2003-09-07 09:50:16

by Daniel Blueman

Subject: [2.6.0-test4] [BUG] reiserfs_writepage()

Let me know if any more info would help on this!

---

kernel BUG at mm/filemap.c:336!
invalid operand: 0000 [#1]
CPU: 0
EIP: 0060:[<c0140df3>] Not tainted
EFLAGS: 00010246
EIP is at end_page_writeback+0x6a/0x82
eax: 00000000 ebx: c123cad0 ecx: 00000017 edx: c038ab60
esi: c14f9260 edi: c777bf58 ebp: df689d64 esp: df689d58
ds: 007b es: 007b ss: 0068
Process pdflush (pid: 6, threadinfo=df688000 task=df6af000)
Stack: c123cad0 00000000 c777bf58 df689d94 c01df812 c123cad0 c123cad0
df689edc
00000000 00000000 00000000 d02a503c c123cad0 d02a50f8 df688000
df689de4
c0196b8e c123cad0 df689edc d4f5803c d4f580f8 d4f5803c df689df8
c010ac1c
Call Trace:
[<c01df812>] reiserfs_write_full_page+0xe1/0x314
[<c0196b8e>] mpage_writepages+0x3de/0x538
[<c010ac1c>] common_interrupt+0x18/0x20
[<c01dfa5b>] reiserfs_writepage+0x0/0x39
[<c0147501>] do_writepages+0x37/0x39
[<c0194242>] __sync_single_inode+0x1cd/0x4a7
[<c019491e>] sync_sb_inodes+0x1ed/0x409
[<c0194cd1>] writeback_inodes+0x197/0x4b3
[<c0147361>] wb_kupdate+0xdb/0x15a
[<c0147cfc>] __pdflush+0x258/0x65b
[<c011a221>] schedule_tail+0x10e/0x14f
[<c01480ff>] pdflush+0x0/0x15
[<c0148110>] pdflush+0x11/0x15
[<c0147286>] wb_kupdate+0x0/0x15a
[<c01074b1>] kernel_thread_helper+0x5/0xb

Code: 0f 0b 50 01 a8 e7 35 c0 eb cd 89 1c 24 e8 03 c8 00 00 85 c0

--
Daniel J Blueman

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2003-09-08 09:13:35

by Oleg Drokin

Subject: Re: [2.6.0-test4] [BUG] reiserfs_writepage()

Hello!

On Sun, Sep 07, 2003 at 11:50:09AM +0200, Daniel Blueman wrote:

> Let me know if any more info would help on this!
> EIP is at end_page_writeback+0x6a/0x82
> [<c01df812>] reiserfs_write_full_page+0xe1/0x314
> [<c0196b8e>] mpage_writepages+0x3de/0x538
> [<c01dfa5b>] reiserfs_writepage+0x0/0x39
> [<c0147501>] do_writepages+0x37/0x39

This patch should help.

Bye,
Oleg

diff -Nru a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
--- a/fs/reiserfs/inode.c Mon Sep 8 12:54:12 2003
+++ b/fs/reiserfs/inode.c Mon Sep 8 12:54:12 2003
@@ -2048,8 +2048,8 @@
last_offset = inode->i_size & (PAGE_CACHE_SIZE - 1) ;
/* no file contents in this page */
if (page->index >= end_index + 1 || !last_offset) {
- error = 0 ;
- goto done ;
+ unlock_page(page);
+ return 0;
}
kaddr = kmap_atomic(page, KM_USER0);
memset(kaddr + last_offset, 0, PAGE_CACHE_SIZE-last_offset) ;