ci starts bisection 2025-07-21 00:10:58.586003812 +0000 UTC m=+152074.685004877 bisecting cause commit starting from bf61759db409ce21a8f2a5bb442b7c35905a713d building syzkaller on 7117feecc9626dc60b06fb3e91c0f7632d99d30b ensuring issue is reproducible on original commit bf61759db409ce21a8f2a5bb442b7c35905a713d testing commit bf61759db409ce21a8f2a5bb442b7c35905a713d gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0140da1484a4f1daf557b8576d4e307457933fec7fa317eb3aaac6a662f70dea all runs: crashed: INFO: task hung in io_wq_put_and_exit representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [memleak ubsan bug_or_warning kasan locking atomic_sleep], they are not needed testing commit bf61759db409ce21a8f2a5bb442b7c35905a713d gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e9f313121db37c8bf9eecfaa380c7017617dfab0adfce53c00c95c10c56f42de all runs: OK false negative chance: 0.000 kconfig minimization: base=4089 full=8469 leaves diff=2183 split chunks (needed=false): <2183> split chunk #0 of len 2183 into 5 parts testing without sub-chunk 1/5 testing commit bf61759db409ce21a8f2a5bb442b7c35905a713d gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 15165c93add2ab5d979efb0ebc4c2ca0d6b52f9011d13408b033d140dc99be32 all runs: OK false negative chance: 0.000 testing without sub-chunk 2/5 testing commit bf61759db409ce21a8f2a5bb442b7c35905a713d gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cbba1fc3dc7ff3429e9eadddb32e88a6ebbd8c36e0f2d6cb3d857b86093a6256 all runs: crashed: INFO: task hung in io_wq_put_and_exit representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 testing commit bf61759db409ce21a8f2a5bb442b7c35905a713d gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4116f234b181424add1110deeca25ed14610f73a982106d708810bedaa4c1d37 all runs: crashed: INFO: task hung in io_wq_put_and_exit representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 testing commit bf61759db409ce21a8f2a5bb442b7c35905a713d gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7784b25f6b4eda97cf0416a0ab222cfded0e77b4727b5aa2988f44cee4f0e3e0 all runs: crashed: INFO: task hung in io_wq_put_and_exit representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 testing commit bf61759db409ce21a8f2a5bb442b7c35905a713d gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2fbdced7ed9e72daffaa5cb6ed3e36babcab05d578c8a16095b60833377d1271 all runs: crashed: INFO: task hung in io_wq_put_and_exit representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG] the chunk can be dropped minimized to 437 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_THP_MIGRATION ARCH_HAS_CRC32 ARCH_HAS_CRC64 ARCH_HAS_CRC_T10DIF ARCH_HAS_USER_SHADOW_STACK ARCH_SUPPORTS_HUGE_PFNMAP ARCH_SUPPORTS_PMD_PFNMAP ARCH_SUPPORTS_PUD_PFNMAP ARCH_WANT_PMD_MKWRITE ASM_MODVERSIONS ASUS_TF103C_DOCK ASYNC_CORE ASYNC_MEMCPY ASYNC_PQ ASYNC_RAID6_RECOV ASYNC_TX_DMA ASYNC_XOR ATARI_PARTITION ATA_GENERIC ATA_OVER_ETH ATH10K ATH10K_CE ATH10K_LEDS ATH10K_PCI ATH10K_USB ATH11K ATH6KL ATH6KL_USB ATH9K ATH9K_AHB ATH9K_BTCOEX_SUPPORT ATH9K_CHANNEL_CONTEXT ATH9K_COMMON ATH9K_COMMON_DEBUG ATH9K_COMMON_SPECTRAL ATH9K_DEBUGFS ATH9K_DYNACK ATH9K_HTC ATH9K_HTC_DEBUGFS ATH9K_HW ATH9K_PCI ATH9K_PCOEM ATH9K_RFKILL ATH_COMMON ATM ATM_BR2684 ATM_CLIP ATM_DRIVERS ATM_LANE ATM_MPOA ATM_TCP AUXILIARY_BUS AX25 AX25_DAMA_SLAVE AX88796B_PHY BAREUDP BATMAN_ADV BATMAN_ADV_BATMAN_V BATMAN_ADV_BLA BATMAN_ADV_DAT BATMAN_ADV_MCAST BATMAN_ADV_NC BCACHE BCACHEFS_DEBUG BCACHEFS_ERASURE_CODING BCACHEFS_FS BCACHEFS_POSIX_ACL BCACHEFS_QUOTA BCACHEFS_SIX_OPTIMISTIC_SPIN BCMA BCMA_HOST_PCI_POSSIBLE BEFS_FS BFQ_CGROUP_DEBUG BFQ_GROUP_IOSCHED BFS_FS BIG_KEYS BLK_CGROUP_PUNT_BIO BLK_CGROUP_RWSTAT BLK_DEV_BSGLIB BLK_DEV_INITRD 