ci starts bisection 2023-09-10 05:28:47.936121399 +0000 UTC m=+127381.868899099 bisecting cause commit starting from ae074e2b2fd410bf54d56509a7e48fb83873af3b building syzkaller on 696ea0d2f4fdaa17db929e152edba19bf7666d84 ensuring issue is reproducible on original commit ae074e2b2fd410bf54d56509a7e48fb83873af3b testing commit ae074e2b2fd410bf54d56509a7e48fb83873af3b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 90d42ff60b9f945901f87678f9f489280a250efd6c3c0cec7f62111c3987a48e all runs: crashed: general protection fault in lock_sock_nested representative crash: general protection fault in lock_sock_nested, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit ae074e2b2fd410bf54d56509a7e48fb83873af3b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3671bae4d3510ed3c3c77a019008fa4a758d2a94357d5e9308be19db366fa4a4 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested representative crash: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], 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 [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit ae074e2b2fd410bf54d56509a7e48fb83873af3b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 48b0ba1d7d276d846c15ed5545b5306d9b4d4ddf95d6a967604cb031d0acfcdb all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit ae074e2b2fd410bf54d56509a7e48fb83873af3b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3923c21ec11fd05a028f630243b375ac6c1a150ba64bec8a6daa7387d8e07285 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested representative crash: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit ae074e2b2fd410bf54d56509a7e48fb83873af3b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c13988cb650b9296ce89b1a6fdd9327251423e6b21d393047978dbd55dab76a7 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested representative crash: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit ae074e2b2fd410bf54d56509a7e48fb83873af3b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9cbf01eb36e78e7bbdcedf87aa7338f881336a074b687600aebc34eecbb423ea all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested representative crash: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit ae074e2b2fd410bf54d56509a7e48fb83873af3b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dcce895ca8d917b445357357aaaf171c7cfdf904e75b2556a61de255e43f3aea all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested representative crash: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested, types: [UNKNOWN] 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 [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], 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: 4687e97cd66a54c233d0e2b11a6706dc37c71bf949eaec39b28beaf820976edc all runs: OK false negative chance: 0.000 # git bisect start ae074e2b2fd410bf54d56509a7e48fb83873af3b 2dde18cd1d8fac735875f2e4987f11817cc0bc2c Bisecting: 2004 revisions left to test after this (roughly 11 steps) [c873512ef3a39cc1a605b7a5ff2ad0a33d619aa8] Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net testing commit c873512ef3a39cc1a605b7a5ff2ad0a33d619aa8 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 783405f142ee755c10b36a6281857b28a1ff3ca382190e54e2e26efa610a4dbf all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested representative crash: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested, types: [UNKNOWN] # git bisect bad c873512ef3a39cc1a605b7a5ff2ad0a33d619aa8 Bisecting: 1002 revisions left to test after this (roughly 10 steps) [6e97ba552b8d3dd074a28b8600740b8bed42267b] tcp: set TCP_DEFER_ACCEPT locklessly testing commit 6e97ba552b8d3dd074a28b8600740b8bed42267b gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9c64971941067f0952a1a11a069f0eb786fbf1d37c9e73fa490f65c8534092f2 all runs: OK false negative chance: 0.000 # git bisect good 6e97ba552b8d3dd074a28b8600740b8bed42267b Bisecting: 500 revisions left to test after this (roughly 9 steps) [85c786340a65eb059183a5c3c6fab8664e1f6e8a] Merge branch 'vcap_get_rule-return-value' testing commit 85c786340a65eb059183a5c3c6fab8664e1f6e8a gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0e0d0fbc46efbf2a5dbb54c173e62d0f42d48df24c0be32da04f0b478d864cc5 