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Re: bin/59035: new named(8) crashes at startup on evbarmv5
The following reply was made to PR bin/59035; it has been noted by GNATS.
From: Christos Zoulas <christos%zoulas.com@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: gnats-admin%netbsd.org@localhost,
netbsd-bugs%netbsd.org@localhost
Subject: Re: bin/59035: new named(8) crashes at startup on evbarmv5
Date: Tue, 28 Jan 2025 18:18:03 -0500
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For the source:
switch (op) {
case FUTEX_WAIT:
/*
* Wait until *uaddr is changed to something else than =
"val".
* Comparing *uaddr content against val figures out =
which
* thread has been awakened.
*/
while (CMM_LOAD_SHARED(*uaddr) =3D=3D val)
pthread_cond_wait(&__urcu_compat_futex_cond,
&__urcu_compat_futex_lock);
This instruction is:
.LBE2: =20
.loc 1 71 34 is_stmt 0 view .LVU35
cmp r5, r3
bne .L13
ldr r3, .L29+8
ldr r8, [r9, r3]
.LVL14:=20
.L10:
.loc 1 72 4 is_stmt 1 view .LVU36
mov r1, r6
mov r0, r8
bl __libc_cond_wait(PLT)
.LVL15:=20
and
.L29: =20
.word _GLOBAL_OFFSET_TABLE_-(.LPIC9+8)
.word __urcu_compat_futex_lock(GOT)
.word __urcu_compat_futex_cond(GOT)
.word .LC3-(.LPIC6+8)
.word .LANCHOR0-(.LPIC7+8)
.word .LC1-(.LPIC8+8)
.word .LC2-(.LPIC3+8)
.word .LANCHOR0-(.LPIC4+8)
.word .LC1-(.LPIC5+8)
.word .LC0-(.LPIC0+8)
.word .LANCHOR0-(.LPIC1+8)
.word .LC1-(.LPIC2+8)
.cfi_endproc
So it is loading __urcu_compat_futex_cond from the GOT and crashing?
Best,
christos
> On Jan 28, 2025, at 6:25=E2=80=AFAM, martin%netbsd.org@localhost =
<martin%NetBSD.org@localhost> wrote:
>=20
>> Number: 59035
>> Category: bin
>> Synopsis: new named(8) crashes at startup on evbarmv5
>> Confidential: no
>> Severity: critical
>> Priority: high
>> Responsible: bin-bug-people
>> State: open
>> Class: sw-bug
>> Submitter-Id: net
>> Arrival-Date: Tue Jan 28 11:25:00 +0000 2025
>> Originator: Martin Husemann
>> Release: NetBSD 10.99.12
>> Organization:
> The NetBSD Foundation, Inc.
>> Environment:
> System: NetBSD unpluged.duskware.de 10.99.12 NetBSD 10.99.12 =
(UNPLUGED) #621: Tue Jan 28 10:16:08 CET 2025 =
martin%seven-days-to-the-wolves.aprisoft.de@localhost:/work/src/sys/arch/evbarm/comp=
ile/UNPLUGED evbarm
> Architecture: earmv5
> Machine: evbarm
>> Description:
>=20
> After updating to todays -current the named on this machine does not =
start
> any more.
>=20
> gdb named named.core=20
> GNU gdb (GDB) 15.1
> Copyright (C) 2024 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later =
<http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.
> Type "show copying" and "show warranty" for details.
> This GDB was configured as "armv7--netbsdelf-eabihf".
> Type "show configuration" for configuration details.
> For bug reporting instructions, please see:
> <https://www.gnu.org/software/gdb/bugs/>.
> Find the GDB manual and other documentation resources online at:
> <http://www.gnu.org/software/gdb/documentation/>.
>=20
> For help, type "help".
> Type "apropos word" to search for commands related to "word"...
> Reading symbols from named...
> Reading symbols from /usr/libdata/debug//usr/sbin/named.debug...
> [New process 351]
> [New process 1383]
> [New process 292]
> [New process 1437]
> Core was generated by `named'.
> Program terminated with signal SIGSEGV, Segmentation fault.
