ci2 starts bisection 2024-04-26 03:38:04.414654182 +0000 UTC m=+128715.190298737 bisecting fixing commit since b95c01af211304429c11b8c8bdf791ab11f7f395 building syzkaller on bcd9b39fec6079d0458646b5a7c4fb7e5421c49e ensuring issue is reproducible on original commit b95c01af211304429c11b8c8bdf791ab11f7f395 testing commit b95c01af211304429c11b8c8bdf791ab11f7f395 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ed0a5f568a23b9f0bb0042c5c98632580c67e614d2c7b06b19bd9eb1539dd014 run #0: crashed: KASAN: use-after-free Read in advance_sched run #1: crashed: KASAN: use-after-free Read in advance_sched run #2: crashed: KASAN: use-after-free Read in dump_schedule run #3: crashed: KASAN: use-after-free Read in dump_schedule run #4: crashed: KASAN: use-after-free Read in dump_schedule run #5: crashed: KASAN: use-after-free Read in dump_schedule run #6: crashed: WARNING: ODEBUG bug in advance_sched run #7: crashed: KASAN: use-after-free Read in dump_schedule run #8: crashed: KASAN: use-after-free Read in dump_schedule run #9: crashed: KASAN: use-after-free Read in dump_schedule run #10: crashed: KASAN: use-after-free Read in dump_schedule run #11: crashed: KASAN: use-after-free Read in dump_schedule run #12: crashed: KASAN: use-after-free Read in dump_schedule run #13: crashed: KASAN: use-after-free Read in dump_schedule run #14: crashed: KASAN: use-after-free Read in dump_schedule run #15: crashed: KASAN: use-after-free Read in dump_schedule run #16: crashed: KASAN: use-after-free Read in dump_schedule run #17: crashed: KASAN: use-after-free Read in dump_schedule run #18: crashed: KASAN: use-after-free Read in dump_schedule run #19: crashed: KASAN: use-after-free Read in dump_schedule representative crash: KASAN: use-after-free Read in advance_sched, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit b95c01af211304429c11b8c8bdf791ab11f7f395 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: af1cbbf153a38c6b06f8ee6521a578642c7e1ad10851f05e1ad6ba7ef978c424 all runs: crashed: KASAN: use-after-free Read in dump_schedule representative crash: KASAN: use-after-free Read in dump_schedule, types: [KASAN] the bug reproduces without the instrumentation disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=3703 full=7262 leaves diff=1978 split chunks (needed=false): <1978> split chunk #0 of len 1978 into 5 parts testing without sub-chunk 1/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit b95c01af211304429c11b8c8bdf791ab11f7f395 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e5005329cb86743c7c71dd58952e44412d5ae6aebd9d15ba072a730425c5b6f4 all runs: crashed: KASAN: use-after-free Read in dump_schedule representative crash: KASAN: use-after-free Read in dump_schedule, types: [KASAN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit b95c01af211304429c11b8c8bdf791ab11f7f395 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5ad7ecf8b1c316fbe7e1e6189ada04f6eb3f32d35933d90e7a3c1bfb2af78b0c all runs: crashed: KASAN: use-after-free Read in dump_schedule representative crash: KASAN: use-after-free Read in dump_schedule, types: [KASAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit b95c01af211304429c11b8c8bdf791ab11f7f395 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c0603cbad9b3d73bb5b45daf60983c60ef954026301034f662f9e9dd217ba811 all runs: OK false negative chance: 0.000 testing without sub-chunk 4/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed testing commit b95c01af211304429c11b8c8bdf791ab11f7f395 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6ab179d0fd987c25dbb5193df700b04cfd79f98df9d8f77ef42f049891baf245 all runs: crashed: KASAN: use-after-free Read in dump_schedule representative crash: KASAN: use-after-free Read in dump_schedule, types: [KASAN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit b95c01af211304429c11b8c8bdf791ab11f7f395 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 72196e74ced90e46dc0ea16b071b75e9d59924fe3476cb8ee38474315131db68 all runs: crashed: KASAN: use-after-free Read in dump_schedule representative crash: KASAN: use-after-free Read in