jeff Dike wrote:
> On Fri, Mar 28, 2008 at 10:44:08PM +0000, Antoine Martin wrote:
> > [43492659.840000] syscall_stub_done : ret = -12, offset = 548682067984,
> > data = 000000007f115010
> > [43492659.840000] syscall_stub_done : syscall 9 failed, return value =
> > 0xfffffff4, expected return value = 0x47a0000
> 
> is just mmap returning -ENOMEM, which we've seen elsewhere with large
> UML processes hitting the host's /proc/sys/vm/max_map_count limit.
> Have you checked that?



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