forked from luck/tmp_suning_uos_patched
e020d5bd8a
mm could be removed from current task struct, using previous vma->vm_mm
It will crash on blackfin after updated to Linux 3.15. The commit "mm:
per-thread vma caching" caused the crash. mm could be removed from
current task struct before
mmput()->
exit_mmap()->
delete_vma_from_mm()
the detailed fault information:
NULL pointer access
Kernel OOPS in progress
Deferred Exception context
CURRENT PROCESS:
COMM=modprobe PID=278 CPU=0
invalid mm
return address: [0x000531de]; contents of:
0x000531b0: c727 acea 0c42 181d 0000 0000 0000 a0a8
0x000531c0: b090 acaa 0c42 1806 0000 0000 0000 a0e8
0x000531d0: b0d0 e801 0000 05b3 0010 e522 0046 [a090]
0x000531e0: 6408 b090 0c00 17cc 3042 e3ff f37b 2fc8
CPU: 0 PID: 278 Comm: modprobe Not tainted 3.15.0-ADI-2014R1-pre-00345-gea9f446 #25
task: 0572b720 ti: 0569e000 task.ti: 0569e000
Compiled for cpu family 0x27fe (Rev 0), but running on:0x0000 (Rev 0)
ADSP-BF609-0.0 500(MHz CCLK) 125(MHz SCLK) (mpu off)
Linux version 3.15.0-ADI-2014R1-pre-00345-gea9f446 (steven@steven-OptiPlex-390) (gcc version 4.3.5 (ADI-trunk/svn-5962) ) #25 Tue Jun 10 17:47:46 CST 2014
SEQUENCER STATUS: Not tainted
SEQSTAT: 00000027 IPEND: 8008 IMASK: ffff SYSCFG: 2806
EXCAUSE : 0x27
physical IVG3 asserted : <0xffa00744> { _trap + 0x0 }
physical IVG15 asserted : <0xffa00d68> { _evt_system_call + 0x0 }
logical irq 6 mapped : <0xffa003bc> { _bfin_coretmr_interrupt + 0x0 }
logical irq 7 mapped : <0x00008828> { _bfin_fault_routine + 0x0 }
logical irq 11 mapped : <0x00007724> { _l2_ecc_err + 0x0 }
logical irq 13 mapped : <0x00008828> { _bfin_fault_routine + 0x0 }
logical irq 39 mapped : <0x00150788> { _bfin_twi_interrupt_entry + 0x0 }
logical irq 40 mapped : <0x00150788> { _bfin_twi_interrupt_entry + 0x0 }
RETE: <0x00000000> /* Maybe null pointer? */
RETN: <0x0569fe50> /* kernel dynamic memory (maybe user-space) */
RETX: <0x00000480> /* Maybe fixed code section */
RETS: <0x00053384> { _exit_mmap + 0x28 }
PC : <0x000531de> { _delete_vma_from_mm + 0x92 }
DCPLB_FAULT_ADDR: <0x00000008> /* Maybe null pointer? */
ICPLB_FAULT_ADDR: <0x000531de> { _delete_vma_from_mm + 0x92 }
PROCESSOR STATE:
R0 : 00000004 R1 : 0569e000 R2 : 00bf3db4 R3 : 00000000
R4 : 057f9800 R5 : 00000001 R6 : 0569ddd0 R7 : 0572b720
P0 : 0572b854 P1 : 00000004 P2 : 00000000 P3 : 0569dda0
P4 : 0572b720 P5 : 0566c368 FP : 0569fe5c SP : 0569fd74
LB0: 057f523f LT0: 057f523e LC0: 00000000
LB1: 0005317c LT1: 00053172 LC1: 00000002
B0 : 00000000 L0 : 00000000 M0 : 0566f5bc I0 : 00000000
B1 : 00000000 L1 : 00000000 M1 : 00000000 I1 : ffffffff
B2 : 00000001 L2 : 00000000 M2 : 00000000 I2 : 00000000
B3 : 00000000 L3 : 00000000 M3 : 00000000 I3 : 057f8000
A0.w: 00000000 A0.x: 00000000 A1.w: 00000000 A1.x: 00000000
USP : 056ffcf8 ASTAT: 02003024
Hardware Trace:
0 Target : <0x00003fb8> { _trap_c + 0x0 }
Source : <0xffa006d8> { _exception_to_level5 + 0xa0 } JUMP.L
1 Target : <0xffa00638> { _exception_to_level5 + 0x0 }
Source : <0xffa004f2> { _bfin_return_from_exception + 0x6 } RTX
2 Target : <0xffa004ec> { _bfin_return_from_exception + 0x0 }
Source : <0xffa00590> { _ex_trap_c + 0x70 } JUMP.S
3 Target : <0xffa00520> { _ex_trap_c + 0x0 }
Source : <0xffa0076e> { _trap + 0x2a } JUMP (P4)
4 Target : <0xffa00744> { _trap + 0x0 }
FAULT : <0x000531de> { _delete_vma_from_mm + 0x92 } P0 = W[P2 + 2]
Source : <0x000531da> { _delete_vma_from_mm + 0x8e } P2 = [P4 + 0x18]
5 Target : <0x000531da> { _delete_vma_from_mm + 0x8e }
Source : <0x00053176> { _delete_vma_from_mm + 0x2a } IF CC JUMP pcrel
6 Target : <0x0005314c> { _delete_vma_from_mm + 0x0 }
Source : <0x00053380> { _exit_mmap + 0x24 } JUMP.L
7 Target : <0x00053378> { _exit_mmap + 0x1c }
