ext4: avoid deadlock in fs reclaim with page writeback
In the Linux kernel, the following vulnerability has been resolved:
fuse: fix runtime warning on truncatefoliobatchexceptionals()
The WARNONONCE is introduced on truncatefoliobatchexceptionals() to capture whether the filesystem has removed all DAX entries or not.
And the fix has been applied on the filesystem xfs and ext4 by the commit 0e2f80afcfa6 ("fs/dax: ensure all pages are idle prior to filesystem unmount").
Apply the missed fix on filesystem fuse to fix the runtime warning:
[ 2.011450] ------------[ cut here ]------------ [ 2.011873] WARNING: CPU: 0 PID: 145 at mm/truncate.c:89 truncatefoliobatchexceptionals+0x272/0x2b0 [ 2.012468] Modules linked in: [ 2.012718] CPU: 0 UID: 1000 PID: 145 Comm: weston Not tainted 6.16.0-rc2-WSL2-STABLE #2 PREEMPT(undef) [ 2.013292] RIP: 0010:truncatefoliobatchexceptionals+0x272/0x2b0 [ 2.013704] Code: 48 63 d0 41 29 c5 48 8d 1c d5 00 00 00 00 4e 8d 6c 2a 01 49 c1 e5 03 eb 09 48 83 c3 08 49 39 dd 74 83 41 f6 44 1c 08 01 74 ef <0f> 0b 49 8b 34 1e 48 89 ef e8 10 a2 17 00 eb df 48 8b 7d 00 e8 35 [ 2.014845] RSP: 0018:ffffa47ec33f3b10 EFLAGS: 00010202 [ 2.015279] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 2.015884] RDX: 0000000000000000 RSI: ffffa47ec33f3ca0 RDI: ffff98aa44f3fa80 [ 2.016377] RBP: ffff98aa44f3fbf0 R08: ffffa47ec33f3ba8 R09: 0000000000000000 [ 2.016942] R10: 0000000000000001 R11: 0000000000000000 R12: ffffa47ec33f3ca0 [ 2.017437] R13: 0000000000000008 R14: ffffa47ec33f3ba8 R15: 0000000000000000 [ 2.017972] FS: 000079ce006afa40(0000) GS:ffff98aade441000(0000) knlGS:0000000000000000 [ 2.018510] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.018987] CR2: 000079ce03e74000 CR3: 000000010784f006 CR4: 0000000000372eb0 [ 2.019518] Call Trace: [ 2.019729] <TASK> [ 2.019901] truncateinodepagesrange+0xd8/0x400 [ 2.020280] ? timerqueueadd+0x66/0xb0 [ 2.020574] ? getnohztimertarget+0x2a/0x140 [ 2.020904] ? timerqueueadd+0x66/0xb0 [ 2.021231] ? timerqueuedel+0x2e/0x50 [ 2.021646] ? removehrtimer+0x39/0x90 [ 2.022017] ? srsoaliasuntrainret+0x1/0x10 [ 2.022497] ? psigroupchange+0x136/0x350 [ 2.023046] ? rawspinunlock+0xe/0x30 [ 2.023514] ? finishtaskswitch.isra.0+0x8d/0x280 [ 2.024068] ? schedule+0x532/0xbd0 [ 2.024551] fuseevictinode+0x29/0x190 [ 2.025131] evict+0x100/0x270 [ 2.025641] ? atomicdecandlock+0x39/0x50 [ 2.026316] ? pfxgenericdeleteinode+0x10/0x10 [ 2.026843] dentrykill+0x71/0x180 [ 2.027335] dput+0xeb/0x1b0 [ 2.027725] fput+0x136/0x2b0 [ 2.028054] x64sysclose+0x3d/0x80 [ 2.028469] dosyscall64+0x6d/0x1b0 [ 2.028832] ? clearbhbloop+0x30/0x80 [ 2.029182] ? clearbhbloop+0x30/0x80 [ 2.029533] ? clearbhbloop+0x30/0x80 [ 2.029902] entrySYSCALL64afterhwframe+0x76/0x7e [ 2.030423] RIP: 0033:0x79ce03d0d067 [ 2.030820] Code: b8 ff ff ff ff e9 3e ff ff ff 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 41 c3 48 83 ec 18 89 7c 24 0c e8 c3 a7 f8 ff [ 2.032354] RSP: 002b:00007ffef0498948 EFLAGS: 00000246 ORIGRAX: 0000000000000003 [ 2.032939] RAX: ffffffffffffffda RBX: 00007ffef0498960 RCX: 000079ce03d0d067 [ 2.033612] RDX: 0000000000000003 RSI: 0000000000001000 RDI: 000000000000000d [ 2.034289] RBP: 00007ffef0498a30 R08: 000000000000000d R09: 0000000000000000 [ 2.034944] R10: 00007ffef0498978 R11: 0000000000000246 R12: 0000000000000001 [ 2.035610] R13: 00007ffef0498960 R14: 000079ce03e09ce0 R15: 0000000000000003 [ 2.036301] </TASK> [ 2.036532] ---[ end trace 0000000000000000 ]---
In the Linux kernel, the following vulnerability has been resolved:
ext4: filesystems without casefold feature cannot be mounted with siphash
When mounting the ext4 filesystem, if the default hash version is set to DXHASHSIPHASH but the casefold feature is not set, exit the mounting.