Hi!
Just discovered this BUG_ON() result in logs. Happened while a system
was under a very disk/memory-intensive load.
This is unlikely to be a memory corruption (pretty new ThinkPad with
original memory).
BUG_ON called from here:
static void sysfs_d_iput(struct dentry * dentry, struct inode * inode)
{
struct sysfs_dirent * sd = dentry->d_fsdata;
if (sd) {
BUG_ON(sd->s_dentry != dentry);
sd->s_dentry = NULL;
sysfs_put(sd);
}
iput(inode);
}
Bug report below. Please CC me
Yury.
kernel BUG at fs/sysfs/dir.c:21!
CPU: 0
EIP: 0060:[sysfs_d_iput+123/144] Not tainted VLI
EFLAGS: 00010206 (2.6.13.3)
EIP is at sysfs_d_iput+0x7b/0x90
eax: c079a72c ebx: cf6c5818 ecx: c01d3f30 edx: cf6c5818
esi: cfc99290 edi: cf6c5818 ebp: c92ab000 esp: c92abc4c
ds: 007b es: 007b ss: 0068
Process monotone (pid: 12389, threadinfo=c92ab000 task=c0ae6cf0)
Stack: cf6c5818 c079a72c 00000005 c01a0a3e 00000000 c11cb680 c10c1860
c117e080 c015cd40 c92abc98 c015cd65 000016a8 00000000 00000080 c127ea60
c01a1b54 c0163c19 0005aa00 00000000 0000d2fb 00000006 00000000 00000000
000201d2
Call Trace:
[prune_dcache+1406/2032] prune_dcache+0x57e/0x7f0
[get_writeback_state+48/64] get_writeback_state+0x30/0x40
[get_dirty_limits+21/192] get_dirty_limits+0x15/0xc0
[shrink_dcache_memory+20/64] shrink_dcache_memory+0x14/0x40
[shrink_slab+345/416] shrink_slab+0x159/0x1a0
[try_to_free_pages+210/400] try_to_free_pages+0xd2/0x190
[__alloc_pages+427/1072] __alloc_pages+0x1ab/0x430
[__do_page_cache_readahead+313/400] __do_page_cache_readahead
+0x139/0x190
[blockable_page_cache_readahead+81/208] blockable_page_cache_readahead
+0x
51/0xd0
[make_ahead_window+112/176] make_ahead_window+0x70/0xb0
[page_cache_readahead+203/384] page_cache_readahead+0xcb/0x180
[file_read_actor+229/240] file_read_actor+0xe5/0xf0
[do_generic_mapping_read+1486/1520] do_generic_mapping_read
+0x5ce/0x5f0
[__generic_file_aio_read+478/544] __generic_file_aio_read+0x1de/0x220
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