From: Dmitry Monakhov <dmonakhov@openvz.org>
To: linux-ext4@vger.kernel.org
Cc: tytso@mit.edu, jack@suse.cz, wenqing.lz@taobao.com,
Dmitry Monakhov <dmonakhov@openvz.org>
Subject: [PATCH 3/3] ext4: undegister es_shrinker if mount failed
Date: Fri, 22 Mar 2013 20:18:43 +0400 [thread overview]
Message-ID: <1363969123-16852-3-git-send-email-dmonakhov@openvz.org> (raw)
In-Reply-To: <1363969123-16852-1-git-send-email-dmonakhov@openvz.org>
Otherwise destroyed ext_sb_info will be part of global shinker list and result in
following OOPS:
JBD2: corrupted journal superblock
JBD2: recovery failed
EXT4-fs (dm-2): error loading journal
general protection fault: 0000 [#1] SMP
Modules linked in: fuse acpi_cpufreq freq_table mperf coretemp kvm_intel kvm crc32c_intel microcode sg button sd_mod crc_t10dif ahci libahci pata_acpi ata_generic dm_mirror dm_region_hash dm_log dm_\
mod
CPU 1
Pid: 2758, comm: mount Not tainted 3.8.0-rc3+ #136 /DH55TC
RIP: 0010:[<ffffffff811bfb2d>] [<ffffffff811bfb2d>] unregister_shrinker+0xad/0xe0
RSP: 0000:ffff88011d5cbcd8 EFLAGS: 00010207
RAX: 6b6b6b6b6b6b6b6b RBX: 6b6b6b6b6b6b6b53 RCX: 0000000000000006
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000246
RBP: ffff88011d5cbce8 R08: 0000000000000002 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88011cd3f848
R13: ffff88011cd3f830 R14: ffff88011cd3f000 R15: 0000000000000000
FS: 00007f7b721dd7e0(0000) GS:ffff880121a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00007fffa6f75038 CR3: 000000011bc1c000 CR4: 00000000000007e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process mount (pid: 2758, threadinfo ffff88011d5ca000, task ffff880116aacb80)
Stack:
ffff88011cd3f000 ffffffff8209b6c0 ffff88011d5cbd18 ffffffff812482f1
00000000000003f3 00000000ffffffea ffff880115f4c200 0000000000000000
ffff88011d5cbda8 ffffffff81249381 ffff8801219d8bf8 ffffffff00000000
Call Trace:
[<ffffffff812482f1>] deactivate_locked_super+0x91/0xb0
[<ffffffff81249381>] mount_bdev+0x331/0x340
[<ffffffff81376730>] ? ext4_alloc_flex_bg_array+0x180/0x180
[<ffffffff81362035>] ext4_mount+0x15/0x20
[<ffffffff8124869a>] mount_fs+0x9a/0x2e0
[<ffffffff81277e25>] vfs_kern_mount+0xc5/0x170
[<ffffffff81279c02>] do_new_mount+0x172/0x2e0
[<ffffffff8127aa56>] do_mount+0x376/0x380
[<ffffffff8127ab98>] sys_mount+0x138/0x150
[<ffffffff818ffed9>] system_call_fastpath+0x16/0x1b
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
---
fs/ext4/super.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index c7e1509..8196ca2 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4008,6 +4008,7 @@ failed_mount_wq:
sbi->s_journal = NULL;
}
failed_mount3:
+ ext4_es_unregister_shrinker(sb);
del_timer(&sbi->s_err_report);
if (sbi->s_flex_groups)
ext4_kvfree(sbi->s_flex_groups);
--
1.7.1
next prev parent reply other threads:[~2013-03-22 16:19 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-22 16:18 [PATCH 1/3] jbd2: fix race between jbd2_journal_remove_checkpoint and ->j_commit_callback Dmitry Monakhov
2013-03-22 16:18 ` [PATCH 2/3] ext4: fix journal callback list traversal Dmitry Monakhov
2013-03-26 21:48 ` Jan Kara
2013-03-22 16:18 ` Dmitry Monakhov [this message]
2013-03-23 2:31 ` [PATCH 3/3] ext4: undegister es_shrinker if mount failed Zheng Liu
2013-04-01 14:49 ` Theodore Ts'o
2013-03-26 21:34 ` [PATCH 1/3] jbd2: fix race between jbd2_journal_remove_checkpoint and ->j_commit_callback Jan Kara
2013-03-27 2:56 ` Theodore Ts'o
2013-03-27 9:22 ` [PATCH 1/3] jbd2: fix race between jbd2_journal_remove_checkpoint and ->j_commit_callback V2 Dmitry Monakhov
2013-03-27 9:22 ` [PATCH 2/3] ext4: fix journal callback list traversal V2 Dmitry Monakhov
2013-03-27 14:16 ` Theodore Ts'o
2013-03-27 9:22 ` [PATCH 3/3] ext4: undegister es_shrinker if mount failed Dmitry Monakhov
2013-03-27 14:17 ` Theodore Ts'o
2013-03-27 14:16 ` [PATCH 1/3] jbd2: fix race between jbd2_journal_remove_checkpoint and ->j_commit_callback V2 Theodore Ts'o
2013-03-27 14:32 ` Jan Kara
2013-03-27 14:49 ` Theodore Ts'o
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