Messages in this thread | | | Date | Fri, 29 Sep 2000 15:19:23 -0700 | From | Matthew Dharm <> | Subject | BUG & OOPS REPORT: /proc/scsi/ entries not properly cleaned up |
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I'm using 2.4.0-test9-pre7 and have a _very_ reproducable OOPS with the SCSI layer. Everything relevant is compiled as a module (except for the /proc support).
The test scenario is this: (1) Boot the machine (2) modprobe ide-scsi (note this autoloads scsi_mod but nothing else) (3) rmmod ide-scsi (4) ls /proc/scsi Then the OOPS happens.
If, instead of step (4), I instead re-modprobe ide-scsi again, then an 'ls /proc/scsi/' will show (without an immediate OOPS):
[root@zen mdharm]# ls /proc/scsi/ ide-scsi/ ide-scsi/ scsi
No, the double ide-scsi entry isn't a typo -- this is what ls reports as being there.
The OOPS case is decoded via ksymoops below. My intuition suggests that this is related to the fact that /proc seems to always be busy (and therefore not umountable) at shutdown.
I'm more than willing to test patches that might fix the problem.
Sep 29 15:05:01 zen kernel: Unable to handle kernel paging request at virtual address d38c2010 Sep 29 15:05:01 zen kernel: c0145032 Sep 29 15:05:01 zen kernel: *pde = 01594063 Sep 29 15:05:01 zen kernel: Oops: 0002 Sep 29 15:05:01 zen kernel: CPU: 0 Sep 29 15:05:01 zen kernel: EIP: 0010:[proc_get_inode+150/264] Sep 29 15:05:01 zen kernel: EFLAGS: 00010286 Sep 29 15:05:01 zen kernel: eax: d38c2000 ebx: cf687520 ecx: c1466fc0 edx: 00000023 Sep 29 15:05:01 zen kernel: esi: cd990340 edi: cf687574 ebp: ffffffea esp: cd99def0 Sep 29 15:05:01 zen kernel: ds: 0018 es: 0018 ss: 0018 Sep 29 15:05:01 zen kernel: Process ls (pid: 705, stackpage=cd99d000) Sep 29 15:05:01 zen kernel: Stack: cda17ec0 cd9901c0 c0146a9c c144b800 00001190 cf687520 fffffff4 cda17ec0 Sep 29 15:05:01 zen kernel: cd9901c0 cd990214 c0137083 cd9901c0 cda17ec0 00000000 00000000 cd99df68 Sep 29 15:05:01 zen kernel: cf115013 c01377c4 cda17e40 cd99df68 00000000 cf115000 00000000 cd99dfa4 Sep 29 15:05:01 zen kernel: Call Trace: [proc_lookup+104/140] [real_lookup+79/184] [path_walk+1440/2028] [<f27a545f>] [__user_walk+58/84] [sys_newlstat+21/112] [system_call+51/64] Sep 29 15:05:01 zen kernel: Code: ff 40 10 8b 43 24 80 48 14 18 66 8b 43 08 25 00 f0 ff ff 66 Using defaults from ksymoops -t elf32-i386 -a i386
Code; 00000000 Before first symbol 00000000 <_EIP>: Code; 00000000 Before first symbol 0: ff 40 10 incl 0x10(%eax) Code; 00000003 Before first symbol 3: 8b 43 24 movl 0x24(%ebx),%eax Code; 00000006 Before first symbol 6: 80 48 14 18 orb $0x18,0x14(%eax) Code; 0000000a Before first symbol a: 66 8b 43 08 movw 0x8(%ebx),%ax Code; 0000000e Before first symbol e: 25 00 f0 ff ff andl $0xfffff000,%eax Code; 00000013 Before first symbol 13: 66 00 00 addb %al,(%eax)
Matt Dharm
-- Matthew Dharm Home: mdharm-usb@one-eyed-alien.net Maintainer, Linux USB Mass Storage Driver
NYET! The evil stops here! -- Pitr User Friendly, 6/22/1998 [unhandled content-type:application/pgp-signature] | |