all runs: OK false negative chance: 0.000 # git bisect good 85c786340a65eb059183a5c3c6fab8664e1f6e8a Bisecting: 224 revisions left to test after this (roughly 8 steps) [1fa6ffad12753ea49e05f8ee1bc7e40684bdaca7] Merge tag 'wireless-next-2023-08-25' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next testing commit 1fa6ffad12753ea49e05f8ee1bc7e40684bdaca7 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f158af687d5e55aa84f9e138d7b5fe799ead748a721259eaa6d7f0c20eb81cd8 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested representative crash: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested, types: [UNKNOWN] # git bisect bad 1fa6ffad12753ea49e05f8ee1bc7e40684bdaca7 Bisecting: 137 revisions left to test after this (roughly 7 steps) [7866b9faf0a8c20de41f3d08fb5cae9bdcf7756f] Bluetooth: btintel: Send new command for PPAG testing commit 7866b9faf0a8c20de41f3d08fb5cae9bdcf7756f gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 75e3b94eaa6363cc0ca6dfe2f31155216c4ae09a3a04f123fb4f243d30e99add all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested representative crash: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested, types: [UNKNOWN] # git bisect bad 7866b9faf0a8c20de41f3d08fb5cae9bdcf7756f Bisecting: 68 revisions left to test after this (roughly 6 steps) [e855afd715656a9f25cf62fa68d99c33213b83b7] net/mlx5: Introduce mlx5_eswitch_load/unload_sf_vport() and use it from SF code testing commit e855afd715656a9f25cf62fa68d99c33213b83b7 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e475ab9021669c188e5a01b5979c072beae1d762aadcdf41bad25ca10f03382f all runs: OK false negative chance: 0.000 # git bisect good e855afd715656a9f25cf62fa68d99c33213b83b7 Bisecting: 31 revisions left to test after this (roughly 5 steps) [9f6708a668186dc5b38532fc1d1ff2f5311722d6] Merge tag 'mlx5-updates-2023-08-22' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux testing commit 9f6708a668186dc5b38532fc1d1ff2f5311722d6 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9f63ac8ecd4fa68aab9a9bf372e8d8366a3f7650232133a5b7ba489d219d2d4e all runs: OK false negative chance: 0.000 # git bisect good 9f6708a668186dc5b38532fc1d1ff2f5311722d6 Bisecting: 17 revisions left to test after this (roughly 4 steps) [58dbd6428a6819e55a3c52ec60126b5d00804a38] RDMA/mlx5: Handles RoCE MACsec steering rules addition and deletion testing commit 58dbd6428a6819e55a3c52ec60126b5d00804a38 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d3eda7c95dfe0e4e86bba62637a821c86caa2362c6fdaab59a59aef1aee785c6 all runs: OK false negative chance: 0.000 # git bisect good 58dbd6428a6819e55a3c52ec60126b5d00804a38 Bisecting: 8 revisions left to test after this (roughly 3 steps) [94d9ba9f9888b748d4abd2aa1547af56ae85f772] Bluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync testing commit 94d9ba9f9888b748d4abd2aa1547af56ae85f772 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bb2d100cddf2dd1350ca51dd230ff8ca3687b18d921f83b76f18b7940436ba33 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested representative crash: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested, types: [UNKNOWN] # git bisect bad 94d9ba9f9888b748d4abd2aa1547af56ae85f772 Bisecting: 4 revisions left to test after this (roughly 2 steps) [3c5066c6b0a5e21c36809647c06710ceb1eaddba] Merge branch 'mlx5-next' of https://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux testing commit 3c5066c6b0a5e21c36809647c06710ceb1eaddba gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 08d7b97ea0d2311d4789febd1831a505571d43564fb588311842bdcf03c42f35 all runs: OK false negative chance: 0.000 # git bisect good 3c5066c6b0a5e21c36809647c06710ceb1eaddba Bisecting: 2 revisions left to test after this (roughly 1 step) [7de05cb47134a3ac179f28f5363c36d9ac17c6c3] Bluetooth: btnxpuart: Remove check for CTS low after FW download testing commit 7de05cb47134a3ac179f28f5363c36d9ac17c6c3 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 990aaa0c33af338239ce1d3000188ca534133a785856920455d8a8c83cb1429a all runs: OK false negative chance: 0.000 # git bisect