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linux-stable/drivers/mtd/maps
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Jia-Ju Bai 2a0b390b47 mtd: maps: pcmciamtd: fix possible sleep-in-atomic-context bugs in pcmciamtd_set_vpp() 
The driver may sleep while holding a spinlock.
The function call path (from bottom to top) in Linux 4.19 is:

drivers/pcmcia/pcmcia_resource.c, 312:
	mutex_lock in pcmcia_fixup_vpp
drivers/mtd/maps/pcmciamtd.c, 309:
	pcmcia_fixup_vpp in pcmciamtd_set_vpp
drivers/mtd/maps/pcmciamtd.c, 306:
	_raw_spin_lock_irqsave in pcmciamtd_set_vpp

drivers/pcmcia/pcmcia_resource.c, 312:
	mutex_lock in pcmcia_fixup_vpp
drivers/mtd/maps/pcmciamtd.c, 312:
	pcmcia_fixup_vpp in pcmciamtd_set_vpp
drivers/mtd/maps/pcmciamtd.c, 306:
	_raw_spin_lock_irqsave in pcmciamtd_set_vp

mutex_lock() may sleep at runtime.

To fix these bugs, the spinlock is replaced with a mutex.

These bugs are found by a static analysis tool STCheck written by
myself.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Reviewed-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2020-01-27 16:55:02 +01:00
..
amd76xrom.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
cfi_flagadm.c mtd: constify mtd_partition 2017-11-06 23:26:01 +01:00
ck804xrom.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
dc21285.c mtd: dc21285: use raw spinlock functions for nw_gpio_lock 2015-05-28 12:01:29 -07:00
esb2rom.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
ichxrom.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
impa7.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
intel_vr_nor.c mtd: maps: use mtd_device_register() where applicable 2018-07-18 16:32:36 +02:00
ixp4xx.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
Kconfig mtd: physmap_of: add a hook for Intel IXP4xx flash probing 2019-10-29 14:24:53 +01:00
l440gx.c mtd: maps: l440gx: Avoid printing address to dmesg 2019-10-29 14:24:47 +01:00
lantiq-flash.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
Makefile mtd: physmap_of: add a hook for Intel IXP4xx flash probing 2019-10-29 14:24:53 +01:00
map_funcs.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
netsc520.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
nettel.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
pci.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
pcmciamtd.c mtd: maps: pcmciamtd: fix possible sleep-in-atomic-context bugs in pcmciamtd_set_vpp() 2020-01-27 16:55:02 +01:00
physmap-core.c mtd: physmap_of: add a hook for Intel IXP4xx flash probing 2019-10-29 14:24:53 +01:00
physmap-gemini.c mtd: physmap_of_gemini: remove extranous __xipram annotation 2019-05-06 21:46:44 +02:00
physmap-gemini.h mtd: maps: Rename physmap_of_{versatile, gemini} into physmap-{versatile, gemini} 2018-11-05 22:24:29 +01:00
physmap-ixp4xx.c mtd: physmap_of: add a hook for Intel IXP4xx flash probing 2019-10-29 14:24:53 +01:00
physmap-ixp4xx.h mtd: physmap_of: add a hook for Intel IXP4xx flash probing 2019-10-29 14:24:53 +01:00
physmap-versatile.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
physmap-versatile.h mtd: maps: Rename physmap_of_{versatile, gemini} into physmap-{versatile, gemini} 2018-11-05 22:24:29 +01:00
pismo.c mtd: pismo: Simplify getting the adapter of a client 2019-09-15 23:50:39 +02:00
plat-ram.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
pmcmsp-flash.c mtd: pmcmsp: use kstrndup instead of kmalloc+strncpy 2017-02-08 13:15:49 -08:00
pxa2xx-flash.c mtd: pxa2xx: Use ioremap_cache insted of ioremap_cached 2019-09-15 23:50:22 +02:00
rbtx4939-flash.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
sa1100-flash.c mtd: sa1100: Mark expected switch fall-through 2019-08-20 19:43:15 -05:00
sbc_gxx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
sc520cdp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
scb2_flash.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
scx200_docflash.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
solutionengine.c mtd/maps: fix solutionengine.c printk format warnings 2018-07-24 22:43:10 +02:00
sun_uflash.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
ts5500_flash.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
tsunami_flash.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
uclinux.c mtd: maps: Make uclinux_ram_map static 2019-05-06 21:47:01 +02:00
vmu-flash.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 467 2019-06-19 17:09:10 +02:00