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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Jaegeuk Kim <jaegeuk@kernel.org>,
	Zhiguo Niu <Zhiguo.Niu@unisoc.com>,
	Sasha Levin <sashal@kernel.org>,
	linux-f2fs-devel@lists.sourceforge.net
Subject: [PATCH AUTOSEL 5.8 08/27] f2fs: should avoid inode eviction in synchronous path
Date: Wed, 19 Aug 2020 20:00:57 -0400	[thread overview]
Message-ID: <20200820000116.214821-8-sashal@kernel.org> (raw)
In-Reply-To: <20200820000116.214821-1-sashal@kernel.org>

From: Jaegeuk Kim <jaegeuk@kernel.org>

[ Upstream commit b0f3b87fb3abc42c81d76c6c5795f26dbdb2f04b ]

https://bugzilla.kernel.org/show_bug.cgi?id=208565

PID: 257    TASK: ecdd0000  CPU: 0   COMMAND: "init"
  #0 [<c0b420ec>] (__schedule) from [<c0b423c8>]
  #1 [<c0b423c8>] (schedule) from [<c0b459d4>]
  #2 [<c0b459d4>] (rwsem_down_read_failed) from [<c0b44fa0>]
  #3 [<c0b44fa0>] (down_read) from [<c044233c>]
  #4 [<c044233c>] (f2fs_truncate_blocks) from [<c0442890>]
  #5 [<c0442890>] (f2fs_truncate) from [<c044d408>]
  #6 [<c044d408>] (f2fs_evict_inode) from [<c030be18>]
  #7 [<c030be18>] (evict) from [<c030a558>]
  #8 [<c030a558>] (iput) from [<c047c600>]
  #9 [<c047c600>] (f2fs_sync_node_pages) from [<c0465414>]
 #10 [<c0465414>] (f2fs_write_checkpoint) from [<c04575f4>]
 #11 [<c04575f4>] (f2fs_sync_fs) from [<c0441918>]
 #12 [<c0441918>] (f2fs_do_sync_file) from [<c0441098>]
 #13 [<c0441098>] (f2fs_sync_file) from [<c0323fa0>]
 #14 [<c0323fa0>] (vfs_fsync_range) from [<c0324294>]
 #15 [<c0324294>] (do_fsync) from [<c0324014>]
 #16 [<c0324014>] (sys_fsync) from [<c0108bc0>]

This can be caused by flush_dirty_inode() in f2fs_sync_node_pages() where
iput() requires f2fs_lock_op() again resulting in livelock.

Reported-by: Zhiguo Niu <Zhiguo.Niu@unisoc.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/f2fs/node.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 03e24df1c84f5..e61ce7fb0958b 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1924,8 +1924,12 @@ int f2fs_sync_node_pages(struct f2fs_sb_info *sbi,
 				goto continue_unlock;
 			}
 
-			/* flush inline_data, if it's async context. */
-			if (do_balance && is_inline_node(page)) {
+			/* flush inline_data/inode, if it's async context. */
+			if (!do_balance)
+				goto write_node;
+
+			/* flush inline_data */
+			if (is_inline_node(page)) {
 				clear_inline_node(page);
 				unlock_page(page);
 				flush_inline_data(sbi, ino_of_node(page));
@@ -1938,7 +1942,7 @@ int f2fs_sync_node_pages(struct f2fs_sb_info *sbi,
 				if (flush_dirty_inode(page))
 					goto lock_node;
 			}
-
+write_node:
 			f2fs_wait_on_page_writeback(page, NODE, true, true);
 
