ci starts bisection 2024-11-11 12:42:54.633427823 +0000 UTC m=+7933.670762360 bisecting fixing commit since fe46a7dd189e25604716c03576d05ac8a5209743 building syzkaller on 6baf506947ba27ed9ce775cf9351cb0886166083 ensuring issue is reproducible on original commit fe46a7dd189e25604716c03576d05ac8a5209743 testing commit fe46a7dd189e25604716c03576d05ac8a5209743 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 694ef2f302f8b4b2cc37279cc3a7adacd30f542effdf63e58978dc9b9b445269 all runs: crashed: WARNING: ODEBUG bug in advance_sched representative crash: WARNING: ODEBUG bug in advance_sched, types: [WARNING] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit fe46a7dd189e25604716c03576d05ac8a5209743 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c53a765d7c079431833bedc7db4ff81d1b1c28d51e251fc49b5c6a0aa3ba51b2 run #0: crashed: WARNING in call_rcu run #1: crashed: WARNING in call_rcu run #2: crashed: WARNING in call_rcu run #3: crashed: WARNING in call_rcu run #4: crashed: WARNING in call_rcu run #5: crashed: WARNING in call_rcu run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in dump_schedule run #7: crashed: WARNING in call_rcu run #8: crashed: WARNING in call_rcu run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in dump_schedule representative crash: WARNING in call_rcu, types: [WARNING] the bug reproduces without the instrumentation disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed kconfig minimization: base=4045 full=7986 leaves diff=2005 split chunks (needed=false): <2005> split chunk #0 of len 2005 into 5 parts testing without sub-chunk 1/5 disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit fe46a7dd189e25604716c03576d05ac8a5209743 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d1c2b19959c344e62d60e5017ad12668ea76808b95998d8411a349c877ced626 run #0: crashed: WARNING in call_rcu run #1: crashed: WARNING in call_rcu run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in dump_schedule run #3: crashed: WARNING in call_rcu run #4: crashed: WARNING in call_rcu run #5: crashed: WARNING in call_rcu run #6: crashed: WARNING in call_rcu run #7: crashed: WARNING in call_rcu run #8: crashed: WARNING in call_rcu run #9: crashed: WARNING in call_rcu representative crash: WARNING in call_rcu, types: [WARNING] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit fe46a7dd189e25604716c03576d05ac8a5209743 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 687eaefbbf7ba9705ddab8ff2da3d243af1e4c7cf71d24c3e62bc422f8e13099 run #0: crashed: WARNING in call_rcu run #1: crashed: WARNING in call_rcu run #2: crashed: WARNING in call_rcu run #3: crashed: WARNING in call_rcu run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in dump_schedule run #5: crashed: WARNING in call_rcu run #6: crashed: WARNING in call_rcu run #7: crashed: WARNING in call_rcu run #8: crashed: WARNING in call_rcu run #9: crashed: WARNING in call_rcu representative crash: WARNING in call_rcu, types: [WARNING] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit fe46a7dd189e25604716c03576d05ac8a5209743 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bf0843c636701c904da28363f68a1d66b0d1a67e8d6b54ddbb0f3ec966067d0b all runs: OK false negative chance: 0.000 testing without sub-chunk 4/5 disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit fe46a7dd189e25604716c03576d05ac8a5209743 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dbff252e66b7c2f9e764ec9b1c1a7c8e92379758fd5e2b5d26a47bc9de5e1aeb all runs: crashed: WARNING in call_rcu representative crash: WARNING in call_rcu, types: [WARNING] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit fe46a7dd189e25604716c03576d05ac8a5209743 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 93a68f3ba25daf31f44ed590a6b08b137ef51bd3e8b8999366b94768d8d837f1 all runs: crashed: WARNING in call_rcu