> #0 0x000504c0 in compat_futex_noasync (uaddr=3D0xbb2952a8, =
op=3D-1169994232, val=3D256, timeout=3D<optimized out>,=20
> uaddr2=3D0x4, val3=3D0)
> at =
/work/src/external/lgpl2/userspace-rcu/lib/liburcu-memb/../../dist/src/com=
pat_futex.c:71
>=20
> unfortunately it can't backtrace from there.
>=20
> (gdb) info reg
> r0 0xbb514040 3142664256
> r1 0xbbd40208 3151233544
> r2 0x10000 65536
> r3 0x0 0
> r4 0xbb2952a8 3140047528
> r5 0x100 256
> r6 0x40 64
> r7 0xbbd40208 3151233544
> r8 0xba434e08 3124973064
> r9 0xbb2c253c 3140232508
> r10 0xbb2c2658 3140232792
> r11 0x0 0
> r12 0x920f0 598256
> sp 0xbfffe688 0xbfffe688
> lr 0x504c0 328896
> pc 0x504c0 0x504c0 <compat_futex_noasync+184>
> cpsr 0x20000010 536870928
> Dump of assembler code for function compat_futex_noasync:
> 0x00050408 <+0>: push {r4, r5, r6, r7, r8, r9, lr}
> 0x0005040c <+4>: ldr r9, [pc, #332] @ 0x50560 =
<compat_futex_noasync+344>
> 0x00050410 <+8>: sub sp, sp, #12
> 0x00050414 <+12>: cmp r3, #0
> 0x00050418 <+16>: ldr r12, [sp, #40] @ 0x28
> 0x0005041c <+20>: add r9, pc, r9
> 0x00050420 <+24>: bne 0x50540 <compat_futex_noasync+312>
> 0x00050424 <+28>: cmp r12, #0
> 0x00050428 <+32>: bne 0x50520 <compat_futex_noasync+280>
> 0x0005042c <+36>: ldr r3, [sp, #44] @ 0x2c
> 0x00050430 <+40>: cmp r3, #0
> 0x00050434 <+44>: bne 0x50500 <compat_futex_noasync+248>
> 0x00050438 <+48>: mov r4, r0
> 0x0005043c <+52>: mov r8, r1
> 0x00050440 <+56>: mov r5, r2
> 0x00050444 <+60>: bl 0x108f4 <__sync_synchronize@plt>
> 0x00050448 <+64>: ldr r3, [pc, #276] @ 0x50564 =
<compat_futex_noasync+348>
> 0x0005044c <+68>: ldr r6, [r9, r3]
> 0x00050450 <+72>: mov r0, r6
> 0x00050454 <+76>: bl 0xf250 <__libc_mutex_lock@plt>
> 0x00050458 <+80>: subs r7, r0, #0
> 0x0005045c <+84>: bne 0x504f4 <compat_futex_noasync+236>
> 0x00050460 <+88>: cmp r8, #0
> 0x00050464 <+92>: beq 0x504b4 <compat_futex_noasync+172>
> 0x00050468 <+96>: cmp r8, #1
> 0x0005046c <+100>: bne 0x504a0 <compat_futex_noasync+152>
> 0x00050470 <+104>: ldr r3, [pc, #240] @ 0x50568 =
<compat_futex_noasync+352>
> 0x00050474 <+108>: ldr r3, [r9, r3]
> 0x00050478 <+112>: mov r0, r3
> 0x0005047c <+116>: str r3, [sp, #4]
> 0x00050480 <+120>: bl 0x10f30 <__libc_cond_broadcast@plt>
> 0x00050484 <+124>: mov r0, r6
> 0x00050488 <+128>: bl 0x117f4 <__libc_mutex_unlock@plt>
> 0x0005048c <+132>: subs r4, r0, #0
> 0x00050490 <+136>: bne 0x504e4 <compat_futex_noasync+220>
> 0x00050494 <+140>: mov r0, r7
> 0x00050498 <+144>: add sp, sp, #12
> 0x0005049c <+148>: pop {r4, r5, r6, r7, r8, r9, pc}
> 0x000504a0 <+152>: bl 0xebd8 <__errno@plt>
> 0x000504a4 <+156>: mov r3, #22
> 0x000504a8 <+160>: mvn r7, #0
> 0x000504ac <+164>: str r3, [r0]
> 0x000504b0 <+168>: b 0x50484 <compat_futex_noasync+124>
