* 6ae81ced3788 ("af_packet: tone down the Tx-ring unsupported spew.")
@ 2019-09-12 19:25 Zubin Mithra
2019-09-12 22:59 ` Sasha Levin
0 siblings, 1 reply; 2+ messages in thread
From: Zubin Mithra @ 2019-09-12 19:25 UTC (permalink / raw)
To: stable; +Cc: gregkh, groeck, davej, daniel
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
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: 6ae81ced3788 ("af_packet: tone down the Tx-ring unsupported spew.")
2019-09-12 19:25 6ae81ced3788 ("af_packet: tone down the Tx-ring unsupported spew.") Zubin Mithra
@ 2019-09-12 22:59 ` Sasha Levin
0 siblings, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2019-09-12 22:59 UTC (permalink / raw)
To: Zubin Mithra; +Cc: stable, gregkh, groeck, davej, daniel
On Thu, Sep 12, 2019 at 12:25:10PM -0700, Zubin Mithra wrote:
>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.")
Queued up for 4.4, thank you.
--
Thanks,
Sasha
^ permalink raw reply [flat|nested] 2+ messages in thread
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