Re: 3.5: kernel BUG at mm/mmap.c:2313 (on sparc64)
From: Hugh Dickins
Date: Mon Jul 30 2012 - 23:17:21 EST
On Tue, 24 Jul 2012, Meelis Roos wrote:
> While testing Debian update on fresh 3.5 kernel on Sun Ultra 2
> (sparc64), got the above BUG during generation of initramfs. The machine
> last run 3.5-rc7 and some previous rc-s fine, as well as earlier 3.x
> releases.
>
> Rerunning this initramfs generation after reboot worked fine, I cannot
> reproduce the problem.
>
> Full dmesg:
>
> [ 0.000000] PROMLIB: Sun IEEE Boot Prom 'OBP 3.25.0 1999/12/03 11:35'
> [ 0.000000] PROMLIB: Root node compatible:
> [ 0.000000] Linux version 3.5.0 (mroos@u2) (gcc version 4.6.3 (Debian 4.6.3-8) ) #17 SMP Tue Jul 24 02:26:02 EEST 2012
> [ 0.000000] debug: ignoring loglevel setting.
> [ 0.000000] bootconsole [earlyprom0] enabled
> [ 0.000000] ARCH: SUN4U
> [ 0.000000] Ethernet address: 08:00:20:89:2a:a0
> [ 0.000000] Kernel: Using 2 locked TLB entries for main kernel image.
> [ 0.000000] Remapping the kernel... done.
> [ 0.000000] OF stdout device is: /sbus@1f,0/zs@f,1100000:a
> [ 0.000000] PROM: Built device tree with 41324 bytes of memory.
> [ 0.000000] Top of RAM: 0x6ff2c000, Total RAM: 0x37f1a000
> [ 0.000000] Memory hole size: 896MB
> [ 0.000000] [0000010000000000-fffff8006f800000] page_structs=131072 node=0 entry=0/8192
> [ 0.000000] [0000010000000000-fffff8006f400000] page_structs=131072 node=0 entry=1/8192
> [ 0.000000] [0000010000800000-fffff8006f000000] page_structs=131072 node=0 entry=2/8192
> [ 0.000000] [0000010000800000-fffff8006ec00000] page_structs=131072 node=0 entry=3/8192
> [ 0.000000] Zone ranges:
> [ 0.000000] Normal [mem 0x00000000-0x6ff2bfff]
> [ 0.000000] Movable zone start for each node
> [ 0.000000] Early memory node ranges
> [ 0.000000] node 0: [mem 0x00000000-0x0fffffff]
> [ 0.000000] node 0: [mem 0x20000000-0x27ffffff]
> [ 0.000000] node 0: [mem 0x40000000-0x4fffffff]
> [ 0.000000] node 0: [mem 0x60000000-0x6fefdfff]
> [ 0.000000] node 0: [mem 0x6ff00000-0x6ff05fff]
> [ 0.000000] node 0: [mem 0x6ff16000-0x6ff2bfff]
> [ 0.000000] On node 0 totalpages: 114573
> [ 0.000000] Normal zone: 1792 pages used for memmap
> [ 0.000000] Normal zone: 0 pages reserved
> [ 0.000000] Normal zone: 112781 pages, LIFO batch:15
> [ 0.000000] Booting Linux...
> [ 0.000000] CPU CAPS: [flush,stbar,swap,muldiv,v9,mul32,div32,v8plus]
> [ 0.000000] CPU CAPS: [vis]
> [ 0.000000] PERCPU: Embedded 5 pages/cpu @fffff8006e800000 s11200 r8192 d21568 u2097152
> [ 0.000000] pcpu-alloc: s11200 r8192 d21568 u2097152 alloc=1*4194304
> [ 0.000000] pcpu-alloc: [0] 0 1
> [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 112781
> [ 0.000000] Kernel command line: root=/dev/sda2 ro debug ignore_loglevel
> [ 0.000000] PID hash table entries: 4096 (order: 2, 32768 bytes)
> [ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 1048576 bytes)
> [ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 524288 bytes)
> [ 0.000000] Memory: 893880k available (2952k kernel code, 976k data, 160k init) [fffff80000000000,000000006ff2c000]
> [ 0.000000] SLUB: Genslabs=16, HWalign=32, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
> [ 0.000000] Hierarchical RCU implementation.
