ci2 starts bisection 2024-08-08 02:29:39.247376061 +0000 UTC m=+5138.924631296 bisecting fixing commit since 4878aadf2d1519f3731ae300ce1fef78fc63ee30 building syzkaller on c0f1611a36d66bb0bb8e2f294b97fb685bfc5f9c ensuring issue is reproducible on original commit 4878aadf2d1519f3731ae300ce1fef78fc63ee30 testing commit 4878aadf2d1519f3731ae300ce1fef78fc63ee30 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 91a8b6a3e6cc1433d7f1098fcb3e3f8d453fd7fbad4cf40b633fac5ec4868d08 run #0: crashed: INFO: task hung in crda_timeout_work run #1: crashed: INFO: task hung in linkwatch_event run #2: crashed: INFO: task hung in addrconf_dad_work run #3: crashed: INFO: task hung in cangw_pernet_exit run #4: crashed: INFO: task hung in addrconf_dad_work run #5: crashed: INFO: task hung in linkwatch_event run #6: crashed: INFO: task hung in cangw_pernet_exit run #7: crashed: INFO: task hung in addrconf_dad_work run #8: crashed: INFO: task hung in addrconf_dad_work run #9: crashed: INFO: task hung in cangw_pernet_exit run #10: crashed: INFO: task hung in crda_timeout_work run #11: crashed: INFO: task hung in addrconf_dad_work run #12: crashed: INFO: task hung in addrconf_dad_work run #13: crashed: INFO: task hung in cangw_pernet_exit run #14: crashed: INFO: task hung in addrconf_dad_work run #15: crashed: INFO: task hung in addrconf_dad_work run #16: crashed: INFO: task hung in rtnetlink_rcv_msg run #17: crashed: INFO: task hung in cangw_pernet_exit run #18: crashed: INFO: task hung in crda_timeout_work run #19: crashed: INFO: task hung in cangw_pernet_exit representative crash: INFO: task hung in crda_timeout_work, 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 4878aadf2d1519f3731ae300ce1fef78fc63ee30 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 35a62d0842275e962e47ddf87143430443cbad3502577fa19dd582d336101b07 run #0: crashed: INFO: task hung in netdev_run_todo run #1: crashed: INFO: task hung in addrconf_dad_work run #2: crashed: INFO: task hung in netdev_run_todo run #3: crashed: INFO: task hung in netdev_run_todo run #4: crashed: INFO: task hung in netdev_run_todo run #5: crashed: INFO: task hung in addrconf_dad_work run #6: crashed: INFO: task hung in linkwatch_event run #7: crashed: INFO: task hung in netdev_run_todo run #8: crashed: INFO: task hung in addrconf_dad_work run #9: crashed: INFO: task hung in linkwatch_event representative crash: INFO: task hung in netdev_run_todo, types: [HANG] the bug reproduces without the instrumentation disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed kconfig minimization: base=3703 full=7269 leaves diff=1983 split chunks (needed=false): <1983> split chunk #0 of len 1983 into 5 parts testing without sub-chunk 1/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed testing commit 4878aadf2d1519f3731ae300ce1fef78fc63ee30 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ae272a6a92f177f2400f18fb39c277b547387fecce7d185615c2a06c9ae6d14c run #0: crashed: INFO: task hung in addrconf_dad_work run #1: crashed: INFO: task hung in linkwatch_event run #2: crashed: INFO: task hung in addrconf_dad_work run #3: crashed: INFO: task hung in addrconf_dad_work run #4: crashed: INFO: task hung in crda_timeout_work run #5: crashed: INFO: task hung in regdb_fw_cb run #6: crashed: INFO: task hung in crda_timeout_work run #7: crashed: INFO: task hung in gate_exit_net run #8: crashed: INFO: task hung in addrconf_dad_work run #9: crashed: INFO: task hung in regdb_fw_cb representative crash: INFO: task hung in addrconf_dad_work, types: [HANG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed testing commit 4878aadf2d1519f3731ae300ce1fef78fc63ee30 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dc433a6f463a9e0a5145ff18c6b201d72eb41181888afec5a2f8e4da707f8de1 run #0: crashed: INFO: task hung in netdev_run_todo run #1: crashed: INFO: task hung in addrconf_dad_work run #2: crashed: INFO: task hung in addrconf_dad_work run #3: crashed: INFO: task hung in addrconf_dad_work run #4: crashed: INFO: task hung in addrconf_dad_work run #5: crashed: INFO: task hung in netdev_run_todo