a29ad21b98
Reads on tpm/tpm0/ppi/*operations can become very long on misconfigured systems. Reading the TPM is a blocking operation, thus a user could effectively trigger a DOS. Resolve this by caching the results and avoiding the blocking operations after the first read. [ jarkko: fixed atomic sleep: sed -i 's/spin_/mutex_/g' drivers/char/tpm/tpm_ppi.c sed -i 's/DEFINE_SPINLOCK/DEFINE_MUTEX/g' drivers/char/tpm/tpm_ppi.c ] Signed-off-by: Denis Aleksandrov <daleksan@redhat.com> Reported-by: Jan Stancek <jstancek@redhat.com> Closes: https://lore.kernel.org/linux-integrity/20250915210829.6661-1-daleksan@redhat.com/T/#u Suggested-by: Jarkko Sakkinen <jarkko@kernel.org> Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org> |
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|---|---|---|
| .. | ||
| agp | ||
| hw_random | ||
| ipmi | ||
| mwave | ||
| tpm | ||
| xilinx_hwicap | ||
| xillybus | ||
| Kconfig | ||
| Makefile | ||
| adi.c | ||
| apm-emulation.c | ||
| applicom.c | ||
| applicom.h | ||
| bsr.c | ||
| ds1620.c | ||
| dsp56k.c | ||
| dtlk.c | ||
| hangcheck-timer.c | ||
| hpet.c | ||
| lp.c | ||
| mem.c | ||
| misc.c | ||
| misc_minor_kunit.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 | ||
| scx200_gpio.c | ||
| sonypi.c | ||
| tlclk.c | ||
| toshiba.c | ||
| ttyprintk.c | ||
| uv_mmtimer.c | ||
| virtio_console.c | ||