> [ 0.000000] Additional per-CPU info printed with stalls.
> [ 0.000000] NR_IRQS:255
> [ 0.000000] clocksource: mult[360e5a2] shift[24]
> [ 0.000000] clockevent: mult[4bc5ef63] shift[32]
> [ 0.000000] Console: colour dummy device 80x25
> [ 0.000000] console [tty0] enabled, bootconsole disabled
> [ 71.667928] Calibrating delay using timer specific routine.. 593.12 BogoMIPS (lpj=2965620)
> [ 71.667983] pid_max: default: 32768 minimum: 301
> [ 71.668573] Mount-cache hash table entries: 512
> [ 71.721773] CPU 1: synchronized TICK with master CPU (last diff -11 cycles, maxerr 544 cycles)
> [ 71.721934] Brought up 2 CPUs
> [ 71.723608] NET: Registered protocol family 16
> [ 71.741550] SYSIO: UPA portID ffffffff, at 000001fe00000000
> [ 71.768148] bio: create slab <bio-0> at 0
> [ 71.771151] SCSI subsystem initialized
> [ 71.774974] /sbus@1f,0/eeprom@f,1200000: Mostek regs at 0x1fff1200000
> [ 71.776909] AUXIO: Found device at /sbus@1f,0/auxio@f,1900000
> [ 71.777270] Switching to clocksource tick
> [ 71.810118] NET: Registered protocol family 2
> [ 71.810608] IP route cache hash table entries: 8192 (order: 3, 65536 bytes)
> [ 71.811819] TCP established hash table entries: 32768 (order: 6, 524288 bytes)
> [ 71.814438] TCP bind hash table entries: 32768 (order: 6, 524288 bytes)
> [ 71.816949] TCP: Hash tables configured (established 32768 bind 32768)
> [ 71.817001] TCP: reno registered
> [ 71.817043] UDP hash table entries: 512 (order: 1, 16384 bytes)
> [ 71.817177] UDP-Lite hash table entries: 512 (order: 1, 16384 bytes)
> [ 71.818995] NET: Registered protocol family 1
> [ 71.823115] HugeTLB registered 4 MB page size, pre-allocated 0 pages
> [ 71.862789] msgmni has been set to 1745
> [ 71.865244] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
> [ 71.865330] io scheduler noop registered
> [ 71.865377] io scheduler deadline registered
> [ 71.865973] io scheduler cfq registered (default)
> [ 71.878355] Console: switching to colour frame buffer device 144x56
> [ 71.889094] /SUNW,ffb@1e,0: FFB at 000001fc00000000, type 8, DAC pnum[236c] rev[10] manuf_rev[4]
> [ 71.890384] /sbus@1f,0/cgsix@1,0: CGsix [TGX sparc] at 0:1ff10000000
> [ 71.892870] f005b518: ttyS0 at MMIO 0x1fff1100000 (irq = 9) is a zs
> [ 71.892999] Console: ttyS0 (SunZilog zs0)
> [ 77.306607] console [ttyS0] enabled
> [ 77.348957] f005b518: ttyS1 at MMIO 0x1fff1100004 (irq = 9) is a zs
> [ 77.349819] f005c9b8: Keyboard at MMIO 0x1fff1000000 (irq = 9) is a zs
> [ 77.349830] f005c9b8: Mouse at MMIO 0x1fff1000004 (irq = 9) is a zs
> [ 77.576410] esp: esp0, regs[1ffe8810000:1ffe8800000] irq[10]
> [ 77.576422] esp: esp0 is a FASHME, 40 MHz (ccf=0), SCSI ID 7
> [ 80.578511] scsi0 : esp
> [ 80.609109] scsi 0:0:0:0: Direct-Access FUJITSU MAP3367N SUN36G 0401 PQ: 0 ANSI: 4
> [ 80.704326] scsi target0:0:0: Beginning Domain Validation
> [ 80.774040] scsi target0:0:0: FAST-10 WIDE SCSI 20.0 MB/s ST (100 ns, offset 15)
