On Thu, Apr 28, 2022 at 08:39:06AM -0400, Zi Yan wrote:
> How about the one attached? I can apply it to next-20220428. Let me know
> if you are using a different branch. Thanks.
The original endless loop is gone, but running some syscall fuzzer
afterwards for a while would trigger the warning here. I have yet to
figure out if this is related to this series.
/*
* There are several places where we assume that the order value is sane
* so bail out early if the request is out of bound.
*/
if (unlikely(order >= MAX_ORDER)) {
WARN_ON_ONCE(!(gfp & __GFP_NOWARN));
return NULL;
}
WARNING: CPU: 26 PID: 172874 at mm/page_alloc.c:5368 __alloc_pages
CPU: 26 PID: 172874 Comm: trinity-main Not tainted 5.18.0-rc4-next-20220428-dirty #67
pstate: 20400009 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
tpidr_el2 : ffff28cf80a61000
pc : __alloc_pages
lr : alloc_pages
sp : ffff8000597b70f0
x29: ffff8000597b70f0 x28: ffff0801e68d34c0 x27: 0000000000000000
x26: 1ffff0000b2f6ea2 x25: ffff8000597b7510 x24: 0000000000000dc0
x23: ffff28cf80a61000 x22: 000000000000000e x21: 1ffff0000b2f6e28
x20: 0000000000040dc0 x19: ffffdf670d4a6fe0 x18: ffffdf66fa017d1c
x17: ffffdf66f42f8348 x16: 1fffe1003cd1a7b3 x15: 000000000000001a
x14: 1fffe1003cd1a7a6 x13: 0000000000000004 x12: ffff70000b2f6e05
x11: 1ffff0000b2f6e04 x10: 00000000f204f1f1 x9 : 000000000000f204
x8 : dfff800000000000 x7 : 00000000f3000000 x6 : 00000000f3f3f3f3
x5 : ffff70000b2f6e28 x4 : ffff0801e68d34c0 x3 : 0000000000000000
x2 : 0000000000000000 x1 : 0000000000000001 x0 : 0000000000040dc0
Call trace:
__alloc_pages
alloc_pages
kmalloc_order
kmalloc_order_trace
__kmalloc
__regset_get
regset_get_alloc
fill_thread_core_info
fill_note_info
elf_core_dump
do_coredump
get_signal
do_signal
do_notify_resume
el0_svc
el0t_64_sync_handler
el0t_64_sync
irq event stamp: 3614
hardirqs last enabled at (3613): _raw_spin_unlock_irqrestore
hardirqs last disabled at (3614): el1_dbg
softirqs last enabled at (2988): fpsimd_preserve_current_state
softirqs last disabled at (2986): fpsimd_preserve_current_state
