https://bugs.kde.org/show_bug.cgi?id=451843
Bug ID: 451843
Summary: valgrind fails to start on a FreeBSD system which
enforces W^X.
Product: valgrind
Version: 3.18.1
Platform: FreeBSD Ports
OS: FreeBSD
Status: REPORTED
Severity: critical
Priority: NOR
Component: memcheck
Assignee: jsew...@acm.org
Reporter: akami...@hotmail.com
Target Milestone: ---
SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug
symbols.
See
https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***
valgrind fails to start on a FreeBSD system which enforces W^X. Looks like
memcheck is trying to mmap with PROT_WRITE|PROT_EXEC, permissions. Is it
really needed ? Or is there a option in Makefile to avoid this ?
STEPS TO REPRODUCE
1. FreeBSD 13+ with W^X enforced "sysctl kern.elf64.allow_wx=0"
2. launch valgrind
3.
OBSERVED RESULT
➜ ~ valgrind --version
--23644:0: aspacem <<< SHOW_SEGMENTS: out_of_memory (15 segments)
--23644:0: aspacem 1 segment names in 1 slots
--23644:0: aspacem freelist is empty
--23644:0: aspacem (0,4,5) /usr/local/libexec/valgrind/memcheck-amd64-freebsd
--23644:0: aspacem 0: RSVN 0000000000-0003ffffff 64m ----- SmFixed
--23644:0: aspacem 1: 0004000000-0037ffffff 832m
--23644:0: aspacem 2: FILE 0038000000-00380c1fff 794624 r---- d=0x99ef79a8
i=329107 o=0 (0,4)
--23644:0: aspacem 3: FILE 00380c2000-0038273fff 1777664 r-x-- d=0x99ef79a8
i=329107 o=790528 (0,4)
--23644:0: aspacem 4: FILE 0038274000-0038274fff 4096 rw--- d=0x99ef79a8
i=329107 o=2564096 (0,4)
--23644:0: aspacem 5: ANON 0038275000-003a849fff 37m rw---
--23644:0: aspacem 6: 003a84a000-0401ffffff 15479m
--23644:0: aspacem 7: RSVN 0402000000-0402000fff 4096 ----- SmFixed
--23644:0: aspacem 8: 0402001000-07ffffffff 16351m
--23644:0: aspacem 9: RSVN 0800000000-0839075fff 912m ----- SmFixed
--23644:0: aspacem 10: ANON 0839076000-0859055fff 511m -----
--23644:0: aspacem 11: ANON 0859056000-0859075fff 131072 rw---
--23644:0: aspacem 12: RSVN 0859076000-7fffffffefff 131038g ----- SmFixed
--23644:0: aspacem 13: ANON 7ffffffff000-7fffffffffff 4096 r-x--
--23644:0: aspacem 14: RSVN 800000000000-ffffffffffffffff 16383e -----
SmFixed
--23644:0: aspacem >>>
--23644-- core : 0/ 0 max/curr mmap'd, 0/0
unsplit/split sb unmmap'd, 0/ 0 max/curr, 0/
0 totalloc-blocks/bytes, 0 searches 8 rzB
--23644-- dinfo : 0/ 0 max/curr mmap'd, 0/0
unsplit/split sb unmmap'd, 0/ 0 max/curr, 0/
0 totalloc-blocks/bytes, 0 searches 8 rzB
--23644-- (null) : 0/ 0 max/curr mmap'd, 0/0
unsplit/split sb unmmap'd, 0/ 0 max/curr, 0/
0 totalloc-blocks/bytes, 0 searches 0 rzB
--23644-- demangle: 0/ 0 max/curr mmap'd, 0/0
unsplit/split sb unmmap'd, 0/ 0 max/curr, 0/
0 totalloc-blocks/bytes, 0 searches 8 rzB
--23644-- ttaux : 0/ 0 max/curr mmap'd, 0/0
unsplit/split sb unmmap'd, 0/ 0 max/curr, 0/
0 totalloc-blocks/bytes, 0 searches 8 rzB
--23644-- translate: 0 guest insns, 0 traces, 0 uncond chased, 0 cond chased
--23644-- translate: no SP updates identified
--23644-- translate: PX: SPonly 0, UnwRegs 0, AllRegs 0, AllRegsAllInsns 0
--23644-- tt/tc: 0 tt lookups requiring 0 probes
--23644-- tt/tc: 0 fast-cache updates, 0 flushes
--23644-- transtab: new 0 (0 -> 0; ratio 0.0) [0 scs] avg tce size 0
--23644-- transtab: dumped 0 (0 -> ??) (sectors recycled 0)
--23644-- transtab: discarded 0 (0 -> ??)
