ci starts bisection 2025-02-07 11:26:01.541257115 +0000 UTC m=+104.393244585 bisecting cause commit starting from 808eb958781e4ebb6e9c0962af2e856767e20f45 building syzkaller on 577d049b4ea56e459da6e49f4b92fc1981c92440 fetch other tags and check if the commit is present ensuring issue is reproducible on original commit 808eb958781e4ebb6e9c0962af2e856767e20f45 testing commit 808eb958781e4ebb6e9c0962af2e856767e20f45 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1aea92bfbf29a994e413899381c0d341aac732a6194875284cd3591b07329edc all runs: crashed: general protection fault in __timer_delete_sync representative crash: general protection fault in __timer_delete_sync, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 808eb958781e4ebb6e9c0962af2e856767e20f45 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 07b06c0ba36cbb91754c46b873ce0ed9549bf3a9b725d8fedfecc4232aa5f66c all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync representative crash: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed kconfig minimization: base=4063 full=8261 leaves diff=2115 split chunks (needed=false): <2115> split chunk #0 of len 2115 into 5 parts testing without sub-chunk 1/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 808eb958781e4ebb6e9c0962af2e856767e20f45 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: edcbe93acdc5ec646827a600dc2e7c1a865f3ad0f427c016438c4491bee2c8ed all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 808eb958781e4ebb6e9c0962af2e856767e20f45 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6d1537e0db43f8996050f46bd6eb3ee94517d1034a29997959d7e4a162ab4f6c all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync representative crash: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 808eb958781e4ebb6e9c0962af2e856767e20f45 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 18fc7a370ee5d2c2cdb4ae17d0e9bb9ab01aaa46bd7f2badcae335546fc09ded all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync representative crash: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 808eb958781e4ebb6e9c0962af2e856767e20f45 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: feeff713948d9b8c4a6f6fb5192e31ca2cb840cfeb02e44508cbfee04ceb7ff1 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync representative crash: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync, 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 808eb958781e4ebb6e9c0962af2e856767e20f45 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d6f75cbc232f9d8bb801e8e2200a375450876797a7a76a1f093bdc4ef46ba046 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync representative crash: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync, types: [UNKNOWN] the chunk can be dropped minimized to 423 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_BINDER_IPC ANON_VMA_NAME APERTURE_HELPERS APPLE_MFI_FASTCHARGE AR5523 ARCH_ENABLE_MEMORY_HOTREMOVE ARCH_ENABLE_THP_MIGRATION ARCH_HAS_EXECMEM_ROX 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 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 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 CRC4 CRC64 CRC7 CRC8 CRC_ITU_T CRC_T10DIF CRC_T10DIF_ARCH 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_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_ECDH CRYPTO_ECRDSA CRYPTO_ENGINE CRYPTO_ESSIV CRYPTO_FCRYPT CRYPTO_GHASH_CLMUL_NI_INTEL CRYPTO_HCTR2 CRYPTO_KDF800108_CTR 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_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_DEFAULT_FBDEV 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 DRM_FBDEV_EMULATION DRM_GEM_SHMEM_HELPER DRM_GM12U320 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 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 [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed picked [v6.13 v6.12 v6.11 v6.9 v6.7 v6.5 v6.3 v6.1 v5.18 v5.15 v5.12 v5.9 v5.6 v5.3 v5.0 v4.19] out of 36 release tags testing release v6.13 testing commit ffd294d346d185b70e28b1a28abe367bbfe53c04 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bb85c567569fdf909ab703586c69dcf5e37d57c8eb578119b05ba303fa99d6da all runs: OK false negative chance: 0.000 # git bisect start 