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_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_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 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_CCITT 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_CURVE25519 CRYPTO_LIB_CURVE25519_GENERIC CRYPTO_LIB_CURVE25519_INTERNAL CRYPTO_LIB_DES CRYPTO_LIB_POLY1305 CRYPTO_LIB_POLY1305_GENERIC CRYPTO_LIB_SM3 CRYPTO_LRW CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_MICHAEL_MIC CRYPTO_NHPOLY1305 CRYPTO_NHPOLY1305_AVX2 CRYPTO_NHPOLY1305_SSE2 CRYPTO_PCBC CRYPTO_PCRYPT 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_SHA512_SSSE3 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 DMA_CMA FSCACHE FUSE_FS GPIOLIB HAMRADIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_RTRS_CLIENT IOSCHED_BFQ ISA_BUS LIBNVDIMM MAC80211 MAC80211_DEBUGFS MAC80211_LEDS MMC MTD NET_CLS_U32 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 WLAN WLAN_VENDOR_ATH X86_X32_ABI] picked [v6.15 v6.14 v6.13 v6.11 v6.9 v6.7 v6.5 v6.3 v6.0 v5.17 v5.14 v5.11 v5.8 v5.5 v5.2 v4.20 v4.19] out of 38 release tags testing release v6.15 testing commit 0ff41df1cb268fc69e703a08a57ee14ae967d0ca gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c0b70bb8566e0b3e3b2e799dcea810853f0680a3a265220c582aa5adbad772d7 run #0: crashed: INFO: task hung in io_wq_put_and_exit run #1: crashed: INFO: task hung in io_wq_put_and_exit run #2: crashed: INFO: task hung in io_wq_put_and_exit run #3: crashed: INFO: task hung in io_wq_put_and_exit run #4: crashed: INFO: task hung in io_wq_put_and_exit run #5: crashed: INFO: task hung in io_wq_put_and_exit run #6: crashed: INFO: task hung in io_wq_put_and_exit run #7: crashed: INFO: task hung in io_wq_put_and_exit run #8: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3283151432" "root@10.128.10.24:./syz-executor3283151432"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.24, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u6, OpenSSL 3.0.16 11 Feb 2025 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.24 [10.128.10.24] port 22. debug1: fd 3 clearing O_NONBLOCK debug1: Connection established. debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa_sk type -1 debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /root/.ssh/id_ed25519 type -1 debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: identity file /root/.ssh/id_ed25519_sk type -1 debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /root/.ssh/id_xmss type -1 debug1: identity file /root/.ssh/id_xmss-cert type -1 debug1: identity file /root/.ssh/id_dsa type -1 debug1: identity file /root/.ssh/id_dsa-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u6 Connection timed out during banner exchange Connection to 10.128.10.24 port 22 timed out scp: Connection closed run #9: crashed: INFO: task hung in io_wq_put_and_exit representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG] testing release v6.14 testing commit 38fec10eb60d687e30c8c6b5420d86e8149f7557 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fbd85deb148ea0bbfec0ad448f048fd53507c4dd4d45ef3f028e9125e0863ae2 run #0: crashed: INFO: task hung in io_wq_put_and_exit run #1: crashed: INFO: task hung in io_wq_put_and_exit run #2: crashed: INFO: task hung in io_wq_put_and_exit run #3: crashed: INFO: task hung in io_wq_put_and_exit run #4: crashed: INFO: task hung in io_wq_put_and_exit run #5: crashed: INFO: task hung in io_wq_put_and_exit run #6: crashed: INFO: task hung in io_wq_put_and_exit run #7: OK run #8: OK run #9: OK representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG] testing release v6.13 testing commit ffd294d346d185b70e28b1a28abe367bbfe53c04 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 