Bonjour tout le monde, J'ai eut un probl�me bizzare hier: j'ai recompil� un noyau (2.4.20 d/l sur kernel.org), copier tous les fichiers n�c�ssaires au bon endroit, mais j'ai compl�tement oubli� de relanc� lilo, bref, je veut rebooter (avec la commande /sbin/reboot, lien vers /sbin/halt) et l�, j'ai eut droit un jolie segfault.
J'ai donc fait un strace pour avoir plus d'info:
[...]
[pid 10490] read(3,
"\10\0\0\0\25\1\0\0pts/1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,384) = 384
[pid 10490] fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET,start=0,
len=0}) = 0
[pid 10490] rt_sigaction(SIGALRM, {0x80493a0, [], 0x4000000}, NULL, 8) = 0
[pid 10490] alarm(0) = 1
[pid 10490] alarm(0) = 0
[pid 10490] rt_sigaction(SIGALRM, {0x4010db70, [], 0x4000000},{0x80493a0, [],
0x4000000}, 8) = 0
[pid 10490] alarm(1) = 0
[pid 10490] fcntl64(3, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET,start=0,
len=0}) = 0
[pid 10490] read(3, "", 384) = 0
[pid 10490] fcntl64(3, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0,
len=0}) = 0
[pid 10490] rt_sigaction(SIGALRM, {0x80493a0, [], 0x4000000}, NULL, 8) = 0
[pid 10490] alarm(0) = 1
[pid 10490] close(3) = 0
[pid 10490] _exit(0) = ?
--- SIGCHLD (Child exited) ---
unlink("/var/run/shutdown.pid") = 0
unlink("/etc/nologin") = -1 ENOENT (No such file or directory)
sync( <unfinished ...>
+++ killed by SIGSEGV +++
J'ai aussi �a dans les logs, un beau Ooops:
Dec 27 23:01:55 localhost kernel: printing eip:
Dec 27 23:01:55 localhost kernel: c01336f4
Dec 27 23:01:55 localhost kernel: Oops: 0000
Dec 27 23:01:55 localhost kernel: CPU: 0
Dec 27 23:01:55 localhost kernel: EIP: 0010:[wait_for_buffers+36/144] Not
tainted
Dec 27 23:01:55 localhost kernel: EFLAGS: 00010202
Dec 27 23:01:55 localhost kernel: eax: 00000000 ebx: 00000013 ecx:00000000
edx: 00000001
Dec 27 23:01:55 localhost kernel: esi: 000040f7 edi: 00000013 ebp:00000000
esp: c9355f50
Dec 27 23:01:55 localhost kernel: ds: 0018 es: 0018 ss: 0018
Dec 27 23:01:55 localhost kernel: Process shutdown (pid: 10386,
stackpage=c9355000)
Dec 27 23:01:55 localhost kernel: Stack: 00000000 00000001 00000001 bffff8cc
c0133778 00000000 00000001 00000001
Dec 27 23:01:55 localhost kernel: 00000001 00000000 00000000
c01337c7 00000000 00000001 00000001 00000000
Dec 27 23:01:55 localhost kernel: 00000000 00000002 00000000
00000000 0804c850 bffffb94 c01338a0 00000000
Dec 27 23:01:55 localhost kernel: Call Trace: [wait_for_locked_buffers+24/48]
[sync_buffers+55/80] [fsync_dev+48/64] [sys_sync+7/16] [system_call+51/56]
Dec 27 23:01:55 localhost kernel:
Dec 27 23:01:55 localhost kernel: Code: 8b 7f 20 f6 43 18 04 75 13 83 7c 24 1c
00 74 3c 53 e8 86 0b
Dec 27 23:02:13 localhost kernel: <1>Unable to handle kernel NULL pointer
dereference at virtual address 00000033
Cela ne vient pas de la m�moire, d�j� tester avec memtest86 (+3h30 et 7
test pass�s avec succ�s).
La config: Athlon 1600+, 2x256 Mo de RAM (DDR2100).
Une id�e ?
Merci d'avance
--
"L'adversaire est vuln�rable lorsqu'il cro�t avoir gagn�."
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