run #6: crashed: INFO: task hung in addrconf_dad_work run #7: crashed: INFO: task hung in addrconf_dad_work run #8: crashed: INFO: task hung in addrconf_dad_work run #9: crashed: INFO: task hung in gate_exit_net representative crash: INFO: task hung in netdev_run_todo, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed testing commit 4878aadf2d1519f3731ae300ce1fef78fc63ee30 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8a22adf3bacd5a8f374271f22a44ec0f51142d2ef0cdc58d085cd6e39dd1ed8f 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 4878aadf2d1519f3731ae300ce1fef78fc63ee30 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a1fe7b890f416c60bace35e3285ddc1dc2cf53734f44bc1dcfeae2c1684b9ba9 all runs: crashed: INFO: rcu detected stall in tc_ctl_action representative crash: INFO: rcu detected stall in tc_ctl_action, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 4878aadf2d1519f3731ae300ce1fef78fc63ee30 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ae9ede7ae1228870b4fc53faa777053ee10a29e81e06a8f8ba6ce7dafef52495 all runs: crashed: INFO: rcu detected stall in tc_ctl_action representative crash: INFO: rcu detected stall in tc_ctl_action, types: [HANG] the chunk can be dropped minimized to 397 configs; suspects: [AX25 BRIDGE BRIDGE_NETFILTER CAN CFG80211 CHECKPOINT_RESTORE CPU_MITIGATIONS 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 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_INTEL 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 LIBNVDIMM LINEAR_RANGES LLC LLC2 LOGIG940_FF LOGIRUMBLEPAD2_FF LOGO LOGO_LINUX_MONO LOGO_LINUX_VGA16 LPC_ICH 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 MEDIA_TUNER_XC2028 MEDIA_TUNER_XC5000 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 MITIGATION_RFDS MITIGATION_SPECTRE_BHI 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_BLK ND_BTT ND_CLAIM ND_PFN NETDEVSIM NETFILTER_ADVANCED NETFILTER_FAMILY_ARP NETFILTER_FAMILY_BRIDGE NETFILTER_NETLINK_ACCT NETFILTER_NETLINK_GLUE_CT NETFILTER_NETLINK_OSF NETFILTER_NETLINK_QUEUE NETFILTER_SYNPROXY 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 NETFS_SUPPORT 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_CGROUP 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_EGRESS 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_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_COUNTER 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_OBJREF 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_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_FLOW_TABLE_IPV4 NF_FLOW_TABLE_IPV6 NF_FLOW_TABLE_PROCFS NF_NAT_AMANDA NF_NAT_H323 NF_NAT_PPTP NF_NAT_REDIRECT NF_NAT_SNMP_BASIC NF_NAT_TFTP NF_SOCKET_IPV4 NF_SOCKET_IPV6 NF_TABLES NF_TABLES_ARP NF_TABLES_BRIDGE NF_TABLES_INET NF_TABLES_IPV4 NF_TABLES_IPV6 NF_TABLES_NETDEV NF_TPROXY_IPV4 NF_TPROXY_IPV6 NILFS2_FS NLMON NLS_CODEPAGE_1250 NLS_CODEPAGE_1251 NLS_CODEPAGE_737 NLS_CODEPAGE_775 PARTITION_ADVANCED PSAMPLE RC_CORE RC_DEVICES RFKILL SPI USB_GADGET USB_MUSB_HDRC VIDEO_DEV VIDEO_V4L2 WAN WATCH_QUEUE WIRELESS WLAN WWAN X25 X86_X32] disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed determining the merge base between 4878aadf2d1519f3731ae300ce1fef78fc63ee30 and 6a0e38264012809afa24113ee2162dc07f4ed22b 8bb7eca972ad531c9b149c0a51ab43a417385813/Linux 5.15 is a merge base, check if it has the bug testing commit 8bb7eca972ad531c9b149c0a51ab43a417385813 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e3c110569de5d1adc1e4f45e0bd934cd95f0336926d1a49916c1a582f8eda23c all runs: crashed: INFO: rcu detected stall in tc_ctl_action representative crash: INFO: rcu detected stall in tc_ctl_action, types: [HANG] testing current HEAD 6a0e38264012809afa24113ee2162dc07f4ed22b testing commit 6a0e38264012809afa24113ee2162dc07f4ed22b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d33209f9bccb72f516702da6e43e0107fc7bb213c88cd9d58c01d54e62cd2b04 all runs: OK false negative chance: 0.000 # git bisect start 6a0e38264012809afa24113ee2162dc07f4ed22b 8bb7eca972ad531c9b149c0a51ab43a417385813 Bisecting: 125065 revisions left to