> 0x000504b4 <+172>: ldr r3, [r4]
> 0x000504b8 <+176>: cmp r5, r3
> 0x000504bc <+180>: bne 0x50484 <compat_futex_noasync+124>
> =3D> 0x000504c0 <+184>: ldr r3, [pc, #160] @ 0x50568 =
<compat_futex_noasync+352>
> 0x000504c4 <+188>: ldr r8, [r9, r3]
> 0x000504c8 <+192>: mov r1, r6
> 0x000504cc <+196>: mov r0, r8
> 0x000504d0 <+200>: bl 0x10ea0 <__libc_cond_wait@plt>
> 0x000504d4 <+204>: ldr r3, [r4]
> 0x000504d8 <+208>: cmp r3, r5
> 0x000504dc <+212>: beq 0x504c8 <compat_futex_noasync+192>
> 0x000504e0 <+216>: b 0x50484 <compat_futex_noasync+124>
> 0x000504e4 <+220>: bl 0xebd8 <__errno@plt>
> 0x000504e8 <+224>: str r4, [r0]
> 0x000504ec <+228>: mvn r7, #0
> 0x000504f0 <+232>: b 0x50494 <compat_futex_noasync+140>
> 0x000504f4 <+236>: bl 0xebd8 <__errno@plt>
> 0x000504f8 <+240>: str r7, [r0]
> 0x000504fc <+244>: b 0x504ec <compat_futex_noasync+228>
> 0x00050500 <+248>: ldr r3, [pc, #100] @ 0x5056c =
<compat_futex_noasync+356>
> 0x00050504 <+252>: ldr r2, [pc, #100] @ 0x50570 =
<compat_futex_noasync+360>
> 0x00050508 <+256>: ldr r0, [pc, #100] @ 0x50574 =
<compat_futex_noasync+364>
> 0x0005050c <+260>: mov r1, #51 @ 0x33
> 0x00050510 <+264>: add r3, pc, r3
> 0x00050514 <+268>: add r2, pc, r2
> 0x00050518 <+272>: add r0, pc, r0
> 0x0005051c <+276>: bl 0x10984 <__assert13@plt>
> 0x00050520 <+280>: ldr r3, [pc, #80] @ 0x50578 =
<compat_futex_noasync+368>
> 0x00050524 <+284>: ldr r2, [pc, #80] @ 0x5057c =
<compat_futex_noasync+372>
> 0x00050528 <+288>: ldr r0, [pc, #80] @ 0x50580 =
<compat_futex_noasync+376>
> 0x0005052c <+292>: mov r1, #50 @ 0x32
> 0x00050530 <+296>: add r3, pc, r3
> 0x00050534 <+300>: add r2, pc, r2
> 0x00050538 <+304>: add r0, pc, r0
> 0x0005053c <+308>: bl 0x10984 <__assert13@plt>
> 0x00050540 <+312>: ldr r3, [pc, #60] @ 0x50584 =
<compat_futex_noasync+380>
> 0x00050544 <+316>: ldr r2, [pc, #60] @ 0x50588 =
<compat_futex_noasync+384>
> 0x00050548 <+320>: ldr r0, [pc, #60] @ 0x5058c =
<compat_futex_noasync+388>
> 0x0005054c <+324>: mov r1, #49 @ 0x31
> 0x00050550 <+328>: add r3, pc, r3
> 0x00050554 <+332>: add r2, pc, r2
> 0x00050558 <+336>: add r0, pc, r0
> 0x0005055c <+340>: bl 0x10984 <__assert13@plt>
> 0x00050560 <+344>: muleq r4, r4, r2
> 0x00050564 <+348>: strdeq r0, [r0], -r12
> 0x00050568 <+352>: ldrdeq r0, [r0], -r8
> 0x0005056c <+356>: andeq r8, r2, r12, ror r4
> 0x00050570 <+360>: andeq r4, r3, r8, lsl #19
> 0x00050574 <+364>: andeq r8, r2, r4, lsl r4
> 0x00050578 <+368>: andeq r8, r2, r4, asr r4
> 0x0005057c <+372>: andeq r4, r3, r8, ror #18
> 0x00050580 <+376>: strdeq r8, [r2], -r4
> 0x00050584 <+380>: ldrdeq r8, [r2], -r0
> 0x00050588 <+384>: andeq r4, r3, r8, asr #18
> 0x0005058c <+388>: ldrdeq r8, [r2], -r4
> End of assembler dump.