808eb958781e4ebb6e9c0962af2e856767e20f45 ffd294d346d185b70e28b1a28abe367bbfe53c04 Bisecting: 6004 revisions left to test after this (roughly 13 steps) [454cb97726fe62a04b187a0d631ec0a69f6b713a] Merge tag 'v6.14-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 testing commit 454cb97726fe62a04b187a0d631ec0a69f6b713a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3d9f09d833a678b61c3fa563ed97bb5214755f8f317494d995c3d44b72f8ec46 all runs: OK false negative chance: 0.000 # git bisect good 454cb97726fe62a04b187a0d631ec0a69f6b713a Bisecting: 2923 revisions left to test after this (roughly 12 steps) [13845bdc869f136f92ad3d40ea09b867bb4ce467] Merge tag 'char-misc-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc testing commit 13845bdc869f136f92ad3d40ea09b867bb4ce467 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c0cf1ab28c69b47b33e07eda4d7e9b0f911040c179ce179dc876b9acdf0c215a all runs: OK false negative chance: 0.000 # git bisect good 13845bdc869f136f92ad3d40ea09b867bb4ce467 Bisecting: 1437 revisions left to test after this (roughly 11 steps) [5047e3555477ca0723f3e6e6afca1218eb9e9344] Merge branch 'mm-everything' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm testing commit 5047e3555477ca0723f3e6e6afca1218eb9e9344 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a3f9c6a044cb4ecb4e078599362fe1ebdb5bdd76f0a4b8a8f3da05b6c0df6237 all runs: OK false negative chance: 0.000 # git bisect good 5047e3555477ca0723f3e6e6afca1218eb9e9344 Bisecting: 794 revisions left to test after this (roughly 10 steps) [d1f3ee77dca0ec13753f6fc3974247e837a3594f] Merge branch 'drm-next' of https://gitlab.freedesktop.org/agd5f/linux testing commit d1f3ee77dca0ec13753f6fc3974247e837a3594f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2f752b7e5548f2f3d910da627075aca3c61258f0b55e57e2dd0114ff46f63785 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync representative crash: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync, types: [UNKNOWN] # git bisect bad d1f3ee77dca0ec13753f6fc3974247e837a3594f Bisecting: 305 revisions left to test after this (roughly 8 steps) [5edca7724e10593e7c3bcf558553e514773dac41] Merge branch 'fs-next' of linux-next testing commit 5edca7724e10593e7c3bcf558553e514773dac41 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f8ee9bd1482582f032a7a905f509bfc0c20a80a1cbffb2ec2bb9b7069ddfc9e6 all runs: OK false negative chance: 0.000 # git bisect good 5edca7724e10593e7c3bcf558553e514773dac41 Bisecting: 154 revisions left to test after this (roughly 7 steps) [94cc818950898bc22c82b8fbc5733b488cc81f4d] Merge branch 'cpufreq/arm/linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm.git testing commit 94cc818950898bc22c82b8fbc5733b488cc81f4d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 75cb5347adc8f9bf735a93fa6633766d126cca691ea6f247350cf4d70f46af2b all runs: OK false negative chance: 0.000 # git bisect good 94cc818950898bc22c82b8fbc5733b488cc81f4d Bisecting: 76 revisions left to test after this (roughly 6 steps) [aee595f7f0962be18de5f130fd5c2c9781753abd] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next.git testing commit aee595f7f0962be18de5f130fd5c2c9781753abd gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 93db98f830a401d3de0623253b5fddfbb7ed2a699f6832d5e52c0f5bdf8465f3 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync representative crash: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync, types: [UNKNOWN] # git bisect bad aee595f7f0962be18de5f130fd5c2c9781753abd Bisecting: 40 revisions left to test after this (roughly 5 steps) [702cffc7957f7cc4c83f1ec73002782590aaed88] Merge branch 'main' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git testing commit 702cffc7957f7cc4c83f1ec73002782590aaed88 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c6fc33da0ac79bcde9feb62d19dd578d1c4f9688ecb425eab75bb5b6e4344c60 all runs: OK false negative chance: 0.000 # git bisect good 702cffc7957f7cc4c83f1ec73002782590aaed88 Bisecting: 23 revisions left to test after this (roughly 4 steps) [37d0ec8e50cac4fd2ea7734b7e2d5c8be8f2a8a7] Bluetooth: btintel_pcie: Fix a potential race condition testing commit 37d0ec8e50cac4fd2ea7734b7e2d5c8be8f2a8a7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6469a90bc3639f5cbe6226d7cd5a6fdd1da2a095ed3b8fe13023885860f9153e all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync representative crash: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync, types: [UNKNOWN] # git bisect bad 37d0ec8e50cac4fd2ea7734b7e2d5c8be8f2a8a7 Bisecting: 8 revisions left to test after this (roughly 3 steps) [6ab54a7171894394fa07f28f835d714967b39797] Bluetooth: L2CAP: Fix slab-use-after-free Read in l2cap_send_cmd testing commit 6ab54a7171894394fa07f28f835d714967b39797 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 44b8bd2868faae77000e88212a8437bd03d634622e44b7f03ae49952c149ebcf run #0: ignore: lost connection to test machine run #1: ignore: lost connection to test machine run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK false negative chance: 0.000 # git bisect good 6ab54a7171894394fa07f28f835d714967b39797 Bisecting: 4 revisions left to test after this (roughly 2 steps) [55b8d4c01dde95f9c2d1f560094e279b78e105d7] Bluetooth: MGMT: Remove unused mgmt_*_discovery_complete testing commit 55b8d4c01dde95f9c2d1f560094e279b78e105d7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7426dee299d38f2162de0c1a4a50f38677be766e2475e19a75d8be92711b7a33 run #0: ignore: lost connection to test machine 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 false negative chance: 0.000 # git bisect good 55b8d4c01dde95f9c2d1f560094e279b78e105d7 Bisecting: 2 revisions left to test after this (roughly 1 step) [56cec66d6163705621dd797e227de7151bd22a6b] Bluetooth: L2CAP: accept zero as a special value for MTU auto-selection testing commit 56cec66d6163705621dd797e227de7151bd22a6b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 658855526e2dc415f6f2ea46955be33d3abf62738aa4cc23a9186f24cc45a17e run #0: ignore: lost connection to test machine run #1: ignore: lost connection to test machine run #2: ignore: lost connection to test machine run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK false negative chance: 0.000 # git bisect good 56cec66d6163705621dd797e227de7151bd22a6b Bisecting: 0 revisions left to test after this (roughly 1 step) [c411c62cc13319533b1861e00cedc4883c3bc1bb] Bluetooth: hci_uart: fix race during initialization testing commit c411c62cc13319533b1861e00cedc4883c3bc1bb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7566d9f84f916102dfebad95add12652409e7e1ba564a1f2725235ef8d90a1b7 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync representative crash: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync, types: [UNKNOWN] # git bisect bad c411c62cc13319533b1861e00cedc4883c3bc1bb Bisecting: 0 revisions left to test after this (roughly 0 steps) [e3d78d54bed506d7bc38f7d069631be0d9d0fea0] Bluetooth: btintel: Add DSBR support for ScP testing commit e3d78d54bed506d7bc38f7d069631be0d9d0fea0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 97b2e9c998bc0fae46d7b7ae283edbc10f90ba8e53cb83d9b24744d02d1008c8 run #0: ignore: lost connection to test machine 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 false negative chance: 0.000 # git bisect good e3d78d54bed506d7bc38f7d069631be0d9d0fea0 c411c62cc13319533b1861e00cedc4883c3bc1bb is the first bad commit commit c411c62cc13319533b1861e00cedc4883c3bc1bb Author: Arseniy Krasnov Date: Thu Jan 30 21:43:26 2025 +0300 Bluetooth: hci_uart: fix race during initialization 'hci_register_dev()' calls power up function, which is executed by kworker - 'hci_power_on()'. This function does access to bluetooth chip using callbacks from 'hci_ldisc.c', for example 'hci_uart_send_frame()'. Now 'hci_uart_send_frame()' checks 'HCI_UART_PROTO_READY' bit set, and if not - it fails. Problem is that 'HCI_UART_PROTO_READY' is set after 'hci_register_dev()', and there is tiny chance that 'hci_power_on()' will be executed before setting this bit. In that case HCI init logic fails. Patch moves setting of 'HCI_UART_PROTO_READY' before calling function 'hci_uart_register_dev()'. Signed-off-by: Arseniy Krasnov Signed-off-by: Luiz Augusto von Dentz drivers/bluetooth/hci_ldisc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) accumulated error probability: 0.00 culprit signature: 7566d9f84f916102dfebad95add12652409e7e1ba564a1f2725235ef8d90a1b7 