Dear, Marcelo. You wrote Saturday, February 26, 2005, 1:04:32 AM:
Sorry about delay, i had switched kernel to non-SMP mode. I cannot debug on kernel (it is loaded VPN server, and there is no redundancy for now). I have only few old oopses, saved before (it is on old redhat kernel) Feb 16 06:44:41 nss kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000000 Feb 16 06:44:41 nss kernel: printing eip: Feb 16 06:44:41 nss kernel: 00000000 Feb 16 06:44:41 nss kernel: *pde = 00000000 Feb 16 06:44:41 nss kernel: Oops: 0000 Feb 16 06:44:41 nss kernel: cls_u32 sch_sfq sch_cbq ip_nat_ftp ip_conntrack_ftp tun ipt_REJECT ipt_REDIRECT nls_iso8859-1 loop cipcb ip_gre ipip ppp_async pp Feb 16 06:44:41 nss kernel: CPU: 3 Feb 16 06:44:41 nss kernel: EIP: 0060:[<00000000>] Not tainted Feb 16 06:44:41 nss kernel: EFLAGS: 00010286 Feb 16 06:44:41 nss kernel: Feb 16 06:44:41 nss kernel: EIP is at [unresolved] (2.4.20-20.9smp) Feb 16 06:44:41 nss kernel: eax: d4b26000 ebx: ce7fe000 ecx: c01997c0 edx: ef7c6b80 Feb 16 06:44:41 nss kernel: esi: 00000000 edi: ce7fe000 ebp: e040a880 esp: cfdf7ee0 Feb 16 06:44:41 nss kernel: ds: 0068 es: 0068 ss: 0068 Feb 16 06:44:41 nss kernel: Process pptpctrl (pid: 15960, stackpage=cfdf7000) Feb 16 06:44:41 nss kernel: Stack: c019d839 d4b26000 00000000 c019b2e6 ce7fe000 ce7fe974 cfdf7f48 ce7fe000 Feb 16 06:44:41 nss kernel: e040a880 00000004 00000010 c0197a15 ce7fe000 e040a880 00000000 00000000 Feb 16 06:44:41 nss kernel: e040a880 c01662b7 e040a880 00000000 cfdf6000 00000145 cfdf6000 00001962 Feb 16 06:44:41 nss kernel: Call Trace: [<c019d839>] pty_chars_in_buffer [kernel] 0x39 (0xcfdf7ee0)) Feb 16 06:44:41 nss kernel: [<c019b2e6>] normal_poll [kernel] 0x106 (0xcfdf7eec)) Feb 16 06:44:41 nss kernel: [<c0197a15>] tty_poll [kernel] 0x85 (0xcfdf7f0c)) Feb 16 06:44:41 nss kernel: [<c01662b7>] do_select [kernel] 0x247 (0xcfdf7f24)) Feb 16 06:44:41 nss kernel: [<c016663e>] sys_select [kernel] 0x34e (0xcfdf7f60)) Feb 16 06:44:41 nss kernel: [<c01098cf>] system_call [kernel] 0x33 (0xcfdf7fc0)) Feb 16 06:44:41 nss kernel: Feb 16 06:44:41 nss kernel: Feb 16 06:44:41 nss kernel: Code: Bad EIP value. in new kernel there is no debug messages to find where is problem, but problem looks very similar Feb 17 13:13:54 nss kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000000 Feb 17 13:13:54 nss kernel: printing eip: Feb 17 13:13:54 nss kernel: 00000000 Feb 17 13:13:54 nss kernel: *pde = 00000000 Feb 17 13:13:54 nss kernel: Oops: 0000 Feb 17 13:13:54 nss kernel: CPU: 3 Feb 17 13:13:54 nss kernel: EIP: 0010:[<00000000>] Not tainted Feb 17 13:13:54 nss kernel: EFLAGS: 00010286 Feb 17 13:13:54 nss kernel: eax: ec32e000 ebx: f6891000 ecx: c01f56a0 edx: d6547980 Feb 17 13:13:54 nss kernel: esi: f6891000 edi: 00000000 ebp: f39c4c00 esp: d66bbed8 Feb 17 13:13:54 nss kernel: ds: 0018 es: 0018 ss: 0018 Feb 17 13:13:54 nss kernel: Process pptpctrl (pid: 10632, stackpage=d66bb000) Feb 17 13:13:54 nss kernel: Stack: c01f9829 ec32e000 00000000 c01f7e66 f6891000 00000010 00000202 f68910c0 Feb 17 13:13:54 nss kernel: f6891000 f39c4c00 00000000 c01f3bb0 f6891000 f39c4c00 00000000 00000000 Feb 17 13:13:54 nss kernel: f39c4c00 00000004 00000010 c0153a87 f39c4c00 00000000 d66ba000 00000145 Feb 17 13:13:54 nss kernel: Call Trace: [<c01f9829>] [<c01f7e66>] [<c01f3bb0>] [<c0153a87>] [<c0153e0e>] Feb 17 13:13:54 nss kernel: [<c010ae99>] [<c0108f67>] Feb 17 13:13:54 nss kernel: Feb 17 13:13:54 nss kernel: Code: Bad EIP value. And problem disappearing in non-SMP kernel. > Hi, > On Fri, Feb 18, 2005 at 10:56:53AM +0200, nuclearcat wrote: >> Is discussed at >> http://kerneltrap.org/mailarchive/1/message/12508/thread >> bug fixed in 2.4.x tree? Cause seems i have downloaded 2.4.29, and it >> is not fixed (still my kernel on vpn server crashing almost at start), >> i have grepped fast pre and bk patches, but didnt found any fixed >> related to tty/pty. > Can you please post the oops? Have you done so already? > What makes you think it is the same race discussed in the above thread? > BTW, I fail to see any drivers/char/pty.c change related to the race which > triggers > the pty_chars_in_buffer->0 oops. > Quoting the first message from thread you mention: > "That last call trace entry is the call in pty_chars_in_buffer() to > /* The ldisc must report 0 if no characters available to be read */ > count = to->ldisc.chars_in_buffer(to); > " > Alan, Linus, what correction to the which the above thread discusses has > been deployed? >> Provided in thread patch from Linus working, but after night i have >> checked server, and see load average jumped to 700. >> Can anybody help in that? I am not kernel guru to provide a patch, but >> seems by search in google it is actual problem for people, who own >> poptop vpn servers, it is really causing serious instability for >> servers. > Can you compile a list of such v2.4 reports? > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- With best regards, GlobalProof Globax Division Manager, Denys Fedoryshchenko mailto:[EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