>=20
>=20
>> How-To-Repeat:
> not quite sure, evbearmv5 specific?
>=20
>> Fix:
> n/a
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Content-Type: text/html;
charset=utf-8
<html><head><meta http-equiv=3D"content-type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"overflow-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;"><div>For the =
source:</div><div><br></div><div><div> switch =
(op) {</div><div> case =
FUTEX_WAIT:</div><div> =
/*</div><div> =
* Wait until *uaddr is changed to something else than =
"val".</div><div> =
* Comparing *uaddr content against val figures out =
which</div><div> =
* thread has been awakened.</div><div> =
*/</div><div> =
while (CMM_LOAD_SHARED(*uaddr) =3D=3D =
val)</div><div> =
<font color=3D"#ff2600"> =
pthread_cond_wait(&__urcu_compat_futex_cond,</font></div><div> =
=
=
&__urcu_compat_futex_lock);</div></div><div><br></div>This =
instruction is:<div><br></div><div> .LBE2: <div> =
.loc 1 71 34 is_stmt 0 view .LVU35</div><div> =
cmp r5, r3</div><div> =
bne .L13</div><div> <font =
color=3D"#ff2600"> ldr r3, .L29+8</font></div><div> =
ldr r8, [r9, =
r3]</div><div>.LVL14: </div><div>.L10:</div><div> =
.loc 1 72 4 is_stmt 1 view .LVU36</div><div> =
mov r1, r6</div><div> =
mov r0, r8</div><div> bl =
=
__libc_cond_wait(PLT)</div><div>.LVL15: </div><div><br></div><d=
iv>and</div><div><br></div><div><div>.L29: </div><div> =
.word =
_GLOBAL_OFFSET_TABLE_-(.LPIC9+8)</div><div> =
.word __urcu_compat_futex_lock(GOT)</div><div> =
<font color=3D"#ff2600"> .word =
__urcu_compat_futex_cond(GOT)</font></div><div> =
.word .LC3-(.LPIC6+8)</div><div> =
.word .LANCHOR0-(.LPIC7+8)</div><div> =
.word .LC1-(.LPIC8+8)</div><div> =
.word .LC2-(.LPIC3+8)</div><div> =
.word .LANCHOR0-(.LPIC4+8)</div><div> =
.word .LC1-(.LPIC5+8)</div><div> =
.word .LC0-(.LPIC0+8)</div><div> =
.word .LANCHOR0-(.LPIC1+8)</div><div> =
.word .LC1-(.LPIC2+8)</div><div> =
.cfi_endproc</div></div><div><br></div><div>So it is loading =
__urcu_compat_futex_cond from the GOT and =
crashing?</div><div><br></div><div>Best,</div><div><br></div><div>christos=
</div><div><br><blockquote type=3D"cite"><div>On Jan 28, 2025, at =
6:25=E2=80=AFAM, martin%netbsd.org@localhost <martin%NetBSD.org@localhost> =
wrote:</div><br class=3D"Apple-interchange-newline"><div><div><blockquote =
type=3D"cite">Number: =
59035<br>Category: =
bin<br>Synopsis: =
new named(8) crashes at startup on =
evbarmv5<br>Confidential: no<br>Severity: =
critical<br>Priority: =
high<br>Responsible: =
bin-bug-people<br>State: =
open<br>Class: =
sw-bug<br>Submitter-=
Id: net<br>Arrival-Date: Tue Jan 28 11:25:00 =
+0000 2025<br>Originator: Martin =
Husemann<br>Release: NetBSD =
