ci starts bisection 2023-09-29 11:05:15.005794519 +0000 UTC m=+29844.087997056 bisecting fixing commit since 8a519a572598b7c0c07b02f69bf5b4e8dd4b2d7d building syzkaller on 39990d513277ce9372a4cc89bdac23d9fc30b056 ensuring issue is reproducible on original commit 8a519a572598b7c0c07b02f69bf5b4e8dd4b2d7d testing commit 8a519a572598b7c0c07b02f69bf5b4e8dd4b2d7d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a475d4564a5808ed2aa29bc5187b46bfb11f8eb487c9312a4118fc77b7c7f150 run #0: crashed: INFO: rcu detected stall in sys_exit_group run #1: crashed: INFO: rcu detected stall in tc_modify_qdisc run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in net_tx_action run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in net_tx_action run #6: crashed: INFO: rcu detected stall in net_tx_action run #7: crashed: INFO: rcu detected stall in net_tx_action run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in net_tx_action run #10: crashed: INFO: rcu detected stall in tc_modify_qdisc run #11: crashed: INFO: rcu detected stall in wg_packet_handshake_send_worker run #12: crashed: INFO: rcu detected stall in sys_clock_nanosleep run #13: crashed: INFO: rcu detected stall in do_idle run #14: crashed: INFO: rcu detected stall in tc_modify_qdisc run #15: crashed: INFO: rcu detected stall in net_tx_action run #16: crashed: INFO: rcu detected stall in clone run #17: crashed: INFO: rcu detected stall in net_tx_action run #18: OK run #19: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in sys_exit_group, 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 8a519a572598b7c0c07b02f69bf5b4e8dd4b2d7d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a43fa4c14a2ce041183c12e225f89f5f0f22315659f0c7912e9707725f20d604 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in netlink_sendmsg run #2: crashed: INFO: rcu detected stall in gc_worker run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: INFO: rcu detected stall in corrupted, types: [HANG] kconfig minimization: base=3883 full=7652 leaves diff=1999 split chunks (needed=false): <1999> split chunk #0 of len 1999 into 5 parts testing without sub-chunk 1/5 testing commit 8a519a572598b7c0c07b02f69bf5b4e8dd4b2d7d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 91eaf613b24315c14c2a2ab428131d68f82f65c79d1ee174e6e73197a5def218 run #0: crashed: INFO: rcu detected stall in process_one_work run #1: crashed: INFO: rcu detected stall in newfstatat run #2: crashed: INFO: rcu detected stall in net_tx_action run #3: crashed: INFO: rcu detected stall in sys_clock_nanosleep run #4: crashed: INFO: rcu detected stall in net_tx_action run #5: crashed: INFO: rcu detected stall in sys_unlinkat run #6: crashed: INFO: rcu detected stall in tc_modify_qdisc 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 sys_clock_nanosleep run #10: crashed: INFO: rcu detected stall in tc_modify_qdisc run #11: crashed: INFO: rcu detected stall in tc_modify_qdisc run #12: crashed: INFO: rcu detected stall in toggle_allocation_gate run #13: crashed: INFO: rcu detected stall in cfg80211_wiphy_work run #14: crashed: INFO: rcu detected stall in sys_clock_nanosleep run #15: crashed: INFO: rcu detected stall in newfstatat run #16: crashed: INFO: rcu detected stall in tc_modify_qdisc run #17: crashed: INFO: rcu detected stall in sys_openat run #18: crashed: INFO: rcu detected stall in sys_symlinkat run #19: crashed: INFO: rcu detected stall in net_tx_action representative crash: INFO: rcu detected stall in process_one_work, types: [HANG] the chunk can be dropped testing without sub-chunk 2/5 testing commit 8a519a572598b7c0c07b02f69bf5b4e8dd4b2d7d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d998c94d9a11ea85570c906d6084dc49834659aeaed7a79447e684ffd4bbb62d run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in clone run #2: crashed: INFO: rcu detected stall in net_tx_action run #3: crashed: INFO: rcu detected stall in sys_clock_nanosleep run #4: crashed: INFO: rcu detected stall in net_tx_action