ci2 starts bisection 2025-06-07 15:50:34.516289331 +0000 UTC m=+49670.430994197 bisecting cause commit starting from 7a13c14ee59d4f6c5f4277a86516cbc73a1383a8 building syzkaller on ce7952f4e369f2440b2bc369868df305c42bf7d6 ensuring issue is reproducible on original commit 7a13c14ee59d4f6c5f4277a86516cbc73a1383a8 testing commit 7a13c14ee59d4f6c5f4277a86516cbc73a1383a8 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 31946adc609aad9fc8966d56bf41b32558a4153ab1c042988ceb1fe3aba9368e run #0: crashed: INFO: task hung in afs_cell_purge run #1: crashed: INFO: task hung in afs_cell_purge run #2: crashed: INFO: task hung in afs_cell_purge run #3: crashed: INFO: task hung in afs_cell_purge run #4: crashed: INFO: task hung in afs_cell_purge run #5: crashed: INFO: task hung in afs_cell_purge run #6: crashed: INFO: task hung in afs_cell_purge run #7: crashed: INFO: task hung in afs_cell_purge run #8: crashed: INFO: task hung in afs_cell_purge run #9: OK run #10: crashed: INFO: task hung in afs_cell_purge run #11: OK run #12: crashed: INFO: task hung in afs_cell_purge run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: crashed: INFO: task hung in afs_cell_purge representative crash: INFO: task hung in afs_cell_purge, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 7a13c14ee59d4f6c5f4277a86516cbc73a1383a8 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 68d77559ae7f0d36a1e98e823f10f6294b46e45dba5ed311e43937dd8b8c749c all runs: crashed: INFO: task hung in afs_cell_purge representative crash: INFO: task hung in afs_cell_purge, types: [HANG] the bug reproduces without the instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=4084 full=8322 leaves diff=2129 split chunks (needed=false): <2129> split chunk #0 of len 2129 into 5 parts testing without sub-chunk 1/5 disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 7a13c14ee59d4f6c5f4277a86516cbc73a1383a8 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 769d1c671831be21d8af19e01e525b1a4ce9cf68faea28d06cafa1db810c0074 all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed testing commit 7a13c14ee59d4f6c5f4277a86516cbc73a1383a8 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: a22823cf7986baf97f59f606a5ab458e83204856ea0a09c4a699afd7cae7b508 run #0: crashed: INFO: task hung in afs_cell_purge run #1: crashed: INFO: task hung in afs_cell_purge run #2: crashed: INFO: task hung in afs_cell_purge run #3: crashed: INFO: task hung in afs_cell_purge run #4: crashed: INFO: task hung in afs_cell_purge run #5: crashed: INFO: task hung in afs_cell_purge run #6: crashed: INFO: task hung in afs_cell_purge run #7: crashed: INFO: task hung in afs_cell_purge run #8: OK run #9: OK representative crash: INFO: task hung in afs_cell_purge, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed testing commit 7a13c14ee59d4f6c5f4277a86516cbc73a1383a8 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 6fe7ae0034a4e76bfe9ea91faf98f3711722315233b208e05fe62bb68868a1c2 run #0: crashed: INFO: task hung in afs_cell_purge run #1: crashed: INFO: task hung in afs_cell_purge run #2: crashed: INFO: task hung in afs_cell_purge run #3: crashed: INFO: task hung in afs_cell_purge run #4: crashed: INFO: task hung in afs_cell_purge run #5: crashed: INFO: task hung in afs_cell_purge run #6: OK run #7: OK run #8: OK run #9: OK representative crash: INFO: task hung in afs_cell_purge, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed testing commit 7a13c14ee59d4f6c5f4277a86516cbc73a1383a8 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: cca206ba00ac937668f01a9fa48e842a1ac8d9d75efecb3303cc949876019a88 