parent signature: 97b2e9c998bc0fae46d7b7ae283edbc10f90ba8e53cb83d9b24744d02d1008c8 revisions tested: 22, total time: 8h38m44.895992677s (build: 4h54m36.461580725s, test: 3h18m54.016111138s) first bad commit: c411c62cc13319533b1861e00cedc4883c3bc1bb Bluetooth: hci_uart: fix race during initialization recipients (to): ["avkrasnov@salutedevices.com" "linux-bluetooth@vger.kernel.org" "luiz.dentz@gmail.com" "luiz.von.dentz@intel.com" "marcel@holtmann.org"] recipients (cc): ["linux-kernel@vger.kernel.org"] crash: BUG: unable to handle kernel NULL pointer dereference in __timer_delete_sync BUG: kernel NULL pointer dereference, address: 0000000000000338 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 800000010c701067 P4D 800000010c701067 PUD 0 Oops: Oops: 0000 [#1] PREEMPT SMP PTI CPU: 1 UID: 0 PID: 3367 Comm: syz.2.16 Not tainted 6.13.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:__lock_acquire+0x2e/0x4e0 kernel/locking/lockdep.c:5089 Code: 56 41 55 41 54 53 48 83 ec 18 65 4c 8b 34 25 c0 01 03 00 83 3d 92 5a ca 02 00 0f 84 20 02 00 00 49 89 ff 48 c7 c0 28 2b a5 84 <48> 39 07 0f 84 0d 02 00 00 4d 89 cd 89 cd 89 d1 83 fe 01 77 0c 89 RSP: 0018:ffffc90002fbfc50 EFLAGS: 00010002 RAX: ffffffff84a52b28 RBX: 0000000000000046 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000338 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff82384650 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888107ae1b80 R15: 0000000000000338 FS: 0000555572b2d500(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000338 CR3: 000000010ffc4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0xd9/0x1f0 kernel/locking/lockdep.c:5849 __timer_delete_sync+0x54/0xe0 kernel/time/timer.c:1648 del_timer_sync include/linux/timer.h:185 [inline] h5_close+0x1d/0xb0 drivers/bluetooth/hci_h5.c:257 hci_uart_tty_close+0xb6/0x120 drivers/bluetooth/hci_ldisc.c:557 tty_ldisc_close drivers/tty/tty_ldisc.c:455 [inline] tty_ldisc_kill+0x66/0xc0 drivers/tty/tty_ldisc.c:613 tty_ldisc_release+0xc9/0x120 drivers/tty/tty_ldisc.c:781 tty_release_struct+0x10/0x80 drivers/tty/tty_io.c:1690 tty_release+0x4ef/0x640 drivers/tty/tty_io.c:1861 __fput+0x86/0x2a0 fs/file_table.c:450 task_work_run+0x82/0xb0 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] 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+0xa3/0x1b0 kernel/entry/common.c:218 do_syscall_64+0x9a/0x190 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcda978cde9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc56bd9a78 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007fcda99a7ba0 RCX: 00007fcda978cde9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007fcda99a7ba0 R08: 0000000000000000 R09: 0000000456bd9d6f R10: 000000000003fdbc R11: 0000000000000246 R12: 0000000000010024 R13: 00007ffc56bd9b70 R14: ffffffffffffffff R15: 00007ffc56bd9b90 Modules linked in: CR2: 0000000000000338 ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0x2e/0x4e0 kernel/locking/lockdep.c:5089 Code: 56 41 55 41 54 53 48 83 ec 18 65 4c 8b 34 25 c0 01 03 00 83 3d 92 5a ca 02 00 0f 84 20 02 00 00 49 89 ff 48 c7 c0 28 2b a5 84 <48> 39 07 0f 84 0d 02 00 00 4d 89 cd 89 cd 89 d1 83 fe 01 77 0c 89 RSP: 0018:ffffc90002fbfc50 EFLAGS: 00010002 RAX: ffffffff84a52b28 RBX: 0000000000000046 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000338 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff82384650 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888107ae1b80 R15: 0000000000000338 FS: 0000555572b2d500(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000338 CR3: 000000010ffc4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 56 push %rsi 1: 41 55 push %r13 3: 41 54 push %r12 5: 53 push %rbx 6: 48 83 ec 18 sub $0x18,%rsp a: 65 4c 8b 34 25 c0 01 mov %gs:0x301c0,%r14 11: 03 00 13: 83 3d 92 5a ca 02 00 cmpl $0x0,0x2ca5a92(%rip) # 0x2ca5aac 1a: 0f 84 20 02 00 00 je 0x240 20: 49 89 ff mov %rdi,%r15 23: 48 c7 c0 28 2b a5 84 mov $0xffffffff84a52b28,%rax * 2a: 48 39 07 cmp %rax,(%rdi) <-- trapping instruction 2d: 0f 84 0d 02 00 00 je 0x240 33: 4d 89 cd mov %r9,%r13 36: 89 cd mov %ecx,%ebp 38: 89 d1 mov %edx,%ecx 3a: 83 fe 01 cmp $0x1,%esi 3d: 77 0c ja 0x4b 3f: 89 .byte 0x89