test after this (roughly 17 steps) [8bf6e20253b2d2b614f2c0b491f840e956fa6b05] Merge tag 'drm-intel-next-2023-03-07' of git://anongit.freedesktop.org/drm/drm-intel into drm-next determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 8bf6e20253b2d2b614f2c0b491f840e956fa6b05 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6da98b535caf7e0c6e2e9a7a41bd824f7e5433abe5904e77bb1999ee538143bb all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 8bf6e20253b2d2b614f2c0b491f840e956fa6b05 Bisecting: 62569 revisions left to test after this (roughly 16 steps) [be3ca57cfb777ad820c6659d52e60bbdd36bf5ff] Merge tag 'media/v6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit be3ca57cfb777ad820c6659d52e60bbdd36bf5ff gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e1476a10812751717e28230f948125e14f9a269853d088c8187506c82f53bd50 all runs: crashed: BUG: soft lockup in tc_ctl_action representative crash: BUG: soft lockup in tc_ctl_action, types: [HANG] # git bisect good be3ca57cfb777ad820c6659d52e60bbdd36bf5ff Bisecting: 31323 revisions left to test after this (roughly 15 steps) [3bcb0bf65c2b8d67dbe7509da8d1461ee4445db7] Merge tag 'tty-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 3bcb0bf65c2b8d67dbe7509da8d1461ee4445db7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fef9ef33c1eb63332237bad7c0e26d0566bcdcbd2d3d4eb6aa63a42ceb3fca6b all runs: crashed: BUG: soft lockup in tc_ctl_action representative crash: BUG: soft lockup in tc_ctl_action, types: [HANG] # git bisect good 3bcb0bf65c2b8d67dbe7509da8d1461ee4445db7 Bisecting: 15672 revisions left to test after this (roughly 14 steps) [c40b1994b9ffb45e19e6d83b7655d7b9db0174c3] Merge tag 'bcachefs-2024-05-24' of https://evilpiepirate.org/git/bcachefs determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit c40b1994b9ffb45e19e6d83b7655d7b9db0174c3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a06a2418060b7ff2e8d47cf1e7b0ae0164164cb63c7d1db610f275eb48a5e644 all runs: crashed: BUG: soft lockup in tc_ctl_action representative crash: BUG: soft lockup in tc_ctl_action, types: [HANG] # git bisect good c40b1994b9ffb45e19e6d83b7655d7b9db0174c3 Bisecting: 7811 revisions left to test after this (roughly 13 steps) [b1bc554e009e3aeed7e4cfd2e717c7a34a98c683] Merge tag 'media/v6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media determine whether the revision contains the guilty commit revision 8bf6e20253b2d2b614f2c0b491f840e956fa6b05 crashed and is reachable testing commit b1bc554e009e3aeed7e4cfd2e717c7a34a98c683 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 276c70b472c94f07e3b92a17286b2fe0e6365438b566ffb90e0dcf539b485021 all runs: OK false negative chance: 0.000 # git bisect bad b1bc554e009e3aeed7e4cfd2e717c7a34a98c683 Bisecting: 3930 revisions left to test after this (roughly 12 steps) [d944c27a9d58179b2fd96e23104f213481ec1e8d] Merge branch 'virtio-net-support-af_xdp-zero-copy' determine whether the revision contains the guilty commit revision 8bf6e20253b2d2b614f2c0b491f840e956fa6b05 crashed and is reachable testing commit d944c27a9d58179b2fd96e23104f213481ec1e8d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 688fda2053cb6c5454c70a1845d2f871758001477ed785a2f96250c5897220fe all runs: OK false negative chance: 0.000 # git bisect bad d944c27a9d58179b2fd96e23104f213481ec1e8d Bisecting: 1965 revisions left to test after this (roughly 11 steps) [d21a103b612c4bb149faf2b5eb25f4667378824b] net: stmmac: unexport stmmac_pltfr_init/exit() determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit d21a103b612c4bb149faf2b5eb25f4667378824b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9b695aee429c5032ff6d27e3c7057c16c1694eb4f653433b6afd93fe7fba7397 all runs: OK false negative chance: 0.000 # git bisect bad d21a103b612c4bb149faf2b5eb25f4667378824b Bisecting: 982 revisions left to test after this (roughly 10 steps) [2ba6d15786f6c11b6e497eebe68b8baec52f7984] Merge branch 'fix-changing-dsa-conduit' determine whether the revision contains the guilty commit revision 8bf6e20253b2d2b614f2c0b491f840e956fa6b05 crashed and is reachable testing commit 2ba6d15786f6c11b6e497eebe68b8baec52f7984 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fc81101e1e7960397665bf28dfc9d5f77921f0b550157dff4ff92fa6732e160d all runs: crashed: BUG: soft lockup in tc_ctl_action representative crash: BUG: soft lockup in tc_ctl_action, types: [HANG] # git bisect good 2ba6d15786f6c11b6e497eebe68b8baec52f7984 Bisecting: 490 revisions left to test after this (roughly 9 steps) [042742a1ff1f37ca88c303a9e61afc8c56b23657] Merge tag 'sound-6.