[Varnish] #1166: Varnishadm throws an assert

[Varnish]

#1166: Varnishadm throws an assert
------------------------+-----------------------
 Reporter:  rj@…        |       Owner:
     Type:  defect      |      Status:  reopened
 Priority:  normal      |   Milestone:
Component:  varnishadm  |     Version:  3.0.2
 Severity:  normal      |  Resolution:
 Keywords:  varnishadm  |
------------------------+-----------------------
Changes (by lampe):

 * status:  closed => reopened
 * resolution:  worksforme =>


Comment:

 Hi.

 I get the same assert when resizing the window with the running
 varnishadm. varnishadm receives a SIGWINCH signal and aborts:

 {{{
 varnish> Assert error in pass(), varnishadm.c line 226:
   Condition(i > 0) not true.
   errno = 4 (Interrupted system call)
 Aborted
 }}}

 Here's the strace output:

 {{{
 write(1, "varnish> ", 9varnish> )                = 9
 poll([{fd=4, events=POLLIN}, {fd=0, events=POLLIN}], 2, -1) = ?
 ERESTART_RESTARTBLOCK (To be restarted)
 --- SIGWINCH (Window changed) @ 0 (0) ---
 rt_sigprocmask(SIG_BLOCK, [WINCH], [WINCH], 8) = 0
 rt_sigprocmask(SIG_BLOCK, [WINCH], [WINCH], 8) = 0
 ioctl(0, TIOCGWINSZ, {ws_row=50, ws_col=131, ws_xpixel=0, ws_ypixel=0}) =
 0
 rt_sigprocmask(SIG_SETMASK, [WINCH], NULL, 8) = 0
 rt_sigaction(SIGWINCH, {SIG_DFL, [WINCH], SA_RESTORER|SA_RESTART,
 0x7f28c82b0230}, {0x7f28c8cd50d0, [WINCH], SA_RESTORER|SA_RESTART,
 0x7f28c82b0230}, 8) = 0
 rt_sigprocmask(SIG_SETMASK, [WINCH], NULL, 8) = 0
 kill(0, SIGWINCH)                       = 0
 rt_sigreturn(0)                         = -1 EINTR (Interrupted system
 call)
 --- SIGWINCH (Window changed) @ 0 (0) ---
 write(2, "Assert error in pass(), varnisha"..., 76Assert error in pass(),
 varnishadm.c line 226:
   Condition(i > 0) not true.
 ) = 76
 write(2, "  errno = 4 (Interrupted system "..., 38  errno = 4 (Interrupted
 system call)
 ) = 38
 rt_sigprocmask(SIG_UNBLOCK, [ABRT], NULL, 8) = 0
 tgkill(23330, 23330, SIGABRT)           = 0
 --- SIGABRT (Aborted) @ 0 (0) ---
 +++ killed by SIGABRT +++
 Aborted
 }}}

-- 
Ticket URL: <https://www.varnish-cache.org/trac/ticket/1166#comment:3>
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