ci2 starts bisection 2025-10-05 00:11:03.201191148 +0000 UTC m=+216744.842247156 bisecting fixing commit since 3dea0e7f549ee8ce3ce9d058d6d5c494d9ad02dc building syzkaller on 4f67c4aece4f5794be20c6bc99c177e44b1320e8 ensuring issue is reproducible on original commit 3dea0e7f549ee8ce3ce9d058d6d5c494d9ad02dc testing commit 3dea0e7f549ee8ce3ce9d058d6d5c494d9ad02dc gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d9eb629a7b583acf42969b7820b080614ed365a40678b71f49456b5e9b07667c all runs: crashed: UBSAN: shift-out-of-bounds in pcl726_attach representative crash: UBSAN: shift-out-of-bounds in pcl726_attach, types: [UBSAN] check whether we can drop unnecessary instrumentation disabling configs for [kasan locking atomic_sleep hang memleak bug_or_warning], they are not needed testing commit 3dea0e7f549ee8ce3ce9d058d6d5c494d9ad02dc gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 31b4fdca63b42f6aa7b144a63276a13f8d028bf089fba9193d2f4f4d8a3d88ce all runs: crashed: UBSAN: shift-out-of-bounds in pcl726_attach representative crash: UBSAN: shift-out-of-bounds in pcl726_attach, types: [UBSAN] the bug reproduces without the instrumentation disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed kconfig minimization: base=3707 full=7423 leaves diff=2099 split chunks (needed=false): <2099> split chunk #0 of len 2099 into 5 parts testing without sub-chunk 1/5 disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed testing commit 3dea0e7f549ee8ce3ce9d058d6d5c494d9ad02dc gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a0d5be768be27b68b2469eea4486deb86ed8e2d4e411a7bc849049793ece29af all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 disabling configs for [locking atomic_sleep hang memleak bug_or_warning kasan], they are not needed testing commit 3dea0e7f549ee8ce3ce9d058d6d5c494d9ad02dc gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d845ea72904bf8b39a3b05e6d00e0a13b964415f398a8c24592ab8760a082247 all runs: crashed: UBSAN: shift-out-of-bounds in pcl726_attach representative crash: UBSAN: shift-out-of-bounds in pcl726_attach, types: [UBSAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [hang memleak bug_or_warning kasan locking atomic_sleep], they are not needed testing commit 3dea0e7f549ee8ce3ce9d058d6d5c494d9ad02dc gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1f444d700bf909c956e293d0d28856e27b229e41de3e5956098beaf03eaa7839 all runs: crashed: UBSAN: shift-out-of-bounds in pcl726_attach representative crash: UBSAN: shift-out-of-bounds in pcl726_attach, types: [UBSAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [kasan locking atomic_sleep hang memleak bug_or_warning], they are not needed testing commit 3dea0e7f549ee8ce3ce9d058d6d5c494d9ad02dc gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6b9f6c072c691f4f6e73d7198d1843e6095a4c101ec5eb8093564d60c52a5bf7 all runs: crashed: UBSAN: shift-out-of-bounds in pcl726_attach representative crash: UBSAN: shift-out-of-bounds in pcl726_attach, types: [UBSAN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [hang memleak bug_or_warning kasan locking atomic_sleep], they are not needed testing commit 3dea0e7f549ee8ce3ce9d058d6d5c494d9ad02dc gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fd7ef71027732702371cc8bb905e1e9cc7e171094ce54a0df6644a092dc5e4ef all runs: crashed: UBSAN: shift-out-of-bounds in pcl726_attach representative crash: UBSAN: shift-out-of-bounds in pcl726_attach, types: [UBSAN] the chunk can be dropped minimized to 420 configs; suspects: [6LOWPAN 6LOWPAN_GHC_EXT_HDR_DEST 6LOWPAN_GHC_EXT_HDR_FRAG 6LOWPAN_GHC_EXT_HDR_HOP 6LOWPAN_GHC_EXT_HDR_ROUTE 6LOWPAN_GHC_ICMPV6 6LOWPAN_GHC_UDP 6LOWPAN_NHC 6LOWPAN_NHC_DEST 6LOWPAN_NHC_FRAGMENT 6LOWPAN_NHC_HOP 6LOWPAN_NHC_IPV6 6LOWPAN_NHC_MOBILITY 6LOWPAN_NHC_ROUTING 6LOWPAN_NHC_UDP 6PACK 842_COMPRESS 842_DECOMPRESS 9P_FSCACHE 9P_FS_POSIX_ACL 9P_FS_SECURITY ACORN_PARTITION ACORN_PARTITION_ADFS ACORN_PARTITION_CUMANA ACORN_PARTITION_EESOX ACORN_PARTITION_ICS ACORN_PARTITION_POWERTEC ACORN_PARTITION_RISCIX ACPI_NFIT ACPI_PLATFORM_PROFILE ADFS_FS AFFS_FS AFS_FS AFS_FSCACHE AF_KCM AF_RXRPC AF_RXRPC_IPV6 AIX_PARTITION AMD_SFH_HID AMIGA_PARTITION ANDROID ANDROID_BINDERFS ANDROID_BINDER_IPC APPLE_MFI_FASTCHARGE AR5523 ARCH_ENABLE_THP_MIGRATION ASHMEM ASM_MODVERSIONS ASN1_ENCODER ASYNC_CORE ASYNC_MEMCPY ASYNC_PQ ASYNC_RAID6_RECOV ASYNC_TX_DMA ASYNC_XOR ATARI_PARTITION ATA_GENERIC ATA_OVER_ETH ATH10K ATH10K_CE ATH10K_PCI ATH10K_USB ATH11K ATH6KL ATH6KL_USB ATH9K ATH9K_AHB ATH9K_BTCOEX_SUPPORT ATH9K_CHANNEL_CONTEXT ATH9K_COMMON ATH9K_COMMON_DEBUG ATH9K_COMMON_SPECTRAL ATH9K_DEBUGFS ATH9K_DYNACK ATH9K_HTC ATH9K_HTC_DEBUGFS ATH9K_HW ATH9K_PCI ATH9K_PCOEM ATH9K_RFKILL ATH_COMMON ATM ATM_BR2684 ATM_CLIP ATM_DRIVERS ATM_LANE ATM_MPOA ATM_TCP AX25 AX25_DAMA_SLAVE AX88796B_PHY BAREUDP BATMAN_ADV BATMAN_ADV_BATMAN_V BATMAN_ADV_BLA BATMAN_ADV_DAT BATMAN_ADV_MCAST BATMAN_ADV_NC BCACHE BCMA BCMA_HOST_PCI_POSSIBLE BEFS_FS BFQ_CGROUP_DEBUG BFQ_GROUP_IOSCHED BFS_FS BIG_KEYS BLK_CGROUP BLK_CGROUP_IOCOST BLK_CGROUP_IOLATENCY BLK_CGROUP_RWSTAT BLK_DEBUG_FS_ZONED BLK_DEV_BSGLIB BLK_DEV_CRYPTOLOOP BLK_DEV_INTEGRITY BLK_DEV_INTEGRITY_T10 BLK_DEV_NBD BLK_DEV_NULL_BLK BLK_DEV_NULL_BLK_FAULT_INJECTION BLK_DEV_NVME BLK_DEV_PMEM BLK_DEV_RAM BLK_DEV_RNBD BLK_DEV_RNBD_CLIENT BLK_DEV_THROTTLING BLK_INLINE_ENCRYPTION BLK_INLINE_ENCRYPTION_FALLBACK BLK_MQ_RDMA BLK_RQ_ALLOC_TIME BLK_WBT BLK_WBT_MQ BLOCK_LEGACY_AUTOLOAD BONDING BPF_EVENTS BPF_JIT BPF_JIT_ALWAYS_ON BPF_JIT_DEFAULT_ON BPF_LSM BPF_PRELOAD BPF_PRELOAD_UMD BPF_STREAM_PARSER BPF_SYSCALL BPQETHER BRIDGE BRIDGE_CFM BRIDGE_EBT_802_3 BRIDGE_EBT_AMONG BRIDGE_EBT_ARP BRIDGE_EBT_ARPREPLY BRIDGE_EBT_BROUTE BRIDGE_EBT_DNAT BRIDGE_EBT_IP BRIDGE_EBT_IP6 BRIDGE_EBT_LIMIT BRIDGE_EBT_LOG BRIDGE_EBT_MARK BRIDGE_EBT_MARK_T BRIDGE_EBT_NFLOG BRIDGE_EBT_PKTTYPE BRIDGE_EBT_REDIRECT BRIDGE_EBT_SNAT BRIDGE_EBT_STP BRIDGE_EBT_T_FILTER