busybox: fix busybox lock applet pidstr buffer overflow
authorQichao Zhang <njuzhangqichao@gmail.com>
Sun, 20 Mar 2022 01:43:22 +0000 (09:43 +0800)
committerHauke Mehrtens <hauke@hauke-m.de>
Mon, 4 Apr 2022 22:20:24 +0000 (00:20 +0200)
commit9d2b26d5a70583c0cc0bcb94d7e0fb6ac498069a
treeaeecf298589cb52eaf7e85699cb3c22732991844
parent1b595154560a8eda42f5509b242470f20ef9ef3a
busybox: fix busybox lock applet pidstr buffer overflow

Kernel setting `/proc/sys/kernel/pid_max` can be set up to 4194304 (7
digits) which will cause buffer overflow in busbox lock patch, this
often happens when running in a rootfs container environment.
This commit enlarges `pidstr` to 12 bytes to ensure a sufficient buffer
for pid number and an additional char '\n'.

Signed-off-by: Qichao Zhang <njuzhangqichao@gmail.com>
(cherry picked from commit 34567750db2c3a84fc9f971189c223e2eefd93b0)
package/utils/busybox/patches/220-add_lock_util.patch