run #0: crashed: INFO: task hung in afs_cell_purge run #1: crashed: INFO: task hung in afs_cell_purge run #2: crashed: INFO: task hung in afs_cell_purge run #3: crashed: INFO: task hung in afs_cell_purge run #4: crashed: INFO: task hung in afs_cell_purge run #5: crashed: INFO: task hung in afs_cell_purge run #6: crashed: INFO: task hung in afs_cell_purge run #7: crashed: INFO: task hung in afs_cell_purge run #8: OK run #9: OK representative crash: INFO: task hung in afs_cell_purge, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 7a13c14ee59d4f6c5f4277a86516cbc73a1383a8 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: c1dae87b2d7ba10781fed1b74ce3f59d6f77cf2fce9100c3b19e64fd9050aaf4 run #0: crashed: INFO: task hung in afs_cell_purge run #1: crashed: INFO: task hung in afs_cell_purge run #2: crashed: INFO: task hung in afs_cell_purge run #3: crashed: INFO: task hung in afs_cell_purge run #4: crashed: INFO: task hung in afs_cell_purge run #5: OK run #6: OK run #7: OK run #8: crashed: INFO: task hung in afs_cell_purge run #9: OK representative crash: INFO: task hung in afs_cell_purge, types: [HANG] the chunk can be dropped minimized to 426 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 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 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_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_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_HKDF CRYPTO_KDF800108_CTR CRYPTO_KHAZAD CRYPTO_KPP CRYPTO_KRB5 CRYPTO_KRB5ENC CRYPTO_LIB_ARC4 CRYPTO_LIB_CHACHA CRYPTO_LIB_CHACHA20POLY1305 CRYPTO_LIB_CHACHA_GENERIC CRYPTO_LIB_CHACHA_INTERNAL CRYPTO_LIB_CURVE25519 CRYPTO_LIB_CURVE25519_GENERIC CRYPTO_LIB_CURVE25519_INTERNAL CRYPTO_LIB_DES CRYPTO_LIB_POLY1305 CRYPTO_LIB_POLY1305_GENERIC CRYPTO_LIB_POLY1305_INTERNAL 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 DEBUG_VFS 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_FBDEV_EMULATION 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 ZONE_DEVICE] disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed picked [v6.14 v6.13 v6.12 v6.10 v6.8 v6.6 v6.4 v6.2 v5.19 v5.16 v5.13 v5.10 v5.7 v5.4 v5.1 v4.19] out of 37 release tags testing release v6.14 testing commit 38fec10eb60d687e30c8c6b5420d86e8149f7557 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 3ab21e980678ea354abf501c5cf4c72d358cb0e6a959ede593cf260379bf95e8 all runs: OK false negative chance: 0.000 # git bisect start 7a13c14ee59d4f6c5f4277a86516cbc73a1383a8 38fec10eb60d687e30c8c6b5420d86e8149f7557 Bisecting: 7375 revisions left to test after this (roughly 13 steps) [7b667acd69e316c2ed1b47e5dcd9d093be4a843f] Merge tag 'powerpc-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux testing commit 7b667acd69e316c2ed1b47e5dcd9d093be4a843f gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: dc8f9f9a860e6a80de040d82abe45b75cf05f05f906005167e25d1a792385d66 run #0: crashed: unregister_netdevice: waiting for DEV to become free run #1: crashed: INFO: task hung in afs_cell_purge run #2: crashed: INFO: task hung in afs_cell_purge run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: INFO: task hung in afs_cell_purge, types: [HANG UNKNOWN] # git bisect bad 7b667acd69e316c2ed1b47e5dcd9d093be4a843f Bisecting: 3732 revisions left to test after this (roughly 12 steps) [91928e0d3cc29789f4483bffee5f36218f23942b] Merge tag 'for-6.15/io_uring-20250322' of git://git.kernel.dk/linux testing commit 91928e0d3cc29789f4483bffee5f36218f23942b gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 39c50d552a16ef650a2c3193e302a2b16dfec2f244304def2f68503554bb5d14 