ci2 starts bisection 2026-08-01 20:45:40.634974598 +0000 UTC m=+66134.605987758 bisecting fixing commit since f5459048c38a00fc583658d6dcd0f894aff6df8f building syzkaller on 38c8e24669882aabb2ec15315fbe22eb28592b44 ensuring issue is reproducible on original commit f5459048c38a00fc583658d6dcd0f894aff6df8f testing commit f5459048c38a00fc583658d6dcd0f894aff6df8f gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 24ede5b5624343f62e6392626ccce5147172788c737b352f8a175b8f7cdbdf25 all runs: crashed: WARNING in __btrfs_free_extent representative crash: WARNING in __btrfs_free_extent, types: [WARNING] check whether we can drop unnecessary instrumentation disabling configs for [ubsan kasan locking atomic_sleep hang memleak], they are not needed testing commit f5459048c38a00fc583658d6dcd0f894aff6df8f gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 673f3df9c38088739654f3fa7b1b1e244b5b36bc37b0fe681c039fb8df27f932 all runs: crashed: WARNING in __btrfs_free_extent representative crash: WARNING in __btrfs_free_extent, types: [WARNING] the bug reproduces without the instrumentation disabling configs for [locking atomic_sleep hang memleak ubsan kasan], they are not needed kconfig minimization: base=4140 full=8410 leaves diff=2135 split chunks (needed=false): <2135> split chunk #0 of len 2135 into 5 parts testing without sub-chunk 1/5 disabling configs for [memleak ubsan kasan locking atomic_sleep hang], they are not needed testing commit f5459048c38a00fc583658d6dcd0f894aff6df8f gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 271f573ff3e37e76f0e400a8fe9ab450315b569f36316f8307ae29c94025d42d all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 disabling configs for [ubsan kasan locking atomic_sleep hang memleak], they are not needed testing commit f5459048c38a00fc583658d6dcd0f894aff6df8f gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 7c7577d529e6e455bb73d486cdb7872e3888f33b5bb29ecd100070a81bec5b96 all runs: crashed: WARNING in __btrfs_free_extent representative crash: WARNING in __btrfs_free_extent, types: [WARNING] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [ubsan kasan locking atomic_sleep hang memleak], they are not needed testing commit f5459048c38a00fc583658d6dcd0f894aff6df8f gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 16bb032e6c9a0b3ae2174c94f0626881b4cc7720cab4803a90fe11328de18d4e all runs: crashed: WARNING in __btrfs_free_extent representative crash: WARNING in __btrfs_free_extent, types: [WARNING] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit f5459048c38a00fc583658d6dcd0f894aff6df8f gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: e79569ac879a1b4c2486e0483f2408eea2d4c0971c6aa2414ff749f4d18b7277 all runs: crashed: WARNING in __btrfs_free_extent representative crash: WARNING in __btrfs_free_extent, types: [WARNING] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing commit f5459048c38a00fc583658d6dcd0f894aff6df8f gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 9122558c27978aed0e47167d70f8c4e96a272df51e53fa7604c3c7a4a1bf1c61 all runs: crashed: WARNING in __btrfs_free_extent representative crash: WARNING in __btrfs_free_extent, types: [WARNING] the chunk can be dropped minimized to 427 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 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_HAS_USER_SHADOW_STACK 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 AX25 AX25_DAMA_SLAVE AX88796B_PHY BALLOON BALLOON_MIGRATION BAREUDP BATMAN_ADV BATMAN_ADV_BATMAN_V BATMAN_ADV_BLA BATMAN_ADV_DAT BATMAN_ADV_MCAST 