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envelope-from=alxndr@bu.edu; helo=NAM12-BN8-obe.outbound.protection.outlook.com X-Spam_score_int: -8 X-Spam_score: -0.9 X-Spam_bar: / X-Spam_report: (-0.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HK_RANDOM_ENVFROM=0.001, HK_RANDOM_FROM=0.999, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Fam Zheng , Laurent Vivier , Thomas Huth , Cave-Ayland , Alexander Bulekov , Paolo Bonzini Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Original crash: qemu-fuzz-i386: ../hw/scsi/esp.c:791: void esp_transfer_data(SCSIRequest *, uint32_t): Assertion `!s->do_cmd' failed. ==257532== ERROR: libFuzzer: deadly signal __assert_fail assert/assert.c:101:3 esp_transfer_data hw/scsi/esp.c:791:5 scsi_req_data hw/scsi/scsi-bus.c:1412:9 scsi_disk_emulate_read_data hw/scsi/scsi-disk.c:1407:9 scsi_req_continue hw/scsi/scsi-bus.c:1394:9 do_busid_cmd hw/scsi/esp.c:317:9 handle_s_without_atn hw/scsi/esp.c:393:9 esp_reg_write hw/scsi/esp.c:1029:13 esp_pci_io_write hw/scsi/esp-pci.c:215:9 memory_region_write_accessor softmmu/memory.c:491:5 access_with_adjusted_size softmmu/memory.c:552:18 memory_region_dispatch_write softmmu/memory.c:1502:16 flatview_write_continue softmmu/physmem.c:2746:23 flatview_write softmmu/physmem.c:2786:14 address_space_write softmmu/physmem.c:2878:18 cpu_outl softmmu/ioport.c:80:5 Based-on: <20210401074933.9923-1-mark.cave-ayland@ilande.co.uk> Signed-off-by: Alexander Bulekov --- tests/qtest/am53c974-test.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) The patch took care of the handle_satn_stop assert. Here's a test case for the other assert. Pasteable: cat << EOF | ./qemu-system-i386 -display none -machine accel=qtest, -m \ 512M -device am53c974,id=scsi -device scsi-hd,drive=disk0 -drive \ id=disk0,if=none,file=null-co://,format=raw -nodefaults -qtest stdio outl 0xcf8 0x80001010 outl 0xcfc 0xc000 outl 0xcf8 0x80001004 outw 0xcfc 0x01 outl 0xc00b 0x4100 outb 0xc008 0x42 outw 0xc03f 0x0300 outl 0xc00b 0xc100 EOF diff --git a/tests/qtest/am53c974-test.c b/tests/qtest/am53c974-test.c index 9c4285d0c0..506276677a 100644 --- a/tests/qtest/am53c974-test.c +++ b/tests/qtest/am53c974-test.c @@ -9,6 +9,22 @@ #include "libqos/libqtest.h" +static void test_do_cmd_assert(void) +{ + QTestState *s = qtest_init( + "-device am53c974,id=scsi " + "-device scsi-hd,drive=disk0 -drive " + "id=disk0,if=none,file=null-co://,format=raw -nodefaults"); + qtest_outl(s, 0xcf8, 0x80001010); + qtest_outl(s, 0xcfc, 0xc000); + qtest_outl(s, 0xcf8, 0x80001004); + qtest_outw(s, 0xcfc, 0x01); + qtest_outl(s, 0xc00b, 0x4100); + qtest_outb(s, 0xc008, 0x42); + qtest_outw(s, 0xc03f, 0x0300); + qtest_outl(s, 0xc00b, 0xc100); + qtest_quit(s); +} static void test_cmdfifo_underflow_ok(void) { @@ -194,6 +210,8 @@ int main(int argc, char **argv) g_test_init(&argc, &argv, NULL); if (strcmp(arch, "i386") == 0) { + qtest_add_func("am53c974/test_do_cmd_asser", + test_do_cmd_assert); qtest_add_func("am53c974/test_cmdfifo_underflow_ok", test_cmdfifo_underflow_ok); qtest_add_func("am53c974/test_cmdfifo_underflow2_ok", -- 2.28.0