https://github.com/torvalds/linux
We had a recent fix to fix the release of pagecache pages when cifs_writev_requeue writes fail. Unfortunately, it releases the page before trying to unlock it. At that point, the page might be gone by the time the unlock comes in. Unlock the page first before checking the value of "rc", and only then end writeback and release the pages. The page lock isn't required for any of those operations so this should be safe. Reported-by: Anton Altaparmakov <aia21@cam.ac.uk> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
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cifs: don't try to unlock pagecache page after releasing it
File | Mode | Size |
---|---|---|
common | ||
dvb-core | ||
dvb-frontends | ||
firewire | ||
i2c | ||
mmc | ||
parport | ||
pci | ||
platform | ||
radio | ||
rc | ||
tuners | ||
usb | ||
v4l2-core | ||
Kconfig | -rw-r--r-- | 5.3 KB |
Makefile | -rw-r--r-- | 731 bytes |
media-device.c | -rw-r--r-- | 9.5 KB |
media-devnode.c | -rw-r--r-- | 8.4 KB |
media-entity.c | -rw-r--r-- | 15.7 KB |
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