ci starts bisection 2024-09-10 05:55:32.785360437 +0000 UTC m=+46.738324273 bisecting cause commit starting from 788220eee30d67a485a13c34c02f51a82485f337 building syzkaller on 9750182a9a67f35e95cb1e077a3b69a4a9b54083 ensuring issue is reproducible on original commit 788220eee30d67a485a13c34c02f51a82485f337 testing commit 788220eee30d67a485a13c34c02f51a82485f337 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f03936bfbbff474aa9ea5f576398141b45b102cc5ffa00c08d2cc8402b04a828 all runs: crashed: KASAN: slab-use-after-free Read in l2cap_connect representative crash: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 788220eee30d67a485a13c34c02f51a82485f337 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8a8d82d63d9db34bcff800dac5a40e7b87143ac92026b22588b8d90fe1e11ec3 run #0: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #1: crashed: KASAN: slab-use-after-free Read in l2cap_send_cmd run #2: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #3: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #4: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #5: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #6: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #7: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #8: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #9: crashed: KASAN: slab-use-after-free Read in l2cap_connect representative crash: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN] the bug reproduces without the instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed kconfig minimization: base=4046 full=8137 leaves diff=2104 split chunks (needed=false): <2104> split chunk #0 of len 2104 into 5 parts testing without sub-chunk 1/5 disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 788220eee30d67a485a13c34c02f51a82485f337 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4cad6497877799f96e87fa0bb31a458fcd018635ac5e2453e51335608cd14055 all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 788220eee30d67a485a13c34c02f51a82485f337 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c067529c9303eb971eb0c51c2079fae98069dfb737eb3dbdb731e9a66e8e684e all runs: crashed: KASAN: slab-use-after-free Read in l2cap_connect representative crash: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 788220eee30d67a485a13c34c02f51a82485f337 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e8cd857e38d873b9e9a79443985d0bc1e73db29763fb9342814bb90ff4b9bb53 run #0: crashed: KASAN: slab-use-after-free Read in l2cap_send_cmd run #1: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #2: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #3: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #4: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #5: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #6: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #7: crashed: KASAN: slab-use-after-free Read in l2cap_send_cmd run #8: crashed: KASAN: slab-use-after-free Read in l2cap_send_cmd run #9: crashed: KASAN: slab-use-after-free Read in l2cap_connect representative crash: KASAN: slab-use-after-free Read in l2cap_send_cmd, types: [KASAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 788220eee30d67a485a13c34c02f51a82485f337 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 42bc11a710dc6c3c7f75d7dd31fecaf09e90e710a1bc6f8e735480805f0ea8da all runs: crashed: KASAN: slab-use-after-free Read in l2cap_connect representative crash: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 788220eee30d67a485a13c34c02f51a82485f337 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7362df23752651dc7a80b0d0fe60cb63ae63f3eed91c584e248fcdbbf366050f all runs: crashed: KASAN: slab-use-after-free Read in l2cap_connect representative crash: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN] the chunk can be dropped minimized to 421 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_NHLT ACPI_PLATFORM_PROFILE ADDRESS_MASKING ADFS_FS AFFS_FS AFS_FS AFS_FSCACHE AF_KCM AF_RXRPC AF_RXRPC_IPV6 AIX_PARTITION AMD_SFH_HID AMIGA_PARTITION ANDROID_BINDERFS ANDROID_BINDER_IPC ANON_VMA_NAME APERTURE_HELPERS APPLE_MFI_FASTCHARGE AR5523 ARCH_ENABLE_MEMORY_HOTREMOVE ARCH_ENABLE_THP_MIGRATION ARCH_USES_PG_UNCACHED ARCH_WANT_PMD_MKWRITE