From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20041001 Firefox/0.10.1 Description of problem: Unmounting NFS filesystems: VFS: Busy inodes after unmount. Self-destruct in 5 seconds. Have a nice day... [ OK ] Saving random seed: [ OK ] Stopping NFS statd: [ OK ] Stopping portmapper: [ OK ] Shutting down kernel logger: [ OK ] Shutting down system logger: [ OK ] Shutting down interface eth2: [ OK ] Shutting down loopback interface: [ OK ] Starting killall: [ OK ] Sending all processes the TERM signal... Sending all processes the KILL signal... RPC: sendmsg returned error 101 nfs: RPC call returned error 101 Unable to handle kernel NULL pointer dereference at virtual address 00000004 printing eip: c017b018 *pde = 00003001 *pte = 00000000 Oops: 0000 panfs nfsd lp parport nfs lockd sunrpc e100 floppy sg microcode keybdev mousedev hid input usb-ohci usbcore aic7xxx sd_mod scsi_mod CPU: 0 EIP: 0060:[<c017b018>] Tainted: P EFLAGS: 00010246 EIP is at destroy_inode [kernel] 0x28 (2.4.21-9.0.3.ELsmp/i686) eax: 00000000 ebx: d39f5380 ecx: 00000000 edx: d39f5380 esi: dc9ba100 edi: d39f5380 ebp: 00000002 esp: d49b3e78 ds: 0068 es: 0068 ss: 0068 Process ksh (pid: 14113, stackpage=d49b3000) Stack: d39f5380 dc9ba100 dc9ba118 c0179b6a d39f5380 d39f5380 d513a380 d513a380 e09b5100 e09b52f0 c0179ec4 00000055 dbf1dc00 c01681a5 d513a380 c03c9f68 c25ca4c0 00000002 d49b2000 00000009 c012c7cd dbf1dc00 d49b2000 d49b2000 Call Trace: [<c0179b6a>] prune_dcache [kernel] 0x18a (0xd49b3e84) [<e09b5100>] nfs_sops [nfs] 0x0 (0xd49b3e98) [<e09b52f0>] nfs_fs_type [nfs] 0x0 (0xd49b3e9c) [<c0179ec4>] shrink_dcache_parent [kernel] 0x24 (0xd49b3ea0) [<c01681a5>] kill_super [kernel] 0x95 (0xd49b3eac) [<c012c7cd>] do_exit [kernel] 0x1ed (0xd49b3ec8) [<c012caab>] do_group_exit [kernel] 0x8b (0xd49b3ee4) [<c013625a>] get_signal_to_deliver [kernel] 0x20a (0xd49b3ef8) [<c010bdd4>] do_signal [kernel] 0x64 (0xd49b3f20) [<c016f88c>] __user_walk [kernel] 0x5c (0xd49b3f70) [<c016a90f>] sys_stat64 [kernel] 0x1f (0xd49b3f8c) [<c0160472>] sys_llseek [kernel] 0xe2 (0xd49b3f94) Code: 8b 48 04 85 c9 74 11 89 1c 24 ff 50 04 8b 5c 24 08 83 c4 0c Kernel panic: Fatal exception Syncing hardware clock to system time Version-Release number of selected component (if applicable): 2.4.21-9.0.3.EL.i386 How reproducible: Sometimes Steps to Reproduce: 1. Occasional reboot 2. 3. Actual Results: reboot hang Additional info: Unmounting NFS filesystems: VFS: Busy inodes after unmount. Self-destruct in 5 seconds. Have a nice day... [ OK ] Saving random seed: [ OK ] Stopping NFS statd: [ OK ] Stopping portmapper: [ OK ] Shutting down kernel logger: [ OK ] Shutting down system logger: [ OK ] Shutting down interface eth2: [ OK ] Shutting down loopback interface: [ OK ] Starting killall: [ OK ] Sending all processes the TERM signal... Sending all processes the KILL signal... RPC: sendmsg returned error 101 nfs: RPC call returned error 101 Unable to handle kernel NULL pointer dereference at virtual address 00000004 printing eip: c017b018 *pde = 00003001 *pte = 00000000 Oops: 0000 panfs nfsd lp parport nfs lockd sunrpc e100 floppy sg microcode keybdev mousedev hid input usb-ohci usbcore aic7xxx sd_mod scsi_mod CPU: 0 EIP: 0060:[<c017b018>] Tainted: P EFLAGS: 00010246 EIP is at destroy_inode [kernel] 0x28 (2.4.21-9.0.3.ELsmp/i686) eax: 00000000 ebx: d39f5380 ecx: 00000000 edx: d39f5380 esi: dc9ba100 edi: d39f5380 ebp: 00000002 esp: d49b3e78 ds: 0068 es: 0068 ss: 0068 Process ksh (pid: 14113, stackpage=d49b3000) Stack: d39f5380 dc9ba100 dc9ba118 c0179b6a d39f5380 d39f5380 d513a380 d513a380 e09b5100 e09b52f0 c0179ec4 00000055 dbf1dc00 c01681a5 d513a380 c03c9f68 c25ca4c0 00000002 d49b2000 00000009 c012c7cd dbf1dc00 d49b2000 d49b2000 Call Trace: [<c0179b6a>] prune_dcache [kernel] 0x18a (0xd49b3e84) [<e09b5100>] nfs_sops [nfs] 0x0 (0xd49b3e98) [<e09b52f0>] nfs_fs_type [nfs] 0x0 (0xd49b3e9c) [<c0179ec4>] shrink_dcache_parent [kernel] 0x24 (0xd49b3ea0) [<c01681a5>] kill_super [kernel] 0x95 (0xd49b3eac) [<c012c7cd>] do_exit [kernel] 0x1ed (0xd49b3ec8) [<c012caab>] do_group_exit [kernel] 0x8b (0xd49b3ee4) [<c013625a>] get_signal_to_deliver [kernel] 0x20a (0xd49b3ef8) [<c010bdd4>] do_signal [kernel] 0x64 (0xd49b3f20) [<c016f88c>] __user_walk [kernel] 0x5c (0xd49b3f70) [<c016a90f>] sys_stat64 [kernel] 0x1f (0xd49b3f8c) [<c0160472>] sys_llseek [kernel] 0xe2 (0xd49b3f94) Code: 8b 48 04 85 c9 74 11 89 1c 24 ff 50 04 8b 5c 24 08 83 c4 0c Kernel panic: Fatal exception Syncing hardware clock to system time
A fix for this problem has just been committed to the RHEL3 U5 patch pool this evening (in kernel version 2.4.21-32.EL).
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2005-294.html