From: Zubin Mithra <zsm@chromium.org>
To: stable@vger.kernel.org
Cc: gregkh@linuxfoundation.org, groeck@chromium.org,
davej@codemonkey.org.uk, daniel@iogearbox.net
Subject: 6ae81ced3788 ("af_packet: tone down the Tx-ring unsupported spew.")
Date: Thu, 12 Sep 2019 12:25:10 -0700 [thread overview]
Message-ID: <20190912192508.GA106326@google.com> (raw)
Hello,
Syzkaller has triggered a WARNING in packet_set_ring when fuzzing a 4.4 kernel with the following stacktrace.
Call Trace:
__dump_stack lib/dump_stack.c:15 [inline]
dump_stack+0xc1/0x124 lib/dump_stack.c:51
panic+0x1a7/0x351 kernel/panic.c:115
warn_slowpath_common+0x12a/0x140 kernel/panic.c:463
warn_slowpath_fmt+0xb0/0xe0 kernel/panic.c:479
packet_set_ring+0x13ed/0x19c0 net/packet/af_packet.c:4104
packet_setsockopt+0x53e/0x21d0 net/packet/af_packet.c:3578
SYSC_setsockopt net/socket.c:1766 [inline]
SyS_setsockopt+0x15d/0x240 net/socket.c:1745
entry_SYSCALL_64_fastpath+0x12/0x72
Could the following patch be applied in v4.4.y? It is present in v4.9.y. Applying this patch could
allow the fuzzer to explore more codepaths.
* 6ae81ced3788 ("af_packet: tone down the Tx-ring unsupported spew.")
Thanks,
- Zubin
next reply other threads:[~2019-09-12 19:25 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-12 19:25 Zubin Mithra [this message]
2019-09-12 22:59 ` 6ae81ced3788 ("af_packet: tone down the Tx-ring unsupported spew.") Sasha Levin
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