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| /openbmc/qemu/hw/misc/ |
| H A D | aspeed_hace.c | diff ed5d9774c624918977b2f274bb2e47c74047102d Tue Feb 07 02:02:05 CST 2023 Philippe Mathieu-Daudé <philmd@linaro.org> hw/misc/aspeed_hace: Do not crash if address_space_map() failed
address_space_map() can fail:
uart:~$ hash test
sha256_test
tv[0]:
Segmentation fault: 11
Thread 3 "qemu-system-arm" received signal SIGSEGV, Segmentation fault.
gen_acc_mode_iov (req_len=0x7ffff18b7778, id=<optimized out>, iov=0x7ffff18b7780, s=0x555556ce0bd0)
at ../hw/misc/aspeed_hace.c:171
171 if (has_padding(s, &iov[id], *req_len, &total_msg_len, &pad_offset)) {
(gdb) bt
#0 gen_acc_mode_iov (req_len=0x7ffff18b7778, id=<optimized out>, iov=0x7ffff18b7780, s=0x555556ce0bd0)
at ../hw/misc/aspeed_hace.c:171
#1 do_hash_operation (s=s@entry=0x555556ce0bd0, algo=3, sg_mode=sg_mode@entry=true, acc_mode=acc_mode@entry=true)
at ../hw/misc/aspeed_hace.c:224
#2 0x00005555559bdbb8 in aspeed_hace_write (opaque=<optimized out>, addr=12, data=262488, size=<optimized out>)
at ../hw/misc/aspeed_hace.c:358
This change doesn't fix much, but at least the guest
can't crash QEMU anymore. Instead it is still usable:
uart:~$ hash test
sha256_test
tv[0]:hash_final error
sha384_test
tv[0]:hash_final error
sha512_test
tv[0]:hash_final error
[00:00:06.278,000] <err> hace_global: HACE poll timeout
[00:00:09.324,000] <err> hace_global: HACE poll timeout
[00:00:12.261,000] <err> hace_global: HACE poll timeout
uart:~$
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Delevoryas <peter@pjd.dev>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
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