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* [LTP] [PATCH] io_submit: uninitialized iocb may not return -EINVAL
@ 2012-03-14 14:53 Jan Stancek
  2012-03-15  1:09 ` Wanlong Gao
  0 siblings, 1 reply; 10+ messages in thread
From: Jan Stancek @ 2012-03-14 14:53 UTC (permalink / raw)
  To: ltp-list; +Cc: Jeffrey Burke

[-- Attachment #1: Type: text/plain, Size: 1120 bytes --]


Testcase 1.3 - EINVAL: uninitialized iocb
is about submitting uninitialized iocb structure.

Test is expecting to get -EINVAL, but other values are also
possible as uninitialized struct can contain any values.

For example following data fails with -EBADF:
--- snip ---
unsigned char bad_iocb[64] = {
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x84, 0xa5,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x0f, 0xff, 0xe0, 0x10, 0x0c, 0x30,
     0x00, 0x00, 0x0f, 0xff, 0xe0, 0x10, 0x0c, 0x40,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
memcpy(&iocb, bad_iocb, sizeof(iocb));
iocbs[0] = &iocb;
TEST(io_submit(ctx, 1, iocbs));
check_result(-EINVAL, TEST_RETURN);
--- snip ---

This patch accepts also few other errno codes as valid return value.

Signed-off-by: Jan Stancek <jstancek@redhat.com>
---
  testcases/kernel/syscalls/io_submit/io_submit01.c |   16 +++++++++++++++-
  1 files changed, 15 insertions(+), 1 deletions(-)



[-- Attachment #2: 0001-io_submit-uninitialized-iocb-may-not-return-EINVAL.patch --]
[-- Type: text/x-patch, Size: 991 bytes --]

diff --git a/testcases/kernel/syscalls/io_submit/io_submit01.c b/testcases/kernel/syscalls/io_submit/io_submit01.c
index da15aa0..3983fa4 100644
--- a/testcases/kernel/syscalls/io_submit/io_submit01.c
+++ b/testcases/kernel/syscalls/io_submit/io_submit01.c
@@ -126,7 +126,21 @@ int main(int argc, char *argv[])
 		/* 1.3 - EINVAL: uninitialized iocb */
 		iocbs[0] = &iocb;
 		TEST(io_submit(ctx, 1, iocbs));
-		check_result(-EINVAL, TEST_RETURN);
+		switch(TEST_RETURN) {
+			case -EINVAL:
+			case -EBADF:
+			case -EFAULT:
+			case -EPERM:
+				tst_resm(TPASS, "expected failure - "
+						"returned value = %ld : %s",
+						TEST_RETURN, strerror(-1 * TEST_RETURN));
+				break;
+			default:
+				tst_resm(TFAIL, "unexpected failure - "
+						"returned value = %ld : %s, "
+						"expected one of -EINVAL, -EBADF, -EFAULT, -EPERM",
+						TEST_RETURN, strerror(-1 * TEST_RETURN));
+		}
 
 		/* 2 - EFAULT: iocb points to invalid data */
 		TEST(io_submit(ctx, 1, (struct iocb **)-1));


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^ permalink raw reply related	[flat|nested] 10+ messages in thread
* [LTP] crashme:fork12 test may kill other process that is not forked child
@ 2012-06-27  9:52 羅秉鈞
  2012-06-29  7:45 ` Wanlong Gao
  0 siblings, 1 reply; 10+ messages in thread
From: 羅秉鈞 @ 2012-06-27  9:52 UTC (permalink / raw)
  To: ltp-list

Dear All,

fork12 test forks as many child process as possible until
the system out of memory. And kernel OOM killer is
triggered to select candidate process to be killed.

fork12 expected one of its forked child process to be chosen,
but what if any other process is chosen. Even the worst,
shell script("/bin/sh") or parent process was chosen to be killed.
No way return and the system really crashed. But this is not
what fork12 wants.

I proposed the solution for this is disable the OOM killer of parent
process and adjust child process's oom_score_adj to 500(or any
other number larger than 0), this purpose just to make child process
can be easily chosen.

Do you have better idea? Thank you.

--------------------------------------------------------------------------------------------

From: Luo,BingJiun <bjluo@faraday-tech.com>
---
 .../testcases/kernel/syscalls/fork/fork12.c        |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/ltp-full-20120401/testcases/kernel/syscalls/fork/fork12.c
b/ltp-full-20120401/testcases/kernel/syscalls/fork/fork12.c
index d052fba..c3d7cb5 100644
--- a/ltp-full-20120401/testcases/kernel/syscalls/fork/fork12.c
+++ b/ltp-full-20120401/testcases/kernel/syscalls/fork/fork12.c
@@ -63,6 +63,7 @@ int main(int ac, char **av)
        int ret, status;
        int lc;                 /* loop counter */
        char *msg;              /* message returned from parse_opts */
+       char cmd[40];

        /*
         * parse standard options
@@ -76,6 +77,11 @@ int main(int ac, char **av)
         */
        setup();

+       /* adjust parent process so not be killed when out of memory */
+       sprintf(cmd,"echo -1000 > /proc/%d/oom_score_adj", getppid());
+       printf("%s\n", cmd);
+       system(cmd);
+
        /*
         * check looping state if -i option is given
         */
@@ -92,6 +98,9 @@ int main(int ac, char **av)
                                pause();
                                exit(0);
                        }
+                       /* adjust child process so it is killed first
when out of memory */
+                       sprintf(cmd,"echo 500 > /proc/%d/oom_score_adj", pid1);
+                       system(cmd);
                        forks++;
                        ret = waitpid(-1, &status, WNOHANG);
                        if (ret < 0)
-- 
1.7.0.4



Best Regards,
Bing-Jiun

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^ permalink raw reply related	[flat|nested] 10+ messages in thread
* Re: [LTP] [PATCH] io_submit: uninitialized iocb may not return -EINVAL
@ 2012-07-05 13:03 Nitin Yadav
  0 siblings, 0 replies; 10+ messages in thread
From: Nitin Yadav @ 2012-07-05 13:03 UTC (permalink / raw)
  To: gaowanlong; +Cc: ltp-list


[-- Attachment #1.1: Type: text/plain, Size: 13600 bytes --]

Hi ,

 

I getting below error because of io_submit return -1 EINVAL(after
appling the patch), while running the aio_tio in Linux 3.2 kernel.
 

 ltp/testcases/kernel/io/aio/aio02# ./aio_tio

aio02/aio_tio    0  TINFO  :  Running test 1

 

aio02/aio_tio    0  TINFO  :  Running test 2

 

aio02/aio_tio    0  TINFO  :  Running test 3

 

aio02/aio_tio    0  TINFO  :  Running test 4

 

aio02/aio_tio    0  TINFO  :  Running test 5

 

aio02/aio_tio    0  TINFO  :  Running test 6

 

aio02/aio_tio    0  TINFO  :  Running test 7

 

aio02/aio_tio    0  TINFO  :  myctx = 2843729920l

io_fsync write: Invalid argument

 

while doing strace I came to know that io_submit returns -1 EINVAL,
please see the below trace for error(highlighted in RED) .

 

ltp-full-20120614/testcases/kernel/io/aio/aio02# strace ./aio_tio

execve("./aio_tio", ["./aio_tio"], [/* 15 vars */]) = 0

brk(0)                                  = 0x1b0c000

access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or
directory)

mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x7fc145623000

access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or
directory)

open("/etc/ld.so.cache", O_RDONLY)      = 3

fstat(3, {st_mode=S_IFREG|0644, st_size=30650, ...}) = 0

mmap(NULL, 30650, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fc14561b000

close(3)                                = 0

access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or
directory)

open("/lib/libaio.so.1", O_RDONLY)      = 3

read(3,
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300\5\0\0\0\0\0\0"...,
832) = 832

fstat(3, {st_mode=S_IFREG|0644, st_size=4096, ...}) = 0

mmap(NULL, 2099936, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0x7fc145207000

mprotect(0x7fc145208000, 2093056, PROT_NONE) = 0

mmap(0x7fc145407000, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0) = 0x7fc145407000

close(3)                                = 0

access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or
directory)

open("/lib/libc.so.6", O_RDONLY)        = 3

read(3,
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\240\355\1\0\0\0\0\0"...,
832) = 832

fstat(3, {st_mode=S_IFREG|0755, st_size=1437064, ...}) = 0

mmap(NULL, 3545160, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0x7fc144ea5000

mprotect(0x7fc144ffe000, 2093056, PROT_NONE) = 0

mmap(0x7fc1451fd000, 20480, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x158000) = 0x7fc1451fd000

mmap(0x7fc145202000, 18504, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fc145202000

close(3)                                = 0

mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x7fc14561a000

mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x7fc145619000

mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x7fc145618000

arch_prctl(ARCH_SET_FS, 0x7fc145619700) = 0

mprotect(0x7fc1451fd000, 16384, PROT_READ) = 0

mprotect(0x7fc145625000, 4096, PROT_READ) = 0

munmap(0x7fc14561b000, 30650)           = 0

getpid()                                = 29055

mkdir("/tmp/aio12Pn7B", 0700)           = 0

brk(0)                                  = 0x1b0c000

brk(0x1b2d000)                          = 0x1b2d000

getgid()                                = 0

chown("/tmp/aio12Pn7B", 4294967295, 0)  = 0

chmod("/tmp/aio12Pn7B", 0777)           = 0

chdir("/tmp/aio12Pn7B")                 = 0

fstat(1, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 2), ...}) = 0

mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x7fc145622000

write(1, "aio02/aio_tio    0  TINFO  :  Ru"..., 45aio02/aio_tio    0
TINFO  :  Running test 1

) = 45

write(1, "\n", 1

)                       = 1

open("file1", O_WRONLY|O_CREAT|O_TRUNC|O_DIRECT, 0644) = 3

io_setup(32, {140468069470208})         = 0

brk(0x1b5d000)                          = 0x1b5d000

brk(0x1b8d000)                          = 0x1b8d000

brk(0x1bae000)                          = 0x1bae000

brk(0x1bde000)                          = 0x1bde000

brk(0x1c0e000)                          = 0x1c0e000

brk(0x1c2f000)                          = 0x1c2f000

brk(0x1c5f000)                          = 0x1c5f000

brk(0x1c8f000)                          = 0x1c8f000

brk(0x1cb0000)                          = 0x1cb0000

brk(0x1ce0000)                          = 0x1ce0000

brk(0x1d10000)                          = 0x1d10000

brk(0x1d31000)                          = 0x1d31000

io_submit(140468069470208, 32, {...})   = 32

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 32

close(3)                                = 0

brk(0x1b2d000)                          = 0x1b2d000

io_destroy(140468069470208)             = 0

write(1, "aio02/aio_tio    0  TINFO  :  Ru"..., 46aio02/aio_tio    0
TINFO  :  Running test 2

 

) = 46

open("file1", O_RDONLY|O_DIRECT)        = 3

io_setup(32, {140468069470208})         = 0

brk(0x1b5d000)                          = 0x1b5d000

brk(0x1b8d000)                          = 0x1b8d000

brk(0x1bae000)                          = 0x1bae000

brk(0x1bde000)                          = 0x1bde000

brk(0x1c0e000)                          = 0x1c0e000

brk(0x1c2f000)                          = 0x1c2f000

brk(0x1c5f000)                          = 0x1c5f000

brk(0x1c8f000)                          = 0x1c8f000

brk(0x1cb0000)                          = 0x1cb0000

brk(0x1ce0000)                          = 0x1ce0000

brk(0x1d10000)                          = 0x1d10000

brk(0x1d31000)                          = 0x1d31000

io_submit(140468069470208, 32, {...})   = 32

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 1

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 1

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 1

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 1

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 1

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 1

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 4

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 3

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 2

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 4

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 1

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 1

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 1

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 1

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 1

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 1

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 2

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 3

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 2

close(3)                                = 0

brk(0x1b2d000)                          = 0x1b2d000

io_destroy(140468069470208)             = 0

write(1, "aio02/aio_tio    0  TINFO  :  Ru"..., 46aio02/aio_tio    0
TINFO  :  Running test 3

 

) = 46

open("file1", O_RDWR|O_TRUNC)           = 3

io_setup(32, {140468069470208})         = 0

brk(0x1b5d000)                          = 0x1b5d000

brk(0x1b8d000)                          = 0x1b8d000

brk(0x1bae000)                          = 0x1bae000

brk(0x1bde000)                          = 0x1bde000

brk(0x1c0e000)                          = 0x1c0e000

brk(0x1c2f000)                          = 0x1c2f000

brk(0x1c5f000)                          = 0x1c5f000

brk(0x1c8f000)                          = 0x1c8f000

brk(0x1cb0000)                          = 0x1cb0000

brk(0x1ce0000)                          = 0x1ce0000

brk(0x1d10000)                          = 0x1d10000

brk(0x1d31000)                          = 0x1d31000

io_submit(140468069470208, 32, {...})   = 32

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 32

close(3)                                = 0

brk(0x1b2d000)                          = 0x1b2d000

io_destroy(140468069470208)             = 0

write(1, "aio02/aio_tio    0  TINFO  :  Ru"..., 46aio02/aio_tio    0
TINFO  :  Running test 4

 

) = 46

open("file1", O_RDWR)                   = 3

io_setup(32, {140468069470208})         = 0

brk(0x1b5d000)                          = 0x1b5d000

brk(0x1b8d000)                          = 0x1b8d000

brk(0x1bae000)                          = 0x1bae000

brk(0x1bde000)                          = 0x1bde000

brk(0x1c0e000)                          = 0x1c0e000

brk(0x1c2f000)                          = 0x1c2f000

brk(0x1c5f000)                          = 0x1c5f000

brk(0x1c8f000)                          = 0x1c8f000

brk(0x1cb0000)                          = 0x1cb0000

brk(0x1ce0000)                          = 0x1ce0000

brk(0x1d10000)                          = 0x1d10000

brk(0x1d31000)                          = 0x1d31000

io_submit(140468069470208, 32, {...})   = 32

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 32

close(3)                                = 0

brk(0x1b2d000)                          = 0x1b2d000

io_destroy(140468069470208)             = 0

write(1, "aio02/aio_tio    0  TINFO  :  Ru"..., 46aio02/aio_tio    0
TINFO  :  Running test 5

 

) = 46

open("file1", O_WRONLY|O_TRUNC)         = 3

io_setup(32, {140468069470208})         = 0

brk(0x1b5d000)                          = 0x1b5d000

brk(0x1b8d000)                          = 0x1b8d000

brk(0x1bae000)                          = 0x1bae000

brk(0x1bde000)                          = 0x1bde000

brk(0x1c0e000)                          = 0x1c0e000

brk(0x1c2f000)                          = 0x1c2f000

brk(0x1c5f000)                          = 0x1c5f000

brk(0x1c8f000)                          = 0x1c8f000

brk(0x1cb0000)                          = 0x1cb0000

brk(0x1ce0000)                          = 0x1ce0000

brk(0x1d10000)                          = 0x1d10000

brk(0x1d31000)                          = 0x1d31000

io_submit(140468069470208, 32, {...})   = 32

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 32

close(3)                                = 0

brk(0x1b2d000)                          = 0x1b2d000

io_destroy(140468069470208)             = 0

write(1, "aio02/aio_tio    0  TINFO  :  Ru"..., 47aio02/aio_tio    0
TINFO  :  Running test 6

 

) = 47

open("file1", O_RDONLY)                 = 3

io_setup(32, {140468069470208})         = 0

brk(0x1b5d000)                          = 0x1b5d000

brk(0x1b8d000)                          = 0x1b8d000

brk(0x1bae000)                          = 0x1bae000

brk(0x1bde000)                          = 0x1bde000

brk(0x1c0e000)                          = 0x1c0e000

brk(0x1c2f000)                          = 0x1c2f000

brk(0x1c5f000)                          = 0x1c5f000

brk(0x1c8f000)                          = 0x1c8f000

brk(0x1cb0000)                          = 0x1cb0000

brk(0x1ce0000)                          = 0x1ce0000

brk(0x1d10000)                          = 0x1d10000

brk(0x1d31000)                          = 0x1d31000

io_submit(140468069470208, 32, {...})   = 32

io_getevents(140468069470208, 1, 32, {...}{30, 0}) = 32

close(3)                                = 0

brk(0x1b2d000)                          = 0x1b2d000

io_destroy(140468069470208)             = 0

write(1, "aio02/aio_tio    0  TINFO  :  Ru"..., 47aio02/aio_tio    0
TINFO  :  Running test 7

 

) = 47

open("file2", O_WRONLY|O_CREAT|O_TRUNC|O_DIRECT, 0644) = 3

io_setup(32, {140468069470208})         = 0

brk(0x1b5d000)                          = 0x1b5d000

brk(0x1b8d000)                          = 0x1b8d000

brk(0x1bae000)                          = 0x1bae000

brk(0x1bde000)                          = 0x1bde000

brk(0x1c0e000)                          = 0x1c0e000

brk(0x1c2f000)                          = 0x1c2f000

brk(0x1c5f000)                          = 0x1c5f000

brk(0x1c8f000)                          = 0x1c8f000

brk(0x1cb0000)                          = 0x1cb0000

brk(0x1ce0000)                          = 0x1ce0000

brk(0x1d10000)                          = 0x1d10000

brk(0x1d31000)                          = 0x1d31000

io_submit(140468069470208, 32, {...})   = 32

write(1, "aio02/aio_tio    0  TINFO  :  my"..., 50aio02/aio_tio    0
TINFO  :  myctx = 1164054528l

) = 50

io_submit(140468069470208, 1, {...})    = -1 EINVAL (Invalid argument)

write(2, "io_fsync write: Invalid argument"..., 33io_fsync write:
Invalid argument

) = 33

 

Could you please suggest me some pointer .

 

Thanks!

Nitin 


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will include endpoint security, mobile security and the latest in malware 
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/

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^ permalink raw reply	[flat|nested] 10+ messages in thread
end of thread, other threads:[~2012-10-16 10:13 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2012-03-14 14:53 [LTP] [PATCH] io_submit: uninitialized iocb may not return -EINVAL Jan Stancek
2012-03-15  1:09 ` Wanlong Gao
2012-03-15  2:09   ` Wanlong Gao
2012-03-15  7:48   ` Jan Stancek
2012-03-15  7:56     ` Wanlong Gao
  -- strict thread matches above, loose matches on Subject: below --
2012-06-27  9:52 [LTP] crashme:fork12 test may kill other process that is not forked child 羅秉鈞
2012-06-29  7:45 ` Wanlong Gao
2012-10-09  6:08   ` [LTP] [PATCH] io_submit: uninitialized iocb may not return -EINVAL Nitin Yadav
2012-10-16  2:31     ` Wanlong Gao
2012-10-16  6:53       ` Jan Stancek
2012-10-16 10:11         ` chrubis
2012-07-05 13:03 Nitin Yadav

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