[+Cc linux-nfs]
It's definitely an "rpc_pipefs" bug. I've simplified the reproducer to the
following:
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <unistd.h>
int main()
{
int fd, i;
char buf[16];
mkdir("mnt", 0700);
system("echo N > /sys/kernel/debug/failslab/ignore-gfp-wait");
system("echo 0 | tee /sys/kernel/debug/fail*/verbose");
fd = open("/proc/thread-self/fail-nth", O_WRONLY);
for (i = 0; ; i++) {
write(fd, buf, sprintf(buf, "%d", i));
mount("foo", "mnt", "rpc_pipefs", 0, NULL);
umount("mnt");
}
}
On Linus' tree (10b84daddbec72), the symbolized log output is:
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
audit: type=1325 audit(1522616460.334:4): table=filter family=3 entries=0
audit: type=1300 audit(1522616460.334:4): arch=c000003e syscall=55 success=yes exit=0 a0=3 a1=0 a2=60 a3=55f3b7fba528 items=0 ppid=3115 pid=3120 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=ttyS0 ses=1 comm="syz_dentry_kill" exe="/root/syz_dentry_kill" subj=kernel key=(null)
audit: type=1327 audit(1522616460.334:4): proctitle="./syz_dentry_kill"
audit: type=1325 audit(1522616460.335:5): table=filter family=2 entries=0
audit: type=1300 audit(1522616460.335:5): arch=c000003e syscall=55 success=yes exit=0 a0=3 a1=0 a2=40 a3=55f3b7fbcd88 items=0 ppid=3115 pid=3120 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=ttyS0 ses=1 comm="syz_dentry_kill" exe="/root/syz_dentry_kill" subj=kernel key=(null)
audit: type=1327 audit(1522616460.335:5): proctitle="./syz_dentry_kill"
audit: type=1325 audit(1522616460.335:6): table=nat family=2 entries=0
IPVS: ftp: loaded support on port[0] = 21
audit: type=1300 audit(1522616460.335:6): arch=c000003e syscall=55 success=yes exit=0 a0=3 a1=0 a2=40 a3=55f3b7fbd448 items=0 ppid=3115 pid=3120 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=ttyS0 ses=1 comm="syz_dentry_kill" exe="/root/syz_dentry_kill" subj=kernel key=(null)
audit: type=1327 audit(1522616460.335:6): proctitle="./syz_dentry_kill"
audit: type=1325 audit(1522616460.336:7): table=mangle family=2 entries=0
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry cache
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry cache
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfsd4_cb
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry cache
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry cache
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry cache
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry cache
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfsd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfsd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfsd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfsd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfsd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry lockd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfsd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfsd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfsd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfsd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
random: crng init done
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfs
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfs
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfs
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfs
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfs
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry info
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory clntXX
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry gssd
net/sunrpc/rpc_pipe.c: rpc_mkpipe_dentry() failed to create pipe clntXX/gssd (errno = -12)
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry gssd
net/sunrpc/rpc_pipe.c: rpc_mkpipe_dentry() failed to create pipe clntXX/gssd (errno = -12)
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry gssd
net/sunrpc/rpc_pipe.c: rpc_mkpipe_dentry() failed to create pipe clntXX/gssd (errno = -12)
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry info
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory clntXX
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry info
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory clntXX
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry gssd
net/sunrpc/rpc_pipe.c: rpc_mkpipe_dentry() failed to create pipe clntXX/gssd (errno = -12)
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry gssd
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_mkpipe_dentry() failed to create pipe clntXX/gssd (errno = -12)
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory clntXX
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory clntXX
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry lockd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry lockd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfsd4_cb
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfsd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry lockd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfsd4_cb
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfsd4_cb
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfsd4_cb
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfsd4_cb
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry lockd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry lockd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfsd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfsd4_cb
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfs
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfs
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfs
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfs
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry nfs
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry mount
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry info
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory clntXX
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry info
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry info
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory clntXX
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry cache
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry cache
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry cache
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry info
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory clntXX
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry cache
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry cache
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory /
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory clntXX
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry clntXX
net/sunrpc/rpc_pipe.c: rpc_populate failed to populate directory gssd
net/sunrpc/rpc_pipe.c: __rpc_create_common failed to allocate inode for dentry blocklayout
net/sunrpc/rpc_pipe.c: rpc_mkpipe_dentry() failed to create pipe nfs/blocklayout (errno = -12)
list_del corruption. prev->next should be 000000002c929de0, but was 0000000065421b2c
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:53!