run #0: crashed: INFO: task hung in afs_cell_purge run #1: crashed: INFO: task hung in afs_cell_purge run #2: crashed: INFO: task hung in afs_cell_purge run #3: crashed: INFO: task hung in afs_cell_purge run #4: crashed: INFO: task hung in afs_cell_purge run #5: crashed: INFO: task hung in afs_cell_purge run #6: crashed: INFO: task hung in afs_cell_purge run #7: crashed: INFO: task hung in afs_cell_purge run #8: OK run #9: OK run #10: OK run #11: OK 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: INFO: task hung in afs_cell_purge, types: [HANG] # git bisect bad 91928e0d3cc29789f4483bffee5f36218f23942b Bisecting: 1895 revisions left to test after this (roughly 11 steps) [21e0ff5b10ec1b61fda435d42db4ba80d0cdfded] Merge tag 'acpi-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm testing commit 21e0ff5b10ec1b61fda435d42db4ba80d0cdfded gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 7e36b25f9c0993dc1d78cc39db69b5924d73f3e15c1cb964ac2127dcc0ba2a8f all runs: boot failed: BUG: unable to handle kernel NULL pointer dereference in msix_capability_init unable to determine the verdict: 0 good runs (wanted 15), for bad wanted 10 in total, got 0 # git bisect skip 21e0ff5b10ec1b61fda435d42db4ba80d0cdfded Bisecting: 1895 revisions left to test after this (roughly 11 steps) [b90a6e60619fcef9f1df24eb395d4e85be70ebe8] pmdomain: Merge branch fixes into next testing commit b90a6e60619fcef9f1df24eb395d4e85be70ebe8 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: d02deda8d4badd873bdc93be4ae7c347af61232e933206935d0280a725612073 all runs: OK false negative chance: 0.000 # git bisect good b90a6e60619fcef9f1df24eb395d4e85be70ebe8 Bisecting: 1865 revisions left to test after this (roughly 11 steps) [1ff07522690d2c2b67343099d2d046e88f71cddb] ASoC: Intel: soc-acpi-intel-lnl-match: add cs42l43 6x cs35l56 support testing commit 1ff07522690d2c2b67343099d2d046e88f71cddb gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: f37921faeb997abc068a04704712ed687f0113afa45f1a491cbace7cf6208def all runs: OK false negative chance: 0.000 # git bisect good 1ff07522690d2c2b67343099d2d046e88f71cddb Bisecting: 1710 revisions left to test after this (roughly 11 steps) [27bd3ce4038baad9976d287ce883df1674f3220e] Merge tag 'm68k-for-v6.15-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k testing commit 27bd3ce4038baad9976d287ce883df1674f3220e gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: a62758d21f72ac7590a2dd3a4875365f8218761a088ba2dd4f78e0853deba65b run #0: crashed: INFO: task hung in afs_cell_purge run #1: crashed: INFO: task hung in afs_cell_purge run #2: crashed: INFO: task hung in afs_cell_purge run #3: crashed: INFO: task hung in afs_cell_purge run #4: crashed: INFO: task hung in afs_cell_purge run #5: crashed: INFO: task hung in afs_cell_purge run #6: crashed: INFO: task hung in afs_cell_purge run #7: crashed: INFO: task hung in afs_cell_purge run #8: crashed: INFO: task hung in afs_cell_purge run #9: crashed: general protection fault in binderfs_evict_inode run #10: OK run #11: crashed: INFO: task hung in afs_cell_purge 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: INFO: task hung in afs_cell_purge, types: [HANG] # git bisect bad 27bd3ce4038baad9976d287ce883df1674f3220e Bisecting: 733 revisions left to test after this (roughly 10 steps) [32b22538bea83bd48f00ab1403e5a4dbce41f0d0] Merge tag 'sched-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit 32b22538bea83bd48f00ab1403e5a4dbce41f0d0 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: c0ee6243a265adb1bcd826462745b7b484087dd691d959bd9265b99d106342a9 run #0: crashed: INFO: task hung in afs_cell_purge run #1: crashed: INFO: task hung in afs_cell_purge run #2: crashed: INFO: task hung in afs_cell_purge run #3: crashed: INFO: task hung in afs_cell_purge run #4: crashed: INFO: task hung in afs_cell_purge run #5: crashed: INFO: task hung in afs_cell_purge run #6: crashed: INFO: task hung in afs_cell_purge run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK 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: INFO: task hung in afs_cell_purge, types: [HANG] # git bisect bad 32b22538bea83bd48f00ab1403e5a4dbce41f0d0 Bisecting: 376 revisions left to test after this (roughly 9 steps) [05b00ffd7a0bf31f45b63242f30b3a8a0008fa78] Merge tag 'slab-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab testing commit 05b00ffd7a0bf31f45b63242f30b3a8a0008fa78 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 21085d2bd31fc75ed15ee4a06c82fdab41f02cf1a87b9b8bb12a76d493d96187 run #0: crashed: INFO: task hung in afs_cell_purge run #1: crashed: INFO: task hung in afs_cell_purge run #2: crashed: INFO: task hung in afs_cell_purge run #3: crashed: INFO: task hung in afs_cell_purge run #4: crashed: INFO: task hung in afs_cell_purge run #5: crashed: INFO: task hung in afs_cell_purge run #6: crashed: INFO: task hung in afs_cell_purge run #7: crashed: INFO: task hung in afs_cell_purge run #8: crashed: INFO: task hung in afs_cell_purge run #9: OK run #10: OK run #11: OK 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: INFO: task hung in afs_cell_purge, types: [HANG] # git bisect bad 05b00ffd7a0bf31f45b63242f30b3a8a0008fa78 Bisecting: 196 revisions left to test after this (roughly 8 steps) [aaca83f7b13fbe54c853f63eca9e849e6b441459] Merge tag 'vfs-6.15-rc1.sysv' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs testing commit aaca83f7b13fbe54c853f63eca9e849e6b441459 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 378edbd4704deaa9b38061f42206f295613a23396a0aef12b8fd3dd4363ce8a9 all runs: OK false negative chance: 0.000 # git bisect good aaca83f7b13fbe54c853f63eca9e849e6b441459 Bisecting: 96 revisions left to test after this (roughly 7 steps) [912b82dc0b27abc407c831e74fbcbdebfe19997b] Merge tag 'vfs-6.15-rc1.file' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs testing commit 912b82dc0b27abc407c831e74fbcbdebfe19997b gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 1da0132af706d58ca0dfd7e20b14ec5ed59fb1b4c16f43ab5e8183f4f98a7289 run #0: crashed: INFO: task hung in afs_cell_purge run #1: crashed: INFO: task hung in afs_cell_purge run #2: crashed: INFO: task hung in afs_cell_purge run #3: crashed: INFO: task hung in afs_cell_purge run #4: crashed: INFO: task hung in afs_cell_purge run #5: crashed: INFO: task hung in afs_cell_purge run #6: crashed: INFO: task hung in afs_cell_purge run #7: crashed: INFO: task hung in afs_cell_purge run #8: OK run #9: OK run #10: OK run #11: OK 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: INFO: task hung in afs_cell_purge, types: [HANG] # git bisect bad 912b82dc0b27abc407c831e74fbcbdebfe19997b Bisecting: 41 revisions left to test after this (roughly 6 steps) [e63046adefc03800f1af76476701606bb148b49c] Merge tag 'vfs-6.15-rc1.ceph' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs testing commit e63046adefc03800f1af76476701606bb148b49c gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: c87ddbf682feec0f3750b8a5bf7081ea4c2b44d151ddd804c776af0ae1bc8f71 all runs: OK false negative chance: 0.000 # git bisect good e63046adefc03800f1af76476701606bb148b49c Bisecting: 18 revisions left to test after this (roughly 4 