ci2 starts bisection 2025-05-19 13:35:28.450589768 +0000 UTC m=+8392.323965207 bisecting fixing commit since a0e3919a2df29b373b19a8fbd6e4c4c38fc10d87 building syzkaller on 7cbfbb3ab457b0a8ecf525a27a65a2078c5dcaa8 ensuring issue is reproducible on original commit a0e3919a2df29b373b19a8fbd6e4c4c38fc10d87 testing commit a0e3919a2df29b373b19a8fbd6e4c4c38fc10d87 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 7c71bb2ed30e82933c81a2a9289f841c646a0eec7052d8c8bc93b00b2b4ab16f run #0: crashed: WARNING: locking bug in rcu_pending_exit run #1: crashed: WARNING in __srcu_check_read_flavor run #2: crashed: WARNING: locking bug in rcu_pending_pcpu_dequeue run #3: crashed: WARNING: locking bug in rcu_pending_exit run #4: crashed: WARNING: locking bug in rcu_pending_pcpu_dequeue run #5: crashed: WARNING: locking bug in rcu_pending_pcpu_dequeue run #6: crashed: WARNING: locking bug in rcu_pending_exit run #7: crashed: WARNING: locking bug in rcu_pending_exit run #8: crashed: WARNING in srcu_invoke_callbacks run #9: crashed: WARNING: locking bug in rcu_pending_exit run #10: crashed: WARNING: locking bug in rcu_pending_exit run #11: crashed: WARNING: locking bug in rcu_pending_pcpu_dequeue run #12: crashed: INFO: task hung in synchronize_rcu run #13: crashed: WARNING: locking bug in rcu_pending_exit run #14: crashed: WARNING: locking bug in rcu_pending_exit run #15: crashed: WARNING in __srcu_check_read_flavor run #16: crashed: INFO: task hung in synchronize_rcu run #17: crashed: WARNING: locking bug in rcu_pending_exit run #18: crashed: WARNING: locking bug in rcu_pending_exit run #19: OK representative crash: WARNING: locking bug in rcu_pending_exit, types: [LOCKDEP] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing commit a0e3919a2df29b373b19a8fbd6e4c4c38fc10d87 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: adce879483ff1e79c3d79791eda55cfb2dc5a1f21ad066e82c5ab0e0978f338d run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in detach_if_pending run #1: crashed: BUG: unable to handle kernel paging request in process_srcu run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in dst_dev_put run #3: crashed: general protection fault in get_work_pool run #4: crashed: general protection fault in get_work_pool run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: BUG: unable to handle kernel NULL pointer dereference in detach_if_pending, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed kconfig minimization: base=4080 full=8235 leaves diff=2142 split chunks (needed=false): <2142> split chunk #0 of len 2142 into 5 parts testing without sub-chunk 1/5 disabling configs for [BUG KASAN ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit a0e3919a2df29b373b19a8fbd6e4c4c38fc10d87 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: cf7c6a7bcecfbf4e0524054c0604c9cc94d62064ceb9e0f8612d3dae95390550 all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit a0e3919a2df29b373b19a8fbd6e4c4c38fc10d87 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: a8cfdcc7719cdd14d51deb0fa2e6ba7116e0e84676f38af59e37d377490b5b4a run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in detach_if_pending run #1: crashed: general protection fault in get_work_pool run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in dst_dev_put run #3: basic kernel testing failed: failed to copy binary to VM: failed to run ["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-executor3086624516" "root@10.128.0.148:./syz-executor3086624516"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.0.148, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u5, OpenSSL 3.0.15 3 Sep 2024 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.0.148 [10.128.0.148] 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+deb12u5 Connection timed out during banner exchange Connection to 10.128.0.148 port 22 timed out scp: Connection closed run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: BUG: unable to handle kernel NULL pointer dereference in detach_if_pending, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP HANG], they are not needed testing commit a0e3919a2df29b373b19a8fbd6e4c4c38fc10d87 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 10890500e63ae490c2c93817e437a5bd3a59f4ce2bb7dce9b8566a05a28baa98 run #0: crashed: general protection fault in bch2_fs_release run #1: crashed: BUG: unable to handle kernel paging request in process_srcu run #2: crashed: general protection fault in bch2_fs_btree_interior_update_exit run #3: crashed: BUG: unable to handle kernel paging request in bch2_fs_btree_iter_exit run #4: crashed: BUG: unable to handle kernel paging request in bch2_fs_btree_iter_exit run #5: crashed: general protection fault in bch2_fs_btree_interior_update_exit run #6: crashed: general protection fault in bch2_fs_journal_exit run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in detach_if_pending run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in detach_if_pending 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" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1581567389" "root@10.128.10.44:./syz-executor1581567389"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.44, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u5, OpenSSL 3.0.15 3 Sep 2024 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.44 [10.128.10.44] 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+deb12u5 Connection timed out during banner exchange Connection to 10.128.10.44 port 22 timed out scp: Connection closed run #10: basic kernel testing failed: failed to copy binary to VM: failed to run ["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-executor633993370" "root@10.128.1.132:./syz-executor633993370"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.132, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u5, OpenSSL 3.0.15 3 Sep 2024 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.132 [10.128.1.132] 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+deb12u5 Connection timed out during banner exchange Connection to 10.128.1.132 port 22 timed out scp: Connection closed run #11: crashed: BUG: unable to handle kernel NULL pointer dereference in __fib6_drop_pcpu_from run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: general protection fault in bch2_fs_release, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit a0e3919a2df29b373b19a8fbd6e4c4c38fc10d87 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: fae5ac9f7a80caa979e3c9a28a8f34a3da063b8d70b352eec1044503d56d4697 run #0: crashed: BUG: Bad rss-counter state run #1: crashed: BUG: unable to handle kernel paging request in rcu_segcblist_advance run #2: crashed: BUG: spinlock cpu recursion in rcu_pending_exit run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in dst_dev_put run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in detach_if_pending run #5: crashed: BUG: workqueue lockup run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in dst_dev_put run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in dst_dev_put 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" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor297911475" "root@10.128.1.46:./syz-executor297911475"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.1.46, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u5, OpenSSL 3.0.15 3 Sep 2024 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.1.46 [10.128.1.46] port 22. debug1: connect to address 10.128.1.46 port 22: Connection timed out ssh: connect to host 10.128.1.46 port 22: Connection timed out scp: Connection closed run #9: crashed: BUG: workqueue lockup run #10: crashed: BUG: unable to handle kernel NULL pointer dereference in bch2_fs_btree_iter_exit run #11: crashed: BUG: workqueue lockup run #12: crashed: BUG: unable to handle kernel paging request