ci starts bisection 2024-03-11 18:10:55.593761765 +0000 UTC m=+203371.890950911
bisecting fixing commit since 7a396820222d6d4c02057f41658b162bdcdadd0e
building syzkaller on 9bd8dcda8c7c494d59bd3132a668f4784ea835c6
ensuring issue is reproducible on original commit 7a396820222d6d4c02057f41658b162bdcdadd0e
testing commit 7a396820222d6d4c02057f41658b162bdcdadd0e gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: bdc521ae63999c4b8d886b1c4d6b15dcec971c2ec01105295a7a80aa37c330fe
run #0: crashed: INFO: task hung in blk_trace_setup
run #1: crashed: INFO: task hung in blk_trace_setup
run #2: crashed: INFO: task hung in blk_trace_setup
run #3: crashed: INFO: task hung in blk_trace_setup
run #4: crashed: INFO: task hung in blk_trace_setup
run #5: crashed: INFO: task hung in blk_trace_setup
run #6: crashed: INFO: task hung in blk_trace_setup
run #7: crashed: INFO: task hung in blk_trace_setup
run #8: crashed: INFO: task hung in blk_trace_setup
run #9: crashed: INFO: task hung in blk_trace_setup
run #10: crashed: INFO: task hung in blk_trace_setup
run #11: crashed: INFO: task hung in blk_trace_setup
run #12: crashed: INFO: task hung in blk_trace_setup
run #13: crashed: INFO: task hung in blk_trace_remove
run #14: crashed: INFO: task hung in blk_trace_setup
run #15: crashed: INFO: task hung in blk_trace_setup
run #16: crashed: INFO: task hung in blk_trace_setup
run #17: crashed: INFO: task hung in blk_trace_setup
run #18: crashed: INFO: task hung in blk_trace_setup
run #19: crashed: INFO: task hung in blk_trace_setup
representative crash: INFO: task hung in blk_trace_setup, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing commit 7a396820222d6d4c02057f41658b162bdcdadd0e gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 3c4db31b2d450f9eedf5d23a3bb3366ff604369ec41af90c303e5be571067167
run #0: crashed: INFO: task hung in blk_trace_remove
run #1: crashed: INFO: task hung in blk_trace_remove
run #2: crashed: INFO: task hung in blk_trace_remove
run #3: crashed: INFO: task hung in blk_trace_remove
run #4: crashed: INFO: task hung in blk_trace_remove
run #5: crashed: INFO: task hung in blk_trace_remove
run #6: crashed: INFO: task hung in blk_trace_setup
run #7: crashed: INFO: task hung in blk_trace_setup
run #8: crashed: INFO: task hung in blk_trace_remove
run #9: crashed: INFO: task hung in blk_trace_setup
representative crash: INFO: task hung in blk_trace_remove, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
kconfig minimization: base=3937 full=7685 leaves diff=2015
split chunks (needed=false): <2015>
split chunk #0 of len 2015 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit 7a396820222d6d4c02057f41658b162bdcdadd0e gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 2706915db806ba58d54dc5d79cc9261ff962cd110f027336f80154720f7e3400
run #0: crashed: INFO: task hung in blk_trace_setup
run #1: crashed: INFO: task hung in blk_trace_setup
run #2: crashed: INFO: task hung in blk_trace_remove
run #3: crashed: INFO: task hung in blk_trace_setup
run #4: crashed: INFO: task hung in blk_trace_setup
run #5: crashed: INFO: task hung in blk_trace_remove
run #6: crashed: INFO: task hung in blk_trace_setup
run #7: crashed: INFO: task hung in blk_trace_setup
run #8: crashed: INFO: task hung in blk_trace_remove
run #9: crashed: INFO: task hung in blk_trace_setup
representative crash: INFO: task hung in blk_trace_setup, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 7a396820222d6d4c02057f41658b162bdcdadd0e gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: dadfa47c3063166efb7f77e398f1586dc2e3b05aed02d09424f9be034fad9df6
run #0: crashed: INFO: task hung in blk_trace_remove
run #1: crashed: INFO: task hung in blk_trace_remove
run #2: crashed: INFO: task hung in blk_trace_setup
run #3: crashed: INFO: task hung in blk_trace_remove
run #4: crashed: INFO: task hung in blk_trace_remove
run #5: crashed: INFO: task hung in blk_trace_remove
run #6: crashed: INFO: task hung in blk_trace_setup
run #7: crashed: INFO: task hung in blk_trace_remove
run #8: crashed: INFO: task hung in blk_trace_setup
run #9: crashed: INFO: task hung in blk_trace_remove
representative crash: INFO: task hung in blk_trace_remove, types: [HANG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