steps) [9483c37e2d1c48e45d1416327122ff6010ec7f8d] Merge tag 'vfs-6.15-rc1.afs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs testing commit 9483c37e2d1c48e45d1416327122ff6010ec7f8d gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 6e2bbcbaa67e486d80068d78527c7414ea93bbcec184eae226d747fb8a22f68a run #0: crashed: INFO: task hung in afs_cell_purge run #1: crashed: INFO: task hung in afs_cell_purge run #2: crashed: INFO: task hung in afs_cell_purge run #3: crashed: INFO: task hung in afs_cell_purge run #4: crashed: INFO: task hung in afs_cell_purge run #5: crashed: INFO: task hung in afs_cell_purge run #6: crashed: INFO: task hung in afs_cell_purge run #7: crashed: INFO: task hung in afs_cell_purge run #8: OK run #9: OK run #10: OK run #11: OK 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: INFO: task hung in afs_cell_purge, types: [HANG] # git bisect bad 9483c37e2d1c48e45d1416327122ff6010ec7f8d Bisecting: 11 revisions left to test after this (roughly 4 steps) [58a5937d50d800e15a8fc3ab9103583fc7b49ebf] Merge tag 'afs-next-20250310' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs testing commit 58a5937d50d800e15a8fc3ab9103583fc7b49ebf gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 587d2c3cabff315df79d185efc4306056068b6543a506a8ed50a05cbf5da10ed run #0: crashed: INFO: task hung in afs_cell_purge run #1: crashed: INFO: task hung in afs_cell_purge run #2: crashed: INFO: task hung in afs_cell_purge run #3: crashed: INFO: task hung in afs_cell_purge run #4: crashed: INFO: task hung in afs_cell_purge run #5: crashed: INFO: task hung in afs_cell_purge run #6: crashed: INFO: task hung in afs_cell_purge run #7: crashed: INFO: task hung in afs_cell_purge run #8: crashed: INFO: task hung in afs_cell_purge run #9: crashed: INFO: task hung in afs_cell_purge run #10: OK run #11: OK 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: INFO: task hung in afs_cell_purge, types: [HANG] # git bisect bad 58a5937d50d800e15a8fc3ab9103583fc7b49ebf Bisecting: 4 revisions left to test after this (roughly 3 steps) [469c82b558628482002e4819d35b7670f0a989fd] afs: Drop the net parameter from afs_unuse_cell() testing commit 469c82b558628482002e4819d35b7670f0a989fd gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 3228226428bb5231d812072a88a40b87ec34898de3a21fd930ba0d4b151ba163 run #0: crashed: INFO: task hung in afs_cell_purge run #1: crashed: INFO: task hung in afs_cell_purge run #2: crashed: INFO: task hung in afs_cell_purge run #3: crashed: INFO: task hung in afs_cell_purge run #4: crashed: INFO: task hung in afs_cell_purge run #5: crashed: INFO: task hung in afs_cell_purge run #6: crashed: INFO: task hung in afs_cell_purge run #7: OK run #8: OK run #9: OK run #10: OK run #11: crashed: INFO: task hung in afs_cell_purge 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: INFO: task hung in afs_cell_purge, types: [HANG] # git bisect bad 469c82b558628482002e4819d35b7670f0a989fd Bisecting: 2 revisions left to test after this (roughly 2 steps) [4f67bcf6d6242bb82a2349a6cee94b96136f6625] afs: Improve afs_volume tracing to display a debug ID testing commit 4f67bcf6d6242bb82a2349a6cee94b96136f6625 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 6401f0c0867ff8fb8929b9b00b4b5656940f8059b9c85f1cf69a6f40a9657b7f run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #10: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #11: OK run #12: OK run #13: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release, types: [UNKNOWN] # git bisect bad 4f67bcf6d6242bb82a2349a6cee94b96136f6625 Bisecting: 0 revisions left to test after this (roughly 1 