ci2 starts bisection 2025-09-30 10:48:08.870049017 +0000 UTC m=+85945.546630091 bisecting fixing commit since dbcb8d8e4163e46066f43e2bd9a6779e594ec900 building syzkaller on fb8f743dc82ba3a879228aa71ce09fdc570665d1 ensuring issue is reproducible on original commit dbcb8d8e4163e46066f43e2bd9a6779e594ec900 testing commit dbcb8d8e4163e46066f43e2bd9a6779e594ec900 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 3e66a316a85dc35e2dfd81d900cc0da94ca07601591404388947e8ff350d6afb all runs: crashed: general protection fault in write_all_supers representative crash: general protection fault in write_all_supers, types: [DoS] check whether we can drop unnecessary instrumentation disabling configs for [locking atomic_sleep hang memleak ubsan bug_or_warning kasan], they are not needed testing commit dbcb8d8e4163e46066f43e2bd9a6779e594ec900 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 3eb9d881ac1f0772c432ea370d861cf9d40e9111ec1f85982d029d1d2109fa4c all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in write_all_supers representative crash: BUG: unable to handle kernel NULL pointer dereference in write_all_supers, types: [NULL-POINTER-DEREFERENCE] the bug reproduces without the instrumentation disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed kconfig minimization: base=3913 full=7800 leaves diff=2160 split chunks (needed=false): <2160> split chunk #0 of len 2160 into 5 parts testing without sub-chunk 1/5 disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit dbcb8d8e4163e46066f43e2bd9a6779e594ec900 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: b10bf9f3910ed53a4f4da3a6f50c5e25e9062ec0dc731d82e4fc6241725d1fc7 all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep hang], they are not needed testing commit dbcb8d8e4163e46066f43e2bd9a6779e594ec900 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 54faf138026fd84b59c9a72489c20034b6d9c6ceee3b687a5180810c509af5da all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in write_all_supers representative crash: BUG: unable to handle kernel NULL pointer dereference in write_all_supers, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [kasan locking atomic_sleep hang memleak ubsan bug_or_warning], they are not needed testing commit dbcb8d8e4163e46066f43e2bd9a6779e594ec900 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 02cab2b80618666a69b64c87d6fe052bff0a68f29c5e377ea63b44d9bfc7ffe4 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in write_all_supers representative crash: BUG: unable to handle kernel NULL pointer dereference in write_all_supers, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [hang memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit dbcb8d8e4163e46066f43e2bd9a6779e594ec900 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 73068552bcaaf98b0a4f3ba8e6bd630da37ddf2ec71663970efa9f6f801b35f1 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in write_all_supers representative crash: BUG: unable to handle kernel NULL pointer dereference in write_all_supers, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [bug_or_warning kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit dbcb8d8e4163e46066f43e2bd9a6779e594ec900 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: e745386931d67bc26c27ec44ebf5e2e9c51ea2620b6a26c7e7820808b58838e4 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in write_all_supers representative crash: BUG: unable to handle kernel NULL pointer dereference in write_all_supers, types: [NULL-POINTER-DEREFERENCE] the chunk can be dropped minimized to 432 configs; suspects: [6LOWPAN 6LOWPAN_GHC_EXT_HDR_DEST 6LOWPAN_GHC_EXT_HDR_FRAG 6LOWPAN_GHC_EXT_HDR_HOP 6LOWPAN_GHC_EXT_HDR_ROUTE 6LOWPAN_GHC_ICMPV6 6LOWPAN_GHC_UDP 6LOWPAN_NHC 6LOWPAN_NHC_DEST 6LOWPAN_NHC_FRAGMENT 6LOWPAN_NHC_HOP 6LOWPAN_NHC_IPV6 6LOWPAN_NHC_MOBILITY 6LOWPAN_NHC_ROUTING 6LOWPAN_NHC_UDP 6PACK 842_COMPRESS 842_DECOMPRESS 9P_FSCACHE 9P_FS_POSIX_ACL 9P_FS_SECURITY ACORN_PARTITION ACORN_PARTITION_ADFS ACORN_PARTITION_CUMANA ACORN_PARTITION_EESOX ACORN_PARTITION_ICS ACORN_PARTITION_POWERTEC ACORN_PARTITION_RISCIX ACPI_NFIT ACPI_PLATFORM_PROFILE ADFS_FS AFFS_FS AFS_FS AFS_FSCACHE AF_KCM AF_RXRPC AF_RXRPC_IPV6 AIX_PARTITION AMD_SFH_HID AMIGA_PARTITION ANDROID_BINDERFS ANDROID_BINDER_IPC ANON_VMA_NAME APERTURE_HELPERS APPLE_MFI_FASTCHARGE AR5523 ARCH_ENABLE_MEMORY_HOTREMOVE ARCH_ENABLE_THP_MIGRATION 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_PCI ATH10K_USB ATH11K ATH6KL ATH6KL_USB ATH9K ATH9K_AHB ATH9K_BTCOEX_SUPPORT ATH9K_CHANNEL_CONTEXT ATH9K_COMMON ATH9K_COMMON_DEBUG ATH9K_COMMON_SPECTRAL ATH9K_DEBUGFS ATH9K_DYNACK ATH9K_HTC ATH9K_HTC_DEBUGFS ATH9K_HW ATH9K_PCI ATH9K_PCOEM ATH9K_RFKILL ATH_COMMON ATM ATM_BR2684 ATM_CLIP ATM_DRIVERS ATM_LANE ATM_MPOA ATM_TCP AUXILIARY_BUS AX25 AX25_DAMA_SLAVE AX88796B_PHY BAREUDP BATMAN_ADV BATMAN_ADV_BATMAN_V BATMAN_ADV_BLA BATMAN_ADV_DAT BATMAN_ADV_MCAST BATMAN_ADV_NC BCACHE BCMA BCMA_HOST_PCI_POSSIBLE BEFS_FS BFQ_CGROUP_DEBUG BFQ_GROUP_IOSCHED BFS_FS BIG_KEYS BLK_CGROUP_PUNT_BIO BLK_CGROUP_RWSTAT BLK_DEBUG_FS_ZONED BLK_DEV_BSGLIB BLK_DEV_INTEGRITY BLK_DEV_INTEGRITY_T10 BLK_DEV_NBD BLK_DEV_NULL_BLK BLK_DEV_NULL_BLK_FAULT_INJECTION BLK_DEV_NVME BLK_DEV_PMEM BLK_DEV_RAM BLK_DEV_RNBD BLK_DEV_RNBD_CLIENT BLK_DEV_THROTTLING BLK_ICQ BLK_INLINE_ENCRYPTION BLK_INLINE_ENCRYPTION_FALLBACK BLK_WBT BLK_WBT_MQ BONDING BOOT_VESA_SUPPORT BPF_EVENTS BPF_JIT BPF_JIT_ALWAYS_ON BPF_JIT_DEFAULT_ON BPF_LSM BPF_PRELOAD BPF_PRELOAD_UMD BPF_SYSCALL BPQETHER BRIDGE BRIDGE_CFM BRIDGE_EBT_802_3 BRIDGE_EBT_AMONG BRIDGE_EBT_ARP BRIDGE_EBT_ARPREPLY BRIDGE_EBT_BROUTE BRIDGE_EBT_DNAT BRIDGE_EBT_IP BRIDGE_EBT_IP6 BRIDGE_EBT_LIMIT BRIDGE_EBT_LOG BRIDGE_EBT_MARK BRIDGE_EBT_MARK_T BRIDGE_EBT_NFLOG BRIDGE_EBT_PKTTYPE BRIDGE_EBT_REDIRECT BRIDGE_EBT_SNAT BRIDGE_EBT_STP BRIDGE_EBT_T_FILTER BRIDGE_EBT_T_NAT BRIDGE_EBT_VLAN BRIDGE_IGMP_SNOOPING BRIDGE_MRP BRIDGE_NF_EBTABLES BRIDGE_VLAN_FILTERING BSD_DISKLABEL BSD_PROCESS_ACCT_V3 BT BTRFS_ASSERT BTRFS_FS BTRFS_FS_POSIX_ACL BTRFS_FS_REF_VERIFY BTT BT_6LOWPAN BT_ATH3K BT_BCM BT_BNEP BT_BNEP_MC_FILTER BT_BNEP_PROTO_FILTER BT_BREDR BT_CMTP BT_HCIBCM203X BT_HCIBFUSB BT_HCIBPA10X BT_HCIBTUSB BT_HCIBTUSB_AUTOSUSPEND BT_HCIBTUSB_BCM BT_HCIBTUSB_MTK BT_HCIBTUSB_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_MSFTEXT BT_MTK BT_QCA BT_RFCOMM BT_RFCOMM_TTY