ci starts bisection 2023-08-17 17:50:11.541473803 +0000 UTC m=+48651.025758257 bisecting cause commit starting from 47762f08697484cf0c2f2904b8c52375ed26c8cb building syzkaller on 74b106b66341c94da35974f62c072d91ca3bea28 ensuring issue is reproducible on original commit 47762f08697484cf0c2f2904b8c52375ed26c8cb testing commit 47762f08697484cf0c2f2904b8c52375ed26c8cb gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a36eccc41cf9c2fc13b465a0b6ffebe35bc28671a3845dc148f8dc9e773314b5 all runs: crashed: KASAN: slab-use-after-free Write in sco_chan_del representative crash: KASAN: slab-use-after-free Write in sco_chan_del, 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 47762f08697484cf0c2f2904b8c52375ed26c8cb gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1c839689f9cc0f075f866431591debfcef64e04a9cb0072787cf48c20efd03c8 all runs: crashed: KASAN: slab-use-after-free Write in sco_chan_del representative crash: KASAN: slab-use-after-free Write in sco_chan_del, 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=3883 full=7689 leaves diff=2018 split chunks (needed=false): <2018> split chunk #0 of len 2018 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 47762f08697484cf0c2f2904b8c52375ed26c8cb gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fab63a71ead4f64e8a1c5f31f41af692b2cf9fcc58fd9302726f4c6894b3a148 all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 47762f08697484cf0c2f2904b8c52375ed26c8cb gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d1809a5f07d3fc5c96ec2a32171fb393b77f443fba266c5c4d57df8411df5235 all runs: crashed: KASAN: slab-use-after-free Write in sco_chan_del representative crash: KASAN: slab-use-after-free Write in sco_chan_del, types: [KASAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 47762f08697484cf0c2f2904b8c52375ed26c8cb gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 83522fb69f568036b19afe96c0a83aadb31edcf0c3011b60e91d230a2d216cd9 all runs: crashed: KASAN: slab-use-after-free Write in sco_chan_del representative crash: KASAN: slab-use-after-free Write in sco_chan_del, types: [KASAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 47762f08697484cf0c2f2904b8c52375ed26c8cb gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9654baf73370778e8d4b5c8ecafc20ec49a4c095705b7dc2434e83b92684c8ab all runs: crashed: KASAN: slab-use-after-free Write in sco_chan_del representative crash: KASAN: slab-use-after-free Write in sco_chan_del, types: [KASAN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 47762f08697484cf0c2f2904b8c52375ed26c8cb gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 40a89747da281bd9e8215e4bbea956e0d558bf70c4c59e7bc53ac9ecdbff806f all runs: crashed: KASAN: slab-use-after-free Write in sco_chan_del representative crash: KASAN: slab-use-after-free Write in sco_chan_del, types: [KASAN] the chunk can be dropped minimized to 404 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 ADDRESS_MASKING ADFS_FS AFFS_FS AFS_FS AFS_FSCACHE AF_KCM AF_RXRPC AF_RXRPC_IPV6 AIX_PARTITION AMIGA_PARTITION ANDROID_BINDERFS ANDROID_BINDER_IPC ANON_VMA_NAME APERTURE_HELPERS AR5523 ARCH_ENABLE_MEMORY_HOTREMOVE ARCH_ENABLE_THP_MIGRATION ARCH_SUPPORTS_CRASH_DUMP ARCH_SUPPORTS_CRASH_HOTPLUG ARCH_SUPPORTS_KEXEC ARCH_SUPPORTS_KEXEC_BZIMAGE_VERIFY_SIG ARCH_SUPPORTS_KEXEC_FILE ARCH_SUPPORTS_KEXEC_JUMP ARCH_SUPPORTS_KEXEC_SIG ARCH_SUPPORTS_KEXEC_SIG_FORCE ARCH_WANT_OPTIMIZE_DAX_VMEMMAP ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP ARCH_WANT_PMD_MKWRITE ASM_MODVERSIONS 