ci2 starts bisection 2024-09-09 00:56:58.959220039 +0000 UTC m=+207932.623075616
bisecting fixing commit since b95c01af211304429c11b8c8bdf791ab11f7f395
building syzkaller on 7a239ce75709b01083336e0f2f44aa8a01734543
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: INFO: rcu detected stall in sendmsg
run #1: crashed: INFO: rcu detected stall in sock_setsockopt
run #2: crashed: INFO: rcu detected stall in sock_setsockopt
run #3: crashed: INFO: rcu detected stall in sock_setsockopt
run #4: crashed: INFO: rcu detected stall in sendmsg
run #5: crashed: INFO: rcu detected stall in sendmsg
run #6: crashed: INFO: rcu detected stall in sock_setsockopt
run #7: crashed: INFO: rcu detected stall in sendmsg
run #8: crashed: INFO: rcu detected stall in sock_setsockopt
run #9: crashed: INFO: rcu detected stall in sock_setsockopt
run #10: crashed: INFO: rcu detected stall in sendmsg
run #11: crashed: INFO: rcu detected stall in sock_setsockopt
run #12: crashed: BUG: soft lockup in sendmsg
run #13: crashed: INFO: rcu detected stall in sock_setsockopt
run #14: crashed: INFO: rcu detected stall in sendmsg
run #15: crashed: INFO: rcu detected stall in sendmsg
run #16: crashed: INFO: rcu detected stall in sendmsg
run #17: crashed: INFO: rcu detected stall in sock_setsockopt
run #18: crashed: INFO: rcu detected stall in sock_setsockopt
run #19: crashed: INFO: rcu detected stall in sock_setsockopt
representative crash: INFO: rcu detected stall in sendmsg, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], 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: f51cf0cdeba31c0d33ed2f30bd4415e17338ddd0aa68dc96778ef4beb3a437f1
run #0: crashed: INFO: rcu detected stall in sendmsg
run #1: crashed: INFO: rcu detected stall in sendmsg
run #2: crashed: INFO: rcu detected stall in sock_setsockopt
run #3: crashed: INFO: rcu detected stall in sock_setsockopt
run #4: crashed: INFO: rcu detected stall in sendmsg
run #5: crashed: INFO: rcu detected stall in sock_setsockopt
run #6: crashed: INFO: rcu detected stall in sendmsg
run #7: crashed: INFO: rcu detected stall in sock_setsockopt
run #8: crashed: INFO: rcu detected stall in sendmsg
run #9: crashed: INFO: rcu detected stall in sendmsg
representative crash: INFO: rcu detected stall in sendmsg, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
kconfig minimization: base=3706 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 LEAK UBSAN BUG KASAN], 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: 66d29f21c673a76e0b774efc7817bfb203780c648bbd4b028c48fcc8b165b865
run #0: crashed: INFO: rcu detected stall in sock_setsockopt
run #1: crashed: INFO: rcu detected stall in sendmsg
run #2: crashed: INFO: rcu detected stall in sock_setsockopt
run #3: crashed: INFO: rcu detected stall in sock_setsockopt
run #4: crashed: INFO: rcu detected stall in sock_setsockopt
