[dpdk-dev] [Bug 819] [asan] lpm: buffer overflow in lpm6_autotest

[dpdk-dev] [Bug 819] [asan] lpm: buffer overflow in lpm6_autotest

[bugzilla]

https://bugs.dpdk.org/show_bug.cgi?id=819

            Bug ID: 819
           Summary: [asan] lpm: buffer overflow in lpm6_autotest
           Product: DPDK
           Version: unspecified
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: other
          Assignee: dev@dpdk.org
          Reporter: david.marchand@redhat.com
  Target Milestone: ---

This issue was caught by ASAN.
To reproduce, please look at the last patch of series 18997:

https://github.com/ovsrobot/dpdk/commit/series_18997


36/94 DPDK:fast-tests / lpm6_autotest         FAIL     6.54 s (exit status 1)

--- command ---
DPDK_TEST='lpm6_autotest' /home/runner/work/dpdk/dpdk/build/app/test/dpdk-test
-l 0-1 --file-prefix=lpm6_autotest
--- stdout ---
RTE>>lpm6_autotest
--- stderr ---
EAL: Detected 2 lcore(s)
EAL: Detected 1 NUMA nodes
EAL: Detected shared linkage of DPDK
EAL: WARNING! Base virtual address hint (0x100005000 != 0x7f26bdb3b000) not
respected!
EAL:    This may cause issues with mapping memory into secondary processes
EAL: Multi-process socket /var/run/dpdk/lpm6_autotest/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: No available 1048576 kB hugepages reported
EAL: VFIO support initialized
EAL: WARNING! Base virtual address hint (0x10000b000 != 0x7f26ac739000) not
respected!
EAL:    This may cause issues with mapping memory into secondary processes
EAL: WARNING! Base virtual address hint (0x100011000 != 0x7f26ac59f000) not
respected!
EAL:    This may cause issues with mapping memory into secondary processes
EAL: WARNING! Base virtual address hint (0x100a12000 != 0x7f22aaa00000) not
respected!
EAL:    This may cause issues with mapping memory into secondary processes
EAL: WARNING! Base virtual address hint (0x100c17000 != 0x7f26ac53e000) not
respected!
EAL:    This may cause issues with mapping memory into secondary processes
EAL: WARNING! Base virtual address hint (0x101618000 != 0x7f1eaa800000) not
respected!
EAL:    This may cause issues with mapping memory into secondary processes
EAL: WARNING! Base virtual address hint (0x10181d000 != 0x7f26ac39f000) not
respected!
EAL:    This may cause issues with mapping memory into secondary processes
EAL: WARNING! Base virtual address hint (0x10221e000 != 0x7f1aaa600000) not
respected!
EAL:    This may cause issues with mapping memory into secondary processes
EAL: WARNING! Base virtual address hint (0x102423000 != 0x7f26ac33e000) not
respected!
EAL:    This may cause issues with mapping memory into secondary processes
EAL: WARNING! Base virtual address hint (0x102e24000 != 0x7f16aa400000) not
respected!
EAL:    This may cause issues with mapping memory into secondary processes
APP: HPET is not enabled, using TSC as default timer
RING: Cannot reserve memory
HASH: memory allocation failed
LPM: LPM rules hash table allocation failed: File exists
(17)=================================================================
==25187==ERROR: AddressSanitizer: stack-buffer-overflow on address
0x7ffdded97cf0 at pc 0x7f26b76a2206 bp 0x7ffdded972b0 sp 0x7ffdded972a8
READ of size 4 at 0x7ffdded97cf0 thread T0
    #0 0x7f26b76a2205 in __rte_jhash_2hashes
/home/runner/work/dpdk/dpdk/build/../lib/hash/rte_jhash.h:129:9
    #1 0x7f26b76a1690 in rte_jhash_2hashes
/home/runner/work/dpdk/dpdk/build/../lib/hash/rte_jhash.h:238:2
    #2 0x7f26b76a15be in rte_jhash
/home/runner/work/dpdk/dpdk/build/../lib/hash/rte_jhash.h:284:2
    #3 0x7f26b767d042 in rule_hash
/home/runner/work/dpdk/dpdk/build/../lib/lpm/rte_lpm6.c:160:9
    #4 0x7f26b9727627 in rte_hash_hash
/home/runner/work/dpdk/dpdk/build/../lib/hash/rte_cuckoo_hash.c:538:9
    #5 0x7f26b9736926 in rte_hash_lookup_data
/home/runner/work/dpdk/dpdk/build/../lib/hash/rte_cuckoo_hash.c:1449:45
    #6 0x7f26b76a6982 in rule_find_with_key
/home/runner/work/dpdk/dpdk/build/../lib/lpm/rte_lpm6.c:454:8
    #7 0x7f26b769b4dd in rule_add
/home/runner/work/dpdk/dpdk/build/../lib/lpm/rte_lpm6.c:497:15
    #8 0x7f26b767da05 in rte_lpm6_add
/home/runner/work/dpdk/dpdk/build/../lib/lpm/rte_lpm6.c:882:20
    #9 0x16d1ef9 in test9
/home/runner/work/dpdk/dpdk/build/../app/test/test_lpm6.c:456:11
    #10 0x16de5cc in test_lpm6
/home/runner/work/dpdk/dpdk/build/../app/test/test_lpm6.c:1784:12
    #11 0x4d6166 in cmd_autotest_parsed
/home/runner/work/dpdk/dpdk/build/../app/test/commands.c:71:10
    #12 0x7f26ba2956c5 in cmdline_parse
/home/runner/work/dpdk/dpdk/build/../lib/cmdline/cmdline_parse.c:290:3
    #13 0x7f26ba28e8d5 in cmdline_valid_buffer
/home/runner/work/dpdk/dpdk/build/../lib/cmdline/cmdline.c:26:8
    #14 0x7f26ba29ff07 in rdline_char_in
/home/runner/work/dpdk/dpdk/build/../lib/cmdline/cmdline_rdline.c:421:5
    #15 0x7f26ba28f03f in cmdline_in
/home/runner/work/dpdk/dpdk/build/../lib/cmdline/cmdline.c:149:9
    #16 0x5ac68e in main
/home/runner/work/dpdk/dpdk/build/../app/test/test.c:214:8
    #17 0x7f26b28ecbf6 in __libc_start_main
/build/glibc-S9d2JN/glibc-2.27/csu/../csu/libc-start.c:310
    #18 0x42ea19 in _start
(/home/runner/work/dpdk/dpdk/build/app/test/dpdk-test+0x42ea19)

