ci starts bisection 2023-09-22 03:39:26.455975123 +0000 UTC m=+750910.475099131 bisecting cause commit starting from bd6c11bc43c496cddfc6cf603b5d45365606dbd5 building syzkaller on 696ea0d2f4fdaa17db929e152edba19bf7666d84 ensuring issue is reproducible on original commit bd6c11bc43c496cddfc6cf603b5d45365606dbd5 testing commit bd6c11bc43c496cddfc6cf603b5d45365606dbd5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d451f80d4bedbecdf2b70a000f431f0dd677aef9444d65c73f19afa2767e3780 all runs: crashed: KASAN: slab-use-after-free Write in sco_conn_del representative crash: KASAN: slab-use-after-free Write in sco_conn_del, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit bd6c11bc43c496cddfc6cf603b5d45365606dbd5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 123a9fc7ada37d6bea00f0dab397568465ea419456385dffca92fcd51409d972 all runs: crashed: KASAN: slab-use-after-free Write in sco_conn_del representative crash: KASAN: slab-use-after-free Write in sco_conn_del, types: [KASAN] the bug reproduces without the instrumentation disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=3883 full=7650 leaves diff=2000 split chunks (needed=false): <2000> split chunk #0 of len 2000 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 bd6c11bc43c496cddfc6cf603b5d45365606dbd5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 693e185fea73cc3d253ae6d6655d8cc56b8790ee9c0a26d14a4b54ce2dfb1ce5 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 bd6c11bc43c496cddfc6cf603b5d45365606dbd5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7bb98fc2e0bb2e05a2b0b960eb1e8ee6adacc6391823ce1cdd87c64c80ebddbb all runs: crashed: KASAN: slab-use-after-free Write in sco_conn_del representative crash: KASAN: slab-use-after-free Write in sco_conn_del, types: [KASAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing commit bd6c11bc43c496cddfc6cf603b5d45365606dbd5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 643036c84682226a99f45e6ce0ef1d07710c8516b82e177759ecd20e13c3043d all runs: crashed: KASAN: slab-use-after-free Write in sco_conn_del representative crash: KASAN: slab-use-after-free Write in sco_conn_del, types: [KASAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit bd6c11bc43c496cddfc6cf603b5d45365606dbd5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 747caf06883ed46b28ce7226a229cf8d1480a31e784499a96d0e09148d760af7 run #0: crashed: KASAN: slab-use-after-free Write in sco_conn_del run #1: crashed: KASAN: slab-use-after-free Write in sco_conn_del run #2: crashed: KASAN: slab-use-after-free Write in sco_conn_del run #3: crashed: KASAN: slab-use-after-free Write in sco_conn_del run #4: crashed: KASAN: slab-use-after-free Write in sco_conn_del run #5: crashed: KASAN: slab-use-after-free Write in sco_conn_del run #6: crashed: KASAN: slab-use-after-free Write in sco_conn_del run #7: crashed: KASAN: slab-use-after-free Write in sco_conn_del run #8: crashed: KASAN: slab-use-after-free Write in sco_conn_del run #9: OK representative crash: KASAN: slab-use-after-free Write in sco_conn_del, types: [KASAN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit bd6c11bc43c496cddfc6cf603b5d45365606dbd5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ef3201f9c73c4fd5be1470325daf4341fc6e0c18cd7f83660569205accada6d5 all runs: crashed: KASAN: slab-use-after-free Write in sco_conn_del representative crash: KASAN: slab-use-after-free Write in sco_conn_del, types: [KASAN] the chunk can be dropped minimized to 400 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 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_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_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 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 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 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_BOCHS DRM_BUDDY DRM_CIRRUS_QEMU ENCRYPTED_KEYS EXTCON FSCACHE FUSE_FS GPIOLIB HAMRADIO HID_DRAGONRISE 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 [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed picked [v6.5 v6.4 v6.3 v6.1 v5.19 v5.17 v5.15 v5.13 v5.10 v5.7 v5.4 v5.1 v4.19] out of 28 release tags testing