invalid opcode: 0000 [#1] SMP KASAN
Modules linked in:
CPU: 2 PID: 5082 Comm: syz_dentry_kill Not tainted 4.16.0-rc6+ #79
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-20171110_100015-anatol 04/01/2014
RIP: 0010:__list_del_entry_valid+0xef/0x150 lib/rational.c:61
RSP: 0018:ffff88002851f7a0 EFLAGS: 00010282
RAX: 0000000000000054 RBX: ffff880025d11c80 RCX: 0000000000000000
RDX: 0000000000000054 RSI: 1ffff100050a3ea9 RDI: ffffed00050a3ee8
RBP: ffff88002851f7b8 R08: 1ffff100050a3e40 R09: 0000000000000000
R10: ffff88002851f778 R11: 0000000000000000 R12: ffff8800271c2de0
R13: 1ffff100050a3efd R14: ffff880025c1fc70 R15: dffffc0000000000
FS: 00007f87e8a72740(0000) GS:ffff880035900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffef7017aa0 CR3: 000000002e7b8000 CR4: 00000000003406e0
Call Trace:
__dentry_kill+0x265/0x700 fs/dcache.c:1027
dput.part.20+0x5a0/0x830
dput+0x1f/0x30 fs/dcache.c:852
rcu_read_lock include/linux/rcupdate.h:631 [inline]
net_generic include/net/netns/generic.h:44 [inline]
rpc_fill_super+0x628/0xae0 net/sunrpc/rpc_pipe.c:942
dget include/linux/dcache.h:327 [inline]
mount_ns+0xc6/0x190 fs/super.c:1045
rpc_mount+0x9e/0xd0 net/sunrpc/rpc_pipe.c:1494
mount_fs+0x6b/0x2d0 fs/super.c:1242
vfs_kern_mount.part.26+0xc6/0x4a0
do_mount+0xea4/0x2bb0 fs/namespace.c:2973
copy_mount_string fs/namespace.c:2746 [inline]
SYSC_mount fs/namespace.c:3048 [inline]
SyS_mount+0xab/0x120 fs/namespace.c:3035
prepare_exit_to_usermode arch/x86/entry/common.c:191 [inline]
syscall_return_slowpath arch/x86/entry/common.c:265 [inline]
do_syscall_32_irqs_on arch/x86/entry/common.c:336 [inline]
do_syscall_64+0x283/0x940 arch/x86/entry/common.c:344
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7f87e8173879
RSP: 002b:00007ffef7016c38 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f87e8173879
RDX: 00000000200002c0 RSI: 0000000020000140 RDI: 0000000020000300
RBP: 00007ffef7017aa0 R08: 0000000020000200 R09: 000055f3b7fba520
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000003 R14: 00007ffef7016c8c R15: 00007ffef7016c84
Code: 4c 89 e2 48 c7 c7 80 c0 75 87 e8 d5 7e 46 fe 0f 0b 48 c7 c7 e0 c0 75 87 e8 c7 7e 46 fe 0f 0b 48 c7 c7 40 c1 75 87 e8 b9 7e 46 fe <0f> 0b 48 c7 c7 a0 c1 75 87 e8 ab 7e 46 fe 0f 0b 48 89 df 48 89
RIP: __list_del_entry_valid+0xef/0x150 lib/rational.c:61 RSP: ffff88002851f7a0
---[ end trace f9e62e977a549c37 ]---