testing commit 7a396820222d6d4c02057f41658b162bdcdadd0e gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: e2c815a81b7ca76abeef0e70c0f71943a365ec2794c5215cc64d83ccedb95909
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 7a396820222d6d4c02057f41658b162bdcdadd0e gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 21447031f04f14a59b92dde317f230812cddda1f1b6bcae5edb2155d2e071c25
run #0: crashed: INFO: task hung in blk_trace_setup
run #1: crashed: INFO: task hung in blk_trace_remove
run #2: crashed: INFO: task hung in blk_trace_remove
run #3: crashed: INFO: task hung in blk_trace_remove
run #4: crashed: INFO: task hung in blk_trace_setup
run #5: crashed: INFO: task hung in blk_trace_setup
run #6: crashed: INFO: task hung in blk_trace_remove
run #7: crashed: INFO: task hung in blk_trace_remove
run #8: crashed: INFO: task hung in blk_trace_remove
run #9: OK
representative crash: INFO: task hung in blk_trace_setup, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit 7a396820222d6d4c02057f41658b162bdcdadd0e gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: e412cf3413c84e5485f741f08db5e2c37c95d0b02481aafb50700b0924b678ef
run #0: crashed: INFO: task hung in blk_trace_setup
run #1: crashed: INFO: task hung in blk_trace_setup
run #2: crashed: INFO: task hung in blk_trace_setup
run #3: crashed: INFO: task hung in blk_trace_remove
run #4: crashed: INFO: task hung in blk_trace_remove
run #5: crashed: INFO: task hung in blk_trace_remove
run #6: crashed: INFO: task hung in blk_trace_setup
run #7: crashed: INFO: task hung in blk_trace_setup
run #8: crashed: INFO: task hung in blk_trace_remove
run #9: crashed: INFO: task hung in blk_trace_remove
representative crash: INFO: task hung in blk_trace_setup, types: [HANG]
the chunk can be dropped
minimized to 403 configs; suspects: [AX25 BRIDGE BRIDGE_NETFILTER CAN CC_IS_GCC CFG80211 CHECKPOINT_RESTORE DVB_CORE FB_CORE 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_FTP IP_VS_IPV6 IP_VS_LBLC IP_VS_LBLCR IP_VS_LC IP_VS_MH IP_VS_NFCT IP_VS_NQ IP_VS_OVF IP_VS_PE_SIP IP_VS_PROTO_AH IP_VS_PROTO_AH_ESP IP_VS_PROTO_ESP IP_VS_PROTO_SCTP IP_VS_PROTO_TCP 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_COMMON KVM_COMPAT KVM_GENERIC_DIRTYLOG_READ_PROTECT KVM_GENERIC_HARDWARE_ENABLING KVM_GENERIC_MMU_NOTIFIER KVM_HYPERV KVM_MMIO KVM_PROVE_MMU KVM_VFIO KVM_XEN KVM_XFER_TO_GUEST_WORK L2TP L2TP_ETH L2TP_IP L2TP_V3 LAPB LAPBETHER LDM_PARTITION LEDS_TRIGGER_AUDIO LEGACY_PTYS LIBCRC32C LIBNVDIMM LINEAR_RANGES LLC LLC2 LOGIG940_FF LOGIRUMBLEPAD2_FF LOGO LOGO_LINUX_MONO LOGO_LINUX_VGA16 LPC_ICH LRU_GEN LRU_GEN_ENABLED LRU_GEN_WALKS_MMU 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 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_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_TABLES NF_TABLES_BRIDGE NF_TABLES_INET NF_TABLES_IPV4 NF_TABLES_IPV6 NF_TABLES_NETDEV PARTITION_ADVANCED PSAMPLE RC_CORE RC_DEVICES RFKILL SPI USB_GADGET USB_MUSB_HDRC VIDEO_DEV WAN WATCH_QUEUE WIRELESS WLAN WWAN X25 X86_X32_ABI]
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
testing current HEAD e8f897f4afef0031fe618a8e94127a0934896aba
testing commit e8f897f4afef0031fe618a8e94127a0934896aba gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: a2d2a19bbfdd90dabbd4d9e5212cf5cbb9e1f040ce3d3db3671730cd976a813b
run #0: crashed: INFO: task hung in blk_trace_setup
run #1: crashed: INFO: task hung in blk_trace_setup
run #2: crashed: INFO: task hung in blk_trace_remove
run #3: crashed: INFO: task hung in blk_trace_remove
run #4: crashed: INFO: task hung in blk_trace_setup
run #5: crashed: INFO: task hung in blk_trace_remove
run #6: crashed: INFO: task hung in blk_trace_remove
run #7: crashed: INFO: task hung in blk_trace_remove
run #8: crashed: INFO: task hung in blk_trace_remove
run #9: crashed: INFO: task hung in blk_trace_setup
representative crash: INFO: task hung in blk_trace_setup, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 3h54m4.149952917s (build: 2h36m26.396040733s, test: 1h11m55.218672796s)
crash still not fixed or there were kernel test errors
commit msg: Linux 6.8
crash: INFO: task hung in blk_trace_setup
INFO: task syz-executor.2:9319 blocked for more than 143 seconds.
