linux_dsm_epyc7002/drivers/input
Miles Chen 7f439bc2d7 Input: evdev - convert kzalloc()/vzalloc() to kvzalloc()
We observed a large(order-3) allocation in evdev_open() and it may
cause an OOM kernel panic in kzalloc(), before we getting to the
vzalloc() fallback.

Fix it by converting kzalloc()/vzalloc() to kvzalloc() to avoid the
OOM killer logic as we have a vmalloc fallback.

InputReader invoked oom-killer: gfp_mask=0x240c2c0
(GFP_KERNEL|__GFP_NOWARN|__GFP_COMP|__GFP_ZERO), nodemask=0, order=3,
oom_score_adj=-900
...
(dump_backtrace) from (show_stack+0x18/0x1c)
(show_stack) from (dump_stack+0x94/0xa8)
(dump_stack) from (dump_header+0x7c/0xe4)
(dump_header) from (out_of_memory+0x334/0x348)
(out_of_memory) from (__alloc_pages_nodemask+0xe9c/0xeb8)
(__alloc_pages_nodemask) from (kmalloc_order_trace+0x34/0x128)
(kmalloc_order_trace) from (__kmalloc+0x258/0x36c)
(__kmalloc) from (evdev_open+0x5c/0x17c)
(evdev_open) from (chrdev_open+0x100/0x204)
(chrdev_open) from (do_dentry_open+0x21c/0x354)
(do_dentry_open) from (vfs_open+0x58/0x84)
(vfs_open) from (path_openat+0x640/0xc98)
(path_openat) from (do_filp_open+0x78/0x11c)
(do_filp_open) from (do_sys_open+0x130/0x244)
(do_sys_open) from (SyS_openat+0x14/0x18)
(SyS_openat) from (__sys_trace_return+0x0/0x10)
...
Normal: 12488*4kB (UMEH) 6984*8kB (UMEH) 2101*16kB (UMEH) 0*32kB
0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 139440kB
HighMem: 206*4kB (H) 131*8kB (H) 42*16kB (H) 2*32kB (H) 0*64kB
0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 2608kB
...
Kernel panic - not syncing: Out of memory and no killable processes...

Signed-off-by: Miles Chen <miles.chen@mediatek.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2020-01-10 14:42:52 -08:00
..
gameport treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
joystick Input: psxpad-spi - switch to using polled mode of input devices 2019-10-29 17:13:36 -07:00
keyboard Input: imx_sc_key - only take the valid data from SCU firmware as key state 2019-12-13 16:41:57 -08:00
misc Input: input_event - fix struct padding on sparc64 2019-12-13 15:00:36 -08:00
mouse Input: synaptics - switch another X1 Carbon 6 to RMI/SMbus 2019-11-22 16:21:51 -08:00
rmi4 Merge branch 'next' into for-linus 2019-12-06 11:14:23 -08:00
serio Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2019-09-19 14:10:54 -07:00
tablet Input: fix Kconfig indentation 2019-11-22 15:19:19 -08:00
touchscreen Merge branch 'next' into for-linus 2019-12-06 11:14:23 -08:00
apm-power.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
evbug.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
evdev.c Input: evdev - convert kzalloc()/vzalloc() to kvzalloc() 2020-01-10 14:42:52 -08:00
ff-core.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
ff-memless.c Input: ff-memless - kill timer in destroy() 2019-11-15 11:45:03 -08:00
input-compat.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
input-compat.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
input-leds.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
input-mt.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
input-polldev.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
input-poller.c Input: add input_get_poll_interval() 2019-10-04 12:31:46 -07:00
input-poller.h Input: add support for polling to input devices 2019-08-20 12:04:07 -07:00
input.c Input: add safety guards to input_set_keycode() 2019-12-13 15:00:42 -08:00
joydev.c Linux 5.2 2019-07-15 09:42:32 -07:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile Input: add support for polling to input devices 2019-08-20 12:04:07 -07:00
matrix-keymap.c Input: matrix-keymap - switch to use device_property_count_u32() 2019-08-12 00:03:13 -07:00
mousedev.c *: convert stream-like files -> stream_open, even if they use noop_llseek 2019-07-14 16:09:19 +03:00
sparse-keymap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00