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_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 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_DEBUG_FS_ZONED BLK_DEV_BSGLIB BLK_DEV_FD 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_ICQ BLK_INLINE_ENCRYPTION BLK_INLINE_ENCRYPTION_FALLBACK BLK_WBT BLK_WBT_MQ BONDING BOOT_VESA_SUPPORT 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_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_HIDP BT_HS BT_INTEL BT_LE BT_LEDS BT_LE_L2CAP_ECRED BT_MSFTEXT BT_MTK BT_QCA BT_RFCOMM BT_RFCOMM_TTY BT_RTL BUFFER_HEAD 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_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_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_BQ24190 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_DT9812 COMEDI_NI_USB6501 COMEDI_USBDUX COMEDI_USBDUXFAST COMEDI_USBDUXSIGMA COMEDI_USB_DRIVERS COMEDI_VMK80XX COMPAT_NETLINK_MESSAGES COUNTER CRAMFS CRAMFS_BLOCKDEV CRAMFS_MTD CRASH_HOTPLUG 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_CFB CRYPTO_CHACHA20 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_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_HCTR2 CRYPTO_KDF800108_CTR 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_LRW CRYPTO_MICHAEL_MIC CRYPTO_NHPOLY1305 CRYPTO_NHPOLY1305_AVX2 CRYPTO_NHPOLY1305_SSE2 CRYPTO_OFB 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_SM2 CRYPTO_SM3 CRYPTO_SM3_AVX_X86_64 CRYPTO_SM4 CRYPTO_SM4_AESNI_AVX2_X86_64 CRYPTO_SM4_AESNI_AVX_X86_64 CRYPTO_SM4_GENERIC 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_XCTR CRYPTO_XTS CRYPTO_XXHASH CUSE CYPRESS_FIRMWARE DAMON DAMON_DBGFS DAMON_PADDR DAMON_RECLAIM DAMON_VADDR DAX DCA DCB DEFAULT_PFIFO_FAST DEVICE_MIGRATION DEVICE_PRIVATE DEV_COREDUMP DEV_DAX DIMLIB DLN2_ADC DMABUF_HEAPS DMABUF_HEAPS_CMA DMABUF_HEAPS_SYSTEM DMABUF_MOVE_NOTIFY DMA_CMA DMA_ENGINE_RAID DMA_NUMA_CMA 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 ENCRYPTED_KEYS EXTCON FSCACHE FUSE_FS GPIOLIB HAMRADIO IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_RTRS_CLIENT IOSCHED_BFQ ISDN ISDN_CAPI LIBNVDIMM MAC80211 MAC80211_LEDS MEDIA_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 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 [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed 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: 7ce5a2f3f3a8f986070d2af4cf76657df9b2c5ce779ef2e509b741d57c7923a7 all runs: OK false negative chance: 0.000 # git bisect start 47762f08697484cf0c2f2904b8c52375ed26c8cb 6995e2de6891c724bfeb2db33d7b87775f913ad1 Bisecting: 12531 revisions left to test after this (roughly 14 steps) [3d74f42c56db263e82ad96f8fe23aef38cdc071f] Merge existing fixes from asoc/for-6.5 into new branch testing commit 3d74f42c56db263e82ad96f8fe23aef38cdc071f gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a6722c3f193021e19bd284e7c13617f7751d1ea7ab7de0b75830481153496667 all runs: OK false negative chance: 0.000 # git bisect good 3d74f42c56db263e82ad96f8fe23aef38cdc071f Bisecting: 6731 revisions left to test after this (roughly 13 steps) [378297813921571f35018f4908cb08f6c0bfe3d4] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git testing commit 378297813921571f35018f4908cb08f6c0bfe3d4 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bdb36440b8c9550762cadefcec7fb5beb03148c9d8a83a0f7c60b549a26308f4 all runs: OK false negative chance: 0.000 # git bisect good 378297813921571f35018f4908cb08f6c0bfe3d4 Bisecting: 3459 revisions left to test after this (roughly 12 