Herbert Xu aa8aa16ed9 hwrng: core - Fix page fault dead lock on mmap-ed hwrng ... commit 78aafb3884 upstream. There is a dead-lock in the hwrng device read path. This triggers when the user reads from /dev/hwrng into memory also mmap-ed from /dev/hwrng. The resulting page fault triggers a recursive read which then dead-locks. Fix this by using a stack buffer when calling copy_to_user. Reported-by: Edward Adam Davis <eadavis@qq.com> Reported-by: syzbot+c52ab18308964d248092@syzkaller.appspotmail.com Fixes: 9996508b33 ("hwrng: core - Replace u32 in driver API with byte array") Cc: <stable@vger.kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-01-31 16:16:58 -08:00
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agp	parisc: sba: Fix compile warning wrt list of SBA devices	2023-10-06 14:56:51 +02:00
hw_random	hwrng: core - Fix page fault dead lock on mmap-ed hwrng	2024-01-31 16:16:58 -08:00
ipmi	ipmi_si: fix a memleak in try_smi_init()	2023-09-13 09:43:00 +02:00
mwave	…
pcmcia	Revert "char: pcmcia: cm4000_cs: Replace mdelay with usleep_range in set_protocol"	2023-03-10 09:33:32 +01:00
tpm	tpm_tis: Resend command to recover from data transfer errors	2023-09-23 11:11:02 +02:00
xilinx_hwicap	…
xillybus	char: xillybus: fix a refcount leak in cleanup_dev()	2022-04-24 17:30:45 +02:00
Kconfig	Char / Misc driver changes for 6.0-rc1	2022-08-04 11:05:48 -07:00
Makefile	char: remove VR41XX related char driver	2022-07-28 16:12:33 +02:00
adi.c	…
apm-emulation.c	apm-emulation: drop unexpected word "the" in the comments	2022-06-27 16:15:27 +02:00
applicom.c	applicom: Fix PCI device refcount leak in applicom_init()	2023-03-10 09:33:32 +01:00
applicom.h	…
bsr.c	…
ds1620.c	…
dsp56k.c	…
dtlk.c	…
hangcheck-timer.c	…
hpet.c	…
lp.c	char: lp: remove redundant initialization of err	2022-06-10 15:29:50 +02:00
mem.c	random: restore O_NONBLOCK support	2022-09-23 12:27:57 +02:00
misc.c	char: misc: remove usage of list iterator past the loop body	2022-04-24 17:15:12 +02:00
mspec.c	…
nsc_gpio.c	…
nvram.c	…
nwbutton.c	…
nwbutton.h	…
nwflash.c	…
pc8736x_gpio.c	…
powernv-op-panel.c	…
ppdev.c	…
ps3flash.c	…
random.c	use less confusing names for iov_iter direction initializers	2023-02-09 11:28:04 +01:00
scx200_gpio.c	…
sonypi.c	…
tlclk.c	…
toshiba.c	…
ttyprintk.c	char: ttyprintk: register console	2022-04-22 16:24:47 +02:00
uv_mmtimer.c	…
virtio_console.c	Char/Misc and other driver updates for 5.18-rc1	2022-03-28 12:27:35 -07:00