run #5: crashed: INFO: rcu detected stall in net_tx_action run #6: crashed: INFO: rcu detected stall in nsim_dev_trap_report_work run #7: crashed: INFO: rcu detected stall in tc_modify_qdisc run #8: crashed: INFO: rcu detected stall in sys_exit_group run #9: crashed: INFO: rcu detected stall in mas_preallocate run #10: crashed: INFO: rcu detected stall in corrupted run #11: crashed: INFO: rcu detected stall in do_vmi_munmap run #12: crashed: INFO: rcu detected stall in call_usermodehelper_exec_async run #13: crashed: INFO: rcu detected stall in sys_socket run #14: crashed: INFO: rcu detected stall in sys_rename run #15: crashed: INFO: rcu detected stall in corrupted run #16: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #17: OK run #18: crashed: INFO: rcu detected stall in process_one_work run #19: crashed: INFO: rcu detected stall in net_tx_action representative crash: INFO: rcu detected stall in corrupted, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 testing commit 8a519a572598b7c0c07b02f69bf5b4e8dd4b2d7d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 55012bc798597e0df218871c4490825b18a34a4546b2add1fafe26eeaaea3ef7 all runs: OK false negative chance: 0.000 testing without sub-chunk 4/5 testing commit 8a519a572598b7c0c07b02f69bf5b4e8dd4b2d7d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ef6f62da617e0e5b412f7e2a4bc958b5613677364ada0bd175f9f34110a38e3e run #0: crashed: INFO: rcu detected stall in net_tx_action run #1: crashed: INFO: rcu detected stall in sys_unlink run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in sys_execve run #4: crashed: INFO: rcu detected stall in net_tx_action run #5: crashed: INFO: rcu detected stall in netlink_sendmsg run #6: crashed: INFO: rcu detected stall in validate_mm run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in tc_modify_qdisc run #9: crashed: INFO: rcu detected stall in net_tx_action run #10: crashed: INFO: rcu detected stall in net_tx_action run #11: crashed: INFO: rcu detected stall in sys_brk run #12: crashed: INFO: rcu detected stall in sys_symlinkat run #13: crashed: INFO: rcu detected stall in corrupted run #14: crashed: INFO: rcu detected stall in net_tx_action run #15: crashed: INFO: rcu detected stall in wake_up_q run #16: crashed: INFO: rcu detected stall in mld_dad_work run #17: OK run #18: crashed: INFO: rcu detected stall in net_tx_action run #19: OK representative crash: INFO: rcu detected stall in net_tx_action, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 testing commit 8a519a572598b7c0c07b02f69bf5b4e8dd4b2d7d gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 39205f7a6a4a7ec6384f002da41b3c5af61344a55fd2748834199def5ec3efbc run #0: crashed: INFO: rcu detected stall in net_tx_action run #1: crashed: INFO: rcu detected stall in newfstatat run #2: crashed: INFO: rcu detected stall in net_tx_action run #3: crashed: INFO: rcu detected stall in net_tx_action run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in net_tx_action run #6: crashed: INFO: rcu detected stall in net_tx_action run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in kernfs_fop_open run #9: crashed: INFO: rcu detected stall in tc_modify_qdisc run #10: crashed: INFO: rcu detected stall in sys_mprotect run #11: crashed: INFO: rcu detected stall in corrupted run #12: crashed: INFO: rcu detected stall in tc_modify_qdisc run #13: crashed: INFO: rcu detected stall in sys_getsockopt run #14: crashed: INFO: rcu detected stall in corrupted run #15: crashed: INFO: rcu detected stall in nsim_dev_trap_report_work run #16: crashed: INFO: rcu detected stall in mas_preallocate run #17: crashed: INFO: rcu detected stall in gc_worker run #18: crashed: INFO: rcu detected stall in cfg80211_wiphy_work run #19: OK representative crash: INFO: rcu detected stall in net_tx_action, types: [HANG] the chunk can be dropped minimized to 400 configs; suspects: [AX25 BRIDGE BRIDGE_NETFILTER CAN CFG80211 CHECKPOINT_RESTORE DVB_CORE FB 