--23644-- scheduler: 0 event checks.
--23644-- scheduler: 0 indir transfers, 0 misses (1 in 0) ..
--23644-- scheduler: .. of which: 0 hit0, 0 hit1, 0 hit2, 0 hit3, 0 missed
--23644-- scheduler: 0/0 major/minor sched events.
--23644-- sanity: 0 cheap, 0 expensive checks.
==23644==
==23644== Valgrind's memory management: out of memory:
==23644== newSuperblock's request for 4194304 bytes failed.
==23644== 576,544,768 bytes have already been mmap-ed ANONYMOUS.
==23644== Valgrind cannot continue. Sorry.
==23644==
==23644== There are several possible reasons for this.
==23644== - You have some kind of memory limit in place. Look at the
==23644== output of 'ulimit -a'. Is there a limit on the size of
==23644== virtual memory or address space?
==23644== - You have run out of swap space.
==23644== - Valgrind has a bug. If you think this is the case or you are
==23644== not sure, please let us know and we'll try to fix it.
==23644== Please note that programs can take substantially more memory than
==23644== normal when running under Valgrind tools, eg. up to twice or
==23644== more, depending on the tool. On a 64-bit machine, Valgrind
==23644== should be able to make use of up 32GB memory. On a 32-bit
==23644== machine, Valgrind should be able to use all the memory available
==23644== to a single process, up to 4GB if that's how you have your
==23644== kernel configured. Most 32-bit Linux setups allow a maximum of
==23644== 3GB per process.
==23644==
==23644== Whatever the reason, Valgrind cannot continue. Sorry.
➜ ~ proccontrol -m wxmap -s enable valgrind --version
valgrind-3.18.1
EXPECTED RESULT
valgrind should run
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version:
KDE Frameworks Version:
Qt Version:
ADDITIONAL INFORMATION
➜ ~ truss valgrind --version
mmap(0x0,135168,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) = 34910072832
(0x820cd7000)
mprotect(0x2c10a2f36000,4096,PROT_READ) = 0 (0x0)
issetugid() = 0 (0x0)
sigfastblock(0x1,0x2c10a2f38ad0) = 0 (0x0)
open("/etc/libmap.conf",O_RDONLY|O_CLOEXEC,04063320030) = 3 (0x3)
fstat(3,{ mode=-rw-r--r-- ,inode=4195,size=47,blksize=4096 }) = 0 (0x0)
read(3,"# $FreeBSD$\nincludedir /usr/loc"...,47) = 47 (0x2f)
close(3) = 0 (0x0)
open("/usr/local/etc/libmap.d",O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC,0165)
= 3 (0x3)
fcntl(3,F_ISUNIONSTACK,0x0) = 0 (0x0)
getdirentries(3,"\M-j\M-O\^C\0\0\0\0\0\^A\0\0\0\0"...,4096,{ 0x0 }) = 104
(0x68)
open("/usr/local/etc/libmap.d/mesa.conf",O_RDONLY|O_CLOEXEC,0165) = 4 (0x4)
fstat(4,{ mode=-rw-r--r-- ,inode=491804,size=38,blksize=4096 }) = 0 (0x0)
read(4,"libGLX_indirect.so.0 libGLX_mesa"...,38) = 38 (0x26)
close(4) = 0 (0x0)
getdirentries(3,0x820cdc008,4096,{ 0x1e14e5b3 }) = 0 (0x0)
close(3) = 0 (0x0)
open("/var/run/ld-elf.so.hints",O_RDONLY|O_CLOEXEC,010004427) = 3 (0x3)
read(3,"Ehnt\^A\0\0\0\M^@\0\0\0\M-.\0\0"...,128) = 128 (0x80)
fstat(3,{ mode=-r--r--r-- ,inode=331815,size=302,blksize=4096 }) = 0 (0x0)
pread(3,"/lib:/usr/lib:/usr/lib/compat:/u"...,174,0x80) = 174 (0xae)
close(3) = 0 (0x0)
open("/lib/libc.so.7",O_RDONLY|O_CLOEXEC|O_VERIFY,012320443000) = 3 (0x3)
fstat(3,{ mode=-r--r--r-- ,inode=198291,size=2001624,blksize=131072 }) = 0
(0x0)
mmap(0x0,4096,PROT_READ,MAP_PRIVATE|MAP_PREFAULT_READ,3,0x0) = 34923339776
(0x82197e000)
mmap(0x0,4296704,PROT_NONE,MAP_GUARD,-1,0x0) = 34932731904 (0x822273000)
