Bug 26112

Summary: [LogFS] [2.6.37-rc8+] Kernel BUG at logfs/readwrite.c:297!
Product: File System Reporter: Maciej Rutecki (maciej.rutecki)
Component: OtherAssignee: fs_other
Status: RESOLVED OBSOLETE    
Severity: normal CC: akpm, alan, florian, maciej.rutecki, prasadjoshi124, rjw
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.37-rc8 Subsystem:
Regression: Yes Bisected commit-id:
Bug Depends on:    
Bug Blocks: 21782    

Description Maciej Rutecki 2011-01-04 20:17:35 UTC 
Subject    : [LogFS] [2.6.37-rc8+] Kernel BUG at logfs/readwrite.c:297!
Submitter  : Prasad Joshi <prasadjoshi124@gmail.com>
Date       : 2011-01-02 21:22
Message-ID : AANLkTinpoM8FuG8UkF88xs_V37dz_wgE8t-s0JPzaS-w@mail.gmail.com
References : http://marc.info/?l=linux-kernel&m=129400335910652&w=2

This entry is being used for tracking a regression from 2.6.36. Please don't
close it until the problem is fixed in the mainline.
Comment 1 Florian Mickler 2011-02-20 14:32:37 UTC 
Don't know... except for the obvious patch:

diff --git a/fs/logfs/readwrite.c b/fs/logfs/readwrite.c
index ee99a9f..8d51253 100644
--- a/fs/logfs/readwrite.c
+++ b/fs/logfs/readwrite.c
@@ -292,7 +292,7 @@ static void logfs_lock_write_page(struct page *page)
 
        while (unlikely(!trylock_page(page))) {
                if (loop++ > 0x1000) {
-                       /* Has been observed once so far... */
+                       /* Has been observed twice so far... */
                        printk(KERN_ERR "stack at %p\n", &loop);
                        BUG();
                }