ASM_MODVERSIONS ASUS_TF103C_DOCK 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_LEDS 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 AUXILIARY_BUS 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 BCACHEFS_DEBUG BCACHEFS_ERASURE_CODING BCACHEFS_FS BCACHEFS_POSIX_ACL BCACHEFS_QUOTA BCACHEFS_SIX_OPTIMISTIC_SPIN BCMA BCMA_HOST_PCI_POSSIBLE BEFS_FS BFQ_CGROUP_DEBUG BFQ_GROUP_IOSCHED BFS_FS BIG_KEYS BLK_CGROUP_PUNT_BIO BLK_CGROUP_RWSTAT BLK_DEV_BSGLIB BLK_DEV_INTEGRITY 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_DEV_ZONED BLK_ICQ BLK_INLINE_ENCRYPTION BLK_INLINE_ENCRYPTION_FALLBACK BLK_WBT BLK_WBT_MQ BONDING BOOT_VESA_SUPPORT BPF_EVENTS BPF_JIT 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_NF_EBTABLES_LEGACY 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_POLL_SYNC 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_INTEL BT_LE BT_LEDS BT_LE_L2CAP_ECRED BT_MRVL BT_MRVL_SDIO BT_MSFTEXT BT_MTK BT_MTKSDIO BT_MTKUART 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_USB CAN_ETAS_ES58X CAN_F81604 CAN_GS_USB CAN_GW CAN_IFI_CANFD CAN_ISOTP CAN_J1939 CAN_KVASER_USB CAN_MCBA_USB CAN_NETLINK CAN_PEAK_USB CAN_RAW CAN_RX_OFFLOAD 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 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 CLOSURES CLS_U32_MARK CLS_U32_PERF CMA CMA_SIZE_SEL_MAX CMDLINE_PARTITION COMEDI COMEDI_DT9812 COMEDI_NI_USB6501 COMEDI_USBDUX COMEDI_USBDUXFAST COMEDI_USBDUXSIGMA COMEDI_USB_DRIVERS COMEDI_VMK80XX COMPAT_NETLINK_MESSAGES COUNTER CRAMFS CRAMFS_BLOCKDEV CRAMFS_MTD CRC4 CRC64 CRC64_ROCKSOFT 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_ARIA CRYPTO_ARIA_AESNI_AVX_X86_64 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_CHACHA20POLY1305 CRYPTO_CHACHA20_X86_64 CRYPTO_CRC32 CRYPTO_CRC32C_INTEL CRYPTO_CRC32_PCLMUL CRYPTO_CRC64_ROCKSOFT CRYPTO_CRCT10DIF CRYPTO_CRCT10DIF_PCLMUL CRYPTO_CRYPTD 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_ECDH CRYPTO_ECRDSA CRYPTO_ENGINE CRYPTO_ESSIV CRYPTO_FCRYPT CRYPTO_GHASH_CLMUL_NI_INTEL CRYPTO_HCTR2 CRYPTO_KDF800108_CTR CRYPTO_KEYWRAP CRYPTO_KHAZAD CRYPTO_KPP CRYPTO_LIB_ARC4 CRYPTO_LIB_CHACHA CRYPTO_LIB_CHACHA20POLY1305 CRYPTO_LIB_CURVE25519 CRYPTO_LIB_CURVE25519_GENERIC CRYPTO_LIB_POLY1305 CRYPTO_LIB_POLY1305_GENERIC CRYPTO_LRW CRYPTO_NHPOLY1305 CRYPTO_NHPOLY1305_AVX2 CRYPTO_NHPOLY1305_SSE2 CRYPTO_PCBC CRYPTO_PCRYPT CRYPTO_POLY1305 CRYPTO_POLY1305_X86_64 CRYPTO_POLYVAL CRYPTO_POLYVAL_CLMUL_NI 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_SHA512_SSSE3 CRYPTO_SIMD CRYPTO_SM3_AVX_X86_64 CRYPTO_SM4_AESNI_AVX2_X86_64 CRYPTO_SM4_AESNI_AVX_X86_64 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_XCTR CRYPTO_XXHASH CUSE CYPRESS_FIRMWARE DAMON DAMON_PADDR DAMON_RECLAIM DAMON_VADDR DAX DCA DCB DEFAULT_CODEL DEVICE_MIGRATION DEVICE_PRIVATE DEV_COREDUMP DEV_DAX DLN2_ADC DMABUF_HEAPS DMABUF_HEAPS_CMA DMABUF_HEAPS_SYSTEM DMABUF_MOVE_NOTIFY DMA_CMA DMA_ENGINE_RAID DMA_OPS DM_AUDIT DM_BIO_PRISON DM_BUFIO DM_CACHE DM_CACHE_SMQ DM_CLONE DM_CRYPT DM_FLAKEY DM_INTEGRITY DM_MULTIPATH DM_MULTIPATH_QL DM_MULTIPATH_ST DM_PERSISTENT_DATA DM_RAID DM_SNAPSHOT DM_THIN_PROVISIONING DM_UEVENT DM_VERITY DM_VERITY_FEC DM_WRITECACHE DM_ZONED DRAGONRISE_FF DRM DRM_AUX_BRIDGE DRM_BOCHS DRM_BRIDGE DRM_BUDDY DRM_CIRRUS_QEMU DRM_DEBUG_MM DRM_DISPLAY_DP_AUX_BUS DRM_DISPLAY_DP_HELPER DRM_DISPLAY_HDCP_HELPER DRM_DISPLAY_HDMI_HELPER DRM_DISPLAY_HELPER DRM_FBDEV_EMULATION DRM_GEM_SHMEM_HELPER DRM_GM12U320 DRM_GUD DRM_I915 DRM_I915_CAPTURE_ERROR DRM_I915_COMPRESS_ERROR DRM_I915_USERPTR DRM_KMS_HELPER DRM_MIPI_DSI DRM_PANEL DRM_PANEL_BRIDGE DRM_PANEL_EDP DRM_PANEL_ORIENTATION_QUIRKS DRM_SIMPLEDRM DRM_TTM DRM_TTM_HELPER DRM_UDL ENCRYPTED_KEYS FSCACHE FUSE_FS GPIOLIB HAMRADIO HID_DRAGONRISE IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_RTRS_CLIENT IOSCHED_BFQ ISDN ISDN_CAPI LIBNVDIMM MAC80211 MAC80211_DEBUGFS MAC80211_LEDS MEDIA_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MMC MTD NET_CLS_U32 NET_SCH_DEFAULT PARTITION_ADVANCED RFKILL SERIAL_DEV_BUS TLS TLS_DEVICE TRANSPARENT_HUGEPAGE TRUSTED_KEYS USB_GADGET USB_PHY VLAN_8021Q WANT_COMPAT_NETLINK_MESSAGES WEXT_CORE WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ATH X86_X32_ABI