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_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_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 LOCALVERSION_AUTO 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_DEBUGFS 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_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] testing current HEAD c070e51db5e2a98d3aef7c324b15209ba47f3dca testing commit c070e51db5e2a98d3aef7c324b15209ba47f3dca gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 692f657b4f7127b73e63632e40555a17dbe7d22f4dba2e4be326074a73d2ea25 all runs: OK false negative chance: 0.000 # git bisect start c070e51db5e2a98d3aef7c324b15209ba47f3dca 8a519a572598b7c0c07b02f69bf5b4e8dd4b2d7d Bisecting: 7300 revisions left to test after this (roughly 13 steps) [461f35f014466c4e26dca6be0f431f57297df3f2] Merge tag 'drm-next-2023-08-30' of git://anongit.freedesktop.org/drm/drm determine whether the revision contains the guilty commit revision 8a519a572598b7c0c07b02f69bf5b4e8dd4b2d7d crashed and is reachable testing commit 461f35f014466c4e26dca6be0f431f57297df3f2 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2e9ef98f8e8f12f98403084b6628c9c543aecbe1765ac7017935abbbcd3b803f all runs: OK false negative chance: 0.000 # git bisect bad 461f35f014466c4e26dca6be0f431f57297df3f2 Bisecting: 4415 revisions left to test after this (roughly 12 steps) [68cf01760bc0891074e813b9bb06d2696cac1c01] Merge tag 'v6.6-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 determine whether the revision contains the guilty commit revision 8a519a572598b7c0c07b02f69bf5b4e8dd4b2d7d crashed and is reachable testing commit 68cf01760bc0891074e813b9bb06d2696cac1c01 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 19afb98912f125b0b01a3658a63c58f5fe9f4057f6d457787802a47cc2b03ec3 all runs: OK false negative chance: 0.000 # git bisect bad 68cf01760bc0891074e813b9bb06d2696cac1c01 Bisecting: 1317 revisions left to test after this (roughly 10 steps) [1a7c611546e552193180941ecf6b191e659db979] Merge tag 'perf-core-2023-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip determine whether the revision contains the guilty commit revision 8a519a572598b7c0c07b02f69bf5b4e8dd4b2d7d crashed and is reachable testing commit 1a7c611546e552193180941ecf6b191e659db979 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 62c44f3b7c3072bcfdc0a94b198ace60012d6c08e1da34ea7886b2519a5a2bc5 all runs: OK false negative chance: 0.000 # git bisect bad 1a7c611546e552193180941ecf6b191e659db979 Bisecting: 642 revisions left to test after this (roughly 9 steps) [85eb043618bb17124050197d71c453d4a1f556e5] Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi determine whether the revision contains the guilty commit revision 8a519a572598b7c0c07b02f69bf5b4e8dd4b2d7d crashed and is reachable testing commit 85eb043618bb17124050197d71c453d4a1f556e5 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bfb338d00db5e60cb56eac61793f2b0074fb8fad3977762eec2958a7b58dd6d8 all runs: OK false negative chance: 0.000 # git bisect bad 85eb043618bb17124050197d71c453d4a1f556e5 Bisecting: 323 revisions left to test after this (roughly 8 steps) [db1a6ad77c180efc7242d7204b9a0c72c8a5a1bb] net: sfp: handle 100G/25G active optical cables in sfp_parse_support determine whether the revision contains the guilty commit revision 8a519a572598b7c0c07b02f69bf5b4e8dd4b2d7d crashed and is reachable testing commit db1a6ad77c180efc7242d7204b9a0c72c8a5a1bb gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 88ec5a43b484b2308e33c83fd4a28939c67b8627590d1465ed6096f29ee5f9aa run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in net_tx_action run #2: crashed: INFO: rcu detected stall in tc_modify_qdisc run #3: crashed: INFO: rcu detected stall in tc_modify_qdisc run #4: crashed: INFO: rcu detected stall in net_tx_action run #5: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #6: crashed: INFO: rcu detected stall in do_mmap run #7: crashed: INFO: rcu detected stall in vm_area_alloc run #8: crashed: INFO: rcu detected stall in sys_openat run #9: crashed: INFO: rcu detected stall in sys_unlink run #10: crashed: INFO: rcu detected stall in mld_ifc_work run #11: crashed: INFO: rcu detected stall in newfstatat run #12: crashed: INFO: rcu detected stall in gc_worker run #13: crashed: INFO: rcu detected stall in newfstatat run #14: crashed: INFO: rcu detected stall in sys_futex run #15: OK run #16: crashed: INFO: rcu detected stall in corrupted run #17: crashed: INFO: rcu detected stall in net_tx_action run #18: OK run #19: OK representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good db1a6ad77c180efc7242d7204b9a0c72c8a5a1bb Bisecting: 161 revisions left to test after this (roughly 7 steps) [8879515e1219857df1f142e23840b91a37cbde88] LoongArch: Add identifier names to arguments of die() declaration determine whether the revision contains the guilty commit revision 8a519a572598b7c0c07b02f69bf5b4e8dd4b2d7d crashed and is reachable testing commit 8879515e1219857df1f142e23840b91a37cbde88 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f0f0d10554d703ecf2c16ae83b2961e4bd2d85d3e682aa24e53677ca634d4585 run #0: crashed: INFO: rcu detected stall in net_tx_action run #1: crashed: INFO: rcu detected stall in tc_modify_qdisc run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in net_tx_action run #4: crashed: INFO: rcu detected stall in net_tx_action run #5: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #6: crashed: INFO: rcu detected stall in net_tx_action run #7: crashed: INFO: rcu detected stall in tc_modify_qdisc run #8: crashed: INFO: rcu detected stall in net_tx_action run #9: crashed: INFO: rcu detected stall in sys_readlink run #10: crashed: INFO: rcu detected stall in net_tx_action run #11: crashed: INFO: rcu detected stall in worker_thread run #12: crashed: INFO: rcu detected stall in security_file_open run #13: crashed: INFO: rcu detected stall in corrupted run #14: crashed: INFO: rcu detected stall in corrupted run #15: crashed: INFO: rcu detected stall in vm_get_page_prot run #16: crashed: INFO: rcu detected stall in net_tx_action run #17: crashed: INFO: rcu detected stall in gc_worker run #18: OK run #19: OK representative crash: INFO: rcu detected stall in net_tx_action, types: [HANG] # git bisect good 8879515e1219857df1f142e23840b91a37cbde88 Bisecting: 77 revisions left to test after this (roughly 6 steps) [4f9e7fabf8643003afefc172e62dd276686f016e] Merge tag 'trace-v6.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace determine whether the revision contains the guilty commit revision db1a6ad77c180efc7242d7204b9a0c72c8a5a1bb crashed and is reachable testing commit 4f9e7fabf8643003afefc172e62dd276686f016e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dd8df0ed17a70c5576eae3cec5663e2be9a0474d744a77afb609934dded93f61 all runs: OK false negative chance: 0.000 # git bisect bad 4f9e7fabf8643003afefc172e62dd276686f016e Bisecting: 41 revisions left to test after this (roughly 5 steps) [8938fc0c7e16e0868a1083deadc91b95b72ca0da] Merge tag 'nf-23-08-23' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/netfilter/nf determine whether the revision contains the guilty commit revision db1a6ad77c180efc7242d7204b9a0c72c8a5a1bb crashed and is reachable testing commit 8938fc0c7e16e0868a1083deadc91b95b72ca0da gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7beb0026b115f5164485aef541165d82a028001a9d4ebc8e7e4f2d7ba4879048 all runs: OK false negative chance: 0.000 # git bisect bad 8938fc0c7e16e0868a1083deadc91b95b72ca0da Bisecting: 21 revisions left to test after this (roughly 4 steps) [c8777fa6f3c6e0cfa4ef7e7028df83d35a586671] Merge branch 'can-fixes-for-6-5-rc7' determine whether the revision contains the guilty commit revision db1a6ad77c180efc7242d7204b9a0c72c8a5a1bb crashed and is reachable testing commit c8777fa6f3c6e0cfa4ef7e7028df83d35a586671 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 833e41e5cab8aac238e55f5c8990d3cf346e6c7ba20e9733b0b73158b992e69b run #0: crashed: INFO: rcu detected stall in do_idle run #1: crashed: INFO: rcu detected stall in kernfs_fop_write_iter run #2: crashed: INFO: rcu detected stall in net_tx_action run #3: crashed: INFO: rcu detected stall in sys_exit_group run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in net_tx_action run #6: crashed: INFO: rcu detected stall in tc_modify_qdisc run #7: crashed: INFO: rcu detected stall in sys_unlink run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in sys_getsockopt run #10: crashed: INFO: rcu detected stall in security_file_open run #11: crashed: INFO: rcu detected stall in corrupted run #12: crashed: INFO: rcu detected stall in tc_modify_qdisc run #13: crashed: INFO: rcu detected stall in mas_next_range run #14: crashed: INFO: rcu detected stall in net_tx_action run #15: crashed: INFO: rcu detected stall in pipe_read run #16: crashed: INFO: rcu detected stall in sys_clock_nanosleep run #17: crashed: INFO: rcu detected stall in newfstatat run #18: OK run #19: OK representative crash: INFO: rcu detected stall in do_idle, types: [HANG] # git bisect good c8777fa6f3c6e0cfa4ef7e7028df83d35a586671 Bisecting: 10 revisions left to test after this (roughly 4 steps) [4b80ced971b0d118f9a11dd503a5833a5016de92] netfilter: nf_tables: validate all pending tables determine whether the revision contains the guilty commit revision db1a6ad77c180efc7242d7204b9a0c72c8a5a1bb crashed and is reachable testing commit 4b80ced971b0d118f9a11dd503a5833a5016de92 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 903268053d6a1db913f4f536496fb786cda2994e17082862fd01f73dc72ac3f5 all runs: OK false negative chance: 0.000 # git bisect bad 4b80ced971b0d118f9a11dd503a5833a5016de92 Bisecting: 5 revisions left to test after this (roughly 3 steps) [b888c510f7b3d64ca75fc0f43b4a4bd1a611312f] igb: Avoid starting unnecessary workqueues determine whether the revision contains the guilty commit revision db1a6ad77c180efc7242d7204b9a0c72c8a5a1bb crashed and is reachable testing commit b888c510f7b3d64ca75fc0f43b4a4bd1a611312f gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 44d6f3a9747eeb7c35a705dc8307de0fb3507f04601f6999f7e1729b69004b03 run #0: crashed: INFO: rcu detected stall in nsim_dev_trap_report_work run #1: crashed: INFO: rcu detected stall in net_tx_action run #2: crashed: INFO: rcu detected stall in net_tx_action run #3: crashed: INFO: rcu detected stall in do_vmi_munmap run #4: crashed: INFO: rcu detected stall in net_tx_action run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in sys_getdents64 run #7: crashed: INFO: rcu detected stall in sys_exit_group run #8: crashed: INFO: rcu detected stall in kernfs_fop_write_iter run #9: crashed: INFO: rcu detected stall in sys_getsockopt run #10: crashed: INFO: rcu detected stall in syscall_enter_from_user_mode run #11: crashed: INFO: rcu detected stall in corrupted run #12: crashed: INFO: rcu detected stall in kernfs_fop_open run #13: crashed: INFO: rcu detected stall in packet_release run #14: crashed: INFO: rcu detected stall in nsim_dev_trap_report_work run #15: crashed: INFO: rcu detected stall in corrupted run #16: crashed: INFO: rcu detected stall in smp_call_function run #17: crashed: INFO: rcu detected stall in schedule_timeout run #18: OK run #19: OK representative crash: INFO: rcu detected stall in nsim_dev_trap_report_work, types: [HANG] # git bisect good b888c510f7b3d64ca75fc0f43b4a4bd1a611312f Bisecting: 2 revisions left to test after this (roughly 2 steps) [da71714e359b64bd7aab3bd56ec53f307f058133] net/sched: fix a qdisc modification with ambiguous command request determine whether the revision contains the guilty commit revision b888c510f7b3d64ca75fc0f43b4a4bd1a611312f crashed and is reachable testing commit da71714e359b64bd7aab3bd56ec53f307f058133 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 363d481aa34f6aa99f073a35722e616be8f8bcbcf5b3da30cf56d9dbe7d1e06a all runs: OK false negative chance: 0.000 # git bisect bad da71714e359b64bd7aab3bd56ec53f307f058133 