in process_srcu run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: BUG: Bad rss-counter state, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [BUG KASAN ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit a0e3919a2df29b373b19a8fbd6e4c4c38fc10d87 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 251fac149378ca8b4ad88db31f7788a244e3ec84a16885200658046796be5f07 run #0: crashed: general protection fault in bch2_fs_release run #1: crashed: BUG: unable to handle kernel paging request in bch2_fs_btree_iter_exit run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in rcu_pending_exit run #3: crashed: BUG: unable to handle kernel paging request in process_srcu run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in detach_if_pending run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in __put_partials run #6: basic kernel testing failed: failed to copy binary to VM: failed to run ["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-executor2169267251" "root@10.128.0.32:./syz-executor2169267251"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.0.32, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u5, OpenSSL 3.0.15 3 Sep 2024 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.0.32 [10.128.0.32] port 22. debug1: connect to address 10.128.0.32 port 22: Connection timed out ssh: connect to host 10.128.0.32 port 22: Connection timed out scp: Connection closed run #7: crashed: BUG: workqueue lockup run #8: crashed: BUG: workqueue lockup run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in mempool_init_node run #10: crashed: BUG: unable to handle kernel NULL pointer dereference in mempool_init_node run #11: OK run #12: OK run #13: OK run #14: crashed: BUG: workqueue lockup run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: general protection fault in bch2_fs_release, types: [UNKNOWN] the chunk can be dropped minimized to 429 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_NHLT 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_MEMORY_HOTREMOVE ARCH_ENABLE_THP_MIGRATION ARCH_HAS_USER_SHADOW_STACK ARCH_SUPPORTS_HUGE_PFNMAP ARCH_SUPPORTS_PMD_PFNMAP ARCH_SUPPORTS_PUD_PFNMAP ARCH_WANT_PMD_MKWRITE ASM_MODVERSIONS ASUS_TF103C_DOCK ASYNC_CORE ASYNC_MEMCPY ASYNC_PQ ASYNC_RAID6_RECOV ASYNC_TX_DMA ASYNC_XOR AS_SHA1_NI AS_SHA256_NI AS_TPAUSE ATARI_PARTITION ATA_GENERIC ATA_OVER_ETH ATH10K ATH10K_CE ATH10K_LEDS 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 BCACHEFS_DEBUG BCACHEFS_ERASURE_CODING BCACHEFS_FS BCACHEFS_POSIX_ACL BCACHEFS_QUOTA BCACHEFS_SIX_OPTIMISTIC_SPIN 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_DEV_BSGLIB BLK_DEV_INTEGRITY 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_NF_EBTABLES_LEGACY 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_HCIBCM203X BT_HCIBFUSB BT_HCIBPA10X BT_HCIBTUSB BT_HCIBTUSB_AUTOSUSPEND 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_INTEL BT_LE BT_LEDS BT_LE_L2CAP_ECRED BT_MRVL BT_MRVL_SDIO BT_MSFTEXT BT_MTK BT_MTKSDIO BT_MTKUART 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_F81604 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_UCAN CAN_VCAN CAN_VXCAN CARL9170 CARL9170_HWRNG CARL9170_LEDS CARL9170_WPC CC_HAS_AUTO_VAR_INIT_ZERO_ENABLER CC_HAS_SANE_STACKPROTECTOR 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_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 CLOSURES CLS_U32_MARK CLS_U32_PERF CMA CMA_SIZE_SEL_MAX 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 CRC32_SLICEBY8 CRC4 CRC64 CRC64_ROCKSOFT CRC7 CRC8 CRC_ITU_T CRC_T10DIF CRYPTO_842 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 CRYPTO_CRC32C_INTEL CRYPTO_CRC32_PCLMUL CRYPTO_CRC64_ROCKSOFT CRYPTO_CRCT10DIF CRYPTO_CRCT10DIF_PCLMUL CRYPTO_CRYPTD 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_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_LZ4 CRYPTO_LZ4HC 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_SHA512_SSSE3 