From: Sasha Levin <sasha.levin@oracle.com>
To: Hugh Dickins <hughd@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: mm: shm: hang in shmem_fallocate
Date: Sun, 15 Dec 2013 23:01:20 -0500 [thread overview]
Message-ID: <52AE7B10.2080201@oracle.com> (raw)
Hi all,
While fuzzing with trinity inside a KVM tools guest running latest -next, I've noticed that
quite often there's a hang happening inside shmem_fallocate. There are several processes stuck
trying to acquire inode->i_mutex (for more than 2 minutes), while the process that holds it has
the following stack trace:
[ 2059.561282] Call Trace:
[ 2059.561557] [<ffffffff81175588>] ? sched_clock_cpu+0x108/0x120
[ 2059.562444] [<ffffffff8118e1fa>] ? get_lock_stats+0x2a/0x60
[ 2059.563247] [<ffffffff8118e23e>] ? put_lock_stats+0xe/0x30
[ 2059.563930] [<ffffffff8118e1fa>] ? get_lock_stats+0x2a/0x60
[ 2059.564646] [<ffffffff810adc13>] ? x2apic_send_IPI_mask+0x13/0x20
[ 2059.565431] [<ffffffff811b3224>] ? __rcu_read_unlock+0x44/0xb0
[ 2059.566161] [<ffffffff811d48d5>] ? generic_exec_single+0x55/0x80
[ 2059.566992] [<ffffffff8128bd45>] ? page_remove_rmap+0x295/0x320
[ 2059.567782] [<ffffffff843afe8c>] ? _raw_spin_lock+0x6c/0x80
[ 2059.568390] [<ffffffff8127c6cc>] ? zap_pte_range+0xec/0x590
[ 2059.569157] [<ffffffff8127c8d0>] ? zap_pte_range+0x2f0/0x590
[ 2059.569907] [<ffffffff810c6560>] ? flush_tlb_mm_range+0x360/0x360
[ 2059.570855] [<ffffffff843aa863>] ? preempt_schedule+0x53/0x80
[ 2059.571613] [<ffffffff81077086>] ? ___preempt_schedule+0x56/0xb0
[ 2059.572526] [<ffffffff810c6536>] ? flush_tlb_mm_range+0x336/0x360
[ 2059.573368] [<ffffffff8127a6eb>] ? tlb_flush_mmu+0x3b/0x90
[ 2059.574152] [<ffffffff8127a754>] ? tlb_finish_mmu+0x14/0x40
[ 2059.574951] [<ffffffff8127d276>] ? zap_page_range_single+0x146/0x160
[ 2059.575797] [<ffffffff81193768>] ? trace_hardirqs_on+0x8/0x10
[ 2059.576629] [<ffffffff8127d303>] ? unmap_mapping_range+0x73/0x180
[ 2059.577362] [<ffffffff8127d38e>] ? unmap_mapping_range+0xfe/0x180
[ 2059.578194] [<ffffffff8125eeb7>] ? truncate_inode_page+0x37/0x90
[ 2059.579013] [<ffffffff8126bc61>] ? shmem_undo_range+0x711/0x830
[ 2059.579807] [<ffffffff8127d3f8>] ? unmap_mapping_range+0x168/0x180
[ 2059.580729] [<ffffffff8126bd98>] ? shmem_truncate_range+0x18/0x40
[ 2059.581598] [<ffffffff8126c0a9>] ? shmem_fallocate+0x99/0x2f0
[ 2059.582325] [<ffffffff81278eae>] ? madvise_vma+0xde/0x1c0
[ 2059.583049] [<ffffffff8119555a>] ? __lock_release+0x1da/0x1f0
[ 2059.583816] [<ffffffff812d0cb6>] ? do_fallocate+0x126/0x170
[ 2059.584581] [<ffffffff81278ec4>] ? madvise_vma+0xf4/0x1c0
[ 2059.585302] [<ffffffff81279118>] ? SyS_madvise+0x188/0x250
[ 2059.586012] [<ffffffff843ba5d0>] ? tracesys+0xdd/0xe2
[ 2059.586689] ffff880f39bc3db8 0000000000000002 ffff880fce4b0000 ffff880fce4b0000
[ 2059.587768] ffff880f39bc2010 00000000001d78c0 00000000001d78c0 00000000001d78c0
[ 2059.588840] ffff880fce6a0000 ffff880fce4b0000 ffff880fe5bd6d40 ffff880fa88e8ab0
Thanks,
Sasha
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next reply other threads:[~2013-12-16 4:04 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-16 4:01 Sasha Levin [this message]
2014-02-08 19:46 ` mm: shm: hang in shmem_fallocate Sasha Levin
2014-02-09 3:25 ` Hugh Dickins
2014-02-10 1:41 ` Sasha Levin
2014-06-12 20:38 ` Sasha Levin
2014-06-16 2:29 ` Hugh Dickins
2014-06-17 20:32 ` Sasha Levin
2014-06-24 16:31 ` Vlastimil Babka
2014-06-25 22:36 ` Hugh Dickins
2014-06-26 9:14 ` Vlastimil Babka
2014-06-26 15:19 ` Vlastimil Babka
2014-06-27 5:36 ` Hugh Dickins
2014-07-01 11:52 ` Vlastimil Babka
2014-07-02 1:49 ` Hugh Dickins
2014-07-09 21:59 ` Johannes Weiner
2014-07-09 22:48 ` Hugh Dickins
2014-07-10 0:51 ` Hugh Dickins
2014-06-26 15:11 ` Sasha Levin
2014-06-27 5:59 ` Hugh Dickins
2014-06-27 14:50 ` Sasha Levin
2014-06-27 18:03 ` Hugh Dickins
2014-06-28 21:41 ` Sasha Levin
2014-07-01 22:37 ` mm: shmem: hang in shmem_fault (WAS: mm: shm: hang in shmem_fallocate) Sasha Levin
2014-07-02 0:17 ` Hugh Dickins
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