steps) [da87bd47a1b235947810ba169ba7f9bd3a9bc66f] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git testing commit da87bd47a1b235947810ba169ba7f9bd3a9bc66f gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 554c385f5eb536d2574ace4215e33c5394e211f9cc6615953ca9c9b74e6d3214 all runs: crashed: KASAN: slab-use-after-free Write in sco_chan_del representative crash: KASAN: slab-use-after-free Write in sco_chan_del, types: [KASAN] # git bisect bad da87bd47a1b235947810ba169ba7f9bd3a9bc66f Bisecting: 1637 revisions left to test after this (roughly 11 steps) [e654aaf2eafad7caef41a69ea0d404f3aa9939d2] Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git testing commit e654aaf2eafad7caef41a69ea0d404f3aa9939d2 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d0cd7bd31898865ca585e038b93623c7c7aa0ca623d19444cb8f6484240a4fa5 all runs: crashed: KASAN: slab-use-after-free Write in sco_chan_del representative crash: KASAN: slab-use-after-free Write in sco_chan_del, types: [KASAN] # git bisect bad e654aaf2eafad7caef41a69ea0d404f3aa9939d2 Bisecting: 816 revisions left to test after this (roughly 10 steps) [f5f2d9bb52f901929c04ea2585160f1b7317071d] ixgbevf: Remove unused function declarations testing commit f5f2d9bb52f901929c04ea2585160f1b7317071d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2a5b0b2b6d8b5dc966d7fa25a91c80a20389aaccfe8211b7ad3d84de03e5511c all runs: OK false negative chance: 0.000 # git bisect good f5f2d9bb52f901929c04ea2585160f1b7317071d Bisecting: 408 revisions left to test after this (roughly 9 steps) [528b2acf434bf4a0fb2969e5222fbe790b95f422] Bluetooth: msft: Fix error code in msft_cancel_address_filter_sync() testing commit 528b2acf434bf4a0fb2969e5222fbe790b95f422 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 17e2442edfb49af878e042c1262f653a2e08f118157c5e3d6f4c84e27e022c80 all runs: OK false negative chance: 0.000 # git bisect good 528b2acf434bf4a0fb2969e5222fbe790b95f422 Bisecting: 197 revisions left to test after this (roughly 8 steps) [b61e6a9da33c1c0b653935d3c69ab074a45468ba] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git testing commit b61e6a9da33c1c0b653935d3c69ab074a45468ba gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2f9668d6911949f79f0676b7c6b0e46f92b1cd219826b216e7574acad2b8188e all runs: OK false negative chance: 0.000 # git bisect good b61e6a9da33c1c0b653935d3c69ab074a45468ba Bisecting: 96 revisions left to test after this (roughly 7 steps) [4fa835496dd52bf1bb0c6952c10783936d21bd33] Merge branch 'spi-nor/next' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git testing commit 4fa835496dd52bf1bb0c6952c10783936d21bd33 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 391ffcbb069d9ff428f0b0a8e623a4c93ee86f1bce57193af3f42217c36c2530 all runs: crashed: KASAN: slab-use-after-free Write in sco_chan_del representative crash: KASAN: slab-use-after-free Write in sco_chan_del, types: [KASAN] # git bisect bad 4fa835496dd52bf1bb0c6952c10783936d21bd33 Bisecting: 57 revisions left to test after this (roughly 6 steps) [3549fecd10d24bcf9840ba2f7d6a0b5f57feed6f] mtd: rawnand: vf610_nfc: Do not check 0 for platform_get_irq() testing commit 3549fecd10d24bcf9840ba2f7d6a0b5f57feed6f gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 872021c5009e162f05096c87cf4ed2bdc9f3656c99f87786f122dd1c442c333e all runs: OK false negative chance: 0.000 # git bisect good 3549fecd10d24bcf9840ba2f7d6a0b5f57feed6f Bisecting: 33 revisions left to test after this (roughly 5 steps) [a04f6d6b98ed116299799949be71874100f8b55e] Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git testing commit a04f6d6b98ed116299799949be71874100f8b55e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 51095210397645c4ef6d4e41bcbaab7bf4171fff974b4aafe230129a1f322818 all runs: crashed: KASAN: slab-use-after-free Write in sco_chan_del representative crash: KASAN: slab-use-after-free Write in sco_chan_del, types: [KASAN] # git bisect bad a04f6d6b98ed116299799949be71874100f8b55e Bisecting: 11 revisions left to test after this (roughly 4 steps) [83eac028d768bd3da5924b97add7c7e2317afc61] net/mlx5: Configure MACsec steering for ingress RoCEv2 traffic testing commit 83eac028d768bd3da5924b97add7c7e2317afc61 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d75f3615f5a73819b81b2f7926efa7760ad2fa9972070d79282bf455d6a86a4b all runs: OK false negative chance: 0.000 # git bisect good 83eac028d768bd3da5924b97add7c7e2317afc61 Bisecting: 5 revisions left to test after this (roughly 3 steps) [f38a5adcbd53eee1b83b9439deb9b7d219c27319] dt-bindings: net: bluetooth: qualcomm: document WCN7850 chipset testing commit f38a5adcbd53eee1b83b9439deb9b7d219c27319 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7923816db3459c939c3409dfb69bdddd5bac89de3b122221ac1176143b3dfce0 all runs: crashed: KASAN: slab-use-after-free Write in sco_chan_del representative crash: KASAN: slab-use-after-free Write in sco_chan_del, types: [KASAN] # git bisect bad f38a5adcbd53eee1b83b9439deb9b7d219c27319 Bisecting: 2 revisions left to test after this (roughly 2 steps) [db4d87d4a68e5228ebfe3fb6a3e60b3e0b9a34ea] Bluetooth: btnxpuart: Improve inband Independent Reset handling testing commit db4d87d4a68e5228ebfe3fb6a3e60b3e0b9a34ea gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 144a4bcba2b568dc12d08d2e860cf2c1de745bbaba4bc435857ebde6f4764f2e all runs: OK false negative chance: 0.000 # git bisect good db4d87d4a68e5228ebfe3fb6a3e60b3e0b9a34ea Bisecting: 0 revisions left to test after this (roughly 1 step) [5109ebb80dad5374132ad87fecf5892d36f2fded] Bluetooth: hci_conn: Fix sending BT_HCI_CMD_LE_CREATE_CONN_CANCEL testing commit 5109ebb80dad5374132ad87fecf5892d36f2fded gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2de0b6d20ca399e476a36bef0e1c45ba23082f176bc111ec9ffd9ab12ac74858 all runs: crashed: KASAN: slab-use-after-free Write in sco_chan_del representative crash: KASAN: slab-use-after-free Write in sco_chan_del, types: [KASAN] # git bisect bad 5109ebb80dad5374132ad87fecf5892d36f2fded Bisecting: 0 revisions left to test after this (roughly 0 steps) [45c37c4e9c9aab5bb1cf5778d8e5ebd9f9ad820a] Bluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync testing commit 45c37c4e9c9aab5bb1cf5778d8e5ebd9f9ad820a gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 20ef62c507f3b93fc88fd9438d2712eaa82b89882986cb7e1c897f865930ca18 all runs: crashed: KASAN: slab-use-after-free Write in sco_chan_del representative crash: KASAN: slab-use-after-free Write in sco_chan_del, types: [KASAN] # git bisect bad 45c37c4e9c9aab5bb1cf5778d8e5ebd9f9ad820a 45c37c4e9c9aab5bb1cf5778d8e5ebd9f9ad820a is the first bad commit commit 45c37c4e9c9aab5bb1cf5778d8e5ebd9f9ad820a Author: Luiz Augusto von Dentz Date: Wed Aug 9 16:49:33 2023 -0700 Bluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync Use-after-free can occur in hci_disconnect_all_sync if a connection is deleted by concurrent processing of a controller event. To prevent this the code now tries to iterate over the list backwards to ensure the links are cleanup before its parents, also it no longer relies on a cursor, instead it always uses the last element since hci_abort_conn_sync is guaranteed to call hci_conn_del. UAF crash log: ================================================================== BUG: KASAN: slab-use-after-free in hci_set_powered_sync (net/bluetooth/hci_sync.c:5424) [bluetooth] Read of size 8 at addr ffff888009d9c000 by task kworker/u9:0/124 CPU: 0 PID: 124 Comm: kworker/u9:0 Tainted: G W 6.5.0-rc1+ #10 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-1.fc38 04/01/2014 Workqueue: hci0 hci_cmd_sync_work [bluetooth] Call Trace: dump_stack_lvl+0x5b/0x90 print_report+0xcf/0x670 ? __virt_addr_valid+0xdd/0x160 ? hci_set_powered_sync+0x2c9/0x4a0 [bluetooth] kasan_report+0xa6/0xe0 ? hci_set_powered_sync+0x2c9/0x4a0 [bluetooth] ? __pfx_set_powered_sync+0x10/0x10 [bluetooth] hci_set_powered_sync+0x2c9/0x4a0 [bluetooth] ? __pfx_hci_set_powered_sync+0x10/0x10 [bluetooth] ? __pfx_lock_release+0x10/0x10 ? __pfx_set_powered_sync+0x10/0x10 [bluetooth] hci_cmd_sync_work+0x137/0x220 [bluetooth] process_one_work+0x526/0x9d0 ? __pfx_process_one_work+0x10/0x10 ? __pfx_do_raw_spin_lock+0x10/0x10 ? mark_held_locks+0x1a/0x90 worker_thread+0x92/0x630 ? __pfx_worker_thread+0x10/0x10 kthread+0x196/0x1e0 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x2c/0x50 Allocated by task 1782: kasan_save_stack+0x33/0x60 kasan_set_track+0x25/0x30 __kasan_kmalloc+0x8f/0xa0 hci_conn_add+0xa5/0xa80 [bluetooth] hci_bind_cis+0x881/0x9b0 [bluetooth] iso_connect_cis+0x121/0x520 [bluetooth] iso_sock_connect+0x3f6/0x790 [bluetooth] __sys_connect+0x109/0x130 __x64_sys_connect+0x40/0x50 do_syscall_64+0x60/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 Freed by task 695: kasan_save_stack+0x33/0x60 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2b/0x50 __kasan_slab_free+0x10a/0x180 __kmem_cache_free+0x14d/0x2e0 device_release+0x5d/0xf0 kobject_put+0xdf/0x270 hci_disconn_complete_evt+0x274/0x3a0 [bluetooth] hci_event_packet+0x579/0x7e0 [bluetooth] hci_rx_work+0x287/0xaa0 [bluetooth] process_one_work+0x526/0x9d0 worker_thread+0x92/0x630 kthread+0x196/0x1e0 ret_from_fork+0x2c/0x50 ================================================================== Fixes: 182ee45da083 ("Bluetooth: hci_sync: Rework hci_suspend_notifier") Signed-off-by: Pauli Virtanen Signed-off-by: Luiz Augusto von Dentz net/bluetooth/hci_sync.c | 55 ++++++++++++++++++++++++++++++------------------ 1 file changed, 35 insertions(+), 20 deletions(-) accumulated error probability: 0.00 culprit signature: 20ef62c507f3b93fc88fd9438d2712eaa82b89882986cb7e1c897f865930ca18 parent signature: 144a4bcba2b568dc12d08d2e860cf2c1de745bbaba4bc435857ebde6f4764f2e revisions tested: 23, total time: 10h48m14.607809701s (build: 6h56m57.954444897s, test: 3h22m7.581215773s) first bad commit: 45c37c4e9c9aab5bb1cf5778d8e5ebd9f9ad820a Bluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync recipients (to): ["luiz.von.dentz@intel.com" "pav@iki.fi"] recipients (cc): [] crash: KASAN: slab-use-after-free Write in sco_chan_del ================================================================== BUG: KASAN: slab-use-after-free in instrument_atomic_read_write include/linux/instrumented.h:96 [inline] BUG: KASAN: slab-use-after-free in atomic_dec_and_test include/linux/atomic/atomic-instrumented.h:1375 [inline] BUG: KASAN: slab-use-after-free in hci_conn_drop include/net/bluetooth/hci_core.h:1497 [inline] BUG: KASAN: slab-use-after-free in sco_chan_del+0xe4/0x460 net/bluetooth/sco.c:171 Write of size 4 at addr ffff888108788010 by task syz-executor.3/8006 CPU: 0 PID: 8006 Comm: syz-executor.3 Not tainted 6.5.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x3d/0x60 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 check_region_inline mm/kasan/generic.c:181 [inline] kasan_check_range+0xef/0x190 mm/kasan/generic.c:187 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_dec_and_test include/linux/atomic/atomic-instrumented.h:1375 [inline] hci_conn_drop include/net/bluetooth/hci_core.h:1497 [inline] sco_chan_del+0xe4/0x460 net/bluetooth/sco.c:171 sco_sock_close net/bluetooth/sco.c:469 [inline] sco_sock_release+0x65/0x280 net/bluetooth/sco.c:1246 __sock_release+0x9b/0x250 net/socket.c:657 sock_close+0x13/0x20 net/socket.c:1399 __fput+0x339/0xa20 fs/file_table.c:384 task_work_run+0x114/0x1f0 kernel/task_work.c:179 get_signal+0x194/0x1f00 kernel/signal.c:2657 arch_do_signal_or_restart+0x89/0x5f0 arch/x86/kernel/signal.c:308 exit_to_user_mode_loop kernel/entry/common.c:168 [inline] exit_to_user_mode_prepare+0xc3/0x150 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x16/0x30 kernel/entry/common.c:297 do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f403e47cae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f403f1920c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: fffffffffffffffc RBX: 00007f403e59bf80 RCX: 00007f403e47cae9 RDX: 0000000000000008 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007f403e4c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007f403e59bf80 R15: 00007ffd1b7e2048 Allocated by task 7937: kasan_save_stack+0x33/0x50 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+0xa2/0xb0 mm/kasan/common.c:383 kmalloc include/linux/slab.h:582 [inline] kzalloc include/linux/slab.h:703 [inline] hci_conn_add+0xad/0x14f0 net/bluetooth/hci_conn.c:952 hci_connect_sco+0x2be/0xb70 net/bluetooth/hci_conn.c:1672 sco_connect net/bluetooth/sco.c:266 [inline] sco_sock_connect+0x358/0x8e0 net/bluetooth/sco.c:591 __sys_connect+0xfd/0x120 net/socket.c:2023 __do_sys_connect net/socket.c:2033 [inline] __se_sys_connect net/socket.c:2030 [inline] __x64_sys_connect+0x6d/0xb0 net/socket.c:2030 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 1248: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x15e/0x1b0 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 device_release+0x97/0x1a0 drivers/base/core.c:2484 kobject_cleanup lib/kobject.c:682 [inline] kobject_release lib/kobject.c:713 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put.part.0+0x167/0x400 lib/kobject.c:730 hci_conn_unlink+0x5d0/0x730 net/bluetooth/hci_conn.c:1071 hci_conn_del+0x4f/0xb70 net/bluetooth/hci_conn.c:1097 hci_abort_conn_sync+0x351/0x870 net/bluetooth/hci_sync.c:5417 hci_cmd_sync_work+0x173/0x340 net/bluetooth/hci_sync.c:306 process_one_work+0x922/0x1370 kernel/workqueue.c:2600 worker_thread+0xfb/0xe40 kernel/workqueue.c:2751 kthread+0x278/0x330 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 Last potentially related work creation: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492 insert_work+0x45/0x360 kernel/workqueue.c:1556 __queue_work+0x554/0xdc0 kernel/workqueue.c:1717 __queue_delayed_work kernel/workqueue.c:1867 [inline] queue_delayed_work_on+0x18d/0x1e0 kernel/workqueue.c:1903 queue_delayed_work include/linux/workqueue.h:521 [inline] hci_conn_drop include/net/bluetooth/hci_core.h:1523 [inline] hci_conn_drop include/net/bluetooth/hci_core.h:1493 [inline] sco_chan_del+0x1aa/0x460 net/bluetooth/sco.c:171 sco_sock_close net/bluetooth/sco.c:469 [inline] sco_sock_release+0x65/0x280 net/bluetooth/sco.c:1246 __sock_release+0x9b/0x250 net/socket.c:657 sock_close+0x13/0x20 net/socket.c:1399 __fput+0x339/0xa20 fs/file_table.c:384 task_work_run+0x114/0x1f0 kernel/task_work.c:179 get_signal+0x194/0x1f00 kernel/signal.c:2657 arch_do_signal_or_restart+0x89/0x5f0 arch/x86/kernel/signal.c:308 exit_to_user_mode_loop kernel/entry/common.c:168 [inline] exit_to_user_mode_prepare+0xc3/0x150 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x16/0x30 kernel/entry/common.c:297 do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff888108788000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 16 bytes inside of freed 4096-byte region [ffff888108788000, ffff888108789000) The buggy address belongs to the physical page: page:ffffea000421e200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x108788 head:ffffea000421e200 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x100000000010200(slab|head|node=0|zone=2) page_type: 0xffffffff() raw: 0100000000010200 ffff888100042140 ffffea0005f72400 dead000000000002 raw: 0000000000000000 0000000000040004 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 0x1d2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 3975, tgid 3975 (modprobe), ts 68237910009, free_ts 68064873813 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x281/0x2f0 mm/page_alloc.c:1570 prep_new_page mm/page_alloc.c:1577 [inline] get_page_from_freelist+0x1131/0x3d90 mm/page_alloc.c:3221 __alloc_pages+0x1d0/0x470 mm/page_alloc.c:4477 alloc_slab_page mm/slub.c:1862 [inline] allocate_slab+0x24e/0x360 mm/slub.c:2009 new_slab mm/slub.c:2062 [inline] ___slab_alloc+0x7a7/0x1000 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+0x143/0x390 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] tomoyo_realpath_from_path+0xaf/0x7a0 security/tomoyo/realpath.c:251 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_check_open_permission+0x220/0x2b0 security/tomoyo/file.c:771 security_file_open+0x4f/0x80 security/security.c:2797 do_dentry_open+0x339/0x1200 fs/open.c:901 do_open fs/namei.c:3636 [inline] path_openat+0x18b8/0x27c0 fs/namei.c:3793 do_filp_open+0x1bc/0x400 fs/namei.c:3820 do_sys_openat2+0x12c/0x170 fs/open.c:1407 do_sys_open fs/open.c:1422 [inline] __do_sys_openat fs/open.c:1438 [inline] __se_sys_openat fs/open.c:1433 [inline] __x64_sys_openat+0x134/0x1d0 fs/open.c:1433 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/0xcf0 mm/page_alloc.c:2348 free_unref_page+0x33/0x350 mm/page_alloc.c:2443 __unfreeze_partials+0x1f1/0x210 mm/slub.c:2647 qlink_free mm/kasan/quarantine.c:166 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185 kasan_quarantine_reduce+0x17d/0x1b0 mm/kasan/quarantine.c:292 __kasan_slab_alloc+0x65/0x90 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] slab_alloc mm/slub.c:3478 [inline] __kmem_cache_alloc_lru mm/slub.c:3485 [inline] kmem_cache_alloc+0x1a1/0x3d0 mm/slub.c:3494 vm_area_alloc+0x1e/0x1e0 kernel/fork.c:485 mmap_region+0x294/0x1f60 mm/mmap.c:2730 do_mmap+0x61a/0xd30 mm/mmap.c:1363 vm_mmap_pgoff+0x16d/0x340 mm/util.c:543 ksys_mmap_pgoff+0x2e4/0x430 mm/mmap.c:1409 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff888108787f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888108787f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888108788000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888108788080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888108788100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================