[uml-devel] execve && ip_conntract

[James S. <mi...@st...>]

Hi

i see these just about daily.


(gdb) i line *ip
Line 220 of "ip_conntrack_core.c" starts at address 0x100b6af4 <__ip_conntrack_find+328> and ends at 0x100b6afc <__ip_conntrack_find+336>.
(gdb) bt
#0  segv (address=1375732608, ip=269183738, is_write=0, is_user=0) at trap_kern.c:27
#1  0x100f140a in segv_handler (sig=11, sc=0x510877a0, usermode=0) at trap_user.c:300
#2  0x100f14bf in sig_handler (sig=11, sc={gs = 0, __gsh = 0, fs = 0, __fsh = 0, es = 43, __esh = 0, ds = 43, __dsh = 0, edi = 1359509720, esi = 0, 
      ebp = 1359509644, esp = 1359509624, ebx = 1375732608, edx = 112, ecx = 1, eax = 1375731712, trapno = 14, err = 4, eip = 269183738, cs = 35, __csh = 0, 
      eflags = 66050, esp_at_signal = 1359509624, ss = 43, __ssh = 0, fpstate = 0x510877f8, oldmask = 2048, cr2 = 1375732608}) at trap_user.c:334
#3  <signal handler called>
#4  0x888189 in ?? ()
#5  0x100b6bb3 in ip_conntrack_find_get (tuple=0x510878d8, ignored_conntrack=0x0) at ip_conntrack_core.c:233
#6  0x100b7ac8 in ip_conntrack_in (hooknum=0, pskb=0x51087954, in=0x101cee40, out=0x0, okfn=0x10091f38 <ip_rcv_finish>) at ip_conntrack_core.c:586
#7  0x1008d108 in nf_iterate (head=0x101efce0, skb=0x51087954, hook=0, indev=0x101cee40, outdev=0x0, i=0x51087940, okfn=0x10091f38 <ip_rcv_finish>)
    at netfilter.c:345
#8  0x1008d3c6 in nf_hook_slow (pf=2, hook=0, skb=0x502547fc, indev=0x101cee40, outdev=0x0, okfn=0x10091f38 <ip_rcv_finish>) at netfilter.c:479
#9  0x10091d8a in ip_rcv (skb=0x502547fc, dev=0x101cee40, pt=0x10193684) at ip_input.c:440
#10 0x1008843b in net_rx_action (h=0x101af850) at dev.c:1485
#11 0x100112f5 in do_softirq () at softirq.c:78
#12 0x100ed681 in do_IRQ (irq=4, user_mode=0) at irq.c:331
#13 0x100edd4a in sigio_handler (sig=29, sc=0x51087ad8, usermode=0) at irq_user.c:61
#14 0x100f144e in irq_handler (sig=29, sc={gs = 0, __gsh = 0, fs = 0, __fsh = 0, es = 43, __esh = 0, ds = 43, __dsh = 0, edi = 1, esi = 1342910835, 
      ebp = 1359510488, esp = 1359510448, ebx = 1375731712, edx = 1, ecx = 4096, eax = 0, trapno = 14, err = 6, eip = 268435777, cs = 35, __csh = 0, 
      eflags = 514, esp_at_signal = 1359510448, ss = 43, __ssh = 0, fpstate = 0x0, oldmask = 0, cr2 = 134982860}) at trap_user.c:319
#15 <signal handler called>
#16 0x888189 in ?? ()
#17 0x100f0626 in flush_tlb_range (mm=0x50e6f414, start=0, end=3212836864) at tlb.c:158
#18 0x100f0641 in flush_tlb_mm (mm=0x50e6f414) at tlb.c:163
#19 0x100ed14d in start_thread (regs=0x0, eip=1073747840, esp=3212833248) at exec_kern.c:94
#20 0x10043075 in load_elf_binary (bprm=0x51087db0, regs=0x0) at binfmt_elf.c:754
#21 0x100336fe in search_binary_handler (bprm=0x51087db0, regs=0x0) at exec.c:801
#22 0x100338ed in do_execve (filename=0x510be000 "/bin/sh", argv=0x8075ab8, envp=0xbf7ff208, regs=0x0) at exec.c:894
#23 0x100ed1b0 in execve1 (file=0x510be000 "/bin/sh", argv=0x8075ab8, env=0xbf7ff208) at exec_kern.c:107
#24 0x100ed22c in sys_execve (file=0x80748e8 <Address 0x80748e8 out of bounds>, argv=0x8075ab8, env=0xbf7ff208) at exec_kern.c:130
#25 0x100ef9b0 in execute_syscall (regs={regs = {134695144, 134699704, 3212833288, 7, 134695144, 3212824704, 4294967258, 43, 43, 0, 0, 11, 1074421579, 35, 
        582, 3212824688, 43}}) at syscall_kern.c:331
#26 0x100efab8 in syscall_handler (unused=0x0) at syscall_user.c:78
(gdb) 

any suggestions ?

thanks
	James

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