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Bug#699288: marked as done (Segmentation fault in "kill %string")

Your message dated Sat, 21 Sep 2019 08:59:26 -0400
with message-id <c57d937eed0feea1b49a750719619b3aaff4fc92.camel@debian.org>
and subject line Closing bug 699288 for Debian ksh
has caused the Debian Bug report #699288,
regarding Segmentation fault in "kill %string"
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
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-- 
699288: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=699288
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: ksh
Version: 93u+20120801-1

Hi,

ksh crashes when passing a "%string" to the kill command:
$ strace ksh -c "kill %a"
execve("/usr/bin/ksh", ["ksh", "-c", "kill %a"], [/* 16 vars */]) = 0
brk(0)                                  = 0x81b3000
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb772d000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=31208, ...}) = 0
mmap2(NULL, 31208, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7725000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/i386-linux-gnu/i686/cmov/libdl.so.2", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0`\n\0\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=9844, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7724000
mmap2(NULL, 12408, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7720000
mmap2(0xb7722000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0xb7722000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/i386-linux-gnu/i686/cmov/libutil.so.1", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0 \n\0\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=9800, ...}) = 0
mmap2(NULL, 12424, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb771c000
mmap2(0xb771e000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0xb771e000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/i386-linux-gnu/i686/cmov/libm.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\2604\0\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=148996, ...}) = 0
mmap2(NULL, 151680, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb76f6000
mmap2(0xb771a000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x23) = 0xb771a000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/i386-linux-gnu/i686/cmov/libc.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\240o\1\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1437864, ...}) = 0
mmap2(NULL, 1452408, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb7593000
mprotect(0xb76ef000, 4096, PROT_NONE)   = 0
mmap2(0xb76f0000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x15c) = 0xb76f0000
mmap2(0xb76f3000, 10616, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb76f3000
close(3)                                = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7592000
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7591000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7592b40, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0
mprotect(0xb76f0000, 8192, PROT_READ)   = 0
mprotect(0xb771a000, 4096, PROT_READ)   = 0
mprotect(0xb771e000, 4096, PROT_READ)   = 0
mprotect(0xb7722000, 4096, PROT_READ)   = 0
mprotect(0x81a0000, 36864, PROT_READ)   = 0
mprotect(0xb774b000, 4096, PROT_READ)   = 0
munmap(0xb7725000, 31208)               = 0
mmap2(NULL, 81920, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb757d000
rt_sigaction(SIGSEGV, {0x81206f0, [], SA_INTERRUPT}, {SIG_DFL, [], 0}, 8) = 0
rt_sigaction(SIGSEGV, {SIG_DFL, [], SA_INTERRUPT}, {0x81206f0, [], SA_INTERRUPT}, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [SEGV], NULL, 8) = 0
getpid()                                = 495
getppid()                               = 494
getuid32()                              = 1001
geteuid32()                             = 1001
getgid32()                              = 1001
getegid32()                             = 1001
getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0
getrlimit(RLIMIT_NPROC, {rlim_cur=1495, rlim_max=1495}) = 0
open("/proc/sys/kernel/ngroups_max", O_RDONLY) = 3
read(3, "65536\n", 31)                  = 6
close(3)                                = 0
umask(0)                                = 027
umask(027)                              = 0
getrlimit(RLIMIT_NOFILE, {rlim_cur=1024, rlim_max=4*1024}) = 0
fcntl64(0, F_GETFL)                     = 0x2 (flags O_RDWR)
stat64("/dev/null", {st_mode=S_IFCHR|0666, st_rdev=makedev(1, 3), ...}) = 0
ioctl(0, SNDCTL_TMR_TIMEBASE or TCGETS, {B9600 opost isig icanon echo ...}) = 0
_llseek(0, 0, 0xbf88eba0, SEEK_CUR)     = -1 ESPIPE (Illegal seek)
fstat64(0, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 2), ...}) = 0
fstat64(0, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 2), ...}) = 0
stat64("/dev/null", {st_mode=S_IFCHR|0666, st_rdev=makedev(1, 3), ...}) = 0
fstat64(0, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 2), ...}) = 0
fcntl64(1, F_GETFL)                     = 0x2 (flags O_RDWR)
ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B9600 opost isig icanon echo ...}) = 0
_llseek(1, 0, 0xbf88eba0, SEEK_CUR)     = -1 ESPIPE (Illegal seek)
fstat64(1, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 2), ...}) = 0
fstat64(1, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 2), ...}) = 0
brk(0)                                  = 0x81b3000
mmap2(NULL, 49152, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7571000
rt_sigaction(SIGSEGV, {0x81206f0, [], SA_INTERRUPT}, {SIG_DFL, [], SA_INTERRUPT}, 8) = 0
rt_sigaction(SIGSEGV, {SIG_DFL, [], SA_INTERRUPT}, {0x81206f0, [], SA_INTERRUPT}, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [SEGV], NULL, 8) = 0
fstat64(2, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 2), ...}) = 0
ioctl(2, SNDCTL_TMR_TIMEBASE or TCGETS, {B9600 opost isig icanon echo ...}) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
gettimeofday({1359486703, 189021}, NULL) = 0
readlink("/proc/self/exe", "/bin/ksh93", 4097) = 10
time(NULL)                              = 1359486703
stat64("/home/JO", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
stat64(".", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
rt_sigaction(SIGCHLD, {0x8070eb0, [], SA_INTERRUPT}, {SIG_DFL, [], 0}, 8) = 0
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++

--- End Message ---
--- Begin Message --- 
Version: 2020.0.0~beta1-1
Control: found -1 93u+20120801-3.4
Control: fixed -1 2020.0.0~beta1-1

At least this bug is fixed in the latest version (2020.0.0-beta1).

Thanks,
Boyuan Yang

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