The patch titled readahead: fix NULL filp dereference has been removed from the -mm tree. Its filename was readahead-fix-null-filp-dereference.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: readahead: fix NULL filp dereference From: Wu Fengguang <fengguang.wu@xxxxxxxxx> btrfs relocate_file_extent_cluster() calls us with NULL filp: [ 4005.426805] BUG: unable to handle kernel NULL pointer dereference at 00000021 [ 4005.426818] IP: [<c109a130>] page_cache_sync_readahead+0x18/0x3e Signed-off-by: Wu Fengguang <fengguang.wu@xxxxxxxxx> Cc: Yan Zheng <yanzheng@xxxxxxxx> Reported-by: Kirill A. Shutemov <kirill@xxxxxxxxxxxxx> Tested-by: Kirill A. Shutemov <kirill@xxxxxxxxxxxxx> Cc: <stable@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/readahead.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN mm/readahead.c~readahead-fix-null-filp-dereference mm/readahead.c --- a/mm/readahead.c~readahead-fix-null-filp-dereference +++ a/mm/readahead.c @@ -503,7 +503,7 @@ void page_cache_sync_readahead(struct ad return; /* be dumb */ - if (filp->f_mode & FMODE_RANDOM) { + if (filp && (filp->f_mode & FMODE_RANDOM)) { force_page_cache_readahead(mapping, filp, offset, req_size); return; } _ Patches currently in -mm which might be from fengguang.wu@xxxxxxxxx are origin.patch linux-next.patch include-linux-fsh-complete-hexification-of-fmode_-constants.patch vfs-o_-bit-numbers-uniqueness-check.patch vfs-o_-bit-numbers-uniqueness-check-update.patch vfs-o_-bit-numbers-uniqueness-check-fix.patch vfs-o_-bit-numbers-uniqueness-check-fix-2.patch vfs-introduce-fmode_neg_offset-for-allowing-negative-f_pos.patch vfs-add-super-operation-writeback_inodes.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html