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_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_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_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_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 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_BROKEN_COUNTED_BY_REF 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 CLOSURES CLS_U32_MARK CLS_U32_PERF CMA CMA_SIZE_SEL_MAX 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 CRC64 CRC64_ARCH CRC8 CRC_ITU_T CRC_T10DIF CRC_T10DIF_ARCH CRYPTO_842 CRYPTO_ADIANTUM CRYPTO_AEGIS128 CRYPTO_AEGIS128_AESNI_SSE2 CRYPTO_AES_NI_INTEL CRYPTO_ANUBIS CRYPTO_ARC4 CRYPTO_ARIA CRYPTO_ARIA_AESNI_AVX_X86_64 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_CMAC CRYPTO_CRYPTD CRYPTO_CTS 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_DF80090A CRYPTO_DH CRYPTO_DRBG CRYPTO_DRBG_CTR CRYPTO_DRBG_HASH CRYPTO_DRBG_HMAC CRYPTO_DRBG_MENU CRYPTO_ECC CRYPTO_ECDH CRYPTO_ECRDSA CRYPTO_ENGINE CRYPTO_ESSIV CRYPTO_FCRYPT CRYPTO_GHASH CRYPTO_GHASH_CLMUL_NI_INTEL CRYPTO_HCTR2 CRYPTO_JITTERENTROPY CRYPTO_KDF800108_CTR CRYPTO_KHAZAD CRYPTO_KPP CRYPTO_KPP2 CRYPTO_KRB5 CRYPTO_KRB5ENC CRYPTO_LIB_ARC4 CRYPTO_LIB_BLAKE2B CRYPTO_LIB_CHACHA CRYPTO_LIB_CHACHA20POLY1305 CRYPTO_LIB_CHACHA_ARCH CRYPTO_LIB_CURVE25519 CRYPTO_LIB_CURVE25519_ARCH CRYPTO_LIB_CURVE25519_GENERIC CRYPTO_LIB_DES CRYPTO_LIB_GF128MUL CRYPTO_LIB_NH CRYPTO_LIB_NH_ARCH CRYPTO_LIB_POLY1305 CRYPTO_LIB_POLY1305_ARCH CRYPTO_LIB_POLY1305_GENERIC CRYPTO_LIB_POLYVAL CRYPTO_LIB_POLYVAL_ARCH CRYPTO_LIB_SHA512 CRYPTO_LIB_SHA512_ARCH CRYPTO_LIB_SM3 CRYPTO_LRW CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_MICHAEL_MIC CRYPTO_PCBC CRYPTO_PCRYPT CRYPTO_RMD160 CRYPTO_RNG CRYPTO_RNG2 CRYPTO_RNG_DEFAULT CRYPTO_SEED CRYPTO_SERPENT CRYPTO_SERPENT_AVX2_X86_64 CRYPTO_SERPENT_AVX_X86_64 CRYPTO_SERPENT_SSE2_X86_64 CRYPTO_SHA1 CRYPTO_SHA3 CRYPTO_SHA512 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_ZSTD CUSE CYPRESS_FIRMWARE DAMON DAMON_PADDR DAMON_RECLAIM DAMON_VADDR DAX DCA DCB DEFAULT_CODEL DEVICE_MIGRATION DEVICE_PRIVATE DEV_COREDUMP DIBS DIBS_LO DLN2_ADC DMABUF_HEAPS DMABUF_HEAPS_CMA DMABUF_HEAPS_SYSTEM DMABUF_MOVE_NOTIFY DMA_CMA DMA_ENGINE_RAID DM_AUDIT FSCACHE FUSE_FS GPIOLIB HAMRADIO IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_RTRS_CLIENT IOSCHED_BFQ ISA_BUS LIBNVDIMM MAC80211 MAC80211_DEBUGFS MAC80211_LEDS MEDIA_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MMC MODVERSIONS MTD NET_CLS_U32 NET_SCH_DEFAULT PARTITION_ADVANCED PCCARD PCMCIA RFKILL SERIAL_DEV_BUS TLS TLS_DEVICE USB_GADGET USB_PHY VLAN_8021Q WANT_COMPAT_NETLINK_MESSAGES WEXT_CORE WIRELESS WLAN WLAN_VENDOR_ATH ZONE_DEVICE] disabling configs for [locking atomic_sleep hang memleak ubsan kasan], they are not needed testing current HEAD 2d2338c93da79b3bfe4b6099a931d9468d539952 testing commit 2d2338c93da79b3bfe4b6099a931d9468d539952 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: fa4737c0aeedfaba38d346514bcad423ee39a0785cf187f03499cdb4eeb3f99c all runs: OK false negative chance: 0.000 # git bisect start 2d2338c93da79b3bfe4b6099a931d9468d539952 f5459048c38a00fc583658d6dcd0f894aff6df8f Bisecting: 17143 revisions left to test after this (roughly 14 steps) [22e2036479cb77df6281ebbd376ae6c330774790] Merge tag 'net-7.1-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net determine whether the revision contains the guilty commit revision f5459048c38a00fc583658d6dcd0f894aff6df8f crashed and is reachable testing commit 22e2036479cb77df6281ebbd376ae6c330774790 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 