37fa28081385fdef3780289cb41c1ebcd6025b8d14dce708d8b3b9807cb16936 run #0: crashed: INFO: task hung in io_wq_put_and_exit run #1: crashed: INFO: task hung in io_wq_put_and_exit run #2: crashed: INFO: task hung in io_wq_put_and_exit run #3: crashed: INFO: task hung in io_wq_put_and_exit run #4: crashed: INFO: task hung in io_wq_put_and_exit run #5: crashed: INFO: task hung in io_wq_put_and_exit run #6: crashed: INFO: task hung in io_wq_put_and_exit run #7: crashed: INFO: task hung in io_wq_put_and_exit run #8: crashed: INFO: task hung in io_wq_put_and_exit run #9: OK representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG] testing release v6.11 testing commit 98f7e32f20d28ec452afb208f9cffc08448a2652 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4321cf4950545076b774c7d65443e418034c36117f2e18470e3c4b77756a408c run #0: crashed: INFO: task hung in io_wq_put_and_exit run #1: crashed: INFO: task hung in io_wq_put_and_exit run #2: crashed: INFO: task hung in io_wq_put_and_exit run #3: crashed: INFO: task hung in io_wq_put_and_exit run #4: crashed: INFO: task hung in io_wq_put_and_exit run #5: OK run #6: OK run #7: crashed: INFO: task hung in io_wq_put_and_exit run #8: crashed: INFO: task hung in io_wq_put_and_exit run #9: crashed: INFO: task hung in io_wq_put_and_exit representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG] testing release v6.9 testing commit a38297e3fb012ddfa7ce0321a7e5a8daeb1872b6 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 97f4e0cc281c711091efe4700e00ad82dbbbacf8ec3c83d8e0a0d840e190b8a5 all runs: crashed: INFO: task hung in io_wq_put_and_exit representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG] testing release v6.7 testing commit 0dd3ee31125508cd67f7e7172247f05b7fd1753a gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7fc52246e7ee6a3f0e3214babd9b9e2f618c8780eeef65967c040ba6eb6b021d all runs: crashed: INFO: task hung in io_wq_put_and_exit representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG] testing release v6.5 testing commit 2dde18cd1d8fac735875f2e4987f11817cc0bc2c gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7a68f528c19fc3ee326bccc2ce2dcf772843be6c567c5ba342fb8b4db81c3b18 all runs: OK false negative chance: 0.000 # git bisect start 0dd3ee31125508cd67f7e7172247f05b7fd1753a 2dde18cd1d8fac735875f2e4987f11817cc0bc2c Bisecting: 16833 revisions left to test after this (roughly 14 steps) [ec4c20ca09831ddba8fac10a7d82a9902e96e717] Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net testing commit ec4c20ca09831ddba8fac10a7d82a9902e96e717 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 556064f101e195f5eb86cf59ea4cbb11c17831d4fdc697465abbf5574d6c30a0 all runs: crashed: INFO: task hung in io_wq_put_and_exit representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG] # git bisect bad ec4c20ca09831ddba8fac10a7d82a9902e96e717 Bisecting: 8496 revisions left to test after this (roughly 13 steps) [4a3b1007eeb26b2bb7ae4d734cc8577463325165] Merge tag 'pinctrl-v6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl testing commit 4a3b1007eeb26b2bb7ae4d734cc8577463325165 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 77371abb5fde4afa2580200c2ae549aee1b09d2015f4b0b79706d94600c0ed39 all runs: crashed: INFO: task hung in io_wq_put_and_exit representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG] # git bisect bad 4a3b1007eeb26b2bb7ae4d734cc8577463325165 Bisecting: 4343 revisions left to test after this (roughly 12 steps) [651a00bc56403161351090a9d7ddbd7095975324] Merge tag 'slab-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab testing commit 651a00bc56403161351090a9d7ddbd7095975324 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b3dd54ed37275a571c4892816b909c8ab1495483739a60d6a4fff95243dc9a9f