representative crash: WARNING in call_rcu, types: [WARNING] the chunk can be dropped minimized to 401 configs; suspects: [AX25 BRIDGE BRIDGE_NETFILTER CAN CFG80211 CHECKPOINT_RESTORE DVB_CORE FB_CORE HAMRADIO HAVE_KVM HSR IMA IMA_APPRAISE IMA_APPRAISE_MODSIG INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_USER_ACCESS INPUT_JOYSTICK INPUT_MOUSE INTEGRITY INTEGRITY_ASYMMETRIC_KEYS INTEGRITY_SIGNATURE IP6_NF_RAW IPV6_MULTIPLE_TABLES IP_NF_RAW IP_SET IP_VS 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 KALLSYMS_BASE_RELATIVE 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_COMMON KVM_COMPAT KVM_GENERIC_DIRTYLOG_READ_PROTECT KVM_GENERIC_HARDWARE_ENABLING KVM_GENERIC_MEMORY_ATTRIBUTES KVM_GENERIC_MMU_NOTIFIER KVM_GENERIC_PRIVATE_MEM KVM_HYPERV KVM_MMIO KVM_PRIVATE_MEM KVM_PROVE_MMU KVM_SW_PROTECTED_VM 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 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_RAID0 MD_RAID1 MD_RAID10 MD_RAID456 MEDIA_ANALOG_TV_SUPPORT MEDIA_ATTACH MEDIA_CONTROLLER MEDIA_CONTROLLER_DVB MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_SUPPORT_FILTER MEDIA_TUNER MEDIA_TUNER_MSI001 MEMCG_KMEM 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 MODULE_COMPRESS_NONE MODULE_SIG_KEY_TYPE_RSA MODULE_SIG_SHA256 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_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_V2 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_SOCKET_IPV4 NF_SOCKET_IPV6 NF_TABLES NF_TABLES_BRIDGE NF_TABLES_INET NF_TABLES_IPV4 NF_TABLES_IPV6 NF_TABLES_NETDEV NF_TPROXY_IPV4 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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing current HEAD 2d5404caa8c7bb5c4e0435f94b28834ae5456623 testing commit 2d5404caa8c7bb5c4e0435f94b28834ae5456623 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b8193c2451284db2f5ce76188db872e719c467f2ac2f72664162e0af9174b213 all runs: OK false negative chance: 0.000 # git bisect start 2d5404caa8c7bb5c4e0435f94b28834ae5456623 fe46a7dd189e25604716c03576d05ac8a5209743 Bisecting: 25039 revisions left to test after this (roughly 15 steps) [51835949dda3783d4639cfa74ce13a3c9829de00] Merge tag 'net-next-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next determine whether the revision contains the guilty commit revision fe46a7dd189e25604716c03576d05ac8a5209743 crashed and is reachable testing commit 51835949dda3783d4639cfa74ce13a3c9829de00 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a70d471b051259b9ba24a97bbc53df7b5a7f21b966aee3ce7465866d0f6a52b4 all runs: crashed: WARNING in call_rcu representative crash: WARNING in call_rcu, types: [WARNING] # git bisect good 51835949dda3783d4639cfa74ce13a3c9829de00 Bisecting: 12505 revisions left to test after this (roughly 14 steps) [11b3125073d16929403d3aa7b2ae6a482060a937] Merge tag 'acpi-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm determine whether the revision contains the guilty commit revision fe46a7dd189e25604716c03576d05ac8a5209743 crashed and is reachable testing commit 11b3125073d16929403d3aa7b2ae6a482060a937 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5a3346790a974fa7cec8230f6d6f895f1a8b5a71c3a07e65a4572966a9975c6a all runs: crashed: WARNING in call_rcu representative crash: WARNING in call_rcu, types: [WARNING] # git bisect good 11b3125073d16929403d3aa7b2ae6a482060a937 Bisecting: 6313 revisions left to test after this (roughly 13 steps) [2d8721364ce83956d0a184a64052928589ef15df] s390/vfio-ap: Driver feature advertisement determine whether the revision contains the guilty commit revision fe46a7dd189e25604716c03576d05ac8a5209743 crashed and is reachable testing commit 2d8721364ce83956d0a184a64052928589ef15df gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: dadf142587bd284ec7a941c57068b038688793f912b1e0fdbc0a182aab34dbcd