ci2 starts bisection 2024-03-02 14:21:28.542190224 +0000 UTC m=+44411.095077834 bisecting fixing commit since 8fd7f44624538675abadc73f5a44e95016964d22 building syzkaller on 1c0ecc51adc9f44c7bd3f45c2aa1b62718d1236e ensuring issue is reproducible on original commit 8fd7f44624538675abadc73f5a44e95016964d22 testing commit 8fd7f44624538675abadc73f5a44e95016964d22 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: da291226daaf51928a5d70c035bb920d8c210a32b73d2a639234fc49bbda79e3 all runs: crashed: UBSAN: array-index-out-of-bounds in diNewExt representative crash: UBSAN: array-index-out-of-bounds in diNewExt, types: [UBSAN] check whether we can drop unnecessary instrumentation disabling configs for [LEAK BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 8fd7f44624538675abadc73f5a44e95016964d22 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 30e0e2fd65507e92ed8ee4de5ba219f3a95f9f543699647a00f0187a404ef2f5 all runs: crashed: UBSAN: array-index-out-of-bounds in diNewExt representative crash: UBSAN: array-index-out-of-bounds in diNewExt, types: [UBSAN] the bug reproduces without the instrumentation disabling configs for [ATOMIC_SLEEP HANG LEAK BUG KASAN LOCKDEP], they are not needed kconfig minimization: base=7493 full=9696 leaves diff=1934 split chunks (needed=false): <1934> split chunk #0 of len 1934 into 5 parts testing without sub-chunk 1/5 disabling configs for [LEAK BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 8fd7f44624538675abadc73f5a44e95016964d22 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e663fb5cbb9310896f2532702cffa592910725aa4f159ec6e141f5413a513a56 all runs: crashed: UBSAN: array-index-out-of-bounds in diNewExt representative crash: UBSAN: array-index-out-of-bounds in diNewExt, types: [UBSAN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 8fd7f44624538675abadc73f5a44e95016964d22 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 27c90d14e31a9ebc754aaa3084af3d84d9d7ab04fa5ec4510d1673b34400c9a1 all runs: boot failed: can't ssh into the instance unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0 testing without sub-chunk 3/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK BUG KASAN], they are not needed testing commit 8fd7f44624538675abadc73f5a44e95016964d22 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3db4e3123b18ef0b81a9671194d5b8cb53102abac29e27f4c5acb1f7924af023 all runs: crashed: UBSAN: array-index-out-of-bounds in diNewExt representative crash: UBSAN: array-index-out-of-bounds in diNewExt, types: [UBSAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 8fd7f44624538675abadc73f5a44e95016964d22 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7353f3ee5252bded8dd3a2c9eb42566c43af64b57d5f30bae519d480f6894b18 all runs: crashed: UBSAN: array-index-out-of-bounds in diNewExt representative crash: UBSAN: array-index-out-of-bounds in diNewExt, types: [UBSAN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LEAK BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 8fd7f44624538675abadc73f5a44e95016964d22 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 944c9e7dd293935991b4be2b03678915277b0c3326c4c14cd6e0e8c03c3a36e4 all runs: crashed: UBSAN: array-index-out-of-bounds in diNewExt representative crash: UBSAN: array-index-out-of-bounds in diNewExt, types: [UBSAN] the chunk can be dropped minimized to 387 configs; suspects: [6LOWPAN ACPI_VIDEO DLM DRM DRM_TTM DRM_TTM_HELPER DRM_UDL DRM_V3D DRM_VC4 DRM_VGEM DRM_VIRTIO_GPU DRM_VKMS DRM_VRAM_HELPER DUMMY DVB_AF9013 DVB_AF9033 DVB_AS102 DVB_AS102_FE DVB_B2C2_FLEXCOP DVB_B2C2_FLEXCOP_USB DVB_DIB3000MB DVB_DIB3000MC DVB_EC100 DVB_GP8PSK_FE DVB_RTL2830 DVB_RTL2832 DVB_RTL2832_SDR DVB_TEST_DRIVERS DVB_TTUSB_BUDGET DVB_TTUSB_DEC DVB_USB DVB_USB_A800 DVB_USB_AF9005 DVB_USB_AF9005_REMOTE DVB_USB_AF9015 DVB_USB_AF9035 DVB_USB_ANYSEE DVB_USB_AU6610 DVB_USB_AZ6007 DVB_USB_AZ6027 DVB_USB_CE6230 DVB_USB_CINERGY_T2 DVB_USB_CXUSB DVB_USB_DIB0700 DVB_USB_DIB3000MC DVB_USB_DIBUSB_MB DVB_USB_DIBUSB_MC DVB_USB_DIGITV DVB_USB_DTT200U DVB_USB_DTV5100 DVB_USB_DVBSKY DVB_USB_DW2102 DVB_USB_EC168 DVB_USB_GL861 DVB_USB_GP8PSK DVB_USB_LME2510 DVB_USB_M920X DVB_USB_MXL111SF DVB_USB_NOVA_T_USB2 DVB_USB_OPERA1 DVB_USB_PCTV452E DVB_USB_RTL28XXU DVB_USB_TECHNISAT_USB2 DVB_USB_TTUSB2 DVB_USB_UMT_010 DVB_USB_V2 DVB_USB_VP702X DVB_USB_VP7045 DVB_USB_ZD1301 DVB_VIDTV DVB_ZL10353 E100 ECRYPT_FS ECRYPT_FS_MESSAGING EEPROM_93CX6 EFS_FS ENCRYPTED_KEYS EQUALIZER EROFS_FS EROFS_FS_POSIX_ACL EROFS_FS_SECURITY EROFS_FS_XATTR EROFS_FS_ZIP EVM EVM_ADD_XATTRS EVM_ATTR_FSUUID EXFAT_FS EXPORTFS_BLOCK_OPS EXT3_FS_POSIX_ACL EXT3_FS_SECURITY EXT4_FS_SECURITY F2FS_CHECK_FS F2FS_FAULT_INJECTION F2FS_FS F2FS_FS_COMPRESSION F2FS_FS_LZ4 F2FS_FS_LZ4HC F2FS_FS_LZO F2FS_FS_LZORLE F2FS_FS_POSIX_ACL F2FS_FS_SECURITY F2FS_FS_XATTR F2FS_FS_ZSTD F2FS_STAT_FS FB_DEFERRED_IO FB_SYS_COPYAREA FB_SYS_FILLRECT FB_SYS_FOPS FB_SYS_IMAGEBLIT FB_TILEBLITTING FB_VIRTUAL FDDI FIB_RULES FIREWIRE FIREWIRE_NET FIREWIRE_OHCI FIREWIRE_SBP2 FRAMEBUFFER_CONSOLE_ROTATION FRONTSWAP FS_DAX FS_DAX_PMD FS_ENCRYPTION FS_ENCRYPTION_ALGS FS_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FW_LOADER_COMPRESS FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GET_FREE_REGION GFS2_FS GFS2_FS_LOCKING_DLM GOOGLE_COREBOOT_TABLE GOOGLE_FIRMWARE GOOGLE_MEMCONSOLE GOOGLE_MEMCONSOLE_COREBOOT GOOGLE_VPD GPIO_DLN2 GPIO_VIPERBOARD GREENASIA_FF GREYBUS GREYBUS_BRIDGED_PHY GREYBUS_ES2 GREYBUS_HID GREYBUS_USB GTP GVE HAVE_ARCH_USERFAULTFD_MINOR