> [ 80.862223] scsi target0:0:0: Domain Validation skipping write tests
> [ 80.936748] scsi target0:0:0: Ending Domain Validation
> [ 82.178015] scsi 0:0:6:0: CD-ROM NEC CD-ROM DRIVE:463 1.05 PQ: 0 ANSI: 2
> [ 82.273068] scsi target0:0:6: Beginning Domain Validation
> [ 82.341475] scsi target0:0:6: FAST-10 SCSI 10.0 MB/s ST (100 ns, offset 15)
> [ 82.425639] scsi target0:0:6: Domain Validation skipping write tests
> [ 82.499862] scsi target0:0:6: Ending Domain Validation
> [ 84.442608] mousedev: PS/2 mouse device common for all mice
> [ 84.507655] sd 0:0:0:0: [sda] 71132959 512-byte logical blocks: (36.4 GB/33.9 GiB)
> [ 84.600644] sd 0:0:0:0: [sda] Write Protect is off
> [ 84.600836] rtc-m48t59 rtc-m48t59.0: rtc core: registered m48t59 as rtc0
> [ 84.603507] TCP: cubic registered
> [ 84.603521] NET: Registered protocol family 17
> [ 84.603611] Key type dns_resolver registered
> [ 84.880103] sd 0:0:0:0: [sda] Mode Sense: b3 00 00 08
> [ 84.942084] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
> [ 85.064358] sda: sda1 sda2 sda3 sda4
> [ 85.117273] sd 0:0:0:0: [sda] Attached SCSI disk
> [ 85.175012] rtc-m48t59 rtc-m48t59.0: setting system clock to 2012-07-24 19:06:54 UTC (1343156814)
> [ 85.589714] input: Sun Mouse as /devices/root/f005abc8/f005c9b8/serio1/input/input0
> [ 85.687776] EXT4-fs (sda2): couldn't mount as ext3 due to feature incompatibilities
> [ 85.831413] EXT4-fs (sda2): couldn't mount as ext2 due to feature incompatibilities
> [ 86.060119] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
> [ 86.154382] VFS: Mounted root (ext4 filesystem) readonly on device 8:2.
> [ 89.033972] /sbus@1f,0/flashprom@f,0: OBP Flash, RD 1fff0000000[80000] WR 1fff1380000[80000]
> [ 89.227691] sunhme.c:v3.10 August 26, 2008 David S. Miller (davem@xxxxxxxxxxxxx)
> [ 89.330622] sr0: scsi-1 drive
> [ 89.330634] cdrom: Uniform CD-ROM driver Revision: 3.20
> [ 89.331310] sr 0:0:6:0: Attached scsi CD-ROM sr0
> [ 89.321066] eth0: HAPPY MEAL (SBUS) 10/100baseT Ethernet 08:00:20:89:2a:a0
> [ 89.568887] eth1: Quattro HME slot 0 (SBUS) 10/100baseT Ethernet 08:00:20:cc:93:40
> [ 89.570931] eth2: Quattro HME slot 1 (SBUS) 10/100baseT Ethernet 08:00:20:cc:93:41
> [ 89.572972] eth3: Quattro HME slot 2 (SBUS) 10/100baseT Ethernet 08:00:20:cc:93:42
> [ 89.662787] eth4: Quattro HME slot 3 (SBUS) 10/100baseT Ethernet 08:00:20:cc:93:43
> [ 89.902924] parport0: sunbpp at 0x1ffec800000
> [ 91.215862] Adding 722912k swap on /dev/sda4. Priority:-1 extents:1 across:722912k
> [ 91.452314] EXT4-fs (sda2): re-mounted. Opts: (null)
> [ 114.855018] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
> [ 115.442137] loop: module loaded
> [ 118.956300] EXT4-fs (sda1): mounting ext2 file system using the ext4 subsystem
> [ 119.058273] EXT4-fs (sda1): mounted filesystem without journal. Opts: (null)
> [ 121.004662] NET: Registered protocol family 10
> [ 124.903762] eth0: Link is up using internal transceiver at 100Mb/s, Full Duplex.