9723283ab33f2af4bcfe86ffdbb67fe1803483b3b72b4faba05d4a72a5ad28aa all runs: OK false negative chance: 0.000 # git bisect bad 22e2036479cb77df6281ebbd376ae6c330774790 Bisecting: 8567 revisions left to test after this (roughly 13 steps) [3cd8b194bf3428dfa53120fee47e827a7c495815] Merge tag 'v7.1-rc-part1-smbdirect-fixes' of git://git.samba.org/ksmbd determine whether the revision contains the guilty commit revision f5459048c38a00fc583658d6dcd0f894aff6df8f crashed and is reachable testing commit 3cd8b194bf3428dfa53120fee47e827a7c495815 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: bd080eb7dabfa431e75836a0c983d26d1e19dd56bf33e4a58625b95382e153b7 all runs: crashed: WARNING in __btrfs_free_extent representative crash: WARNING in __btrfs_free_extent, types: [WARNING] # git bisect good 3cd8b194bf3428dfa53120fee47e827a7c495815 Bisecting: 4282 revisions left to test after this (roughly 12 steps) [5fb4fde3b287fdd9097c53fee7126c2f74698073] Merge tag 'xtensa-20260422' of https://github.com/jcmvbkbc/linux-xtensa determine whether the revision contains the guilty commit revision 3cd8b194bf3428dfa53120fee47e827a7c495815 crashed and is reachable testing commit 5fb4fde3b287fdd9097c53fee7126c2f74698073 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 0527c8901a9f33aa5072989bb65235c764074a9a54dc6298e54ef3b7f7c5266e all runs: crashed: WARNING in __btrfs_free_extent representative crash: WARNING in __btrfs_free_extent, types: [WARNING] # git bisect good 5fb4fde3b287fdd9097c53fee7126c2f74698073 Bisecting: 2138 revisions left to test after this (roughly 11 steps) [515186b7be488f37c63c2436fc2d1a160ef9bb95] Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf determine whether the revision contains the guilty commit revision 5fb4fde3b287fdd9097c53fee7126c2f74698073 crashed and is reachable testing commit 515186b7be488f37c63c2436fc2d1a160ef9bb95 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 682021698ac6a9b814a4c1891748767139c18c0abdf9dda8610d88357259f9af all runs: crashed: WARNING in __btrfs_free_extent representative crash: WARNING in __btrfs_free_extent, types: [WARNING] # git bisect good 515186b7be488f37c63c2436fc2d1a160ef9bb95 Bisecting: 1065 revisions left to test after this (roughly 10 steps) [4a5860ea6098bc6c0a966bb415d5dfe96adb4a86] Merge tag 'drm-fixes-2026-05-23' of https://gitlab.freedesktop.org/drm/kernel determine whether the revision contains the guilty commit revision 515186b7be488f37c63c2436fc2d1a160ef9bb95 crashed and is reachable testing commit 4a5860ea6098bc6c0a966bb415d5dfe96adb4a86 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 1c1d9d509862a744e466c4063fab91ffc81f6020b2e9f872c33e251aafae25b3 all runs: crashed: WARNING in __btrfs_free_extent representative crash: WARNING in __btrfs_free_extent, types: [WARNING] # git bisect good 4a5860ea6098bc6c0a966bb415d5dfe96adb4a86 Bisecting: 525 revisions left to test after this (roughly 9 steps) [670b77dfebe7257adc0defbc48a4c43cfdf6c8f6] Merge tag 'usb-7.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb determine whether the revision contains the guilty commit revision 3cd8b194bf3428dfa53120fee47e827a7c495815 crashed and is reachable testing commit 670b77dfebe7257adc0defbc48a4c43cfdf6c8f6 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 4cf88fbd82bfce4f470281835dc35ae5d23c6e461e5bed44be93d7289bc5143a all runs: OK false negative chance: 0.000 # git bisect bad 670b77dfebe7257adc0defbc48a4c43cfdf6c8f6 Bisecting: 268 revisions left to test after this (roughly 8 steps) [e6f4f084ecd876a333c4cf13d0229217dbfcd8e8] Merge tag 