ci starts bisection 2023-12-01 16:16:54.141008552 +0000 UTC m=+131923.540907935 bisecting cause commit starting from 753c8608f3e579307493a63b9242667aee35a751 building syzkaller on f819d6f7cb99737851dcaaa51f11190138fd48d5 ensuring issue is reproducible on original commit 753c8608f3e579307493a63b9242667aee35a751 testing commit 753c8608f3e579307493a63b9242667aee35a751 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c3169259eab7bd69e6b0a8f49ab55d37f3ffc84821fb3e1bb4a5820570b38706 run #0: crashed: INFO: rcu detected stall in kernfs_fop_read_iter run #1: crashed: INFO: rcu detected stall in newfstatat run #2: crashed: INFO: rcu detected stall in clone run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in security_file_open run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in clone run #7: crashed: INFO: rcu detected stall in addrconf_dad_work run #8: crashed: INFO: rcu detected stall in addrconf_dad_work run #9: crashed: INFO: rcu detected stall in addrconf_dad_work run #10: crashed: INFO: rcu detected stall in corrupted run #11: crashed: INFO: rcu detected stall in do_idle run #12: crashed: INFO: rcu detected stall in addrconf_dad_work run #13: crashed: INFO: rcu detected stall in corrupted run #14: crashed: INFO: rcu detected stall in sys_openat run #15: crashed: INFO: rcu detected stall in addrconf_dad_work run #16: crashed: INFO: rcu detected stall in addrconf_dad_work run #17: crashed: INFO: rcu detected stall in corrupted run #18: crashed: INFO: rcu detected stall in tc_modify_qdisc run #19: crashed: INFO: rcu detected stall in sys_execve representative crash: INFO: rcu detected stall in kernfs_fop_read_iter, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed testing commit 753c8608f3e579307493a63b9242667aee35a751 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2f4090b82d6cf250d50f2ec2e6c0598bac91e827a5ce4c8850a1093231b5965f run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in security_file_open run #2: crashed: INFO: rcu detected stall in validate_mm run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in gc_worker run #6: crashed: INFO: rcu detected stall in sys_exit_group run #7: crashed: INFO: rcu detected stall in gc_worker run #8: crashed: INFO: rcu detected stall in gc_worker run #9: crashed: INFO: rcu detected stall in gc_worker representative crash: INFO: rcu detected stall in corrupted, types: [HANG] the bug reproduces without the instrumentation disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed kconfig minimization: base=3923 full=7654 leaves diff=2004 split chunks (needed=false): <2004> split chunk #0 of len 2004 into 5 parts testing without sub-chunk 1/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 753c8608f3e579307493a63b9242667aee35a751 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d72b0b71626b9bdc5109dd46f2c9bf1ebd97aab5bb631cecc5a9006532c8e74e run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in sys_exit_group run #4: crashed: INFO: rcu detected stall in sys_exit_group run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in gc_worker run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in sys_exit_group run #9: crashed: INFO: rcu detected stall in gc_worker representative crash: INFO: rcu detected stall in do_idle, types: [HANG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 753c8608f3e579307493a63b9242667aee35a751 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fc05c0f4cb006bbc23e1470efba7e4efe82777ff333662ee6afb58aade246598 run #0: crashed: INFO: rcu detected stall in sys_execve run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in sys_execve run #3: crashed: INFO: rcu detected stall in wb_workfn run #4: crashed: INFO: rcu detected stall in sys_execve run #5: crashed: INFO: rcu detected stall in wb_workfn run #6: crashed: INFO: rcu detected stall in ext4_end_io_rsv_work run #7: crashed: INFO: rcu detected stall in security_file_free run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in gc_worker representative crash: INFO: rcu detected stall in sys_execve, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 753c8608f3e579307493a63b9242667aee35a751 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a96c84bd6b4f9c2215a4487ee8d56a0f20c0ec50bbe675ad31af03308cf08ef6 all runs: OK false negative chance: 0.000 testing without sub-chunk 4/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 753c8608f3e579307493a63b9242667aee35a751 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 195dc3c4018c61fce6fdb83c4b43e944eebe7913b345c61afed1fe72e89c8a8b run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in sys_exit_group run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in do_idle run #4: crashed: INFO: rcu detected stall in do_idle run #5: crashed: INFO: rcu detected stall in do_idle run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in gc_worker run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in gc_worker representative crash: INFO: rcu detected stall in corrupted, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed testing commit 753c8608f3e579307493a63b9242667aee35a751 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4208e008a79c13b5e078d73151ba917a7cd9bc50a215d8210da1acfd8578ad4f run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in do_idle run #2: crashed: INFO: rcu detected stall in do_idle run #3: crashed: INFO: rcu detected stall in do_idle run #4: crashed: INFO: rcu detected stall in do_idle run #5: crashed: INFO: rcu detected stall in do_idle run #6: crashed: INFO: rcu detected stall in do_idle run #7: crashed: INFO: rcu detected stall in do_idle run #8: crashed: BUG: soft lockup in smp_call_function run #9: crashed: BUG: soft lockup in smp_call_function representative crash: INFO: rcu detected stall in do_idle, types: [HANG] the chunk can be dropped minimized to 401 configs; suspects: [AX25 BRIDGE BRIDGE_NETFILTER CAN CFG80211 CHECKPOINT_RESTORE DVB_CORE FB_CORE FSCACHE HAMRADIO HSR INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_USER_ACCESS INPUT_JOYSTICK INPUT_MOUSE IP6_NF_RAW IPV6_MULTIPLE_TABLES IP_NF_RAW IP_SET IP_VS IP_VS_NQ IP_VS_OVF IP_VS_PE_SIP IP_VS_PROTO_AH IP_VS_PROTO_AH_ESP IP_VS_PROTO_ESP IP_VS_PROTO_SCTP IP_VS_PROTO_UDP IP_VS_RR IP_VS_SED IP_VS_SH IP_VS_TWOS IP_VS_WLC IP_VS_WRR IRQ_BYPASS_MANAGER IRQ_POLL IR_IGORPLUGUSB IR_IGUANA IR_IMON IR_MCEUSB IR_REDRAT3 IR_STREAMZAP IR_TTUSBIR ISDN ISDN_CAPI_MIDDLEWARE JFFS2_CMODE_PRIORITY JFFS2_COMPRESSION_OPTIONS JFFS2_FS JFFS2_FS_POSIX_ACL JFFS2_FS_SECURITY JFFS2_FS_WRITEBUFFER JFFS2_FS_XATTR JFFS2_LZO JFFS2_RTIME JFFS2_RUBIN JFFS2_SUMMARY JFFS2_ZLIB JFS_DEBUG JFS_FS JFS_POSIX_ACL JFS_SECURITY JOYSTICK_IFORCE JOYSTICK_IFORCE_USB JOYSTICK_XPAD JOYSTICK_XPAD_FF JOYSTICK_XPAD_LEDS KARMA_PARTITION KCOV KCOV_ENABLE_COMPARISONS KCOV_INSTRUMENT_ALL KEYS_REQUEST_CACHE KEY_DH_OPERATIONS KEY_NOTIFICATIONS KSM KVM KVM_AMD KVM_ASYNC_PF KVM_COMPAT KVM_GENERIC_DIRTYLOG_READ_PROTECT KVM_GENERIC_HARDWARE_ENABLING KVM_MMIO KVM_PROVE_MMU KVM_VFIO KVM_XEN KVM_XFER_TO_GUEST_WORK L2TP L2TP_ETH L2TP_IP L2TP_V3 LAPB LAPBETHER LDM_PARTITION LEDS_TRIGGER_AUDIO LEGACY_PTYS LIBCRC32C LIBNVDIMM LINEAR_RANGES LLC LLC2 LOGIG940_FF LOGIRUMBLEPAD2_FF LOGO LOGO_LINUX_MONO LOGO_LINUX_VGA16 LPC_ICH LRU_GEN LRU_GEN_ENABLED LWTUNNEL LWTUNNEL_BPF LZ4HC_COMPRESS LZ4_COMPRESS MAC80211 MAC80211_HAS_RC MAC80211_HWSIM MAC80211_MESH MAC80211_RC_DEFAULT_MINSTREL MAC80211_RC_MINSTREL MACSEC MACVLAN MACVTAP MAC_PARTITION MAPPING_DIRTY_HELPERS MD_LINEAR MD_MULTIPATH MD_RAID0 MD_RAID1 MD_RAID10 MD_RAID456 MEDIA_ANALOG_TV_SUPPORT MEDIA_ATTACH MEDIA_CONTROLLER MEDIA_CONTROLLER_DVB MEDIA_CONTROLLER_REQUEST_API MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_SUPPORT_FILTER MEDIA_TUNER MEDIA_TUNER_MSI001 MEMORY_BALLOON MEMORY_HOTPLUG MEMORY_HOTPLUG_DEFAULT_ONLINE MEMORY_ISOLATION MEMREGION MEMSTICK MEMSTICK_REALTEK_USB MEM_SOFT_DIRTY MFD_CORE MFD_SYSCON MHI_BUS MHI_WWAN_CTRL MHP_MEMMAP_ON_MEMORY MICROCHIP_PHY MINIX_FS MINIX_SUBPARTITION MISC_RTSX MISC_RTSX_USB MISDN MISDN_DSP MISDN_HFCUSB MISDN_L1OIP MKISS MLX4_CORE MLX4_INFINIBAND MMC MMC_REALTEK_USB MMC_USHC MMC_VUB300 MMU_NOTIFIER MODULE_SRCVERSION_ALL MODVERSIONS MOST MOUSE_APPLETOUCH MOUSE_BCM5974 MOUSE_PS2 MOUSE_PS2_ALPS MOUSE_PS2_BYD MOUSE_PS2_CYPRESS MOUSE_PS2_FOCALTECH MOUSE_PS2_LIFEBOOK MOUSE_PS2_LOGIPS2PP MOUSE_PS2_SMBUS MOUSE_PS2_SYNAPTICS MOUSE_PS2_SYNAPTICS_SMBUS MOUSE_PS2_TRACKPOINT MOUSE_SYNAPTICS_USB MPLS MPLS_IPTUNNEL MPLS_ROUTING MPTCP MPTCP_IPV6 MRP MTD MTD_BLKDEVS MTD_BLOCK MTD_BLOCK2MTD MTD_CFI_I1 MTD_CFI_I2 MTD_MAP_BANK_WIDTH_1 MTD_MAP_BANK_WIDTH_2 MTD_MAP_BANK_WIDTH_4 MTD_MTDRAM MTD_PHRAM MTD_SLRAM MUSB_PIO_ONLY ND_BTT ND_CLAIM ND_PFN NETDEVSIM NETFILTER_ADVANCED NETFILTER_BPF_LINK NETFILTER_FAMILY_ARP NETFILTER_FAMILY_BRIDGE NETFILTER_NETLINK_ACCT NETFILTER_NETLINK_GLUE_CT NETFILTER_NETLINK_OSF NETFILTER_NETLINK_QUEUE NETFILTER_SYNPROXY NETFILTER_XTABLES_COMPAT NETFILTER_XT_CONNMARK NETFILTER_XT_MATCH_BPF NETFILTER_XT_MATCH_CGROUP NETFILTER_XT_MATCH_CLUSTER NETFILTER_XT_MATCH_COMMENT NETFILTER_XT_MATCH_CONNBYTES NETFILTER_XT_MATCH_CONNLABEL NETFILTER_XT_MATCH_CONNLIMIT NETFILTER_XT_MATCH_CONNMARK NETFILTER_XT_MATCH_CPU NETFILTER_XT_MATCH_DCCP NETFILTER_XT_MATCH_DEVGROUP NETFILTER_XT_MATCH_DSCP NETFILTER_XT_MATCH_ECN NETFILTER_XT_MATCH_ESP NETFILTER_XT_MATCH_HASHLIMIT NETFILTER_XT_MATCH_HELPER NETFILTER_XT_MATCH_HL NETFILTER_XT_MATCH_IPCOMP NETFILTER_XT_MATCH_IPRANGE NETFILTER_XT_MATCH_IPVS