step) [1d0b929fc070b4115403a0a6206a0c6a62dd61f5] afs: Change dynroot to create contents on demand testing commit 1d0b929fc070b4115403a0a6206a0c6a62dd61f5 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 116542057a527bffc0e74464d575d59558f7824a9f4ab63aa086d8c107c7664d run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #8: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #9: OK run #10: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release run #11: crashed: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release 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: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release, types: [UNKNOWN] # git bisect bad 1d0b929fc070b4115403a0a6206a0c6a62dd61f5 Bisecting: 0 revisions left to test after this (roughly 0 steps) [4c5ad63f85ef984cc809538b2dcbc113aed82330] afs: Remove the "autocell" mount option testing commit 4c5ad63f85ef984cc809538b2dcbc113aed82330 gcc compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 kernel signature: 12f66faba4cd654def0503117143c5dcc6d97501a99230961a5a616a6a40a00c all runs: OK false negative chance: 0.000 # git bisect good 4c5ad63f85ef984cc809538b2dcbc113aed82330 1d0b929fc070b4115403a0a6206a0c6a62dd61f5 is the first bad commit commit 1d0b929fc070b4115403a0a6206a0c6a62dd61f5 Author: David Howells Date: Mon Feb 24 09:52:58 2025 +0000 afs: Change dynroot to create contents on demand Change the AFS dynamic root to do things differently: (1) Rather than having the creation of cell records create inodes and dentries for cell mountpoints, create them on demand during lookup. This simplifies cell management and locking as we no longer have to create these objects in advance *and* on speculative lookup by the user for a cell that isn't precreated. (2) Rather than using the libfs dentry-based readdir (the dentries now no longer exist until accessed from (1)), have readdir generate the contents by reading the list of cells. The @cell symlinks get pushed in positions 2 and 3 if rootcell has been configured. (3) Make the @cell symlink dentries persist for the life of the superblock or until reclaimed, but make cell mountpoints disappear immediately if unused. It's not perfect as someone doing an "ls -l /afs" may create a whole bunch of dentries which will be garbage collected immediately. But any dentry that gets automounted will be pinned by the mount, so it shouldn't be too bad. (4) Allocate the inode numbers for the cell mountpoints from an IDR to prevent duplicates appearing in the event it cycles round. The number allocated from the IDR is doubled to provide two inode numbers - one for the normal cell name (RO) and one for the dotted cell name (RW). Signed-off-by: David Howells cc: Marc Dionne cc: linux-afs@lists.infradead.org cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/20250224234154.2014840-8-dhowells@redhat.com/ # v1 Link: https://lore.kernel.org/r/20250310094206.801057-4-dhowells@redhat.com/ # v4 fs/afs/cell.c | 9 +- fs/afs/dynroot.c | 482 ++++++++++++++++++--------------------------- fs/afs/internal.h | 8 +- fs/afs/main.c | 3 + fs/afs/super.c | 8 +- include/trace/events/afs.h | 2 + 6 files changed, 213 insertions(+), 299 deletions(-) accumulated error probability: 0.00 culprit signature: 116542057a527bffc0e74464d575d59558f7824a9f4ab63aa086d8c107c7664d parent signature: 12f66faba4cd654def0503117143c5dcc6d97501a99230961a5a616a6a40a00c reproducer is flaky (0.39 repro chance estimate) revisions tested: 25, total time: 6h53m21.25699737s (build: 1h50m2.478087687s, test: 4h44m53.096715623s) first bad commit: 