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Milan Broz <mbroz@redhat.com> reports:
> on today Linus' tree I get OOps if using nfs.
>
> server (2.6.36) exports dir:
> /dir 172.16.1.0/24(rw,async,all_squash,no_subtree_check,anonuid=500,anongid=500)
>
> on client it is mounted in fstab
> server:/dir /mnt/tst nfs rw,soft 0 0
>
> and these commands OOpses it (simplified from a configure script):
>
> cd /dir
> touch x
> install x y
>
> [ 105.327701] ------------[ cut here ]------------
> [ 105.327979] kernel BUG at fs/nfs/nfs3xdr.c:1338!
> [ 105.328075] invalid opcode: 0000 [#1] PREEMPT SMP
> [ 105.328223] last sysfs file: /sys/devices/virtual/bdi/0:16/uevent
> [ 105.328349] Modules linked in: usbcore dm_mod
> [ 105.328553]
> [ 105.328678] Pid: 3710, comm: install Not tainted 2.6.37+ #423 440BX Desktop Reference Platform/VMware Virtual Platform
> [ 105.328853] EIP: 0060:[<c116c06c>] EFLAGS: 00010282 CPU: 0
> [ 105.329152] EIP is at nfs3_xdr_enc_setacl3args+0x61/0x98
> [ 105.329249] EAX: ffffffea EBX: ce941d98 ECX: 00000000 EDX: 00000004
> [ 105.329340] ESI: ce941cd0 EDI: 000000a4 EBP: ce941cc0 ESP: ce941cb4
> [ 105.329431] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
> [ 105.329525] Process install (pid: 3710, ti=ce940000 task=ced36f20 task.ti=ce940000)
> [ 105.336600] Stack:
> [ 105.336693] ce941cd0 ce9dc000 00000000 ce941cf8 c12ecd02 c12f43e0 c116c00b cf754158
> [ 105.336982] ce9dc004 cf754284 ce9dc004 cf7ffee8 ceff9978 ce9dc000 cf7ffee8 ce9dc000
> [ 105.337182] ce9dc000 ce941d14 c12e698d cf75412c ce941d98 cf7ffee8 cf7fff20 00000000
> [ 105.337405] Call Trace:
> [ 105.337695] [<c12ecd02>] rpcauth_wrap_req+0x75/0x7f
> [ 105.337806] [<c12f43e0>] ? xdr_encode_opaque+0x12/0x15
> [ 105.337898] [<c116c00b>] ? nfs3_xdr_enc_setacl3args+0x0/0x98
> [ 105.337988] [<c12e698d>] call_transmit+0x17e/0x1e8
> [ 105.338072] [<c12ec307>] __rpc_execute+0x6d/0x1a6
> [ 105.338155] [<c12ec474>] rpc_execute+0x34/0x37
> [ 105.338235] [<c12e738d>] rpc_run_task+0xb5/0xbd
> [ 105.338316] [<c12e7474>] rpc_call_sync+0x3d/0x58
> [ 105.338402] [<c116d0c6>] nfs3_proc_setacls+0x18e/0x24f
> [ 105.338493] [<c10b3f76>] ? __kmalloc+0x148/0x1c4
> [ 105.338579] [<c10ecd01>] ? posix_acl_alloc+0x12/0x22
> [ 105.338665] [<c116d5c8>] nfs3_proc_setacl+0xa0/0xca
> [ 105.338748] [<c116d69c>] nfs3_setxattr+0x62/0x88
> [ 105.338834] [<c1317042>] ? sub_preempt_count+0x7c/0x89
> [ 105.338926] [<c116d63a>] ? nfs3_setxattr+0x0/0x88
> [ 105.339026] [<c10cfa79>] __vfs_setxattr_noperm+0x26/0x95
> [ 105.339114] [<c10cfb43>] vfs_setxattr+0x5b/0x76
> [ 105.339211] [<c10cfbfb>] setxattr+0x9d/0xc3
> [ 105.339298] [<c10a2ea8>] ? handle_pte_fault+0x258/0x5cb
> [ 105.339428] [<c1091ff6>] ? __free_pages+0x1a/0x23
> [ 105.339517] [<c10498ea>] ? up_read+0x16/0x2c
> [ 105.339599] [<c10b8365>] ? fget+0x0/0xa3
> [ 105.339677] [<c10b8365>] ? fget+0x0/0xa3
> [ 105.339760] [<c1025d23>] ? get_parent_ip+0xb/0x31
> [ 105.339843] [<c1317042>] ? sub_preempt_count+0x7c/0x89
> [ 105.339931] [<c10cfc72>] sys_fsetxattr+0x51/0x79
> [ 105.340014] [<c1002853>] sysenter_do_call+0x12/0x32
> [ 105.340133] Code: 2e 76 18 00 58 31 d2 8b 7f 28 f6 43 04 01 74 03 8b 53 08 6a 00 8b 46 04 6a 01 8b 0b 52 89 fa e8 85 10 f8 ff 83 c4 0c 85 c0 79 04 <0f> 0b eb fe 31 c9 f6 43 04 04 74 03 8b 4b 0c 68 00 10 00 00 8d
> [ 105.350321] EIP: [<c116c06c>] nfs3_xdr_enc_setacl3args+0x61/0x98 SS:ESP 0068:ce941cb4
> [ 105.364385] ---[ end trace 01fcfe7f0f7f6e4a ]---
nfs3_xdr_enc_setacl3args() is not properly setting up the target
buffer before nfsacl_encode() attempts to encode the ACL.
