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authorXin Yin <yinxin.x@bytedance.com>2022-05-27 13:18:00 +0300
committerGao Xiang <hsiangkao@linux.alibaba.com>2022-05-29 10:36:04 +0300
commitb5cb79dcfd03e7bb8054d38eaaa557d07966a811 (patch)
tree0fbdea9b1eade4d369784030d4411bf345eb11c0 /fs/erofs
parent0130e4e8e49f9bd0342d3fc14102470ea9e7230e (diff)
downloadlinux-b5cb79dcfd03e7bb8054d38eaaa557d07966a811.tar.xz
erofs: fix crash when enable tracepoint cachefiles_prep_read
RIP: 0010:trace_event_raw_event_cachefiles_prep_read+0x88/0xe0 [cachefiles] Call Trace: <TASK> cachefiles_prepare_read+0x1d7/0x3a0 [cachefiles] erofs_fscache_read_folios+0x188/0x220 [erofs] erofs_fscache_meta_readpage+0x106/0x160 [erofs] do_read_cache_folio+0x42a/0x590 ? bdi_register_va.part.14+0x1a7/0x210 ? super_setup_bdi_name+0x76/0xe0 erofs_bread+0x5b/0x170 [erofs] erofs_fc_fill_super+0x12b/0xc50 [erofs] This tracepoint uses rreq->inode, should set it when allocating. Fixes: d435d53228dd ("erofs: change to use asynchronous io for fscache readpage/readahead") Signed-off-by: Xin Yin <yinxin.x@bytedance.com> Reviewed-by: Jeffle Xu <jefflexu@linux.alibaba.com> Reviewed-by: Chao Yu <chao@kernel.org> Link: https://lore.kernel.org/r/20220527101800.22360-1-yinxin.x@bytedance.com Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Diffstat (limited to 'fs/erofs')
-rw-r--r--fs/erofs/fscache.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/erofs/fscache.c b/fs/erofs/fscache.c
index 7e4417167d0b..355259252943 100644
--- a/fs/erofs/fscache.c
+++ b/fs/erofs/fscache.c
@@ -17,6 +17,7 @@ static struct netfs_io_request *erofs_fscache_alloc_request(struct address_space
rreq->start = start;
rreq->len = len;
rreq->mapping = mapping;
+ rreq->inode = mapping->host;
INIT_LIST_HEAD(&rreq->subrequests);
refcount_set(&rreq->ref, 1);
return rreq;