all runs: OK false negative chance: 0.000 # git bisect good 651a00bc56403161351090a9d7ddbd7095975324 Bisecting: 1985 revisions left to test after this (roughly 11 steps) [461f35f014466c4e26dca6be0f431f57297df3f2] Merge tag 'drm-next-2023-08-30' of git://anongit.freedesktop.org/drm/drm testing commit 461f35f014466c4e26dca6be0f431f57297df3f2 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1153168339875119e3d3484b4d4e185328706f0da17130d615dd191a33e17236 all runs: crashed: INFO: task hung in io_wq_put_and_exit representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG] # git bisect bad 461f35f014466c4e26dca6be0f431f57297df3f2 Bisecting: 1178 revisions left to test after this (roughly 10 steps) [e8b2ad875ffa1c213d047e02c9c1b7db5f149241] drm/amdgpu: Remove duplicated includes testing commit e8b2ad875ffa1c213d047e02c9c1b7db5f149241 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 30010e2c76de3ff356eef7c3b3442b3b641759494be75be72e26b568f3bee8d3 all runs: OK false negative chance: 0.000 # git bisect good e8b2ad875ffa1c213d047e02c9c1b7db5f149241 Bisecting: 587 revisions left to test after this (roughly 9 steps) [daa22f5a78c27412e88d31780c4a6262cda559cd] Merge tag 'modules-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux testing commit daa22f5a78c27412e88d31780c4a6262cda559cd gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d12aaec9700c6c7826acefd889b5ff209ed1fa256d90157b287f14d2a2c5f456 all runs: OK false negative chance: 0.000 # git bisect good daa22f5a78c27412e88d31780c4a6262cda559cd Bisecting: 319 revisions left to test after this (roughly 8 steps) [87fa732dc5ff9ea6a2e75b630f7931899e845eb1] Merge tag 'x86-core-2023-08-30-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit 87fa732dc5ff9ea6a2e75b630f7931899e845eb1 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3af00d8bd700a4c766a16f3d8f49f5fd85c5ff224339f8b68b2b24582e8674c7 all runs: crashed: INFO: task hung in io_wq_put_and_exit representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG] # git bisect bad 87fa732dc5ff9ea6a2e75b630f7931899e845eb1 Bisecting: 151 revisions left to test after this (roughly 7 steps) [146afeb235ccec10c17ad8ea26327c0c79dbd968] block: use strscpy() to instead of strncpy() testing commit 146afeb235ccec10c17ad8ea26327c0c79dbd968 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5e9ee81868b61de54868273f3985e741f9a51beea8201618cddab953b424e7bf all runs: OK false negative chance: 0.000 # git bisect good 146afeb235ccec10c17ad8ea26327c0c79dbd968 Bisecting: 68 revisions left to test after this (roughly 6 steps) [6c1b980a7e79e55e951b4b2c47eefebc75071209] Merge tag 'dma-mapping-6.6-2023-08-29' of git://git.infradead.org/users/hch/dma-mapping testing commit 6c1b980a7e79e55e951b4b2c47eefebc75071209 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8dc8a4d36b3a9c636935decb9a788ef7dd1809e57424b00b79503e547366cbf1 all runs: crashed: INFO: task hung in io_wq_put_and_exit representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG] # git bisect bad 6c1b980a7e79e55e951b4b2c47eefebc75071209 Bisecting: 41 revisions left to test after this (roughly 5 steps) [e5598d6ae62626d261b046a2f19347c38681ff51] io_uring: compact SQ/CQ heads/tails testing commit e5598d6ae62626d261b046a2f19347c38681ff51 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6b57422842abafaa69dbf650bf2a0366e2596080a56605288626ac90b0af4283 all runs: crashed: INFO: task hung in io_wq_put_and_exit representative crash: INFO: task hung in io_wq_put_and_exit, types: [HANG] # git bisect bad e5598d6ae62626d261b046a2f19347c38681ff51 Bisecting: 20 revisions left to test after this (roughly 4 steps) [89226307b109f828566f0e024ee97b722167927c] io_uring: remove