Introduced by commit
|
||
|---|---|---|
| .. | ||
| 9p | ||
| adfs | ||
| affs | ||
| afs | ||
| autofs4 | ||
| befs | ||
| bfs | ||
| btrfs | ||
| cachefiles | ||
| ceph | ||
| cifs | ||
| coda | ||
| configfs | ||
| cramfs | ||
| debugfs | ||
| devpts | ||
| dlm | ||
| ecryptfs | ||
| efs | ||
| exofs | ||
| exportfs | ||
| ext2 | ||
| ext3 | ||
| ext4 | ||
| fat | ||
| freevxfs | ||
| fscache | ||
| fuse | ||
| gfs2 | ||
| hfs | ||
| hfsplus | ||
| hostfs | ||
| hpfs | ||
| hppfs | ||
| hugetlbfs | ||
| isofs | ||
| jbd | ||
| jbd2 | ||
| jffs2 | ||
| jfs | ||
| lockd | ||
| logfs | ||
| minix | ||
| ncpfs | ||
| nfs | ||
| nfs_common | ||
| nfsd | ||
| nilfs2 | ||
| nls | ||
| notify | ||
| ntfs | ||
| ocfs2 | ||
| omfs | ||
| openpromfs | ||
| partitions | ||
| proc | ||
| qnx4 | ||
| quota | ||
| ramfs | ||
| reiserfs | ||
| romfs | ||
| squashfs | ||
| sysfs | ||
| sysv | ||
| ubifs | ||
| udf | ||
| ufs | ||
| xfs | ||
| aio.c | ||
| anon_inodes.c | ||
| attr.c | ||
| bad_inode.c | ||
| binfmt_aout.c | ||
| binfmt_elf_fdpic.c | ||
| binfmt_elf.c | ||
| binfmt_em86.c | ||
| binfmt_flat.c | ||
| binfmt_misc.c | ||
| binfmt_script.c | ||
| binfmt_som.c | ||
| bio-integrity.c | ||
| bio.c | ||
| block_dev.c | ||
| buffer.c | ||
| char_dev.c | ||
| compat_binfmt_elf.c | ||
| compat_ioctl.c | ||
| compat.c | ||
| dcache.c | ||
| dcookies.c | ||
| direct-io.c | ||
| drop_caches.c | ||
| eventfd.c | ||
| eventpoll.c | ||
| exec.c | ||
| fcntl.c | ||
| fifo.c | ||
| file_table.c | ||
| file.c | ||
| filesystems.c | ||
| fs_struct.c | ||
| fs-writeback.c | ||
| generic_acl.c | ||
| inode.c | ||
| internal.h | ||
| ioctl.c | ||
| ioprio.c | ||
| Kconfig | ||
| Kconfig.binfmt | ||
| libfs.c | ||
| locks.c | ||
| Makefile | ||
| mbcache.c | ||
| mpage.c | ||
| namei.c | ||
| namespace.c | ||
| nfsctl.c | ||
| no-block.c | ||
| open.c | ||
| pipe.c | ||
| pnode.c | ||
| pnode.h | ||
| posix_acl.c | ||
| read_write.c | ||
| read_write.h | ||
| readdir.c | ||
| select.c | ||
| seq_file.c | ||
| signalfd.c | ||
| splice.c | ||
| stack.c | ||
| stat.c | ||
| statfs.c | ||
| super.c | ||
| sync.c | ||
| timerfd.c | ||
| utimes.c | ||
| xattr_acl.c | ||
| xattr.c | ||