ZONE_DEVICE] disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed picked [v6.10 v6.9 v6.8 v6.6 v6.4 v6.2 v6.0 v5.18 v5.15 v5.12 v5.9 v5.6 v5.3 v5.0 v4.19] out of 33 release tags testing release v6.10 testing commit 0c3836482481200ead7b416ca80c68a29cfdaabd gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 74af15cb6b922aa35b414d7dd5ff5b26030ce4242ee75ab73e13ce1e7b2152cb run #0: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #1: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #2: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #3: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #4: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #5: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #6: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #7: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #8: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #9: OK representative crash: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN] testing release v6.9 testing commit a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 43dc2c6330214a2b31f4804630fa66a90132d5029e850484c78ca3641fb9173d all runs: crashed: KASAN: slab-use-after-free Read in l2cap_connect representative crash: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN] testing release v6.8 testing commit e8f897f4afef0031fe618a8e94127a0934896aba gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3d55b7a09bad076ef2ebbb21df89c0291dcd84cad0154f39c25df2416d986e84 run #0: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #1: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #2: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN] testing release v6.6 testing commit ffc253263a1375a65fa6c9f62a893e9767fbebfa gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 440c77b9210582e40dbb1c9d39c9fc7f62a4123d14698957b037b6f1ac0c6710 run #0: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #1: crashed: lost connection to test machine run #2: crashed: KASAN: slab-use-after-free Read in l2cap_connect 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: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN UNKNOWN] testing release v6.4 testing commit 6995e2de6891c724bfeb2db33d7b87775f913ad1 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b91ac08fd2c5195b776b9482666c758f5151e25b600d26f75605ca68a6967495 all runs: OK false negative chance: 0.000 # git bisect start ffc253263a1375a65fa6c9f62a893e9767fbebfa 6995e2de6891c724bfeb2db33d7b87775f913ad1 Bisecting: 14974 revisions left to test after this (roughly 14 steps) [692f5510159c79bfa312a4e27a15e266232bfb4c] Merge tag 'asoc-v6.6' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus testing commit 692f5510159c79bfa312a4e27a15e266232bfb4c gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ce4789b1fd093962a6cb2996422005a0333df402a75f222c07c6ef408cdaa419 all runs: OK false negative chance: 0.000 # git bisect good 692f5510159c79bfa312a4e27a15e266232bfb4c Bisecting: 7105 revisions left to test after this (roughly 13 steps) [0e72db77672ff4758a31fb5259c754a7bb229751] Merge tag 'soc-dt-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc testing commit 0e72db77672ff4758a31fb5259c754a7bb229751 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 61a92531333a2be4f2fcad002ac887c983a140dc0535cac19c4922e9bfa680fc run #0: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #1: crashed: KASAN: slab-use-after-free Read in l2cap_connect 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: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN] unable to determine the verdict: 18 good runs (wanted 15), for bad wanted 10 in total, got 20 # git bisect skip 0e72db77672ff4758a31fb5259c754a7bb229751 Bisecting: 7105 revisions left to test after this (roughly 13 steps) [c66c17a0f69b0e017bbc01d999a28ed96ee84826] crypto: rk3288 - Remove prepare/unprepare request testing commit c66c17a0f69b0e017bbc01d999a28ed96ee84826 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: aba452626ec1e13452904f5222bd0765bff8d74a92f087423b5e2ae08f122923 all runs: OK false negative chance: 0.000 # git bisect good c66c17a0f69b0e017bbc01d999a28ed96ee84826 Bisecting: 7105 revisions left to test after this (roughly 13 steps) [b610c4bbd153c2cde548db48559e170905d7c369] i2c: imx-lpi2c: return -EINVAL when i2c peripheral clk doesn't work testing commit b610c4bbd153c2cde548db48559e170905d7c369 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d786830f878ea4df7782836c41ccf85b804857a70a89453e265af60f3f3d9b7d all runs: OK false negative chance: 0.000 # git bisect good b610c4bbd153c2cde548db48559e170905d7c369 Bisecting: 7105 revisions left to test after this (roughly 13 steps) [6b00e72e4bee08048379a6365251b195b8a946d1] drm/panel: sitronix-st7789v: Use 9 bits per spi word by default testing commit 6b00e72e4bee08048379a6365251b195b8a946d1 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 892de0591713baad4c4caad29791444c86ba17b31d61814deb4e94c1bae1f68b all runs: OK false negative chance: 0.000 # git bisect good 6b00e72e4bee08048379a6365251b195b8a946d1 Bisecting: 7105 revisions left to test after this (roughly 13 steps) [08700ec705043eb0cee01b35cf5b9d63f0230d12] linux/export: fix reference to exported functions for parisc64 testing commit 08700ec705043eb0cee01b35cf5b9d63f0230d12 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d4145fd449d282efa02e355a7441aacdcc4face7d58264a7af0e80c0080d60fe run #0: crashed: KASAN: slab-use-after-free Read in l2cap_connect 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: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN] unable to determine the verdict: 19 good runs (wanted 15), for bad wanted 10 in total, got 20 # git bisect skip 08700ec705043eb0cee01b35cf5b9d63f0230d12 Bisecting: 7105 revisions left to test after this (roughly 13 steps) [e4311f7c0508d6d0d1176a0d7b7ef3ab4a24be1e] Merge tag 'selinux-pr-20230821' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux testing commit e4311f7c0508d6d0d1176a0d7b7ef3ab4a24be1e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b8c0519a3cac675363412f512cb34974ee26eb0729c3aeb76060dc905cb320cf all runs: OK false negative chance: 0.000 # git bisect good e4311f7c0508d6d0d1176a0d7b7ef3ab4a24be1e Bisecting: 7105 revisions left to test after this (roughly 13 steps) [6e1547f9873b0cea840625081ee4e5d7dd26661a] memory: tegra: Prefer octal over symbolic permissions testing commit 6e1547f9873b0cea840625081ee4e5d7dd26661a gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9c6fc7c8570950e32c7d1c9a8d2811e53b37da09471a7a3375178c9e8829f6c4 all runs: OK false negative chance: 0.000 # git bisect good 6e1547f9873b0cea840625081ee4e5d7dd26661a Bisecting: 7105 revisions left to test after this (roughly 13 steps) [7128578c79a73760305f89ff975047c124919dfc] selinux: use consistent type for AV rule specifier testing commit 7128578c79a73760305f89ff975047c124919dfc gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 95aa6325dcd33424114c57704cea63f7eacf13058ec62e4a08433b5d2ad047c0 all runs: OK false negative chance: 0.000 # git bisect good 7128578c79a73760305f89ff975047c124919dfc Bisecting: 7105 revisions left to test after this (roughly 13 steps) [d9d115fed674351effd8610aad1e8f1178a5f8b9] wifi: iwlwifi: remove WARN from read_mem32() testing commit d9d115fed674351effd8610aad1e8f1178a5f8b9 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fc28e73186e71e2a3635f338d2899ccea9cbee43d24793857c5996bb7015954a run #0: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #1: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #2: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #3: crashed: KASAN: slab-use-after-free Read in l2cap_connect 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: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN] # git bisect bad d9d115fed674351effd8610aad1e8f1178a5f8b9 Bisecting: 766 revisions left to test after this (roughly 10 steps) [d07b7b32da6f678d42d96a8b9824cf0a181ce140] Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next testing commit d07b7b32da6f678d42d96a8b9824cf0a181ce140 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c18a453fe8b4696519555dd2f111565352b05682029bc313f9ed4e8b3db97610 all runs: OK false negative chance: 0.000 # git bisect good d07b7b32da6f678d42d96a8b9824cf0a181ce140 Bisecting: 378 revisions left to test after this (roughly 9 steps) [6a1ed1430daa2ccf8ac457e0db93fb0925b801ca] Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next testing commit 