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Fri, 29 Jan 2021 10:41:19 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Fri, 29 Jan 2021 10:31:49 -0000 From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= <1913668@bugs.launchpad.net> To: qemu-devel@nongnu.org X-Launchpad-Notification-Type: bug X-Launchpad-Bug: product=qemu; status=Confirmed; importance=Undecided; assignee=None; X-Launchpad-Bug-Tags: arm fuzzer X-Launchpad-Bug-Information-Type: Public X-Launchpad-Bug-Private: no X-Launchpad-Bug-Security-Vulnerability: no X-Launchpad-Bug-Commenters: a1xndr X-Launchpad-Bug-Reporter: Alexander Bulekov (a1xndr) X-Launchpad-Bug-Modifier: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9_=28philmd?= =?utf-8?q?=29?= References: <161188766555.32217.2070289263520375872.malonedeb@chaenomeles.canonical.com> Message-Id: <161191630960.6828.10586202362643992963.launchpad@gac.canonical.com> Subject: [Bug 1913668] Re: FPE in npcm7xx_pwm_calculate_freq X-Launchpad-Message-Rationale: Subscriber (QEMU) @qemu-devel-ml X-Launchpad-Message-For: qemu-devel-ml Precedence: bulk X-Generated-By: Launchpad (canonical.com); Revision="e00fb96b2e64b75333d0178ec15cb78e5aadb64d"; Instance="production" X-Launchpad-Hash: 65bf872d12f1b891ad2102cd57b275f16f48dbc7 Received-SPF: none client-ip=91.189.90.7; envelope-from=bounces@canonical.com; helo=indium.canonical.com X-Spam_score_int: -65 X-Spam_score: -6.6 X-Spam_bar: ------ X-Spam_report: (-6.6 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Bug 1913668 <1913668@bugs.launchpad.net> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" ** Tags added: arm ** Changed in: qemu Status: New =3D> Confirmed -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1913668 Title: FPE in npcm7xx_pwm_calculate_freq Status in QEMU: Confirmed Bug description: Reproducer: cat << EOF | ./qemu-system-aarch64 -M npcm750-evb \ -accel qtest -qtest stdio write 0xf0103008 0x4 0x09000000 write 0xf010300c 0x4 0xffffffff EOF Trace: ../hw/misc/npcm7xx_pwm.c:94:17: runtime error: division by zero SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior ../hw/misc/npcm7x= x_pwm.c:94:17 in AddressSanitizer:DEADLYSIGNAL =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D=3D717868=3D=3DERROR: AddressSanitizer: FPE on unknown address 0x5597c= 7190150 (pc 0x5597c7190150 bp 0x7fffcb17c5d0 sp 0x7fffcb17c4e0 T0) #0 0x5597c7190150 in npcm7xx_pwm_calculate_freq /hw/misc/npcm7xx_pwm.c:94= :17 #1 0x5597c7190150 in npcm7xx_pwm_update_freq /hw/misc/npcm7xx_pwm.c:122:21 #2 0x5597c718f06d in npcm7xx_pwm_write /hw/misc/npcm7xx_pwm.c #3 0x5597c8d241fe in memory_region_write_accessor /softmmu/memory.c:491:5 #4 0x5597c8d23bfb in access_with_adjusted_size /softmmu/memory.c:552:18 #5 0x5597c8d23467 in memory_region_dispatch_write /softmmu/memory.c #6 0x5597c90b3ffb in flatview_write_continue /softmmu/physmem.c:2759:23 #7 0x5597c90a971b in flatview_write /softmmu/physmem.c:2799:14 #8 0x5597c90a971b in address_space_write /softmmu/physmem.c:2891:18 #9 0x5597c8d11eee in qtest_process_command /softmmu/qtest.c:539:13 #10 0x5597c8d0eb97 in qtest_process_inbuf /softmmu/qtest.c:797:9 #11 0x5597c955f286 in fd_chr_read /chardev/char-fd.c:68:9 #12 0x7f994c124aae in g_main_context_dispatch (/usr/lib/x86_64-linux-gnu/= libglib-2.0.so.0+0x51aae) #13 0x5597c9bba363 in glib_pollfds_poll /util/main-loop.c:232:9 #14 0x5597c9bba363 in os_host_main_loop_wait /util/main-loop.c:255:5 #15 0x5597c9bba363 in main_loop_wait /util/main-loop.c:531:11 #16 0x5597c8c75599 in qemu_main_loop /softmmu/runstate.c:721:9 #17 0x5597c6f021fd in main /softmmu/main.c:50:5 #18 0x7f994bbc9cc9 in __libc_start_main csu/../csu/libc-start.c:308:16 #19 0x5597c6e55bc9 in _start (/home/alxndr/Development/qemu/build/qemu-sy= stem-aarch64+0x3350bc9) To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1913668/+subscriptions