release v6.5 testing commit 2dde18cd1d8fac735875f2e4987f11817cc0bc2c gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 730515f571f7c86d251e63c4bbb3c764674a22224b4cf9c32f28b41a7ef0180d all runs: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout representative crash: KASAN: slab-use-after-free Write in sco_sock_timeout, types: [KASAN] 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: 6bcb2ce7adc54cddf87f8668ec8a19cd1ffc5a239a5255047935d2bd859ce1d0 run #0: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #1: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #2: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #3: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #4: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #5: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #6: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #7: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #8: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #9: crashed: KASAN: slab-use-after-free Write in sco_conn_del representative crash: KASAN: slab-use-after-free Write in sco_sock_timeout, types: [KASAN] testing release v6.3 testing commit 457391b0380335d5e9a5babdec90ac53928b23b4 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d17d0d3bcddf153053ebead6c51460f385127ad3e798aafc6baaf25fd7f384b4 all runs: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout representative crash: KASAN: slab-use-after-free Write in sco_sock_timeout, types: [KASAN] testing release v6.1 testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7c7acfa09cefdaae1f9d30bea2ff25bd7531b65212cb999ea99783d0c0c8e1f0 all runs: OK false negative chance: 0.000 # git bisect start 457391b0380335d5e9a5babdec90ac53928b23b4 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 Bisecting: 16238 revisions left to test after this (roughly 14 steps) [62be69397e53ab14f607698bb41343ce576713e8] Merge tag 'wireless-next-2023-01-23' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next testing commit 62be69397e53ab14f607698bb41343ce576713e8 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bebafd6dbb77698684451b2d2fd8a69637415ff46d2078429ae5418763df6dac all runs: OK false negative chance: 0.000 # git bisect good 62be69397e53ab14f607698bb41343ce576713e8 Bisecting: 7399 revisions left to test after this (roughly 13 steps) [a5c95ca18a98d742d0a4a04063c32556b5b66378] Merge tag 'drm-next-2023-02-23' of git://anongit.freedesktop.org/drm/drm testing commit a5c95ca18a98d742d0a4a04063c32556b5b66378 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: eb39afd573d8f134d4675c1317f57f6e75a901f1750cc4e838706b40fcbc8edb all runs: OK false negative chance: 0.000 # git bisect good a5c95ca18a98d742d0a4a04063c32556b5b66378 Bisecting: 3619 revisions left to test after this (roughly 12 steps) [1ec35eadc3b448c91a6b763371a7073444e95f9d] Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux testing commit 1ec35eadc3b448c91a6b763371a7073444e95f9d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0b078ed4b61092d18fe7edc0363df6e3044c9f82d1bfff39d855f6461a53ce28 all runs: OK false negative chance: 0.000 # git bisect good 1ec35eadc3b448c91a6b763371a7073444e95f9d Bisecting: 1808 revisions left to test after this (roughly 11 steps) [3b11717f95b1880b9cab4b90bbaf61268e6bda2b] Merge tag 'vfs.misc.v6.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping testing commit 3b11717f95b1880b9cab4b90bbaf61268e6bda2b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c8af91d40445e0a0cdacf4bc6a04b7b5351e5cca67491588acd4199272d9d7bb all runs: OK false negative chance: 0.000 # git bisect good 3b11717f95b1880b9cab4b90bbaf61268e6bda2b Bisecting: 904 revisions left to test after this (roughly 10 steps) [fb5015bc8b733323b58f015b88e4f316010ec856] docs: kvm: x86: Fix broken field list testing commit fb5015bc8b733323b58f015b88e4f316010ec856 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ef536cc9f96b10a2e70cecf3ff00866795602768d0d2183ef11fece353d4e23b all runs: OK false negative chance: 0.000 # git bisect good fb5015bc8b733323b58f015b88e4f316010ec856 Bisecting: 455 revisions left to test after this (roughly 9 steps) [aa46fe36bbac623d58817eb12ed0222d88fe6b16] Merge tag 'tty-6.3-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty testing commit aa46fe36bbac623d58817eb12ed0222d88fe6b16 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 961dad60d109d2ef3e6ce54102b3c7a3942846310b155e57ae89926780c720a6 all runs: OK false negative chance: 0.000 # git bisect good aa46fe36bbac623d58817eb12ed0222d88fe6b16 Bisecting: 228 revisions left to test after this (roughly 8 steps) [9772f14f557de9d4056212c84a0a4f64b7b09f31] Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi testing commit 9772f14f557de9d4056212c84a0a4f64b7b09f31 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c6326f00366c581712abfaa814f632f71d6cff5b3a349ae5905a3584a0d0465f run #0: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #1: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #2: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #3: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #4: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #5: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #6: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #7: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #8: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #9: OK representative crash: KASAN: slab-use-after-free Write in sco_sock_timeout, types: [KASAN] # git bisect bad 9772f14f557de9d4056212c84a0a4f64b7b09f31 Bisecting: 112 revisions left to test after this (roughly 7 steps) [4413ad01e27eb989f4b19bb5b038328c220a383d] Merge tag 'devicetree-fixes-for-6.2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux testing commit 4413ad01e27eb989f4b19bb5b038328c220a383d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f17c97d04efd3682f205ce756e873e529c41ce69e1e1b295d5aabbae6a68e184 all runs: OK false negative chance: 0.000 # git bisect good 4413ad01e27eb989f4b19bb5b038328c220a383d Bisecting: 55 revisions left to test after this (roughly 6 steps) [b65ef48c95b95960e91f9f3c45e6d079be00f0f3] Merge branch 'XDP-hints: change RX-hash kfunc bpf_xdp_metadata_rx_hash' testing commit b65ef48c95b95960e91f9f3c45e6d079be00f0f3 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0eae0acb73d53f5e9c4ae3881e348774be710bdf120e56889f326187c625698a run #0: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #1: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #2: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #3: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #4: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #5: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #6: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #7: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #8: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #9: crashed: kernel panic: KASAN: panic_on_warn set ... representative crash: KASAN: slab-use-after-free Write in sco_sock_timeout, types: [KASAN] # git bisect bad b65ef48c95b95960e91f9f3c45e6d079be00f0f3 Bisecting: 27 revisions left to test after this (roughly 5 steps) [160c13175e392961fd18a9fdb89e5425b3ac7099] Merge tag 'for-net-2023-04-10' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth testing commit 160c13175e392961fd18a9fdb89e5425b3ac7099 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9fb4fa94b28c160c9462a96d0a7527711b6392453a470a24a8fb2498ee074e3e all runs: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout representative crash: KASAN: slab-use-after-free Write in sco_sock_timeout, types: [KASAN] # git bisect bad 160c13175e392961fd18a9fdb89e5425b3ac7099 Bisecting: 14 revisions left to test after this (roughly 4 steps) [5cc33f139e11b893ff6dc60d8a0ae865a65521ac] r8152: Add __GFP_NOWARN to big allocations testing commit 5cc33f139e11b893ff6dc60d8a0ae865a65521ac gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b61388ba5f25bbbc1f396abb47bb47171e65938f8ac1ccb883e991a0d9f101cb all runs: OK false negative chance: 0.000 # git bisect good 5cc33f139e11b893ff6dc60d8a0ae865a65521ac Bisecting: 7 revisions left to test after this (roughly 3 steps) [975abc0c90fc485ff9b4a6afa475c3b1398d5d47] Bluetooth: SCO: Fix possible circular locking dependency sco_sock_getsockopt testing commit 975abc0c90fc485ff9b4a6afa475c3b1398d5d47 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e2872b9b0142d59fbd32c3cce8eeb4ae4c141fff5fc63ab7a643e557ce84e9f4 run #0: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #1: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #2: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #3: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #4: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #5: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #6: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #7: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout run #8: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor4098778267" "root@10.128.1.187:./syz-executor4098778267"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.187, user root, command sftp OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.187 [10.128.1.187] port 22. debug1: connect to address 10.128.1.187 port 22: Connection timed out ssh: connect to host 10.128.1.187 port 22: Connection timed out scp: Connection closed run #9: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1896237061" "root@10.128.10.7:./syz-executor1896237061"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.7, user root, command sftp OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.7 [10.128.10.7] port 22. debug1: connect to address 10.128.10.7 port 22: Connection timed out ssh: connect to host 10.128.10.7 port 22: Connection timed out scp: Connection closed representative crash: KASAN: slab-use-after-free Write in sco_sock_timeout, types: [KASAN] # git bisect bad 975abc0c90fc485ff9b4a6afa475c3b1398d5d47 Bisecting: 3 revisions left to test after this (roughly 2 steps) [c95930abd687fcd1aa040dc4fe90dff947916460] Bluetooth: Fix race condition in hidp_session_thread testing commit c95930abd687fcd1aa040dc4fe90dff947916460 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 221d59aa475a2206d45592acb5ffcf6a827d0578c0cb7df5e27afa4310af6aa3 all runs: OK false negative chance: 0.000 # git bisect good c95930abd687fcd1aa040dc4fe90dff947916460 Bisecting: 1 revision left to test after this (roughly 1 step) [b76abe4648c1acc791a207e7c08d1719eb9f4ea8] bluetooth: btbcm: Fix logic error in forming the board name. testing commit b76abe4648c1acc791a207e7c08d1719eb9f4ea8 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4db6f7dea47310225a9b1b42af529fccc25abd62cf75e62f728b72ad5dbebeda all runs: OK false negative chance: 0.000 # git bisect good b76abe4648c1acc791a207e7c08d1719eb9f4ea8 Bisecting: 0 revisions left to test after this (roughly 0 steps) [9a8ec9e8ebb5a7c0cfbce2d6b4a6b67b2b78e8f3] Bluetooth: SCO: Fix possible circular locking dependency on sco_connect_cfm testing commit 9a8ec9e8ebb5a7c0cfbce2d6b4a6b67b2b78e8f3 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 24eec7e78fe807a0e4e08efaaabd0a224e615a93a69c3f6443bd3bfc22d49b8c all runs: crashed: KASAN: slab-use-after-free Write in sco_sock_timeout representative crash: KASAN: slab-use-after-free Write in sco_sock_timeout, types: [KASAN] # git bisect bad 9a8ec9e8ebb5a7c0cfbce2d6b4a6b67b2b78e8f3 9a8ec9e8ebb5a7c0cfbce2d6b4a6b67b2b78e8f3 is the first bad commit commit 9a8ec9e8ebb5a7c0cfbce2d6b4a6b67b2b78e8f3 Author: Luiz Augusto von Dentz Date: Thu Mar 30 14:15:50 2023 -0700 Bluetooth: SCO: Fix possible circular locking dependency on sco_connect_cfm This attempts to fix the following trace: ====================================================== WARNING: possible circular locking dependency detected 6.3.0-rc2-g0b93eeba4454 #4703 Not tainted ------------------------------------------------------ kworker/u3:0/46 is trying to acquire lock: ffff888001fd9130 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}, at: sco_connect_cfm+0x118/0x4a0 but task is already holding lock: ffffffff831e3340 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_sync_conn_complete_evt+0x1ad/0x3d0 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (hci_cb_list_lock){+.+.}-{3:3}: __mutex_lock+0x13b/0xcc0 hci_sync_conn_complete_evt+0x1ad/0x3d0 hci_event_packet+0x55c/0x7c0 hci_rx_work+0x34c/0xa00 process_one_work+0x575/0x910 worker_thread+0x89/0x6f0 kthread+0x14e/0x180 ret_from_fork+0x2b/0x50 -> #1 (&hdev->lock){+.+.}-{3:3}: __mutex_lock+0x13b/0xcc0 sco_sock_connect+0xfc/0x630 __sys_connect+0x197/0x1b0 __x64_sys_connect+0x37/0x50 do_syscall_64+0x42/0x90 entry_SYSCALL_64_after_hwframe+0x70/0xda -> #0 (sk_lock-AF_BLUETOOTH-BTPROTO_SCO){+.+.}-{0:0}: __lock_acquire+0x18cc/0x3740 lock_acquire+0x151/0x3a0 lock_sock_nested+0x32/0x80 sco_connect_cfm+0x118/0x4a0 hci_sync_conn_complete_evt+0x1e6/0x3d0 hci_event_packet+0x55c/0x7c0 hci_rx_work+0x34c/0xa00 process_one_work+0x575/0x910 worker_thread+0x89/0x6f0 kthread+0x14e/0x180 ret_from_fork+0x2b/0x50 other info that might help us debug this: Chain exists of: sk_lock-AF_BLUETOOTH-BTPROTO_SCO --> &hdev->lock --> hci_cb_list_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(hci_cb_list_lock); lock(&hdev->lock); lock(hci_cb_list_lock); lock(sk_lock-AF_BLUETOOTH-BTPROTO_SCO); *** DEADLOCK *** 4 locks held by kworker/u3:0/46: #0: ffff8880028d1130 ((wq_completion)hci0#2){+.+.}-{0:0}, at: process_one_work+0x4c0/0x910 #1: ffff8880013dfde0 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x4c0/0x910 #2: ffff8880025d8070 (&hdev->lock){+.+.}-{3:3}, at: hci_sync_conn_complete_evt+0xa6/0x3d0 #3: ffffffffb79e3340 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_sync_conn_complete_evt+0x1ad/0x3d0 Signed-off-by: Luiz Augusto von Dentz net/bluetooth/sco.c | 69 +++++++++++++++++++++++++++++++---------------------- 1 file changed, 40 insertions(+), 29 deletions(-) accumulated error probability: 0.00 culprit signature: 24eec7e78fe807a0e4e08efaaabd0a224e615a93a69c3f6443bd3bfc22d49b8c parent signature: 4db6f7dea47310225a9b1b42af529fccc25abd62cf75e62f728b72ad5dbebeda revisions tested: 26, total time: 8h21m0.394433451s (build: 3h35m1.683331465s, test: 4h28m29.968046705s) first bad commit: 9a8ec9e8ebb5a7c0cfbce2d6b4a6b67b2b78e8f3 Bluetooth: SCO: Fix possible circular locking dependency on sco_connect_cfm recipients (to): ["davem@davemloft.net" "edumazet@google.com" "johan.hedberg@gmail.com" "kuba@kernel.org" "linux-bluetooth@vger.kernel.org" "luiz.dentz@gmail.com" "luiz.von.dentz@intel.com" "marcel@holtmann.org" "netdev@vger.kernel.org" "pabeni@redhat.com"] recipients (cc): ["linux-kernel@vger.kernel.org"] crash: KASAN: slab-use-after-free Write in sco_sock_timeout ================================================================== BUG: KASAN: slab-use-after-free in instrument_atomic_read_write include/linux/instrumented.h:102 [inline] BUG: KASAN: slab-use-after-free in atomic_fetch_add_relaxed include/linux/atomic/atomic-instrumented.h:116 [inline] BUG: KASAN: slab-use-after-free in __refcount_add include/linux/refcount.h:193 [inline] BUG: KASAN: slab-use-after-free in __refcount_inc include/linux/refcount.h:250 [inline] BUG: KASAN: slab-use-after-free in refcount_inc include/linux/refcount.h:267 [inline] BUG: KASAN: slab-use-after-free in sock_hold include/net/sock.h:775 [inline] BUG: KASAN: slab-use-after-free in sco_sock_timeout+0x57/0x1f0 net/bluetooth/sco.c:89 Write of size 4 at addr ffff88817da94080 by task kworker/0:1/38 CPU: 0 PID: 38 Comm: kworker/0:1 Not tainted 6.3.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Workqueue: events sco_sock_timeout 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:319 [inline] print_report+0xc4/0x620 mm/kasan/report.c:430 kasan_report+0xdc/0x110 mm/kasan/report.c:536 check_region_inline mm/kasan/generic.c:181 [inline] kasan_check_range+0x143/0x190 mm/kasan/generic.c:187 instrument_atomic_read_write include/linux/instrumented.h:102 [inline] atomic_fetch_add_relaxed include/linux/atomic/atomic-instrumented.h:116 [inline] __refcount_add include/linux/refcount.h:193 [inline] __refcount_inc include/linux/refcount.h:250 [inline] refcount_inc include/linux/refcount.h:267 [inline] sock_hold include/net/sock.h:775 [inline] sco_sock_timeout+0x57/0x1f0 net/bluetooth/sco.c:89 process_one_work+0x850/0x1270 kernel/workqueue.c:2390 worker_thread+0xf1/0xdd0 kernel/workqueue.c:2537 kthread+0x22c/0x2b0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Allocated by task 2326: 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 kasan_kmalloc include/linux/kasan.h:196 [inline] __do_kmalloc_node mm/slab_common.c:967 [inline] __kmalloc+0x5d/0x160 mm/slab_common.c:980 kmalloc include/linux/slab.h:584 [inline] sk_prot_alloc+0x14f/0x210 net/core/sock.c:2040 sk_alloc+0x30/0x580 net/core/sock.c:2093 sco_sock_alloc.constprop.0+0x22/0x2f0 net/bluetooth/sco.c:506 sco_sock_create+0xb3/0x160 net/bluetooth/sco.c:545 bt_sock_create+0x11e/0x250 net/bluetooth/af_bluetooth.c:132 __sock_create+0x1fd/0x460 net/socket.c:1545 sock_create net/socket.c:1596 [inline] __sys_socket_create net/socket.c:1633 [inline] __sys_socket+0x114/0x1b0 net/socket.c:1661 __do_sys_socket net/socket.c:1674 [inline] __se_sys_socket net/socket.c:1672 [inline] __x64_sys_socket+0x6d/0xb0 net/socket.c:1672 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 2327: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2e/0x40 mm/kasan/generic.c:521 ____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:1781 [inline] slab_free_freelist_hook+0x10b/0x1e0 mm/slub.c:1807 slab_free mm/slub.c:3787 [inline] __kmem_cache_free+0xab/0x320 mm/slub.c:3800 sk_prot_free net/core/sock.c:2076 [inline] __sk_destruct+0x4a5/0x6b0 net/core/sock.c:2168 sco_sock_release+0x130/0x280 net/bluetooth/sco.c:1275 __sock_release+0xbb/0x280 net/socket.c:653 sock_close+0x13/0x20 net/socket.c:1395 __fput+0x1e3/0x9b0 fs/file_table.c:321 task_work_run+0x114/0x1f0 kernel/task_work.c:179 get_signal+0x194/0x1f00 kernel/signal.c:2635 arch_do_signal_or_restart+0x89/0x5f0 arch/x86/kernel/signal.c:306 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 ffff88817da94000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 128 bytes inside of freed 2048-byte region [ffff88817da94000, ffff88817da94800) The buggy address belongs to the physical page: page:ffffea0005f6a400 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88817da96000 pfn:0x17da90 head:ffffea0005f6a400 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x100000000010200(slab|head|node=0|zone=2) raw: 0100000000010200 ffff888100042000 ffffea000438b210 ffffea0004239c10 raw: ffff88817da96000 0000000000080007 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1277, tgid 1277 (klogd), ts 7386005285, free_ts 6062958026 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x281/0x2f0 mm/page_alloc.c:2546 prep_new_page mm/page_alloc.c:2553 [inline] get_page_from_freelist+0xc0a/0x41a0 mm/page_alloc.c:4326 __alloc_pages+0x1d0/0x470 mm/page_alloc.c:5592 alloc_slab_page mm/slub.c:1851 [inline] allocate_slab+0x24e/0x360 mm/slub.c:1998 new_slab mm/slub.c:2051 [inline] ___slab_alloc+0x7e8/0xf30 mm/slub.c:3193 __slab_alloc.constprop.0+0x4d/0x90 mm/slub.c:3292 __slab_alloc_node mm/slub.c:3345 [inline] slab_alloc_node mm/slub.c:3442 [inline] __kmem_cache_alloc_node+0x144/0x390 mm/slub.c:3491 kmalloc_trace+0x25/0xb0 mm/slab_common.c:1061 kmalloc include/linux/slab.h:580 [inline] syslog_print+0xf0/0x460 kernel/printk/printk.c:1562 do_syslog+0x212/0x3c0 kernel/printk/printk.c:1741 __do_sys_syslog kernel/printk/printk.c:1833 [inline] __se_sys_syslog kernel/printk/printk.c:1831 [inline] __x64_sys_syslog+0x6f/0xb0 kernel/printk/printk.c:1831 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 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1454 [inline] free_pcp_prepare+0x4de/0xa50 mm/page_alloc.c:1504 free_unref_page_prepare mm/page_alloc.c:3388 [inline] free_unref_page+0x1c/0x460 mm/page_alloc.c:3483 free_contig_range+0xa1/0x150 mm/page_alloc.c:9532 destroy_args+0x4fc/0x6b0 mm/debug_vm_pgtable.c:1023 debug_vm_pgtable+0x1a00/0x2d20 mm/debug_vm_pgtable.c:1403 do_one_initcall+0xcd/0x350 init/main.c:1310 do_initcall_level init/main.c:1383 [inline] do_initcalls init/main.c:1399 [inline] do_basic_setup init/main.c:1418 [inline] kernel_init_freeable+0x53c/0x890 init/main.c:1638 kernel_init+0x1a/0x1c0 init/main.c:1526 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Memory state around the buggy address: ffff88817da93f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88817da94000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88817da94080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88817da94100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88817da94180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================