Herbert Xu 26cc6d7006 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>		2024-02-23 08:54:24 +01:00
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agp	parisc: sba: Fix compile warning wrt list of SBA devices	2023-10-06 13:18:15 +02:00
hw_random	hwrng: core - Fix page fault dead lock on mmap-ed hwrng	2024-02-23 08:54:24 +01:00
ipmi	ipmi_si: fix a memleak in try_smi_init()	2023-09-19 12:22:50 +02:00
mwave	char/mwave: Adjust io port register size	2022-01-27 11:04:09 +01:00
pcmcia	Revert "char: pcmcia: cm4000_cs: Replace mdelay with usleep_range in set_protocol"	2023-03-10 09:39:38 +01:00
tpm	tpm_tis: Resend command to recover from data transfer errors	2023-09-23 11:09:56 +02:00
xilinx_hwicap	…
xillybus	char: xillybus: fix a refcount leak in cleanup_dev()	2022-06-14 18:36:21 +02:00
Kconfig	random: credit cpu and bootloader seeds by default	2022-06-22 14:21:58 +02:00
Makefile	…
adi.c	…
apm-emulation.c	…
applicom.c	applicom: Fix PCI device refcount leak in applicom_init()	2023-03-10 09:39:38 +01:00
applicom.h	…
bsr.c	…
ds1620.c	…
dsp56k.c	…
dtlk.c	…
hangcheck-timer.c	…
hpet.c	…
lp.c	…
mem.c	random: restore O_NONBLOCK support	2022-10-15 07:59:01 +02:00
misc.c	…
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	random: use expired timer rather than wq for mixing fast pool	2022-10-15 07:59:02 +02:00
scx200_gpio.c	…
sonypi.c	…
tb0219.c	…
tlclk.c	…
toshiba.c	…
ttyprintk.c	…
uv_mmtimer.c	…
virtio_console.c	virtio_console: eliminate anonymous module_init & module_exit	2022-04-13 20:59:13 +02:00