Hi Junxiao, > Hi Eric, > > On 10/11/2016 10:42 AM, Eric Ren wrote: >> Hi Junxiao, >> >> As the subject, the testing hung there on a kernel without your patches: >> >> "ocfs2: revert using ocfs2_acl_chmod to avoid inode cluster lock hang" >> and >> "ocfs2: fix posix_acl_create deadlock" >> >> The stack trace is: >> ``` >> ocfs2cts1:~ # pstree -pl 24133 >> discontig_runne(24133)───activate_discon(21156)───mpirun(15146)─┬─fillup_contig_b(15149)───sudo(15231)───chmod(15232) >> >> ocfs2cts1:~ # pgrep -a chmod >> 15232 /bin/chmod -R 777 /mnt/ocfs2 >> >> ocfs2cts1:~ # cat /proc/15232/stack >> [<ffffffffa05377ef>] __ocfs2_cluster_lock.isra.39+0x1bf/0x620 [ocfs2] >> [<ffffffffa053856d>] ocfs2_inode_lock_full_nested+0x12d/0x840 [ocfs2] >> [<ffffffffa0538dbb>] ocfs2_inode_lock_atime+0xcb/0x170 [ocfs2] >> [<ffffffffa0531e61>] ocfs2_readdir+0x41/0x1b0 [ocfs2] >> [<ffffffff8120d03c>] iterate_dir+0x9c/0x110 >> [<ffffffff8120d453>] SyS_getdents+0x83/0xf0 >> [<ffffffff815e126e>] entry_SYSCALL_64_fastpath+0x12/0x6d >> [<ffffffffffffffff>] 0xffffffffffffffff >> ``` >> >> Do you think this issue can be fixed by your patches? > Looks not. Those two patches are to fix recursive locking deadlock. But > from above call trace, there is no recursive lock. Sorry, the call trace on another node was missing. Here it is:
ocfs2cts2:~ # pstree -lp sshd(4292)─┬─sshd(4745)───sshd(4753)───bash(4754)───orted(4781)───fillup_contig_b(4782)───sudo(4864)───chmod(4865) ocfs2cts2:~ # cat /proc/4865/stack [<ffffffffa053e7ef>] __ocfs2_cluster_lock.isra.39+0x1bf/0x620 [ocfs2] [<ffffffffa053f56d>] ocfs2_inode_lock_full_nested+0x12d/0x840 [ocfs2] [<ffffffffa059c860>] ocfs2_iop_get_acl+0x40/0xf0 [ocfs2] [<ffffffff812044e6>] generic_permission+0x166/0x1c0 [<ffffffffa0542aca>] ocfs2_permission+0xaa/0xd0 [ocfs2] [<ffffffff81204596>] __inode_permission+0x56/0xb0 [<ffffffff812068fa>] link_path_walk+0x29a/0x560 [<ffffffff81206cbf>] path_lookupat+0x7f/0x110 [<ffffffff8120929c>] filename_lookup+0x9c/0x150 [<ffffffff811f96c3>] SyS_fchmodat+0x33/0x90 [<ffffffff815e126e>] entry_SYSCALL_64_fastpath+0x12/0x6d [<ffffffffffffffff>] 0xffffffffffffffff Thanks, Eric > > Thanks, > Junxiao. >> I will try your patches later, but I am little worried the possibility >> of reproduction may not be 100%. >> So ask you to confirm;-) >> >> Eric > _______________________________________________ Ocfs2-devel mailing list Ocfs2-devel@oss.oracle.com https://oss.oracle.com/mailman/listinfo/ocfs2-devel
