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| author | Michael Brown | 2017-03-21 13:17:18 +0100 |
|---|---|---|
| committer | Michael Brown | 2017-03-21 13:17:18 +0100 |
| commit | d25e7daf47efbefa83bbf9c07e044cdf747c7fda (patch) | |
| tree | 8419876c5cbc461efe0328506a2c9fb62ced3b32 /src | |
| parent | [crypto] Free correct pointer on the error path (diff) | |
| download | ipxe-d25e7daf47efbefa83bbf9c07e044cdf747c7fda.tar.gz ipxe-d25e7daf47efbefa83bbf9c07e044cdf747c7fda.tar.xz ipxe-d25e7daf47efbefa83bbf9c07e044cdf747c7fda.zip | |
[librm] Fail gracefully if asked to ioremap() a zero length
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/arch/x86/transitions/librm_mgmt.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/arch/x86/transitions/librm_mgmt.c b/src/arch/x86/transitions/librm_mgmt.c index 8776f2854..8144e7671 100644 --- a/src/arch/x86/transitions/librm_mgmt.c +++ b/src/arch/x86/transitions/librm_mgmt.c @@ -197,7 +197,8 @@ static void * ioremap_pages ( unsigned long bus_addr, size_t len ) { DBGC ( &io_pages, "IO mapping %08lx+%zx\n", bus_addr, len ); /* Sanity check */ - assert ( len != 0 ); + if ( ! len ) + return NULL; /* Round down start address to a page boundary */ start = ( bus_addr & ~( IO_PAGE_SIZE - 1 ) ); |