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[Bug 1348670] Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000010, set_nfsv4_acl_one+0x21/0xb0 [nfsd]

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: ScHRiLL <1348670@xxxxxxxxxxxxxxxxxx>
Date: Thu, 02 Oct 2014 14:01:59 -0000
Reply-to: Bug 1348670 <1348670@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Same error with new kernel. It was fine and working without a hick up
and today the same issue reverted. 16:01:16 up 6 days

Using 
3.2.0-69-generic #103-Ubuntu SMP Tue Sep 2 05:02:14 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
ii  linux-image-3.2.0-69-generic        3.2.0-69.103                                        Linux kernel image for version 3.2.0 on 64 bit x86 SMP
ii  linux-image-server                  3.2.0.69.82                                         Linux kernel image on Server Equipment.

Oct  2 15:54:29 barbarela kernel: [528230.139053] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
Oct  2 15:54:29 barbarela kernel: [528230.139091] IP: [<ffffffffa03fb451>] set_nfsv4_acl_one+0x21/0xb0 [nfsd]
Oct  2 15:54:29 barbarela kernel: [528230.139129] PGD 415158067 PUD 415159067 PMD 0 
Oct  2 15:54:29 barbarela kernel: [528230.139157] Oops: 0000 [#19] SMP 
Oct  2 15:54:29 barbarela kernel: [528230.139176] CPU 1 
Oct  2 15:54:29 barbarela kernel: [528230.139185] Modules linked in: it87(O) vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) pci_stub nfsd nfs lockd fscache auth_rpcgss nfs_acl sunrpc dm_crypt snd_hda_codec_hdmi snd_hda_intel snd_hda_codec psmouse edac_core lp edac_mce_amd parport sp5100_tco i2c_piix4 mac_hid k10temp serio_raw snd_hwdep snd_pcm snd_timer snd soundcore snd_page_alloc bonding hwmon_vid fam15h_power raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1 raid0 multipath linear raid10 nouveau ttm drm_kms_helper drm i2c_algo_bit mxm_wmi pata_atiixp r8169 video wmi [last unloaded: vboxdrv]
Oct  2 15:54:29 barbarela kernel: [528230.139546] 
Oct  2 15:54:29 barbarela kernel: [528230.139557] Pid: 4409, comm: nfsd Tainted: G      D    O 3.2.0-69-generic #103-Ubuntu Gigabyte Technology Co., Ltd. GA-970A-DS3/GA-970A-DS3
Oct  2 15:54:29 barbarela kernel: [528230.139596] RIP: 0010:[<ffffffffa03fb451>]  [<ffffffffa03fb451>] set_nfsv4_acl_one+0x21/0xb0 [nfsd]
Oct  2 15:54:29 barbarela kernel: [528230.139629] RSP: 0018:ffff8801bdc29ce0  EFLAGS: 00010282
Oct  2 15:54:29 barbarela kernel: [528230.139644] RAX: 0000000000004000 RBX: ffff88000381f480 RCX: 0000000002ae378f
Oct  2 15:54:29 barbarela kernel: [528230.139661] RDX: ffffffffa0422374 RSI: 0000000000000000 RDI: ffff88000381f480
Oct  2 15:54:29 barbarela kernel: [528230.139678] RBP: ffff8801bdc29d10 R08: ffffea000a1463c0 R09: ffffffffa03fb4af
Oct  2 15:54:29 barbarela kernel: [528230.139695] R10: ffff88028518f500 R11: 0000000040000004 R12: 0000000000000000
Oct  2 15:54:29 barbarela kernel: [528230.139711] R13: ffff88001555bb20 R14: 0000000000000000 R15: ffff8800a86b2180
Oct  2 15:54:29 barbarela kernel: [528230.139730] FS:  00007fc55e013700(0000) GS:ffff88043ec40000(0000) knlGS:0000000000000000
Oct  2 15:54:29 barbarela kernel: [528230.140874] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Oct  2 15:54:29 barbarela kernel: [528230.142016] CR2: 0000000000000010 CR3: 000000038bac3000 CR4: 00000000000406e0
