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* [PATCH AUTOSEL 6.7 01/44] ext4: avoid dividing by 0 in mb_update_avg_fragment_size() when block bitmap corrupt
@ 2024-02-07 21:20 Sasha Levin
  2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 02/44] ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found() Sasha Levin
                   ` (42 more replies)
  0 siblings, 43 replies; 46+ messages in thread
From: Sasha Levin @ 2024-02-07 21:20 UTC (permalink / raw)
  To: linux-kernel, stable
  Cc: Baokun Li, Jan Kara, Theodore Ts'o, Sasha Levin,
	adilger.kernel, linux-ext4

From: Baokun Li <libaokun1@huawei.com>

[ Upstream commit 993bf0f4c393b3667830918f9247438a8f6fdb5b ]

Determine if bb_fragments is 0 instead of determining bb_free to eliminate
the risk of dividing by zero when the block bitmap is corrupted.

Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20240104142040.2835097-6-libaokun1@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/ext4/mballoc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index ab023d709f72..a85017a78fc8 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -842,7 +842,7 @@ mb_update_avg_fragment_size(struct super_block *sb, struct ext4_group_info *grp)
 	struct ext4_sb_info *sbi = EXT4_SB(sb);
 	int new_order;
 
-	if (!test_opt2(sb, MB_OPTIMIZE_SCAN) || grp->bb_free == 0)
+	if (!test_opt2(sb, MB_OPTIMIZE_SCAN) || grp->bb_fragments == 0)
 		return;
 
 	new_order = mb_avg_fragment_size_order(sb,
-- 
2.43.0


^ permalink raw reply related	[flat|nested] 46+ messages in thread

end of thread, other threads:[~2024-02-22 12:29 UTC | newest]

Thread overview: 46+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2024-02-07 21:20 [PATCH AUTOSEL 6.7 01/44] ext4: avoid dividing by 0 in mb_update_avg_fragment_size() when block bitmap corrupt Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 02/44] ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found() Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 03/44] ext4: avoid allocating blocks from corrupted group in ext4_mb_find_by_goal() Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 04/44] Input: goodix - accept ACPI resources with gpio_count == 3 && gpio_int_idx == 0 Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 05/44] dmaengine: ti: edma: Add some null pointer checks to the edma_probe Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 06/44] ASoC: amd: acp: Add check for cpu dai link initialization Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 07/44] ASoC: codecs: wcd934x: drop unneeded regulator include Sasha Levin
2024-02-08 11:37   ` Mark Brown
2024-02-22 12:29     ` Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 08/44] regulator: pwm-regulator: Add validity checks in continuous .get_voltage Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 09/44] HID: logitech-hidpp: add support for Logitech G Pro X Superlight 2 Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 10/44] ALSA: hda: Replace numeric device IDs with constant values Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 11/44] ALSA: hda: Increase default bdl_pos_adj for Apollo Lake Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 12/44] HID: nvidia-shield: Add missing null pointer checks to LED initialization Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 13/44] nvmet-tcp: fix nvme tcp ida memory leak Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 14/44] usb: ucsi_acpi: Quirk to ack a connector change ack cmd Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 15/44] ALSA: usb-audio: Check presence of valid altsetting control Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 16/44] ASoC: sunxi: sun4i-spdif: Add support for Allwinner H616 Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 17/44] ALSA: hda: cs35l41: Support additional ASUS Zenbook UX3402VA Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 18/44] ALSA: hda: cs35l41: Support ASUS Zenbook UM3402YAR Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 19/44] regulator (max5970): Fix IRQ handler Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 20/44] spi: sh-msiof: avoid integer overflow in constants Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 21/44] Input: xpad - add Lenovo Legion Go controllers Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 22/44] misc: open-dice: Fix spurious lockdep warning Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 23/44] netfilter: conntrack: check SCTP_CID_SHUTDOWN_ACK for vtag setting in sctp_new Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 24/44] drm/amdkfd: Use correct drm device for cgroup permission check Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 25/44] drm/amd/display: increased min_dcfclk_mhz and min_fclk_mhz Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 26/44] drm/amd/display: fix USB-C flag update after enc10 feature init Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 27/44] drm/amd/display: Fix DPSTREAM CLK on and off sequence Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 28/44] cifs: make sure that channel scaling is done only once Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 29/44] ASoC: wm_adsp: Don't overwrite fwf_name with the default Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 30/44] ALSA: usb-audio: Ignore clock selector errors for single connection Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 31/44] nvme-fc: do not wait in vain when unloading module Sasha Levin
2024-02-07 21:20 ` [PATCH AUTOSEL 6.7 32/44] nvmet-fcloop: swap the list_add_tail arguments Sasha Levin
2024-02-07 21:21 ` [PATCH AUTOSEL 6.7 33/44] nvmet-fc: release reference on target port Sasha Levin
2024-02-07 21:21 ` [PATCH AUTOSEL 6.7 34/44] nvmet-fc: defer cleanup using RCU properly Sasha Levin
2024-02-07 21:21 ` [PATCH AUTOSEL 6.7 35/44] nvmet-fc: free queue and assoc directly Sasha Levin
2024-02-07 21:21 ` [PATCH AUTOSEL 6.7 36/44] nvmet-fc: hold reference on hostport match Sasha Levin
2024-02-07 21:21 ` [PATCH AUTOSEL 6.7 37/44] nvmet-fc: do not tack refs on tgtports from assoc Sasha Levin
2024-02-07 21:21 ` [PATCH AUTOSEL 6.7 38/44] nvmet-fc: abort command when there is no binding Sasha Levin
2024-02-07 21:21 ` [PATCH AUTOSEL 6.7 39/44] nvmet-fc: avoid deadlock on delete association path Sasha Levin
2024-02-07 21:21 ` [PATCH AUTOSEL 6.7 40/44] nvmet-fc: take ref count on tgtport before delete assoc Sasha Levin
2024-02-07 21:21 ` [PATCH AUTOSEL 6.7 41/44] cifs: do not search for channel if server is terminating Sasha Levin
2024-02-07 21:21 ` [PATCH AUTOSEL 6.7 42/44] smb: client: increase number of PDUs allowed in a compound request Sasha Levin
2024-02-07 21:21 ` [PATCH AUTOSEL 6.7 43/44] ext4: correct the hole length returned by ext4_map_blocks() Sasha Levin
2024-02-07 21:21 ` [PATCH AUTOSEL 6.7 44/44] Input: i8042 - add Fujitsu Lifebook U728 to i8042 quirk table Sasha Levin

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