On Mon, Feb 17, 2014 at 6:31 PM, Catalin Marinas catalin.marinas@arm.com wrote:
On Mon, Feb 17, 2014 at 12:21:45PM +0000, Vijay Kilari wrote:
If it is ok, can you please merge these patches
I was about to merge them but I wanted to try first. Enabling kgd tests at boot time, I get plenty of failures as below. Have you successfully run the kgdb tests?
I re-tested v9 version patches with our internal arm64 simulator and I don't see these warnings. Also I tested with 3.13 kernel from linaro with v8 foundation model and no errors are seen (logs below).
kgdb: Registered I/O driver kgdbts. kgdbts:RUN plant and detach test kgdbts:RUN sw breakpoint test kgdbts:RUN bad memory access test kgdbts:RUN singlestep test 1000 iterations kgdbts:RUN singlestep [0/1000] kgdbts:RUN singlestep [100/1000] kgdbts:RUN singlestep [200/1000] kgdbts:RUN singlestep [300/1000] kgdbts:RUN singlestep [400/1000] kgdbts:RUN singlestep [500/1000] kgdbts:RUN singlestep [600/1000] kgdbts:RUN singlestep [700/1000] kgdbts:RUN singlestep [800/1000] kgdbts:RUN singlestep [900/1000] kgdbts:RUN do_fork for 100 breakpoints smc91x 1a000000.ethernet (unregistered net_device): smc91x: IOADDR ffffff800006a000 doesn't match configuration (300). ..... EXT4-fs (vda2): re-mounted. Opts: (null) random: dd urandom read with 13 bits of entropy available kgdb: Unregistered I/O driver kgdbts, debugger disabled. smc91x 1a000000.ethernet eth0: link up, 10Mbps, half-duplex, lpa 0x0000 rpcbind: cannot create socket for udp6 rpcbind: cannot create socket for tcp6
Last login: Wed Feb 5 09:32:00 UTC 2014 on tty1 root@genericarmv8:~# uname -a Linux genericarmv8 3.13.0+ #2 SMP PREEMPT Tue Feb 18 15:53:10 IST 2014 aarch64 GNU/Linux root@genericarmv8:~#
NOTE: Please check if you have applied all the latest version patches
kgdbts:RUN singlestep [800/1000] kgdbts: ERROR PUT: end of test buffer on 'singlestep_breakpoint_test' line 0 expected S0* got $T05thread:01;#07 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 1 at /work/Linux/linux-2.6-aarch64/drivers/misc/kgdbts.c:815 run_simple_test+0x28c/0x2d8() Modules linked in: CPU: 1 PID: 1 Comm: swapper/0 Tainted: G W 3.14.0-rc3+ #300 Call trace: [<ffffffc000087dbc>] dump_backtrace+0x0/0x12c [<ffffffc000087efc>] show_stack+0x14/0x1c [<ffffffc00044582c>] dump_stack+0x78/0xc4 [<ffffffc00009552c>] warn_slowpath_common+0x88/0xac [<ffffffc000095618>] warn_slowpath_null+0x18/0x20 [<ffffffc0002f5cb0>] run_simple_test+0x28c/0x2d8 [<ffffffc0002f5268>] kgdbts_put_char+0x24/0x2c [<ffffffc0000fcdf8>] put_packet+0xa0/0x118 [<ffffffc0000fe0e0>] gdb_serial_stub+0xb4c/0xd20 [<ffffffc0000fc434>] kgdb_cpu_enter+0x3bc/0x5f4 [<ffffffc0000fc934>] kgdb_handle_exception+0x18c/0x1f0 [<ffffffc000090d50>] kgdb_compiled_brk_fn+0x2c/0x38 [<ffffffc000082158>] brk_handler+0x8c/0xc4 [<ffffffc0000811ec>] do_debug_exception+0x40/0xac Exception stack(0xffffffc876cbbb80 to 0xffffffc876cbbca0) bb80: 006a0000 ffffffc0 000003e8 00000000 76cbbd40 ffffffc8 000fb9b8 ffffffc0 bba0: 000002c0 00000000 000d18cc ffffffc0 76cbbc10 ffffffc8 000d1c40 ffffffc0 bbc0: 00641000 ffffffc0 00000001 00000000 00610d40 ffffffc0 00000006 00000000 bbe0: 00000240 00000000 00000020 00000000 00000000 00000000 00000000 00000000 bc00: 76cbbc10 ffffffc8 00000021 00000000 76cbbcb0 ffffffc8 0044337c ffffffc0 bc20: 00648e58 ffffffc0 00000001 00000000 00000000 00000000 00648e60 ffffffc0 bc40: 000070e1 00000000 00000006 00000000 00000030 00000000 006431b0 ffffffc0 bc60: 000070e0 00000000 00000006 00000000 0000006c 00000000 00007005 00000000 bc80: 00000040 00000000 00003648 00000000 00000000 00000000 00000006 00000000 [<ffffffc000083cb4>] el1_dbg+0x18/0x68 [<ffffffc0005d010c>] init_kgdbts+0x24/0x2c [<ffffffc000081430>] do_one_initcall+0xdc/0x124 [<ffffffc0005b8930>] kernel_init_freeable+0x138/0x1d8 [<ffffffc000440850>] kernel_init+0x10/0xd4
-- Catalin