Source : <0x00053394> { _exit_mmap + 0x38 } IF !CC JUMP pcrel (BP)
8 Target : <0x00053390> { _exit_mmap + 0x34 }
Source : <0xffa020e0> { __cond_resched + 0x20 } RTS
9 Target : <0xffa020c0> { __cond_resched + 0x0 }
Source : <0x0005338c> { _exit_mmap + 0x30 } JUMP.L
10 Target : <0x0005338c> { _exit_mmap + 0x30 }
Source : <0x0005333a> { _delete_vma + 0xb2 } RTS
11 Target : <0x00053334> { _delete_vma + 0xac }
Source : <0x0005507a> { _kmem_cache_free + 0xba } RTS
12 Target : <0x00055068> { _kmem_cache_free + 0xa8 }
Source : <0x0005505e> { _kmem_cache_free + 0x9e } IF !CC JUMP pcrel (BP)
13 Target : <0x00055052> { _kmem_cache_free + 0x92 }
Source : <0x0005501a> { _kmem_cache_free + 0x5a } IF CC JUMP pcrel
14 Target : <0x00054ff4> { _kmem_cache_free + 0x34 }
Source : <0x00054fce> { _kmem_cache_free + 0xe } IF CC JUMP pcrel (BP)
15 Target : <0x00054fc0> { _kmem_cache_free + 0x0 }
Source : <0x00053330> { _delete_vma + 0xa8 } JUMP.L
Kernel Stack
Stack info:
SP: [0x0569ff24] <0x0569ff24> /* kernel dynamic memory (maybe user-space) */
Memory from 0x0569ff20 to 056a0000
0569ff20: 00000001 [04e8da5a] 00008000 00000000 00000000 056a0000 04e8da5a 04e8da5a
0569ff40: 04eb9eea ffa00dce 02003025 04ea09c5 057f523f 04ea09c4 057f523e 00000000
0569ff60: 00000000 00000000 00000000 00000000 00000000 00000000 00000001 00000000
0569ff80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
0569ffa0: 0566f5bc 057f8000 057f8000 00000001 04ec0170 056ffcf8 056ffd04 057f9800
0569ffc0: 04d1d498 057f9800 057f8fe4 057f8ef0 00000001 057f928c 00000001 00000001
0569ffe0: 057f9800 00000000 00000008 00000007 00000001 00000001 00000001 <00002806>
Return addresses in stack:
address : <0x00002806> { _show_cpuinfo + 0x2d2 }
Modules linked in:
Kernel panic - not syncing: Kernel exception
[ end Kernel panic - not syncing: Kernel exception
Signed-off-by: Steven Miao <realmz6@gmail.com>
Acked-by: Davidlohr Bueso <davidlohr@hp.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: <stable@vger.kernel.org> [3.15.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|---|---|---|
| .. | ||
| backing-dev.c | ||
| balloon_compaction.c | ||
| bootmem.c | ||
| cleancache.c | ||
| compaction.c | ||
| debug-pagealloc.c | ||
| dmapool.c | ||
| early_ioremap.c | ||
| fadvise.c | ||
| failslab.c | ||
| filemap_xip.c | ||
| filemap.c | ||
| fremap.c | ||
| frontswap.c | ||
| gup.c | ||
| highmem.c | ||
| huge_memory.c | ||
| hugetlb_cgroup.c | ||
| hugetlb.c | ||
| hwpoison-inject.c | ||
| init-mm.c | ||
| internal.h | ||
| interval_tree.c | ||
| iov_iter.c | ||
| Kconfig | ||
| Kconfig.debug | ||
| kmemcheck.c | ||
| kmemleak-test.c | ||
| kmemleak.c | ||
| ksm.c | ||
| list_lru.c | ||
| maccess.c | ||
| madvise.c | ||
| Makefile | ||
| memblock.c | ||
| memcontrol.c | ||
| memory_hotplug.c | ||
| memory-failure.c | ||
| memory.c | ||
| mempolicy.c | ||
| mempool.c | ||
| migrate.c | ||
| mincore.c | ||
| mlock.c | ||
| mm_init.c | ||
| mmap.c | ||
| mmu_context.c | ||
| mmu_notifier.c | ||
| mmzone.c | ||
| mprotect.c | ||
| mremap.c | ||
| msync.c | ||
| nobootmem.c | ||
| nommu.c | ||
| oom_kill.c | ||
| page_alloc.c | ||
| page_cgroup.c | ||
| page_io.c | ||
| page_isolation.c | ||
| page-writeback.c | ||
| pagewalk.c | ||
| percpu-km.c | ||
| percpu-vm.c | ||
| percpu.c | ||
| pgtable-generic.c | ||
| process_vm_access.c | ||
| quicklist.c | ||
| readahead.c | ||
| rmap.c | ||
| shmem.c | ||
| slab_common.c | ||
| slab.c | ||
| slab.h | ||
| slob.c | ||
| slub.c | ||
| sparse-vmemmap.c | ||
| sparse.c | ||
| swap_state.c | ||
| swap.c | ||
| swapfile.c | ||
| truncate.c | ||
| util.c | ||
| vmacache.c | ||
| vmalloc.c | ||
| vmpressure.c | ||
| vmscan.c | ||
| vmstat.c | ||
| workingset.c | ||
| zbud.c | ||
| zsmalloc.c | ||
| zswap.c | ||