'hid-for-linus-2026052801' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid determine whether the revision contains the guilty commit revision 5fb4fde3b287fdd9097c53fee7126c2f74698073 crashed and is reachable testing commit e6f4f084ecd876a333c4cf13d0229217dbfcd8e8 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 34f4573b9ea68b65deffc908a249823c0925c4c2acc7b74139a76a284d20def8 all runs: OK false negative chance: 0.000 # git bisect bad e6f4f084ecd876a333c4cf13d0229217dbfcd8e8 Bisecting: 134 revisions left to test after this (roughly 7 steps) [e909cedf6800ef493063f18a089f3632817a8c2d] Merge tag 'linux_kselftest-kunit-fixes-7.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest determine whether the revision contains the guilty commit revision 3cd8b194bf3428dfa53120fee47e827a7c495815 crashed and is reachable testing commit e909cedf6800ef493063f18a089f3632817a8c2d gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 0b481e5eb87d6b26e04a38197a843b11ab801b1415cc26ab22a91d7ccbac70e9 all runs: OK false negative chance: 0.000 # git bisect bad e909cedf6800ef493063f18a089f3632817a8c2d Bisecting: 71 revisions left to test after this (roughly 6 steps) [53676e4d44d6b38c8a0d9bff331f170ae2e41bbe] drm/msm: Restore second parameter name in purge() and evict() determine whether the revision contains the guilty commit revision 3cd8b194bf3428dfa53120fee47e827a7c495815 crashed and is reachable testing commit 53676e4d44d6b38c8a0d9bff331f170ae2e41bbe gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 6028a5f65d303e9f71679cadc9793eab170a2207a69b3f00a8ab39fe1737654e all runs: OK false negative chance: 0.000 # git bisect bad 53676e4d44d6b38c8a0d9bff331f170ae2e41bbe Bisecting: 29 revisions left to test after this (roughly 5 steps) [95e6d3ba0571330df866911da9dedd83e05417ca] Merge tag 'loongarch-fixes-7.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson determine whether the revision contains the guilty commit revision f5459048c38a00fc583658d6dcd0f894aff6df8f crashed and is reachable testing commit 95e6d3ba0571330df866911da9dedd83e05417ca gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: c292455c6511f4200f848e97f9194f3eb24ab26abcf287b647b8dfbeff22b33d all runs: crashed: WARNING in __btrfs_free_extent representative crash: WARNING in __btrfs_free_extent, types: [WARNING] # git bisect good 95e6d3ba0571330df866911da9dedd83e05417ca Bisecting: 16 revisions left to test after this (roughly 4 steps) [400544639d2a11a9c1e276a912a9dff8fe4107dc] Merge tag 'for-7.1-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux determine whether the revision contains the guilty commit revision 3cd8b194bf3428dfa53120fee47e827a7c495815 crashed and is reachable testing commit 400544639d2a11a9c1e276a912a9dff8fe4107dc gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: a4328249de1f0b6148baef65b2ca9ed3371b5f97de2a1df057ac8847aad7ecde all runs: OK false negative chance: 0.000 # git bisect bad 400544639d2a11a9c1e276a912a9dff8fe4107dc Bisecting: 6 revisions left to test after this (roughly 3 steps) [f83ef5bca211a1bdc1ea661c11543712f96a6cea] Merge tag 'xfs-fixes-7.1-rc5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux determine whether the revision contains the guilty commit revision f5459048c38a00fc583658d6dcd0f894aff6df8f crashed and is reachable testing commit f83ef5bca211a1bdc1ea661c11543712f96a6cea gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: c34f0fe7098e0bc13c64d884ae51f532b20535902d3cf885d191e7c907ac3b2d all runs: crashed: WARNING in __btrfs_free_extent representative crash: WARNING in __btrfs_free_extent, types: [WARNING] # git bisect good