10.99.12<br>Organization:<br></blockquote>The NetBSD Foundation, =
Inc.<br><blockquote type=3D"cite">Environment:<br></blockquote>System: =
NetBSD unpluged.duskware.de 10.99.12 NetBSD 10.99.12 (UNPLUGED) #621: =
Tue Jan 28 10:16:08 CET 2025 =
martin%seven-days-to-the-wolves.aprisoft.de@localhost:/work/src/sys/arch/evbarm/comp=
ile/UNPLUGED evbarm<br>Architecture: earmv5<br>Machine: =
evbarm<br><blockquote type=3D"cite">Description:<br></blockquote><br>After=
updating to todays -current the named on this machine does not =
start<br>any more.<br><br>gdb named named.core <br>GNU gdb (GDB) =
15.1<br>Copyright (C) 2024 Free Software Foundation, Inc.<br>License =
GPLv3+: GNU GPL version 3 or later =
<http://gnu.org/licenses/gpl.html><br>This is free software: you =
are free to change and redistribute it.<br>There is NO WARRANTY, to the =
extent permitted by law.<br>Type "show copying" and "show warranty" for =
details.<br>This GDB was configured as =
"armv7--netbsdelf-eabihf".<br>Type "show configuration" for =
configuration details.<br>For bug reporting instructions, please =
see:<br><https://www.gnu.org/software/gdb/bugs/>.<br>Find the GDB =
manual and other documentation resources online at:<br> =
<http://www.gnu.org/software/gdb/documentation/>.<=
br><br>For help, type "help".<br>Type "apropos word" to search for =
commands related to "word"...<br>Reading symbols from =
named...<br>Reading symbols from =
/usr/libdata/debug//usr/sbin/named.debug...<br>[New process 351]<br>[New =
process 1383]<br>[New process 292]<br>[New process 1437]<br>Core was =
generated by `named'.<br>Program terminated with signal SIGSEGV, =
Segmentation fault.<br>#0 0x000504c0 in compat_futex_noasync =
(uaddr=3D0xbb2952a8, op=3D-1169994232, val=3D256, timeout=3D<optimized =
out>, <br> uaddr2=3D0x4, val3=3D0)<br> =
at =
/work/src/external/lgpl2/userspace-rcu/lib/liburcu-memb/../../dist/src/com=
pat_futex.c:71<br><br>unfortunately it can't backtrace from =
there.<br><br>(gdb) info reg<br>r0 =
0x=
bb514040 =
3142664256<br>r1 =
0x=
bbd40208 =
3151233544<br>r2 =
0x=
10000 =
65=
536<br>r3 =
0x=
0 =
&n=
bsp; 0<br>r4 =
0x=
bb2952a8 =
3140047528<br>r5 =
0x=
100 =
&n=
bsp; 256<br>r6 =
0x=
40 =
&n=
bsp; 64<br>r7 =
0x=
bbd40208 =
3151233544<br>r8 =
0x=
ba434e08 =
3124973064<br>r9 =
0x=
bb2c253c =
3140232508<br>r10 =
0xbb2c26=
58 =
3140232792<br>r11 =
0x0 =
&n=
bsp; 0<br>r12 =
0x920f0 =
59=
8256<br>sp =
0x=
bfffe688 =
0xbfffe688<br>lr =
0x=
504c0 =
32=
8896<br>pc =
0x=
504c0 =
0x=
504c0 <compat_futex_noasync+184><br>cpsr =
0x20000010 =
536870928<br>Dump =
of assembler code for function compat_futex_noasync:<br> =
0x00050408 <+0>: push =
{r4, r5, r6, r7, r8, r9, lr}<br> =
0x0005040c <+4>: ldr =