Bisecting: 0 revisions left to test after this (roughly 1 step) [de43975721b97283d5f17eea4228faddf08f2681] igc: Fix the typo in the PTM Control macro determine whether the revision contains the guilty commit revision c8777fa6f3c6e0cfa4ef7e7028df83d35a586671 crashed and is reachable testing commit de43975721b97283d5f17eea4228faddf08f2681 gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b1221448c161c2e6a2f478d3e1d4a3ce1a97bdabf9abf8a05d359522ad5b2d3d run #0: crashed: INFO: rcu detected stall in net_tx_action run #1: crashed: INFO: rcu detected stall in sys_openat run #2: crashed: INFO: rcu detected stall in call_usermodehelper_exec_async run #3: crashed: INFO: rcu detected stall in net_tx_action run #4: crashed: INFO: rcu detected stall in net_tx_action run #5: crashed: INFO: rcu detected stall in sys_symlinkat run #6: crashed: INFO: rcu detected stall in do_vmi_munmap run #7: crashed: INFO: rcu detected stall in tc_modify_qdisc run #8: crashed: INFO: rcu detected stall in tc_modify_qdisc run #9: crashed: INFO: rcu detected stall in net_tx_action run #10: crashed: INFO: rcu detected stall in net_tx_action run #11: crashed: INFO: rcu detected stall in tc_modify_qdisc run #12: crashed: INFO: rcu detected stall in gc_worker run #13: crashed: INFO: rcu detected stall in tc_modify_qdisc run #14: crashed: INFO: rcu detected stall in newfstatat run #15: crashed: INFO: rcu detected stall in net_tx_action run #16: OK run #17: OK run #18: OK run #19: OK representative crash: INFO: rcu detected stall in net_tx_action, types: [HANG] # git bisect good de43975721b97283d5f17eea4228faddf08f2681 da71714e359b64bd7aab3bd56ec53f307f058133 is the first bad commit commit da71714e359b64bd7aab3bd56ec53f307f058133 Author: Jamal Hadi Salim Date: Tue Aug 22 06:12:31 2023 -0400 net/sched: fix a qdisc modification with ambiguous command request When replacing an existing root qdisc, with one that is of the same kind, the request boils down to essentially a parameterization change i.e not one that requires allocation and grafting of a new qdisc. syzbot was able to create a scenario which resulted in a taprio qdisc replacing an existing taprio qdisc with a combination of NLM_F_CREATE, NLM_F_REPLACE and NLM_F_EXCL leading to create and graft scenario. The fix ensures that only when the qdisc kinds are different that we should allow a create and graft, otherwise it goes into the "change" codepath. While at it, fix the code and comments to improve readability. While syzbot was able to create the issue, it did not zone on the root cause. Analysis from Vladimir Oltean helped narrow it down. v1->V2 changes: - remove "inline" function definition (Vladmir) - remove extrenous braces in branches (Vladmir) - change inline function names (Pedro) - Run tdc tests (Victor) v2->v3 changes: - dont break else/if (Simon) Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Reported-by: syzbot+a3618a167af2021433cd@syzkaller.appspotmail.com Closes: https://lore.kernel.org/netdev/20230816225759.g25x76kmgzya2gei@skbuf/T/ Tested-by: Vladimir Oltean Tested-by: Victor Nogueira Reviewed-by: Pedro Tammela Reviewed-by: Victor Nogueira Signed-off-by: Jamal Hadi Salim Signed-off-by: David S. Miller net/sched/sch_api.c | 53 ++++++++++++++++++++++++++++++++++++++++------------- 1 file changed, 40 insertions(+), 13 deletions(-) accumulated error probability: 0.00 culprit signature: 363d481aa34f6aa99f073a35722e616be8f8bcbcf5b3da30cf56d9dbe7d1e06a parent signature: b1221448c161c2e6a2f478d3e1d4a3ce1a97bdabf9abf8a05d359522ad5b2d3d reproducer is flaky (0.85 repro chance estimate) revisions tested: 21, total time: 8h39m24.518957511s (build: 4h15m14.357921693s, test: 4h11m30.849511929s) first good commit: da71714e359b64bd7aab3bd56ec53f307f058133 net/sched: fix a qdisc modification with ambiguous command request recipients (to): ["davem@davemloft.net" "jhs@mojatatu.com" "pctammela@mojatatu.com" "victor@mojatatu.com" "vladimir.oltean@nxp.com"] recipients (cc): []