NETFILTER_XT_MATCH_L2TP NETFILTER_XT_MATCH_LENGTH NETFILTER_XT_MATCH_LIMIT NETFILTER_XT_MATCH_MAC NETFILTER_XT_MATCH_MARK NETFILTER_XT_MATCH_MULTIPORT NETFILTER_XT_MATCH_NFACCT NETFILTER_XT_MATCH_OSF NETFILTER_XT_MATCH_OWNER NETFILTER_XT_MATCH_PHYSDEV NETFILTER_XT_MATCH_PKTTYPE NETFILTER_XT_MATCH_QUOTA NETFILTER_XT_MATCH_RATEEST NETFILTER_XT_MATCH_REALM NETFILTER_XT_MATCH_RECENT NETFILTER_XT_MATCH_SCTP NETFILTER_XT_MATCH_SOCKET NETFILTER_XT_MATCH_STATISTIC NETFILTER_XT_MATCH_STRING NETFILTER_XT_MATCH_TCPMSS NETFILTER_XT_MATCH_TIME NETFILTER_XT_MATCH_U32 NETFILTER_XT_SET NETFILTER_XT_TARGET_AUDIT NETFILTER_XT_TARGET_CHECKSUM NETFILTER_XT_TARGET_CLASSIFY NETFILTER_XT_TARGET_CONNMARK NETFILTER_XT_TARGET_CT NETFILTER_XT_TARGET_DSCP NETFILTER_XT_TARGET_HL NETFILTER_XT_TARGET_HMARK NETFILTER_XT_TARGET_IDLETIMER NETFILTER_XT_TARGET_LED NETFILTER_XT_TARGET_MARK NETFILTER_XT_TARGET_NETMAP NETFILTER_XT_TARGET_NFQUEUE NETFILTER_XT_TARGET_NOTRACK NETFILTER_XT_TARGET_RATEEST NETFILTER_XT_TARGET_REDIRECT NETFILTER_XT_TARGET_TCPOPTSTRIP NETFILTER_XT_TARGET_TEE NETFILTER_XT_TARGET_TPROXY NETFILTER_XT_TARGET_TRACE NETLABEL NETLINK_DIAG NETROM NET_9P_RDMA NET_ACT_BPF NET_ACT_CONNMARK NET_ACT_CSUM NET_ACT_CT NET_ACT_CTINFO NET_ACT_GATE NET_ACT_IFE NET_ACT_IPT NET_ACT_MPLS NET_ACT_NAT NET_ACT_PEDIT NET_ACT_POLICE NET_ACT_SAMPLE NET_ACT_SIMP NET_ACT_SKBEDIT NET_ACT_SKBMOD NET_ACT_TUNNEL_KEY NET_ACT_VLAN NET_CLS_BASIC NET_CLS_BPF NET_CLS_FLOW NET_CLS_FLOWER NET_CLS_FW NET_CLS_MATCHALL NET_CLS_ROUTE4 NET_DEVLINK NET_DROP_MONITOR NET_DSA NET_DSA_TAG_BRCM NET_DSA_TAG_BRCM_COMMON NET_DSA_TAG_BRCM_PREPEND NET_DSA_TAG_MTK NET_DSA_TAG_QCA NET_DSA_TAG_RTL4_A NET_EMATCH_CANID NET_EMATCH_CMP NET_EMATCH_IPSET NET_EMATCH_IPT NET_EMATCH_META NET_EMATCH_NBYTE NET_EMATCH_TEXT NET_EMATCH_U32 NET_FC NET_FOU NET_FOU_IP_TUNNELS NET_IFE NET_IFE_SKBMARK NET_IFE_SKBPRIO NET_IFE_SKBTCINDEX NET_IPGRE NET_IPGRE_BROADCAST NET_IPGRE_DEMUX NET_IPIP NET_IPVTI NET_KEY NET_KEY_MIGRATE NET_L3_MASTER_DEV NET_MPLS_GSO NET_NCSI NET_NSH NET_REDIRECT NET_SCH_CAKE NET_SCH_CBS NET_SCH_CHOKE NET_SCH_CODEL NET_SCH_DRR NET_SCH_ETF NET_SCH_ETS NET_SCH_FQ NET_SCH_FQ_CODEL NET_SCH_FQ_PIE NET_SCH_GRED NET_SCH_HFSC NET_SCH_HHF NET_SCH_HTB NET_SCH_INGRESS NET_SCH_MQPRIO NET_SCH_MQPRIO_LIB NET_SCH_MULTIQ NET_SCH_NETEM NET_SCH_PIE NET_SCH_PLUG NET_SCH_PRIO NET_SCH_QFQ NET_SCH_RED NET_SCH_SFB NET_SCH_SFQ NET_SCH_SKBPRIO NET_SCH_TAPRIO NET_SCH_TBF NET_SCH_TEQL NET_SOCK_MSG NET_SWITCHDEV NET_TC_SKB_EXT NET_TEAM NET_TEAM_MODE_ACTIVEBACKUP NET_TEAM_MODE_BROADCAST NET_TEAM_MODE_LOADBALANCE NET_TEAM_MODE_RANDOM NET_TEAM_MODE_ROUNDROBIN NET_UDP_TUNNEL NET_VRF NFC NFC_DIGITAL NFC_FDP NFC_HCI NFC_MRVL NFC_MRVL_USB NFC_NCI NFC_NCI_UART NFC_PN533 NFC_PN533_USB NFC_PORT100 NFC_SHDLC NFC_SIM NFC_VIRTUAL_NCI NFSD NFSD_BLOCKLAYOUT NFSD_FLEXFILELAYOUT NFSD_PNFS NFSD_SCSILAYOUT NFSD_V3_ACL NFSD_V4 NFSD_V4_2_INTER_SSC NFSD_V4_SECURITY_LABEL NFS_FSCACHE NFS_V4_1 NFS_V4_2 NFS_V4_2_READ_PLUS NFS_V4_2_SSC_HELPER NFS_V4_SECURITY_LABEL NFT_BRIDGE_META NFT_BRIDGE_REJECT NFT_COMPAT NFT_CONNLIMIT NFT_CT NFT_DUP_IPV4 NFT_DUP_IPV6 NFT_DUP_NETDEV NFT_FIB NFT_FIB_INET NFT_FIB_IPV4 NFT_FIB_IPV6 NFT_FIB_NETDEV NFT_FLOW_OFFLOAD NFT_HASH NFT_LIMIT NFT_LOG NFT_MASQ NFT_NAT NFT_NUMGEN NFT_OSF NFT_QUEUE NFT_QUOTA NFT_REDIR NFT_REJECT NFT_REJECT_INET NFT_REJECT_IPV4 NFT_REJECT_IPV6 NFT_REJECT_NETDEV NFT_SOCKET NFT_SYNPROXY NFT_TPROXY NFT_TUNNEL NFT_XFRM NF_CONNTRACK_AMANDA NF_CONNTRACK_BRIDGE NF_CONNTRACK_BROADCAST NF_CONNTRACK_EVENTS NF_CONNTRACK_H323 NF_CONNTRACK_LABELS NF_CONNTRACK_MARK NF_CONNTRACK_NETBIOS_NS NF_CONNTRACK_OVS NF_CONNTRACK_PPTP NF_CONNTRACK_SANE NF_CONNTRACK_SNMP NF_CONNTRACK_TFTP NF_CONNTRACK_TIMEOUT NF_CONNTRACK_TIMESTAMP NF_CONNTRACK_ZONES NF_CT_NETLINK_HELPER NF_CT_NETLINK_TIMEOUT NF_CT_PROTO_DCCP NF_CT_PROTO_GRE NF_CT_PROTO_SCTP NF_CT_PROTO_UDPLITE NF_DUP_IPV4 NF_DUP_IPV6 NF_DUP_NETDEV NF_FLOW_TABLE NF_FLOW_TABLE_INET NF_NAT_AMANDA NF_NAT_H323 NF_NAT_OVS NF_NAT_PPTP NF_NAT_REDIRECT NF_NAT_SNMP_BASIC NF_NAT_TFTP NF_TABLES NF_TABLES_BRIDGE NF_TABLES_INET NF_TABLES_IPV4 NF_TABLES_IPV6 NF_TABLES_NETDEV PARTITION_ADVANCED PSAMPLE RC_CORE RC_DEVICES RFKILL SPI USB_GADGET USB_MUSB_HDRC VIDEO_DEV WAN WATCH_QUEUE WIRELESS WLAN WWAN X25 X86_X32_ABI] disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed picked [v6.6 v6.5 v6.4 v6.2 v6.0 v5.18 v5.16 v5.14 v5.11 v5.8 v5.5 v5.2 v4.20 v4.19] out of 29 release tags testing release v6.6 testing commit ffc253263a1375a65fa6c9f62a893e9767fbebfa gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 10e4fa47b8cd11cbcfc0efcf62fbec37ccc4fc6cb2bce7bb8530dddc4cc77a5d run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in do_idle run #2: crashed: INFO: rcu detected stall in do_idle run #3: crashed: INFO: rcu detected stall in do_idle run #4: crashed: INFO: rcu detected stall in do_idle run #5: crashed: INFO: rcu detected stall in do_idle run #6: crashed: INFO: rcu detected stall in do_idle run #7: crashed: INFO: rcu detected stall in do_idle run #8: crashed: INFO: rcu detected stall in do_idle run #9: crashed: BUG: soft lockup in smp_call_function representative crash: INFO: rcu detected stall in do_idle, types: [HANG] testing release v6.5 testing commit 2dde18cd1d8fac735875f2e4987f11817cc0bc2c gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e414b38fe51d4b51d3b917e2e490d90c3b59eaeedb827e066284a9fef01f244b run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in do_idle run #2: crashed: INFO: rcu detected stall in do_idle run #3: crashed: INFO: rcu detected stall in do_idle run #4: crashed: INFO: rcu detected stall in do_idle run #5: crashed: INFO: rcu detected stall in do_idle run #6: crashed: INFO: rcu detected stall in do_idle run #7: crashed: INFO: rcu detected stall in gc_worker run #8: crashed: INFO: rcu detected stall in do_idle run #9: crashed: BUG: soft lockup in smp_call_function representative crash: INFO: rcu detected stall in do_idle, types: [HANG] testing release v6.4 testing commit 6995e2de6891c724bfeb2db33d7b87775f913ad1 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d21ea54d6504464c4f7f9d56707fa2a005e72a7c69793345b9a59f8f021bc158 run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in smp_call_function run #2: crashed: INFO: rcu detected stall in do_idle run #3: crashed: INFO: rcu detected stall in smp_call_function run #4: crashed: INFO: rcu detected stall in smp_call_function run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in do_idle run #7: crashed: no output from test machine run #8: crashed: no output from test machine run #9: crashed: no output from test machine representative crash: INFO: rcu detected stall in do_idle, types: [HANG UNKNOWN] testing release v6.2 testing commit c9c3395d5e3dcc6daee66c6908354d47bf98cb0c gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 260a6ceaaa0be99657904caf4473d8e3de87aa80a7689bab4b8506d4f481bf62 run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in smp_call_function run #2: crashed: BUG: soft lockup in smp_call_function run #3: crashed: INFO: rcu detected stall in do_idle run #4: crashed: no output from test machine run #5: crashed: no output from test machine run #6: crashed: no output from test machine run #7: crashed: no output from test machine run #8: crashed: no output from test machine run #9: crashed: no output from test machine representative crash: no output from test machine, types: [UNKNOWN] testing release v6.0 testing commit 4fe89d07dcc2804c8b562f6c7896a45643d34b2f gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0738510d4bb949d02e7eebed6a10f44c40cb81f865836971e60276729b65ffd1 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in smp_call_function run #2: crashed: INFO: rcu detected stall in do_idle run #3: crashed: INFO: rcu detected stall in do_idle run #4: crashed: INFO: rcu detected stall in net_tx_action run #5: crashed: INFO: rcu detected stall in do_idle run #6: crashed: INFO: rcu detected stall in smp_call_function run #7: crashed: INFO: rcu detected stall in smp_call_function run #8: crashed: no output from test machine run #9: crashed: no output from test machine representative crash: INFO: rcu detected stall in corrupted, types: [HANG] testing release v5.18 testing commit 4b0986a3613c92f4ec1bdc7f60ec66fea135991f gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5184539c6af1e48b05272c9873cd505caa21aea3990dc46b28b449ec3e314ece run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in tc_modify_qdisc run #2: crashed: INFO: rcu detected stall in net_tx_action run #3: crashed: INFO: rcu detected stall in do_idle run #4: crashed: INFO: rcu detected stall in do_idle run #5: crashed: BUG: soft lockup in tc_modify_qdisc run #6: crashed: no output from test machine run #7: crashed: no output from test machine run #8: crashed: no output from test machine run #9: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1859692118" "root@10.128.10.30:./syz-executor1859692118"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.30, user root, command sftp OpenSSH_9.2p1 Debian-2, OpenSSL 3.0.9 30 May 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.30 [10.128.10.30] port 22. debug1: connect to address 10.128.10.30 port 22: Connection timed out ssh: connect to host 10.128.10.30 port 22: Connection timed out scp: Connection closed representative crash: INFO: rcu detected stall in do_idle, types: [HANG UNKNOWN] testing release v5.16 testing commit