r9, [pc, #332] @ 0x50560 =
<compat_futex_noasync+344><br> 0x00050410 <+8>: =
sub sp, sp, #12<br> =
0x00050414 <+12>: cmp =
r3, #0<br> 0x00050418 <+16>: =
ldr r12, [sp, #40] @ =
0x28<br> 0x0005041c <+20>: add =
r9, pc, r9<br> 0x00050420 =
<+24>: bne 0x50540 =
<compat_futex_noasync+312><br> 0x00050424 <+28>: =
cmp r12, #0<br> =
0x00050428 <+32>: bne =
0x50520 <compat_futex_noasync+280><br> =
0x0005042c <+36>: ldr =
r3, [sp, #44] @ 0x2c<br> =
0x00050430 <+40>: cmp =
r3, #0<br> 0x00050434 <+44>: =
bne 0x50500 =
<compat_futex_noasync+248><br> 0x00050438 <+48>: =
mov r4, r0<br> =
0x0005043c <+52>: mov =
r8, r1<br> 0x00050440 <+56>: =
mov r5, r2<br> =
0x00050444 <+60>: bl =
0x108f4 <__sync_synchronize@plt><br> =
0x00050448 <+64>: ldr =
r3, [pc, #276] @ 0x50564 =
<compat_futex_noasync+348><br> 0x0005044c <+68>: =
ldr r6, [r9, r3]<br> =
0x00050450 <+72>: mov =
r0, r6<br> 0x00050454 <+76>: =
bl 0xf250 =
<__libc_mutex_lock@plt><br> 0x00050458 <+80>: =
subs r7, r0, #0<br> =
0x0005045c <+84>: bne =
0x504f4 <compat_futex_noasync+236><br> =
0x00050460 <+88>: cmp =
r8, #0<br> 0x00050464 <+92>: =
beq 0x504b4 =
<compat_futex_noasync+172><br> 0x00050468 <+96>: =
cmp r8, #1<br> =
0x0005046c <+100>: bne =
0x504a0 <compat_futex_noasync+152><br> =
0x00050470 <+104>: ldr =
r3, [pc, #240] @ 0x50568 =
<compat_futex_noasync+352><br> 0x00050474 =
<+108>: ldr r3, [r9, r3]<br> =
0x00050478 <+112>: mov =
r0, r3<br> 0x0005047c <+116>: =
str r3, [sp, #4]<br> =
0x00050480 <+120>: bl =
0x10f30 =
<__libc_cond_broadcast@plt><br> 0x00050484 =
<+124>: mov r0, r6<br> =
0x00050488 <+128>: bl =
0x117f4 =
<__libc_mutex_unlock@plt><br> 0x0005048c <+132>: =
subs r4, r0, #0<br> 0x00050490 =
<+136>: bne 0x504e4 =
<compat_futex_noasync+220><br> 0x00050494 =
<+140>: mov r0, r7<br> =
0x00050498 <+144>: add =
sp, sp, #12<br> 0x0005049c =
<+148>: pop {r4, r5, r6, r7, =
r8, r9, pc}<br> 0x000504a0 <+152>: bl =
0xebd8 <__errno@plt><br> =
0x000504a4 <+156>: mov =
r3, #22<br> 0x000504a8 <+160>: =
mvn r7, #0<br> =
0x000504ac <+164>: str =
r3, [r0]<br> 0x000504b0 =
<+168>: b 0x50484 =
<compat_futex_noasync+124><br> 0x000504b4 =
<+172>: ldr r3, [r4]<br> =
0x000504b8 <+176>: cmp =
r5, r3<br> 0x000504bc <+180>: =
bne 0x50484 =
<compat_futex_noasync+124><br>=3D> 0x000504c0 <+184>: =
ldr r3, [pc, #160] @ 0x50568 =
<compat_futex_noasync+352><br> 0x000504c4 =
<+188>: ldr r8, [r9, r3]<br> =
0x000504c8 <+192>: mov =
r1, r6<br> 0x000504cc <+196>: =
mov r0, r8<br> =
0x000504d0 <+200>: bl =
0x10ea0 <__libc_cond_wait@plt><br> =
0x000504d4 <+204>: ldr =
r3, [r4]<br> 0x000504d8 =
<+208>: cmp r3, r5<br> =
0x000504dc <+212>: beq =
0x504c8 <compat_futex_noasync+192><br> =
0x000504e0 <+216>: b =
0x50484 =
