ci2 starts bisection 2023-07-11 23:09:00.397008022 +0000 UTC m=+30569.049906426 bisecting fixing commit since 115472395b0a9ea522ba0e106d6dfd7a73df8ba6 building syzkaller on fbf0499acc828df26995835e51d83c3a0117e716 ensuring issue is reproducible on original commit 115472395b0a9ea522ba0e106d6dfd7a73df8ba6 testing commit 115472395b0a9ea522ba0e106d6dfd7a73df8ba6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a0fcfc5888d497332fe3b50bd056873e6069cbbc9a89821a75e519ebbfd9526d run #0: crashed: KASAN: use-after-free Write in pskb_expand_head run #1: crashed: KASAN: use-after-free Write in pskb_expand_head run #2: crashed: KASAN: slab-out-of-bounds Write in pskb_expand_head run #3: crashed: KASAN: slab-out-of-bounds Write in pskb_expand_head run #4: crashed: INFO: rcu detected stall in rtnl_newlink run #5: crashed: INFO: rcu detected stall in rtnl_newlink run #6: crashed: INFO: rcu detected stall in rtnl_newlink run #7: crashed: INFO: rcu detected stall in rtnl_newlink run #8: crashed: INFO: rcu detected stall in rtnl_newlink run #9: crashed: INFO: rcu detected stall in rtnl_newlink run #10: crashed: INFO: rcu detected stall in rtnl_newlink run #11: crashed: INFO: rcu detected stall in rtnl_newlink run #12: crashed: INFO: rcu detected stall in rtnl_newlink run #13: crashed: INFO: rcu detected stall in rtnl_newlink run #14: crashed: INFO: rcu detected stall in rtnl_newlink run #15: crashed: INFO: rcu detected stall in rtnl_newlink run #16: crashed: INFO: rcu detected stall in rtnl_newlink run #17: crashed: INFO: rcu detected stall in rtnl_newlink run #18: crashed: INFO: rcu detected stall in rtnl_newlink run #19: crashed: INFO: rcu detected stall in rtnl_newlink run #20: crashed: INFO: rcu detected stall in rtnl_newlink run #21: crashed: INFO: rcu detected stall in rtnl_newlink run #22: crashed: INFO: rcu detected stall in rtnl_newlink run #23: crashed: INFO: rcu detected stall in rtnl_newlink run #24: crashed: INFO: rcu detected stall in rtnl_newlink run #25: crashed: INFO: rcu detected stall in rtnl_newlink run #26: crashed: INFO: rcu detected stall in rtnl_newlink run #27: crashed: INFO: rcu detected stall in rtnl_newlink run #28: crashed: INFO: rcu detected stall in rtnl_newlink run #29: crashed: INFO: rcu detected stall in rtnl_newlink run #30: crashed: INFO: rcu detected stall in rtnl_newlink run #31: crashed: INFO: rcu detected stall in rtnl_newlink run #32: crashed: INFO: rcu detected stall in rtnl_newlink run #33: crashed: INFO: rcu detected stall in rtnl_newlink run #34: crashed: INFO: rcu detected stall in rtnl_newlink run #35: crashed: INFO: rcu detected stall in rtnl_newlink run #36: crashed: INFO: rcu detected stall in rtnl_newlink run #37: crashed: INFO: rcu detected stall in rtnl_newlink run #38: crashed: INFO: rcu detected stall in rtnl_newlink run #39: crashed: INFO: rcu detected stall in rtnl_newlink representative crash: INFO: rcu detected stall in rtnl_newlink, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 115472395b0a9ea522ba0e106d6dfd7a73df8ba6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3faca134b55ceee9a6408296a631e244b3a278adba8ee43eabd18ecf9aca32b1 run #0: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #1: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #2: crashed: INFO: rcu detected stall in rtnl_newlink run #3: crashed: INFO: rcu detected stall in rtnl_newlink run #4: crashed: INFO: rcu detected stall in rtnl_newlink run #5: crashed: INFO: rcu detected stall in rtnl_newlink run #6: crashed: INFO: rcu detected stall in rtnl_newlink run #7: crashed: INFO: rcu detected stall in rtnl_newlink run #8: crashed: INFO: rcu detected stall in rtnl_newlink run #9: crashed: INFO: rcu detected stall in rtnl_newlink run #10: crashed: INFO: rcu detected stall in rtnl_newlink run #11: crashed: INFO: rcu detected stall in rtnl_newlink run #12: crashed: INFO: rcu detected stall in rtnl_newlink run #13: crashed: INFO: rcu detected stall in rtnl_newlink run #14: crashed: INFO: rcu detected stall in rtnl_newlink run #15: crashed: INFO: rcu detected stall in rtnl_newlink run #16: crashed: INFO: rcu detected stall in rtnl_newlink run #17: crashed: INFO: rcu detected stall in rtnl_newlink run #18: crashed: INFO: rcu