I'm consistently seeing a kernel oops after creating a couple hundred 1GB
volumes and formatting them XFS, with quota checking turned on. This is with
LVM enabled on a RAID array. RAID level does not seem to matter.
The test system is running vanilla Linux 3.3.4 XFS code on an ARM 7 processor
(Armada XP MV78260 - PJ4Bv7 Processor rev 2 v7l)
It looks like maybe the oops is happening during quota checking.
After this oops occurs, the filesystem is corrupted. Subsequent reboots will
typically result in a hard lockup in the Linux kernel when it tries to mount
the filesystem.
XFS (md10): Mounting Filesystem
XFS (md10): Ending clean mount
XFS (md10): Quotacheck needed: Please wait.
XFS (md10): Quotacheck: Done.
XFS (dm-0): Mounting Filesystem
XFS (dm-0): Ending clean mount
XFS (dm-0): Quotacheck needed: Please wait.
XFS (dm-0): Quotacheck: Done.
...
XFS (dm-155): Mounting Filesystem
XFS (dm-155): Ending clean mount
XFS (dm-155): Quotacheck needed: Please wait.
XFS (dm-155): Quotacheck: Done.
XFS (dm-156): Mounting Filesystem
Unable to handle kernel paging request at virtual address b0111000
pgd = c98dc000
[b0111000] *pgd=00000000
Internal error: Oops: 15 [#1] SMP
Modules linked in: tcm_loop(O) iscsi_target_mod(O) target_core_pscsi(O)
target_core_file(O) target_core_iblock(O) target_core_mod(PO) configfs usbhid
usblp usb_storage usb_libusual uhci_hcd ohci_hcd ehci_hcd xhci_hcd usbcore
usb_common
CPU: 0 Tainted: P O (3.3.4 #1)
PC is at vmap_page_range_noflush+0xe0/0x1b0
LR is at vmap_page_range_noflush+0x158/0x1b0
pc : [<c00cc7b8>] lr : [<c00cc830>] psr: 80000013
sp : d2559b20 ip : b0111000 fp : d2559b6c
r10: 1276165f r9 : b0111000 r8 : fac01000
r7 : c06f66b4 r6 : 00000400 r5 : b0111004 r4 : fac00000
r3 : c09b6c40 r2 : e93a1000 r1 : 00000000 r0 : d2763ffc
Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 10c53c7d Table: 098dc06a DAC: 00000015
Process mount (pid: 25053, stack limit = 0xd25582f0)
Stack: (0xd2559b20 to 0xd255a000)
9b20: d2559b6c c0007eb0 fac00fff e93a1000 e93a0000 0000065f fac01000 00000000
9b40: d2559bec fa800000 00000003 c0727328 00000401 e93a0000 00000000 00000000
9b60: d2559bcc d2559b70 c00cccec c00cc6e4 000000d0 000002d0 d2559bb4 0000065f
9b80: e93a0000 c00d5c84 000202d0 00000401 00000000 00401000 00001004 00000000
9ba0: d2559d58 cda93780 00000003 c0727328 00000401 e93a0000 00000000 00000000
9bc0: d2559bec d2559bd0 c02564d4 c00cc918 00100000 cda93780 00000401 00001000
9be0: d2559c2c d2559bf0 c0256a50 c0256484 00401000 00000000 7fffffff ce6db000
9c00: cda93388 d1e7c200 c02985ac d1e7c200 00000001 00002000 d2559d58 00001000
9c20: d2559c4c d2559c30 c0296828 c025698c 00100100 00200200 00000008 00000008
9c40: d2559cb4 d2559c50 c02985ac c02967cc 00000000 00000001 d2559c74 d2559c68
9c60: c04ed328 c04ed17c 00000000 d2559c78 c0257658 c04ed31c 00000000 00001008
9c80: 00000008 d2559c90 c0296908 d1e7c200 00000008 00000000 00000001 00000001
9ca0: d2559d58 00001000 d2559ce4 d2559cb8 c0298874 c0298554 00000001 00000000
9cc0: 00000000 d1e7c200 00000008 00000000 d1e7c2c0 00000001 d2559d4c d2559ce8
9ce0: c0298ca4 c0298750 00000001 cda93300 d2559d1c c0071d1c cbbcc000 00000001
9d00: 00000000 d2559d60 d1e7c2a0 cda93300 00000008 00000000 d1c553c0 d258b200
9d20: cbbcc000 00000400 00000000 d1e7c200 00000000 00428100 00000000 0000000f
9d40: d2559d84 d2559d50 c029a418 c029889c d2559d84 d2559d60 00000008 00000000
9d60: 00000008 00000000 ce6db000 00000400 00000000 d1f4d000 d2559db4 d2559d88
9d80: c02a1728 c029a404 00005000 00000000 00005000 d1f4d000 00000003 00000007
9da0: 0001fe00 00000000 d2559e14 d2559db8 c029d044 c02a1650 00005000 d2559dc8
