From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Josef Bacik <josef@toxicpanda.com>,
David Sterba <dsterba@suse.com>, Sasha Levin <sashal@kernel.org>,
linux-btrfs@vger.kernel.org
Subject: [PATCH AUTOSEL 4.9 17/19] btrfs: do not BUG_ON in link_to_fixup_dir
Date: Mon, 24 May 2021 10:51:04 -0400 [thread overview]
Message-ID: <20210524145106.2499571-17-sashal@kernel.org> (raw)
In-Reply-To: <20210524145106.2499571-1-sashal@kernel.org>
From: Josef Bacik <josef@toxicpanda.com>
[ Upstream commit 91df99a6eb50d5a1bc70fff4a09a0b7ae6aab96d ]
While doing error injection testing I got the following panic
kernel BUG at fs/btrfs/tree-log.c:1862!
invalid opcode: 0000 [#1] SMP NOPTI
CPU: 1 PID: 7836 Comm: mount Not tainted 5.13.0-rc1+ #305
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-2.fc32 04/01/2014
RIP: 0010:link_to_fixup_dir+0xd5/0xe0
RSP: 0018:ffffb5800180fa30 EFLAGS: 00010216
RAX: fffffffffffffffb RBX: 00000000fffffffb RCX: ffff8f595287faf0
RDX: ffffb5800180fa37 RSI: ffff8f5954978800 RDI: 0000000000000000
RBP: ffff8f5953af9450 R08: 0000000000000019 R09: 0000000000000001
R10: 000151f408682970 R11: 0000000120021001 R12: ffff8f5954978800
R13: ffff8f595287faf0 R14: ffff8f5953c77dd0 R15: 0000000000000065
FS: 00007fc5284c8c40(0000) GS:ffff8f59bbd00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc5287f47c0 CR3: 000000011275e002 CR4: 0000000000370ee0
Call Trace:
replay_one_buffer+0x409/0x470
? btree_read_extent_buffer_pages+0xd0/0x110
walk_up_log_tree+0x157/0x1e0
walk_log_tree+0xa6/0x1d0
btrfs_recover_log_trees+0x1da/0x360
? replay_one_extent+0x7b0/0x7b0
open_ctree+0x1486/0x1720
btrfs_mount_root.cold+0x12/0xea
? __kmalloc_track_caller+0x12f/0x240
legacy_get_tree+0x24/0x40
vfs_get_tree+0x22/0xb0
vfs_kern_mount.part.0+0x71/0xb0
btrfs_mount+0x10d/0x380
? vfs_parse_fs_string+0x4d/0x90
legacy_get_tree+0x24/0x40
vfs_get_tree+0x22/0xb0
path_mount+0x433/0xa10
__x64_sys_mount+0xe3/0x120
do_syscall_64+0x3d/0x80
entry_SYSCALL_64_after_hwframe+0x44/0xae
We can get -EIO or any number of legitimate errors from
btrfs_search_slot(), panicing here is not the appropriate response. The
error path for this code handles errors properly, simply return the
error.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/btrfs/tree-log.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 9909b63d2acd..5c86fecaf167 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -1600,8 +1600,6 @@ static noinline int link_to_fixup_dir(struct btrfs_trans_handle *trans,
ret = btrfs_update_inode(trans, root, inode);
} else if (ret == -EEXIST) {
ret = 0;
- } else {
- BUG(); /* Logic Error */
}
iput(inode);
--
2.30.2
next prev parent reply other threads:[~2021-05-24 15:17 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-24 14:50 [PATCH AUTOSEL 4.9 01/19] platform/x86: hp_accel: Avoid invoking _INI to speed up resume Sasha Levin
2021-05-24 14:50 ` [PATCH AUTOSEL 4.9 02/19] serial: max310x: unregister uart driver in case of failure and abort Sasha Levin
2021-05-24 14:50 ` [PATCH AUTOSEL 4.9 03/19] net: fujitsu: fix potential null-ptr-deref Sasha Levin
2021-05-24 14:50 ` [PATCH AUTOSEL 4.9 04/19] net: caif: remove BUG_ON(dev == NULL) in caif_xmit Sasha Levin
2021-05-24 14:50 ` [PATCH AUTOSEL 4.9 05/19] char: hpet: add checks after calling ioremap Sasha Levin
2021-05-24 14:50 ` [PATCH AUTOSEL 4.9 06/19] ALSA: sb8: Add a comment note regarding an unused pointer Sasha Levin
2021-05-24 14:50 ` [PATCH AUTOSEL 4.9 07/19] isdn: mISDNinfineon: check/cleanup ioremap failure correctly in setup_io Sasha Levin
2021-05-24 14:50 ` [PATCH AUTOSEL 4.9 08/19] ath6kl: return error code in ath6kl_wmi_set_roam_lrssi_cmd() Sasha Levin
2021-05-24 14:50 ` [PATCH AUTOSEL 4.9 09/19] dmaengine: qcom_hidma: comment platform_driver_register call Sasha Levin
2021-05-24 14:50 ` [PATCH AUTOSEL 4.9 10/19] libertas: register sysfs groups properly Sasha Levin
2021-05-24 14:50 ` [PATCH AUTOSEL 4.9 11/19] media: dvb: Add check on sp8870_readreg return Sasha Levin
2021-05-24 14:50 ` [PATCH AUTOSEL 4.9 12/19] media: gspca: mt9m111: Check write_bridge for timeout Sasha Levin
2021-05-24 14:51 ` [PATCH AUTOSEL 4.9 13/19] media: gspca: properly check for errors in po1030_probe() Sasha Levin
2021-05-24 14:51 ` [PATCH AUTOSEL 4.9 14/19] cdrom: gdrom: initialize global variable at init time Sasha Levin
2021-05-24 14:51 ` [PATCH AUTOSEL 4.9 15/19] scsi: BusLogic: Fix 64-bit system enumeration error for Buslogic Sasha Levin
2021-05-24 14:51 ` [PATCH AUTOSEL 4.9 16/19] openrisc: Define memory barrier mb Sasha Levin
2021-05-24 14:51 ` Sasha Levin [this message]
2021-05-24 14:51 ` [PATCH AUTOSEL 4.9 18/19] platform/x86: intel_punit_ipc: Append MODULE_DEVICE_TABLE for ACPI Sasha Levin
2021-05-24 14:51 ` [PATCH AUTOSEL 4.9 19/19] drm/amdgpu: Fix a use-after-free Sasha Levin
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