HAVE_IMA_KEXEC HDLC HDLC_CISCO HDLC_FR HDLC_PPP HDLC_RAW HDLC_RAW_ETH HDLC_X25 HDMI HFSPLUS_FS HFS_FS HIDRAW HID_ACCUTOUCH HID_ACRUX HID_ACRUX_FF HID_ALPS HID_APPLEIR HID_ASUS HID_AUREAL HID_BATTERY_STRENGTH HID_BETOP_FF HID_CMEDIA HID_CORSAIR HID_CP2112 HID_ELECOM HID_ELO HID_EMS_FF HID_GEMBIRD HID_GFRM HID_GREENASIA HID_GT683R HID_GYRATION HID_HOLTEK HID_ICADE HID_KEYTOUCH HID_KYE HID_LCPOWER HID_LED HID_LENOVO HID_LOGITECH_DJ HID_LOGITECH_HIDPP HID_MAGICMOUSE HID_MAYFLASH HID_NTI HID_NTRIG HID_ORTEK HID_PENMOUNT HID_PETALYNX HID_PICOLCD HID_PICOLCD_BACKLIGHT HID_PICOLCD_CIR HID_PICOLCD_FB HID_PICOLCD_LCD HID_PICOLCD_LEDS HID_PID HID_PLANTRONICS HID_PRIMAX HID_PRODIKEYS HID_RETRODE HID_RMI HID_ROCCAT HID_SAITEK HID_SAMSUNG HID_SENSOR_ACCEL_3D HID_SENSOR_ALS HID_SENSOR_CUSTOM_SENSOR HID_SENSOR_DEVICE_ROTATION HID_SENSOR_GYRO_3D HID_SENSOR_HUB HID_SENSOR_HUMIDITY HID_SENSOR_IIO_COMMON HID_SENSOR_IIO_TRIGGER HID_SENSOR_INCLINOMETER_3D HID_SENSOR_MAGNETOMETER_3D HID_SENSOR_PRESS HID_SENSOR_PROX HID_SENSOR_TEMP HID_SPEEDLINK HID_STEELSERIES HID_SUNPLUS HID_THINGM HID_TIVO HID_TOPSEED HID_TWINHAN HID_UCLOGIC HID_UDRAW_PS3 HID_WACOM HID_WALTOP HID_WIIMOTE HID_XINMO HID_ZYDACRON HMM_MIRROR HOLTEK_FF HOTPLUG_PCI_PCIE HPFS_FS I2C_DIOLAN_U2C I2C_DLN2 I2C_MUX_REG I2C_ROBOTFUZZ_OSIF I2C_SI4713 I2C_SLAVE_EEPROM I2C_TINY_USB I2C_VIPERBOARD IEEE802154 IEEE802154_6LOWPAN IEEE802154_ATUSB IEEE802154_DRIVERS IEEE802154_HWSIM IEEE802154_NL802154_EXPERIMENTAL IEEE802154_SOCKET IFB IMA IMA_APPRAISE IMA_APPRAISE_MODSIG IMA_DEFAULT_HASH_SHA256 IMA_LSM_RULES IMA_MEASURE_ASYMMETRIC_KEYS IMA_NG_TEMPLATE IMA_QUEUE_EARLY_BOOT_KEYS IMA_READ_POLICY IMA_WRITE_POLICY INET6_AH INET6_ESP INET6_ESPINTCP INET6_ESP_OFFLOAD INET6_IPCOMP INET6_TUNNEL INET6_XFRM_TUNNEL INET_AH INET_DCCP_DIAG INET_DIAG_DESTROY INET_ESP INET_ESPINTCP INET_ESP_OFFLOAD INET_IPCOMP INET_MPTCP_DIAG INET_RAW_DIAG INET_SCTP_DIAG INET_UDP_DIAG INET_XFRM_TUNNEL INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_ADDR_TRANS_CONFIGFS INFINIBAND_IPOIB INFINIBAND_IPOIB_CM INFINIBAND_IPOIB_DEBUG INFINIBAND_ISER INFINIBAND_ON_DEMAND_PAGING INFINIBAND_RTRS INFINIBAND_SRP INFINIBAND_USER_ACCESS INFINIBAND_USER_MAD INFINIBAND_USER_MEM INPUT_ATI_REMOTE2 INPUT_CM109 INPUT_IMS_PCU INPUT_JOYDEV INPUT_JOYSTICK INPUT_KEYSPAN_REMOTE INPUT_LEDS INPUT_MOUSEDEV INPUT_MOUSEDEV_PSAUX INPUT_POWERMATE INPUT_UINPUT INPUT_YEALINK INTEGRITY INTEGRITY_ASYMMETRIC_KEYS INTEGRITY_AUDIT INTEGRITY_SIGNATURE INTEGRITY_TRUSTED_KEYRING IP6_NF_MATCH_AH IP6_NF_MATCH_EUI64 IP6_NF_MATCH_FRAG IP6_NF_MATCH_HL IP6_NF_MATCH_IPV6HEADER IP6_NF_MATCH_MH IP6_NF_MATCH_OPTS IP6_NF_MATCH_RPFILTER IP6_NF_MATCH_RT IP6_NF_MATCH_SRH IP6_NF_RAW IP6_NF_SECURITY IP6_NF_TARGET_HL IP6_NF_TARGET_NPT IP6_NF_TARGET_SYNPROXY