BT_RTL CACHEFILES CAIF CAIF_DEBUG CAIF_DRIVERS CAIF_NETDEV CAIF_TTY CAIF_USB CAIF_VIRTIO CAN CAN_8DEV_USB CAN_BCM CAN_CALC_BITTIMING CAN_DEV CAN_EMS_USB CAN_ESD_USB CAN_ETAS_ES58X CAN_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 CAPI_TRACE CARL9170 CARL9170_HWRNG CARL9170_LEDS CARL9170_WPC CEC_CORE CEPH_FS CEPH_FSCACHE CEPH_FS_POSIX_ACL CEPH_LIB CEPH_LIB_USE_DNS_RESOLVER CFG80211 CFG80211_CRDA_SUPPORT CFG80211_DEBUGFS CFG80211_DEFAULT_PS CFG80211_REQUIRE_SIGNED_REGDB CFG80211_USE_KERNEL_REGDB_KEYS CFG80211_WEXT CFS_BANDWIDTH CHARGER_ISP1704 CHR_DEV_ST CIFS CIFS_ALLOW_INSECURE_LEGACY CIFS_DEBUG CIFS_DFS_UPCALL CIFS_FSCACHE CIFS_POSIX CIFS_SMB_DIRECT CIFS_SWN_UPCALL CIFS_UPCALL CIFS_XATTR CLS_U32_MARK CLS_U32_PERF CMA CMA_SIZE_SEL_MBYTES CMDLINE_PARTITION COMEDI COMEDI_8254 COMEDI_8255 COMEDI_8255_PCI COMEDI_8255_SA COMEDI_ADL_PCI9118 COMEDI_ADQ12B COMEDI_AIO_AIO12_8 COMEDI_AIO_IIRO_16 COMEDI_AMPLC_DIO200 COMEDI_AMPLC_DIO200_ISA COMEDI_AMPLC_PC236 COMEDI_AMPLC_PC236_ISA COMEDI_AMPLC_PC263_ISA COMEDI_BOND COMEDI_C6XDIGIO COMEDI_DAC02 COMEDI_DAS08 COMEDI_DAS08_ISA COMEDI_DAS16M1 COMEDI_DAS1800 COMEDI_DAS6402 COMEDI_DAS800 COMEDI_DMM32AT COMEDI_DT2801 COMEDI_DT2811 COMEDI_DT2814 COMEDI_DT2815 COMEDI_DT2817 COMEDI_DT282X COMEDI_DT9812 COMEDI_FL512 COMEDI_ISADMA COMEDI_ISA_DRIVERS COMEDI_KCOMEDILIB COMEDI_MISC_DRIVERS COMEDI_MPC624 COMEDI_MULTIQ3 COMEDI_NI_ATMIO16D COMEDI_NI_AT_A2150 COMEDI_NI_AT_AO COMEDI_NI_DAQ_700_CS COMEDI_NI_LABPC COMEDI_NI_LABPC_CS COMEDI_NI_LABPC_ISA COMEDI_NI_LABPC_ISADMA COMEDI_NI_LABPC_PCI COMEDI_NI_USB6501 COMEDI_PARPORT COMEDI_PCI_DRIVERS COMEDI_PCL711 COMEDI_PCL724 COMEDI_PCL726 COMEDI_PCL730 COMEDI_PCL812 COMEDI_PCL816 COMEDI_PCL818 COMEDI_PCM3724 COMEDI_PCMAD COMEDI_PCMCIA_DRIVERS COMEDI_PCMDA12 COMEDI_PCMMIO COMEDI_PCMUIO COMEDI_RTI800 COMEDI_RTI802 COMEDI_S526 COMEDI_TEST COMEDI_USBDUX COMEDI_USBDUXFAST COMEDI_USBDUXSIGMA COMEDI_USB_DRIVERS COMEDI_VMK80XX COMPAT_NETLINK_MESSAGES COUNTER CRAMFS CRAMFS_BLOCKDEV CRAMFS_MTD CRC4 CRC64 CRC64_ROCKSOFT CRC7 CRC8 CRC_ITU_T CRC_T10DIF CRYPTO_ADIANTUM CRYPTO_AEGIS128 CRYPTO_AEGIS128_AESNI_SSE2 CRYPTO_AES_NI_INTEL CRYPTO_AES_TI CRYPTO_ANSI_CPRNG CRYPTO_ANUBIS CRYPTO_ARC4 CRYPTO_ARCH_HAVE_LIB_BLAKE2S CRYPTO_ARCH_HAVE_LIB_CHACHA CRYPTO_ARCH_HAVE_LIB_CURVE25519 CRYPTO_ARCH_HAVE_LIB_POLY1305 CRYPTO_ARIA CRYPTO_ARIA_AESNI_AVX_X86_64 CRYPTO_BLAKE2B CRYPTO_BLAKE2S_X86 CRYPTO_BLOWFISH CRYPTO_BLOWFISH_COMMON CRYPTO_BLOWFISH_X86_64 CRYPTO_CAMELLIA CRYPTO_CAMELLIA_AESNI_AVX2_X86_64 CRYPTO_CAMELLIA_AESNI_AVX_X86_64 CRYPTO_CAMELLIA_X86_64 CRYPTO_CAST5 CRYPTO_CAST5_AVX_X86_64 CRYPTO_CAST6 CRYPTO_CAST6_AVX_X86_64 CRYPTO_CAST_COMMON CRYPTO_CHACHA20 CRYPTO_CHACHA20POLY1305 CRYPTO_CHACHA20_X86_64 CRYPTO_CRC32 CRYPTO_CRC32C_INTEL CRYPTO_CRC32_PCLMUL CRYPTO_CRC64_ROCKSOFT CRYPTO_CRCT10DIF CRYPTO_CRCT10DIF_PCLMUL CRYPTO_CRYPTD CRYPTO_CTS CRYPTO_CURVE25519 CRYPTO_CURVE25519_X86 CRYPTO_DEFLATE CRYPTO_DES CRYPTO_DES3_EDE_X86_64 CRYPTO_DEV_CCP CRYPTO_DEV_CCP_DD CRYPTO_DEV_PADLOCK CRYPTO_DEV_PADLOCK_AES CRYPTO_DEV_PADLOCK_SHA CRYPTO_DEV_QAT CRYPTO_DEV_QAT_C3XXX CRYPTO_DEV_QAT_C3XXXVF CRYPTO_DEV_QAT_C62X CRYPTO_DEV_QAT_C62XVF CRYPTO_DEV_QAT_DH895xCC