diff options
| author | John Sperbeck <[email protected]> | 2024-03-23 08:29:34 -0700 |
|---|---|---|
| committer | Andrew Morton <[email protected]> | 2024-04-05 11:21:30 -0700 |
| commit | 8434f9aa6b7e77bc1459d75d1293c3f55bf4687b (patch) | |
| tree | 10d6b92d4413126e7b6d6292873a8aa7208a7312 | |
| parent | 65291dcfcf8936e1b23cfd7718fdfde7cfaf7706 (diff) | |
init: open output files from cpio unpacking with O_LARGEFILE
If a member of a cpio archive for an initrd or initrams is larger than
2Gb, we'll eventually fail to write to that file when we get to that
limit, unless O_LARGEFILE is set.
The problem can be seen with this recipe, assuming that BLK_DEV_RAM
is not configured:
cd /tmp
dd if=/dev/zero of=BIGFILE bs=1048576 count=2200
echo BIGFILE | cpio -o -H newc -R root:root > initrd.img
kexec -l /boot/vmlinuz-$(uname -r) --initrd=initrd.img --reuse-cmdline
kexec -e
The console will show 'Initramfs unpacking failed: write error'. With
the patch, the error is gone.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: John Sperbeck <[email protected]>
Cc: Jens Axboe <[email protected]>
Cc: Nick Desaulniers <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Randy Dunlap <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
| -rw-r--r-- | init/initramfs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/init/initramfs.c b/init/initramfs.c index 3127e0bf7bbd..a298a3854a80 100644 --- a/init/initramfs.c +++ b/init/initramfs.c @@ -367,7 +367,7 @@ static int __init do_name(void) if (S_ISREG(mode)) { int ml = maybe_link(); if (ml >= 0) { - int openflags = O_WRONLY|O_CREAT; + int openflags = O_WRONLY|O_CREAT|O_LARGEFILE; if (ml != 1) openflags |= O_TRUNC; wfile = filp_open(collected, openflags, mode); |