On 10/26/21 7:59 PM, Herbert Xu wrote:
On Tue, Oct 26, 2021 at 09:33:19AM -0700, Guenter Roeck wrote:
I can not explain it, but this patch causes a crash with one of my boot
tests (riscv32 with riscv32 virt machine and e1000 network adapter):
[ 9.948557] e1000 0000:00:01.0: enabling device (0000 -> 0003)
[ 9.968578] Unable to handle kernel paging request at virtual address 9e000000
[ 9.969207] Oops [#1]
[ 9.969325] Modules linked in:
[ 9.969619] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.15.0-rc6-next-20211025 #1
[ 9.969983] Hardware name: riscv-virtio,qemu (DT)
[ 9.970262] epc : e1000_io_write+0x10/0x1c
[ 9.970487] ra : e1000_reset_hw+0xfa/0x312
[ 9.970639] epc : c07b3a44 ra : c07b5e4a sp : c258dcf0
[ 9.970792] gp : c1d6cfa0 tp : c25b0040 t0 : c1f05b3c
[ 9.970941] t1 : 04d6d7d4 t2 : 00001fff s0 : c258dd00
[ 9.971091] s1 : c36a9990 a0 : c36a9990 a1 : 9e000000
[ 9.971240] a2 : 00000000 a3 : 04000000 a4 : 00000002
[ 9.971389] a5 : 9e000000 a6 : 00000000 a7 : 00006000
[ 9.971539] s2 : c101b3ec s3 : c23aceb0 s4 : 04140240
[ 9.971692] s5 : 00000000 s6 : c14a3550 s7 : c1d72000
[ 9.971872] s8 : 00000000 s9 : c36a9000 s10: 00000000
[ 9.972037] s11: 00000000 t3 : cb75ee6c t4 : 0000000c
[ 9.972200] t5 : 000021cb t6 : c1f017a0
[ 9.972336] status: 00000120 badaddr: 9e000000 cause: 0000000f
[ 9.972570] [<c07b3a44>] e1000_io_write+0x10/0x1c
[ 9.973382] ---[ end trace 49388ec34793549e ]---
[ 9.973873] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
Bisect log is attached. Reverting this patch fixes the problem. The problem
is always seen with this patch applied, and is never seen with this patch
reverted.
Any idea what might be going on, and how to debug the problem ?
Could you please send me the complete boot log, as well as the
kernel config file please?
You should find everything you should need to reproduce the problem,
including a full crash log, at http://server.roeck-us.net/qemu/riscv32/.
Hope this helps,
Guenter