CRYPTO_DEV_QAT_DH895xCCVF CRYPTO_DEV_VIRTIO CRYPTO_DH CRYPTO_DRBG_CTR CRYPTO_DRBG_HASH CRYPTO_ECB CRYPTO_ECC CRYPTO_ECDH CRYPTO_ECRDSA CRYPTO_ENGINE CRYPTO_ESSIV CRYPTO_FCRYPT CRYPTO_GHASH_CLMUL_NI_INTEL CRYPTO_HCTR2 CRYPTO_KDF800108_CTR CRYPTO_KEYWRAP CRYPTO_KHAZAD CRYPTO_KPP CRYPTO_LIB_ARC4 CRYPTO_LIB_CHACHA CRYPTO_LIB_CHACHA20POLY1305 CRYPTO_LIB_CHACHA_GENERIC CRYPTO_LIB_CURVE25519 CRYPTO_LIB_CURVE25519_GENERIC CRYPTO_LIB_DES CRYPTO_LIB_POLY1305 CRYPTO_LIB_POLY1305_GENERIC CRYPTO_LRW CRYPTO_MICHAEL_MIC CRYPTO_NHPOLY1305 CRYPTO_NHPOLY1305_AVX2 CRYPTO_NHPOLY1305_SSE2 CRYPTO_PCBC CRYPTO_PCRYPT CRYPTO_POLY1305 CRYPTO_POLY1305_X86_64 CRYPTO_POLYVAL CRYPTO_POLYVAL_CLMUL_NI CRYPTO_RMD160 CRYPTO_SEED CRYPTO_SERPENT CRYPTO_SERPENT_AVX2_X86_64 CRYPTO_SERPENT_AVX_X86_64 CRYPTO_SERPENT_SSE2_X86_64 CRYPTO_SHA1_SSSE3 CRYPTO_SHA256_SSSE3 CRYPTO_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 DMA_CMA FSCACHE FUSE_FS GPIOLIB HAMRADIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_RTRS_CLIENT IOSCHED_BFQ ISDN ISDN_CAPI LIBNVDIMM MAC80211 MAC80211_LEDS MEDIA_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MTD NET_CLS_U32 NET_SCH_DEFAULT PARTITION_ADVANCED PCCARD PCMCIA RFKILL SERIAL_DEV_BUS TLS TLS_DEVICE TRANSPARENT_HUGEPAGE USB_GADGET USB_PHY VLAN_8021Q WANT_COMPAT_NETLINK_MESSAGES WEXT_CORE WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ATH ZONE_DEVICE] disabling configs for [atomic_sleep hang memleak ubsan bug_or_warning kasan locking], they are not needed determining the merge base between dbcb8d8e4163e46066f43e2bd9a6779e594ec900 and 30d4efb2f5a515a60fe6b0ca85362cbebea21e2f ffc253263a1375a65fa6c9f62a893e9767fbebfa/Linux 6.6 is a merge base, check if it has the bug testing commit ffc253263a1375a65fa6c9f62a893e9767fbebfa gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 19a11569fa5ccc0eea47cc9f1882c3b41bec0f47bd35bbeb25bbd61fd5d00bef all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in write_all_supers representative crash: BUG: unable to handle kernel NULL pointer dereference in write_all_supers, types: [NULL-POINTER-DEREFERENCE] testing current HEAD 30d4efb2f5a515a60fe6b0ca85362cbebea21e2f testing commit 30d4efb2f5a515a60fe6b0ca85362cbebea21e2f gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: e3f117bc9bed82c389d458b7db4f6bd5d7365679d41948d8ab9a01db93ea033a all runs: OK false negative chance: 0.000 # git bisect start 30d4efb2f5a515a60fe6b0ca85362cbebea21e2f ffc253263a1375a65fa6c9f62a893e9767fbebfa Bisecting: 83772 revisions left to test after this (roughly 16 steps) [194fcd20ebccbc34bba80d7d9b203920087bb01d] Merge tag 'linux_kselftest-kunit-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest determine whether the revision contains the guilty commit revision ffc253263a1375a65fa6c9f62a893e9767fbebfa crashed and is reachable testing commit 194fcd20ebccbc34bba80d7d9b203920087bb01d gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: be25e8a30b3718168df462f118821dc6dfbbeb66abf7587978908b706cfaa5a8 all runs: OK false negative chance: 0.000 # git bisect bad 194fcd20ebccbc34bba80d7d9b203920087bb01d Bisecting: 41394 revisions left to test after this (roughly 15 