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build: Fix srcdir != builddir from git #6

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build: Fix srcdir != builddir from git #6

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cgwalters
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@pcmoore
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pcmoore commented Jun 11, 2015

In general we request that submissions go through the mailing list and include a sign-off, see the SUBMITTING_PATCHES document for more information. I can make an exception to the mailing list requirement, but I do need a sign-off from you as described in the SUBMITTING_PATCHES document (similar to the Linux Kernel).

@pcmoore pcmoore self-assigned this Jun 11, 2015
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Sure, I added a SOB ⬆️

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pcmoore commented Jun 12, 2015

Closing this out as the code has been merged to master 9b16b91 .

@pcmoore pcmoore closed this Jun 12, 2015
@pcmoore pcmoore added the bug label Jul 22, 2015
giuseppe added a commit to giuseppe/libseccomp that referenced this pull request Mar 18, 2021
@giuseppe
bpf: fix uninitialized value usage
9777751 
it was reported by clang with the option -fsanitize=memory:

Uninitialized bytes in MemcmpInterceptorCommon at offset 0 inside [0x7070000002a0, 56)
==3791089==WARNING: MemorySanitizer: use-of-uninitialized-value
    #0 0x482a2c in memcmp (fuzzer+0x482a2c)
    seccomp#1 0x7fed2f120ebb in _hsh_add src/libseccomp/src/gen_bpf.c:598:9
    seccomp#2 0x7fed2f121715 in _gen_bpf_action_hsh src/libseccomp/src/gen_bpf.c:796:6
    seccomp#3 0x7fed2f121a53 in _gen_bpf_node src/libseccomp/src/gen_bpf.c:831:11
    seccomp#4 0x7fed2f121a53 in _gen_bpf_chain.isra.0 src/libseccomp/src/gen_bpf.c:1072:13
    seccomp#5 0x7fed2f121f16 in _gen_bpf_chain_lvl_res src/libseccomp/src/gen_bpf.c:977:12
    seccomp#6 0x7fed2f121c74 in _gen_bpf_chain.isra.0 src/libseccomp/src/gen_bpf.c:1124:12
    seccomp#7 0x7fed2f12253c in _gen_bpf_syscall src/libseccomp/src/gen_bpf.c:1520:10
    seccomp#8 0x7fed2f12253c in _gen_bpf_syscalls src/libseccomp/src/gen_bpf.c:1615:18
    seccomp#9 0x7fed2f12253c in _gen_bpf_arch src/libseccomp/src/gen_bpf.c:1683:7
    seccomp#10 0x7fed2f12253c in _gen_bpf_build_bpf src/libseccomp/src/gen_bpf.c:2056:11
    seccomp#11 0x7fed2f12253c in gen_bpf_generate src/libseccomp/src/gen_bpf.c:2321:7
    seccomp#12 0x7fed2f11f41c in seccomp_export_bpf src/libseccomp/src/api.c:724:7

  Uninitialized value was created by a heap allocation
    #0 0x4547ef in realloc (fuzzer+0x4547ef)
    seccomp#1 0x7fed2f121244 in _blk_resize src/libseccomp/src/gen_bpf.c:362:8
    seccomp#2 0x7fed2f121244 in _blk_append src/libseccomp/src/gen_bpf.c:394:6

Signed-off-by: Giuseppe Scrivano <[email protected]>
@giuseppe giuseppe mentioned this pull request Mar 18, 2021
Merged
giuseppe added a commit to giuseppe/libseccomp that referenced this pull request Mar 18, 2021
@giuseppe
bpf: fix uninitialized value usage
064e793 
it was reported by clang with the option -fsanitize=memory:

Uninitialized bytes in MemcmpInterceptorCommon at offset 0 inside [0x7070000002a0, 56)
==3791089==WARNING: MemorySanitizer: use-of-uninitialized-value
    #0 0x482a2c in memcmp (fuzzer+0x482a2c)
    seccomp#1 0x7fed2f120ebb in _hsh_add src/libseccomp/src/gen_bpf.c:598:9
    seccomp#2 0x7fed2f121715 in _gen_bpf_action_hsh src/libseccomp/src/gen_bpf.c:796:6
    seccomp#3 0x7fed2f121a53 in _gen_bpf_node src/libseccomp/src/gen_bpf.c:831:11
    seccomp#4 0x7fed2f121a53 in _gen_bpf_chain.isra.0 src/libseccomp/src/gen_bpf.c:1072:13
    seccomp#5 0x7fed2f121f16 in _gen_bpf_chain_lvl_res src/libseccomp/src/gen_bpf.c:977:12
    seccomp#6 0x7fed2f121c74 in _gen_bpf_chain.isra.0 src/libseccomp/src/gen_bpf.c:1124:12
    seccomp#7 0x7fed2f12253c in _gen_bpf_syscall src/libseccomp/src/gen_bpf.c:1520:10
    seccomp#8 0x7fed2f12253c in _gen_bpf_syscalls src/libseccomp/src/gen_bpf.c:1615:18
    seccomp#9 0x7fed2f12253c in _gen_bpf_arch src/libseccomp/src/gen_bpf.c:1683:7
    seccomp#10 0x7fed2f12253c in _gen_bpf_build_bpf src/libseccomp/src/gen_bpf.c:2056:11
    seccomp#11 0x7fed2f12253c in gen_bpf_generate src/libseccomp/src/gen_bpf.c:2321:7
    seccomp#12 0x7fed2f11f41c in seccomp_export_bpf src/libseccomp/src/api.c:724:7

  Uninitialized value was created by a heap allocation
    #0 0x4547ef in realloc (fuzzer+0x4547ef)
    seccomp#1 0x7fed2f121244 in _blk_resize src/libseccomp/src/gen_bpf.c:362:8
    seccomp#2 0x7fed2f121244 in _blk_append src/libseccomp/src/gen_bpf.c:394:6

Signed-off-by: Giuseppe Scrivano <[email protected]>
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@cgwalters @pcmoore