unnecessary forward declaration testing commit 89226307b109f828566f0e024ee97b722167927c gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 072878d6b6a018b2abc6193703f1b1429a240223250b2d2a3ed6f0dce6bb9835 all runs: OK false negative chance: 0.000 # git bisect good 89226307b109f828566f0e024ee97b722167927c Bisecting: 10 revisions left to test after this (roughly 3 steps) [d246c759c47eafe4688613e89b337e48c39c5968] io_uring: simplify io_run_task_work_sig return testing commit d246c759c47eafe4688613e89b337e48c39c5968 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 40c233d5513e80d77326bcdf290320fd598ea50d67a1132b9dbdde07f9939fce all runs: OK false negative chance: 0.000 # git bisect good d246c759c47eafe4688613e89b337e48c39c5968 Bisecting: 5 revisions left to test after this (roughly 3 steps) [b24c5d752962fa0970cd7e3d74b1cd0e843358de] io_uring: simplify big_cqe handling testing commit b24c5d752962fa0970cd7e3d74b1cd0e843358de gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c563e7550d8923fdeb2c7da7001a223e1cbbfc7c49ac8aca34ce3c81e3c45379 all runs: OK false negative chance: 0.000 # git bisect good b24c5d752962fa0970cd7e3d74b1cd0e843358de Bisecting: 2 revisions left to test after this (roughly 2 steps) [54927baf6c195fb512ac38b26a041ca44edb2e29] io_uring: reorder cqring_flush and wakeups testing commit 54927baf6c195fb512ac38b26a041ca44edb2e29 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9a5e3e9ecf799f90ff6acf8bd5ffb4a8f3bbbb6a3ff0963595c45ef101a55bb8 all runs: OK false negative chance: 0.000 # git bisect good 54927baf6c195fb512ac38b26a041ca44edb2e29 Bisecting: 0 revisions left to test after this (roughly 1 step) [093a650b757210bc856ca7f5349fb5a4bb9d4bd6] io_uring: force inline io_fill_cqe_req testing commit 093a650b757210bc856ca7f5349fb5a4bb9d4bd6 gcc compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 60dff9dab83dacf68da307ced2a251c902b09379e99213929cd7f37ddbd610e2 all runs: OK false negative chance: 0.000 # git bisect good 093a650b757210bc856ca7f5349fb5a4bb9d4bd6 e5598d6ae62626d261b046a2f19347c38681ff51 is the first bad commit commit e5598d6ae62626d261b046a2f19347c38681ff51 Author: Pavel Begunkov Date: Thu Aug 24 23:53:31 2023 +0100 io_uring: compact SQ/CQ heads/tails Queues heads and tails cache line aligned. That makes sq, cq taking 4 lines or 5 lines if we include the rest of struct io_rings (e.g. sq_flags is frequently accessed). Since modern io_uring is mostly single threaded, it doesn't make much send to spread them as such, it wastes space and puts additional pressure on caches. Put them all into a single line. Signed-off-by: Pavel Begunkov Link: https://lore.kernel.org/r/9c8deddf9a7ed32069235a530d1e117fb460bc4c.1692916914.git.asml.silence@gmail.com Signed-off-by: Jens Axboe include/linux/io_uring_types.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) accumulated error probability: 0.00 culprit signature: 6b57422842abafaa69dbf650bf2a0366e2596080a56605288626ac90b0af4283 parent signature: 60dff9dab83dacf68da307ced2a251c902b09379e99213929cd7f37ddbd610e2 revisions tested: 29, total time: 11h31m19.697546318s (build: 6h0m16.442337118s, test: 4h40m57.820692548s) first bad commit: e5598d6ae62626d261b046a2f19347c38681ff51 io_uring: compact SQ/CQ heads/tails recipients (to): ["asml.silence@gmail.com" "axboe@kernel.dk" "axboe@kernel.dk" "io-uring@vger.kernel.org"] recipients (cc): ["asml.silence@gmail.com" "linux-kernel@vger.kernel.org"] crash: INFO: task hung in io_wq_put_and_exit INFO: task syz.0.16:4808 blocked for more than 143 seconds. Not tainted 6.5.