IPV6_FOU IPV6_FOU_TUNNEL IPV6_GRE IPV6_ILA IPV6_MIP6 IPV6_MROUTE IPV6_MROUTE_MULTIPLE_TABLES IPV6_MULTIPLE_TABLES IPV6_OPTIMISTIC_DAD IPV6_PIMSM_V2 IPV6_ROUTER_PREF IPV6_ROUTE_INFO IPV6_RPL_LWTUNNEL IPV6_SEG6_BPF IPV6_SEG6_HMAC IPV6_SEG6_LWTUNNEL IPV6_SIT_6RD IPV6_SUBTREES IPV6_TUNNEL IPV6_VTI IPVLAN IPVLAN_L3S IPVTAP IP_ADVANCED_ROUTER IP_DCCP IP_DCCP_CCID3 IP_DCCP_TFRC_LIB IP_FIB_TRIE_STATS IP_MROUTE IP_MROUTE_COMMON IP_MROUTE_MULTIPLE_TABLES IP_NF_ARPFILTER IP_NF_ARPTABLES IP_NF_ARP_MANGLE IP_NF_MATCH_AH IP_NF_MATCH_ECN IP_NF_MATCH_RPFILTER IP_NF_MATCH_TTL IP_NF_RAW IP_NF_SECURITY IP_NF_TARGET_CLUSTERIP IP_NF_TARGET_ECN IP_NF_TARGET_NETMAP IP_NF_TARGET_REDIRECT IP_NF_TARGET_SYNPROXY IP_NF_TARGET_TTL IP_PIMSM_V1 IP_PIMSM_V2 IP_PNP_RARP IP_ROUTE_CLASSID IP_ROUTE_MULTIPATH IP_ROUTE_VERBOSE IP_SCTP IP_SET IP_SET_BITMAP_IP IP_SET_BITMAP_IPMAC IP_SET_BITMAP_PORT IP_SET_HASH_IP IP_SET_HASH_IPMAC IP_SET_HASH_IPMARK IP_SET_HASH_IPPORT IP_SET_HASH_IPPORTIP IP_SET_HASH_IPPORTNET IP_SET_HASH_MAC IP_SET_HASH_NET IP_SET_HASH_NETIFACE IP_SET_HASH_NETNET IP_SET_HASH_NETPORT IP_SET_HASH_NETPORTNET IP_SET_LIST_SET IP_VS_DH IP_VS_FO IP_VS_FTP IP_VS_IPV6 IP_VS_LBLC IP_VS_LBLCR IP_VS_LC IP_VS_MH IP_VS_NFCT IP_VS_NQ IP_VS_OVF IP_VS_PE_SIP IP_VS_PROTO_AH IP_VS_PROTO_AH_ESP IP_VS_PROTO_ESP IP_VS_PROTO_SCTP IP_VS_PROTO_TCP IP_VS_PROTO_UDP IP_VS_RR IP_VS_SED IP_VS_SH IP_VS_TWOS IP_VS_WLC IP_VS_WRR IR_IGORPLUGUSB IR_IGUANA IR_IMON IR_MCEUSB IR_REDRAT3 IR_STREAMZAP IR_TTUSBIR ISDN ISDN_CAPI_MIDDLEWARE ISO9660_FS JFFS2_CMODE_PRIORITY JFFS2_COMPRESSION_OPTIONS JFFS2_FS JFFS2_FS_POSIX_ACL JFFS2_FS_SECURITY JFFS2_FS_WRITEBUFFER JFFS2_FS_XATTR JFFS2_LZO JFFS2_RTIME JFFS2_RUBIN JFFS2_SUMMARY JFFS2_ZLIB JFS_DEBUG JFS_FS JFS_POSIX_ACL JFS_SECURITY JOLIET JOYSTICK_IFORCE JOYSTICK_IFORCE_USB JOYSTICK_XPAD JOYSTICK_XPAD_FF JOYSTICK_XPAD_LEDS KARMA_PARTITION KCOV KCOV_ENABLE_COMPARISONS KCOV_INSTRUMENT_ALL KEYS_REQUEST_CACHE LAPB LCD_CLASS_DEVICE MAC802154 MEDIA_RADIO_SUPPORT MEDIA_TEST_SUPPORT MFD_DLN2 MFD_VIPERBOARD MPTCP NET_IPGRE_DEMUX NFT_FWD_NETDEV NF_CONNTRACK_FTP NF_CONNTRACK_SIP NF_TABLES NF_TABLES_NETDEV PARTITION_ADVANCED RADIO_ADAPTERS RADIO_SI4713 RFKILL SND SND_SOC SOUND WAN XFRM ZONE_DEVICE] disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing current HEAD a3eb3a74aa8c94e6c8130b55f3b031f29162868c testing commit a3eb3a74aa8c94e6c8130b55f3b031f29162868c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b4399ac05883a3f9de93bdf2e8999f6ae0093ceda0b100fa0ccbdd0ed1488594 all runs: OK false negative chance: 0.000 # git bisect start a3eb3a74aa8c94e6c8130b55f3b031f29162868c 8fd7f44624538675abadc73f5a44e95016964d22 Bisecting: 647 revisions left to test after this (roughly 9 