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36 lines
1022 B
36 lines
1022 B
1 month ago
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--- qemu-2.10.0-rc3-clean/linux-user/syscall.c 2017-08-15 11:39:41.000000000 -0700
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+++ qemu-2.10.0-rc3/linux-user/syscall.c 2017-08-22 14:34:03.193088186 -0700
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@@ -116,6 +116,8 @@
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#include "qemu.h"
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+extern unsigned int afl_forksrv_pid;
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+
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#ifndef CLONE_IO
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#define CLONE_IO 0x80000000 /* Clone io context */
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#endif
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@@ -11688,8 +11690,21 @@
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break;
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case TARGET_NR_tgkill:
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- ret = get_errno(safe_tgkill((int)arg1, (int)arg2,
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- target_to_host_signal(arg3)));
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+
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+ {
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+ int pid = (int)arg1,
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+ tgid = (int)arg2,
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+ sig = (int)arg3;
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+
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+ /* Not entirely sure if the below is correct for all architectures. */
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+
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+ if(afl_forksrv_pid && afl_forksrv_pid == pid && sig == SIGABRT)
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+ pid = tgid = getpid();
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+
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+ ret = get_errno(safe_tgkill(pid, tgid, target_to_host_signal(sig)));
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+
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+ }
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+
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break;
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#ifdef TARGET_NR_set_robust_list
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