mmap(0x822273000,565248,PROT_READ,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFAULT_READ,3,0x0)
= 34932731904 (0x822273000)
mmap(0x8222fd000,1380352,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFAULT_READ,3,0x89000)
= 34933297152 (0x8222fd000)
mmap(0x82244e000,40960,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAULT_READ,3,0x1d9000)
= 34934677504 (0x82244e000)
mmap(0x822458000,24576,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAULT_READ,3,0x1e2000)
= 34934718464 (0x822458000)
mmap(0x82245e000,2285568,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_ANON,-1,0x0)
= 34934743040 (0x82245e000)
munmap(0x82197e000,4096) = 0 (0x0)
close(3) = 0 (0x0)
mprotect(0x82244e000,36864,PROT_READ) = 0 (0x0)
mprotect(0x82244e000,36864,PROT_READ|PROT_WRITE) = 0 (0x0)
mprotect(0x82244e000,36864,PROT_READ) = 0 (0x0)
readlink("/etc/malloc.conf",0x8209817f0,1024) ERR#2 'No such file or
directory'
issetugid() = 0 (0x0)
__sysctl("vm.overcommit",2,0x82097fd7c,0x82097fd70,0x0,0) = 0 (0x0)
mmap(0x0,2097152,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON|MAP_ALIGNED(21),-1,0x0)
= 34915483648 (0x821200000)
mmap(0x0,2097152,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON|MAP_ALIGNED(12),-1,0x0)
= 34940534784 (0x8229e4000)
mmap(0x0,4194304,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON|MAP_ALIGNED(21),-1,0x0)
= 34949038080 (0x823200000)
getpid() = 23675 (0x5c7b)
__sysctl("kern.proc.pathname.23675",4,0x820982800,0x8209827f8,0x0,0) = 0 (0x0)
execve("/usr/local/libexec/valgrind/memcheck-amd64-freebsd",0x820982c90,0x8229f0000)
EJUSTRETURN
__sysctl("sysctl.name2oid
security.bsd.unprivileged_proc_debug",2,0x3a37f870,0x3a37f848,0x38019299,36) =
0 (0x0)
__sysctl("security.bsd.unprivileged_proc_debug",3,0x3a37f960,0x3a37f968,0x0,0)
= 0 (0x0)
getpid() = 23675 (0x5c7b)
__sysctl("kern.proc.vmmap.23675",4,0x3977ddb0,0x3a37f7d0,0x0,0) = 0 (0x0)
mmap(0x402001000,4194304,PROT_READ|PROT_WRITE|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_ANON,-1,0x0)
ERR#13 'Permission denied'
getpid() = 23675 (0x5c7b)
--23675:0: aspacem <<< SHOW_SEGMENTS: out_of_memory (15 segments)
write(2,"--23675:0: aspacem <<< SHOW_SEGM"...,66) = 66 (0x42)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem 1 segment names in 1 slots
write(2,"--23675:0: aspacem 1 segment nam"...,46) = 46 (0x2e)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem freelist is empty
write(2,"--23675:0: aspacem freelist is e"...,37) = 37 (0x25)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem (0,4,5) /usr/local/libexec/valgrind/memcheck-amd64-freebsd
write(2,"--23675:0: aspacem (0,4,5) /usr/"...,78) = 78 (0x4e)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem 0: RSVN 0000000000-0003ffffff 64m ----- SmFixed
write(2,"--23675:0: aspacem 0: RSVN 000"...,73) = 73 (0x49)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem 1: 0004000000-0037ffffff 832m
write(2,"--23675:0: aspacem 1: 000"...,59) = 59 (0x3b)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem 2: FILE 0038000000-00380c1fff 794624 r---- d=0x99ef79a8
i=329107 o=write(2,"--23675:0: aspacem 2: FILE 003"...,90) = 90 (0x5a)
0 (0,4)
write(2,"0 (0,4)\n",14) = 14 (0xe)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem 3: FILE 00380c2000-0038273fff 1777664 r-x-- d=0x99ef79a8
i=329107 o=write(2,"--23675:0: aspacem 3: FILE 003"...,90) = 90 (0x5a)
790528 (0,4)