Oct  2 15:54:29 barbarela kernel: [528230.142956] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Oct  2 15:54:29 barbarela kernel: [528230.142956] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Oct  2 15:54:29 barbarela kernel: [528230.142956] Process nfsd (pid: 4409, threadinfo ffff8801bdc28000, task ffff88007aa2ae00)
Oct  2 15:54:29 barbarela kernel: [528230.142956] Stack:
Oct  2 15:54:29 barbarela kernel: [528230.142956]  ffff8800a86b2040 ffff88000381f480 0000000000000000 ffff88001555bb20
Oct  2 15:54:29 barbarela kernel: [528230.142956]  0000000000000000 ffff8800a86b2180 ffff8801bdc29d50 ffffffffa03fc5e3
Oct  2 15:54:29 barbarela kernel: [528230.142956]  ffff88028518f300 0000000000000000 ffff88001d0aa000 ffff8800a86b2040
Oct  2 15:54:29 barbarela kernel: [528230.142956] Call Trace:
Oct  2 15:54:29 barbarela kernel: [528230.142956]  [<ffffffffa03fc5e3>] nfsd4_set_nfs4_acl+0x143/0x150 [nfsd]
Oct  2 15:54:29 barbarela kernel: [528230.142956]  [<ffffffffa0409b74>] nfsd4_setattr+0xd4/0x130 [nfsd]
Oct  2 15:54:29 barbarela kernel: [528230.142956]  [<ffffffffa0408be8>] nfsd4_proc_compound+0x518/0x6e0 [nfsd]
Oct  2 15:54:29 barbarela kernel: [528230.142956]  [<ffffffffa03f7a4b>] nfsd_dispatch+0xeb/0x230 [nfsd]
Oct  2 15:54:29 barbarela kernel: [528230.142956]  [<ffffffffa02ef475>] svc_process_common+0x345/0x690 [sunrpc]
Oct  2 15:54:29 barbarela kernel: [528230.142956]  [<ffffffff81060ad0>] ? try_to_wake_up+0x200/0x200
Oct  2 15:54:29 barbarela kernel: [528230.142956]  [<ffffffffa02efb12>] svc_process+0x102/0x150 [sunrpc]
Oct  2 15:54:29 barbarela kernel: [528230.142956]  [<ffffffffa03f71ad>] nfsd+0xbd/0x160 [nfsd]
Oct  2 15:54:29 barbarela kernel: [528230.142956]  [<ffffffffa03f70f0>] ? nfsd_startup+0xf0/0xf0 [nfsd]
Oct  2 15:54:29 barbarela kernel: [528230.142956]  [<ffffffff8108b96c>] kthread+0x8c/0xa0
Oct  2 15:54:29 barbarela kernel: [528230.142956]  [<ffffffff8166e3b4>] kernel_thread_helper+0x4/0x10
Oct  2 15:54:29 barbarela kernel: [528230.142956]  [<ffffffff8108b8e0>] ? flush_kthread_worker+0xa0/0xa0
Oct  2 15:54:29 barbarela kernel: [528230.142956]  [<ffffffff8166e3b0>] ? gs_change+0x13/0x13
Oct  2 15:54:29 barbarela kernel: [528230.142956] Code: 19 c0 f7 d0 83 e0 02 c3 90 90 55 48 89 e5 48 83 ec 30 48 89 5d d8 4c 89 65 e0 4c 89 6d e8 4c 89 75 f0 4c 89 7d f8 66 66 66 66 90 <48> 63 46 10 49 89 fd 49 89 f6 be d0 00 00 00 49 89 d4 4c 8d 3c 
Oct  2 15:54:29 barbarela kernel: [528230.142956] RIP  [<ffffffffa03fb451>] set_nfsv4_acl_one+0x21/0xb0 [nfsd]
Oct  2 15:54:29 barbarela kernel: [528230.142956]  RSP <ffff8801bdc29ce0>
Oct  2 15:54:29 barbarela kernel: [528230.142956] CR2: 0000000000000010
Oct  2 15:54:29 barbarela kernel: [528230.170576] ---[ end trace e2fe32bc8beee7db ]---

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https://bugs.launchpad.net/bugs/1348670

Title:
  BUG: unable to handle kernel NULL pointer dereference at
  0000000000000010, set_nfsv4_acl_one+0x21/0xb0 [nfsd]

Status in “linux” package in Ubuntu:
  Invalid
Status in “linux” source package in Lucid:
  Invalid
Status in “linux” source package in Precise:
  Fix Committed
Status in “linux” source package in Trusty:
  Fix Committed
Status in “linux” source package in Utopic:
  Invalid
Status in “linux” package in Debian:
  Fix Released

Bug description:
  I've seen this happen twice in the last 8 days on an NFS server
  running Ubuntu precise and kernels 3.2.0-65.98-generic (on the first
  occasion) and 3.2.0-67.101-generic (the second time), amd64. This
  never happened before in several months of operation; until 2014-07-01
  this server was running an older 3.2.0 kernel.