> [ 820.614828] kernel BUG at mm/mmap.c:2313!
> [ 820.665386] \|/ ____ \|/
> [ 820.665386] "@'/ .. \`@"
> [ 820.665386] /_| \__/ |_\
> [ 820.665386] \__U_/
> [ 820.857162] ld-linux.so.2(6567): Kernel bad sw trap 5 [#1]
> [ 820.925150] TSTATE: 0000008011001607 TPC: 00000000004c0904 TNPC: 00000000004c0908 Y: 00000000 Not tainted
> [ 821.045290] TPC: <exit_mmap+0x144/0x160>
> [ 821.094569] g0: 0000000000000005 g1: 0000000000000000 g2: 000000000000000e g3: 0000000000000001
> [ 821.201268] g4: fffff8006e3369a0 g5: fffff8006e1fc000 g6: fffff8004bb6c000 g7: fffff8006e0b8000
> [ 821.307941] o0: 000000000000001d o1: 0000000000753a88 o2: 0000000000000909 o3: 0000000000000000
> [ 821.414586] o4: 0000000000400000 o5: 0000000000753a88 sp: fffff8004bb6f201 ret_pc: 00000000004c08fc
> [ 821.525433] RPC: <exit_mmap+0x13c/0x160>
> [ 821.574888] l0: 00000000700348a0 l1: 00000000700351c8 l2: 0000000070033dc0 l3: 0000000070034dc8
> [ 821.681687] l4: 000000007001ebc8 l5: 0000000000000000 l6: 00000000000001f8 l7: 0000000070034000
> [ 821.788578] i0: fffff8006e381220 i1: fffff8006e381270 i2: 00000000007568b0 i3: 0000000000100000
> [ 821.895400] i4: 0000000000000020 i5: 0000000000000000 i6: fffff8004bb6f321 i7: 000000000044d82c
> [ 822.002370] I7: <mmput.part.57+0xc/0xc0>
> [ 822.051791] Call Trace:
> [ 822.083520] [000000000044d82c] mmput.part.57+0xc/0xc0
> [ 822.147692] [0000000000452b34] exit_mm+0xf4/0x160
> [ 822.207623] [00000000004548cc] do_exit+0x22c/0x320
> [ 822.268439] [0000000000454b28] do_group_exit+0x28/0xc0
> [ 822.333479] [0000000000454bd4] SyS_exit_group+0x14/0x20
> [ 822.399437] [0000000000406134] linux_sparc_syscall32+0x34/0x40
> [ 822.472848] Disabling lock debugging due to kernel taint
> [ 822.538820] Caller[000000000044d82c]: mmput.part.57+0xc/0xc0
> [ 822.609026] Caller[0000000000452b34]: exit_mm+0xf4/0x160
> [ 822.674979] Caller[00000000004548cc]: do_exit+0x22c/0x320
> [ 822.741901] Caller[0000000000454b28]: do_group_exit+0x28/0xc0
> [ 822.813052] Caller[0000000000454bd4]: SyS_exit_group+0x14/0x20
> [ 822.885145] Caller[0000000000406134]: linux_sparc_syscall32+0x34/0x40
> [ 822.964530] Caller[0000000070012248]: 0x70012248
> [ 823.021965] Instruction DUMP: 92102909 7ffd9d81 90122288 <91d02005> 30680006 01000000 01000000 01000000 01000000
> [ 823.153374] Fixing recursive fault but reboot is needed!
Thanks for the report. I tried but failed to find anything useful to
say about it. Whilst it has occasionally indicated bugs in vma or page
table handling (which is why we inserted that BUG_ON in the first place),
I think it's more likely to indicate bad memory or memory corruption
nowadays. I'll send in a patch to change the BUG_ON to WARN_ON, but
that won't be much comfort. If you are ever able to reproduce it, that
would be interesting (but I see that you already tried without success).
Thanks,
Hugh
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