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Date: Mon, 20 Feb 2012 12:15:31 +0100 From: Jiri Slaby <jslaby@...e.cz> To: Sasha Levin <levinsasha928@...il.com> CC: Jiri Slaby <jirislaby@...il.com>, gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 1/1] TTY: fix PTY hangup vs close race On 02/20/2012 11:20 AM, Sasha Levin wrote: >> [*] Your dump reveals that the code fetches tty->driver_data (mov >> 0x428(%rdi),%rbx) and traps at a fetch of inode->i_sbm because inode is >> NULL (mov 0x28(%rbx),%rax). > > It actually looks even more complex than that. I reverted the patch > above, but still got the error. A quick bisection pointed me to > a50f724a432997321cabb6c9e665c28e34850f78. > Looks like reverting both actually solves the problem. Reverting just > one of them doesn't. Ah, I see. I suppose you have CONFIG_LEGACY_PTYS=y. I somehow overlooked that case. So both of them should be reverted in upstream: d3bda5298aad98c7a27678bdd0dd9d008ab9e685 a50f724a432997321cabb6c9e665c28e34850f78 thanks, -- js suse labs -- 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 Please read the FAQ at http://www.tux.org/lkml/
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