run #0: crashed: WARNING in call_rcu run #1: crashed: WARNING in call_rcu run #2: crashed: WARNING in call_rcu run #3: crashed: WARNING in call_rcu run #4: crashed: WARNING in call_rcu run #5: crashed: WARNING in call_rcu run #6: crashed: WARNING in call_rcu run #7: crashed: WARNING in call_rcu run #8: crashed: WARNING in call_rcu run #9: boot failed: can't ssh into the instance representative crash: WARNING in call_rcu, types: [WARNING] # git bisect good 2d8721364ce83956d0a184a64052928589ef15df Bisecting: 3289 revisions left to test after this (roughly 12 steps) [b707512b8b07396f8982103a84285a165a1bd94c] Merge tag 'staging-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging determine whether the revision contains the guilty commit revision fe46a7dd189e25604716c03576d05ac8a5209743 crashed and is reachable testing commit b707512b8b07396f8982103a84285a165a1bd94c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ddd0123dc7876a7f08c3a03106d85be56dd1da14f19b2f4942b8b5d9517389a2 all runs: crashed: WARNING in call_rcu representative crash: WARNING in call_rcu, types: [WARNING] # git bisect good b707512b8b07396f8982103a84285a165a1bd94c Bisecting: 1645 revisions left to test after this (roughly 11 steps) [325354cf00c7031c32618feaadc0f22eadee790c] Merge tag 'acpi-6.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm determine whether the revision contains the guilty commit revision fe46a7dd189e25604716c03576d05ac8a5209743 crashed and is reachable testing commit 325354cf00c7031c32618feaadc0f22eadee790c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 27030e955d77eb9f9f19d9c3f8e8f841220493db70969b8a24ad8a85e2d29604 all runs: crashed: WARNING in call_rcu representative crash: WARNING in call_rcu, types: [WARNING] # git bisect good 325354cf00c7031c32618feaadc0f22eadee790c Bisecting: 821 revisions left to test after this (roughly 10 steps) [c05c62850a8f035a267151dd86ea3daf887e28b8] Merge tag 'wireless-2024-10-29' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless determine whether the revision contains the guilty commit revision 325354cf00c7031c32618feaadc0f22eadee790c crashed and is reachable testing commit c05c62850a8f035a267151dd86ea3daf887e28b8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7870a809ad1abc11a9d27e18d7be1fd9ce7797210d460e05c6755eac5fbfc6c9 all runs: OK false negative chance: 0.000 # git bisect bad c05c62850a8f035a267151dd86ea3daf887e28b8 Bisecting: 402 revisions left to test after this (roughly 9 steps) [f8eacd8ad7a658b805c635f8ffad7913981f863c] Merge tag 'block-6.12-20241018' of git://git.kernel.dk/linux determine whether the revision contains the guilty commit revision b707512b8b07396f8982103a84285a165a1bd94c crashed and is reachable testing commit f8eacd8ad7a658b805c635f8ffad7913981f863c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2d22bea03f80794af412c06568f9dcb67fc9553202ae133fe809acd0c63e690b all runs: crashed: WARNING in call_rcu representative crash: WARNING in call_rcu, types: [WARNING] # git bisect good f8eacd8ad7a658b805c635f8ffad7913981f863c Bisecting: 201 revisions left to test after this (roughly 8 steps) [42f7652d3eb527d03665b09edac47f85fb600924] Linux 6.12-rc4 determine whether the revision contains the guilty commit revision fe46a7dd189e25604716c03576d05ac8a5209743 crashed and is reachable testing commit 42f7652d3eb527d03665b09edac47f85fb600924 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3e6e8af9bc894f020649ecdb1b8488fc953602533d02504f0c5d6b40197aa5bb all runs: crashed: WARNING in call_rcu representative crash: WARNING in call_rcu, types: [WARNING] # git bisect good 42f7652d3eb527d03665b09edac47f85fb600924 Bisecting: 99 revisions left to test after this (roughly 7 steps) [c9a50b90905a1dc79ca72d4a262da30d3572ca9e] Merge tag 'hid-for-linus-20241024' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid determine whether the revision contains the guilty commit revision fe46a7dd189e25604716c03576d05ac8a5209743 crashed and is reachable testing commit c9a50b90905a1dc79ca72d4a262da30d3572ca9e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ee095216b0629794331a5477ea0e728c06124af6b14c3e2af9fbd73faebf92bf all runs: crashed: WARNING in call_rcu representative crash: WARNING in call_rcu, types: [WARNING] # git bisect good c9a50b90905a1dc79ca72d4a262da30d3572ca9e Bisecting: 53 revisions left to test after this (roughly 6 steps) [d44cd8226449114780a8554fd253c7e3d171a0a6] Merge tag 'net-6.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net determine whether the revision contains the guilty commit revision 11b3125073d16929403d3aa7b2ae6a482060a937 crashed and is reachable testing commit d44cd8226449114780a8554fd253c7e3d171a0a6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 38c14913af5530f8e5decea77bc3702091aa1519902ad1b4157abad11d87be67 run #0: crashed: lost connection to test machine run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: lost connection to test machine, types: [UNKNOWN] unable to determine the verdict: 9 good runs (wanted 5), for bad wanted 5 in total, got 10 # git bisect skip d44cd8226449114780a8554fd253c7e3d171a0a6 Bisecting: 53 revisions left to test after this (roughly 6 steps) [9f86df0e7537c31b901b7448cf1c30f4fc1afc41] MAINTAINERS: add Simon as an official reviewer determine whether the revision contains the guilty commit revision 51835949dda3783d4639cfa74ce13a3c9829de00 crashed and is reachable testing commit 9f86df0e7537c31b901b7448cf1c30f4fc1afc41 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bd3590d53fd05aa42d4802f4c4992417bb2249bf2eb09a6d41b70f9a1430a7ad all runs: crashed: WARNING in call_rcu representative crash: WARNING in call_rcu, types: [WARNING] # git bisect good 9f86df0e7537c31b901b7448cf1c30f4fc1afc41 Bisecting: 53 revisions left to test after this (roughly 6 steps) [32d95ab330069f9c551b8e99770bb4e799730b55] wifi: iwlwifi: mvm: SAR table alignment determine whether the revision contains the guilty commit revision 42f7652d3eb527d03665b09edac47f85fb600924 crashed and is reachable testing commit 32d95ab330069f9c551b8e99770bb4e799730b55 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: afe03c2c12ba15e9bb237a527ce57e3a477697b111ac3ea92ec5776cb69d5668 all runs: OK false negative chance: 0.000 # git bisect bad 32d95ab330069f9c551b8e99770bb4e799730b55 Bisecting: 31 revisions left to test after this (roughly 5 steps) [1876479d9866689a929a629c2c2396f3b63159e6] Merge tag 'for-net-2024-10-23' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth determine whether the revision contains the guilty commit revision 9f86df0e7537c31b901b7448cf1c30f4fc1afc41 crashed and is reachable testing commit 1876479d9866689a929a629c2c2396f3b63159e6 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 743dc69a0cd5e1f86909a637fab3b4e1ea577cbff154e8e886547454d84aab1d all runs: OK false negative chance: 0.000 # git bisect bad 1876479d9866689a929a629c2c2396f3b63159e6 Bisecting: 15 revisions left to test after this (roughly 4 steps) [f7b4cf0306bbea500a613e4b618576452c1df4ba] mlxsw: spectrum_router: fix xa_store() error checking determine whether the revision contains the guilty commit revision 11b3125073d16929403d3aa7b2ae6a482060a937 crashed and is reachable testing commit f7b4cf0306bbea500a613e4b618576452c1df4ba gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 48e842de8ac1567dd88a32c809ffc8eb8d32ecdd99a635ddf37d8d25b327df3d all runs: crashed: WARNING in call_rcu representative crash: WARNING in call_rcu, types: [WARNING] # git bisect good f7b4cf0306bbea500a613e4b618576452c1df4ba Bisecting: 7 revisions left to test after this (roughly 3 steps) [1bf4470a3939c678fb822073e9ea77a0560bc6bb] Bluetooth: SCO: Fix