steps) [6d2cbf517dcabc093159cf138ad5712c9c7fa954] ext4: avoid online resizing failures due to oversized flex bg determine whether the revision contains the guilty commit revision 8fd7f44624538675abadc73f5a44e95016964d22 crashed and is reachable testing commit 6d2cbf517dcabc093159cf138ad5712c9c7fa954 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5ff136d9d02a42a7f0c1f895dffa437c263a30e3106463ee95ddd99dec73a16c run #0: crashed: BUG: ADDR [#NUM] PREEMPT SMP run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: BUG: ADDR [#NUM] PREEMPT SMP, types: [UNKNOWN] # git bisect good 6d2cbf517dcabc093159cf138ad5712c9c7fa954 Bisecting: 323 revisions left to test after this (roughly 8 steps) [76690354e6ace5ed2e0c579906bce44d7ccc9e4e] kbuild: Fix changing ELF file type for output of gen_btf for big endian determine whether the revision contains the guilty commit revision 8fd7f44624538675abadc73f5a44e95016964d22 crashed and is reachable testing commit 76690354e6ace5ed2e0c579906bce44d7ccc9e4e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8b8b6f887108384b0eae09f04fa8dbe444c64395c9e401ae449e4f274b11c608 all runs: OK false negative chance: 0.000 # git bisect bad 76690354e6ace5ed2e0c579906bce44d7ccc9e4e Bisecting: 161 revisions left to test after this (roughly 7 steps) [fde3d47efe4d915a34c713f7e526e3ff6b3b485d] net: ipv4: fix a memleak in ip_setup_cork determine whether the revision contains the guilty commit revision 6d2cbf517dcabc093159cf138ad5712c9c7fa954 crashed and is reachable testing commit fde3d47efe4d915a34c713f7e526e3ff6b3b485d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 52d792cbd7b26152956b702dc57919478c83102f4e3caa047a278971a5bf9cc2 run #0: crashed: BUG: ADDR [#NUM] PREEMPT SMP run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: BUG: ADDR [#NUM] PREEMPT SMP, types: [UNKNOWN] # git bisect good fde3d47efe4d915a34c713f7e526e3ff6b3b485d Bisecting: 80 revisions left to test after this (roughly 6 steps) [d89a80e4827d8bad1c1eeb9c050b08f6ac5b0e68] net: stmmac: xgmac: fix a typo of register name in DPP safety handling determine whether the revision contains the guilty commit revision 6d2cbf517dcabc093159cf138ad5712c9c7fa954 crashed and is reachable testing commit d89a80e4827d8bad1c1eeb9c050b08f6ac5b0e68 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 971edf844faff546b3216c7f4f3fc134fc6299d05c5a1d2789be3bb07258cc6a all runs: OK false negative chance: 0.001 # git bisect bad d89a80e4827d8bad1c1eeb9c050b08f6ac5b0e68 Bisecting: 40 revisions left to test after this (roughly 5 steps) [3fa78ee0e381d83d9413f05cc229c5ba399116b5] hwmon: (coretemp) Fix bogus core_id to attr name mapping determine whether the revision contains the guilty commit revision 8fd7f44624538675abadc73f5a44e95016964d22 crashed and