f83ef5bca211a1bdc1ea661c11543712f96a6cea Bisecting: 3 revisions left to test after this (roughly 2 steps) [1e92637722ae4bd417f7a37e8d1485dc23b93935] btrfs: check for subvolume before deleting squota qgroup determine whether the revision contains the guilty commit checking the merge base 591cd656a1bf5ea94a222af5ef2ee76df029c1d2 no existing result, test the revision testing commit 591cd656a1bf5ea94a222af5ef2ee76df029c1d2 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: 860682a0b111ac6e2515eb1325407b57f768be93ff1cd86b6fdc1ce7e509c604 all runs: crashed: WARNING in __btrfs_free_extent representative crash: WARNING in __btrfs_free_extent, types: [WARNING] testing commit 1e92637722ae4bd417f7a37e8d1485dc23b93935 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: e3689b82f4e47ea1e7935e266cb6be085ef148ba3f7d4dca420e563d16e2513e all runs: OK false negative chance: 0.000 # git bisect bad 1e92637722ae4bd417f7a37e8d1485dc23b93935 Bisecting: 0 revisions left to test after this (roughly 1 step) [975e63c7a8074d83e195577b7f76dadc9a3d14b7] btrfs: always drop root->inodes lock before cond_resched() determine whether the revision contains the guilty commit revision 591cd656a1bf5ea94a222af5ef2ee76df029c1d2 crashed and is reachable testing commit 975e63c7a8074d83e195577b7f76dadc9a3d14b7 gcc compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 kernel signature: f604377e4d1f0e0db0c82ca6ffa460bfc0ae9ebd6126a3141e5d94349a7fc81a all runs: crashed: WARNING in __btrfs_free_extent representative crash: WARNING in __btrfs_free_extent, types: [WARNING] # git bisect good 975e63c7a8074d83e195577b7f76dadc9a3d14b7 1e92637722ae4bd417f7a37e8d1485dc23b93935 is the first bad commit commit 1e92637722ae4bd417f7a37e8d1485dc23b93935 Author: Boris Burkov Date: Mon May 11 13:07:11 2026 -0700 btrfs: check for subvolume before deleting squota qgroup The invariant that we want to maintain with subvolume qgroups is that the qgroup can only be deleted if there is no root. With squotas, we thought that it was sufficient to just check the usage, because we assumed that deleting a subvolume will drive it's qgroups usage to 0, and thus 0 usage implies no subvolume. However, this is false, for two reasons: - A subvol whose extents are all from before squotas was enabled. - A subvol that was created in this transaction and for which we have not yet run any delayed refs. In both cases, deleting the qgroup breaks the desired invariant and we are left with a subvolume with no qgroup but squotas are enabled. Fix this by unifying the deletion check logic between full qgroups and squotas. Squotas do all the same checks *and* the additional usage == 0 check, which is the one extra rule peculiar to squotas. Link: https://lore.kernel.org/linux-btrfs/adnBhWfJQ1n3hZC8@merlins.org/ Fixes: a8df35619948 ("btrfs: forbid deleting live subvol qgroup") Reviewed-by: Qu Wenruo Signed-off-by: Boris Burkov Reviewed-by: David Sterba Signed-off-by: David Sterba fs/btrfs/qgroup.c | 50 +++++++++++++++++++++++++------------------------- 1 file changed, 25 insertions(+), 25 deletions(-) accumulated error probability: 0.00 culprit signature: e3689b82f4e47ea1e7935e266cb6be085ef148ba3f7d4dca420e563d16e2513e parent signature: f604377e4d1f0e0db0c82ca6ffa460bfc0ae9ebd6126a3141e5d94349a7fc81a revisions tested: 23, total time: 7h37m30.239760819s (build: 2h56m29.470335496s, test: 3h44m5.461274279s) first good commit: 1e92637722ae4bd417f7a37e8d1485dc23b93935 btrfs: check for subvolume before deleting squota qgroup recipients (to): ["boris@bur.io" "dsterba@suse.com" "wqu@suse.com"] recipients (cc): []