BRIDGE_EBT_T_NAT BRIDGE_EBT_VLAN BRIDGE_IGMP_SNOOPING BRIDGE_MRP BRIDGE_NF_EBTABLES BRIDGE_VLAN_FILTERING BSD_DISKLABEL BSD_PROCESS_ACCT_V3 BT BTRFS_ASSERT BTRFS_FS BTRFS_FS_POSIX_ACL BTRFS_FS_REF_VERIFY BTT BT_6LOWPAN BT_ATH3K BT_BCM BT_BNEP BT_BNEP_MC_FILTER BT_BNEP_PROTO_FILTER BT_BREDR BT_CMTP BT_HCIBCM203X BT_HCIBFUSB BT_HCIBPA10X BT_HCIBTUSB BT_HCIBTUSB_AUTOSUSPEND BT_HCIBTUSB_BCM BT_HCIBTUSB_MTK BT_HCIBTUSB_RTL BT_HCIUART BT_HCIUART_3WIRE BT_HCIUART_AG6XX BT_HCIUART_BCSP BT_HCIUART_H4 BT_HCIUART_LL BT_HCIUART_MRVL BT_HCIUART_QCA BT_HCIUART_SERDEV BT_HCIVHCI BT_HIDP BT_HS BT_INTEL BT_LE BT_LEDS BT_MSFTEXT BT_QCA BT_RFCOMM BT_RFCOMM_TTY BT_RTL CACHEFILES CAIF CAIF_DEBUG CAIF_DRIVERS CAIF_NETDEV CAIF_TTY CAIF_USB CAIF_VIRTIO CAN CAN_8DEV_USB CAN_BCM CAN_CALC_BITTIMING CAN_DEV CAN_EMS_USB CAN_ESD_USB2 CAN_ETAS_ES58X CAN_GS_USB CAN_GW CAN_IFI_CANFD CAN_ISOTP CAN_J1939 CAN_KVASER_USB CAN_MCBA_USB CAN_PEAK_USB CAN_RAW CAN_SLCAN CAN_UCAN CAN_VCAN CAN_VXCAN CAPI_TRACE CARL9170 CARL9170_HWRNG CARL9170_LEDS CARL9170_WPC CEC_CORE CEPH_FS CEPH_FSCACHE CEPH_FS_POSIX_ACL CEPH_LIB CEPH_LIB_USE_DNS_RESOLVER CFG80211 CFG80211_CRDA_SUPPORT CFG80211_DEBUGFS CFG80211_DEFAULT_PS CFG80211_REQUIRE_SIGNED_REGDB CFG80211_USE_KERNEL_REGDB_KEYS CFG80211_WEXT CFS_BANDWIDTH CGROUP_BPF CGROUP_DEVICE CGROUP_HUGETLB CGROUP_NET_CLASSID CGROUP_NET_PRIO CGROUP_PERF CGROUP_RDMA CGROUP_WRITEBACK CHARGER_ISP1704 CHR_DEV_ST CIFS CIFS_ALLOW_INSECURE_LEGACY CIFS_DEBUG CIFS_DFS_UPCALL CIFS_FSCACHE CIFS_POSIX CIFS_SMB_DIRECT CIFS_SWN_UPCALL CIFS_UPCALL CIFS_XATTR CLS_U32_MARK CLS_U32_PERF CMA CMA_SIZE_SEL_MBYTES CMDLINE_PARTITION COMEDI COMEDI_8254 COMEDI_8255 COMEDI_8255_PCI COMEDI_8255_SA COMEDI_ADL_PCI9118 COMEDI_ADQ12B COMEDI_AIO_AIO12_8 COMEDI_AIO_IIRO_16 COMEDI_AMPLC_DIO200 COMEDI_AMPLC_DIO200_ISA COMEDI_AMPLC_PC236 COMEDI_AMPLC_PC236_ISA COMEDI_AMPLC_PC263_ISA COMEDI_BOND COMEDI_C6XDIGIO COMEDI_DAC02 COMEDI_DAS08 COMEDI_DAS08_ISA COMEDI_DAS16M1 COMEDI_DAS1800 COMEDI_DAS6402 COMEDI_DAS800 COMEDI_DMM32AT COMEDI_DT2801 COMEDI_DT2811 COMEDI_DT2814 COMEDI_DT2815 COMEDI_DT2817 COMEDI_DT282X COMEDI_DT9812 COMEDI_FL512 COMEDI_ISADMA COMEDI_ISA_DRIVERS COMEDI_KCOMEDILIB COMEDI_MISC_DRIVERS COMEDI_MPC624 COMEDI_MULTIQ3 COMEDI_NI_ATMIO16D COMEDI_NI_AT_A2150 COMEDI_NI_AT_AO COMEDI_NI_DAQ_700_CS COMEDI_NI_LABPC COMEDI_NI_LABPC_CS COMEDI_NI_LABPC_ISA COMEDI_NI_LABPC_ISADMA COMEDI_NI_LABPC_PCI COMEDI_NI_USB6501 COMEDI_PARPORT COMEDI_PCI_DRIVERS COMEDI_PCL711 COMEDI_PCL724 COMEDI_PCL726 COMEDI_PCL730 COMEDI_PCL812 COMEDI_PCL816 COMEDI_PCL818 COMEDI_PCM3724 COMEDI_PCMAD COMEDI_PCMCIA_DRIVERS COMEDI_PCMDA12 COMEDI_PCMMIO COMEDI_PCMUIO COMEDI_RTI800 COMEDI_RTI802 COMEDI_S526 COMEDI_TEST COMEDI_USBDUX COMEDI_USBDUXFAST COMEDI_USBDUXSIGMA COMEDI_USB_DRIVERS COMEDI_VMK80XX COMPAT_NETLINK_MESSAGES COUNTER CRAMFS CRAMFS_BLOCKDEV CRAMFS_MTD CRC4 CRC64 CRC7 CRC8 CRC_ITU_T CRC_T10DIF CRYPTO_ADIANTUM CRYPTO_AEGIS128 CRYPTO_AEGIS128_AESNI_SSE2 