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.16 state:D stack:26544 pid:4808 ppid:2827 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xdde/0x32e0 kernel/sched/core.c:6710 schedule+0x132/0x220 kernel/sched/core.c:6786 schedule_timeout+0x221/0x260 kernel/time/timer.c:2143 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x3e6/0x5f0 kernel/sched/completion.c:106 io_wq_exit_workers io_uring/io-wq.c:1234 [inline] io_wq_put_and_exit+0x1d2/0x6c0 io_uring/io-wq.c:1262 io_uring_clean_tctx+0xf9/0x170 io_uring/tctx.c:193 io_uring_cancel_generic+0x477/0x6f0 io_uring/io_uring.c:3340 io_uring_files_cancel include/linux/io_uring.h:71 [inline] do_exit+0x45a/0x2740 kernel/exit.c:829 do_group_exit+0xb4/0x250 kernel/exit.c:1024 get_signal+0x1efc/0x22b0 kernel/signal.c:2877 arch_do_signal_or_restart+0x89/0x5f0 arch/x86/kernel/signal.c:308 exit_to_user_mode_loop kernel/entry/common.c:168 [inline] exit_to_user_mode_prepare+0x118/0x1f0 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x1e/0x60 kernel/entry/common.c:297 do_syscall_64+0x4c/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x6f/0xd9 RIP: 0033:0x7fb4c7b8e9a9 RSP: 002b:00007fb4c8a9d0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007fb4c7db5fa8 RCX: 00007fb4c7b8e9a9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fb4c7db5fa8 RBP: 00007fb4c7db5fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb4c7db5fac R13: 0000000000000000 R14: 00007ffee87be680 R15: 00007ffee87be768 INFO: task syz.1.17:4821 blocked for more than 145 seconds. Not tainted 6.5.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.17 state:D stack:27520 pid:4821 ppid:2823 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xdde/0x32e0 kernel/sched/core.c:6710 schedule+0x132/0x220 kernel/sched/core.c:6786 schedule_timeout+0x221/0x260 kernel/time/timer.c:2143 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x3e6/0x5f0 kernel/sched/completion.c:106 io_wq_exit_workers io_uring/io-wq.c:1234 [inline] io_wq_put_and_exit+0x1d2/0x6c0 io_uring/io-wq.c:1262 io_uring_clean_tctx+0xf9/0x170 io_uring/tctx.c:193 io_uring_cancel_generic+0x477/0x6f0 io_uring/io_uring.c:3340 io_uring_files_cancel include/linux/io_uring.h:71 [inline] do_exit+0x45a/0x2740 kernel/exit.c:829 do_group_exit+0xb4/0x250 kernel/exit.c:1024 get_signal+0x1efc/0x22b0 kernel/signal.c:2877 arch_do_signal_or_restart+0x89/0x5f0 arch/x86/kernel/signal.c:308 exit_to_user_mode_loop kernel/entry/common.c:168 [inline] exit_to_user_mode_prepare+0x118/0x1f0 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x1e/0x60 kernel/entry/common.c:297 do_syscall_64+0x4c/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x6f/0xd9 RIP: 0033:0x7f1d2b98e9a9 RSP: 002b:00007f1d2c7850e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f1d2bbb5fa8 RCX: 00007f1d2b98e9a9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f1d2bbb5fa8 RBP: 00007f1d2bbb5fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1d2bbb5fac R13: 0000000000000000 R14: 00007ffe76b03920 R15: 00007ffe76b03a08 INFO: task syz.5.20:4827 blocked for more than 147 seconds. Not tainted 6.5.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.20 state:D stack:27520 pid:4827 ppid:2838 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xdde/0x32e0 kernel/sched/core.c:6710 schedule+0x132/0x220 kernel/sched/core.c:6786 schedule_timeout+0x221/0x260 kernel/time/timer.c:2143 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x3e6/0x5f0 kernel/sched/completion.c:106 io_wq_exit_workers io_uring/io-wq.c:1234 [inline] io_wq_put_and_exit+0x1d2/0x6c0 io_uring/io-wq.c:1262 io_uring_clean_tctx+0xf9/0x170 io_uring/tctx.c:193 io_uring_cancel_generic+0x477/0x6f0 io_uring/io_uring.c:3340 io_uring_files_cancel include/linux/io_uring.h:71 [inline] do_exit+0x45a/0x2740 kernel/exit.c:829 do_group_exit+0xb4/0x250 kernel/exit.c:1024 get_signal+0x1efc/0x22b0 kernel/signal.c:2877 arch_do_signal_or_restart+0x89/0x5f0 