Not tainted 6.8.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:13648 pid:9319 tgid:9318 ppid:7966 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x632/0xa00 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xab/0x110 kernel/sched/core.c:6817
schedule_preempt_disabled+0x32/0x60 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x449/0x970 kernel/locking/mutex.c:752
blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
sg_ioctl_common drivers/scsi/sg.c:1118 [inline]
sg_ioctl+0x5c5/0x1320 drivers/scsi/sg.c:1160
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl+0xbb/0x130 fs/ioctl.c:857
do_syscall_64+0x94/0x1a0
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fb888e5eda9
RSP: 002b:00007fb8889e10c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb888f8df80 RCX: 00007fb888e5eda9
RDX: 0000000020000040 RSI: 00000000c0481273 RDI: 0000000000000003
RBP: 00007fb888eab47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007fb888f8df80 R15: 00007ffcfbc3e008
INFO: task syz-executor.2:9320 blocked for more than 143 seconds.
Not tainted 6.8.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:15088 pid:9320 tgid:9318 ppid:7966 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x632/0xa00 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xab/0x110 kernel/sched/core.c:6817
schedule_preempt_disabled+0x32/0x60 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x449/0x970 kernel/locking/mutex.c:752
blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
sg_ioctl_common drivers/scsi/sg.c:1126 [inline]
sg_ioctl+0x29d/0x1320 drivers/scsi/sg.c:1160
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl+0xbb/0x130 fs/ioctl.c:857
do_syscall_64+0x94/0x1a0
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fb888e5eda9
RSP: 002b:00007fb8889c00c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb888f8e050 RCX: 00007fb888e5eda9
RDX: 0000000000000000 RSI: 0000000000001276 RDI: 0000000000000003
RBP: 00007fb888eab47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fb888f8e050 R15: 00007ffcfbc3e008
INFO: task syz-executor.4:9614 blocked for more than 143 seconds.
Not tainted 6.8.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:13648 pid:9614 tgid:9613 ppid:8695 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x632/0xa00 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xab/0x110 kernel/sched/core.c:6817
schedule_preempt_disabled+0x32/0x60 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x449/0x970 kernel/locking/mutex.c:752
blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
sg_ioctl_common drivers/scsi/sg.c:1118 [inline]
sg_ioctl+0x5c5/0x1320 drivers/scsi/sg.c:1160
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl+0xbb/0x130 fs/ioctl.c:857
do_syscall_64+0x94/0x1a0
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7faa50362da9
RSP: 002b:00007faa4fee50c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007faa50491f80 RCX: 00007faa50362da9
RDX: 0000000020000040 RSI: 00000000c0481273 RDI: 0000000000000003
RBP: 00007faa503af47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007faa50491f80 R15: 00007ffc9fbfbe98
INFO: task syz-executor.4:9615 blocked for more than 143 seconds.