UAF on sco_sock_timeout determine whether the revision contains the guilty commit revision 11b3125073d16929403d3aa7b2ae6a482060a937 crashed and is reachable testing commit 1bf4470a3939c678fb822073e9ea77a0560bc6bb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e4d348a561cdb0939ad1ca3578eff9d0954c62e9e982cb78148120e2c2bfe737 all runs: OK false negative chance: 0.000 # git bisect bad 1bf4470a3939c678fb822073e9ea77a0560bc6bb Bisecting: 3 revisions left to test after this (roughly 2 steps) [b22db8b8befe90b61c98626ca1a2fbb0505e9fe3] net: sched: use RCU read-side critical section in taprio_dump() determine whether the revision contains the guilty commit revision b707512b8b07396f8982103a84285a165a1bd94c crashed and is reachable testing commit b22db8b8befe90b61c98626ca1a2fbb0505e9fe3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c7fbe2cfaeda06e0bd464b6ce64d9cb98148338b16d0cb2d8ba2fa1ded4d10f4 all runs: OK false negative chance: 0.000 # git bisect bad b22db8b8befe90b61c98626ca1a2fbb0505e9fe3 Bisecting: 1 revision left to test after this (roughly 1 step) [34d35b4edbbe890a91bec939bfd29ad92517a52b] net/sched: act_api: deny mismatched skip_sw/skip_hw flags for actions created by classifiers determine whether the revision contains the guilty commit revision 11b3125073d16929403d3aa7b2ae6a482060a937 crashed and is reachable testing commit 34d35b4edbbe890a91bec939bfd29ad92517a52b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d4c2be18aeec0ba7530daa1beb124222efc3aa257465b92e4380c3bf10160c98 all runs: crashed: WARNING in call_rcu representative crash: WARNING in call_rcu, types: [WARNING] # git bisect good 34d35b4edbbe890a91bec939bfd29ad92517a52b Bisecting: 0 revisions left to test after this (roughly 0 steps) [f504465970aebb2467da548f7c1efbbf36d0f44b] net: sched: fix use-after-free in taprio_change() determine whether the revision contains the guilty commit revision b707512b8b07396f8982103a84285a165a1bd94c crashed and is reachable testing commit f504465970aebb2467da548f7c1efbbf36d0f44b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 11a1f32f2c8c478823f4693540e818a854e641e5a089aff8a28dc92998dd3c22 all runs: OK false negative chance: 0.000 # git bisect bad f504465970aebb2467da548f7c1efbbf36d0f44b f504465970aebb2467da548f7c1efbbf36d0f44b is the first bad commit commit f504465970aebb2467da548f7c1efbbf36d0f44b Author: Dmitry Antipov Date: Fri Oct 18 08:13:38 2024 +0300 net: sched: fix use-after-free in taprio_change() In 'taprio_change()', 'admin' pointer may become dangling due to sched switch / removal caused by 'advance_sched()', and critical section protected by 'q->current_entry_lock' is too small to prevent from such a scenario (which causes use-after-free detected by KASAN). Fix this by prefer 'rcu_replace_pointer()' over 'rcu_assign_pointer()' to update 'admin' immediately before an attempt to schedule freeing. Fixes: a3d43c0d56f1 ("taprio: Add support adding an admin schedule") Reported-by: syzbot+b65e0af58423fc8a73aa@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=b65e0af58423fc8a73aa Acked-by: Vinicius Costa Gomes Signed-off-by: Dmitry Antipov Link: https://patch.msgid.link/20241018051339.418890-1-dmantipov@yandex.ru Signed-off-by: Paolo Abeni net/sched/sch_taprio.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) accumulated error probability: 0.00 culprit signature: 11a1f32f2c8c478823f4693540e818a854e641e5a089aff8a28dc92998dd3c22 parent signature: d4c2be18aeec0ba7530daa1beb124222efc3aa257465b92e4380c3bf10160c98 revisions tested: 26, total time: 6h47m35.921565049s (build: 3h20m28.006837439s, test: 3h10m2.755603785s) first good commit: f504465970aebb2467da548f7c1efbbf36d0f44b net: sched: fix use-after-free in taprio_change() recipients (to): ["dmantipov@yandex.ru" "pabeni@redhat.com" "vinicius.gomes@intel.com"] recipients (cc): []