#7859: poll() on fd of an exited process returns wrong revents
----------------------------+----------------------------
Reporter: scgtrp | Owner: phoudoin
Type: bug | Status: closed
Priority: high | Milestone: R1/beta1
Component: System/POSIX | Version: R1/Development
Resolution: fixed | Keywords:
Blocked By: | Blocking:
Has a Patch: 1 | Platform: All
----------------------------+----------------------------
Comment (by anevilyak):
This revision may have introduced a regression of some form. Attempting to
build webkit now results in perl hanging with the following backtrace:
{{{
kdebug> threads 21966
thread id state wait for object cpu pri stack
team name
0x907cf600 21966 waiting other - 10
0x822df00021966 perl
kdebug> bt 21966
stack trace for thread 21966 "perl"
kernel stack: 0x822df000 to 0x822e3000
user stack: 0x710f1000 to 0x720f1000
frame caller <image>:function + offset
0 822e2d94 (+ 80) 8007d789 <kernel_x86> thread_block + 0xf9
1 822e2de4 (+ 48) 800d710a <kernel_x86>
fifo::Inode<0xec2cf478>::WaitForReadRequest(fifo::ReadRequest&:
0x822e2e94) + 0x8a
2 822e2e14 (+ 64) 800d7302 <kernel_x86>
fifo::Inode<0xec2cf478>::ReadDataFromBuffer(void*: 0x194c12a8, unsigned
long*: 0x822e2e90, false, true, fifo::ReadR
equest&: 0x822e2e94) + 0x72
3 822e2e54 (+ 112) 800d752b <kernel_x86>
_ZN4fifoL9fifo_readEP9fs_volumeP8fs_vnodePvxS4_Pm + 0xcb
4 822e2ec4 (+ 48) 800e04cd <kernel_x86> file_read(file_descriptor*:
0xf4f42440, int64: 0, void*: 0x194c12a8, unsigned long*: 0x822e2f50) +
0x3d
5 822e2ef4 (+ 80) 800d5122 <kernel_x86> common_user_io(int32:
424415912, int64: 8192, void*: 0x194c12a8, uint32: 0x2000 (8192), false) +
0x102
6 822e2f44 (+ 100) 80129c0f <kernel_x86> handle_syscall + 0xdc
user iframe at 0x822e2fa8 (end = 0x822e3000)
eax 0x8e ebx 0x9d910c ecx 0x720ee7ac edx 0x6110c114
esi 0x19419ba8 edi 0x4 ebp 0x720ee7d8 esp 0x822e2fdc
eip 0x6110c114 eflags 0x3202 user esp 0x720ee7ac
vector: 0x63, error code: 0x0
7 822e2fa8 (+ 0) 6110c114 <commpage> commpage_syscall + 0x04
8 720ee7d8 (+ 48) 00c31fae <libperl.so> PerlIOUnix_read + 0x55
9 720ee808 (+ 32) 00c3534a <libperl.so> Perl_PerlIO_read + 0x39
10 720ee828 (+ 64) 00c354bd <libperl.so> PerlIOBuf_fill + 0x145
11 720ee868 (+ 32) 00c33d56 <libperl.so> Perl_PerlIO_fill + 0x33
12 720ee888 (+ 64) 00c352a6 <libperl.so> PerlIOBase_read + 0xe8
13 720ee8c8 (+ 32) 00c3555e <libperl.so> PerlIOBuf_read + 0x3e
14 720ee8e8 (+ 32) 00c3534a <libperl.so> Perl_PerlIO_read + 0x39
15 720ee908 (+ 48) 00c36c91 <libperl.so> PerlIO_getc + 0x20
16 720ee938 (+8384) 00be2565 <libperl.so> Perl_sv_gets + 0x8f7
17 720f09f8 (+ 112) 00bd0654 <libperl.so> Perl_do_readline + 0x576
18 720f0a68 (+ 48) 00bd0dbe <libperl.so> Perl_pp_readline + 0x27e
19 720f0a98 (+ 16) 00bcc3f5 <libperl.so> Perl_runops_standard + 0x21
20 720f0aa8 (+ 160) 00b6b632 <libperl.so> Perl_call_sv + 0x302
21 720f0b48 (+ 128) 00b6d0d4 <libperl.so> Perl_call_list + 0x169
22 720f0bc8 (+ 48) 00b57dbd <libperl.so> _init (nearest) + 0x4ee5
23 720f0bf8 (+ 112) 00b66b85 <libperl.so> Perl_newATTRSUB_flags + 0xc80
24 720f0c68 (+ 48) 00b66d0c <libperl.so> Perl_newATTRSUB + 0x28
25 720f0c98 (+ 80) 00b68bb9 <libperl.so> Perl_utilize + 0x5a4
26 720f0ce8 (+ 112) 00b92df8 <libperl.so> Perl_yyparse + 0x855
27 720f0d58 (+ 272) 00b70f3a <libperl.so> perl_parse + 0x1af0
28 720f0e68 (+ 64) 015f9bf3 <perl> main + 0x99
29 720f0ea8 (+ 64) 015f9a1b <perl> _start + 0x50
30 720f0ee8 (+ 80) 02224fc1 </boot/system/runtime_loader@0x02214000>
<unknown> + 0x10fc1
31 720f0f38 (+ 0) 6110c250 <commpage> commpage_thread_exit + 0x00
}}}
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Ticket URL: <https://dev.haiku-os.org/ticket/7859#comment:13>
Haiku <https://dev.haiku-os.org>
The Haiku operating system.
