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Date: Thu, 13 Jun 2013 12:29:31 -0400 From: Peter Hurley <peter@...leysoftware.com> To: Markus Trippelsdorf <markus@...ppelsdorf.de> CC: linux-kernel@...r.kernel.org, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Jiri Slaby <jslaby@...e.cz>, Mikael Pettersson <mikpe@...uu.se>, David Howells <dhowells@...hat.com>, Orion Poplawski <orion@...a.nwra.com> Subject: Re: [PATCH] tty: Debug EIO from write() On 06/13/2013 12:16 PM, Markus Trippelsdorf wrote: > I've reproduced the Mozilla build failure, but there's nothing exiting > in the logs. The only strange thing is the single tty_write at > 1507.456817 (roughly at this point the Mozilla build failed): > > ... > [ 1507.453547] tty_release: pts11 (tty count=4)... > [ 1507.455695] tty_open: opening pts11... > [ 1507.455699] tty_release: pts11 (tty count=4)... > [ 1507.455854] tty_open: opening pts11... > [ 1507.455858] tty_release: pts11 (tty count=4)... > [ 1507.456815] tty_open: opening pts11... > [ 1507.456817] tty_write: pts11: 0xa03 Totally obvious now, thanks! Patch coming. > [ 1507.456819] tty_release: pts11 (tty count=4)... > [ 1507.457313] tty_open: opening pts11... > [ 1507.457317] tty_release: pts11 (tty count=4)... > [ 1507.458711] tty_open: opening pts11... > [ 1507.458715] tty_release: pts11 (tty count=4)... > [ 1507.458918] tty_open: opening pts11... > [ 1507.458922] tty_release: pts11 (tty count=4)... > [ 1507.459062] tty_open: opening pts11... > [ 1507.459066] tty_release: pts11 (tty count=4)... > ... > > Looking through my logs I see a few ldisc errors, but please note that they are > all unrelated to the actual Mozilla failure. > > Jun 13 17:31:07 x4 kernel: tty_open: opening pts11... > Jun 13 17:31:07 x4 kernel: tty_release: pts11 (tty count=4)... > Jun 13 17:31:08 x4 kernel: tty_release: ptm1 (tty count=1)... > Jun 13 17:31:08 x4 kernel: tty_read: pts1: ldisc error (0xa05) These "ldisc error"s are expected. In this case, the master end has closed while the slave end is reading.... > Jun 13 17:31:08 x4 kernel: pts1 vhangup... > Jun 13 17:31:08 x4 kernel: hung_up_tty_write: pts1: 0x200a05 and writing. The others in this snippet are similar. > Jun 13 17:31:08 x4 kernel: tty_release: pts1 (tty count=2)... > Jun 13 17:31:08 x4 kernel: tty_release: ptm1: final close > Jun 13 17:31:08 x4 kernel: tty_release: ptm1: freeing structure... > Jun 13 17:31:08 x4 kernel: tty_release: ptm0 (tty count=1)... > Jun 13 17:31:08 x4 kernel: pts0 vhangup... > Jun 13 17:31:08 x4 kernel: tty_release: pts0 (tty count=1)... > Jun 13 17:31:08 x4 kernel: tty_release: pts0: final close > Jun 13 17:31:08 x4 kernel: tty_release: pts0: freeing structure... > Jun 13 17:31:08 x4 kernel: tty_release: tty1 (tty count=8)... > Jun 13 17:31:08 x4 kernel: tty_release: tty3 (tty count=1)... > Jun 13 17:31:08 x4 kernel: tty_release: tty3: final close > Jun 13 17:31:08 x4 kernel: tty_release: tty3: freeing structure... > Jun 13 17:31:11 x4 kernel: tty_open: opening tty1... > Jun 13 17:31:11 x4 kernel: tty_open: opening tty1... > Jun 13 17:31:11 x4 kernel: tty_release: tty1 (tty count=9)... > Jun 13 17:31:13 x4 kernel: tty_release: tty1 (tty count=8)... > Jun 13 17:31:13 x4 kernel: tty_release: tty2 (tty count=1)... > Jun 13 17:31:13 x4 kernel: tty_release: tty2: final close > Jun 13 17:31:13 x4 kernel: tty_release: tty2: freeing structure... > Jun 13 17:31:13 x4 kernel: tty_release: pts6 (tty count=2)... > Jun 13 17:31:13 x4 kernel: tty1 vhangup session... > Jun 13 17:31:13 x4 kernel: tty_open: opening pts2... > Jun 13 17:31:13 x4 kernel: tty_release: ptm5 (tty count=1)... > Jun 13 17:31:13 x4 kernel: pts5 vhangup... > Jun 13 17:31:13 x4 kernel: tty_release: ptm6 (tty count=1)... > Jun 13 17:31:13 x4 kernel: pts6 vhangup... > Jun 13 17:31:13 x4 kernel: tty_release: ptm6: final close > Jun 13 17:31:13 x4 kernel: tty_release: ptm6: freeing structure... > Jun 13 17:31:13 x4 kernel: tty_release: ptm7 (tty count=1)... > Jun 13 17:31:13 x4 kernel: pts7 vhangup... > Jun 13 17:31:13 x4 kernel: tty_release: pts5 (tty count=1)... > Jun 13 17:31:13 x4 kernel: tty_release: pts5: final close > Jun 13 17:31:13 x4 kernel: tty_release: pts5: freeing structure... > Jun 13 17:31:13 x4 kernel: tty_read: pts7: ldisc error (0x200805) > Jun 13 17:31:13 x4 kernel: tty_release: ptm8 (tty count=1)... > Jun 13 17:31:13 x4 kernel: pts8 vhangup... > Jun 13 17:31:13 x4 kernel: tty_read: pts8: ldisc error (0x200805) > Jun 13 17:31:13 x4 kernel: tty_release: tty1 (tty count=7)... > Jun 13 17:31:13 x4 kernel: tty_release: tty1 (tty count=6)... > Jun 13 17:31:13 x4 kernel: tty_release: ptm9 (tty count=1)... > Jun 13 17:31:13 x4 kernel: pts9 vhangup... > Jun 13 17:31:13 x4 kernel: tty_release: ptm10 (tty count=1)... > Jun 13 17:31:13 x4 kernel: pts10 vhangup... > Jun 13 17:31:13 x4 kernel: hung_up_tty_write: pts10: 0x40a04 > Jun 13 17:31:13 x4 kernel: hung_up_tty_write: pts10: 0x40a04 > Jun 13 17:31:13 x4 kernel: tty_open: opening tty1... > Jun 13 17:31:13 x4 kernel: tty_release: ptm3 (tty count=1)... > Jun 13 17:31:13 x4 kernel: pts3 vhangup... > Jun 13 17:31:13 x4 kernel: tty_read: pts3: ldisc error (0x200805) > Jun 13 17:31:13 x4 kernel: tty_release: pts7 (tty count=2)... > Jun 13 17:31:13 x4 kernel: tty_release: pts7 (tty count=1)... > Jun 13 17:31:13 x4 kernel: tty_release: pts7: final close > Jun 13 17:31:13 x4 kernel: tty_release: pts7: freeing structure... > Jun 13 17:31:13 x4 kernel: tty_release: pts4 (tty count=2)... > Jun 13 17:31:13 x4 kernel: tty_open: opening tty2... > Jun 13 17:31:13 x4 kernel: tty_release: tty2 (tty count=1)... > Jun 13 17:31:13 x4 kernel: tty_release: tty2: final close > Jun 13 17:31:13 x4 kernel: tty_release: tty2: freeing structure... > Jun 13 17:31:13 x4 kernel: tty_open: opening tty2... > Jun 13 17:31:13 x4 kernel: tty_release: tty1 (tty count=6)... > Jun 13 17:31:13 x4 kernel: tty_release: ptm4 (tty count=1)... > Jun 13 17:31:13 x4 kernel: pts4 vhangup... > Jun 13 17:31:13 x4 kernel: tty_release: ptm4: final close > Jun 13 17:31:13 x4 kernel: tty_release: ptm4: freeing structure... > Jun 13 17:31:13 x4 kernel: tty_release: ptm11 (tty count=1)... > Jun 13 17:31:13 x4 kernel: pts11 vhangup... > Jun 13 17:31:13 x4 kernel: tty_read: pts11: ldisc error (0x200a05) > Jun 13 17:31:13 x4 kernel: tty_release: pts11 (tty count=3)... > Jun 13 17:31:13 x4 kernel: tty_release: pts11 (tty count=2)... > Jun 13 17:31:13 x4 kernel: tty_release: ptm11: final close > Jun 13 17:31:13 x4 kernel: tty_release: ptm11: freeing structure... > Jun 13 17:31:13 x4 kernel: tty_release: ptm2 (tty count=1)... > Jun 13 17:31:13 x4 kernel: pts2 vhangup... > Jun 13 17:31:13 x4 kernel: tty_read: pts2: ldisc error (0x200a05) > Jun 13 17:31:13 x4 kernel: tty_release: pts2 (tty count=3)... > Jun 13 17:31:13 x4 kernel: tty_release: pts3 (tty count=2)... > Jun 13 17:31:13 x4 kernel: hung_up_tty_write: pts3: 0x40a06 > Jun 13 17:31:13 x4 kernel: hung_up_tty_write: pts3: 0x40a06 > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html 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