Date: Fri, 6 Sep 2019 18:08:14 +0000 (UTC) From: Alan Somers <asomers@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r351945 - stable/12/sys/fs/fuse Message-ID: <201909061808.x86I8Euc012971@repo.freebsd.org>
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Author: asomers Date: Fri Sep 6 18:08:13 2019 New Revision: 351945 URL: https://svnweb.freebsd.org/changeset/base/351945 Log: MFC r345986: fusefs: fix a panic on mount Don't page fault if the file descriptor provided with "-o fd" is invalid. This is a merge of r345419 from the projects/fuse2 branch. Reviewed by: ngie Tested by: Marek Zarychta <zarychtam@plan-b.pwste.edu.pl> Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D19836 Modified: stable/12/sys/fs/fuse/fuse_vfsops.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/fs/fuse/fuse_vfsops.c ============================================================================== --- stable/12/sys/fs/fuse/fuse_vfsops.c Fri Sep 6 18:02:58 2019 (r351944) +++ stable/12/sys/fs/fuse/fuse_vfsops.c Fri Sep 6 18:08:13 2019 (r351945) @@ -225,7 +225,7 @@ fuse_vfsop_mount(struct mount *mp) size_t len; struct cdev *fdev; - struct fuse_data *data; + struct fuse_data *data = NULL; struct thread *td; struct file *fp, *fptmp; char *fspec, *subtype; @@ -361,7 +361,7 @@ fuse_vfsop_mount(struct mount *mp) out: if (err) { FUSE_LOCK(); - if (data->mp == mp) { + if (data != NULL && data->mp == mp) { /* * Destroy device only if we acquired reference to * it
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