CRYPTO_SIMD 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 CRYPTO_ZSTD CUSE CYPRESS_FIRMWARE DAMON DAMON_PADDR DAMON_RECLAIM DAMON_VADDR DAX DCA DCB DEFAULT_CODEL DEVICE_MIGRATION DEVICE_PRIVATE DEV_COREDUMP DEV_DAX 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_AUX_BRIDGE DRM_BOCHS DRM_BRIDGE DRM_BUDDY DRM_CIRRUS_QEMU DRM_CLIENT DRM_CLIENT_LIB DRM_CLIENT_SELECTION DRM_CLIENT_SETUP DRM_DEBUG_MM DRM_DISPLAY_DP_AUX_BUS DRM_DISPLAY_DP_HELPER DRM_DISPLAY_DSC_HELPER DRM_DISPLAY_HDCP_HELPER DRM_DISPLAY_HDMI_HELPER DRM_DISPLAY_HELPER ENCRYPTED_KEYS FSCACHE FUSE_FS GPIOLIB HAMRADIO HID_DRAGONRISE IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_RTRS_CLIENT IOSCHED_BFQ LIBNVDIMM MAC80211 MAC80211_DEBUGFS MAC80211_LEDS MCORE2 MEDIA_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MMC 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 WLAN WLAN_VENDOR_ATH X86_X32_ABI ZONE_DEVICE] disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing current HEAD a5806cd506af5a7c19bcd596e4708b5c464bfd21 testing commit a5806cd506af5a7c19bcd596e4708b5c464bfd21 gcc compiler: Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2 kernel signature: 3242eaef6716cc9ade983d1e24803fe8f3ad7e12fb90d21b6ad81e7cebc90eb4 run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in srcu_gp_start_if_needed run #1: crashed: BUG: unable to handle kernel paging request in bch2_current_has_btree_trans run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in bch2_trans_put run #3: crashed: BUG: unable to handle kernel paging request in bch2_fs_btree_iter_exit run #4: crashed: general protection fault in rcu_cblist_dequeue run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in srcu_gp_start_if_needed run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in rcu_pending_pcpu_dequeue run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in rcu_pending_exit run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in srcu_gp_start_if_needed run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in srcu_gp_start_if_needed run #10: crashed: general protection fault in rcu_cblist_dequeue run #11: crashed: BUG: workqueue lockup run #12: crashed: general protection fault in rcu_cblist_dequeue run #13: basic kernel testing failed: failed to copy binary to VM: failed to run ["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-executor345948862" "root@10.128.10.59:./syz-executor345948862"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.59, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u5, OpenSSL 3.0.15 3 Sep 2024 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.59 [10.128.10.59] 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+deb12u5 Connection timed out during banner exchange Connection to 10.128.10.59 port 22 timed out scp: Connection closed run #14: crashed: BUG: unable to handle kernel NULL pointer dereference in __put_partials run #15: OK run #16: OK run #17: OK run #18: crashed: BUG: unable to handle kernel NULL pointer dereference in srcu_gp_start_if_needed run #19: crashed: BUG: workqueue lockup representative crash: BUG: unable to handle kernel NULL pointer dereference in srcu_gp_start_if_needed, types: [UNKNOWN] crash still not fixed/happens on the oldest tested release reproducer is flaky (0.58 repro chance estimate) revisions tested: 8, total time: 2h26m47.115402326s (build: 43m19.592769768s, test: 1h38m18.368069266s) crash still not fixed or there were kernel test errors commit msg: Linux 6.15-rc7 crash: BUG: unable to handle kernel NULL pointer dereference in srcu_gp_start_if_needed bcachefs (loop4): shutdown complete BUG: kernel NULL pointer dereference, address: 00000000000000c4 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 8000000104759067 P4D 8000000104759067 PUD 0 Oops: Oops: 0000 [#1] SMP PTI CPU: 1 UID: 0 PID: 2957 Comm: syz-executor Not tainted 6.15.0-rc7-syzkaller #0 