df0cc57e057f18e44dac8e6c18aba47ab53202f9 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 77756c2670a6af3a4f960a40a3bed518debe770645af71e5e838228d18fee42c run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in do_idle run #2: crashed: INFO: rcu detected stall in net_tx_action run #3: crashed: INFO: rcu detected stall in do_idle run #4: crashed: INFO: rcu detected stall in tc_modify_qdisc run #5: crashed: INFO: rcu detected stall in smp_call_function run #6: crashed: INFO: rcu detected stall in do_idle run #7: crashed: INFO: rcu detected stall in wb_workfn run #8: crashed: INFO: rcu detected stall in do_idle run #9: crashed: BUG: soft lockup in smp_call_function representative crash: INFO: rcu detected stall in do_idle, types: [HANG] testing release v5.14 testing commit 7d2a07b769330c34b4deabeed939325c77a7ec2f gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 20694c9502aec1be370483b3e33dcbef3bd3d6e06a51af807a5c39aa3bd4b224 run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in do_idle run #2: crashed: BUG: soft lockup in tc_modify_qdisc run #3: crashed: INFO: rcu detected stall in smp_call_function run #4: crashed: BUG: soft lockup in smp_call_function run #5: crashed: BUG: soft lockup in net_tx_action run #6: crashed: INFO: rcu detected stall in do_idle run #7: crashed: BUG: soft lockup in smp_call_function run #8: crashed: INFO: rcu detected stall in do_idle run #9: crashed: INFO: rcu detected stall in net_tx_action representative crash: INFO: rcu detected stall in do_idle, types: [HANG] testing release v5.11 testing commit f40ddce88593482919761f74910f42f4b84c004b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c7f3e8221ebaa8a04ba08087878a4acfbdc6040725be744dbec5ca05f788688a run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: BUG: soft lockup in tc_modify_qdisc run #2: crashed: BUG: soft lockup in net_tx_action run #3: crashed: INFO: rcu detected stall in do_idle run #4: crashed: INFO: rcu detected stall in do_idle run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: BUG: soft lockup in do_idle run #7: crashed: INFO: rcu detected stall in net_tx_action run #8: crashed: INFO: rcu detected stall in tc_modify_qdisc run #9: crashed: INFO: rcu detected stall in do_idle representative crash: INFO: rcu detected stall in do_idle, types: [HANG] testing release v5.8 testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8a211b7e884c6e2ab7c370419b55f02aaa3ea8775103de23c20174219ae86c36 all runs: OK false negative chance: 0.000 # git bisect start f40ddce88593482919761f74910f42f4b84c004b bcf876870b95592b52519ed4aafcf9d95999bc9c Bisecting: 25071 revisions left to test after this (roughly 15 steps) [4d0e9df5e43dba52d38b251e3b909df8fa1110be] lib, uaccess: add failure injection to usercopy functions testing commit 4d0e9df5e43dba52d38b251e3b909df8fa1110be gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b28b78972695e9afc5bc589edca450f114637a50527580942ee549345e304624 run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: BUG: soft lockup in do_idle run #2: crashed: BUG: soft lockup in do_idle run #3: crashed: INFO: rcu detected stall in do_idle run #4: crashed: BUG: soft lockup in do_idle run #5: crashed: BUG: soft lockup in do_idle run #6: crashed: BUG: soft lockup in do_idle run #7: crashed: no output from test machine run #8: crashed: no output from test machine run #9: crashed: no output from test machine representative crash: INFO: rcu detected stall in do_idle, types: [HANG UNKNOWN] # git bisect bad 4d0e9df5e43dba52d38b251e3b909df8fa1110be Bisecting: 11959 revisions left to test after this (roughly 14 steps) [7a6b60441f02f6e22e7c0936ef16fa3f51832a48] Merge tag 'nfsd-5.9' of git://git.linux-nfs.org/projects/cel/cel-2.6 testing commit 7a6b60441f02f6e22e7c0936ef16fa3f51832a48 gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a3b8c683ba9409bf8064b8c074eaea5eb0027ad20bf09cb6d8aa30780ebb264d all runs: OK false negative chance: 0.000 # git bisect good 7a6b60441f02f6e22e7c0936ef16fa3f51832a48 Bisecting: 5950 revisions left to test after this (roughly 13 steps) [fd5c32d80884268a381ed0e67cccef0b3d37750b] Merge tag 'media/v5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media testing commit fd5c32d80884268a381ed0e67cccef0b3d37750b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0e0d221b5551a302460e8e13336ce6cd68beaf8d42b5ae1f4b31e4bd64be7cda run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in do_idle run #2: crashed: INFO: rcu detected stall in do_idle run #3: crashed: BUG: soft lockup in do_idle run #4: crashed: BUG: soft lockup in do_idle run #5: crashed: BUG: soft lockup in do_idle run #6: crashed: BUG: soft lockup in do_idle run #7: crashed: INFO: rcu detected stall