Arnab Tah has uploaded this change for review. ( https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1170824?usp=email ) Change subject: CRASH:Memory access violation in posix_acl_2_fsal_acl ...................................................................... CRASH:Memory access violation in posix_acl_2_fsal_acl Commit 11d0261ff9d15079a9d3f7d8c9ff39342d4dd01b causes posix_acl_2_fsal_acl() to generate ACEs in the FSAL ACL that correspond to an input POSIX ACL mask ACE. However, ace_count(), which is used to calculate space for the output, wasn't modified to provide space for the additional ACEs. For some POSIX ACLs this can cause the output to overrun the allocated space resulting in a crash. STARTUP :MAJ :stack backtrace follows: /lib64/libganesha_nfsd.so.5.5.3(+0x96700)[0x7f17ba175700] /lib64/libganesha_nfsd.so.5.5.3(+0x66d90)[0x7f17ba145d90] /lib64/libpthread.so.0(+0x12cf0)[0x7f17b823fcf0] /lib64/libc.so.6(gsignal+0x10f)[0x7f17b7a94acf] /lib64/libc.so.6(abort+0x127)[0x7f17b7a67ea5] /lib64/libc.so.6(+0x8fcd7)[0x7f17b7ad5cd7] /lib64/libc.so.6(+0x96fdc)[0x7f17b7adcfdc] /lib64/libc.so.6(+0x9b1fc)[0x7f17b7ae11fc] /lib64/libc.so.6(realloc+0x33b)[0x7f17b7ae23db] /usr/lib64/ganesha/libfsalvfs.so(vfs_sub_getattrs+0x32b) [0x7f17b244d930] /usr/lib64/ganesha/libfsalvfs.so(+0xf10d)[0x7f17b244710d] /usr/lib64/ganesha/libfsalvfs.so(vfs_getattr2+0x23d) [0x7f17b244a6f7] /lib64/libganesha_nfsd.so.5.5.3(+0x16b786)[0x7f17ba24a786] Change-Id: I81efee93da9f4d7eadbb2e0b36aefdcaf36d3faa Signed-off-by: Arnab Tah <atah(a)ddn.com&gt; --- M src/FSAL/posix_acls.c 1 file changed, 0 insertions(+), 4 deletions(-) git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha refs/changes/24/1170824/1 -- To view, visit https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1170824?usp=email To unsubscribe, or for help writing mail filters, visit https://review.gerrithub.io/settings Gerrit-Project: ffilz/nfs-ganesha Gerrit-Branch: next Gerrit-Change-Id: I81efee93da9f4d7eadbb2e0b36aefdcaf36d3faa Gerrit-Change-Number: 1170824 Gerrit-PatchSet: 1 Gerrit-Owner: Arnab Tah <atah(a)ddn.com&gt; Gerrit-MessageType: newchange