segfault in pth_mutex_release in shadow thread #402
Description
Thread 1 "shadow" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7876b92f3ea0 (LWP 27191)]
0x00007876b172adcf in ?? ()
(gdb) bt
#0 0x00007876b172adcf in ?? ()
#1 0x000061e340240e00 in ?? ()
#2 0x000000000000000f in ?? ()
#3 0x00007876b0acac48 in ?? ()
#4 0x00007876b9133c04 in get_current_dtv (tp=<optimized out>) at /home/user/Projects/shadow/src/external/elf-loader/vdl-tls.c:306
#5 vdl_tls_get_addr_fast (module=132451165579872, offset=132451307981912) at /home/user/Projects/shadow/src/external/elf-loader/vdl-tls.c:615
#6 0x00007876b0acab98 in ?? ()
#7 0x00007876b0acab40 in ?? ()
#8 0x00007876b17376e2 in ?? ()
#9 0x000061e34023bb30 in ?? ()
#10 0x000061e33ece2e7b in pth_mutex_release (mutex=0x61e3402420d0) at /home/user/Projects/shadow/src/external/rpth/pth_sync.c:122
#11 0x0000000000000019 in ?? ()
#12 0x0000000000000000 in ?? ()
(gdb) info thread
Id Target Id Frame
* 1 Thread 0x7876b92f3ea0 (LWP 27191) "shadow" 0x00007876b172adcf in ?? ()
2 Thread 0x7876b23ce700 (LWP 27193) "logger-helper" syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
(gdb) info registers
rax 0x7876b9298c58 132451307981912
rbx 0x7876b9298c58 132451307981912
rcx 0x3 3
rdx 0x7876b933c948 132451308652872
rsi 0x0 0
rdi 0x0 0
rbp 0x7876b0acaa60 0x7876b0acaa60
rsp 0x7876b0acaa10 0x7876b0acaa10
r8 0x0 0
r9 0x30 48
r10 0x30 48
r11 0x202 514
r12 0x7876b9298c58 132451307981912
r13 0x19 25
r14 0x7876b0acab98 132451165580184
r15 0xd 13
rip 0x7876b172adcf 0x7876b172adcf
eflags 0x10246 [ PF ZF IF RF ]
cs 0xe033 57395
ss 0xe02b 57387
ds 0x0 0
es 0x0 0
fs 0x0 0
gs 0x0 0
(gdb)
TL;DR
I'm running the shadow master branch revision 3ba4873 and https://github.com/dhuseby/shadow-rust-test revision 4d4f6d9. I'm running shadow using the shadow-rust-test.xml config in the shadow-rust-test repo. The shadow thread segfaults somewhere in get_current_dtv in the elf loader. I haven't had time to really dig into it yet. Just wanted to put it here first.