 			if (!clear_page_dirty_for_io(page))
-- 
2.25.1


  parent reply	other threads:[~2020-08-20  0:12 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-20  0:00 [PATCH AUTOSEL 5.8 01/27] scsi: ufs: Add DELAY_BEFORE_LPM quirk for Micron devices Sasha Levin
2020-08-20  0:00 ` [PATCH AUTOSEL 5.8 02/27] scsi: target: tcmu: Fix crash in tcmu_flush_dcache_range on ARM Sasha Levin
2020-08-20  0:00 ` [PATCH AUTOSEL 5.8 03/27] media: budget-core: Improve exception handling in budget_register() Sasha Levin
2020-08-20  0:00 ` [PATCH AUTOSEL 5.8 04/27] media: coda: jpeg: add NULL check after kmalloc Sasha Levin
2020-08-20  0:00 ` [PATCH AUTOSEL 5.8 05/27] f2fs: fix to check page dirty status before writeback Sasha Levin
2020-08-20  0:00 ` [PATCH AUTOSEL 5.8 06/27] rtc: goldfish: Enable interrupt in set_alarm() when necessary Sasha Levin
2020-08-20  0:00 ` [PATCH AUTOSEL 5.8 07/27] media: vpss: clean up resources in init Sasha Levin
2020-08-20  0:00 ` Sasha Levin [this message]
2020-08-20  0:00 ` [PATCH AUTOSEL 5.8 09/27] Input: psmouse - add a newline when printing 'proto' by sysfs Sasha Levin
2020-08-20  0:00 ` [PATCH AUTOSEL 5.8 10/27] MIPS: Fix unable to reserve memory for Crash kernel Sasha Levin
2020-08-20  0:01 ` [PATCH AUTOSEL 5.8 11/27] m68knommu: fix overwriting of bits in ColdFire V3 cache control Sasha Levin
2020-08-20  0:01 ` [PATCH AUTOSEL 5.8 12/27] svcrdma: Fix another Receive buffer leak Sasha Levin
2020-08-20  0:01 ` [PATCH AUTOSEL 5.8 13/27] xfs: fix inode quota reservation checks Sasha Levin
2020-08-20  0:01 ` [PATCH AUTOSEL 5.8 14/27] drm/ttm: fix offset in VMAs with a pg_offs in ttm_bo_vm_access Sasha Levin
2020-08-20  0:01 ` [PATCH AUTOSEL 5.8 15/27] riscv: Fixup static_obj() fail Sasha Levin
2020-08-20  0:01 ` [PATCH AUTOSEL 5.8 16/27] jffs2: fix UAF problem Sasha Levin
2020-08-20  0:01 ` [PATCH AUTOSEL 5.8 17/27] ceph: fix use-after-free for fsc->mdsc Sasha Levin
2020-08-20  0:01 ` [PATCH AUTOSEL 5.8 18/27] swiotlb-xen: use vmalloc_to_page on vmalloc virt addresses Sasha Levin
2020-08-20  0:01 ` [PATCH AUTOSEL 5.8 19/27] cpufreq: intel_pstate: Fix cpuinfo_max_freq when MSR_TURBO_RATIO_LIMIT is 0 Sasha Levin
2020-08-20  0:01 ` [PATCH AUTOSEL 5.8 20/27] scsi: libfc: Free skb in fc_disc_gpn_id_resp() for valid cases Sasha Levin
2020-08-20  0:01 ` [PATCH AUTOSEL 5.8 21/27] virtio_ring: Avoid loop when vq is broken in virtqueue_poll Sasha Levin
2020-08-20  0:01 ` [PATCH AUTOSEL 5.8 22/27] media: camss: fix memory leaks on error handling paths in probe Sasha Levin
2020-08-20  0:01 ` [PATCH AUTOSEL 5.8 23/27] tools/testing/selftests/cgroup/cgroup_util.c: cg_read_strcmp: fix null pointer dereference Sasha Levin
2020-08-20  0:01 ` [PATCH AUTOSEL 5.8 24/27] xfs: Fix UBSAN null-ptr-deref in xfs_sysfs_init Sasha Levin
2020-08-20  0:01 ` [PATCH AUTOSEL 5.8 25/27] alpha: fix annotation of io{read,write}{16,32}be() Sasha Levin
2020-08-20  0:01 ` [PATCH AUTOSEL 5.8 26/27] fat: fix fat_ra_init() for data clusters == 0 Sasha Levin
2020-08-20  0:01 ` [PATCH AUTOSEL 5.8 27/27] fs/signalfd.c: fix inconsistent return codes for signalfd4 Sasha Levin

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