Re: [PATCH v2] bpf: fix check of allowed specifiers in bpf_trace_printk

2018-11-23 Thread Daniel Borkmann
On 11/23/2018 05:43 PM, Martynas Pumputis wrote: > A format string consisting of "%p" or "%s" followed by an invalid > specifier (e.g. "%p%\n" or "%s%") could pass the check which > would make format_decode (lib/vsprintf.c) to warn. > > Reported-by: syzbot+1ec5c5ec949c4adaa...@syzkaller.appspotmai

[PATCH v2] bpf: fix check of allowed specifiers in bpf_trace_printk

2018-11-23 Thread Martynas Pumputis
A format string consisting of "%p" or "%s" followed by an invalid specifier (e.g. "%p%\n" or "%s%") could pass the check which would make format_decode (lib/vsprintf.c) to warn. Reported-by: syzbot+1ec5c5ec949c4adaa...@syzkaller.appspotmail.com Signed-off-by: Martynas Pumputis --- kernel/trace/b