On Mon 23-05-22 13:34:23, Dmitry Vyukov wrote: > +Aleksandr added this feature recently. > > Console output will contain strace output for reproducers (when the > run under strace reproduced the same kernel crash as w/o strace). > > Here is a recently reported bug: > https://syzkaller.appspot.com/bug?id=53c9bd2ca0e16936e45ff1333a22b838d91da0a2 > > "log" link for the reproducer crash shows: > https://syzkaller.appspot.com/text?tag=CrashLog&x=14f791aef00000 > ... > > [ 26.757008][ T3179] 8021q: adding VLAN 0 to HW filter on device bond0 > [ 26.766878][ T3179] eql: remember to turn off Van-Jacobson > compression on your slave devices > Starting sshd: OK > Warning: Permanently added '10.128.0.110' (ECDSA) to the list of known hosts. > execve("./syz-executor1865045535", ["./syz-executor1865045535"], > 0x7ffdc91edf40 /* 10 vars */) = 0 > brk(NULL) = 0x555557248000 > brk(0x555557248c40) = 0x555557248c40 > arch_prctl(ARCH_SET_FS, 0x555557248300) = 0 > uname({sysname="Linux", nodename="syzkaller", ...}) = 0 > readlink("/proc/self/exe", "/root/syz-executor1865045535", 4096) = 28 > brk(0x555557269c40) = 0x555557269c40 > brk(0x55555726a000) = 0x55555726a000 > mprotect(0x7f37f8ecc000, 16384, PROT_READ) = 0 > mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, > -1, 0) = 0x1ffff000 > mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, > MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 > mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, > -1, 0) = 0x21000000 > socket(AF_NETLINK, SOCK_RAW, NETLINK_NETFILTER) = 3 > syzkaller login: [ 58.834018][ T3600] ------------[ cut here ]------------ > [ 58.839772][ T3600] WARNING: CPU: 0 PID: 3600 at > net/netfilter/nfnetlink.c:703 nfnetlink_unbind+0x357/0x3b0 > [ 58.849856][ T3600] Modules linked in: > ... > > > The same is available in the report emails, e.g.: > https://lore.kernel.org/all/000000000000ff239c05df391402@xxxxxxxxxx/ > ... > console+strace: https://syzkaller.appspot.com/x/log.txt?x=14f791aef00000 > ... Wow, cool! Thanks for adding that! This was often one of the first steps I did when looking into what the problem could be so it saves me some manual work :) Honza -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR
