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0x00007fbf0e95bccc in r_io_close #797

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zonkzonk opened this issue Apr 21, 2014 · 5 comments
Closed

0x00007fbf0e95bccc in r_io_close #797

zonkzonk opened this issue Apr 21, 2014 · 5 comments

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@zonkzonk
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Contributor

mrn,

traps: r2[2862] general protection ip:7fbf0e95bccc sp:7fff6967f190 error:0 in libr_io.so.0.9.8.git[7fbf0e949000+3c000]

IN:

r2 -c "af,k anal/*`cat /tmp/buf`" /tmp/cp + ^D

where buf is base64 encoded attached.

OUT:

Core was generated by `r2 -c af,k anal/*8???HV@?Z???
                                                    fh"?4V?D?0???xLVC?=?<?&??4Fj?nh?'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007fbf0e95bccc in r_io_close (io=0x1f6b950, fd=0x756c617620676e69) at io.c:552
552             int nfd = fd->fd;
(gdb) bt
#0  0x00007fbf0e95bccc in r_io_close (io=0x1f6b950, fd=0x756c617620676e69) at io.c:552
#1  0x00007fbf104826a6 in r_core_file_close (r=0x6068c0 <r>, fh=0x1f9bec0) at file.c:500
#2  0x00000000004048e1 in main (argc=4, argv=0x7fff6967f5f8, envp=0x7fff6967f620) at radare2.c:651

(gdb) x/i $pc
=> 0x7fbf0e95bccc <r_io_close+44>:      mov    (%rax),%eax
(gdb) list
547
548     // TODO: remove int fd here???
549     R_API int r_io_close(RIO *io, RIODesc *fd) {
550             if (io == NULL || fd == NULL)
551                     return -1;
552             int nfd = fd->fd;
553             if (r_io_set_fd (io, fd)) {
554                     RIODesc *desc = r_io_desc_get (io, fd->fd);
555                     if (desc) {
556                             r_io_map_del (io, fd->fd);
(gdb) bt full shortened

        cmdfile = {0x0, 0x1f <error: Cannot access memory at address 0x1f>, 0x7fbf10ba0768 "0\201\275\020\277\177",
          0x7fbf109bebcc <check_match+300> "\205\300t\212\351r\377\377\377<\006\017\204\345\376\377\377\061\300\220\353\320I\213|$\020H\205\377\017\204j\377\377\377\350\373m", 0x7fbf10bd6c60 <_rtld_local_ro> "",
          0xff878ec2 <error: Cannot access memory at address 0xff878ec2>,
---Type <return> to continue, or q <return> to quit---
          0x1b <error: Cannot access memory at address 0x1b>, 0x1f <error: Cannot access memory at address 0x1f>,
          0x7fbf10ba0768 "0\201\275\020\277\177",
          0x7fbf109bf53e <do_lookup_x+2334> "H\205\300L\213L$\bL\213D$(L\213\\$0\017\205|\370\377\377H\213T$\030H\213t$\020\213\n\351y\377\377\377H\215\r\236\016\001", 0x7fff6967f3f0 "@\365gi\377\177", 0x7fff6967f320 "", 0x7fbf0c57dd28 "",
          0x7fbf0c5810b8 "TQ", 0x7fff6967f430 "0\200\363\001",
          0x3fe1e3b <error: Cannot access memory at address 0x3fe1e3b>, 0x7fff6967f420 "", 0x7fbf106fb1b0 "\340\004", 0x0,
          0x7fbf109bebcc <check_match+300> "\205\300t\212\351r\377\377\377<\006\017\204\345\376\377\377\061\300\220\353\320I\213|$\020H\205\377\017\204j\377\377\377\350\373m", 0x7fbf10ba29c0 "",
          0xf63d4e2e <error: Cannot access memory at address 0xf63d4e2e>,
          0x1b <error: Cannot access memory at address 0x1b>, 0x1f <error: Cannot access memory at address 0x1f>,
          0x7fbf10ba0768 "0\201\275\020\277\177",
          0x7fbf109bf53e <do_lookup_x+2334> "H\205\300L\213L$\bL\213D$(L\213\\$0\017\205|\370\377\377H\213T$\030H\213t$\020\213\n\351y\377\377\377H\215\r\236\016\001", 0x1 <error: Cannot access memory at address 0x1>, 0x7fff6967f3a0 "@b\371\001",
          0x7fbf0c57dd28 "", 0x7fbf0c58a1a8 "2(", 0x7fff6967f4b0 "",
          0x3d8f538 <error: Cannot access memory at address 0x3d8f538>}
        debugbackend = 0x4051f7 "native"

valgrind:

cp
==2966== Parent PID: 20036
==2966== 
==2966== Invalid read of size 8
==2966==    at 0x4E7868F: r_core_file_close (file.c:500)
==2966==    by 0x4048E0: main (radare2.c:651)
==2966==  Address 0x95caeb0 is 48 bytes inside a block of size 88 free'd
==2966==    at 0x4C2999C: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==2966==    by 0x4E78662: r_core_file_free (file.c:494)
==2966==    by 0x83CF07F: r_list_delete (list.c:117)
==2966==    by 0x83CEFFC: r_list_delete_data (list.c:107)
==2966==    by 0x4E786C6: r_core_file_close (file.c:502)
==2966==    by 0x4E76C38: r_core_file_reopen (file.c:43)
==2966==    by 0x4E61061: ??? (cmd_open.c:147)
==2966==    by 0x4E8CA87: r_cmd_call (cmd_api.c:171)
==2966==    by 0x4E7507B: ??? (cmd.c:1404)
==2966==    by 0x4E73849: ??? (cmd.c:964)
==2966==    by 0x4E75A73: r_core_cmd (cmd.c:1587)
==2966==    by 0x4E7366A: r_core_cmd_pipe (cmd.c:919)
==2966== 
==2966== Invalid read of size 8
==2966==    at 0x79713D2: sdb_free (in /usr/local/lib/libr_db.so.0.9.8.git)
==2966==    by 0x796DA92: sdb_ns_set (in /usr/local/lib/libr_db.so.0.9.8.git)
==2966==    by 0x4E4E03E: ??? (core.c:481)
==2966==    by 0x4E4E8B2: r_core_fini (core.c:616)
==2966==    by 0x4048EC: main (radare2.c:652)
==2966==  Address 0x958f620 is 12,448 bytes inside a block of size 12,800 free'd
==2966==    at 0x4C2999C: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==2966==    by 0x7971430: sdb_free (in /usr/local/lib/libr_db.so.0.9.8.git)
==2966==    by 0x775792E: r_syscall_setup (syscall.c:76)
==2966==    by 0x4E79C51: ??? (config.c:248)
==2966==    by 0x5745E02: r_config_set (config.c:174)
==2966==    by 0x4E8512C: ??? (bin.c:197)
==2966==    by 0x4E88A84: r_core_bin_info (bin.c:1076)
==2966==    by 0x4E77B6F: r_core_bin_load (file.c:295)
==2966==    by 0x403D19: main (radare2.c:466)
==2966== 
==2966== 
==2966== HEAP SUMMARY:
==2966==     in use at exit: 317,549 bytes in 3,604 blocks
==2966==   total heap usage: 15,597 allocs, 11,993 frees, 20,071,745 bytes allocated
==2966== 
==2966== LEAK SUMMARY:
==2966==    definitely lost: 94,766 bytes in 1,595 blocks
==2966==    indirectly lost: 71,739 bytes in 1,684 blocks
==2966==      possibly lost: 0 bytes in 0 blocks
==2966==    still reachable: 151,044 bytes in 325 blocks
==2966==         suppressed: 0 bytes in 0 blocks
==2966== Rerun with --leak-check=full to see details of leaked memory
==2966== 
==2966== For counts of detected and suppressed errors, rerun with: -v
==2966== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 1 from 1)

greetings
z.

buf core

r2 -v
1ccd783
also in latest: 57eb5c5
@radare
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Collaborator

radare commented Apr 21, 2014

seems like somewhere is setting io->fd instead of io->fd->fd, i guess that fixing all warnings may help on this issue.

On 21 Apr 2014, at 02:31, zonkzonk [email protected] wrote:

mrn,

traps: r2[2862] general protection ip:7fbf0e95bccc sp:7fff6967f190 error:0 in libr_io.so.0.9.8.git[7fbf0e949000+3c000]

IN:

zzuf -A -i -f xor -r 0.006 -v r2 -c "af,k anal/*cat /tmp/buf" /tmp/cp
where buf is base64 encoded attached.

OUT:

Core was generated by `r2 -c af,k anal/*8???HV@?Z???
fh"?4V?D?0???xLVC?=?<?&??4Fj?nh?'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007fbf0e95bccc in r_io_close (io=0x1f6b950, fd=0x756c617620676e69) at io.c:552
552 int nfd = fd->fd;
(gdb) bt
#0 0x00007fbf0e95bccc in r_io_close (io=0x1f6b950, fd=0x756c617620676e69) at io.c:552
#1 0x00007fbf104826a6 in r_core_file_close (r=0x6068c0 , fh=0x1f9bec0) at file.c:500
#2 0x00000000004048e1 in main (argc=4, argv=0x7fff6967f5f8, envp=0x7fff6967f620) at radare2.c:651

(gdb) x/i $pc
=> 0x7fbf0e95bccc <r_io_close+44>: mov (%rax),%eax
(gdb) list
547
548 // TODO: remove int fd here???
549 R_API int r_io_close(RIO *io, RIODesc *fd) {
550 if (io == NULL || fd == NULL)
551 return -1;
552 int nfd = fd->fd;
553 if (r_io_set_fd (io, fd)) {
554 RIODesc *desc = r_io_desc_get (io, fd->fd);
555 if (desc) {
556 r_io_map_del (io, fd->fd);
(gdb) bt full shortened

    cmdfile = {0x0, 0x1f <error: Cannot access memory at address 0x1f>, 0x7fbf10ba0768 "0\201\275\020\277\177",
      0x7fbf109bebcc <check_match+300> "\205\300t\212\351r\377\377\377<\006\017\204\345\376\377\377\061\300\220\353\320I\213|$\020H\205\377\017\204j\377\377\377\350\373m", 0x7fbf10bd6c60 <_rtld_local_ro> "",
      0xff878ec2 <error: Cannot access memory at address 0xff878ec2>,

---Type to continue, or q to quit---
0x1b <error: Cannot access memory at address 0x1b>, 0x1f <error: Cannot access memory at address 0x1f>,
0x7fbf10ba0768 "0\201\275\020\277\177",
0x7fbf109bf53e <do_lookup_x+2334> "H\205\300L\213L$\bL\213D$(L\213$0\017\205|\370\377\377H\213T$\030H\213t$\020\213\n\351y\377\377\377H\215\r\236\016\001", 0x7fff6967f3f0 "@\365gi\377\177", 0x7fff6967f320 "", 0x7fbf0c57dd28 "",
0x7fbf0c5810b8 "TQ", 0x7fff6967f430 "0\200\363\001",
0x3fe1e3b <error: Cannot access memory at address 0x3fe1e3b>, 0x7fff6967f420 "", 0x7fbf106fb1b0 "\340\004", 0x0,
0x7fbf109bebcc <check_match+300> "\205\300t\212\351r\377\377\377<\006\017\204\345\376\377\377\061\300\220\353\320I\213|$\020H\205\377\017\204j\377\377\377\350\373m", 0x7fbf10ba29c0 "",
0xf63d4e2e <error: Cannot access memory at address 0xf63d4e2e>,
0x1b <error: Cannot access memory at address 0x1b>, 0x1f <error: Cannot access memory at address 0x1f>,
0x7fbf10ba0768 "0\201\275\020\277\177",
0x7fbf109bf53e <do_lookup_x+2334> "H\205\300L\213L$\bL\213D$(L\213$0\017\205|\370\377\377H\213T$\030H\213t$\020\213\n\351y\377\377\377H\215\r\236\016\001", 0x1 <error: Cannot access memory at address 0x1>, 0x7fff6967f3a0 "@b\371\001",
0x7fbf0c57dd28 "", 0x7fbf0c58a1a8 "2(", 0x7fff6967f4b0 "",
0x3d8f538 <error: Cannot access memory at address 0x3d8f538>}
debugbackend = 0x4051f7 "native"
valgrind:

cp
==2966== Parent PID: 20036
==2966==
==2966== Invalid read of size 8
==2966== at 0x4E7868F: r_core_file_close (file.c:500)
==2966== by 0x4048E0: main (radare2.c:651)
==2966== Address 0x95caeb0 is 48 bytes inside a block of size 88 free'd
==2966== at 0x4C2999C: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==2966== by 0x4E78662: r_core_file_free (file.c:494)
==2966== by 0x83CF07F: r_list_delete (list.c:117)
==2966== by 0x83CEFFC: r_list_delete_data (list.c:107)
==2966== by 0x4E786C6: r_core_file_close (file.c:502)
==2966== by 0x4E76C38: r_core_file_reopen (file.c:43)
==2966== by 0x4E61061: ??? (cmd_open.c:147)
==2966== by 0x4E8CA87: r_cmd_call (cmd_api.c:171)
==2966== by 0x4E7507B: ??? (cmd.c:1404)
==2966== by 0x4E73849: ??? (cmd.c:964)
==2966== by 0x4E75A73: r_core_cmd (cmd.c:1587)
==2966== by 0x4E7366A: r_core_cmd_pipe (cmd.c:919)
==2966==
==2966== Invalid read of size 8
==2966== at 0x79713D2: sdb_free (in /usr/local/lib/libr_db.so.0.9.8.git)
==2966== by 0x796DA92: sdb_ns_set (in /usr/local/lib/libr_db.so.0.9.8.git)
==2966== by 0x4E4E03E: ??? (core.c:481)
==2966== by 0x4E4E8B2: r_core_fini (core.c:616)
==2966== by 0x4048EC: main (radare2.c:652)
==2966== Address 0x958f620 is 12,448 bytes inside a block of size 12,800 free'd
==2966== at 0x4C2999C: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==2966== by 0x7971430: sdb_free (in /usr/local/lib/libr_db.so.0.9.8.git)
==2966== by 0x775792E: r_syscall_setup (syscall.c:76)
==2966== by 0x4E79C51: ??? (config.c:248)
==2966== by 0x5745E02: r_config_set (config.c:174)
==2966== by 0x4E8512C: ??? (bin.c:197)
==2966== by 0x4E88A84: r_core_bin_info (bin.c:1076)
==2966== by 0x4E77B6F: r_core_bin_load (file.c:295)
==2966== by 0x403D19: main (radare2.c:466)
==2966==
==2966==
==2966== HEAP SUMMARY:
==2966== in use at exit: 317,549 bytes in 3,604 blocks
==2966== total heap usage: 15,597 allocs, 11,993 frees, 20,071,745 bytes allocated
==2966==
==2966== LEAK SUMMARY:
==2966== definitely lost: 94,766 bytes in 1,595 blocks
==2966== indirectly lost: 71,739 bytes in 1,684 blocks
==2966== possibly lost: 0 bytes in 0 blocks
==2966== still reachable: 151,044 bytes in 325 blocks
==2966== suppressed: 0 bytes in 0 blocks
==2966== Rerun with --leak-check=full to see details of leaked memory
==2966==
==2966== For counts of detected and suppressed errors, rerun with: -v
==2966== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 1 from 1)
greetings
z.

r2 -v
1ccd783

—
Reply to this email directly or view it on GitHub.

@deeso
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Contributor

deeso commented Apr 21, 2014

Can you provide the bin thats causing the segfault.

On Mon, Apr 21, 2014 at 2:50 PM, radare [email protected] wrote:

seems like somewhere is setting io->fd instead of io->fd->fd, i guess that
fixing all warnings may help on this issue.

On 21 Apr 2014, at 02:31, zonkzonk [email protected] wrote:

mrn,

traps: r2[2862] general protection ip:7fbf0e95bccc sp:7fff6967f190
error:0 in libr_io.so.0.9.8.git[7fbf0e949000+3c000]

IN:

zzuf -A -i -f xor -r 0.006 -v r2 -c "af,k anal/*cat /tmp/buf" /tmp/cp
where buf is base64 encoded attached.

OUT:

Core was generated by `r2 -c af,k anal/*8???HV@?Z???
fh"?4V?D?0???xLVC?=?<?&??4Fj?nh?'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007fbf0e95bccc in r_io_close (io=0x1f6b950,
fd=0x756c617620676e69) at io.c:552
552 int nfd = fd->fd;
(gdb) bt
#0 0x00007fbf0e95bccc in r_io_close (io=0x1f6b950,
fd=0x756c617620676e69) at io.c:552
#1 0x00007fbf104826a6 in r_core_file_close (r=0x6068c0 ,
fh=0x1f9bec0) at file.c:500
#2 0x00000000004048e1 in main (argc=4, argv=0x7fff6967f5f8,
envp=0x7fff6967f620) at radare2.c:651

(gdb) x/i $pc
=> 0x7fbf0e95bccc <r_io_close+44>: mov (%rax),%eax
(gdb) list
547
548 // TODO: remove int fd here???
549 R_API int r_io_close(RIO *io, RIODesc *fd) {
550 if (io == NULL || fd == NULL)
551 return -1;
552 int nfd = fd->fd;
553 if (r_io_set_fd (io, fd)) {
554 RIODesc *desc = r_io_desc_get (io, fd->fd);
555 if (desc) {
556 r_io_map_del (io, fd->fd);
(gdb) bt full shortened

cmdfile = {0x0, 0x1f <error: Cannot access memory at address 0x1f>,
0x7fbf10ba0768 "0\201\275\020\277\177",
0x7fbf109bebcc <check_match+300>
"\205\300t\212\351r\377\377\377<\006\017\204\345\376\377\377\061\300\220\353\320I\213|$\020H\205\377\017\204j\377\377\377\350\373m",
0x7fbf10bd6c60 <_rtld_local_ro> "",
0xff878ec2 <error: Cannot access memory at address 0xff878ec2>,
---Type to continue, or q to quit---
0x1b <error: Cannot access memory at address 0x1b>, 0x1f <error: Cannot
access memory at address 0x1f>,
0x7fbf10ba0768 "0\201\275\020\277\177",
0x7fbf109bf53e <do_lookup_x+2334>
"H\205\300L\213L$\bL\213D$(L\213$0\017\205|\370\377\377H\213T$\030H\213t$\020\213\n\351y\377\377\377H\215\r\236\016\001",
0x7fff6967f3f0 "@\365gi\377\177", 0x7fff6967f320 "", 0x7fbf0c57dd28 "",
0x7fbf0c5810b8 "TQ", 0x7fff6967f430 "0\200\363\001",
0x3fe1e3b <error: Cannot access memory at address 0x3fe1e3b>,
0x7fff6967f420 "", 0x7fbf106fb1b0 "\340\004", 0x0,
0x7fbf109bebcc <check_match+300>
"\205\300t\212\351r\377\377\377<\006\017\204\345\376\377\377\061\300\220\353\320I\213|$\020H\205\377\017\204j\377\377\377\350\373m",
0x7fbf10ba29c0 "",
0xf63d4e2e <error: Cannot access memory at address 0xf63d4e2e>,
0x1b <error: Cannot access memory at address 0x1b>, 0x1f <error: Cannot
access memory at address 0x1f>,
0x7fbf10ba0768 "0\201\275\020\277\177",
0x7fbf109bf53e <do_lookup_x+2334>
"H\205\300L\213L$\bL\213D$(L\213$0\017\205|\370\377\377H\213T$\030H\213t$\020\213\n\351y\377\377\377H\215\r\236\016\001",
0x1 <error: Cannot access memory at address 0x1>, 0x7fff6967f3a0
"@b\371\001",
0x7fbf0c57dd28 "", 0x7fbf0c58a1a8 "2(", 0x7fff6967f4b0 "",
0x3d8f538 <error: Cannot access memory at address 0x3d8f538>}
debugbackend = 0x4051f7 "native"
valgrind:

