THREATINT

We use these services and cookies to improve your user experience. You may opt out if you wish, however, this may limit some features on this site.

Please see our statement on Data Privacy.

Zendesk (Helpdesk and Chat)

Ok

PUBLISHED

CVE-2024-36882

mm: use memalloc_nofs_save() in page_cache_ra_order()

Reserved:2024-05-30
Published:2024-05-30
Updated:2024-06-06

Description

In the Linux kernel, the following vulnerability has been resolved: mm: use memalloc_nofs_save() in page_cache_ra_order() See commit f2c817bed58d ("mm: use memalloc_nofs_save in readahead path"), ensure that page_cache_ra_order() do not attempt to reclaim file-backed pages too, or it leads to a deadlock, found issue when test ext4 large folio. INFO: task DataXceiver for:7494 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:DataXceiver for state:D stack:0 pid:7494 ppid:1 flags:0x00000200 Call trace: __switch_to+0x14c/0x240 __schedule+0x82c/0xdd0 schedule+0x58/0xf0 io_schedule+0x24/0xa0 __folio_lock+0x130/0x300 migrate_pages_batch+0x378/0x918 migrate_pages+0x350/0x700 compact_zone+0x63c/0xb38 compact_zone_order+0xc0/0x118 try_to_compact_pages+0xb0/0x280 __alloc_pages_direct_compact+0x98/0x248 __alloc_pages+0x510/0x1110 alloc_pages+0x9c/0x130 folio_alloc+0x20/0x78 filemap_alloc_folio+0x8c/0x1b0 page_cache_ra_order+0x174/0x308 ondemand_readahead+0x1c8/0x2b8 page_cache_async_ra+0x68/0xb8 filemap_readahead.isra.0+0x64/0xa8 filemap_get_pages+0x3fc/0x5b0 filemap_splice_read+0xf4/0x280 ext4_file_splice_read+0x2c/0x48 [ext4] vfs_splice_read.part.0+0xa8/0x118 splice_direct_to_actor+0xbc/0x288 do_splice_direct+0x9c/0x108 do_sendfile+0x328/0x468 __arm64_sys_sendfile64+0x8c/0x148 invoke_syscall+0x4c/0x118 el0_svc_common.constprop.0+0xc8/0xf0 do_el0_svc+0x24/0x38 el0_svc+0x4c/0x1f8 el0t_64_sync_handler+0xc0/0xc8 el0t_64_sync+0x188/0x190

Product status

Default status
unaffected

793917d997df before 7629ef6dda15
affected

793917d997df before 468971c3f4b8
affected

793917d997df before cf6a1d16c6df
affected

793917d997df before 30153e446664
affected

Default status
affected

5.18
affected

Any version before 5.18
unaffected

6.1.91
unaffected

6.6.31
unaffected

6.8.10
unaffected

6.9
unaffected

References

https://git.kernel.org/stable/c/7629ef6dda1564098aadeef38e5fbd11ee8627c4

https://git.kernel.org/stable/c/468971c3f4b8187f25334503b68050a0e1370147

https://git.kernel.org/stable/c/cf6a1d16c6df3c30b03f0c6a92a2ba7f86dffb45

https://git.kernel.org/stable/c/30153e4466647a17eebfced13eede5cbe4290e69

cve.org CVE-2024-36882

nvd.nist.gov CVE-2024-36882

Download JSON

Share this page
https://cve.threatint.com/CVE/CVE-2024-36882