dump_schedule, types: [KASAN] the chunk can be dropped minimized to 396 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 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 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_V2_ACL NFSD_V3 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_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 NLS_CODEPAGE_850 NLS_CODEPAGE_852 PARTITION_ADVANCED PSAMPLE RFKILL SPI USB_GADGET USB_MUSB_HDRC VIDEO_DEV VIDEO_V4L2 WAN WATCH_QUEUE WIRELESS WLAN WWAN X25 X86_X32] disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing current HEAD c52b9710c83d3b8ab63bb217cc7c8b61e13f12cd testing commit c52b9710c83d3b8ab63bb217cc7c8b61e13f12cd gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2218fb96e43dc299989a68fed7cda5f47b1b85b45996612b203c231deac7ce3e all runs: crashed: KASAN: use-after-free Read in dump_schedule representative crash: KASAN: use-after-free Read in dump_schedule, types: [KASAN] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 1h38m20.241970463s (build: 29m47.274437748s, test: 1h6m50.699413119s) crash still not fixed or there were kernel test errors commit msg: Linux 5.15.156 crash: KASAN: use-after-free Read in dump_schedule ================================================================== BUG: KASAN: use-after-free in dump_schedule+0x735/0x7a0 net/sched/sch_taprio.c:1862 Read of size 8 at addr ffff88810cbbd7c0 by task syz-executor.0/7976 CPU: 0 PID: 7976 Comm: syz-executor.0 Not tainted 5.15.156-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x8e/0xdd lib/dump_stack.c:106 print_address_description.constprop.0.cold+0x6c/0x309 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:451 dump_schedule+0x735/0x7a0 net/sched/sch_taprio.c:1862 taprio_dump+0x563/0xb40 net/sched/sch_taprio.c:1931 tc_fill_qdisc+0x5cc/0x1110 net/sched/sch_api.c:923 qdisc_notify.isra.0+0x2b3/0x310 net/sched/sch_api.c:990 tc_modify_qdisc+0xb1e/0x1ba0 net/sched/sch_api.c:1688 rtnetlink_rcv_msg+0x468/0xac0 net/core/rtnetlink.c:5629 netlink_rcv_skb+0x153/0x400 net/netlink/af_netlink.c:2505 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x64a/0x8f0 net/netlink/af_netlink.c:1356 netlink_sendmsg+0x8ea/0xe00 net/netlink/af_netlink.c:1924 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg+0xcf/0x120 net/socket.c:716 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2431 ___sys_sendmsg+0xf3/0x170 net/socket.c:2485 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2514 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x33/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fdf85b16da9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fdf856980c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fdf85c44f80 RCX: 00007fdf85b16da9 RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 00007fdf85b6347a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007fdf85c44f80 R15: 00007ffdbe9d0ce8 Allocated by task 7964: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc mm/kasan/common.c:513 [inline] __kasan_kmalloc+0x7c/0x90 mm/kasan/common.c:522 kmalloc include/linux/slab.h:591 [inline] kzalloc include/linux/slab.h:721 [inline] taprio_change+0x5b2/0x3af0 net/sched/sch_taprio.c:1498 qdisc_change net/sched/sch_api.c:1349 [inline] tc_modify_qdisc+0x96a/0x1ba0 net/sched/sch_api.c:1686 rtnetlink_rcv_msg+0x468/0xac0 net/core/rtnetlink.c:5629 netlink_rcv_skb+0x153/0x400 net/netlink/af_netlink.c:2505 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x64a/0x8f0 net/netlink/af_netlink.c:1356 netlink_sendmsg+0x8ea/0xe00 net/netlink/af_netlink.c:1924 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg+0xcf/0x120 net/socket.c:716 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2431 ___sys_sendmsg+0xf3/0x170 net/socket.c:2485 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2514 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x33/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Freed by task 11: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:360 ____kasan_slab_free mm/kasan/common.c:366 [inline] ____kasan_slab_free mm/kasan/common.c:328 [inline] __kasan_slab_free+0xe0/0x110 mm/kasan/common.c:374 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook mm/slub.c:1731 [inline] slab_free mm/slub.c:3499 [inline] kfree+0xd0/0x4c0 mm/slub.c:4559 rcu_do_batch kernel/rcu/tree.c:2523 [inline] rcu_core+0x58c/0x1190 kernel/rcu/tree.c:2763 __do_softirq+0x14a/0x59a kernel/softirq.c:558 Last potentially related work creation: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_record_aux_stack+0xc5/0xf0 mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:3007 [inline] call_rcu+0x98/0x6d0 kernel/rcu/tree.c:3087 taprio_change+0x2b77/0x3af0 net/sched/sch_taprio.c:1618 qdisc_change net/sched/sch_api.c:1349 [inline] tc_modify_qdisc+0x96a/0x1ba0 net/sched/sch_api.c:1686 rtnetlink_rcv_msg+0x468/0xac0 net/core/rtnetlink.c:5629 netlink_rcv_skb+0x153/0x400 net/netlink/af_netlink.c:2505 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x64a/0x8f0 net/netlink/af_netlink.c:1356 netlink_sendmsg+0x8ea/0xe00 net/netlink/af_netlink.c:1924 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg+0xcf/0x120 net/socket.c:716 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2431 ___sys_sendmsg+0xf3/0x170 net/socket.c:2485 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2514 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x33/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 The buggy address belongs to the object at ffff88810cbbd780 which belongs to the cache kmalloc-96 of size 96 The buggy address is located 64 bytes inside of 96-byte region [ffff88810cbbd780, ffff88810cbbd7e0) The buggy address belongs to the page: page:ffffea000432ef40 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10cbbd flags: 0x200000000000200(slab|node=0|zone=2) raw: 0200000000000200 dead000000000100 dead000000000122 ffff888100041780 raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, ts 7260673761, free_ts 7194227360 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x165a/0x2900 mm/page_alloc.c:4159 __alloc_pages+0x2b3/0x590 mm/page_alloc.c:5423 alloc_page_interleave+0x1e/0x1a0 mm/mempolicy.c:2031 alloc_pages+0x270/0x3d0 mm/mempolicy.c:2180 alloc_slab_page mm/slub.c:1775 [inline] allocate_slab+0x2eb/0x430 mm/slub.c:1912 new_slab mm/slub.c:1975 [inline] ___slab_alloc+0xb1c/0xf80 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc_trace+0x2db/0x310 mm/slub.c:3245 kmalloc include/linux/slab.h:591 [inline] kzalloc include/linux/slab.h:721 [inline] blk_mq_alloc_ctxs block/blk-mq.c:3087 [inline] blk_mq_init_allocated_queue+0xfd/0x1250 block/blk-mq.c:3304 blk_mq_init_queue_data block/blk-mq.c:3148 [inline] blk_mq_init_queue+0x75/0xd0 block/blk-mq.c:3158 scsi_alloc_sdev+0x852/0xca0 drivers/scsi/scsi_scan.c:319 scsi_probe_and_add_lun+0x1bc3/0x2db0 drivers/scsi/scsi_scan.c:1156 __scsi_scan_target+0x21d/0xb20 drivers/scsi/scsi_scan.c:1637 scsi_scan_channel drivers/scsi/scsi_scan.c:1725 [inline] scsi_scan_channel+0x148/0x1e0 drivers/scsi/scsi_scan.c:1701 scsi_scan_host_selected+0x28f/0x350 drivers/scsi/scsi_scan.c:1754 do_scsi_scan_host+0x1e8/0x260 drivers/scsi/scsi_scan.c:1893 scsi_scan_host drivers/scsi/scsi_scan.c:1923 [inline] scsi_scan_host+0x377/0x430 drivers/scsi/scsi_scan.c:1911 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare+0x34e/0x730 mm/page_alloc.c:1391 free_unref_page_prepare mm/page_alloc.c:3317 [inline] free_unref_page+0x19/0x4b0 mm/page_alloc.c:3396 __vunmap+0x75a/0xb00 mm/vmalloc.c:2621 free_work+0x58/0x70 mm/vmalloc.c:95 process_one_work+0x8d5/0x1260 kernel/workqueue.c:2310 worker_thread+0x552/0xf40 kernel/workqueue.c:2457 kthread+0x327/0x3e0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300 Memory state around the buggy address: ffff88810cbbd680: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc ffff88810cbbd700: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc >ffff88810cbbd780: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ^ ffff88810cbbd800: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff88810cbbd880: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ==================================================================