cp
==2966== Parent PID: 20036
==2966==
==2966== Invalid read of size 8
==2966== at 0x4E7868F: r_core_file_close (file.c:500)
==2966== by 0x4048E0: main (radare2.c:651)
==2966== Address 0x95caeb0 is 48 bytes inside a block of size 88 free'd
==2966== at 0x4C2999C: free (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==2966== by 0x4E78662: r_core_file_free (file.c:494)
==2966== by 0x83CF07F: r_list_delete (list.c:117)
==2966== by 0x83CEFFC: r_list_delete_data (list.c:107)
==2966== by 0x4E786C6: r_core_file_close (file.c:502)
==2966== by 0x4E76C38: r_core_file_reopen (file.c:43)
==2966== by 0x4E61061: ??? (cmd_open.c:147)
==2966== by 0x4E8CA87: r_cmd_call (cmd_api.c:171)
==2966== by 0x4E7507B: ??? (cmd.c:1404)
==2966== by 0x4E73849: ??? (cmd.c:964)
==2966== by 0x4E75A73: r_core_cmd (cmd.c:1587)
==2966== by 0x4E7366A: r_core_cmd_pipe (cmd.c:919)
==2966==
==2966== Invalid read of size 8
==2966== at 0x79713D2: sdb_free (in /usr/local/lib/libr_db.so.0.9.8.git)
==2966== by 0x796DA92: sdb_ns_set (in
/usr/local/lib/libr_db.so.0.9.8.git)
==2966== by 0x4E4E03E: ??? (core.c:481)
==2966== by 0x4E4E8B2: r_core_fini (core.c:616)
==2966== by 0x4048EC: main (radare2.c:652)
==2966== Address 0x958f620 is 12,448 bytes inside a block of size 12,800
free'd
==2966== at 0x4C2999C: free (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==2966== by 0x7971430: sdb_free (in /usr/local/lib/libr_db.so.0.9.8.git)
==2966== by 0x775792E: r_syscall_setup (syscall.c:76)
==2966== by 0x4E79C51: ??? (config.c:248)
==2966== by 0x5745E02: r_config_set (config.c:174)
==2966== by 0x4E8512C: ??? (bin.c:197)
==2966== by 0x4E88A84: r_core_bin_info (bin.c:1076)
==2966== by 0x4E77B6F: r_core_bin_load (file.c:295)
==2966== by 0x403D19: main (radare2.c:466)
==2966==
==2966==
==2966== HEAP SUMMARY:
==2966== in use at exit: 317,549 bytes in 3,604 blocks
==2966== total heap usage: 15,597 allocs, 11,993 frees, 20,071,745 bytes
allocated
==2966==
==2966== LEAK SUMMARY:
==2966== definitely lost: 94,766 bytes in 1,595 blocks
==2966== indirectly lost: 71,739 bytes in 1,684 blocks
==2966== possibly lost: 0 bytes in 0 blocks
==2966== still reachable: 151,044 bytes in 325 blocks
==2966== suppressed: 0 bytes in 0 blocks
==2966== Rerun with --leak-check=full to see details of leaked memory
==2966==
==2966== For counts of detected and suppressed errors, rerun with: -v
==2966== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 1 from 1)
greetings
z.

r2 -v
1ccd783

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Reply to this email directly or view it on GitHub.

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Reply to this email directly or view it on GitHubhttps://github.com//issues/797#issuecomment-40969658
.

PhD Student, Rice University
Office: Duncan Hall 1083
Office Hours: M 11-12p

@zonkzonk
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@deeso:
cp

@deeso
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deeso commented Apr 23, 2014

No more bug reports this month ;), this one was hard. Please check to see if it was fixed. c6a7faa

@deeso deeso closed this as completed Apr 23, 2014
@zonkzonk
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hey ;) Hitting ^D a lot of times here, cannot reproduce. Thanks!

yossizap pushed a commit to yossizap/radare2 that referenced this issue Dec 30, 2019
@ITAYC0HEN
Fixed an extra empty row inside Vertical View in Function Widget (rad…
7c37d34 
…areorg#797)

* Fixed an extra empty row inside Vertical View in Function Widget

* Should use full column name inside Vertical view
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@radare @deeso @zonkzonk