Messages in this thread | | | From | Baokun Li <> | Subject | [PATCH -next v3 0/2] jffs2: fix two memory leak when mount jffs2 | Date | Fri, 14 Jan 2022 18:28:52 +0800 |
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V1->V2: In jffs2_scan_medium, if s = kzalloc(sizeof(struct jffs2_summary), GFP_KERNEL); returns error, go to "out" to do clear. Null pointer dereference occurs when if (s->sum_list_head) is executed in "out".
V2->V3: Sorry for the noise, but there seems to be a more elegant way to fix the memory leak in jffs2_scan_medium. When memory allocation fails or CONFIG_JFFS2_SUMMARY is N, s is NULL.For the former case, add the new tag "out_buf" to avoid it.In the latter case, jffs2_sum_reset_collected is also an empty function and does nothing.
Baokun Li (2): jffs2: fix memory leak in jffs2_do_mount_fs jffs2: fix memory leak in jffs2_scan_medium
fs/jffs2/build.c | 4 +++- fs/jffs2/scan.c | 6 ++++-- 2 files changed, 7 insertions(+), 3 deletions(-)
-- 2.31.1
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