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| author | Laura Abbott <labbott@redhat.com> | 2018-05-14 14:35:09 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-15 09:31:39 +0200 |
| commit | 45ad559a29629cb1c64ee636563c69b71524f077 (patch) | |
| tree | 103c0abae56db3ca427fb9fd4425ee69695204cc /tools/perf/scripts/python | |
| parent | staging: mt7621-gpio: add SPDX identifier (diff) | |
| download | linux-45ad559a29629cb1c64ee636563c69b71524f077.tar.gz linux-45ad559a29629cb1c64ee636563c69b71524f077.zip | |
staging: android: ion: Switch to pr_warn_once in ion_buffer_destroy
Syzbot reported yet another warning with Ion:
WARNING: CPU: 0 PID: 1467 at drivers/staging/android/ion/ion.c:122
ion_buffer_destroy+0xd4/0x190 drivers/staging/android/ion/ion.c:122
Kernel panic - not syncing: panic_on_warn set ...
This is catching that a buffer was freed with an existing kernel mapping
still present. This can be easily be triggered from userspace by calling
DMA_BUF_SYNC_START without calling DMA_BUF_SYNC_END. Switch to a single
pr_warn_once to indicate the error without being disruptive.
Reported-by: syzbot+cd8bcd40cb049efa2770@syzkaller.appspotmail.com
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Laura Abbott <labbott@redhat.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions