ci2 starts bisection 2025-09-11 02:46:48.136815457 +0000 UTC m=+95801.108937953 bisecting fixing commit since 3594f306da129190de25938b823f353ef7f9e322 building syzkaller on 7368264b463a401571d2eb381f50ea2a758e9d05 ensuring issue is reproducible on original commit 3594f306da129190de25938b823f353ef7f9e322 testing commit 3594f306da129190de25938b823f353ef7f9e322 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 3fdc82b0296beab07c6e380367cff246d93899eb8666b1cd941c621cf812aca4 run #0: crashed: KASAN: use-after-free Read in __lock_sock run #1: crashed: KASAN: use-after-free Read in __lock_sock run #2: crashed: WARNING: ODEBUG bug in __sk_destruct run #3: crashed: KASAN: use-after-free Read in __lock_sock run #4: crashed: KASAN: use-after-free Read in __lock_sock run #5: crashed: KASAN: use-after-free Read in __lock_sock run #6: crashed: KASAN: use-after-free Read in __lock_sock run #7: crashed: KASAN: use-after-free Read in __lock_sock run #8: crashed: KASAN: use-after-free Read in __lock_sock run #9: crashed: KASAN: use-after-free Read in __lock_sock run #10: crashed: KASAN: use-after-free Read in __lock_sock run #11: crashed: KASAN: use-after-free Read in __lock_sock run #12: crashed: KASAN: use-after-free Read in __lock_sock run #13: crashed: WARNING: ODEBUG bug in __sk_destruct run #14: crashed: WARNING: ODEBUG bug in __sk_destruct run #15: crashed: KASAN: use-after-free Read in release_sock run #16: crashed: KASAN: use-after-free Read in __lock_sock run #17: crashed: WARNING: ODEBUG bug in __sk_destruct run #18: crashed: WARNING: ODEBUG bug in __sk_destruct run #19: basic kernel testing failed: failed to copy binary to VM: timedout after 1m0s ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1347632561" "root@10.128.0.233:./syz-executor1347632561"] Executing: program /usr/bin/ssh host 10.128.0.233, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u7, OpenSSL 3.0.17 1 Jul 2025 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.0.233 [10.128.0.233] port 22. debug1: fd 3 clearing O_NONBLOCK debug1: Connection established. debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa_sk type -1 debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /root/.ssh/id_ed25519 type -1 debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: identity file /root/.ssh/id_ed25519_sk type -1 debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /root/.ssh/id_xmss type -1 debug1: identity file /root/.ssh/id_xmss-cert type -1 debug1: identity file /root/.ssh/id_dsa type -1 debug1: identity file /root/.ssh/id_dsa-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u7 debug1: Remote protocol version 2.0, remote software version OpenSSH_9.9 debug1: compat_banner: match: OpenSSH_9.9 pat OpenSSH* compat 0x04000000 debug1: Authenticating to 10.128.0.233:22 as 'root' debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: algorithm: sntrup761x25519-sha512 debug1: kex: host key algorithm: ssh-ed25519 debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: compression: none debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: compression: none debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: SSH2_MSG_KEX_ECDH_REPLY received debug1: Server host key: ssh-ed25519 SHA256:EAvWV3GG8odMD+k20F251zjwXNDbyLo/P7N2oY0DvFQ debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory Warning: Permanently added '10.128.0.233' (ED25519) to the list of known hosts. debug1: ssh_packet_send2_wrapped: resetting send seqnr 3 debug1: rekey out after 134217728 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: ssh_packet_read_poll2: resetting read seqnr 3 debug1: SSH2_MSG_NEWKEYS received debug1: rekey in after 134217728 blocks debug1: Will attempt key: /root/.ssh/id_rsa debug1: Will attempt key: /root/.ssh/id_ecdsa debug1: Will attempt key: /root/.ssh/id_ecdsa_sk debug1: Will attempt key: /root/.ssh/id_ed25519 debug1: Will attempt key: /root/.ssh/id_ed25519_sk debug1: Will attempt key: /root/.ssh/id_xmss debug1: Will attempt key: /root/.ssh/id_dsa debug1: SSH2_MSG_EXT_INFO received debug1: kex_input_ext_info: server-sig-algs= debug1: kex_input_ext_info: publickey-hostbound@openssh.com=<0> debug1: kex_input_ext_info: ping@openssh.com (unrecognised) debug1: SSH2_MSG_SERVICE_ACCEPT received Authenticated to 10.128.0.233 ([10.128.0.233]:22) using "none". debug1: channel 0: new session [client-session] (inactive timeout: 0) debug1: Requesting no-more-sessions@openssh.com debug1: Entering interactive session. debug1: pledge: network representative crash: KASAN: use-after-free Read in __lock_sock, types: [KASAN-USE-AFTER-FREE-READ] check whether we can drop unnecessary instrumentation disabling configs for [hang memleak ubsan bug_or_warning locking atomic_sleep], they are not needed testing commit 3594f306da129190de25938b823f353ef7f9e322 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 1a045bf3a49a7c7a1197c6d60af1cb810c703fb02df29b02dc5fd7e144930e82 run #0: crashed: KASAN: use-after-free Read in __lock_sock run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: KASAN: use-after-free Read in __lock_sock, types: [KASAN-USE-AFTER-FREE-READ] unable to determine the verdict: 9 good runs (wanted 5), for bad wanted 5 in total, got 10 kconfig minimization: base=3829 full=7619 leaves diff=2131 split chunks (needed=false): <2131> split chunk #0 of len 2131 into 5 parts testing without sub-chunk 1/5 testing commit 3594f306da129190de25938b823f353ef7f9e322 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 86175ea3912c2c7461eb55c4d70663dcccc0a632bbd07be918e587b70a20dffd all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 testing commit 3594f306da129190de25938b823f353ef7f9e322 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: a471f1b6495185dbbe045c08f07e9ef2f38715946d63d5e91b130164be1624dd run #0: crashed: KASAN: use-after-free Read in __lock_sock run #1: crashed: KASAN: use-after-free Read in __lock_sock run #2: crashed: KASAN: use-after-free Read in release_sock run #3: crashed: WARNING: ODEBUG bug in __sk_destruct run #4: crashed: WARNING: ODEBUG bug in __sk_destruct run #5: crashed: WARNING: ODEBUG bug in __sk_destruct run #6: crashed: WARNING: ODEBUG bug in __sk_destruct run #7: crashed: KASAN: use-after-free Read in __lock_sock run #8: crashed: WARNING: ODEBUG bug in __sk_destruct run #9: crashed: WARNING: ODEBUG bug in __sk_destruct representative crash: WARNING: ODEBUG bug in __sk_destruct, types: [WARNING KASAN-USE-AFTER-FREE-READ] the chunk can be dropped testing without sub-chunk 3/5 testing commit 3594f306da129190de25938b823f353ef7f9e322 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: f74a9fe1cc84608cec487a6db8bceff53337e5bc99eddc06826c9519d6ab5076 run #0: crashed: KASAN: use-after-free Read in __lock_sock run #1: crashed: KASAN: use-after-free Read in __lock_sock run #2: crashed: KASAN: use-after-free Read in kcm_tx_work run #3: crashed: WARNING: ODEBUG bug in __sk_destruct run #4: crashed: KASAN: use-after-free Read in __lock_sock run #5: crashed: WARNING: ODEBUG bug in __sk_destruct run #6: crashed: WARNING: ODEBUG bug in __sk_destruct run #7: crashed: KASAN: use-after-free Read in __lock_sock run #8: crashed: WARNING: ODEBUG bug in __sk_destruct run #9: crashed: KASAN: use-after-free Read in __lock_sock representative crash: KASAN: use-after-free Read in __lock_sock, types: [KASAN-USE-AFTER-FREE-READ WARNING] the chunk can be dropped testing without sub-chunk 4/5 testing commit 3594f306da129190de25938b823f353ef7f9e322 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 05ffb738032d29af44aadc7d69d9fa106d3b6f102bf53df7e43129b28ccc7cbb run #0: crashed: WARNING: ODEBUG bug in __sk_destruct run #1: crashed: WARNING: ODEBUG bug in __sk_destruct run #2: crashed: WARNING: ODEBUG bug in __sk_destruct run #3: crashed: WARNING: ODEBUG bug in __sk_destruct run #4: crashed: WARNING: ODEBUG bug in __sk_destruct run #5: crashed: KASAN: use-after-free Read in __lock_sock run #6: crashed: WARNING: ODEBUG bug in __sk_destruct run #7: crashed: WARNING: ODEBUG bug in __sk_destruct run #8: crashed: KASAN: use-after-free Read in __lock_sock run #9: OK representative crash: WARNING: ODEBUG bug in __sk_destruct, types: [WARNING] the chunk can be dropped testing without sub-chunk 5/5 testing commit 3594f306da129190de25938b823f353ef7f9e322 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 7ce491cfc43900831fe5a8bd62c1fef3d9a49ff0fcde043fab10a7968c9bd2e5 run #0: crashed: WARNING: ODEBUG bug in __sk_destruct run #1: crashed: KASAN: use-after-free Read in __lock_sock run #2: crashed: WARNING: ODEBUG bug in __sk_destruct run #3: crashed: WARNING: ODEBUG bug in __sk_destruct run #4: crashed: WARNING: ODEBUG bug in __sk_destruct run #5: crashed: WARNING: ODEBUG bug in __sk_destruct run #6: crashed: WARNING: ODEBUG bug in __sk_destruct run #7: crashed: WARNING: ODEBUG bug in __sk_destruct run #8: crashed: WARNING: ODEBUG bug in __sk_destruct run #9: crashed: WARNING: ODEBUG bug in __sk_destruct representative crash: WARNING: ODEBUG bug in __sk_destruct, types: [WARNING] the chunk can be dropped minimized to 427 configs; suspects: [6LOWPAN 6LOWPAN_GHC_EXT_HDR_DEST 6LOWPAN_GHC_EXT_HDR_FRAG 6LOWPAN_GHC_EXT_HDR_HOP 6LOWPAN_GHC_EXT_HDR_ROUTE 6LOWPAN_GHC_ICMPV6 6LOWPAN_GHC_UDP 6LOWPAN_NHC 6LOWPAN_NHC_DEST 6LOWPAN_NHC_FRAGMENT 6LOWPAN_NHC_HOP 6LOWPAN_NHC_IPV6 6LOWPAN_NHC_MOBILITY 6LOWPAN_NHC_ROUTING 6LOWPAN_NHC_UDP 6PACK 842_COMPRESS 842_DECOMPRESS 9P_FSCACHE 9P_FS_POSIX_ACL 9P_FS_SECURITY ACORN_PARTITION ACORN_PARTITION_ADFS ACORN_PARTITION_CUMANA ACORN_PARTITION_EESOX ACORN_PARTITION_ICS ACORN_PARTITION_POWERTEC ACORN_PARTITION_RISCIX ACPI_NFIT ACPI_PLATFORM_PROFILE ADFS_FS AFFS_FS AFS_FS AFS_FSCACHE AF_KCM AF_RXRPC AF_RXRPC_IPV6 AIX_PARTITION AMD_SFH_HID AMIGA_PARTITION ANDROID_BINDERFS ANDROID_BINDER_IPC ANON_VMA_NAME APERTURE_HELPERS APPLE_MFI_FASTCHARGE AR5523 ARCH_ENABLE_THP_MIGRATION 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_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 BCMA BCMA_HOST_PCI_POSSIBLE BEFS_FS BFQ_CGROUP_DEBUG BFQ_GROUP_IOSCHED BFS_FS BIG_KEYS BLK_CGROUP_RWSTAT BLK_DEBUG_FS_ZONED BLK_DEV_BSGLIB BLK_DEV_INITRD 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_MQ_RDMA 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_SYSCALL BPQETHER BRIDGE BRIDGE_CFM BRIDGE_EBT_802_3 BRIDGE_EBT_AMONG BRIDGE_EBT_ARP BRIDGE_EBT_ARPREPLY BRIDGE_EBT_BROUTE BRIDGE_EBT_DNAT BRIDGE_EBT_IP BRIDGE_EBT_IP6 BRIDGE_EBT_LIMIT BRIDGE_EBT_LOG BRIDGE_EBT_MARK BRIDGE_EBT_MARK_T BRIDGE_EBT_NFLOG BRIDGE_EBT_PKTTYPE BRIDGE_EBT_REDIRECT BRIDGE_EBT_SNAT BRIDGE_EBT_STP BRIDGE_EBT_T_FILTER BRIDGE_EBT_T_NAT BRIDGE_EBT_VLAN BRIDGE_IGMP_SNOOPING BRIDGE_MRP BRIDGE_NF_EBTABLES BRIDGE_VLAN_FILTERING BSD_DISKLABEL BSD_PROCESS_ACCT_V3 BT BTRFS_ASSERT BTRFS_FS BTRFS_FS_POSIX_ACL BTRFS_FS_REF_VERIFY BTT BT_6LOWPAN BT_ATH3K BT_BCM BT_BNEP BT_BNEP_MC_FILTER BT_BNEP_PROTO_FILTER BT_BREDR BT_CMTP BT_HCIBCM203X BT_HCIBFUSB BT_HCIBPA10X BT_HCIBTUSB BT_HCIBTUSB_AUTOSUSPEND BT_HCIBTUSB_BCM BT_HCIBTUSB_MTK BT_HCIBTUSB_RTL BT_HCIUART BT_HCIUART_3WIRE BT_HCIUART_AG6XX BT_HCIUART_BCSP BT_HCIUART_H4 BT_HCIUART_LL BT_HCIUART_MRVL BT_HCIUART_QCA BT_HCIUART_SERDEV BT_HCIVHCI BT_HIDP BT_HS BT_INTEL BT_LE BT_LEDS BT_MSFTEXT BT_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_ESD_USB CAN_ETAS_ES58X 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_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 CHARGER_ISP1704 CHR_DEV_ST CIFS CIFS_ALLOW_INSECURE_LEGACY CIFS_DEBUG CIFS_DFS_UPCALL CIFS_FSCACHE CIFS_POSIX CIFS_SMB_DIRECT CIFS_SWN_UPCALL CIFS_UPCALL CIFS_XATTR CLS_U32_MARK CLS_U32_PERF CMA CMA_SIZE_SEL_MBYTES CMDLINE_PARTITION COMEDI COMEDI_8254 COMEDI_8255 COMEDI_8255_PCI COMEDI_8255_SA COMEDI_ADL_PCI9118 COMEDI_ADQ12B COMEDI_AIO_AIO12_8 COMEDI_AIO_IIRO_16 COMEDI_AMPLC_DIO200 COMEDI_AMPLC_DIO200_ISA COMEDI_AMPLC_PC236 COMEDI_AMPLC_PC236_ISA COMEDI_AMPLC_PC263_ISA COMEDI_BOND COMEDI_C6XDIGIO COMEDI_DAC02 COMEDI_DAS08 COMEDI_DAS08_ISA COMEDI_DAS16M1 COMEDI_DAS1800 COMEDI_DAS6402 COMEDI_DAS800 COMEDI_DMM32AT COMEDI_DT2801 COMEDI_DT2811 COMEDI_DT2814 COMEDI_DT2815 COMEDI_DT2817 COMEDI_DT282X COMEDI_DT9812 COMEDI_FL512 COMEDI_ISADMA COMEDI_ISA_DRIVERS COMEDI_KCOMEDILIB COMEDI_MISC_DRIVERS COMEDI_MPC624 COMEDI_MULTIQ3 COMEDI_NI_ATMIO16D COMEDI_NI_AT_A2150 COMEDI_NI_AT_AO COMEDI_NI_DAQ_700_CS COMEDI_NI_LABPC COMEDI_NI_LABPC_CS COMEDI_NI_LABPC_ISA COMEDI_NI_LABPC_ISADMA COMEDI_NI_LABPC_PCI COMEDI_NI_USB6501 COMEDI_PARPORT COMEDI_PCI_DRIVERS COMEDI_PCL711 COMEDI_PCL724 COMEDI_PCL726 COMEDI_PCL730 COMEDI_PCL812 COMEDI_PCL816 COMEDI_PCL818 COMEDI_PCM3724 COMEDI_PCMAD COMEDI_PCMCIA_DRIVERS COMEDI_PCMDA12 COMEDI_PCMMIO COMEDI_PCMUIO COMEDI_RTI800 COMEDI_RTI802 COMEDI_S526 COMEDI_TEST COMEDI_USBDUX COMEDI_USBDUXFAST COMEDI_USBDUXSIGMA COMEDI_USB_DRIVERS COMEDI_VMK80XX COMPAT_NETLINK_MESSAGES COUNTER CRAMFS CRAMFS_BLOCKDEV CRAMFS_MTD CRC4 CRC64 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_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_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_SHA3 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 DCA DCB DEFAULT_PFIFO_FAST DEVICE_MIGRATION DMA_CMA FSCACHE FUSE_FS GPIOLIB HAMRADIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_RTRS_CLIENT IOSCHED_BFQ ISDN ISDN_CAPI LIBNVDIMM MAC80211 MAC80211_LEDS MEDIA_SUPPORT MTD NET_CLS_U32 NET_SCH_DEFAULT PARTITION_ADVANCED PCCARD PCMCIA RFKILL SERIAL_DEV_BUS TLS TLS_DEVICE USB_GADGET USB_PHY VLAN_8021Q WANT_COMPAT_NETLINK_MESSAGES WEXT_CORE WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ATH] testing current HEAD f97f1002271b0834b87afa7097b5ad6e7d14abd9 testing commit f97f1002271b0834b87afa7097b5ad6e7d14abd9 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: a663922de64912dd0a083da05d528f50bceb7be16756103220f63f3866972037 run #0: crashed: KASAN: use-after-free Read in __lock_sock run #1: crashed: KASAN: use-after-free Read in __lock_sock run #2: crashed: KASAN: use-after-free Read in lock_sock_nested run #3: crashed: WARNING: ODEBUG bug in __sk_destruct run #4: crashed: KASAN: use-after-free Read in __lock_sock run #5: crashed: KASAN: use-after-free Read in __lock_sock run #6: crashed: WARNING: ODEBUG bug in __sk_destruct run #7: crashed: KASAN: use-after-free Read in lock_sock_nested run #8: crashed: WARNING: ODEBUG bug in __sk_destruct run #9: crashed: KASAN: use-after-free Read in process_one_work representative crash: KASAN: use-after-free Read in __lock_sock, types: [KASAN-USE-AFTER-FREE-READ WARNING] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 2h5m9.194452885s (build: 37m30.849673613s, test: 1h24m44.806344205s) crash still not fixed or there were kernel test errors commit msg: Linux 6.1.151 crash: KASAN: use-after-free Read in __lock_sock ================================================================== BUG: KASAN: use-after-free in __lock_acquire+0xf7/0x7c50 kernel/locking/lockdep.c:4919 Read of size 8 at addr ffff88811f9124f0 by task kworker/u4:4/570 CPU: 1 PID: 570 Comm: kworker/u4:4 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Workqueue: kkcmd kcm_tx_work Call Trace: dump_stack_lvl+0xe3/0x16b lib/dump_stack.c:106 print_address_description mm/kasan/report.c:316 [inline] print_report+0xa8/0x210 mm/kasan/report.c:420 kasan_report+0x10b/0x140 mm/kasan/report.c:524 __lock_acquire+0xf7/0x7c50 kernel/locking/lockdep.c:4919 lock_acquire+0x1b4/0x490 kernel/locking/lockdep.c:5662 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x32/0x50 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] __lock_sock+0x148/0x250 net/core/sock.c:2916 lock_sock_nested+0x81/0xe0 net/core/sock.c:3493 lock_sock include/net/sock.h:1756 [inline] kcm_tx_work+0x28/0x140 net/kcm/kcmsock.c:731 process_one_work+0x799/0xea0 kernel/workqueue.c:2292 worker_thread+0x8cc/0xfb0 kernel/workqueue.c:2439 kthread+0x259/0x2d0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Allocated by task 2847: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 __kasan_slab_alloc+0x6b/0x80 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x4b/0x480 mm/slab.h:737 slab_alloc_node mm/slub.c:3359 [inline] slab_alloc mm/slub.c:3367 [inline] __kmem_cache_alloc_lru mm/slub.c:3374 [inline] kmem_cache_alloc+0x123/0x2f0 mm/slub.c:3383 sk_prot_alloc+0x51/0x1b0 net/core/sock.c:2044 sk_alloc+0x30/0x2d0 net/core/sock.c:2103 kcm_clone net/kcm/kcmsock.c:1640 [inline] kcm_ioctl+0x28f/0xe40 net/kcm/kcmsock.c:1685 sock_do_ioctl+0xcd/0x260 net/socket.c:1204 sock_ioctl+0x41d/0x540 net/socket.c:1321 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xa6/0xf0 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Freed by task 2848: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x2d/0x50 mm/kasan/generic.c:516 ____kasan_slab_free+0x126/0x1e0 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1729 [inline] slab_free_freelist_hook+0x131/0x1a0 mm/slub.c:1755 slab_free mm/slub.c:3687 [inline] kmem_cache_free+0xf7/0x290 mm/slub.c:3709 sk_prot_free net/core/sock.c:2084 [inline] __sk_destruct+0x353/0x4b0 net/core/sock.c:2172 kcm_release+0x3ad/0x550 net/kcm/kcmsock.c:1860 __sock_release net/socket.c:654 [inline] sock_close+0xcb/0x220 net/socket.c:1400 __fput+0x1a9/0x700 fs/file_table.c:320 task_work_run+0x142/0x1e0 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xda/0xf0 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xa9/0x120 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Last potentially related work creation: kasan_save_stack+0x3a/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb2/0xc0 mm/kasan/generic.c:486 insert_work+0x4f/0x330 kernel/workqueue.c:1361 __queue_work+0x93d/0xc40 kernel/workqueue.c:1520 queue_work_on+0xcb/0x160 kernel/workqueue.c:1548 queue_work include/linux/workqueue.h:512 [inline] kcm_unattach+0x858/0xe30 net/kcm/kcmsock.c:1549 kcm_unattach_ioctl net/kcm/kcmsock.c:1606 [inline] kcm_ioctl+0x69d/0xe40 net/kcm/kcmsock.c:1673 sock_do_ioctl+0xcd/0x260 net/socket.c:1204 sock_ioctl+0x41d/0x540 net/socket.c:1321 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xa6/0xf0 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Second to last potentially related work creation: kasan_save_stack+0x3a/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb2/0xc0 mm/kasan/generic.c:486 insert_work+0x4f/0x330 kernel/workqueue.c:1361 __queue_work+0x93d/0xc40 kernel/workqueue.c:1520 queue_work_on+0xcb/0x160 kernel/workqueue.c:1548 kcm_attach net/kcm/kcmsock.c:1429 [inline] kcm_attach_ioctl net/kcm/kcmsock.c:1457 [inline] kcm_ioctl+0xc20/0xe40 net/kcm/kcmsock.c:1663 sock_do_ioctl+0xcd/0x260 net/socket.c:1204 sock_ioctl+0x41d/0x540 net/socket.c:1321 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xa6/0xf0 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 The buggy address belongs to the object at ffff88811f912440 which belongs to the cache KCM of size 1720 The buggy address is located 176 bytes inside of 1720-byte region [ffff88811f912440, ffff88811f912af8) The buggy address belongs to the physical page: page:ffffea00047e4400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11f910 head:ffffea00047e4400 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff88810466fa01 flags: 0x200000000010200(slab|head|node=0|zone=2) raw: 0200000000010200 0000000000000000 dead000000000122 ffff888107f4d780 raw: 0000000000000000 0000000080110011 00000001ffffffff ffff88810466fa01 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 2817, tgid 2814 (syz.2.17), ts 101115598020, free_ts 101063542490 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x173/0x1a0 mm/page_alloc.c:2532 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x24d6/0x2650 mm/page_alloc.c:4328 __alloc_pages+0x1df/0x4e0 mm/page_alloc.c:5614 alloc_slab_page+0x5d/0x160 mm/slub.c:1799 allocate_slab mm/slub.c:1944 [inline] new_slab+0x87/0x2c0 mm/slub.c:1997 ___slab_alloc+0xbc6/0x1230 mm/slub.c:3154 __slab_alloc mm/slub.c:3240 [inline] slab_alloc_node mm/slub.c:3325 [inline] slab_alloc mm/slub.c:3367 [inline] __kmem_cache_alloc_lru mm/slub.c:3374 [inline] kmem_cache_alloc+0x1b7/0x2f0 mm/slub.c:3383 sk_prot_alloc+0x51/0x1b0 net/core/sock.c:2044 sk_alloc+0x30/0x2d0 net/core/sock.c:2103 kcm_clone net/kcm/kcmsock.c:1640 [inline] kcm_ioctl+0x28f/0xe40 net/kcm/kcmsock.c:1685 sock_do_ioctl+0xcd/0x260 net/socket.c:1204 sock_ioctl+0x41d/0x540 net/socket.c:1321 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xa6/0xf0 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1459 [inline] free_pcp_prepare mm/page_alloc.c:1509 [inline] free_unref_page_prepare+0x822/0x860 mm/page_alloc.c:3384 free_unref_page+0x2e/0x3c0 mm/page_alloc.c:3479 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x144/0x160 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x1e/0x80 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x4b/0x480 mm/slab.h:737 slab_alloc_node mm/slub.c:3359 [inline] slab_alloc mm/slub.c:3367 [inline] __kmem_cache_alloc_lru mm/slub.c:3374 [inline] kmem_cache_alloc+0x123/0x2f0 mm/slub.c:3383 getname_flags+0xa0/0x430 fs/namei.c:139 user_path_at_empty+0x1b/0x50 fs/namei.c:2904 do_readlinkat+0xbe/0x380 fs/stat.c:468 __do_sys_readlink fs/stat.c:501 [inline] __se_sys_readlink fs/stat.c:498 [inline] __x64_sys_readlink+0x76/0x80 fs/stat.c:498 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Memory state around the buggy address: ffff88811f912380: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc ffff88811f912400: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb >ffff88811f912480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88811f912500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88811f912580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================