steps) [480e035fc4c714fb5536e64ab9db04fedc89e910] Merge tag 'drm-next-2024-03-13' of https://gitlab.freedesktop.org/drm/kernel determine whether the revision contains the guilty commit revision ffc253263a1375a65fa6c9f62a893e9767fbebfa crashed and is reachable testing commit 480e035fc4c714fb5536e64ab9db04fedc89e910 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 998d14e5af07584096b07540029fba4a3cd427150bbcaa0b97b8d20f6d6798fc all runs: OK false negative chance: 0.000 # git bisect bad 480e035fc4c714fb5536e64ab9db04fedc89e910 Bisecting: 21049 revisions left to test after this (roughly 14 steps) [78273df7f646f8daf2604ec714bea0897cd03aae] Merge tag 'header_cleanup-2024-01-10' of https://evilpiepirate.org/git/bcachefs determine whether the revision contains the guilty commit revision ffc253263a1375a65fa6c9f62a893e9767fbebfa crashed and is reachable testing commit 78273df7f646f8daf2604ec714bea0897cd03aae gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 6fe783feef9f2974cd5804394cf7cf7758a4e0a4ba86ee61ceb5d1ec44d58619 all runs: OK false negative chance: 0.000 # git bisect bad 78273df7f646f8daf2604ec714bea0897cd03aae Bisecting: 10543 revisions left to test after this (roughly 13 steps) [27beb3ca347fa29fef5c23b351120239b8cf0612] Merge tag 'pci-v6.7-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci determine whether the revision contains the guilty commit revision ffc253263a1375a65fa6c9f62a893e9767fbebfa crashed and is reachable testing commit 27beb3ca347fa29fef5c23b351120239b8cf0612 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 87b44a691514767d6a4c804d359edfed85c0c92bc0ae91110b005160ec2346a7 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in write_all_supers representative crash: BUG: unable to handle kernel NULL pointer dereference in write_all_supers, types: [NULL-POINTER-DEREFERENCE] # git bisect good 27beb3ca347fa29fef5c23b351120239b8cf0612 Bisecting: 5287 revisions left to test after this (roughly 12 steps) [a7fb0423c201ba12815877a0b5a68a6a1710b23a] cgroup: Move rcu_head up near the top of cgroup_root determine whether the revision contains the guilty commit revision 27beb3ca347fa29fef5c23b351120239b8cf0612 crashed and is reachable testing commit a7fb0423c201ba12815877a0b5a68a6a1710b23a gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: eeb4d1007ebdf212cfdd9a8661384d026a131bd57c42546fb8a0be386b7791ee all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in write_all_supers representative crash: BUG: unable to handle kernel NULL pointer dereference in write_all_supers, types: [NULL-POINTER-DEREFERENCE] # git bisect good a7fb0423c201ba12815877a0b5a68a6a1710b23a Bisecting: 2643 revisions left to test after this (roughly 11 steps) [52b1853b080a082ec3749c3a9577f6c71b1d4a90] Merge tag 'i2c-for-6.7-final' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux determine whether the revision contains the guilty commit revision ffc253263a1375a65fa6c9f62a893e9767fbebfa crashed and is reachable testing commit 52b1853b080a082ec3749c3a9577f6c71b1d4a90 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 158fc514582026a98f6a1eeb8bb3c76e17dce5abe3b9fb66f15209c9d14a98eb all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in