Address 0x7ffdded97cf0 is located in stack of thread T0 at offset 48 in frame
    #0 0x7f26b769b36f in rule_add
/home/runner/work/dpdk/dpdk/build/../lib/lpm/rte_lpm6.c:488

  This frame has 2 object(s):
    [32, 49) 'rule_key' (line 490) <== Memory access at offset 48 partially
overflows this variable
    [96, 100) 'unused' (line 491)
HINT: this may be a false positive if your program uses some custom stack
unwind mechanism, swapcontext or vfork
      (longjmp and C++ exceptions *are* supported)
SUMMARY: AddressSanitizer: stack-buffer-overflow
/home/runner/work/dpdk/dpdk/build/../lib/hash/rte_jhash.h:129:9 in
__rte_jhash_2hashes
Shadow bytes around the buggy address:
  0x10003bdaaf40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10003bdaaf50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10003bdaaf60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10003bdaaf70: f1 f1 f1 f1 00 f3 f3 f3 00 00 00 00 00 00 00 00
  0x10003bdaaf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x10003bdaaf90: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00[01]f2
  0x10003bdaafa0: f2 f2 f2 f2 04 f3 f3 f3 00 00 00 00 00 00 00 00
  0x10003bdaafb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x10003bdaafc0: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 f2 f2 f2
  0x10003bdaafd0: 04 f2 00 00 f3 f3 f3 f3 00 00 00 00 00 00 00 00
  0x10003bdaafe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
  Addressable:           00
  Partially addressable: 01 02 03 04 05 06 07 
  Heap left redzone:       fa
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Container overflow:      fc
  Array cookie:            ac
  Intra object redzone:    bb
  ASan internal:           fe
  Left alloca redzone:     ca
  Right alloca redzone:    cb
  Shadow gap:              cc
==25187==ABORTING

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