Re: [PATCH AUTOSEL 5.11 03/44] ext4: add reclaim checks to xattr code

2021-03-30 Thread Sasha Levin
On Thu, Mar 25, 2021 at 03:30:20PM +0100, Jan Kara wrote: Sasha, just be aware that this commit was added to help tracking down a particular syzbot report. As such there's no point in carrying it in -stable but there's no big harm either... Just one patch more. Yup, I'd rather keep it to see

Re: [PATCH AUTOSEL 5.11 03/44] ext4: add reclaim checks to xattr code

2021-03-25 Thread Jan Kara
Sasha, just be aware that this commit was added to help tracking down a particular syzbot report. As such there's no point in carrying it in -stable but there's no big harm either... Just one patch more. Honza On Thu 25-03-21

[PATCH AUTOSEL 5.11 03/44] ext4: add reclaim checks to xattr code

2021-03-25 Thread Sasha Levin
From: Jan Kara [ Upstream commit 163f0ec1df33cf468509ff38cbcbb5eb0d7fac60 ] Syzbot is reporting that ext4 can enter fs reclaim from kvmalloc() while the transaction is started like: fs_reclaim_acquire+0x117/0x150 mm/page_alloc.c:4340 might_alloc include/linux/sched/mm.h:193 [inline]