write_all_supers representative crash: BUG: unable to handle kernel NULL pointer dereference in write_all_supers, types: [NULL-POINTER-DEREFERENCE] # git bisect good 52b1853b080a082ec3749c3a9577f6c71b1d4a90 Bisecting: 1336 revisions left to test after this (roughly 10 steps) [301940020a92ebdef9352a0573075a1db42d17aa] Merge tag 'spi-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi determine whether the revision contains the guilty commit revision 27beb3ca347fa29fef5c23b351120239b8cf0612 crashed and is reachable testing commit 301940020a92ebdef9352a0573075a1db42d17aa gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 331a992d4330a2a3411c4d39444bd5c0bfabe45b48fd965fa7b975f17d2481af all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in write_all_supers representative crash: BUG: unable to handle kernel NULL pointer dereference in write_all_supers, types: [NULL-POINTER-DEREFERENCE] # git bisect good 301940020a92ebdef9352a0573075a1db42d17aa Bisecting: 674 revisions left to test after this (roughly 9 steps) [032500abc5dc7add035ad5bc8eddf67e97f686b6] Merge tag 'jfs-6.8' of github.com:kleikamp/linux-shaggy determine whether the revision contains the guilty commit revision ffc253263a1375a65fa6c9f62a893e9767fbebfa crashed and is reachable testing commit 032500abc5dc7add035ad5bc8eddf67e97f686b6 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 4b1e42572c72be8892bb2b0c85eaae7b107f694a7f9a2a4d4e04201695708c1e all runs: OK false negative chance: 0.000 # git bisect bad 032500abc5dc7add035ad5bc8eddf67e97f686b6 Bisecting: 333 revisions left to test after this (roughly 8 steps) [7c6a3fc925b63d5201f1c11b93193d8a466a7d89] Merge tag 'for-linus-6.8-1' of https://github.com/cminyard/linux-ipmi determine whether the revision contains the guilty commit revision 301940020a92ebdef9352a0573075a1db42d17aa crashed and is reachable testing commit 7c6a3fc925b63d5201f1c11b93193d8a466a7d89 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 0c124a4172f2e7f580dd8d5591179eb23d9c85384b25b30555d196372cfcf310 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in write_all_supers representative crash: BUG: unable to handle kernel NULL pointer dereference in write_all_supers, types: [NULL-POINTER-DEREFERENCE] # git bisect good 7c6a3fc925b63d5201f1c11b93193d8a466a7d89 Bisecting: 197 revisions left to test after this (roughly 7 steps) [bcdfae6ee520b665385020fa3e47633a8af84f12] xfs: use the op name in trace_xlog_intent_recovery_failed determine whether the revision contains the guilty commit revision ffc253263a1375a65fa6c9f62a893e9767fbebfa crashed and is reachable testing commit bcdfae6ee520b665385020fa3e47633a8af84f12 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: afede3724faef6f6e1fcc2339c2303924c9379f3761cda213ddd202b1682f686 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in write_all_supers representative crash: BUG: unable to handle kernel NULL pointer dereference in write_all_supers, types: [NULL-POINTER-DEREFERENCE] # git bisect good bcdfae6ee520b665385020fa3e47633a8af84f12 Bisecting: 108 revisions left to test after this (roughly 7 steps) [e94dfb7a2935cb91faca88bf7136177d1ce0dda8] btrfs: pass btrfs_io_geometry into btrfs_max_io_len determine whether the revision contains the guilty commit revision ffc253263a1375a65fa6c9f62a893e9767fbebfa crashed and is reachable testing commit e94dfb7a2935cb91faca88bf7136177d1ce0dda8 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 1e8249857eb8b288d69896664387ab5f16046e3faf50c7e3e80a0ea56a6a3ef1 all runs: OK false negative chance: 0.000 # git bisect bad e94dfb7a2935cb91faca88bf7136177d1ce0dda8 Bisecting: 44 revisions left to test after this (roughly 6 steps) [f044b318675f0347ecfb88377542651ba4eb9e1f] btrfs: handle the ro->rw transition for mounting different subvolumes determine whether the revision contains the guilty commit revision ffc253263a1375a65fa6c9f62a893e9767fbebfa crashed and is reachable testing commit f044b318675f0347ecfb88377542651ba4eb9e1f gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 3657b8c074678d52768fdc40c891b1bbc35bc979a94dc6c1eb68b0993e956693 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in write_all_supers representative crash: BUG: unable to handle kernel NULL pointer dereference in write_all_supers, types: [NULL-POINTER-DEREFERENCE] # git bisect good f044b318675f0347ecfb88377542651ba4eb9e1f Bisecting: 22 revisions left to test after this (roughly 5 steps) [6140ba8a0a1460986ee98b4062df7d4876b88295] btrfs: switch btrfs_root::delayed_nodes_tree to xarray from radix-tree determine whether the revision contains the guilty commit revision ffc253263a1375a65fa6c9f62a893e9767fbebfa crashed and is reachable testing commit 6140ba8a0a1460986ee98b4062df7d4876b88295 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: aa981f66159892505815c9e390950f9f2f6e5e3cfa214f6649c45264aec99a95 all runs: OK false negative chance: 0.000 # git bisect bad 6140ba8a0a1460986ee98b4062df7d4876b88295 Bisecting: 10 revisions left to test after this (roughly 4 steps) [eca3aaec0de1e7059340f906a0741a68c1cf9e2b] btrfs: tests: do not ignore NULL extent maps for extent maps tests determine whether the revision contains the guilty commit revision f044b318675f0347ecfb88377542651ba4eb9e1f crashed and is reachable testing commit eca3aaec0de1e7059340f906a0741a68c1cf9e2b gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: e42a04fe76fbd0ffa3db21658261d9dc44d0e562ed9786542a97853db49add48 run #0: infra problem: create instance operation failed: &{Code:INTERNAL_ERROR ErrorDetails:[] Location: Message:Internal error. Please try again or contact Google Support. (Code: '4826899080897234828') ForceSendFields:[] NullFields:[]}. 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 bad eca3aaec0de1e7059340f906a0741a68c1cf9e2b Bisecting: 5 revisions left to test after this (roughly 3 steps) [9fb3b1a7fed796510a5c34f5d492840dfd0eb96c] btrfs: set clear_cache if we use usebackuproot determine whether the revision contains the guilty commit revision ffc253263a1375a65fa6c9f62a893e9767fbebfa crashed and is reachable testing commit 9fb3b1a7fed796510a5c34f5d492840dfd0eb96c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 00aaa2e6347a205a8783b8bb0da6223904d99d0385522a0e0ed8114ce3a6a222 all runs: OK false negative chance: 0.000 # git bisect bad 