CRYPTO_AES_NI_INTEL CRYPTO_AES_TI CRYPTO_ANSI_CPRNG CRYPTO_ANUBIS CRYPTO_ARC4 CRYPTO_ARCH_HAVE_LIB_BLAKE2S CRYPTO_ARCH_HAVE_LIB_CHACHA CRYPTO_ARCH_HAVE_LIB_CURVE25519 CRYPTO_ARCH_HAVE_LIB_POLY1305 CRYPTO_BLAKE2B CRYPTO_BLAKE2S_X86 CRYPTO_BLOWFISH CRYPTO_BLOWFISH_COMMON CRYPTO_BLOWFISH_X86_64 CRYPTO_CAMELLIA CRYPTO_CAMELLIA_AESNI_AVX2_X86_64 CRYPTO_CAMELLIA_AESNI_AVX_X86_64 CRYPTO_CAMELLIA_X86_64 CRYPTO_CAST5 CRYPTO_CAST5_AVX_X86_64 CRYPTO_CAST6 CRYPTO_CAST6_AVX_X86_64 CRYPTO_CAST_COMMON CRYPTO_CHACHA20 CRYPTO_CHACHA20POLY1305 CRYPTO_CHACHA20_X86_64 CRYPTO_CRC32 CRYPTO_CRC32C_INTEL CRYPTO_CRC32_PCLMUL CRYPTO_CRCT10DIF CRYPTO_CRCT10DIF_PCLMUL CRYPTO_CRYPTD CRYPTO_CTS CRYPTO_CURVE25519 CRYPTO_CURVE25519_X86 CRYPTO_DEFLATE CRYPTO_DES CRYPTO_DES3_EDE_X86_64 CRYPTO_DEV_CCP CRYPTO_DEV_CCP_DD CRYPTO_DEV_PADLOCK CRYPTO_DEV_PADLOCK_AES CRYPTO_DEV_PADLOCK_SHA CRYPTO_DEV_QAT CRYPTO_DEV_QAT_C3XXX CRYPTO_DEV_QAT_C3XXXVF CRYPTO_DEV_QAT_C62X CRYPTO_DEV_QAT_C62XVF CRYPTO_DEV_QAT_DH895xCC CRYPTO_DEV_QAT_DH895xCCVF CRYPTO_DEV_VIRTIO CRYPTO_DH CRYPTO_DRBG_CTR CRYPTO_DRBG_HASH CRYPTO_ECB CRYPTO_ECC CRYPTO_ECDH CRYPTO_ECRDSA CRYPTO_ENGINE CRYPTO_ESSIV CRYPTO_FCRYPT CRYPTO_GHASH_CLMUL_NI_INTEL CRYPTO_KEYWRAP CRYPTO_KHAZAD CRYPTO_KPP CRYPTO_LIB_ARC4 CRYPTO_LIB_CHACHA CRYPTO_LIB_CHACHA20POLY1305 CRYPTO_LIB_CHACHA_GENERIC CRYPTO_LIB_CURVE25519 CRYPTO_LIB_CURVE25519_GENERIC CRYPTO_LIB_DES CRYPTO_LIB_POLY1305 CRYPTO_LIB_POLY1305_GENERIC CRYPTO_LIB_SM4 CRYPTO_LRW CRYPTO_MICHAEL_MIC CRYPTO_NHPOLY1305 CRYPTO_NHPOLY1305_AVX2 CRYPTO_NHPOLY1305_SSE2 CRYPTO_PCBC CRYPTO_PCRYPT CRYPTO_POLY1305 CRYPTO_POLY1305_X86_64 CRYPTO_RMD160 CRYPTO_SEED CRYPTO_SERPENT CRYPTO_SERPENT_AVX2_X86_64 CRYPTO_SERPENT_AVX_X86_64 CRYPTO_SERPENT_SSE2_X86_64 CRYPTO_SHA1_SSSE3 CRYPTO_SHA256_SSSE3 CRYPTO_SHA3 CRYPTO_SHA512_SSSE3 CRYPTO_SIMD CRYPTO_SM2 CRYPTO_SM3 CRYPTO_SM4 CRYPTO_STREEBOG CRYPTO_TEA CRYPTO_TWOFISH CRYPTO_TWOFISH_AVX_X86_64 CRYPTO_TWOFISH_COMMON CRYPTO_TWOFISH_X86_64 CRYPTO_TWOFISH_X86_64_3WAY CRYPTO_USER CRYPTO_USER_API CRYPTO_USER_API_AEAD CRYPTO_USER_API_ENABLE_OBSOLETE CRYPTO_USER_API_HASH CRYPTO_USER_API_RNG CRYPTO_USER_API_SKCIPHER CRYPTO_VMAC CRYPTO_WP512 CRYPTO_XCBC CRYPTO_XTS CRYPTO_XXHASH CUSE CYPRESS_FIRMWARE DAMON DAMON_DBGFS DAMON_VADDR DCA DCB DMA_CMA FSCACHE FUSE_FS HAMRADIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_RTRS_CLIENT IOSCHED_BFQ ISDN ISDN_CAPI LIBNVDIMM MAC80211 MAC80211_LEDS MEDIA_SUPPORT MTD NET_CLS_U32 PARTITION_ADVANCED PCCARD PCMCIA RFKILL SERIAL_DEV_BUS STAGING TLS TLS_DEVICE USB_GADGET USB_PHY VLAN_8021Q WANT_COMPAT_NETLINK_MESSAGES WEXT_CORE WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ATH] disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak], they are not needed testing current HEAD 29e53a5b1c4f144301ee36a907e8b03d7733f0b0 testing commit 29e53a5b1c4f144301ee36a907e8b03d7733f0b0 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8fae507a39005fa67b3d230c2b570c19ae4d6c2753b12db470dfd38e31ab4ee1 all runs: OK false negative chance: 0.000 # git bisect start 29e53a5b1c4f144301ee36a907e8b03d7733f0b0 3dea0e7f549ee8ce3ce9d058d6d5c494d9ad02dc Bisecting: 567 revisions left to test after this (roughly 9 steps) [72632af764d0cd84c81cad44618c6c42cb78ad5e] ktest.pl: Prevent recursion of default variable options determine whether the revision contains the guilty commit revision 3dea0e7f549ee8ce3ce9d058d6d5c494d9ad02dc crashed and is reachable testing commit 72632af764d0cd84c81cad44618c6c42cb78ad5e gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 103fddbf8a8124a7679caa9460c82c97e639e3f4953a1471b4dd25f08a27da31 all runs: crashed: UBSAN: shift-out-of-bounds in pcl726_attach representative crash: UBSAN: shift-out-of-bounds in pcl726_attach, types: [UBSAN] # git bisect good 72632af764d0cd84c81cad44618c6c42cb78ad5e Bisecting: 283 revisions left to test after this (roughly 8 steps) [0ba6efb2c1747a90f69dc7d74902a6e1ea8c68d8] RDMA/bnxt_re: Fix to initialize the PBL array determine whether the revision contains the guilty commit revision 3dea0e7f549ee8ce3ce9d058d6d5c494d9ad02dc crashed and is reachable testing commit 0ba6efb2c1747a90f69dc7d74902a6e1ea8c68d8 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 457ff267a9b6cb6bf6c383ab9c1f6d927898285d68f9538769449baf2b8ef3ee all runs: OK false negative chance: 0.000 # git bisect bad 0ba6efb2c1747a90f69dc7d74902a6e1ea8c68d8 Bisecting: 141 revisions left to test after this (roughly 7 steps) [93f1be8de86af67a689a13cb9bd32a8c03ab0e1d] mtd: spinand: propagate spinand_wait() errors from spinand_write_page() determine whether the revision contains the guilty commit revision 3dea0e7f549ee8ce3ce9d058d6d5c494d9ad02dc crashed and is reachable testing commit 93f1be8de86af67a689a13cb9bd32a8c03ab0e1d gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 07d8124614b951d6fc3b3de8f1faeb5bf29df6853f3e76719b8320cd5633846b all runs: crashed: UBSAN: shift-out-of-bounds in pcl726_attach representative crash: UBSAN: shift-out-of-bounds in pcl726_attach, types: [UBSAN] # git bisect good 93f1be8de86af67a689a13cb9bd32a8c03ab0e1d Bisecting: 70 revisions left to test after this (roughly 6 steps) [696480028b59b6c57c0e3b7e388196518307d689] kbuild: userprogs: use correct linker when mixing clang and GNU ld determine whether the revision contains the guilty commit revision 3dea0e7f549ee8ce3ce9d058d6d5c494d9ad02dc crashed and is reachable testing commit 696480028b59b6c57c0e3b7e388196518307d689 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 621dfb2f889ca690f3d827d6e18db1179fb17a26f25a5e033af93354f2cbe2da all runs: crashed: UBSAN: shift-out-of-bounds in pcl726_attach representative crash: UBSAN: shift-out-of-bounds in pcl726_attach, types: [UBSAN] # git bisect good 696480028b59b6c57c0e3b7e388196518307d689 Bisecting: 35 revisions left to test after this (roughly 5 steps) [f596da86b8c75c0939d44bba067a5cea383dfaac] usb: renesas-xhci: Fix External ROM access timeouts determine whether the revision contains the guilty commit revision 72632af764d0cd84c81cad44618c6c42cb78ad5e crashed and is reachable testing commit f596da86b8c75c0939d44bba067a5cea383dfaac gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bd0e5c7c826cbe2249ef263f503d2bc8e5f0f547a0b8a95e767d3a06bccda912 all runs: OK false negative chance: 0.000 # git bisect bad f596da86b8c75c0939d44bba067a5cea383dfaac Bisecting: 17 revisions left to test after this (roughly 4 steps) [f89530d76d2868a11c541fbd9d396c1f8a26a99d] ALSA: hda/realtek: Add support for HP EliteBook x360 830 G6 and EliteBook 830 G6 determine whether the revision contains the guilty commit revision 72632af764d0cd84c81cad44618c6c42cb78ad5e crashed and is reachable testing commit f89530d76d2868a11c541fbd9d396c1f8a26a99d gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 87d21f51c123d1cd89bee7a4f28c0a6f19b94df20e2420ea6cabfdb6cc3ea6d6 all runs: crashed: UBSAN: shift-out-of-bounds in pcl726_attach representative crash: UBSAN: shift-out-of-bounds in pcl726_attach, types: [UBSAN] # git bisect good f89530d76d2868a11c541fbd9d396c1f8a26a99d Bisecting: 8 revisions left to test after this (roughly 3 steps) [e0b6b223167e1edde5c82edf38e393c06eda1f13] ftrace: Also allocate and copy hash for reading of filter files determine whether the revision contains the guilty commit revision 72632af764d0cd84c81cad44618c6c42cb78ad5e crashed and is reachable testing commit e0b6b223167e1edde5c82edf38e393c06eda1f13 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e7a4fd27dbaa57d61908e023e3c172a9bcf467537a81ddee8c3773fd1f6bb906 all runs: crashed: UBSAN: shift-out-of-bounds in pcl726_attach representative crash: UBSAN: shift-out-of-bounds in pcl726_attach, types: [UBSAN] # git bisect good e0b6b223167e1edde5c82edf38e393c06eda1f13 Bisecting: 4 revisions left to test after this (roughly 2 steps) [78232f3d0eac5ee75e6e7bf8acfe497c753251d2] usb: quirks: Add DELAY_INIT quick for another SanDisk 3.2Gen1 Flash Drive determine whether the revision contains the guilty commit revision 696480028b59b6c57c0e3b7e388196518307d689 crashed and is reachable testing commit 78232f3d0eac5ee75e6e7bf8acfe497c753251d2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cce59c50228b63d7393b9e6bdc7679479d863a3f2b33a00462b7300db0a1a6db all runs: crashed: UBSAN: shift-out-of-bounds in pcl726_attach representative crash: UBSAN: shift-out-of-bounds in pcl726_attach, types: [UBSAN] # git bisect good 78232f3d0eac5ee75e6e7bf8acfe497c753251d2 Bisecting: 2 revisions left to test after this (roughly 1 step) [bab220b0bb5af652007e278e8e8357f952b0e1ea] comedi: pcl726: Prevent invalid irq number determine whether the revision contains the guilty commit revision 696480028b59b6c57c0e3b7e388196518307d689 crashed and is reachable testing commit bab220b0bb5af652007e278e8e8357f952b0e1ea gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b72d636653c82ba231e451af31b3b305802c4ccb9f560b7ecbb840ee8b13a026 all runs: OK false negative chance: 0.000 # git bisect bad bab220b0bb5af652007e278e8e8357f952b0e1ea Bisecting: 0 revisions left to test after this (roughly 0 steps) [ab77e85bd3bc006ef40738f26f446a660813da44] comedi: Make insn_rw_emulate_bits() do insn->n samples determine whether the revision contains the guilty commit revision f89530d76d2868a11c541fbd9d396c1f8a26a99d crashed and is reachable testing commit ab77e85bd3bc006ef40738f26f446a660813da44 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 554d0daaeb8967e5d3d644a72653dd0f34ca55f6922825987d6959962385c0b3 all runs: crashed: UBSAN: shift-out-of-bounds in pcl726_attach representative crash: UBSAN: shift-out-of-bounds in pcl726_attach, types: [UBSAN] # git bisect good ab77e85bd3bc006ef40738f26f446a660813da44 bab220b0bb5af652007e278e8e8357f952b0e1ea is the first bad commit commit bab220b0bb5af652007e278e8e8357f952b0e1ea Author: Edward Adam Davis Date: Mon Jul 7 20:39:58 2025 +0800 comedi: pcl726: Prevent invalid irq number commit 96cb948408b3adb69df7e451ba7da9d21f814d00 upstream. The reproducer passed in an irq number(0x80008000) that was too large, which triggered the oob. Added an interrupt number check to prevent users from passing in an irq number that was too large. If `it->options[1]` is 31, then `1 << it->options[1]` is still invalid because it shifts a 1-bit into the sign bit (which is UB in C). Possible solutions include reducing the upper bound on the `it->options[1]` value to 30 or lower, or using `1U << it->options[1]`. The old code would just not attempt to request the IRQ if the `options[1]` value were invalid. And it would still configure the device without interrupts even if the call to `request_irq` returned an error. So it would be better to combine this test with the test below. Fixes: fff46207245c ("staging: comedi: pcl726: enable the interrupt support code") Cc: stable # 5.13+ Reported-by: syzbot+5cd373521edd68bebcb3@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=5cd373521edd68bebcb3 Tested-by: syzbot+5cd373521edd68bebcb3@syzkaller.appspotmail.com Signed-off-by: Edward Adam Davis Reviewed-by: Ian Abbott Link: https://lore.kernel.org/r/tencent_3C66983CC1369E962436264A50759176BF09@qq.com Signed-off-by: Greg Kroah-Hartman drivers/comedi/drivers/pcl726.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) accumulated error probability: 0.00 culprit signature: b72d636653c82ba231e451af31b3b305802c4ccb9f560b7ecbb840ee8b13a026 parent signature: 554d0daaeb8967e5d3d644a72653dd0f34ca55f6922825987d6959962385c0b3 revisions tested: 18, total time: 3h19m38.628717061s (build: 1h33m6.170299023s, test: 1h42m12.501002071s) first good commit: bab220b0bb5af652007e278e8e8357f952b0e1ea comedi: pcl726: Prevent invalid irq number recipients (to): ["abbotti@mev.co.uk" "eadavis@qq.com" "gregkh@linuxfoundation.org" "syzbot+5cd373521edd68bebcb3@syzkaller.appspotmail.com"] recipients (cc): []