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To: David Marchand <david.marchand@redhat.com>
CC: dev <dev@dpdk.org>, "Wang, Yipeng1" <yipeng1.wang@intel.com>, "Gobriel,
Sameh" <sameh.gobriel@intel.com>, Bruce Richardson
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From: "Medvedkin, Vladimir" <vladimir.medvedkin@intel.com>
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Subject: Re: [dpdk-stable] [PATCH] test/hash: fix buffer overflow
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Hi David,
On 11/10/2021 13:03, David Marchand wrote:
> On Fri, Oct 8, 2021 at 11:28 PM Vladimir Medvedkin
> <vladimir.medvedkin@intel.com> wrote:
>>
>> This patch fixes buffer overflow reported by ASAN,
>> please reference https://bugs.dpdk.org/show_bug.cgi?id=818
>>
>> Some tests for the rte_hash table use the rte_jhash_32b() as
>> the hash function. This hash function interprets the length
>> argument in units of 4 bytes.
>>
>> This patch divides configured key length by 4 in cases when
>> rte_jhash_32b() is used.
>>
>> Bugzilla ID: 818
>> Fixes: af75078fece3 ("first public release")
>> Cc: stable@dpdk.org
>>
>
> With patch applied, ASan reports another issue.
> Did you test your fix with ASan?
>
You're right, for some reason ASAN wasn't enabled.
I applied patch and built running .ci/linux-build.sh,
also I build with CFLAGS + LDFLAGS.
Bruce suggested to use meson options instead of using CFLAGS, so
meson configure build -Db_sanitize=address -Db_lundef=false
works fine.
I'll sent v2 for this.
> From GHA, with https://patchwork.dpdk.org/project/dpdk/patch/20211002162432.4348-4-david.marchand@redhat.com/
> applied:
>
>
> 30/94 DPDK:fast-tests / hash_autotest FAIL 0.87 s (exit status 1)
>
> --- command ---
> DPDK_TEST='hash_autotest'
> /home/runner/work/dpdk/dpdk/build/app/test/dpdk-test -l 0-1
> --file-prefix=hash_autotest
> --- stdout ---
> RTE>>hash_autotest
> --- stderr ---
> EAL: Detected CPU lcores: 2
> EAL: Detected NUMA nodes: 1
> EAL: Detected shared linkage of DPDK
> EAL: WARNING! Base virtual address hint (0x100005000 !=
> 0x7fa4a7cda000) not respected!
> EAL: This may cause issues with mapping memory into secondary processes
> EAL: Multi-process socket /var/run/dpdk/hash_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 !=
> 0x7fa49688f000) not respected!
> EAL: This may cause issues with mapping memory into secondary processes
> EAL: WARNING! Base virtual address hint (0x100011000 !=
> 0x7fa49682e000) not respected!
> EAL: This may cause issues with mapping memory into secondary processes
> EAL: WARNING! Base virtual address hint (0x100a12000 !=
> 0x7fa094a00000) not respected!
> EAL: This may cause issues with mapping memory into secondary processes
> EAL: WARNING! Base virtual address hint (0x100c17000 !=
> 0x7fa49669f000) not respected!
> EAL: This may cause issues with mapping memory into secondary processes
> EAL: WARNING! Base virtual address hint (0x101618000 !=
> 0x7f9c94800000) not respected!
> EAL: This may cause issues with mapping memory into secondary processes
> EAL: WARNING! Base virtual address hint (0x10181d000 !=
> 0x7fa49663e000) not respected!
> EAL: This may cause issues with mapping memory into secondary processes
> EAL: WARNING! Base virtual address hint (0x10221e000 !=
> 0x7f9894600000) not respected!
> EAL: This may cause issues with mapping memory into secondary processes
> EAL: WARNING! Base virtual address hint (0x102423000 !=
> 0x7fa49649f000) not respected!
> EAL: This may cause issues with mapping memory into secondary processes
> EAL: WARNING! Base virtual address hint (0x102e24000 !=
> 0x7f9494400000) not respected!