  When this error appears in the logs, the system stops answering NFS
  RPCs (e.g., "rpcinfo -u localhost nfs 3" hangs) and a reboot is
  necessary to restore NFS service. A more detailed stack trace follows.
  Looking at the source code (fs/nfsd/vfs.c:set_nfsv4_acl_one()) I see
  that the call posix_acl_xattr_size(pacl->a_count) is not preceded by a
  check that pacl != NULL. Could this be related to the following entry
  in the changelog for 3.2.0-65.98?

    * NFSD: Call ->set_acl with a NULL ACL structure if no entries
      - LP: #1328154

  Jul 24 10:12:53 server kernel: [575939.742131] IP: [<ffffffffa055c451>] set_nfsv4_acl_one+0x21/0xb0 [nfsd]
  Jul 24 10:12:53 server kernel: [575939.742131] PGD c243bb067 PUD c2400a067 PMD 0
  Jul 24 10:12:53 server kernel: [575939.742131] Oops: 0000 [#1] SMP
  Jul 24 10:12:53 server kernel: [575939.742131] CPU 3
  Jul 24 10:12:53 server kernel: [575939.742131] Modules linked in: usblp btrfs zlib_deflate libcrc32c ufs qnx4 hfsplus hfs minix ntfs vfat msdos fat jfs reiserfs ext2 cts openafs(P) xt_tcpudp ipmi_si ipmi_devintf ipmi_msghandler iptable_filter ip_tables x_tables autofs4 bnep parport_pc rfcomm bluetooth ppdev binfmt_misc rpcsec_gss_krb5 nfsd nfs lockd fscache auth_rpcgss nfs_acl sunrpc xfs dm_crypt bridge stp psmouse hpilo sp5100_tco i2c_piix4 amd64_edac_mod hpwdt edac_core k10temp edac_mce_amd joydev serio_raw acpi_power_meter mac_hid lp parport raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov raid6_pq async_tx raid1 raid0 multipath linear radeon ttm drm_kms_helper drm osst usbhid hid st ch i2c_algo_bit pata_atiixp hpsa bnx2
  Jul 24 10:12:53 server kernel: [575939.742131]
  Jul 24 10:12:53 server kernel: [575939.742131] Pid: 2523, comm: nfsd Tainted: P O 3.2.0-67-generic #101-Ubuntu HP ProLiant DL385 G7
  Jul 24 10:12:53 server kernel: [575939.742131] RIP: 0010:[<ffffffffa055c451>] [<ffffffffa055c451>] set_nfsv4_acl_one+0x21/0xb0 [nfsd]
  Jul 24 10:12:53 server kernel: [575939.742131] RSP: 0018:ffff880422085ce0 EFLAGS: 00010282
  Jul 24 10:12:53 server kernel: [575939.742131] RAX: 0000000000004000 RBX: ffff880e29b16cc0 RCX: 00000000013cc2cc
  Jul 24 10:12:53 server kernel: [575939.742131] RDX: ffffffffa0583374 RSI: 0000000000000000 RDI: ffff880e29b16cc0
  Jul 24 10:12:53 server kernel: [575939.742131] RBP: ffff880422085d10 R08: ffffea002cdf3b80 R09: ffffffffa055c4af
  Jul 24 10:12:53 server kernel: [575939.742131] R10: ffff880b37ceed00 R11: 0000000040000004 R12: 0000000000000000
  Jul 24 10:12:53 server kernel: [575939.742131] R13: ffff8807f56418c0 R14: 0000000000000000 R15: ffff880c2268d180
  Jul 24 10:12:53 server kernel: [575939.742131] FS: 00007fbbbbafd700(0000) GS:ffff88103fc80000(0000) knlGS:0000000000000000
  Jul 24 10:12:53 server kernel: [575939.742131] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
  Jul 24 10:12:53 server kernel: [575939.742131] CR2: 0000000000000010 CR3: 0000000c22d6c000 CR4: 00000000000006e0
