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| author | Andrei Vagin <avagin@google.com> | 2020-04-08 23:02:09 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-04-08 23:03:12 -0700 |
| commit | a10389e783aab5f530641394ef44c8a1dede9372 (patch) | |
| tree | 6d3f73f65ed91f001e11a3d6f135943d4776498c /pkg/sentry/syscalls/linux | |
| parent | 7297fd7238e17803e073fb5a5ef85edf992bdf6b (diff) | |
splice: cap splice calls to MAX_RW_COUNT
The Linux does the same.
Reported-by: syzbot+e81716e8956e92e9d56b@syzkaller.appspotmail.com
PiperOrigin-RevId: 305625439
Diffstat (limited to 'pkg/sentry/syscalls/linux')
| -rw-r--r-- | pkg/sentry/syscalls/linux/sys_splice.go | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/pkg/sentry/syscalls/linux/sys_splice.go b/pkg/sentry/syscalls/linux/sys_splice.go index fd642834b..fbc6cf15f 100644 --- a/pkg/sentry/syscalls/linux/sys_splice.go +++ b/pkg/sentry/syscalls/linux/sys_splice.go @@ -29,6 +29,10 @@ func doSplice(t *kernel.Task, outFile, inFile *fs.File, opts fs.SpliceOpts, nonB return 0, syserror.EINVAL } + if opts.Length > int64(kernel.MAX_RW_COUNT) { + opts.Length = int64(kernel.MAX_RW_COUNT) + } + var ( total int64 n int64 |