[linus:master] [exfat] 82a81a7352: invoked_oom-killer:gfp_mask=0x

Hello,

this report is just FYI.

seems 82a81a7352 causes more memory footprint in our ltp tests on a 16G memory
Skylake desktop machine.

parent can always pass without the issues.



kernel test robot noticed "invoked_oom-killer:gfp_mask=0x" on:

commit: 82a81a7352bcf5f2756ac33d47ee0582737e9a85 ("exfat: add iomap buffered I/O support")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

[test failed on linus/master      2c7c88a412aa6d09cd04b414211b4ef8553b5309]
[test failed on linux-next/master 34cf6dafc47441dfb6b356a095b89c3585a93714]
[test failed on fix commit        5362e7aedd113bb8b042e47e385103fe98274764]

in testcase: ltp
version: 
with following parameters:

	disk: 1SSD
	fs: f2fs
	test: syscalls-06



config: x86_64-rhel-9.4-ltp
compiler: gcc-14
test machine: 8 threads Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz (Skylake) with 16G memory

(please refer to attached dmesg/kmsg for entire log/backtrace)



If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-lkp/202607101054.8da4ec23-lkp-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org



[  430.386383][T10010] BTRFS info (device loop0): last unmount of filesystem 5e76d402-936a-4bbd-a5ab-c986cca03967
[  430.422556][T10105] Adding 1020k swap on mntpoint/swapfile01.  Priority:-1 extents:1 across:1020k SS
[  431.662145][T10105] Adding 131068k swap on mntpoint/swapfile01.  Priority:-1 extents:1 across:131068k SS
[  432.662740][T10115] swapon: swapfile has holes
[  432.678788][T10115] swapon: swapfile has holes
[  432.769811][T10115] swapon01 invoked oom-killer: gfp_mask=0xcc0(GFP_KERNEL), order=0, oom_score_adj=0
[  432.770508][T10115] CPU: 3 UID: 0 PID: 10115 Comm: swapon01 Tainted: G           OE       7.1.0+ #1 PREEMPT(lazy)
[  432.770513][T10115] Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
[  432.770515][T10115] Hardware name: System manufacturer System Product Name/Z170I PRO GAMING, BIOS 3805 05/16/2018
[  432.770529][T10115] Call Trace:
[  432.770531][T10115]  <TASK>
[  432.770533][T10115]  dump_stack_lvl (kbuild/src/lib/dump_stack.c:94 kbuild/src/lib/dump_stack.c:120)
[  432.770539][T10115]  dump_header (kbuild/src/mm/oom_kill.c:464)
[  432.770542][T10115]  oom_kill_process.cold (kbuild/src/mm/oom_kill.c:1031)
[  432.770545][T10115]  out_of_memory (kbuild/src/mm/oom_kill.c:1169 (discriminator 4))


The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260710/202607101054.8da4ec23-lkp-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org



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