  Jul 24 10:12:53 server kernel: [575939.742131] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  Jul 24 10:12:53 server kernel: [575939.742131] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
  Jul 24 10:12:53 server kernel: [575939.742131] Process nfsd (pid: 2523, threadinfo ffff880422084000, task ffff880425964500)
  Jul 24 10:12:53 server kernel: [575939.742131] Stack:
  Jul 24 10:12:53 server kernel: [575939.742131] ffff880c2268d040 ffff880e29b16cc0 0000000000000000 ffff8807f56418c0
  Jul 24 10:12:53 server kernel: [575939.742131] 0000000000000000 ffff880c2268d180 ffff880422085d50 ffffffffa055d5e3
  Jul 24 10:12:53 server kernel: [575939.742131] ffff880b37cee840 0000000000000000 ffff880c22684000 ffff880c2268d040
  Jul 24 10:12:53 server kernel: [575939.742131] Call Trace:
  Jul 24 10:12:53 server kernel: [575939.742131] [<ffffffffa055d5e3>] nfsd4_set_nfs4_acl+0x143/0x150 [nfsd]
  Jul 24 10:12:53 server kernel: [575939.742131] [<ffffffffa056ab74>] nfsd4_setattr+0xd4/0x130 [nfsd]
  Jul 24 10:12:53 server kernel: [575939.742131] [<ffffffffa0569be8>] nfsd4_proc_compound+0x518/0x6e0 [nfsd]
  Jul 24 10:12:53 server kernel: [575939.742131] [<ffffffffa0558a4b>] nfsd_dispatch+0xeb/0x230 [nfsd]
  Jul 24 10:12:53 server kernel: [575939.742131] [<ffffffffa03ae475>] svc_process_common+0x345/0x690 [sunrpc]
  Jul 24 10:12:53 server kernel: [575939.742131] [<ffffffff81060ad0>] ? try_to_wake_up+0x200/0x200
  Jul 24 10:12:53 server kernel: [575939.742131] [<ffffffffa03aeb12>] svc_process+0x102/0x150 [sunrpc]
  Jul 24 10:12:53 server kernel: [575939.742131] [<ffffffffa05581ad>] nfsd+0xbd/0x160 [nfsd]
  Jul 24 10:12:53 server kernel: [575939.742131] [<ffffffffa05580f0>] ? nfsd_startup+0xf0/0xf0 [nfsd]
  Jul 24 10:12:53 server kernel: [575939.742131] [<ffffffff8108b8cc>] kthread+0x8c/0xa0
  Jul 24 10:12:53 server kernel: [575939.742131] [<ffffffff8166deb4>] kernel_thread_helper+0x4/0x10
  Jul 24 10:12:53 server kernel: [575939.742131] [<ffffffff8108b840>] ? flush_kthread_worker+0xa0/0xa0
  Jul 24 10:12:53 server kernel: [575939.742131] [<ffffffff8166deb0>] ? gs_change+0x13/0x13
  Jul 24 10:12:53 server kernel: [575939.742131] Code: 19 c0 f7 d0 83 e0 02 c3 90 90 55 48 89 e5 48 83 ec 30 48 89 5d d8 4c 89 65 e0 4c 89 6d e8 4c 89 75 f0 4c 89 7d f8 66 66 66 66 90 <48> 63 46 10 49 89 fd 49 89 f6 be d0 00 00 00 49 89 d4 4c 8d 3c
  Jul 24 10:12:53 server kernel: [575939.742131] RIP [<ffffffffa055c451>] set_nfsv4_acl_one+0x21/0xb0 [nfsd]
  Jul 24 10:12:53 server kernel: [575939.742131] RSP <ffff880422085ce0>
  Jul 24 10:12:53 server kernel: [575939.742131] CR2: 0000000000000010
  Jul 24 10:12:53 server kernel: [575942.132715] ---[ end trace ba2b82e486b77140 ]---

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Follow ups

Re: [Bug 1348670] Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000010, set_nfsv4_acl_one+0x21/0xb0 [nfsd]
From: Sergio Gelato, 2014-10-02
References

[Bug 1348670] [NEW] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010, set_nfsv4_acl_one+0x21/0xb0 [nfsd]
From: Sergio Gelato, 2014-07-25