PREEMPT(undef) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:check_wait_context kernel/locking/lockdep.c:4855 [inline] RIP: 0010:__lock_acquire+0x281/0x20e0 kernel/locking/lockdep.c:5185 Code: 8c 04 73 10 48 69 c1 c8 00 00 00 48 8d 80 00 4e 6d 85 eb 16 83 3d 2e 62 90 0a 00 75 0b 90 e8 f6 33 a4 00 48 8b 3c 24 90 31 c0 <0f> b6 98 c4 00 00 00 41 8b 46 20 25 ff 1f 00 00 48 0f a3 05 e7 d7 RSP: 0018:ffffc900026e3ac8 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffffe8ffffc17a58 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000001040 RDI: ffff8881062a3800 RBP: 0000000000000001 R08: 0000000000048000 R09: 0000000000008000 R10: 0000000000000000 R11: 00000000000046f9 R12: 0000000000000000 R13: 0000000000008000 R14: ffff8881062a4290 R15: 0000000000008000 FS: 0000555586a6d500(0000) GS:ffff8882b30ac000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000000c4 CR3: 000000010dbfe000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0xe9/0x270 kernel/locking/lockdep.c:5866 __raw_spin_trylock include/linux/spinlock_api_smp.h:90 [inline] _raw_spin_trylock+0x47/0x80 kernel/locking/spinlock.c:138 spin_lock_irqsave_sdp_contention kernel/rcu/srcutree.c:375 [inline] srcu_gp_start_if_needed+0x112/0x690 kernel/rcu/srcutree.c:1275 __call_srcu kernel/rcu/srcutree.c:1389 [inline] __synchronize_srcu+0x237/0x280 kernel/rcu/srcutree.c:1441 bch2_fs_btree_iter_exit+0x16c/0x1b0 fs/bcachefs/btree_iter.c:3616 __bch2_fs_free fs/bcachefs/super.c:564 [inline] bch2_fs_release+0x205/0x420 fs/bcachefs/super.c:618 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x91/0x190 lib/kobject.c:737 deactivate_locked_super+0x36/0x150 fs/super.c:473 cleanup_mnt+0x7c/0x130 fs/namespace.c:1431 task_work_run+0x84/0xb0 kernel/task_work.c:227 resume_user_mode_work+0x52/0x60 include/linux/resume_user_mode.h:50 exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x92/0x110 kernel/entry/common.c:218 do_syscall_64+0xb1/0x180 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5154187047 Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffcbcfaf2e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007f515420180c RCX: 00007f5154187047 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcbcfaf3a0 RBP: 00007ffcbcfaf3a0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffcbcfb0420 R13: 00007f515420180c R14: 00007ffcbcfb0460 R15: 0000000000000009 Modules linked in: CR2: 00000000000000c4 ---[ end trace 0000000000000000 ]--- RIP: 0010:check_wait_context kernel/locking/lockdep.c:4855 [inline] RIP: 0010:__lock_acquire+0x281/0x20e0 kernel/locking/lockdep.c:5185 Code: 8c 04 73 10 48 69 c1 c8 00 00 00 48 8d 80 00 4e 6d 85 eb 16 83 3d 2e 62 90 0a 00 75 0b 90 e8 f6 33 a4 00 48 8b 3c 24 90 31 c0 <0f> b6 98 c4 00 00 00 41 8b 46 20 25 ff 1f 00 00 48 0f a3 05 e7 d7 RSP: 0018:ffffc900026e3ac8 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffffe8ffffc17a58 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000001040 RDI: ffff8881062a3800 RBP: 0000000000000001 R08: 0000000000048000 R09: 0000000000008000 R10: 0000000000000000 R11: 00000000000046f9 R12: 0000000000000000 R13: 0000000000008000 R14: ffff8881062a4290 R15: 0000000000008000 FS: 0000555586a6d500(0000) GS:ffff8882b30ac000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000000c4 CR3: 000000010dbfe000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 8c 04 73 mov %es,(%rbx,%rsi,2) 3: 10 48 69 adc %cl,0x69(%rax) 6: c1 c8 00 ror $0x0,%eax 9: 00 00 add %al,(%rax) b: 48 8d 80 00 4e 6d 85 lea -0x7a92b200(%rax),%rax 12: eb 16 jmp 0x2a 14: 83 3d 2e 62 90 0a 00 cmpl $0x0,0xa90622e(%rip) # 0xa906249 1b: 75 0b jne 0x28 1d: 90 nop 1e: e8 f6 33 a4 00 call 0xa43419 23: 48 8b 3c 24 mov (%rsp),%rdi 27: 90 nop 28: 31 c0 xor %eax,%eax * 2a: 0f b6 98 c4 00 00 00 movzbl 0xc4(%rax),%ebx <-- trapping instruction 31: 41 8b 46 20 mov 0x20(%r14),%eax 35: 25 ff 1f 00 00 and $0x1fff,%eax 3a: 48 rex.W 3b: 0f .byte 0xf 3c: a3 .byte 0xa3 3d: 05 .byte 0x5 3e: e7 d7 out %eax,$0xd7