good 7de05cb47134a3ac179f28f5363c36d9ac17c6c3 Bisecting: 0 revisions left to test after this (roughly 1 step) [491f9eff276012f3036f5546198cdf4a9e268284] Bluetooth: btnxpuart: Improve inband Independent Reset handling testing commit 491f9eff276012f3036f5546198cdf4a9e268284 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 99f6f2bde80090b0cdd9fc0fb45c52e940ca36c9d466ac9b176b84be8cfeb406 all runs: OK false negative chance: 0.000 # git bisect good 491f9eff276012f3036f5546198cdf4a9e268284 94d9ba9f9888b748d4abd2aa1547af56ae85f772 is the first bad commit commit 94d9ba9f9888b748d4abd2aa1547af56ae85f772 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: bb2d100cddf2dd1350ca51dd230ff8ca3687b18d921f83b76f18b7940436ba33 parent signature: 99f6f2bde80090b0cdd9fc0fb45c52e940ca36c9d466ac9b176b84be8cfeb406 revisions tested: 20, total time: 7h4m58.800874357s (build: 3h57m29.83689566s, test: 2h45m12.351305503s) first bad commit: 94d9ba9f9888b748d4abd2aa1547af56ae85f772 Bluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync recipients (to): ["johan.hedberg@gmail.com" "linux-bluetooth@vger.kernel.org" "luiz.dentz@gmail.com" "luiz.von.dentz@intel.com" "marcel@holtmann.org" "pav@iki.fi"] recipients (cc): ["linux-kernel@vger.kernel.org"] crash: BUG: unable to handle kernel NULL pointer dereference in lock_sock_nested BUG: kernel NULL pointer dereference, address: 0000000000000138 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 101b98067 P4D 101b98067 PUD 106baa067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 1 PID: 22 Comm: kworker/1:0 Not tainted 6.5.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Workqueue: events l2cap_info_timeout RIP: 0010:__lock_acquire.constprop.0+0x2f2/0x540 kernel/locking/lockdep.c:5016 Code: 0a 48 83 f8 ff 0f 85 a1 01 00 00 0f b7 45 20 66 25 ff 1f 66 89 44 24 16 0f b6 45 22 83 e0 03 88 44 24 10 e9 6d fe ff ff 89 f0 <48> 8b 44 c7 08 48 85 c0 0f 85 68 fd ff ff e9 39 fd ff ff e8 c6 8d RSP: 0018:ffffc900000c3c98 EFLAGS: 00010097 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000130 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88810267b680 R15: 0000000000000200 FS: 0000000000000000(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000138 CR3: 0000000101b3b000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0xab/0x180 kernel/locking/lockdep.c:5726 lock_sock_nested+0x2d/0x70 net/core/sock.c:3504 lock_sock include/net/sock.h:1716 [inline] l2cap_sock_ready_cb+0x17/0x60 net/bluetooth/l2cap_sock.c:1630 l2cap_chan_ready net/bluetooth/l2cap_core.c:1365 [inline] l2cap_conn_start+0x75/0x340 net/bluetooth/l2cap_core.c:1640 process_one_work+0x297/0x4f0 kernel/workqueue.c:2600 worker_thread+0x4e/0x330 kernel/workqueue.c:2751 kthread+0xde/0x110 kernel/kthread.c:389 ret_from_fork+0x2c/0x40 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 Modules linked in: CR2: 0000000000000138 ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire.constprop.0+0x2f2/0x540 kernel/locking/lockdep.c:5016 Code: 0a 48 83 f8 ff 0f 85 a1 01 00 00 0f b7 45 20 66 25 ff 1f 66 89 44 24 16 0f b6 45 22 83 e0 03 88 44 24 10 e9 6d fe ff ff 89 f0 <48> 8b 44 c7 08 48 85 c0 0f 85 68 fd ff ff e9 39 fd ff ff e8 c6 8d RSP: 0018:ffffc900000c3c98 EFLAGS: 00010097 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000130 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88810267b680 R15: 0000000000000200 FS: 0000000000000000(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000138 CR3: 0000000101b3b000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 0a 48 83 or -0x7d(%rax),%cl 3: f8 clc 4: ff 0f decl (%rdi) 6: 85 a1 01 00 00 0f test %esp,0xf000001(%rcx) c: b7 45 mov $0x45,%bh e: 20 66 25 and %ah,0x25(%rsi) 11: ff 1f lcall *(%rdi) 13: 66 89 44 24 16 mov %ax,0x16(%rsp) 18: 0f b6 45 22 movzbl 0x22(%rbp),%eax 1c: 83 e0 03 and $0x3,%eax 1f: 88 44 24 10 mov %al,0x10(%rsp) 23: e9 6d fe ff ff jmp 0xfffffe95 28: 89 f0 mov %esi,%eax * 2a: 48 8b 44 c7 08 mov 0x8(%rdi,%rax,8),%rax <-- trapping instruction 2f: 48 85 c0 test %rax,%rax 32: 0f 85 68 fd ff ff jne 0xfffffda0 38: e9 39 fd ff ff jmp 0xfffffd76 3d: e8 .byte 0xe8 3e: c6 (bad) 3f: 8d .byte 0x8d