From: Matt Fleming <matt@readmodwrite.com>
To: willy@infradead.org
Cc: adilger.kernel@dilger.ca, akpm@linux-foundation.org,
linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
luka.2016.cs@gmail.com, tytso@mit.edu,
Barry Song <baohua@kernel.org>,
kernel-team@cloudflare.com, Vlastimil Babka <vbabka@suse.cz>,
Miklos Szeredi <miklos@szeredi.hu>,
Amir Goldstein <amir73il@gmail.com>
Subject: Re: Potential Linux Crash: WARNING in ext4_dirty_folio in Linux kernel v6.13-rc5
Date: Wed, 26 Mar 2025 10:59:14 +0000 [thread overview]
Message-ID: <20250326105914.3803197-1-matt@readmodwrite.com> (raw)
In-Reply-To: <Z8kvDz70Wjh5By7c@casper.infradead.org>
On Thu, Mar 06, 2025 at 05:13:51 +0000, Matthew wrote:
> This is the exact same problem I just analysed for you. Except this
> time it's ext4 rather than FAT.
>
> https://lore.kernel.org/linux-mm/Z8kuWyqj8cS-stKA@casper.infradead.org/
> for the benefit of the ext4 people who're just finding out about this.
Hi there,
I'm also seeing this PF_MEMALLOC WARN triggered from kswapd in 6.12.19.
Does overlayfs need some kind of background inode reclaim support?
Call Trace:
<TASK>
__alloc_pages_noprof+0x31c/0x330
alloc_pages_mpol_noprof+0xe3/0x1d0
folio_alloc_noprof+0x5b/0xa0
__filemap_get_folio+0x1f3/0x380
__getblk_slow+0xa3/0x1e0
__ext4_get_inode_loc+0x121/0x4b0
ext4_get_inode_loc+0x40/0xa0
ext4_reserve_inode_write+0x39/0xc0
__ext4_mark_inode_dirty+0x5b/0x220
ext4_evict_inode+0x26d/0x690
evict+0x112/0x2a0
__dentry_kill+0x71/0x180
dput+0xeb/0x1b0
ovl_stack_put+0x2e/0x50 [overlay]
ovl_destroy_inode+0x3a/0x60 [overlay]
destroy_inode+0x3b/0x70
__dentry_kill+0x71/0x180
shrink_dentry_list+0x6b/0xe0
prune_dcache_sb+0x56/0x80
super_cache_scan+0x12c/0x1e0
do_shrink_slab+0x13b/0x350
shrink_slab+0x278/0x3a0
shrink_node+0x328/0x880
balance_pgdat+0x36d/0x740
kswapd+0x1f0/0x380
kthread+0xd2/0x100
ret_from_fork+0x34/0x50
ret_from_fork_asm+0x1a/0x30
</TASK>
Thanks,
Matt
next prev parent reply other threads:[~2025-03-26 10:59 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-06 2:42 Luka
2025-03-06 5:13 ` Matthew Wilcox
2025-03-26 10:59 ` Matt Fleming [this message]
2025-04-03 12:29 ` Matt Fleming
2025-04-03 12:58 ` Vlastimil Babka
2025-04-03 14:33 ` Michal Hocko
2025-04-03 17:12 ` Matthew Wilcox
2025-04-03 19:32 ` James Bottomley
2025-04-04 9:09 ` Vlastimil Babka
2025-04-04 13:50 ` Matthew Wilcox
2025-04-07 23:00 ` Dave Chinner
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