6a1ed1430daa2ccf8ac457e0db93fb0925b801ca gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a2cb48542d5c13edb8c1b61a46595ce4160d0f2e9e7a80743f2a8cfeec4bac55 all runs: OK false negative chance: 0.000 # git bisect good 6a1ed1430daa2ccf8ac457e0db93fb0925b801ca Bisecting: 189 revisions left to test after this (roughly 8 steps) [3bfdcc324a04ba27f3fd2a6633c53de1758e7b6a] net: e1000e: Remove unused declarations testing commit 3bfdcc324a04ba27f3fd2a6633c53de1758e7b6a gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a06d868057aee62549c6e07cf24525da4f62cd6b17cd3e5a9c5f88902bd934f8 run #0: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #1: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #2: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #3: crashed: KASAN: slab-use-after-free Read in l2cap_connect 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: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN] # git bisect bad 3bfdcc324a04ba27f3fd2a6633c53de1758e7b6a Bisecting: 94 revisions left to test after this (roughly 7 steps) [66dee21524d9ac6461ec3052652b7bc0603ee0c5] Bluetooth: hci_event: drop only unbound CIS if Set CIG Parameters fails testing commit 66dee21524d9ac6461ec3052652b7bc0603ee0c5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 09eab8baf91bd9cd5a95d2bd88047679eab80c38ddab39825c184b4ce851db06 run #0: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #1: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #2: crashed: KASAN: slab-use-after-free Read in l2cap_connect 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: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN] # git bisect bad 66dee21524d9ac6461ec3052652b7bc0603ee0c5 Bisecting: 46 revisions left to test after this (roughly 6 steps) [c33362a528d968ed7fce21e6a9d4b1334bbbb25c] Bluetooth: hci_sync: Enable events for BIS capable devices testing commit c33362a528d968ed7fce21e6a9d4b1334bbbb25c gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5d00a69e74a6044a5f4f8fadc87694138d6957dd60a88cdcda6331ec1f553540 all runs: OK false negative chance: 0.002 # git bisect good c33362a528d968ed7fce21e6a9d4b1334bbbb25c Bisecting: 22 revisions left to test after this (roughly 5 steps) [0731c5ab4d510501a6a2da491ac68aea858bf834] Bluetooth: ISO: Add support for BT_PKT_STATUS testing commit 0731c5ab4d510501a6a2da491ac68aea858bf834 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a6a0d2e5e247b9b5adaca07a990a31a9da3539a4566737ece6bd015ff2cdcad6 all runs: OK false negative chance: 0.002 # git bisect good 0731c5ab4d510501a6a2da491ac68aea858bf834 Bisecting: 11 revisions left to test after this (roughly 4 steps) [094e3639623ee3b8a043e2b5285498b036a4dc09] Bluetooth: hci_sync: Fix handling of HCI_OP_CREATE_CONN_CANCEL testing commit 094e3639623ee3b8a043e2b5285498b036a4dc09 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 558b3d0497bb55419901798502ffd98ca67f215680642f196a3d0a5af34c9639 all runs: OK false negative chance: 0.002 # git bisect good 094e3639623ee3b8a043e2b5285498b036a4dc09 Bisecting: 5 revisions left to test after this (roughly 3 steps) [a091289218202bc09d9b9caa8afcde1018584aec] Bluetooth: hci_conn: Fix hci_le_set_cig_params testing commit a091289218202bc09d9b9caa8afcde1018584aec gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 22a36827eb42c8c445f0b0b8d25f8870ce622f18faec3acc002861ce6f9709e0 run #0: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #1: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #2: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #3: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #4: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #5: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #6: crashed: KASAN: slab-use-after-free Read in l2cap_connect 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: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN] # git bisect bad a091289218202bc09d9b9caa8afcde1018584aec Bisecting: 2 revisions left to test after this (roughly 2 steps) [16e3b6429159795a87add7584eb100b19aa1d70b] Bluetooth: hci_conn: Fix modifying handle while aborting testing commit 16e3b6429159795a87add7584eb100b19aa1d70b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ba40b51d2436f126e4fab6f26e96dcebfdf9a6e2735041a5289aa7c4f800c420 run #0: crashed: KASAN: slab-use-after-free Read in l2cap_connect 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: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN] unable to determine the verdict: 19 good runs (wanted 15), for bad wanted 10 in total, got 20 # git bisect skip 16e3b6429159795a87add7584eb100b19aa1d70b Bisecting: 2 revisions left to test after this (roughly 2 steps) [f2f84a70f9d0c9a3263194ca9d82e7bc6027d356] Bluetooth: hci_conn: Fix not allowing valid CIS ID testing commit f2f84a70f9d0c9a3263194ca9d82e7bc6027d356 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 88f4b43186cec41325195308bad26f8db3ffddc370c6f9be459899dddbcfd389 run #0: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #1: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #2: crashed: KASAN: slab-use-after-free Read in l2cap_connect 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: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN] # git bisect bad f2f84a70f9d0c9a3263194ca9d82e7bc6027d356 Bisecting: 1 revision left to test after this (roughly 1 step) [b7f923b1ef6a2e76013089d30c9552257056360a] Bluetooth: ISO: Fix not checking for valid CIG/CIS IDs testing commit b7f923b1ef6a2e76013089d30c9552257056360a gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1c4cd41332eecda8bfe31265ee17535726ab0ae69fb2a7edcb9a811b110a3bb4 run #0: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #1: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #2: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #3: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #4: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #5: crashed: KASAN: slab-use-after-free Read in l2cap_connect 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: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN] # git bisect bad b7f923b1ef6a2e76013089d30c9552257056360a Bisecting: 0 revisions left to test after this (roughly 0 steps) [5af1f84ed13a416297ab9ced7537f4d5ae7f329a] Bluetooth: hci_sync: Fix UAF on hci_abort_conn_sync testing commit 5af1f84ed13a416297ab9ced7537f4d5ae7f329a gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7305fcb45bf42af7726712878894df1bc9130f11064ba17709206206ab6f0028 run #0: crashed: KASAN: slab-use-after-free Read in l2cap_connect run #1: crashed: kernel panic: KASAN: panic_on_warn set ... run #2: crashed: KASAN: slab-use-after-free Read in l2cap_connect 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: KASAN: slab-use-after-free Read in l2cap_connect, types: [KASAN UNKNOWN] # git bisect bad 5af1f84ed13a416297ab9ced7537f4d5ae7f329a 5af1f84ed13a416297ab9ced7537f4d5ae7f329a is the first bad commit commit 5af1f84ed13a416297ab9ced7537f4d5ae7f329a Author: Luiz Augusto von Dentz Date: Thu Aug 3 11:04:51 2023 -0700 Bluetooth: hci_sync: Fix UAF on hci_abort_conn_sync Connections may be cleanup while waiting for the commands to complete so this attempts to check if the connection handle remains valid in case of errors that would lead to call hci_conn_failed: BUG: KASAN: slab-use-after-free in hci_conn_failed+0x1f/0x160 Read of size 8 at addr ffff888001376958 by task kworker/u3:0/52 CPU: 0 PID: 52 Comm: kworker/u3:0 Not tainted 6.5.0-rc1-00527-g2dfe76d58d3a #5615 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-1.fc38 04/01/2014 Workqueue: hci0 hci_cmd_sync_work Call Trace: dump_stack_lvl+0x1d/0x70 print_report+0xce/0x620 ? __virt_addr_valid+0xd4/0x150 ? hci_conn_failed+0x1f/0x160 kasan_report+0xd1/0x100 ? hci_conn_failed+0x1f/0x160 hci_conn_failed+0x1f/0x160 hci_abort_conn_sync+0x237/0x360 Signed-off-by: Luiz Augusto von Dentz net/bluetooth/hci_sync.c | 45 +++++++++++++++++++++++++++++---------------- 1 file changed, 29 insertions(+), 16 deletions(-) accumulated error probability: 0.00 culprit signature: 7305fcb45bf42af7726712878894df1bc9130f11064ba17709206206ab6f0028 parent signature: 558b3d0497bb55419901798502ffd98ca67f215680642f196a3d0a5af34c9639 reproducer is flaky (0.18 repro chance estimate) revisions tested: 34, total time: 12h46m14.399548854s (build: 5h17m8.559644825s, test: 6h25m48.378761819s) first bad commit: 5af1f84ed13a416297ab9ced7537f4d5ae7f329a Bluetooth: hci_sync: Fix UAF on hci_abort_conn_sync recipients (to): ["johan.hedberg@gmail.com" "linux-bluetooth@vger.kernel.org" "luiz.dentz@gmail.com" "luiz.von.dentz@intel.com" "marcel@holtmann.org"] recipients (cc): ["linux-kernel@vger.kernel.org"] crash: KASAN: slab-use-after-free Read in l2cap_connect Bluetooth: Wrong link type (-22) ================================================================== BUG: KASAN: slab-use-after-free in l2cap_connect+0xeb1/0x10f0 net/bluetooth/l2cap_core.c:4145 Read of size 8 at addr ffff888179785000 by task kworker/u5:8/8694 CPU: 0 PID: 8694 Comm: kworker/u5:8 Not tainted 6.5.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Workqueue: hci2 hci_rx_work Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x3d/0x70 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xc4/0x620 mm/kasan/report.c:475 kasan_report+0xda/0x110 mm/kasan/report.c:588 l2cap_connect+0xeb1/0x10f0 net/bluetooth/l2cap_core.c:4145 l2cap_connect_req net/bluetooth/l2cap_core.c:4287 [inline] l2cap_bredr_sig_cmd net/bluetooth/l2cap_core.c:5738 [inline] l2cap_sig_channel net/bluetooth/l2cap_core.c:6523 [inline] l2cap_recv_frame+0x2b27/0x83c0 net/bluetooth/l2cap_core.c:7802 hci_acldata_packet net/bluetooth/hci_core.c:3864 [inline] hci_rx_work+0x79c/0xcb0 net/bluetooth/hci_core.c:4099 process_one_work+0x929/0x1370 kernel/workqueue.c:2600 worker_thread+0xfb/0xe40 kernel/workqueue.c:2751 kthread+0x278/0x340 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:304 Allocated by task 2882: kasan_save_stack+0x33/0x60 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:383 kmalloc include/linux/slab.h:582 [inline] kzalloc include/linux/slab.h:703 [inline] l2cap_conn_add.part.0+0x53/0xd10 net/bluetooth/l2cap_core.c:7845 l2cap_conn_add net/bluetooth/l2cap_core.c:8239 [inline] l2cap_connect_cfm+0x3a1/0xda0 net/bluetooth/l2cap_core.c:8242 hci_connect_cfm include/net/bluetooth/hci_core.h:1885 [inline] hci_remote_features_evt+0x40c/0x9e0 net/bluetooth/hci_event.c:3756 hci_event_func net/bluetooth/hci_event.c:7570 [inline] hci_event_packet+0x706/0xce0 net/bluetooth/hci_event.c:7622 hci_rx_work+0x3fe/0xcb0 net/bluetooth/hci_core.c:4094 process_one_work+0x929/0x1370 kernel/workqueue.c:2600 worker_thread+0xfb/0xe40 kernel/workqueue.c:2751 kthread+0x278/0x340 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:304 Freed by task 2879: kasan_save_stack+0x33/0x60 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x50 mm/kasan/generic.c:522 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x166/0x1c0 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:162 [inline] slab_free_hook mm/slub.c:1792 [inline] slab_free_freelist_hook+0x10b/0x1e0 mm/slub.c:1818 slab_free mm/slub.c:3801 [inline] __kmem_cache_free+0xba/0x340 mm/slub.c:3814 l2cap_connect_cfm+0x38b/0xda0 net/bluetooth/l2cap_core.c:8238 hci_connect_cfm include/net/bluetooth/hci_core.h:1885 [inline] hci_conn_failed+0x158/0x2c0 net/bluetooth/hci_conn.c:1230 hci_abort_conn_sync+0x335/0x700 net/bluetooth/hci_sync.c:5433 hci_cmd_sync_work+0x173/0x340 net/bluetooth/hci_sync.c:306 process_one_work+0x929/0x1370 kernel/workqueue.c:2600 worker_thread+0xfb/0xe40 kernel/workqueue.c:2751 kthread+0x278/0x340 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:304 Last potentially related work creation: kasan_save_stack+0x33/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492 insert_work+0x45/0x370 kernel/workqueue.c:1556 __queue_work+0x554/0xdc0 kernel/workqueue.c:1717 call_timer_fn+0x159/0x380 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1746 [inline] __run_timers+0x364/0x890 kernel/time/timer.c:2022 run_timer_softirq+0x4d/0xb0 kernel/time/timer.c:2035 __do_softirq+0x253/0x67c kernel/softirq.c:553 Second to last potentially related work creation: kasan_save_stack+0x33/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492 insert_work+0x45/0x370 kernel/workqueue.c:1556 __queue_work+0x554/0xdc0 kernel/workqueue.c:1717 queue_work_on+0x5e/0x80 kernel/workqueue.c:1747 queue_work include/linux/workqueue.h:506 [inline] l2cap_conn_ready net/bluetooth/l2cap_core.c:1779 [inline] l2cap_connect_cfm+0x851/0xda0 net/bluetooth/l2cap_core.c:8283 hci_connect_cfm include/net/bluetooth/hci_core.h:1885 [inline] hci_remote_features_evt+0x40c/0x9e0 net/bluetooth/hci_event.c:3756 hci_event_func net/bluetooth/hci_event.c:7570 [inline] hci_event_packet+0x706/0xce0 net/bluetooth/hci_event.c:7622 hci_rx_work+0x3fe/0xcb0 net/bluetooth/hci_core.c:4094 process_one_work+0x929/0x1370 kernel/workqueue.c:2600 worker_thread+0xfb/0xe40 kernel/workqueue.c:2751 kthread+0x278/0x340 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:304 The buggy address belongs to the object at ffff888179785000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 0 bytes inside of freed 1024-byte region [ffff888179785000, ffff888179785400) The buggy address belongs to the physical page: page:ffffea0005e5e000 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888179784000 pfn:0x179780 head:ffffea0005e5e000 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x100000000010200(slab|head|node=0|zone=2) page_type: 0xffffffff() raw: 0100000000010200 ffff888100041dc0 ffffea0005ce5c00 dead000000000002 raw: ffff888179784000 000000008010000d 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1424, tgid 1424 (S50sshd), ts 9712625160, free_ts 9639642042 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x286/0x300 mm/page_alloc.c:1570 prep_new_page mm/page_alloc.c:1577 [inline] get_page_from_freelist+0x1131/0x3dc0 mm/page_alloc.c:3221 __alloc_pages+0x1d0/0x470 mm/page_alloc.c:4477 alloc_slab_page mm/slub.c:1862 [inline] allocate_slab+0x252/0x360 mm/slub.c:2009 new_slab mm/slub.c:2062 [inline] ___slab_alloc+0x7b5/0x1030 mm/slub.c:3215 __slab_alloc.constprop.0+0x4d/0x90 mm/slub.c:3314 __slab_alloc_node mm/slub.c:3367 [inline] slab_alloc_node mm/slub.c:3460 [inline] __kmem_cache_alloc_node+0x143/0x3a0 mm/slub.c:3509 __do_kmalloc_node mm/slab_common.c:984 [inline] __kmalloc+0x4c/0x160 mm/slab_common.c:998 kmalloc include/linux/slab.h:586 [inline] kzalloc include/linux/slab.h:703 [inline] tomoyo_init_log+0x11b8/0x1ee0 security/tomoyo/audit.c:275 tomoyo_supervisor+0x2a7/0xc40 security/tomoyo/common.c:2088 tomoyo_audit_env_log security/tomoyo/environ.c:36 [inline] tomoyo_env_perm+0x170/0x1e0 security/tomoyo/environ.c:63 tomoyo_environ security/tomoyo/domain.c:672 [inline] tomoyo_find_next_domain+0xf53/0x1db0 security/tomoyo/domain.c:879 tomoyo_bprm_check_security security/tomoyo/tomoyo.c:101 [inline] tomoyo_bprm_check_security+0x101/0x170 security/tomoyo/tomoyo.c:91 security_bprm_check+0x52/0x80 security/security.c:1102 search_binary_handler fs/exec.c:1726 [inline] exec_binprm fs/exec.c:1780 [inline] bprm_execve fs/exec.c:1855 [inline] bprm_execve+0x5f8/0x1440 fs/exec.c:1811 do_execveat_common.isra.0+0x4c0/0x6a0 fs/exec.c:1963 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1161 [inline] free_unref_page_prepare+0x5ac/0xc50 mm/page_alloc.c:2348 free_unref_page+0x33/0x350 mm/page_alloc.c:2443 __unfreeze_partials+0x1f3/0x210 mm/slub.c:2647 qlink_free mm/kasan/quarantine.c:166 [inline] qlist_free_all+0x6a/0x180 mm/kasan/quarantine.c:185 kasan_quarantine_reduce+0x181/0x1b0 mm/kasan/quarantine.c:292 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook mm/slab.h:762 [inline] slab_alloc_node mm/slub.c:3470 [inline] __kmem_cache_alloc_node+0x1ac/0x3a0 mm/slub.c:3509 kmalloc_trace+0x25/0xb0 mm/slab_common.c:1076 kmalloc include/linux/slab.h:582 [inline] tomoyo_print_header security/tomoyo/audit.c:156 [inline] tomoyo_init_log+0x198/0x1ee0 security/tomoyo/audit.c:255 tomoyo_supervisor+0x2a7/0xc40 security/tomoyo/common.c:2088 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline] tomoyo_path_permission security/tomoyo/file.c:587 [inline] tomoyo_path_permission+0x23d/0x330 security/tomoyo/file.c:573 tomoyo_check_open_permission+0x28b/0x2b0 security/tomoyo/file.c:777 security_file_open+0x52/0x90 security/security.c:2797 do_dentry_open+0x339/0x1210 fs/open.c:901 do_open fs/namei.c:3636 [inline] path_openat+0x18c2/0x27c0 fs/namei.c:3793 do_filp_open+0x1bc/0x400 fs/namei.c:3820 Memory state around the buggy address: ffff888179784f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888179784f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888179785000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888179785080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888179785100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================