run #5: crashed: INFO: rcu detected stall in sendmsg
run #6: crashed: INFO: rcu detected stall in sendmsg
run #7: crashed: INFO: rcu detected stall in sendmsg
run #8: crashed: INFO: rcu detected stall in sendmsg
run #9: crashed: INFO: rcu detected stall in sendmsg
representative crash: INFO: rcu detected stall in sock_setsockopt, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], 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: 757fb7398539f8dab4c6eb524f7b35f435c59ec235ab71731bd2a9e431199cf8
run #0: crashed: INFO: rcu detected stall in sock_setsockopt
run #1: crashed: INFO: rcu detected stall in sock_setsockopt
run #2: crashed: INFO: rcu detected stall in sock_setsockopt
run #3: crashed: INFO: rcu detected stall in sendmsg
run #4: crashed: INFO: rcu detected stall in sendmsg
run #5: crashed: INFO: rcu detected stall in sock_setsockopt
run #6: crashed: INFO: rcu detected stall in sock_setsockopt
run #7: crashed: INFO: rcu detected stall in sock_setsockopt
run #8: crashed: INFO: rcu detected stall in sendmsg
run #9: crashed: INFO: rcu detected stall in sendmsg
representative crash: INFO: rcu detected stall in sock_setsockopt, types: [HANG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], 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: c17b4cc64603aafd0a3739296ee8bca14d6b635024a60db274d45462db0d397a
run #0: crashed: INFO: rcu detected stall in sendmsg
run #1: crashed: INFO: rcu detected stall in sock_setsockopt
run #2: crashed: INFO: rcu detected stall in sendmsg
run #3: crashed: INFO: rcu detected stall in sendmsg
run #4: crashed: INFO: rcu detected stall in sock_setsockopt
run #5: crashed: INFO: rcu detected stall in sendmsg
run #6: crashed: INFO: rcu detected stall in sock_setsockopt
run #7: crashed: INFO: rcu detected stall in sendmsg
run #8: crashed: INFO: rcu detected stall in sendmsg
run #9: crashed: INFO: rcu detected stall in sock_setsockopt
representative crash: INFO: rcu detected stall in sendmsg, types: [HANG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], 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: ba3811919b0afe86ccd43035412c9c461cf1a7babc750d09848ef4c4ce56faf6
all runs: OK
false negative chance: 0.000
testing without sub-chunk 5/5
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN 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: a5710398dedfeee475e2228341a22fe913bcc7c4acaf61c9e698a84a5261a132
run #0: crashed: INFO: rcu detected stall in sendmsg
run #1: crashed: INFO: rcu detected stall in sock_setsockopt
run #2: crashed: INFO: rcu detected stall in sock_setsockopt
run #3: crashed: INFO: rcu detected stall in sock_setsockopt
run #4: crashed: INFO: rcu detected stall in sock_setsockopt
run #5: crashed: INFO: rcu detected stall in sock_setsockopt
run #6: crashed: INFO: rcu detected stall in sendmsg