Not tainted 6.8.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:15088 pid:9615 tgid:9613 ppid:8695 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x632/0xa00 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xab/0x110 kernel/sched/core.c:6817
schedule_preempt_disabled+0x32/0x60 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x449/0x970 kernel/locking/mutex.c:752
blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
sg_ioctl_common drivers/scsi/sg.c:1126 [inline]
sg_ioctl+0x29d/0x1320 drivers/scsi/sg.c:1160
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl+0xbb/0x130 fs/ioctl.c:857
do_syscall_64+0x94/0x1a0
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7faa50362da9
RSP: 002b:00007faa4fec40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007faa50492050 RCX: 00007faa50362da9
RDX: 0000000000000000 RSI: 0000000000001276 RDI: 0000000000000003
RBP: 00007faa503af47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007faa50492050 R15: 00007ffc9fbfbe98
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff83bacef0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff83bacef0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff83bacef0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x30/0x100 kernel/locking/lockdep.c:6614
2 locks held by getty/1781:
#0: ffff888100e8e0a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x50 drivers/tty/tty_ldisc.c:243
#1: ffffc900030272f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x34d/0xf50 drivers/tty/n_tty.c:2201
3 locks held by kworker/1:3/1946:
3 locks held by syz-executor.5/9261:
1 lock held by syz-executor.2/9319:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.2/9320:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.4/9614:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.4/9615:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.3/9997:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.3/9998:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.1/10379:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.1/10380:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.0/11090:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.0/11098:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.2/11508:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.2/11520:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.5/11602:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.5/11609:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.4/11930:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.4/11931:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.3/12912:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.3/12914:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.1/12972:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.1/12977:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.0/13628:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.0/13638:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.2/13779:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.2/13786:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.5/13852:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.5/13853:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.4/14241:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.4/14242:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.3/14774:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.3/14780:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.1/15022:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.1/15029:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.0/15602:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.0/15609:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.5/16383:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.5/16392:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.2/16395:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.2/16403:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.4/16550:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.4/16551:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.3/16934:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.3/16935:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.1/17317:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.1/17318:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
1 lock held by syz-executor.0/17699:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_setup+0x48/0x170 kernel/trace/blktrace.c:648
1 lock held by syz-executor.0/17700:
#0: ffff88810c6907b8 (&q->debugfs_mutex){....}-{3:3}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xf4/0x180 lib/dump_stack.c:106
nmi_cpu_backtrace+0x234/0x250 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x102/0x220 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0x8b9/0x8f0 kernel/hung_task.c:379
kthread+0x113/0x140 kernel/kthread.c:388
ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 9261 Comm: syz-executor.5 Not tainted 6.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:PagePoisoned include/linux/page-flags.h:298 [inline]
RIP: 0010:PageHead include/linux/page-flags.h:790 [inline]
RIP: 0010:__free_pages+0xc/0xf0 mm/page_alloc.c:4652
Code: 6a af 8c 01 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 53 48 89 fb 48 8b 07 <48> 83 f8 ff 0f 84 86 00 00 00 89 f5 31 c0 48 f7 03 40 00 00 00 74
RSP: 0018:ffffc90001a1bd68 EFLAGS: 00000246
RAX: 0200000000000000 RBX: ffffea0007f01f80 RCX: ffff88818cabd1c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0007f01f80
RBP: 00000000000461e5 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000003642 R11: 0000000000008000 R12: 00000000fffffff8
R13: ffff88821a436000 R14: ffff88819a2f8e00 R15: ffff888174a10a00
FS: 00007f7ae0bb76c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe28fbb5d58 CR3: 000000013ddde000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
relay_destroy_buf+0x4c/0x120 kernel/relay.c:201
relay_remove_buf kernel/relay.c:221 [inline]
kref_put include/linux/kref.h:65 [inline]
relay_close_buf kernel/relay.c:430 [inline]
relay_close+0x1a6/0x330 kernel/relay.c:766
blk_trace_free+0x19/0x80 kernel/trace/blktrace.c:316
blk_trace_cleanup kernel/trace/blktrace.c:384 [inline]
__blk_trace_remove+0xb5/0xd0 kernel/trace/blktrace.c:397
blk_trace_remove+0x28/0x40 kernel/trace/blktrace.c:407
sg_ioctl_common drivers/scsi/sg.c:1126 [inline]
sg_ioctl+0x29d/0x1320 drivers/scsi/sg.c:1160
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl+0xbb/0x130 fs/ioctl.c:857
do_syscall_64+0x94/0x1a0
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f7ae1055da9
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:00007f7ae0bb70c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7ae1185050 RCX: 00007f7ae1055da9
RDX: 0000000000000000 RSI: 0000000000001276 RDI: 0000000000000003
RBP: 00007f7ae10a247a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f7ae1185050 R15: 00007ffea200e1b8