1d0b929fc070b4115403a0a6206a0c6a62dd61f5 afs: Change dynroot to create contents on demand recipients (to): ["dhowells@redhat.com"] recipients (cc): [] crash: BUG: unable to handle kernel NULL pointer dereference in afs_dynroot_d_release RSP: 002b:00007f60489fe038 EFLAGS: 00000246 ORIG_RAX: 000000000000013c RAX: ffffffffffffffda RBX: 00007f60499b6080 RCX: 00007f604978e969 RDX: ffffffffffffff9c RSI: 0000200000000480 RDI: ffffffffffffff9c RBP: 00007f60489fe090 R08: 0000000000000002 R09: 0000000000000000 R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 00007f60499b6080 R15: 00007ffd88a78228 BUG: kernel NULL pointer dereference, address: 0000000000000018 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 800000017187b067 P4D 800000017187b067 PUD 0 Oops: Oops: 0000 [#1] PREEMPT SMP PTI CPU: 1 UID: 0 PID: 7480 Comm: syz.2.899 Not tainted 6.14.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:afs_dynroot_d_release+0xb/0x20 fs/afs/dynroot.c:169 Code: cc 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b b7 b0 00 00 00 <48> 8b 7e 18 ba 16 00 00 00 e9 17 72 ff ff 0f 1f 80 00 00 00 00 90 RSP: 0018:ffffc900053dfd80 EFLAGS: 00010282 RAX: ffffffff82e766c0 RBX: ffff88817b126c30 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff88817b126c30 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000089 R10: 0000000000000002 R11: ffffffff8199ead0 R12: ffff8881037eb001 R13: ffff88817b126c30 R14: ffff88817b126ce8 R15: 00000000fffffffe FS: 00007f60489fe6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000018 CR3: 0000000104fea000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __dentry_kill+0xd0/0x1e0 fs/dcache.c:648 dput+0xa7/0xf0 fs/dcache.c:885 do_renameat2+0x4b5/0x650 fs/namei.c:5230 __do_sys_renameat2 fs/namei.c:5260 [inline] __se_sys_renameat2 fs/namei.c:5257 [inline] __x64_sys_renameat2+0x47/0x60 fs/namei.c:5257 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x8f/0x170 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f604978e969 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:00007f60489fe038 EFLAGS: 00000246 ORIG_RAX: 000000000000013c RAX: ffffffffffffffda RBX: 00007f60499b6080 RCX: 00007f604978e969 RDX: ffffffffffffff9c RSI: 0000200000000480 RDI: ffffffffffffff9c RBP: 00007f60489fe090 R08: 0000000000000002 R09: 0000000000000000 R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 00007f60499b6080 R15: 00007ffd88a78228 Modules linked in: CR2: 0000000000000018 ---[ end trace 0000000000000000 ]--- RIP: 0010:afs_dynroot_d_release+0xb/0x20 fs/afs/dynroot.c:169 Code: cc 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b b7 b0 00 00 00 <48> 8b 7e 18 ba 16 00 00 00 e9 17 72 ff ff 0f 1f 80 00 00 00 00 90 RSP: 0018:ffffc900053dfd80 EFLAGS: 00010282 RAX: ffffffff82e766c0 RBX: ffff88817b126c30 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff88817b126c30 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000089 R10: 0000000000000002 R11: ffffffff8199ead0 R12: ffff8881037eb001 R13: ffff88817b126c30 R14: ffff88817b126ce8 R15: 00000000fffffffe FS: 00007f60489fe6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000018 CR3: 0000000104fea000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: cc int3 1: 66 66 66 66 66 2e 0f data16 data16 data16 data16 cs nopw 0x0(%rax,%rax,1) 8: 1f 84 00 00 00 00 00 f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: f3 0f 1e fa endbr64 23: 48 8b b7 b0 00 00 00 mov 0xb0(%rdi),%rsi * 2a: 48 8b 7e 18 mov 0x18(%rsi),%rdi <-- trapping instruction 2e: ba 16 00 00 00 mov $0x16,%edx 33: e9 17 72 ff ff jmp 0xffff724f 38: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 3f: 90 nop