run #7: crashed: INFO: rcu detected stall in sock_setsockopt
run #8: crashed: INFO: rcu detected stall in sendmsg
run #9: crashed: INFO: rcu detected stall in sock_setsockopt
representative crash: INFO: rcu detected stall in sendmsg, types: [HANG]
the chunk can be dropped
minimized to 396 configs; suspects: [AF_RXRPC ARCH_ENABLE_MEMORY_HOTREMOVE ASYMMETRIC_TPM_KEY_SUBTYPE ATM AX25 CFG80211 CMA DAX DLM DVB_CORE ENCRYPTED_KEYS EXTCON GENEVE GPIOLIB HAMRADIO HID_SENSOR_HUB HID_SMARTJOYPLUS HID_THRUSTMASTER IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_IPOIB INFINIBAND_USER_ACCESS INFINIBAND_VIRT_DMA INPUT_TABLET INPUT_TOUCHSCREEN IP_SCTP L2TP LIBCRC32C LIBNVDIMM MEDIA_COMMON_OPTIONS MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MFD_RETU MMC MTD MTD_UBI NETFILTER_CONNCOUNT NET_IPGRE NET_IPGRE_DEMUX NFS_V4_1 NLS_CODEPAGE_857 NLS_CODEPAGE_860 NLS_CODEPAGE_861 NLS_CODEPAGE_862 NLS_CODEPAGE_863 NLS_CODEPAGE_864 NLS_CODEPAGE_865 NLS_CODEPAGE_866 NLS_CODEPAGE_869 NLS_CODEPAGE_874 NLS_CODEPAGE_932 NLS_CODEPAGE_936 NLS_CODEPAGE_949 NLS_CODEPAGE_950 NLS_ISO8859_13 NLS_ISO8859_14 NLS_ISO8859_15 NLS_ISO8859_2 NLS_ISO8859_3 NLS_ISO8859_4 NLS_ISO8859_5 NLS_ISO8859_6 NLS_ISO8859_7 NLS_ISO8859_8 NLS_ISO8859_9 NLS_KOI8_R NLS_KOI8_U NLS_MAC_CELTIC NLS_MAC_CENTEURO NLS_MAC_CROATIAN NLS_MAC_CYRILLIC NLS_MAC_GAELIC NLS_MAC_GREEK NLS_MAC_ICELAND NLS_MAC_INUIT NLS_MAC_ROMAN NLS_MAC_ROMANIAN NLS_MAC_TURKISH NOP_USB_XCEIV NOZOMI NTFS3_FS NTFS3_FS_POSIX_ACL NTFS3_LZX_XPRESS NTFS_FS NTFS_RW NULL_TTY NUMA_BALANCING NUMA_BALANCING_DEFAULT_ENABLED NUMA_EMU NUMA_KEEP_MEMINFO NVDIMM_DAX NVDIMM_KEYS NVDIMM_PFN NVME_CORE NVME_FABRICS NVME_FC NVME_MULTIPATH NVME_RDMA NVME_TARGET NVME_TARGET_FC NVME_TARGET_FCLOOP NVME_TARGET_LOOP NVME_TARGET_RDMA NVME_TARGET_TCP NVME_TCP N_GSM N_HDLC OCFS2_DEBUG_FS OCFS2_FS OCFS2_FS_O2CB OCFS2_FS_STATS OCFS2_FS_USERSPACE_CLUSTER OF_GPIO OF_PMEM OMFS_FS OPENVSWITCH OPENVSWITCH_GENEVE OPENVSWITCH_GRE OPENVSWITCH_VXLAN ORANGEFS_FS OSF_PARTITION OVERLAY_FS OVERLAY_FS_INDEX OVERLAY_FS_REDIRECT_ALWAYS_FOLLOW OVERLAY_FS_REDIRECT_DIR PACKET_DIAG PADATA PAGE_IDLE_FLAG PAGE_REPORTING PAHOLE_HAS_SPLIT_BTF PARPORT PARPORT_NOT_PC PARTITION_ADVANCED PCCARD PCCARD_NONSTATIC PCIEAER PCI_ENDPOINT PCI_IOV PCMCIA PCMCIA_LOAD_CIS PERCPU_STATS PERSISTENT_KEYRINGS PHONET PHYLINK PHY_CPCAP_USB PHY_QCOM_USB_HS PHY_QCOM_USB_HSIC PHY_SAMSUNG_USB2 PHY_TUSB1210 PKCS7_TEST_KEY PKCS8_PRIVATE_KEY_PARSER PNFS_BLOCK PNFS_FILE_LAYOUT PNFS_FLEXFILE_LAYOUT PPP PPPOATM PPPOE PPPOL2TP PPP_ASYNC PPP_BSDCOMP PPP_DEFLATE PPP_FILTER PPP_MPPE PPP_MULTILINK PPP_SYNC_TTY PPTP PREEMPT PREEMPT_DYNAMIC PREEMPT_NOTIFIERS PREEMPT_RCU PRISM2_USB PROC_CHILDREN PSI PSTORE PSTORE_842_COMPRESS PSTORE_COMPRESS PSTORE_DEFLATE_COMPRESS PSTORE_DEFLATE_COMPRESS_DEFAULT PSTORE_LZ4HC_COMPRESS PSTORE_LZ4_COMPRESS PSTORE_LZO_COMPRESS PSTORE_ZSTD_COMPRESS