On 05/01/2014 02:33 PM, Richard Weinberger wrote: > Am 01.05.2014 12:29, schrieb Toralf Förster: >> On 05/01/2014 11:22 AM, Richard Weinberger wrote: >>> On Wed, Apr 30, 2014 at 8:19 PM, Toralf Förster <toralf.foerster@xxxxxx> wrote: >>>> -or- it uncovers a bug in kernel v3.15-rc3 for UML: >>> >>> UML most not panic. :) >>> >>> Do you have the trinity logs? >>> I'd like to know the syscalls parameters. >> I run trinity with "-C 2 -c mremap" within the guest, the logs are attached > > Can you please try the attached pre-patch? > It looks like the panic() in that code is an overreaction. > I'm currently looking deeper in the issue. > > BTW: If you hit "BUG: failure at mm/filemap.c:202/__delete_from_page_cache()!", > this is a known issue https://lkml.org/lkml/2014/4/15/577 > > Thanks, > //richard > That patch helps a lot, in the syslog I do now get : May 1 17:13:48 trinity kernel: Stub registers - May 1 17:13:48 trinity kernel: 0 - 100000 May 1 17:13:48 trinity kernel: 1 - 2000 May 1 17:13:48 trinity kernel: 2 - 0 May 1 17:13:48 trinity kernel: 3 - 0 May 1 17:13:48 trinity kernel: 4 - 0 May 1 17:13:48 trinity kernel: 5 - 0 May 1 17:13:48 trinity kernel: 6 - 0 May 1 17:13:48 trinity kernel: 7 - 7b May 1 17:13:48 trinity kernel: 8 - 7b May 1 17:13:48 trinity kernel: 9 - 0 May 1 17:13:48 trinity kernel: 10 - 33 May 1 17:13:48 trinity kernel: 11 - ffffffff May 1 17:13:48 trinity kernel: 12 - 1000c3 May 1 17:13:48 trinity kernel: 13 - 73 May 1 17:13:48 trinity kernel: 14 - 10206 May 1 17:13:48 trinity kernel: 15 - 101028 May 1 17:13:48 trinity kernel: 16 - 7b May 1 17:13:48 trinity kernel: wait_stub_done : failed to wait for SIGTRAP, pid = 14757, n = 14757, errno = 0, status = 0xb7f May 1 17:13:48 trinity kernel: do_syscall_stub : ret = 0, offset = 1052680, data = 47788008 May 1 17:13:48 trinity kernel: do_syscall_stub: syscall 91 failed, return value = 0x0, expected return value = 0x0 May 1 17:13:48 trinity kernel: syscall parameters: 0x100000 0x2000 0x0 0x0 0x0 0x0 May 1 17:13:48 trinity kernel: Registers - May 1 17:13:48 trinity kernel: 0 0x2c92 May 1 17:13:48 trinity kernel: 1 0x13 May 1 17:13:48 trinity kernel: 2 0x2c92 May 1 17:13:48 trinity kernel: 3 0x2c8e May 1 17:13:48 trinity kernel: 4 0xbfa39508 May 1 17:13:48 trinity kernel: 5 0xbfa394ec May 1 17:13:48 trinity kernel: 6 0x0 May 1 17:13:48 trinity kernel: 7 0x7b May 1 17:13:48 trinity kernel: 8 0x7b May 1 17:13:48 trinity kernel: 9 0x0 May 1 17:13:48 trinity kernel: 10 0x33 May 1 17:13:48 trinity kernel: 11 0x25 May 1 17:13:48 trinity kernel: 12 0x1000a0 May 1 17:13:48 trinity kernel: 13 0x73 May 1 17:13:48 trinity kernel: 14 0x246 May 1 17:13:48 trinity kernel: 15 0xbfa394b8 May 1 17:13:48 trinity kernel: 16 0x7b May 1 17:13:48 trinity kernel: do_syscall_stub : PTRACE_SETREGS failed, pid = 14757, errno = 3 May 1 17:13:48 trinity kernel: fix_range_common: failed, killing current process May 1 17:13:48 trinity kernel: BUG: Bad rss-counter state mm:475aab40 idx:0 val:1 May 1 17:13:48 trinity kernel: Stub registers - May 1 17:13:48 trinity kernel: 0 - 100000 May 1 17:13:48 trinity kernel: 1 - 2000 May 1 17:13:48 trinity kernel: 2 - 0 May 1 17:13:48 trinity kernel: 3 - 0 May 1 17:13:48 trinity kernel: 4 - 0 May 1 17:13:48 trinity kernel: 5 - 0 May 1 17:13:48 trinity kernel: 6 - 0 May 1 17:13:48 trinity kernel: 7 - 7b May 1 17:13:48 trinity kernel: 8 - 7b May 1 17:13:48 trinity kernel: 9 - 0 May 1 17:13:48 trinity kernel: 10 - 33 May 1 17:13:48 trinity kernel: 11 - ffffffff May 1 17:13:48 trinity kernel: 12 - 1000c3 May 1 17:13:48 trinity kernel: 13 - 73 May 1 17:13:48 trinity kernel: 14 - 10206 May 1 17:13:48 trinity kernel: 15 - 101028 May 1 17:13:48 trinity kernel: 16 - 7b May 1 17:13:48 trinity kernel: wait_stub_done : failed to wait for SIGTRAP, pid = 14758, n = 14758, errno = 0, status = 0xb7f May 1 17:13:48 trinity kernel: do_syscall_stub : ret = 0, offset = 1052680, data = 477a9008 May 1 17:13:48 trinity kernel: do_syscall_stub: syscall 91 failed, return value = 0x0, expected return value = 0x0 May 1 17:13:48 trinity kernel: syscall parameters: 0x100000 0x2000 0x0 0x0 0x0 0x0 -- Toralf -- To unsubscribe from this list: send the line "unsubscribe trinity" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