> EAL: This may cause issues with mapping memory into secondary processes
> APP: HPET is not enabled, using TSC as default timer
> =================================================================
> ==26840==ERROR: AddressSanitizer: global-buffer-overflow on address
> 0x00000372e3e0 at pc 0x0000014b0eb8 bp 0x7fff80e49990 sp
> 0x7fff80e49988
> READ of size 4 at 0x00000372e3e0 thread T0
> #0 0x14b0eb7 in __rte_jhash_2hashes
> /home/runner/work/dpdk/dpdk/build/../lib/hash/rte_jhash.h:137:9
> #1 0x14b0130 in rte_jhash_2hashes
> /home/runner/work/dpdk/dpdk/build/../lib/hash/rte_jhash.h:238:2
> #2 0x14b0051 in rte_jhash
> /home/runner/work/dpdk/dpdk/build/../lib/hash/rte_jhash.h:284:2
> #3 0x7fa4a38c7627 in rte_hash_hash
> /home/runner/work/dpdk/dpdk/build/../lib/hash/rte_cuckoo_hash.c:538:9
> #4 0x7fa4a38d6672 in rte_hash_add_key
> /home/runner/work/dpdk/dpdk/build/../lib/hash/rte_cuckoo_hash.c:1212:46
> #5 0x14a06db in test_five_keys
> /home/runner/work/dpdk/dpdk/build/../app/test/test_hash.c:715:12
> #6 0x149deda in test_hash
> /home/runner/work/dpdk/dpdk/build/../app/test/test_hash.c:2207:6
> #7 0x4d61f6 in cmd_autotest_parsed
> /home/runner/work/dpdk/dpdk/build/../app/test/commands.c:71:10
> #8 0x7fa4a44356c5 in cmdline_parse
> /home/runner/work/dpdk/dpdk/build/../lib/cmdline/cmdline_parse.c:290:3
> #9 0x7fa4a442e8d5 in cmdline_valid_buffer
> /home/runner/work/dpdk/dpdk/build/../lib/cmdline/cmdline.c:26:8
> #10 0x7fa4a443ff07 in rdline_char_in
> /home/runner/work/dpdk/dpdk/build/../lib/cmdline/cmdline_rdline.c:421:5
> #11 0x7fa4a442f03f in cmdline_in
> /home/runner/work/dpdk/dpdk/build/../lib/cmdline/cmdline.c:149:9
> #12 0x5ac71e in main
> /home/runner/work/dpdk/dpdk/build/../app/test/test.c:214:8
> #13 0x7fa49ca42bf6 in __libc_start_main
> /build/glibc-S9d2JN/glibc-2.27/csu/../csu/libc-start.c:310
> #14 0x42eaa9 in _start
> (/home/runner/work/dpdk/dpdk/build/app/test/dpdk-test+0x42eaa9)
>
> 0x00000372e3e1 is located 0 bytes to the right of global variable
> 'keys' defined in '../app/test/test_hash.c:115:24' (0x372e3a0) of size
> 65
> SUMMARY: AddressSanitizer: global-buffer-overflow
> /home/runner/work/dpdk/dpdk/build/../lib/hash/rte_jhash.h:137:9 in
> __rte_jhash_2hashes
> Shadow bytes around the buggy address:
> 0x0000806ddc20: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
> 0x0000806ddc30: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
> 0x0000806ddc40: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
> 0x0000806ddc50: f9 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 f9 f9 f9 f9
> 0x0000806ddc60: 01 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 f9 f9
> =>0x0000806ddc70: f9 f9 f9 f9 00 00 00 00 00 00 00 00[01]f9 f9 f9
> 0x0000806ddc80: f9 f9 f9 f9 00 00 00 00 00 00 f9 f9 f9 f9 f9 f9
> 0x0000806ddc90: 00 00 f9 f9 f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9
> 0x0000806ddca0: 00 00 00 00 00 00 00 00 04 f9 f9 f9 f9 f9 f9 f9
> 0x0000806ddcb0: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
> 0x0000806ddcc0: f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9 f9
> 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
> ==26840==ABORTING
> -------
>
>
--
Regards,
Vladimir