From: Ulrich Drepper <drepper@redhat.com>
To: Linus Torvalds <torvalds@transmeta.com>,
linux-kernel@vger.kernel.org, Alexander Viro <aviro@redhat.com>
Subject: oops with bk kernel as of 2003-05-25T13:00:00-07
Date: Sun, 25 May 2003 13:27:19 -0700 [thread overview]
Message-ID: <3ED12727.1080907@redhat.com> (raw)
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I get an oops at startup time:
Unable to handle kernel NULL pointer dereference at virtual address 000003fc
printing eip:
c0226e77
*pde = 00000000
Oops: 0000 [#1]
CPU: 0
EIP: 0060:[<c0226e77>] Not tainted
EFLAGS: 00010246
EIP is at kobj_map+0x9b/0x137
eax: cffbdf40 ebx: 00002400 ecx: cffbe6dc edx: 00000000
esi: 00000001 edi: 00000100 ebp: 00000024 esp: c1297f3c
ds: 007b es: 007b ss: 0068
Process swapper (pid: 1, threadinfo=c1296000 task=c1295900)
Stack: 0000001c 000000d0 00000001 cffbdf40 00002400 cffbdf48 cffbe6a0
c0157a4e
00000000 00002400 00000100 00000000 c01579c8 c01579cd cffbdf40
cffbdf40
00000001 c01575d1 cffbdf40 00002400 00000100 c0316117 c03cdea4
00000000
Call Trace:
[<c0157a4e>] cdev_add+0x63/0x65
[<c01579c8>] exact_match+0x0/0x5
[<c01579cd>] exact_lock+0x0/0x1e
[<c01575d1>] register_chrdev+0xc6/0x10f
[<c039ec53>] init_netlink+0x1f/0x58
[<c039ec2e>] netlink_proto_init+0x47/0x4d
[<c0382880>] do_initcalls+0x27/0x93
[<c012ddc3>] init_workqueues+0xf/0x26
[<c01050a8>] init+0x4c/0x1a8
[<c010505c>] init+0x0/0x1a8
[<c0108a15>] kernel_thread_helper+0x5/0xb
I looked at the code and the problem is that cdev_map == NULL when
cdev_add is called. cdev_map is initialized in a constructor. Maybe
the wrong order or a race...
- --
- --------------. ,-. 444 Castro Street
Ulrich Drepper \ ,-----------------' \ Mountain View, CA 94041 USA
Red Hat `--' drepper at redhat.com `---------------------------
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next reply other threads:[~2003-05-25 20:14 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-25 20:27 Ulrich Drepper [this message]
2003-05-25 21:30 ` oops with bk kernel as of 2003-05-25T13:00:00-07 viro
2003-05-25 21:51 ` [PATCH] " viro
2003-05-25 22:07 ` netlink init order viro
2003-05-25 22:12 ` Linus Torvalds
2003-05-25 22:20 ` viro
2003-05-26 2:07 ` David S. Miller
2003-05-26 2:22 ` Linus Torvalds
2003-05-26 2:25 ` David S. Miller
2003-05-26 2:50 ` viro
2003-05-26 2:55 ` David S. Miller
2003-05-26 4:37 ` viro
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