is reachable testing commit 3fa78ee0e381d83d9413f05cc229c5ba399116b5 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1f458a3858e2df949877fcfd91c624aa4a98971721739a4a3a4fea0fb9691971 run #0: crashed: BUG: ADDR [#NUM] PREEMPT SMP run #1: crashed: BUG: ADDR [#NUM] PREEMPT SMP run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: BUG: ADDR [#NUM] PREEMPT SMP, types: [UNKNOWN] # git bisect good 3fa78ee0e381d83d9413f05cc229c5ba399116b5 Bisecting: 20 revisions left to test after this (roughly 4 steps) [82761993d429755e1bdfa93b0401f4cf2ee6aacf] mtd: parsers: ofpart: add workaround for #size-cells 0 determine whether the revision contains the guilty commit revision 8fd7f44624538675abadc73f5a44e95016964d22 crashed and is reachable testing commit 82761993d429755e1bdfa93b0401f4cf2ee6aacf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a8dd14218d6a89fe6a46b2295d73cc22280c1c7e9977ef1a5221bcd04712539a all runs: OK false negative chance: 0.012 # git bisect bad 82761993d429755e1bdfa93b0401f4cf2ee6aacf Bisecting: 9 revisions left to test after this (roughly 3 steps) [a060da32357a423391c6d664013223e331be9857] netfilter: nft_compat: restrict match/target protocol to u16 determine whether the revision contains the guilty commit revision 3fa78ee0e381d83d9413f05cc229c5ba399116b5 crashed and is reachable testing commit a060da32357a423391c6d664013223e331be9857 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d03c515d1159fc9de5d9135b471fc630914693adce266a14136665e4af8cfd47 run #0: crashed: BUG: ADDR [#NUM] PREEMPT SMP run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: BUG: ADDR [#NUM] PREEMPT SMP, types: [UNKNOWN] # git bisect good a060da32357a423391c6d664013223e331be9857 Bisecting: 4 revisions left to test after this (roughly 2 steps) [a442ff5405d7fa9a9023530d51a93894cc11d13d] netfilter: nft_set_pipapo: remove scratch_aligned pointer determine whether the revision contains the guilty commit revision fde3d47efe4d915a34c713f7e526e3ff6b3b485d crashed and is reachable testing commit a442ff5405d7fa9a9023530d51a93894cc11d13d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b1f610708d85e31d7f739ccdbbab0b1feddf52dc7979642d121c714f59665dea all runs: OK false negative chance: 0.069 # git bisect bad a442ff5405d7fa9a9023530d51a93894cc11d13d Bisecting: 2 revisions left to test after this (roughly 1 step) [181dade2513017bee3804b2114b0726ba2d3ed0e] netfilter: nft_ct: reject direction for ct id determine whether the revision contains the guilty commit revision 6d2cbf517dcabc093159cf138ad5712c9c7fa954 crashed and is reachable testing commit 181dade2513017bee3804b2114b0726ba2d3ed0e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fafcf82f2be4f829c856112d62b324a79333fafe9e6840adfb0a27f905665d3f all