in do_idle run #8: crashed: no output from test machine run #9: crashed: no output from test machine representative crash: INFO: rcu detected stall in do_idle, types: [HANG] # git bisect bad fd5c32d80884268a381ed0e67cccef0b3d37750b Bisecting: 3002 revisions left to test after this (roughly 12 steps) [b952e974300be3184049a125e7cba112fe659017] Merge tag 'for-linus' of git://github.com/openrisc/linux testing commit b952e974300be3184049a125e7cba112fe659017 gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 171618821b2e628dbe536068447ab84b3cc7464c225fc30dabb8017b53babab4 all runs: OK false negative chance: 0.000 # git bisect good b952e974300be3184049a125e7cba112fe659017 Bisecting: 1504 revisions left to test after this (roughly 11 steps) [cc7343724eb77ce0752b1097a275f22f6fe47057] Merge tag 'x86-irq-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit cc7343724eb77ce0752b1097a275f22f6fe47057 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 818dda6c93a139a12439ae0df7fadd03dac815a8780399f48e5bb60b8e563bc0 run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in do_idle run #2: crashed: INFO: rcu detected stall in do_idle run #3: crashed: INFO: rcu detected stall in do_idle run #4: crashed: INFO: rcu detected stall in do_idle run #5: crashed: INFO: rcu detected stall in do_idle run #6: crashed: INFO: rcu detected stall in wb_workfn run #7: crashed: BUG: soft lockup in smp_call_function run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in do_idle representative crash: INFO: rcu detected stall in do_idle, types: [HANG] # git bisect bad cc7343724eb77ce0752b1097a275f22f6fe47057 Bisecting: 748 revisions left to test after this (roughly 10 steps) [472e5b056f000a778abb41f1e443de58eb259783] pipe: remove pipe_wait() and fix wakeup race with splice testing commit 472e5b056f000a778abb41f1e443de58eb259783 gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1902f1a178b935f8c1b2edd93b000548272ad28b7d9d5542799a446d1caa9e4b run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in do_idle run #2: crashed: INFO: rcu detected stall in do_idle run #3: crashed: INFO: rcu detected stall in do_idle run #4: crashed: INFO: rcu detected stall in do_idle run #5: crashed: INFO: rcu detected stall in do_idle run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in do_idle run #8: crashed: no output from test machine run #9: crashed: no output from test machine representative crash: INFO: rcu detected stall in do_idle, types: [HANG] # git bisect bad 472e5b056f000a778abb41f1e443de58eb259783 Bisecting: 373 revisions left to test after this (roughly 9 steps) [0baca070068c58b95e342881d9da4840d5cf3bd1] Merge tag 'io_uring-5.9-2020-09-22' of git://git.kernel.dk/linux-block testing commit 0baca070068c58b95e342881d9da4840d5cf3bd1 gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ede42f9ecf693d2d85072a6a3ee71277e0092059cfb1b50da3ee5148d930e604 all runs: OK false negative chance: 0.000 # git bisect good 0baca070068c58b95e342881d9da4840d5cf3bd1 Bisecting: 186 revisions left to test after this (roughly 8 steps) [7a0230759ea6795af037f3fd9526d00dc896ce19] net: dsa: seville: fix some key offsets for IP4_TCP_UDP VCAP IS2 entries testing commit 7a0230759ea6795af037f3fd9526d00dc896ce19 gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c4f24446be2f7662fbee0520efa1b63279e4504b6cb3ede9da5c1554e25ce5be run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in do_idle run #2: crashed: INFO: rcu detected stall in do_idle run #3: crashed: INFO: rcu detected stall in do_idle run #4: crashed: INFO: rcu detected stall in blk_done_softirq run #5: crashed: INFO: rcu detected stall in do_idle run #6: crashed: INFO: rcu detected stall in do_idle run #7: crashed: INFO: rcu detected stall in do_idle run #8: crashed: INFO: rcu detected stall in do_idle run #9: crashed: INFO: rcu detected stall in do_idle representative crash: INFO: rcu detected stall in do_idle, types: [HANG] # git bisect bad 7a0230759ea6795af037f3fd9526d00dc896ce19 Bisecting: 93 revisions left to test after this (roughly 7 steps) [ad7b27c9e64afce4ad69020329a3e89f6df4f382] Merge branch 'net-improve-vxlan-option-process-in-net_sched-and-lwtunnel' testing commit ad7b27c9e64afce4ad69020329a3e89f6df4f382 gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 214a410a554b72f96f32859f8b14e1206b0f96d2d475347b1c57ac46d6203af6 run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in do_idle run #2: crashed: INFO: rcu detected stall in do_idle run #3: crashed: INFO: rcu detected stall in do_idle run #4: crashed: no output from test machine run #5: crashed: no output from test machine run #6: crashed: no output from test machine run #7: crashed: INFO: rcu detected stall in do_idle run #8: crashed: INFO: rcu detected stall in do_idle run #9: crashed: no output from test machine representative crash: INFO: rcu detected stall in do_idle, types: [HANG UNKNOWN] # git bisect bad ad7b27c9e64afce4ad69020329a3e89f6df4f382 Bisecting: 46 revisions left to test after this (roughly 6 steps) [2d2fe8433796603091ac8ea235b9165ac5a85f9a] net: qed: Disable aRFS for NPAR and 100G testing commit 2d2fe8433796603091ac8ea235b9165ac5a85f9a gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e83c06c762a8d10f95eff63fa5001d17ec384b3bb11c787106c54ee341d634df all runs: OK false negative chance: 0.000 # git bisect good 2d2fe8433796603091ac8ea235b9165ac5a85f9a Bisecting: 23 revisions left to test after this (roughly 5 steps) [297e77e53eadb332d5062913447b104a772dc33b] net: DCB: Validate DCB_ATTR_DCB_BUFFER argument testing commit 297e77e53eadb332d5062913447b104a772dc33b gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8a45cf405da0585e34714ac8a85945880a47f6f73a93a7b273b44271efcf886e all runs: OK false negative chance: 0.000 # git bisect good 297e77e53eadb332d5062913447b104a772dc33b Bisecting: 11 revisions left to test after this (roughly 4 steps) [5760d9acbe9514eec68eb70821d6fa5764f57042] net: ethernet: ti: cpsw_new: fix suspend/resume testing commit 5760d9acbe9514eec68eb70821d6fa5764f57042 gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b2adb42d54e4be58e89d3dd6e6e9bfaf427601b6694330a398d658c732e3308d run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in do_idle run #2: crashed: INFO: rcu detected stall in smp_call_function run #3: crashed: no output from test machine run #4: crashed: BUG: soft lockup in do_idle run #5: crashed: no output from test machine run #6: crashed: no output from test machine run #7: crashed: no output from test machine run #8: crashed: no output from test machine run #9: crashed: no output from test machine representative crash: no output from test machine, types: [UNKNOWN] # git bisect bad 5760d9acbe9514eec68eb70821d6fa5764f57042 Bisecting: 7 revisions left to test after this (roughly 3 steps) [4406e977a4a1e997818b6d77c3218ef8d15b2abf] igc: Fix not considering the TX delay for timestamps testing commit 4406e977a4a1e997818b6d77c3218ef8d15b2abf gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e83c06c762a8d10f95eff63fa5001d17ec384b3bb11c787106c54ee341d634df all runs: OK false negative chance: 0.000 # git bisect good 4406e977a4a1e997818b6d77c3218ef8d15b2abf Bisecting: 3 revisions left to test after this (roughly 2 steps) [53467ecb6f38d7cbd86359ff1c8958b8b568dc57] Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-queue testing commit 53467ecb6f38d7cbd86359ff1c8958b8b568dc57 gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8a45cf405da0585e34714ac8a85945880a47f6f73a93a7b273b44271efcf886e all runs: OK false negative chance: 0.000 # git bisect good 53467ecb6f38d7cbd86359ff1c8958b8b568dc57 Bisecting: 1 revision left to test after this (roughly 1 step) [a1b80e0143a1b878f8e21d82fd55f3f46f0014be] hinic: fix rewaking txq after netif_tx_disable testing commit a1b80e0143a1b878f8e21d82fd55f3f46f0014be gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b2adb42d54e4be58e89d3dd6e6e9bfaf427601b6694330a398d658c732e3308d run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in do_idle run #2: crashed: INFO: rcu detected stall in do_idle run #3: crashed: no output from test machine run #4: crashed: no output from test machine run #5: crashed: no output from test machine run #6: crashed: no output from test machine run #7: crashed: no output from test machine run #8: crashed: no output from test machine run #9: crashed: no output from test machine representative crash: no output from test machine, types: [UNKNOWN] # git bisect bad a1b80e0143a1b878f8e21d82fd55f3f46f0014be Bisecting: 0 revisions left to test after this (roughly 0 steps) [b5b73b26b3ca34574124ed7ae9c5ba8391a7f176] taprio: Fix allowing too small intervals testing commit b5b73b26b3ca34574124ed7ae9c5ba8391a7f176 gcc compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b2adb42d54e4be58e89d3dd6e6e9bfaf427601b6694330a398d658c732e3308d run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in do_idle run #2: crashed: INFO: rcu detected stall in do_idle run #3: crashed: INFO: rcu detected stall in do_idle run #4: crashed: INFO: rcu detected stall in do_idle run #5: crashed: INFO: rcu detected stall in do_idle run #6: crashed: no output from test machine run #7: crashed: no output from test machine run #8: crashed: INFO: rcu detected stall in do_idle run #9: crashed: no output from test machine representative crash: INFO: rcu detected stall in do_idle, types: [HANG UNKNOWN] # git bisect bad b5b73b26b3ca34574124ed7ae9c5ba8391a7f176 