write(2,"790528 (0,4)\n",14) = 14 (0xe)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem 4: FILE 0038274000-0038274fff 4096 rw--- d=0x99ef79a8
i=329107 o=write(2,"--23675:0: aspacem 4: FILE 003"...,90) = 90 (0x5a)
2564096 (0,4)
write(2,"2564096 (0,4)\n",14) = 14 (0xe)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem 5: ANON 0038275000-003a849fff 37m rw---
write(2,"--23675:0: aspacem 5: ANON 003"...,65) = 65 (0x41)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem 6: 003a84a000-0401ffffff 15479m
write(2,"--23675:0: aspacem 6: 003"...,59) = 59 (0x3b)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem 7: RSVN 0402000000-0402000fff 4096 ----- SmFixed
write(2,"--23675:0: aspacem 7: RSVN 040"...,73) = 73 (0x49)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem 8: 0402001000-07ffffffff 16351m
write(2,"--23675:0: aspacem 8: 040"...,59) = 59 (0x3b)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem 9: RSVN 0800000000-0839051fff 912m ----- SmFixed
write(2,"--23675:0: aspacem 9: RSVN 080"...,73) = 73 (0x49)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem 10: ANON 0839052000-0859031fff 511m -----
write(2,"--23675:0: aspacem 10: ANON 083"...,65) = 65 (0x41)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem 11: ANON 0859032000-0859051fff 131072 rw---
write(2,"--23675:0: aspacem 11: ANON 085"...,65) = 65 (0x41)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem 12: RSVN 0859052000-7fffffffefff 131038g ----- SmFixed
write(2,"--23675:0: aspacem 12: RSVN 085"...,75) = 75 (0x4b)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem 13: ANON 7ffffffff000-7fffffffffff 4096 r-x--
write(2,"--23675:0: aspacem 13: ANON 7ff"...,69) = 69 (0x45)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem 14: RSVN 800000000000-ffffffffffffffff 16383e -----
SmFixed
write(2,"--23675:0: aspacem 14: RSVN 800"...,81) = 81 (0x51)
getpid() = 23675 (0x5c7b)
--23675:0: aspacem >>>
write(2,"--23675:0: aspacem >>>\n",23) = 23 (0x17)
getpid() = 23675 (0x5c7b)
--23675-- core : 0/ 0 max/curr mmap'd, 0/0
unsplit/split sb unmmap'd, 0/ 0 max/curr, 0/
0 totalloc-blocks/bytes, 0 searches 8 rzB
write(2,"--23675-- core : "...,208) = 208 (0xd0)
getpid() = 23675 (0x5c7b)
--23675-- dinfo : 0/ 0 max/curr mmap'd, 0/0
unsplit/split sb unmmap'd, 0/ 0 max/curr, 0/
0 totalloc-blocks/bytes, 0 searches 8 rzB
write(2,"--23675-- dinfo : "...,208) = 208 (0xd0)
getpid() = 23675 (0x5c7b)
--23675-- (null) : 0/ 0 max/curr mmap'd, 0/0
unsplit/split sb unmmap'd, 0/ 0 max/curr, 0/
0 totalloc-blocks/bytes, 0 searches 0 rzB
write(2,"--23675-- (null) : "...,208) = 208 (0xd0)
getpid() = 23675 (0x5c7b)
--23675-- demangle: 0/ 0 max/curr mmap'd, 0/0
unsplit/split sb unmmap'd, 0/ 0 max/curr, 0/
0 totalloc-blocks/bytes, 0 searches 8 rzB
write(2,"--23675-- demangle: "...,208) = 208 (0xd0)
getpid() = 23675 (0x5c7b)
--23675-- ttaux : 0/ 0 max/curr mmap'd, 0/0
unsplit/split sb unmmap'd, 0/ 0 max/curr, 0/
0 totalloc-blocks/bytes, 0 searches 8 rzB
write(2,"--23675-- ttaux : "...,208) = 208 (0xd0)
getpid() = 23675 (0x5c7b)
--23675-- translate: 0 guest insns, 0 traces, 0 uncond chased, 0 cond chased
write(2,"--23675-- translate: 0 guest ins"...,77) = 77 (0x4d)
getpid() = 23675 (0x5c7b)
--23675-- translate: no SP updates identified
write(2,"--23675-- translate: no SP updat"...,46) = 46 (0x2e)
getpid() = 23675 (0x5c7b)
