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| author | Hans Petter Selasky <hselasky@FreeBSD.org> | 2022-03-11 16:39:44 +0000 |
|---|---|---|
| committer | Hans Petter Selasky <hselasky@FreeBSD.org> | 2022-03-17 09:55:12 +0000 |
| commit | d67b2c96153fcef344648d907893b50e30817a38 (patch) | |
| tree | ed78969d0f4d2a2a6ca267582a7ebb009f65fcd6 | |
| parent | a16772a8111095a0358be9c046d321988f2696c2 (diff) | |
| download | src-d67b2c96153fcef344648d907893b50e30817a38.tar.gz src-d67b2c96153fcef344648d907893b50e30817a38.zip | |
lindebugfs: Make single_release() NULL safe.
Sponsored by: NVIDIA Networking
(cherry picked from commit a23e475c48da7a3751ffdc689be01d514ea2857c)
| -rw-r--r-- | sys/compat/linuxkpi/common/src/linux_seq_file.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/compat/linuxkpi/common/src/linux_seq_file.c b/sys/compat/linuxkpi/common/src/linux_seq_file.c index 6f4f1a368c4a..ed23bf8d010f 100644 --- a/sys/compat/linuxkpi/common/src/linux_seq_file.c +++ b/sys/compat/linuxkpi/common/src/linux_seq_file.c @@ -147,9 +147,15 @@ seq_release(struct inode *inode __unused, struct linux_file *file) int single_release(struct vnode *v, struct linux_file *f) { - const struct seq_operations *op = ((struct seq_file *)f->private_data)->op; + const struct seq_operations *op; + struct seq_file *m; int rc; + /* be NULL safe */ + if ((m = f->private_data) == NULL) + return (0); + + op = m->op; rc = seq_release(v, f); free(__DECONST(void *, op), M_LSEQ); return (rc); |