<compat_futex_noasync+124><br> 0x000504e4 =
<+220>: bl 0xebd8 =
<__errno@plt><br> 0x000504e8 <+224>: =
str r4, [r0]<br> =
0x000504ec <+228>: mvn =
r7, #0<br> 0x000504f0 <+232>: =
b 0x50494 =
<compat_futex_noasync+140><br> 0x000504f4 =
<+236>: bl 0xebd8 =
<__errno@plt><br> 0x000504f8 <+240>: =
str r7, [r0]<br> =
0x000504fc <+244>: b =
0x504ec =
<compat_futex_noasync+228><br> 0x00050500 =
<+248>: ldr r3, [pc, #100] =
@ 0x5056c <compat_futex_noasync+356><br> =
0x00050504 <+252>: ldr =
r2, [pc, #100] @ 0x50570 =
<compat_futex_noasync+360><br> 0x00050508 =
<+256>: ldr r0, [pc, #100] =
@ 0x50574 <compat_futex_noasync+364><br> =
0x0005050c <+260>: mov =
r1, #51 @ 0x33<br> 0x00050510 =
<+264>: add r3, pc, r3<br> =
0x00050514 <+268>: add =
r2, pc, r2<br> 0x00050518 =
<+272>: add r0, pc, r0<br> =
0x0005051c <+276>: bl =
0x10984 <__assert13@plt><br> =
0x00050520 <+280>: ldr =
r3, [pc, #80] @ 0x50578 =
<compat_futex_noasync+368><br> 0x00050524 =
<+284>: ldr r2, [pc, #80] =
@ 0x5057c <compat_futex_noasync+372><br> =
0x00050528 <+288>: ldr =
r0, [pc, #80] @ 0x50580 =
<compat_futex_noasync+376><br> 0x0005052c =
<+292>: mov r1, #50 @ 0x32<br> =
0x00050530 <+296>: add =
r3, pc, r3<br> 0x00050534 =
<+300>: add r2, pc, r2<br> =
0x00050538 <+304>: add =
r0, pc, r0<br> 0x0005053c =
<+308>: bl 0x10984 =
<__assert13@plt><br> 0x00050540 <+312>: =
ldr r3, [pc, #60] @ =
0x50584 <compat_futex_noasync+380><br> 0x00050544 =
<+316>: ldr r2, [pc, #60] =
@ 0x50588 <compat_futex_noasync+384><br> =
0x00050548 <+320>: ldr =
r0, [pc, #60] @ 0x5058c =
<compat_futex_noasync+388><br> 0x0005054c =
<+324>: mov r1, #49 @ 0x31<br> =
0x00050550 <+328>: add =
r3, pc, r3<br> 0x00050554 =
<+332>: add r2, pc, r2<br> =
0x00050558 <+336>: add =
r0, pc, r0<br> 0x0005055c =
<+340>: bl 0x10984 =
<__assert13@plt><br> 0x00050560 <+344>: =
muleq r4, r4, r2<br> 0x00050564 =
<+348>: strdeq r0, [r0], -r12<br> =
0x00050568 <+352>: ldrdeq r0, [r0], =
-r8<br> 0x0005056c <+356>: andeq =
r8, r2, r12, ror r4<br> 0x00050570 <+360>: =
andeq r4, r3, r8, lsl #19<br> =
0x00050574 <+364>: andeq r8, =
r2, r4, lsl r4<br> 0x00050578 <+368>: =
andeq r8, r2, r4, asr r4<br> =
0x0005057c <+372>: andeq r4, =
r3, r8, ror #18<br> 0x00050580 <+376>: =
strdeq r8, [r2], -r4<br> 0x00050584 =
<+380>: ldrdeq r8, [r2], -r0<br> =
0x00050588 <+384>: andeq r4, =
r3, r8, asr #18<br> 0x0005058c <+388>: =
ldrdeq r8, [r2], -r4<br>End of assembler =
dump.<br><br><br><blockquote =
type=3D"cite">How-To-Repeat:<br></blockquote>not quite sure, evbearmv5 =
specific?<br><br><blockquote =
type=3D"cite">Fix:<br></blockquote>n/a<br></div></div></blockquote></div><=
br></div></body></html>=
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