b5b73b26b3ca34574124ed7ae9c5ba8391a7f176 is the first bad commit commit b5b73b26b3ca34574124ed7ae9c5ba8391a7f176 Author: Vinicius Costa Gomes Date: Wed Sep 9 17:03:11 2020 -0700 taprio: Fix allowing too small intervals It's possible that the user specifies an interval that couldn't allow any packet to be transmitted. This also avoids the issue of the hrtimer handler starving the other threads because it's running too often. The solution is to reject interval sizes that according to the current link speed wouldn't allow any packet to be transmitted. Reported-by: syzbot+8267241609ae8c23b248@syzkaller.appspotmail.com Fixes: 5a781ccbd19e ("tc: Add support for configuring the taprio scheduler") Signed-off-by: Vinicius Costa Gomes Signed-off-by: David S. Miller net/sched/sch_taprio.c | 28 +++++++++++++++++----------- 1 file changed, 17 insertions(+), 11 deletions(-) accumulated error probability: 0.00 culprit signature: b2adb42d54e4be58e89d3dd6e6e9bfaf427601b6694330a398d658c732e3308d parent signature: 8a45cf405da0585e34714ac8a85945880a47f6f73a93a7b273b44271efcf886e revisions tested: 33, total time: 7h20m25.192032814s (build: 2h23m59.96783889s, test: 4h38m24.23176287s) first bad commit: b5b73b26b3ca34574124ed7ae9c5ba8391a7f176 taprio: Fix allowing too small intervals recipients (to): ["davem@davemloft.net" "davem@davemloft.net" "jhs@mojatatu.com" "jiri@resnulli.us" "kuba@kernel.org" "netdev@vger.kernel.org" "vinicius.gomes@intel.com" "xiyou.wangcong@gmail.com"] recipients (cc): ["linux-kernel@vger.kernel.org"] crash: INFO: rcu detected stall in do_idle rcu: INFO: rcu_sched self-detected stall on CPU rcu: 1-...!: (3 ticks this GP) idle=41a/0/0x1 softirq=4738/4738 fqs=0 (t=11488 jiffies g=2673 q=226) rcu: rcu_sched kthread starved for 11488 jiffies! g2673 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 rcu: Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_sched state:I stack:14696 pid: 10 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0x2cd/0x740 kernel/sched/core.c:4527 schedule+0x3b/0xa0 kernel/sched/core.c:4602 schedule_timeout+0x2b2/0x410 kernel/time/timer.c:1879 rcu_gp_fqs_loop kernel/rcu/tree.c:1888 [inline] rcu_gp_kthread+0x460/0x980 kernel/rcu/tree.c:2058 kthread+0x149/0x170 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.9.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x97/0xce lib/dump_stack.c:118 nmi_cpu_backtrace.cold.8+0x18/0x64 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x140/0x145 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x89/0xb5 kernel/rcu/tree_stall.h:318 print_cpu_stall kernel/rcu/tree_stall.h:551 [inline] check_cpu_stall kernel/rcu/tree_stall.h:625 [inline] rcu_pending kernel/rcu/tree.c:3637 [inline] rcu_sched_clock_irq.cold.90+0x101/0x358 kernel/rcu/tree.c:2519 update_process_times+0x25/0x70 kernel/time/timer.c:1710 tick_sched_handle.isra.21+0x47/0xa0 kernel/time/tick-sched.c:176 tick_sched_timer+0x98/0xb0 kernel/time/tick-sched.c:1328 __run_hrtimer kernel/time/hrtimer.c:1524 [inline] __hrtimer_run_queues+0x1b0/0x480 kernel/time/hrtimer.c:1588 hrtimer_interrupt+0x11b/0x290 kernel/time/hrtimer.c:1650 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] __sysvec_apic_timer_interrupt+0x63/0x120 arch/x86/kernel/apic/apic.c:1097 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] sysvec_apic_timer_interrupt+0x6d/0x80 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:49 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:89 [inline] RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:112 [inline] RIP: 0010:acpi_safe_halt+0x45/0x50 drivers/acpi/processor_idle.c:108 Code: 48 89 de e8 bd 28 b9 fe 48 85 db 75 1e e8 73 27 b9 fe e9 0c 00 00 00 e8 69 27 b9 fe 0f 00 2d 3c 3c 62 00 e8 5d 27 b9 fe fb f4 5b e9 54 27 b9 fe 0f 1f 40 00 55 48 89 fd 53 e8 46 27 b9 fe 0f RSP: 0018:ffffc90000073de0 EFLAGS: 00000293 RAX: ffff888236db3080 RBX: 0000000000000000 RCX: ffffffff826a0f93 RDX: 0000000000000000 RSI: ffffffff826a0fb3 RDI: 0000000000000007 RBP: ffff888234afd064 R08: ffff888236db3080 R09: ffff888236db3920 R10: 0000000000000001 R11: 0000000000019000 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 000000007fffffff acpi_idle_do_entry+0x8d/0xa0 drivers/acpi/processor_idle.c:524 acpi_idle_enter+0x150/0x460 drivers/acpi/processor_idle.c:650 cpuidle_enter_state+0xe8/0x680 drivers/cpuidle/cpuidle.c:243 cpuidle_enter+0x29/0x40 drivers/cpuidle/cpuidle.c:355 call_cpuidle kernel/sched/idle.c:132 [inline] cpuidle_idle_call kernel/sched/idle.c:213 [inline] do_idle+0x238/0x280 kernel/sched/idle.c:273 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:369 start_secondary+0xf8/0x130 arch/x86/kernel/smpboot.c:266 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243