On Wed, Mar 10, 2021 at 7:28 PM syzbot <syzbot+c23c5421600e9b454849@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > Hello, > > syzbot found the following issue on: > > HEAD commit: 0d7588ab riscv: process: Fix no prototype for arch_dup_tas.. > git tree: git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes > console output: https://syzkaller.appspot.com/x/log.txt?x=122c343ad00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=e3c595255fb2d136 > dashboard link: https://syzkaller.appspot.com/bug?extid=c23c5421600e9b454849 > userspace arch: riscv64 > > Unfortunately, I don't have any reproducer for this issue yet. > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+c23c5421600e9b454849@xxxxxxxxxxxxxxxxxxxxxxxxx +riscv maintainers Another case of put_user crashing. > Unable to handle kernel access to user memory without uaccess routines at virtual address 0000000020000300 > Oops [#1] > Modules linked in: > CPU: 1 PID: 4488 Comm: syz-executor.0 Not tainted 5.12.0-rc2-syzkaller-00467-g0d7588ab9ef9 #0 > Hardware name: riscv-virtio,qemu (DT) > epc : sock_ioctl+0x424/0x6ac net/socket.c:1124 > ra : sock_ioctl+0x424/0x6ac net/socket.c:1124 > epc : ffffffe002aeeb3e ra : ffffffe002aeeb3e sp : ffffffe023867da0 > gp : ffffffe005d25378 tp : ffffffe007e116c0 t0 : 0000000000000000 > t1 : 0000000000000001 t2 : 0000003fb8035e44 s0 : ffffffe023867e30 > s1 : 0000000000040000 a0 : 0000000000000000 a1 : 0000000000000007 > a2 : 1ffffffc00fc22d8 a3 : ffffffe003bc1d02 a4 : 0000000000000000 > a5 : 0000000000000000 a6 : 0000000000f00000 a7 : ffffffe000082eba > s2 : 0000000000000000 s3 : 0000000000008902 s4 : 0000000020000300 > s5 : ffffffe005d2b0d0 s6 : ffffffe010facfc0 s7 : ffffffe008e00000 > s8 : 0000000000008903 s9 : ffffffe010fad080 s10: 0000000000000000 > s11: 0000000000020000 t3 : 982de389919f6300 t4 : ffffffc401175688 > t5 : ffffffc401175691 t6 : 0000000000000007 > status: 0000000000000120 badaddr: 0000000020000300 cause: 000000000000000f > Call Trace: > [<ffffffe002aeeb3e>] sock_ioctl+0x424/0x6ac net/socket.c:1124 > [<ffffffe0003fdb6a>] vfs_ioctl fs/ioctl.c:48 [inline] > [<ffffffe0003fdb6a>] __do_sys_ioctl fs/ioctl.c:753 [inline] > [<ffffffe0003fdb6a>] sys_ioctl+0x5c2/0xd56 fs/ioctl.c:739 > [<ffffffe000005562>] ret_from_syscall+0x0/0x2 > Dumping ftrace buffer: > (ftrace buffer empty) > ---[ end trace a5f91e70f37b907b ]--- > > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > > -- > You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@xxxxxxxxxxxxxxxx. > To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/00000000000096cdaa05bd32d46f%40google.com.