--23675-- translate: PX: SPonly 0, UnwRegs 0, AllRegs 0, AllRegsAllInsns 0
write(2,"--23675-- translate: PX: SPonly "...,78) = 78 (0x4e)
getpid() = 23675 (0x5c7b)
--23675-- tt/tc: 0 tt lookups requiring 0 probes
write(2,"--23675-- tt/tc: 0 tt lookup"...,53) = 53 (0x35)
getpid() = 23675 (0x5c7b)
--23675-- tt/tc: 0 fast-cache updates, 0 flushes
write(2,"--23675-- tt/tc: 0 fast-cach"...,53) = 53 (0x35)
getpid() = 23675 (0x5c7b)
--23675-- transtab: new 0 (0 -> 0; ratio 0.0) [0 scs] avg tce size 0
write(2,"--23675-- transtab: new "...,77) = 77 (0x4d)
getpid() = 23675 (0x5c7b)
--23675-- transtab: dumped 0 (0 -> ??) (sectors recycled 0)
write(2,"--23675-- transtab: dumped "...,65) = 65 (0x41)
getpid() = 23675 (0x5c7b)
--23675-- transtab: discarded 0 (0 -> ??)
write(2,"--23675-- transtab: discarded "...,44) = 44 (0x2c)
getpid() = 23675 (0x5c7b)
--23675-- scheduler: 0 event checks.
write(2,"--23675-- scheduler: 0 event che"...,37) = 37 (0x25)
getpid() = 23675 (0x5c7b)
--23675-- scheduler: 0 indir transfers, 0 misses (1 in 0) ..
write(2,"--23675-- scheduler: 0 indir tra"...,61) = 61 (0x3d)
getpid() = 23675 (0x5c7b)
--23675-- scheduler: .. of which: 0 hit0, 0 hit1, 0 hit2, 0 hit3, 0 missed
write(2,"--23675-- scheduler: .. of which"...,75) = 75 (0x4b)
getpid() = 23675 (0x5c7b)
--23675-- scheduler: 0/0 major/minor sched events.
write(2,"--23675-- scheduler: 0/0 major/m"...,51) = 51 (0x33)
getpid() = 23675 (0x5c7b)
--23675-- sanity: 0 cheap, 0 expensive checks.
write(2,"--23675-- sanity: 0 cheap, 0 "...,50) = 50 (0x32)
mmap(0x402001000,4194304,PROT_READ|PROT_WRITE|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_ANON,-1,0x0)
ERR#13 'Permission denied'
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
==23675==
==23675== Valgrind's memory management: out of memory:
==23675== newSuperblock's request for 4194304 bytes failed.
==23675== 576,544,768 bytes have already been mmap-ed ANONYMOUS.
==23675== Valgrind cannot continue. Sorry.
==23675==
==23675== There are several possible reasons for this.
==23675== - You have some kind of memory limit in place. Look at the
==23675== output of 'ulimit -a'. Is there a limit on the size of
==23675== virtual memory or addwrite(2,"==23675== \n==23675==
Valgri"...,512) = 512 (0x200)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
ress space?
==23675== - You have run out of swap space.
==23675== - Valgrind has a bug. If you think this is the case or you are
==23675== not sure, please let us know and we'll try to fix it.
==23675== Please note that programs can take substantially more memory than
==23675== normal when running under Valgrind tools, eg. up to twice or
==23675== more, depending on the tool. On a 64-bit machine, Valgrind
==23675== should be able to make use of up 32GB memory. On a 32-bit
==23675== write(2,"ress space?\n==23675== - You"...,519) = 519 (0x207)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
getpid() = 23675 (0x5c7b)
machine, Valgrind should be able to use all the memory available
==23675== to a single process, up to 4GB if that's how you have your
==23675== kernel configured. Most 32-bit Linux setups allow a maximum of
==23675== 3GB per process.
==23675==
==23675== Whatever the reason, Valgrind cannot continue. Sorry.
write(2," machine, Valgrind should be a"...,330) = 330 (0x14a)
exit(0x1)
process exit, rval = 1
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