detected stall in rtnl_newlink run #19: crashed: INFO: rcu detected stall in rtnl_newlink representative crash: INFO: rcu detected stall in rtnl_newlink, types: [HANG] the bug reproduces without the instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=3705 full=7270 leaves diff=1978 split chunks (needed=false): <1978> split chunk #0 of len 1978 into 5 parts testing without sub-chunk 1/5 testing commit 115472395b0a9ea522ba0e106d6dfd7a73df8ba6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 478b6f57fcd8858391f7bf2657eb0ca9d39bfd7f8f70ce27139933440f6f50ce all runs: OK testing without sub-chunk 2/5 testing commit 115472395b0a9ea522ba0e106d6dfd7a73df8ba6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 583f41aaf212dd33ebd6527e2b6ceb178d15fd7dacb3ee7ca72494da141e60a2 all runs: crashed: INFO: rcu detected stall in rtnl_newlink representative crash: INFO: rcu detected stall in rtnl_newlink, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 testing commit 115472395b0a9ea522ba0e106d6dfd7a73df8ba6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: edc1e9d1efa14fbc3ea15cc8f9325bc0c433516df4e322a160dfef48912a99d1 run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in call_usermodehelper_setup run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in call_usermodehelper_setup run #2: crashed: INFO: rcu detected stall in rtnl_newlink run #3: crashed: INFO: rcu detected stall in rtnl_newlink run #4: crashed: INFO: rcu detected stall in rtnl_newlink run #5: crashed: INFO: rcu detected stall in rtnl_newlink run #6: crashed: INFO: rcu detected stall in rtnl_newlink run #7: crashed: INFO: rcu detected stall in rtnl_newlink run #8: crashed: INFO: rcu detected stall in rtnl_newlink run #9: crashed: INFO: rcu detected stall in rtnl_newlink run #10: crashed: INFO: rcu detected stall in rtnl_newlink run #11: crashed: INFO: rcu detected stall in rtnl_newlink run #12: crashed: INFO: rcu detected stall in rtnl_newlink run #13: crashed: INFO: rcu detected stall in rtnl_newlink run #14: crashed: INFO: rcu detected stall in rtnl_newlink run #15: crashed: INFO: rcu detected stall in rtnl_newlink run #16: crashed: INFO: rcu detected stall in rtnl_newlink run #17: crashed: INFO: rcu detected stall in rtnl_newlink run #18: crashed: INFO: rcu detected stall in rtnl_newlink run #19: crashed: INFO: rcu detected stall in rtnl_newlink representative crash: INFO: rcu detected stall in rtnl_newlink, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 testing commit 115472395b0a9ea522ba0e106d6dfd7a73df8ba6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fe0963d247400a394e6f2a07ebced9b630a1ec4ce196f58b7c824be5579e29a6 run #0: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #1: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #2: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #3: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #4: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #5: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #6: crashed: INFO: rcu detected stall in rtnl_newlink run #7: crashed: INFO: rcu detected stall in rtnl_newlink run #8: crashed: INFO: rcu detected stall in rtnl_newlink run #9: crashed: INFO: rcu detected stall in rtnl_newlink run #10: crashed: INFO: rcu detected stall in rtnl_newlink run #11: crashed: INFO: rcu detected stall in rtnl_newlink run #12: crashed: INFO: rcu detected stall in rtnl_newlink run #13: crashed: INFO: rcu detected stall in rtnl_newlink run #14: crashed: INFO: rcu detected stall in rtnl_newlink run #15: crashed: INFO: rcu detected stall in rtnl_newlink run #16: crashed: INFO: rcu detected stall in rtnl_newlink run #17: crashed: INFO: rcu detected stall in rtnl_newlink run #18: crashed: INFO: rcu detected stall in rtnl_newlink run #19: crashed: INFO: rcu detected stall in rtnl_newlink representative crash: INFO: rcu detected stall in rtnl_newlink, types: [HANG UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 testing commit 115472395b0a9ea522ba0e106d6dfd7a73df8ba6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2dad7be1290fd720d73430b8967b4ec2bb8bf1a2d73b6cec8074271edaf5a1dc run #0: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #1: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #2: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #3: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #4: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #5: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #6: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #7: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #8: crashed: INFO: rcu detected stall in rtnl_newlink run #9: crashed: INFO: rcu detected stall in rtnl_newlink run #10: crashed: INFO: rcu detected stall in rtnl_newlink run #11: crashed: INFO: rcu detected stall in rtnl_newlink run #12: crashed: INFO: rcu detected stall in rtnl_newlink run #13: crashed: INFO: rcu detected stall in rtnl_newlink run #14: crashed: INFO: rcu detected stall in rtnl_newlink run #15: crashed: INFO: rcu detected stall in rtnl_newlink run #16: crashed: INFO: rcu detected stall in rtnl_newlink run #17: crashed: INFO: rcu detected stall in rtnl_newlink run #18: crashed: INFO: rcu detected stall in rtnl_newlink run #19: crashed: INFO: rcu detected stall in rtnl_newlink representative crash: INFO: rcu detected stall in rtnl_newlink, types: [HANG UNKNOWN] the chunk can be dropped minimized to 396 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 AMIGA_PARTITION ANDROID ANDROID_BINDERFS ANDROID_BINDER_IPC AR5523 ARCH_ENABLE_MEMORY_HOTREMOVE ARCH_ENABLE_THP_MIGRATION ASHMEM ASM_MODVERSIONS ASN1_ENCODER 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 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 BLK_CGROUP_IOCOST BLK_CGROUP_IOLATENCY BLK_CGROUP_RWSTAT BLK_DEBUG_FS_ZONED BLK_DEV_BSGLIB BLK_DEV_CRYPTOLOOP 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_INLINE_ENCRYPTION BLK_INLINE_ENCRYPTION_FALLBACK BLK_MQ_RDMA BLK_RQ_ALLOC_TIME BLK_WBT BLK_WBT_MQ BONDING 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_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_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_USB2 CAN_GS_USB CAN_GW CAN_IFI_CANFD CAN_ISOTP CAN_J1939 CAN_KVASER_USB CAN_MCBA_USB CAN_PEAK_USB CAN_RAW 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 CGROUP_DEVICE CGROUP_HUGETLB CGROUP_NET_CLASSID CGROUP_NET_PRIO CGROUP_PERF CGROUP_RDMA CGROUP_WRITEBACK 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 CRC7 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_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_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_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_LIB_SM4 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_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_SM4 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_XTS CRYPTO_XXHASH CUSE CYPRESS_FIRMWARE DAMON DAMON_DBGFS DAMON_VADDR DAX DCB DEBUG_PREEMPT DEFAULT_PFIFO_FAST DEVICE_PRIVATE DEV_COREDUMP DEV_DAX DEV_PAGEMAP_OPS DIMLIB DLN2_ADC DMABUF_HEAPS DMABUF_HEAPS_CMA DMABUF_HEAPS_SYSTEM DMABUF_MOVE_NOTIFY DMA_CMA 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_CIRRUS_QEMU DRM_DEBUG_MM DRM_DP_AUX_CHARDEV DRM_GEM_SHMEM_HELPER DRM_I915 DRM_I915_CAPTURE_ERROR DRM_I915_COMPRESS_ERROR DRM_I915_USERPTR DRM_KMS_HELPER DRM_MIPI_DSI 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 PREEMPTION RFKILL SERIAL_DEV_BUS STAGING TCG_TPM 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 ZONE_DEVICE] disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing current HEAD d54cfc420586425d418a53871290cc4a59d33501 testing commit d54cfc420586425d418a53871290cc4a59d33501 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d8256f34262a7b9bda3c8095c3093ef26aee4c47feb78107c42a1bf336c76d62 run #0: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #1: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #2: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #3: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #4: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #5: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #6: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #7: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #8: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #9: crashed: BUG: unable to handle kernel paging request in __alloc_skb run #10: crashed: INFO: rcu detected stall in rtnl_newlink run #11: crashed: INFO: rcu detected stall in rtnl_newlink run #12: crashed: INFO: rcu detected stall in rtnl_newlink run #13: crashed: INFO: rcu detected stall in rtnl_newlink run #14: crashed: INFO: rcu detected stall in rtnl_newlink run #15: crashed: INFO: rcu detected stall in rtnl_newlink run #16: crashed: INFO: rcu detected stall in rtnl_newlink run #17: crashed: INFO: rcu detected stall in rtnl_newlink run #18: crashed: INFO: rcu detected stall in rtnl_newlink run #19: crashed: INFO: rcu detected stall in rtnl_newlink representative crash: BUG: unable to handle kernel paging request in __alloc_skb, types: [UNKNOWN HANG] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 3h2m9.383209922s (build: 2h16m56.878996292s, test: 42m29.939492626s) crash still not fixed on HEAD or HEAD had kernel test errors commit msg: Linux 5.15.120 crash: BUG: unable to handle kernel paging request in __alloc_skb BUG: unable to handle page fault for address: ffff888274883ac0 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 5001067 P4D 5001067 PUD 0 Oops: 0002 [#1] SMP CPU: 0 PID: 7 Comm: kworker/0:0 Not tainted 5.15.120-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 Workqueue: mld mld_ifc_work RIP: 0010:__build_skb_around net/core/skbuff.c:212 [inline] RIP: 0010:__alloc_skb+0x130/0x240 net/core/skbuff.c:443 Code: 00 41 c7 84 24 d4 00 00 00 01 00 00 00 41 c7 84 24 b8 00 00 00 00 00 00 00 41 89 94 24 bc 00 00 00 66 41 89 8c 24 b2 00 00 00 <48> c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 c7 43 10 00 00 00 RSP: 0018:ffffc90000043bf0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888274883ac0 RCX: 00000000ffffffff RDX: 00000000ffffff40 RSI: 0000000000000000 RDI: ffffea0005d220c0 RBP: 0000000000000cc0 R08: ffffc90000043ba8 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000018 R12: ffff88810afbc200 R13: 00000000ffffffff R14: 0000000000000000 R15: ffff8881085fc300 FS: 0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888274883ac0 CR3: 0000000174a57000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: alloc_skb include/linux/skbuff.h:1167 [inline] alloc_skb_with_frags+0x46/0x1a0 net/core/skbuff.c:6121 sock_alloc_send_pskb+0x1ea/0x230 net/core/sock.c:2497 mld_newpack.isra.0+0x76/0x190 net/ipv6/mcast.c:1748 add_grhead+0x85/0xa0 net/ipv6/mcast.c:1851 skb_availroom include/linux/skbuff.h:2509 [inline] add_grec+0x479/0x4c0 net/ipv4/igmp.c:495 mld_send_cr net/ipv6/mcast.c:2115 [inline] mld_ifc_work+0x15a/0x460 net/ipv6/mcast.c:2653 process_one_work+0x252/0x440 kernel/workqueue.c:2307 worker_thread+0x4d/0x330 kernel/workqueue.c:2454 kthread+0x10b/0x130 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 Modules linked in: CR2: ffff888274883ac0 ---[ end trace 322fd8796facec8f ]--- RIP: 0010:__build_skb_around net/core/skbuff.c:212 [inline] RIP: 0010:__alloc_skb+0x130/0x240 net/core/skbuff.c:443 Code: 00 41 c7 84 24 d4 00 00 00 01 00 00 00 41 c7 84 24 b8 00 00 00 00 00 00 00 41 89 94 24 bc 00 00 00 66 41 89 8c 24 b2 00 00 00 <48> c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 c7 43 10 00 00 00 RSP: 0018:ffffc90000043bf0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888274883ac0 RCX: 00000000ffffffff RDX: 00000000ffffff40 RSI: 0000000000000000 RDI: ffffea0005d220c0 RBP: 0000000000000cc0 R08: ffffc90000043ba8 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000018 R12: ffff88810afbc200 R13: 00000000ffffffff R14: 0000000000000000 R15: ffff8881085fc300 FS: 0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888274883ac0 CR3: 0000000174a57000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 41 c7 add %al,-0x39(%rcx) 3: 84 24 d4 test %ah,(%rsp,%rdx,8) 6: 00 00 add %al,(%rax) 8: 00 01 add %al,(%rcx) a: 00 00 add %al,(%rax) c: 00 41 c7 add %al,-0x39(%rcx) f: 84 24 b8 test %ah,(%rax,%rdi,4) 12: 00 00 add %al,(%rax) 14: 00 00 add %al,(%rax) 16: 00 00 add %al,(%rax) 18: 00 41 89 add %al,-0x77(%rcx) 1b: 94 xchg %eax,%esp 1c: 24 bc and $0xbc,%al 1e: 00 00 add %al,(%rax) 20: 00 66 41 add %ah,0x41(%rsi) 23: 89 8c 24 b2 00 00 00 mov %ecx,0xb2(%rsp) * 2a: 48 c7 03 00 00 00 00 movq $0x0,(%rbx) <-- trapping instruction 31: 48 c7 43 08 00 00 00 movq $0x0,0x8(%rbx) 38: 00 39: 48 rex.W 3a: c7 .byte 0xc7 3b: 43 10 00 rex.XB adc %al,(%r8)