Messages in this thread | | | Subject | Re: [PATCH] twist: allow converting pr_devel()/pr_debug() into printk(KERN_DEBUG) | From | Joe Perches <> | Date | Sun, 24 May 2020 10:38:02 -0700 |
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On Sun, 2020-05-24 at 23:50 +0900, Tetsuo Handa wrote: > syzbot found a NULL pointer dereference bug inside mptcp_recvmsg() due to > ssock == NULL, but this bug manifested inside selinux_socket_recvmsg() > because pr_debug() was no-op [1]. > > pr_debug("fallback-read subflow=%p", > mptcp_subflow_ctx(ssock->sk)); > copied = sock_recvmsg(ssock, msg, flags);
> Since console loglevel used by syzkaller will not print KERN_DEBUG > messages to consoles, always evaluating pr_devel()/pr_debug() messages > will not cause too much console output. Thus, let's allow fuzzers to > always evaluate pr_devel()/pr_debug() messages.
While I think this is rather unnecessary, what about dev_dbg/netdev_dbg/netif_dbg et al ?
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