9fb3b1a7fed796510a5c34f5d492840dfd0eb96c Bisecting: 2 revisions left to test after this (roughly 1 step) [41d46b290ef9b5563ae5b3c46cf86e0ae1e4bf95] btrfs: move the device specific mount options to super.c determine whether the revision contains the guilty commit revision ffc253263a1375a65fa6c9f62a893e9767fbebfa crashed and is reachable testing commit 41d46b290ef9b5563ae5b3c46cf86e0ae1e4bf95 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 48432b03e117ae3cf670c6a6dde429794abf9cb539bdea966e83e6583f435713 all runs: OK false negative chance: 0.000 # git bisect bad 41d46b290ef9b5563ae5b3c46cf86e0ae1e4bf95 Bisecting: 0 revisions left to test after this (roughly 0 steps) [ad21f15b0f795daf8723dddbcb61797d4f1c2aed] btrfs: switch to the new mount API determine whether the revision contains the guilty commit revision ffc253263a1375a65fa6c9f62a893e9767fbebfa crashed and is reachable testing commit ad21f15b0f795daf8723dddbcb61797d4f1c2aed gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: cbf9ee9bebf04be7c6bffbbbf21f9ecb46cd0ddfdf283227f34498998b3d95e8 all runs: OK false negative chance: 0.000 # git bisect bad ad21f15b0f795daf8723dddbcb61797d4f1c2aed ad21f15b0f795daf8723dddbcb61797d4f1c2aed is the first bad commit commit ad21f15b0f795daf8723dddbcb61797d4f1c2aed Author: Josef Bacik Date: Wed Nov 22 12:17:50 2023 -0500 btrfs: switch to the new mount API Now that we have all of the parts in place to use the new mount API, switch our fs_type to use the new callbacks. There are a few things that have to be done at the same time because of the order of operations changes that come along with the new mount API. These must be done in the same patch otherwise things will go wrong. 1. Export and use btrfs_check_options in open_ctree(). This is because the options are done ahead of time, and we need to check them once we have the feature flags loaded. 2. Update the free space cache settings. Since we're coming in with the options already set we need to make sure we don't undo what the user has asked for. 3. Set our sb_flags at init_fs_context time, the fs_context stuff is trying to manage the sb_flagss itself, so move that into init_fs_context and out of the fill super part. Additionally I've marked the unused functions with __maybe_unused and will remove them in a future patch. Reviewed-by: Johannes Thumshirn Acked-by: Christian Brauner Signed-off-by: Josef Bacik Reviewed-by: David Sterba Signed-off-by: David Sterba fs/btrfs/disk-io.c | 11 +++++-- fs/btrfs/super.c | 88 ++++++++++++++++++++++++++++++------------------------ fs/btrfs/super.h | 2 ++ 3 files changed, 60 insertions(+), 41 deletions(-) accumulated error probability: 0.00 culprit signature: cbf9ee9bebf04be7c6bffbbbf21f9ecb46cd0ddfdf283227f34498998b3d95e8 parent signature: 3657b8c074678d52768fdc40c891b1bbc35bc979a94dc6c1eb68b0993e956693 revisions tested: 26, total time: 4h28m41.603083901s (build: 1h44m32.823998451s, test: 2h32m17.778867457s) first good commit: ad21f15b0f795daf8723dddbcb61797d4f1c2aed btrfs: switch to the new mount API recipients (to): ["brauner@kernel.org" "dsterba@suse.com" "johannes.thumshirn@wdc.com" "josef@toxicpanda.com"] recipients (cc): []