runs: OK false negative chance: 0.069 # git bisect bad 181dade2513017bee3804b2114b0726ba2d3ed0e Bisecting: 0 revisions left to test after this (roughly 0 steps) [efdd665ce1a1634b8c1dad5e7f6baaef3e131d0a] drm/amd/display: Implement bounds check for stream encoder creation in DCN301 determine whether the revision contains the guilty commit revision 8fd7f44624538675abadc73f5a44e95016964d22 crashed and is reachable testing commit efdd665ce1a1634b8c1dad5e7f6baaef3e131d0a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8a16923cc61200ffdb4767d76ff64b1db6e5d9e9dcaa6d2a325db354dc17f217 all runs: OK false negative chance: 0.069 # git bisect bad efdd665ce1a1634b8c1dad5e7f6baaef3e131d0a efdd665ce1a1634b8c1dad5e7f6baaef3e131d0a is the first bad commit commit efdd665ce1a1634b8c1dad5e7f6baaef3e131d0a Author: Srinivasan Shanmugam Date: Wed Feb 7 10:20:57 2024 +0530 drm/amd/display: Implement bounds check for stream encoder creation in DCN301 [ Upstream commit 58fca355ad37dcb5f785d9095db5f748b79c5dc2 ] 'stream_enc_regs' array is an array of dcn10_stream_enc_registers structures. The array is initialized with four elements, corresponding to the four calls to stream_enc_regs() in the array initializer. This means that valid indices for this array are 0, 1, 2, and 3. The error message 'stream_enc_regs' 4 <= 5 below, is indicating that there is an attempt to access this array with an index of 5, which is out of bounds. This could lead to undefined behavior Here, eng_id is used as an index to access the stream_enc_regs array. If eng_id is 5, this would result in an out-of-bounds access on the stream_enc_regs array. Thus fixing Buffer overflow error in dcn301_stream_encoder_create reported by Smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn301/dcn301_resource.c:1011 dcn301_stream_encoder_create() error: buffer overflow 'stream_enc_regs' 4 <= 5 Fixes: 3a83e4e64bb1 ("drm/amd/display: Add dcn3.01 support to DC (v2)") Cc: Roman Li Cc: Rodrigo Siqueira Cc: Aurabindo Pillai Signed-off-by: Srinivasan Shanmugam Reviewed-by: Roman Li Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) accumulated error probability: 0.20 culprit signature: 8a16923cc61200ffdb4767d76ff64b1db6e5d9e9dcaa6d2a325db354dc17f217 parent signature: d03c515d1159fc9de5d9135b471fc630914693adce266a14136665e4af8cfd47 reproducer is flaky (0.12 repro chance estimate) revisions tested: 18, total time: 4h6m55.197398783s (build: 1h45m12.201712026s, test: 2h15m23.159454264s) first good commit: efdd665ce1a1634b8c1dad5e7f6baaef3e131d0a drm/amd/display: Implement bounds check for stream encoder creation in DCN301 recipients (to): ["alexander.deucher@amd.com" "roman.li@amd.com" "sashal@kernel.org" "srinivasan.shanmugam@amd.com"] recipients (cc): []