From: Andreas Steinmetz <ast@domdv.de>
To: linux-fsdevel@vger.kernel.org
Subject: [PATCH] Fix cuse ENOMEM ioctl breakage in 4.20.0
Date: Sun, 30 Dec 2018 10:43:47 +0100 [thread overview]
Message-ID: <1546163027.3036.2.camel@domdv.de> (raw)
[-- Attachment #1: Type: text/plain, Size: 295 bytes --]
This must have happened somewhen after 4.17.2 and I did find it in
4.20.0:
cuse_process_init_reply() doesn't initialize fc->max_pages and thus all
cuse bases ioctls fail with ENOMEM.
Patch which fixes this is attached.
--
Andreas Steinmetz SPAMmers use robotrap@domdv.de
[-- Attachment #2: cuse-4.20.0.patch --]
[-- Type: text/x-patch, Size: 424 bytes --]
--- linux.orig/fs/fuse/cuse.c 2018-12-30 09:52:47.479717022 +0100
+++ linux/fuse/cuse.c 2018-12-30 09:53:22.944128852 +0100
@@ -324,6 +324,7 @@
fc->minor = arg->minor;
fc->max_read = max_t(unsigned, arg->max_read, 4096);
fc->max_write = max_t(unsigned, arg->max_write, 4096);
+ fc->max_pages = FUSE_DEFAULT_MAX_PAGES_PER_REQ;
/* parse init reply */
cc->unrestricted_ioctl = arg->flags & CUSE_UNRESTRICTED_IOCTL;
next reply other threads:[~2018-12-30 9:52 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-30 9:43 Andreas Steinmetz [this message]
2019-01-14 9:58 ` [PATCH] Fix cuse ENOMEM ioctl breakage in 4.20.0 Miklos Szeredi
[not found] ` <388f911ccba16dee350bb2534b67d601b44f3a92.camel@domdv.de>
2019-05-28 13:12 ` Miklos Szeredi
2019-08-02 8:15 ` Greg Kroah-Hartman
2019-08-02 19:44 ` Miklos Szeredi
2019-08-03 6:47 ` Greg Kroah-Hartman
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