9dc0: c026a5c0 c026a5d8 c98439c0 c026538c d2559e04 d2559de0 c0263394 c005a378
9de0: 00000000 00000000 00000000 d1f4d000 d1f4ec00 00000000 00000040 d25a0000
9e00: c026522c d25a0000 d2559e3c d2559e18 c026538c c029cd28 0000000c f2bb70e0
9e20: 00000083 00008000 f2bb7150 d1f4ec00 d2559e94 d2559e40 c00df3bc c0265238
9e40: 00000000 312d6d64 d2003635 d2559e58 00000004 d2559e60 000050ec c00d5c84
9e60: cd017c22 271aee18 00000005 f4a093c0 c0711678 00008000 d25a0000 c0711678
9e80: d2558000 cc4983c0 d2559eac d2559e98 c0263710 c00df294 c026522c c00be250
9ea0: d2559ed4 d2559eb0 c00dfff4 c0263700 c0711678 cd017c00 00008000 f4a093c0
9ec0: cd017c00 00008000 d2559efc d2559ed8 c00f7698 c00dffe4 d25a0000 c0711678
9ee0: cc4983c0 d25a0000 cd017c00 00008000 d2559f24 d2559f00 c00f7eb4 c00f7650
9f00: d25a0000 00000008 cd017c00 00008400 00008000 d25a0000 d2559f6c d2559f28
9f20: c00f980c c00f7e84 f4a08290 f2aaf800 d2559f38 d2559f48 c00af0dc c00f9144
9f40: 20000013 c912f000 bef3feff 00008400 00000000 c000dfe8 d2558000 00000000
9f60: d2559fa4 d2559f70 c00f9a2c c00f91fc d25a0000 00000000 524b7722 cc4983c0
9f80: cd017c00 d25a0000 000bc048 000bc048 bef3feff 00000015 00000000 d2559fa8
9fa0: c000de20 c00f99ac 000bc048 000bc048 bef3feff bef3ff21 bef3fede 00008400
9fc0: 000bc048 000bc048 bef3feff 00000015 bef3ff21 00000000 bef3fede 00000000
9fe0: 00008400 bef3fac4 0004fba8 b6e80374 60000010 bef3feff 00000000 00000000
Backtrace:
[<c00cc6d8>] (vmap_page_range_noflush+0x0/0x1b0) from [<c00cccec>]
(vm_map_ram+0x3e0/0x454)
[<c00cc90c>] (vm_map_ram+0x0/0x454) from [<c02564d4>]
(_xfs_buf_map_pages+0x5c/0xac)
[<c0256478>] (_xfs_buf_map_pages+0x0/0xac) from [<c0256a50>]
(xfs_buf_get_uncached+0xd0/0x14c)
r6:00001000 r5:00000401 r4:cda93780 r3:00100000
[<c0256980>] (xfs_buf_get_uncached+0x0/0x14c) from [<c0296828>]
(xlog_get_bp+0x68/0xbc)
[<c02967c0>] (xlog_get_bp+0x0/0xbc) from [<c02985ac>]
(xlog_write_log_records+0x64/0x1fc)
r5:00000008 r4:00000008
[<c0298548>] (xlog_write_log_records+0x0/0x1fc) from [<c0298874>]
(xlog_clear_stale_blocks+0x130/0x14c)
[<c0298744>] (xlog_clear_stale_blocks+0x0/0x14c) from [<c0298ca4>]
(xlog_find_tail+0x414/0x484)
[<c0298890>] (xlog_find_tail+0x0/0x484) from [<c029a418>]
(xlog_recover+0x20/0xa0)
[<c029a3f8>] (xlog_recover+0x0/0xa0) from [<c02a1728>]
(xfs_log_mount+0xe4/0x174)
r6:d1f4d000 r5:00000000 r4:00000400
[<c02a1644>] (xfs_log_mount+0x0/0x174) from [<c029d044>]
(xfs_mountfs+0x328/0x610)
r9:00000000 r8:0001fe00 r7:00000007 r6:00000003 r5:d1f4d000
r4:00005000
[<c029cd1c>] (xfs_mountfs+0x0/0x610) from [<c026538c>]
(xfs_fs_fill_super+0x160/0x258)
[<c026522c>] (xfs_fs_fill_super+0x0/0x258) from [<c00df3bc>]
(mount_bdev+0x134/0x1d8)
r8:d1f4ec00 r7:f2bb7150 r6:00008000 r5:00000083 r4:f2bb70e0
r3:0000000c
[<c00df288>] (mount_bdev+0x0/0x1d8) from [<c0263710>] (xfs_fs_mount+0x1c/0x28)
[<c02636f4>] (xfs_fs_mount+0x0/0x28) from [<c00dfff4>] (mount_fs+0x1c/0xc0)
[<c00dffd8>] (mount_fs+0x0/0xc0) from [<c00f7698>] (vfs_kern_mount+0x54/0xc0)
r6:00008000 r5:cd017c00 r4:f4a093c0
[<c00f7644>] (vfs_kern_mount+0x0/0xc0) from [<c00f7eb4>]
(do_kern_mount+0x3c/0xdc)
r8:00008000 r7:cd017c00 r6:d25a0000 r5:cc4983c0 r4:c0711678
r3:d25a0000
[<c00f7e78>] (do_kern_mount+0x0/0xdc) from [<c00f980c>] (do_mount+0x61c/0x698)
r8:d25a0000 r7:00008000 r6:00008400 r5:cd017c00 r4:00000008
r3:d25a0000
[<c00f91f0>] (do_mount+0x0/0x698) from [<c00f9a2c>] (sys_mount+0x8c/0xcc)
[<c00f99a0>] (sys_mount+0x0/0xcc) from [<c000de20>] (ret_fast_syscall+0x0/0x30)
r7:00000015 r6:bef3feff r5:000bc048 r4:000bc048
Code: e1a09005 e51b1030 e2855004 e7923001 (e5992000)
---[ end trace 32ec378b8e6c443e ]---