Bug#1033656: bt full with dbgsym

Sun Jul 23 15:27:54 BST 2023

Control: affects -1 + minidlna

The same bug affects minidlna:

uwe at crater:~$ gdb /usr/sbin/minidlnad
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Reading symbols from /usr/sbin/minidlnad...
Reading symbols from /usr/lib/debug/.build-id/8d/c7b33336b6d717dcb1c814fff9a3e5a4dba526.debug...
(gdb) run
Starting program: /usr/sbin/minidlnad
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1".

Program received signal SIGILL, Illegal instruction.
hwy::(anonymous namespace)::robust_statistics::CountingSort<unsigned long long> (values=0xbeffecb8, num_values=256)
    at ./hwy/nanobenchmark.cc:214
214	./hwy/nanobenchmark.cc: No such file or directory.
(gdb) disassemble
Dump of assembler code for function hwy::(anonymous namespace)::robust_statistics::CountingSort<unsigned long long>(unsigned long long*, size_t):
   0xb546afb0 <+0>:	stmdb	sp!, {r4, r5, r6, r7, r8, r9, r10, r11, lr}
   0xb546afb4 <+4>:	mov	r9, r1
   0xb546afb6 <+6>:	ldr	r1, [pc, #492]	@ (0xb546b1a4 <hwy::(anonymous namespace)::robust_statistics::CountingSort<unsigned long long>(unsigned long long*, size_t)+500>)
   0xb546afb8 <+8>:	sub	sp, #52	@ 0x34
   0xb546afba <+10>:	ldr	r2, [pc, #492]	@ (0xb546b1a8 <hwy::(anonymous namespace)::robust_statistics::CountingSort<unsigned long long>(unsigned long long*, size_t)+504>)
   0xb546afbc <+12>:	add	r1, pc
=> 0xb546afbe <+14>:	vmov.i32	d16, #0	@ 0x00000000
   0xb546afc2 <+18>:	movs	r6, #0
   0xb546afc4 <+20>:	str	r6, [sp, #16]
   0xb546afc6 <+22>:	ldr	r2, [r1, r2]
   0xb546afc8 <+24>:	ldr	r2, [r2, #0]
   0xb546afca <+26>:	str	r2, [sp, #44]	@ 0x2c
   0xb546afcc <+28>:	mov.w	r2, #0
   0xb546afd0 <+32>:	vstr	d16, [sp, #8]
   0xb546afd4 <+36>:	cmp.w	r9, #0
   0xb546afd8 <+40>:	beq.w	0xb546b180 <hwy::(anonymous namespace)::robust_statistics::CountingSort<unsigned long long>(unsigned long long*, size_t)+464>
   0xb546afdc <+44>:	mov	r4, r0
   0xb546afde <+46>:	mov	r5, r6
   0xb546afe0 <+48>:	mov	r8, r6
   0xb546afe2 <+50>:	mov.w	r10, #1
   0xb546afe6 <+54>:	add.w	r11, sp, #24
   0xb546afea <+58>:	sub.w	r3, r0, #8
   0xb546afee <+62>:	str	r3, [sp, #4]
   0xb546aff0 <+64>:	ldr	r2, [sp, #4]
   0xb546aff2 <+66>:	subs	r3, r5, r6
   0xb546aff4 <+68>:	mov.w	r12, r3, asr #6
   0xb546aff8 <+72>:	asrs	r0, r3, #4
   0xb546affa <+74>:	ldr.w	r1, [r2, #8]!
   0xb546affe <+78>:	cmp.w	r12, #0
   0xb546b002 <+82>:	str	r2, [sp, #4]
   0xb546b004 <+84>:	ldr	r2, [r2, #4]
   0xb546b006 <+86>:	ble.w	0xb546b19a <hwy::(anonymous namespace)::robust_statistics::CountingSort<unsigned long long>(unsigned long long*, size_t)+490>
   0xb546b00a <+90>:	add.w	r12, r6, r12, lsl #6
   0xb546b00e <+94>:	mov	r3, r6
   0xb546b010 <+96>:	b.n	0xb546b03c <hwy::(anonymous namespace)::robust_statistics::CountingSort<unsigned long long>(unsigned long long*, size_t)+140>
   0xb546b012 <+98>:	ldrd	r0, r7, [r3, #16]
--Type <RET> for more, q to quit, c to continue without paging--q
Quit
(gdb) bt
#0  hwy::(anonymous namespace)::robust_statistics::CountingSort<unsigned long long> (values=0xbeffecb8, num_values=256)
    at ./hwy/nanobenchmark.cc:214
#1  0xb546b256 in hwy::(anonymous namespace)::robust_statistics::Mode<unsigned long long> (num_values=256, values=0xbeffecb8)
    at ./hwy/nanobenchmark.cc:286
#2  hwy::(anonymous namespace)::robust_statistics::Mode<unsigned long long, 256> (values=...) at ./hwy/nanobenchmark.cc:292
#3  hwy::platform::TimerResolution () at ./hwy/nanobenchmark.cc:480
#4  0xb5469e0e in __static_initialization_and_destruction_0 (__priority=65535, __initialize_p=1) at ./hwy/nanobenchmark.cc:488
#5  _GLOBAL__sub_I_nanobenchmark.cc(void) () at ./hwy/nanobenchmark.cc:763
#6  0xb6fe444c in call_init (env=0xbefff53c, argv=0xbefff534, argc=1, l=<optimized out>) at dl-init.c:70
#7  call_init (l=<optimized out>, argc=1, argv=0xbefff534, env=0xbefff53c) at dl-init.c:26
#8  0xb6fe44f2 in _dl_init (main_map=0xb6fffa68, argc=1, argv=0xbefff534, env=0xbefff53c) at dl-init.c:117
#9  0xb6ff17cc in _dl_start_user () from /lib/ld-linux-armhf.so.3
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb)

I installed 1.0.5~git20230620.ed184dc-3 from expermental, that doesn't
fix the problem.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |
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