arch/x86/kernel/signal.c:308 exit_to_user_mode_loop kernel/entry/common.c:168 [inline] exit_to_user_mode_prepare+0x118/0x1f0 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x1e/0x60 kernel/entry/common.c:297 do_syscall_64+0x4c/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x6f/0xd9 RIP: 0033:0x7f060718e9a9 RSP: 002b:00007f06080ae0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f06073b5fa8 RCX: 00007f060718e9a9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f06073b5fa8 RBP: 00007f06073b5fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f06073b5fac R13: 0000000000000000 R14: 00007ffedc4a68e0 R15: 00007ffedc4a69c8 INFO: task syz.6.18:4837 blocked for more than 150 seconds. Not tainted 6.5.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.6.18 state:D stack:27520 pid:4837 ppid:2828 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xdde/0x32e0 kernel/sched/core.c:6710 schedule+0x132/0x220 kernel/sched/core.c:6786 schedule_timeout+0x221/0x260 kernel/time/timer.c:2143 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x3e6/0x5f0 kernel/sched/completion.c:106 io_wq_exit_workers io_uring/io-wq.c:1234 [inline] io_wq_put_and_exit+0x1d2/0x6c0 io_uring/io-wq.c:1262 io_uring_clean_tctx+0xf9/0x170 io_uring/tctx.c:193 io_uring_cancel_generic+0x477/0x6f0 io_uring/io_uring.c:3340 io_uring_files_cancel include/linux/io_uring.h:71 [inline] do_exit+0x45a/0x2740 kernel/exit.c:829 do_group_exit+0xb4/0x250 kernel/exit.c:1024 get_signal+0x1efc/0x22b0 kernel/signal.c:2877 arch_do_signal_or_restart+0x89/0x5f0 arch/x86/kernel/signal.c:308 exit_to_user_mode_loop kernel/entry/common.c:168 [inline] exit_to_user_mode_prepare+0x118/0x1f0 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x1e/0x60 kernel/entry/common.c:297 do_syscall_64+0x4c/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x6f/0xd9 RIP: 0033:0x7f6b3eb8e9a9 RSP: 002b:00007f6b3e9ff0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f6b3edb5fa8 RCX: 00007f6b3eb8e9a9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f6b3edb5fa8 RBP: 00007f6b3edb5fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6b3edb5fac R13: 0000000000000000 R14: 00007ffc32157540 R15: 00007ffc32157628 INFO: task syz.3.19:4848 blocked for more than 152 seconds. Not tainted 6.5.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.19 state:D stack:28544 pid:4848 ppid:2829 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xdde/0x32e0 kernel/sched/core.c:6710 schedule+0x132/0x220 kernel/sched/core.c:6786 schedule_timeout+0x221/0x260 kernel/time/timer.c:2143 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x3e6/0x5f0 kernel/sched/completion.c:106 io_wq_exit_workers io_uring/io-wq.c:1234 [inline] io_wq_put_and_exit+0x1d2/0x6c0 io_uring/io-wq.c:1262 io_uring_clean_tctx+0xf9/0x170 io_uring/tctx.c:193 io_uring_cancel_generic+0x477/0x6f0 io_uring/io_uring.c:3340 io_uring_files_cancel include/linux/io_uring.h:71 [inline] do_exit+0x45a/0x2740 kernel/exit.c:829 do_group_exit+0xb4/0x250 kernel/exit.c:1024 get_signal+0x1efc/0x22b0 kernel/signal.c:2877 arch_do_signal_or_restart+0x89/0x5f0 arch/x86/kernel/signal.c:308 exit_to_user_mode_loop kernel/entry/common.c:168 [inline] exit_to_user_mode_prepare+0x118/0x1f0 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x1e/0x60 kernel/entry/common.c:297 do_syscall_64+0x4c/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x6f/0xd9 RIP: 0033:0x7faf9c58e9a9 RSP: 002b:00007faf9d4540e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007faf9c7b5fa8 RCX: 00007faf9c58e9a9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007faf9c7b5fa8 RBP: 00007faf9c7b5fa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007faf9c7b5fac R13: 0000000000000000 R14: 00007ffd4caa56f0 R15: 00007ffd4caa57d8