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound determine whether the revision contains the guilty commit revision 8bf6e20253b2d2b614f2c0b491f840e956fa6b05 crashed and is reachable testing commit 042742a1ff1f37ca88c303a9e61afc8c56b23657 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 490e4c68d9139dfe2ba24f1b305c30c8a6d206110263ebe5921cdb4a81b6f60d all runs: crashed: BUG: soft lockup in tc_ctl_action representative crash: BUG: soft lockup in tc_ctl_action, types: [HANG] # git bisect good 042742a1ff1f37ca88c303a9e61afc8c56b23657 Bisecting: 234 revisions left to test after this (roughly 8 steps) [b1156532bc29ac9a8d1cf71510cabc8f68181540] Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit b1156532bc29ac9a8d1cf71510cabc8f68181540 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6974b3dc13b7f63e64d1b3b5651cf95bd5af065927c658e7cd7ac3dc8cde9e7b all runs: crashed: BUG: soft lockup in tc_ctl_action representative crash: BUG: soft lockup in tc_ctl_action, types: [HANG] # git bisect good b1156532bc29ac9a8d1cf71510cabc8f68181540 Bisecting: 117 revisions left to test after this (roughly 7 steps) [9f1f70dd850038b37e8b103ef0cc6f5eaeb6a8fc] rds:Simplify the allocation of slab caches determine whether the revision contains the guilty commit revision be3ca57cfb777ad820c6659d52e60bbdd36bf5ff crashed and is reachable testing commit 9f1f70dd850038b37e8b103ef0cc6f5eaeb6a8fc gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f87ffa3382f9fe5b5274a780d53ff262435cff21d96d8a9d368254d6ad55d55b all runs: crashed: BUG: soft lockup in tc_ctl_action representative crash: BUG: soft lockup in tc_ctl_action, types: [HANG] # git bisect good 9f1f70dd850038b37e8b103ef0cc6f5eaeb6a8fc Bisecting: 59 revisions left to test after this (roughly 6 steps) [221200ffeb065c6bbd196760c168b42305961655] selftests: add selftest for the SRv6 End.DX6 behavior with netfilter determine whether the revision contains the guilty commit revision 8bf6e20253b2d2b614f2c0b491f840e956fa6b05 crashed and is reachable testing commit 221200ffeb065c6bbd196760c168b42305961655 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 98e78749b9556bd4b98de69c1169d86354fbb5643087b722973491409054bf10 all runs: OK false negative chance: 0.000 # git bisect bad 221200ffeb065c6bbd196760c168b42305961655 Bisecting: 28 revisions left to test after this (roughly 5 steps) [e874557fce1b6023efafd523aee0c347bf7f1694] selftests: mptcp: userspace_pm: fixed subtest names determine whether the revision contains the guilty commit revision 8bf6e20253b2d2b614f2c0b491f840e956fa6b05 crashed and is reachable testing commit e874557fce1b6023efafd523aee0c347bf7f1694 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0c94e632227ca15d2f67418f8bda2abbd8b45e467356f57b2abe6b70ec3ffc6f all runs: crashed: BUG: soft lockup in tc_ctl_action representative crash: BUG: soft lockup in tc_ctl_action, types: [HANG] # git bisect good e874557fce1b6023efafd523aee0c347bf7f1694 Bisecting: 14 revisions left to test after this (roughly 4 steps) [e2b447c9a1bba718f9c07513a1e8958209e862a1] selftests: openvswitch: Use bash as interpreter determine whether the revision contains the guilty commit revision 8bf6e20253b2d2b614f2c0b491f840e956fa6b05 crashed and is reachable testing commit e2b447c9a1bba718f9c07513a1e8958209e862a1 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a8b5c5d52a4fc52569ba02dbe5b74402b2b007e322dede5f49f6b789aa40f208 all runs: OK false negative chance: 0.000 # git bisect bad e2b447c9a1bba718f9c07513a1e8958209e862a1 Bisecting: 6 revisions left to test after this (roughly 3 steps) [8c248cd836014339498486f14f435c0e344183a7] net: lan743x: Support WOL at both the PHY and MAC appropriately determine whether the revision contains the guilty commit revision 8bf6e20253b2d2b614f2c0b491f840e956fa6b05 crashed and is reachable testing commit 8c248cd836014339498486f14f435c0e344183a7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3ca1b4aeda37f478f5fe7bbd7a3c427127e73d015cc637a4159f274d95279b57 all runs: crashed: BUG: soft lockup in tc_ctl_action representative crash: BUG: soft lockup in tc_ctl_action, types: [HANG] # git bisect good 8c248cd836014339498486f14f435c0e344183a7 Bisecting: 3 revisions left to test after this (roughly 2 steps) [d864319871b05fadd153e0aede4811ca7008f5d6] net/sched: act_api: fix possible infinite loop in tcf_idr_check_alloc() determine whether the revision contains the guilty commit revision 8bf6e20253b2d2b614f2c0b491f840e956fa6b05 crashed and is reachable testing commit d864319871b05fadd153e0aede4811ca7008f5d6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2bc7a4017320af3f20bed6f2e05fcab6a392e51db28ebf389fcb4023c8fbd45d all runs: OK false negative chance: 0.000 # git bisect bad d864319871b05fadd153e0aede4811ca7008f5d6 Bisecting: 0 revisions left to test after this (roughly 1 step) [0271d28941cc8424f7979da692dea525f9fe1be9] Merge branch 'net-lan743x-fixes-for-multiple-wol-related-issues' determine whether the revision contains the guilty commit revision 8bf6e20253b2d2b614f2c0b491f840e956fa6b05 crashed and is reachable testing commit 0271d28941cc8424f7979da692dea525f9fe1be9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 75ead5fc325531b94b1aa4bb3408e5b25df441d9e28c0bfb918763cf6a7cc7cb all runs: crashed: BUG: soft lockup in tc_ctl_action representative crash: BUG: soft lockup in tc_ctl_action, types: [HANG] # git bisect good 0271d28941cc8424f7979da692dea525f9fe1be9 d864319871b05fadd153e0aede4811ca7008f5d6 is the first bad commit commit d864319871b05fadd153e0aede4811ca7008f5d6 Author: David Ruth Date: Fri Jun 14 19:03:26 2024 +0000 net/sched: act_api: fix possible infinite loop in tcf_idr_check_alloc() syzbot found hanging tasks waiting on rtnl_lock [1] A reproducer is available in the syzbot bug. When a request to add multiple actions with the same index is sent, the second request will block forever on the first request. This holds rtnl_lock, and causes tasks to hang. Return -EAGAIN to prevent infinite looping, while keeping documented behavior. [1] INFO: task kworker/1:0:5088 blocked for more than 143 seconds. Not tainted 6.9.0-rc4-syzkaller-00173-g3cdb45594619 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:0 state:D stack:23744 pid:5088 tgid:5088 ppid:2 flags:0x00004000 Workqueue: events_power_efficient reg_check_chans_work Call Trace: context_switch kernel/sched/core.c:5409 [inline] __schedule+0xf15/0x5d00 kernel/sched/core.c:6746 __schedule_loop kernel/sched/core.c:6823 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6838 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752 wiphy_lock include/net/cfg80211.h:5953 [inline] reg_leave_invalid_chans net/wireless/reg.c:2466 [inline] reg_check_chans_work+0x10a/0x10e0 net/wireless/reg.c:2481 Fixes: 0190c1d452a9 ("net: sched: atomically check-allocate action") Reported-by: syzbot+b87c222546179f4513a7@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=b87c222546179f4513a7 Signed-off-by: David Ruth Reviewed-by: Jamal Hadi Salim Link: https://lore.kernel.org/r/20240614190326.1349786-1-druth@chromium.org Signed-off-by: Paolo Abeni net/sched/act_api.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) accumulated error probability: 0.00 culprit signature: 2bc7a4017320af3f20bed6f2e05fcab6a392e51db28ebf389fcb4023c8fbd45d parent signature: 75ead5fc325531b94b1aa4bb3408e5b25df441d9e28c0bfb918763cf6a7cc7cb revisions tested: 26, total time: 6h18m1.189249577s (build: 2h38m13.41537045s, test: 3h24m33.840519534s) first good commit: d864319871b05fadd153e0aede4811ca7008f5d6 net/sched: act_api: fix possible infinite loop in tcf_idr_check_alloc() recipients (to): ["druth@chromium.org" "jhs@mojatatu.com" "pabeni@redhat.com"] recipients (cc): []