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kdump: print mmap() offset in hex

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When mmap() fails, printing a large decimal number is mostly
meaningless - it's not obvious what it means.  Printing a hex number
is more obvious, because we can see whether it's over 32-bit, or not
page aligned.

Reviewed-by: Pratyush Anand <panand@redhat.com>
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Simon Horman <horms@verge.net.au>
This commit is contained in:
Russell King
2016-06-06 17:59:13 +01:00
committed by Simon Horman
parent cb9056e009
commit 1c28b55604
1 changed files with 1 additions and 1 deletions
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kdump/kdump.c
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@@ -37,7 +37,7 @@ static void *map_addr(int fd, unsigned long size, off_t offset)
result = mmap(0, len, PROT_READ, MAP_SHARED, fd, offset - map_offset);
if (result == MAP_FAILED) {
fprintf(stderr, "Cannot mmap " DEV_MEM " offset: %llu size: %lu: %s\n",
fprintf(stderr, "Cannot mmap " DEV_MEM " offset: %#llx size: %lu: %s\n",
(unsigned long long)offset, size, strerror(errno));
exit(5);
}