QCOM_QMI_HELPERS QNX4FS_FS QNX6FS_FS QRTR QRTR_TUN R8712U RADIO_ADAPTERS RADIO_SHARK RADIO_SHARK2 RADIO_TEA575X RAID6_PQ RAID_ATTRS RC_ATI_REMOTE RC_CORE RC_DEVICES RDMA_RXE RDMA_SIW RDS RDS_RDMA RDS_TCP READ_ONLY_THP_FOR_FS REALTEK_AUTOPM REED_SOLOMON REED_SOLOMON_DEC8 REGMAP REGMAP_I2C REGMAP_IRQ REGMAP_MMIO REGULATOR REGULATOR_TWL4030 REISERFS_FS REISERFS_FS_POSIX_ACL REISERFS_FS_SECURITY REISERFS_FS_XATTR REISERFS_PROC_INFO RESET_CONTROLLER RFKILL RFKILL_INPUT RFKILL_LEDS RMI4_2D_SENSOR RMI4_CORE RMI4_F03 RMI4_F03_SERIO RMI4_F11 RMI4_F12 RMI4_F30 ROMFS_BACKED_BY_BOTH ROMFS_FS ROMFS_ON_BLOCK ROMFS_ON_MTD ROSE RTC_DRV_HID_SENSOR_TIME RXKAD SCHED_CORE SCSI_FC_ATTRS SCSI_HPSA SCSI_ISCSI_ATTRS SCSI_LOGGING SCSI_NETLINK SCSI_SAS_ATA SCSI_SAS_ATTRS SCSI_SAS_LIBSAS SCSI_SCAN_ASYNC SCSI_SRP_ATTRS SCTP_COOKIE_HMAC_MD5 SCTP_COOKIE_HMAC_SHA1 SCTP_DEFAULT_COOKIE_HMAC_MD5 SECONDARY_TRUSTED_KEYRING SECURITY_INFINIBAND SECURITY_NETWORK_XFRM SERIAL_DEV_BUS SERIAL_DEV_CTRL_TTYPORT SERIAL_MCTRL_GPIO SGI_PARTITION SIGNATURE SIGNED_PE_FILE_VERIFICATION SLHC SLIP SLIP_COMPRESSED SLIP_MODE_SLIP6 SLIP_SMART SMARTJOYPLUS_FF SMBFS_COMMON SMC SMC_DIAG SMSC_PHY SMS_SIANO_MDTV SMS_SIANO_RC SMS_USB_DRV SND SND_ALOOP SND_BCD2000 SND_CTL_LED SND_CTL_VALIDATION SND_DEBUG SND_DMA_SGBUF SND_DRIVERS SND_DUMMY SND_DYNAMIC_MINORS SND_HDA SND_HDA_CODEC_ANALOG SND_HDA_CODEC_CA0110 SND_HDA_CODEC_CA0132 SND_HDA_CODEC_CIRRUS SND_HDA_CODEC_CMEDIA SND_HDA_CODEC_CONEXANT SND_HDA_CODEC_HDMI SND_HDA_CODEC_REALTEK SND_HDA_CODEC_SI3054 SND_HDA_CODEC_SIGMATEL SND_HDA_CODEC_VIA SND_HDA_COMPONENT SND_HDA_CORE SND_HDA_GENERIC SND_HDA_GENERIC_LEDS SND_HDA_HWDEP SND_HDA_I915 SND_HDA_INPUT_BEEP SND_HDA_INTEL SND_HDA_PATCH_LOADER SND_HDA_RECONFIG SND_HRTIMER SND_HWDEP SND_INTEL_DSP_CONFIG SND_INTEL_NHLT SND_INTEL_SOUNDWIRE_ACPI SND_JACK SND_JACK_INPUT_DEV SND_MIXER_OSS SND_OSSEMUL SND_PCI SND_PCM SND_PCMCIA SND_PCM_OSS SND_PCM_OSS_PLUGINS SND_PCM_TIMER SND_PCM_XRUN_DEBUG SND_PROC_FS SND_RAWMIDI SND_SEQUENCER SND_SEQUENCER_OSS SND_SEQ_DEVICE SND_SEQ_DUMMY SND_SEQ_HRTIMER_DEFAULT SND_SEQ_MIDI SND_SEQ_MIDI_EVENT SND_SEQ_VIRMIDI SND_SUPPORT_OLD_API SND_TIMER SND_USB SND_USB_6FIRE SND_USB_AUDIO SND_USB_AUDIO_USE_MEDIA_CONTROLLER SND_USB_CAIAQ SND_USB_CAIAQ_INPUT SND_USB_HIFACE SND_USB_LINE6 SND_USB_POD SND_USB_PODHD SND_USB_TONEPORT SND_USB_UA101 SND_USB_US122L SND_USB_USX2Y SND_USB_VARIAX SND_VERBOSE_PROCFS SND_VIRMIDI SND_VIRTIO SND_VMASTER SND_X86 SOCK_CGROUP_DATA SOCK_VALIDATE_XMIT SOLARIS_X86_PARTITION SONY_FF SOUND SOUND_OSS_CORE SOUND_OSS_CORE_PRECLAIM SPECULATION_MITIGATIONS SPI SPI_DLN2 SPI_DYNAMIC SPI_MASTER SQUASHFS SQUASHFS_4K_DEVBLK_SIZE SQUASHFS_DECOMP_SINGLE SQUASHFS_FILE_DIRECT SQUASHFS_LZ4 SQUASHFS_LZO SQUASHFS_XATTR SQUASHFS_XZ SQUASHFS_ZLIB SQUASHFS_ZSTD SSB SSB_PCIHOST_POSSIBLE SSB_PCMCIAHOST_POSSIBLE SSB_SDIOHOST_POSSIBLE STAGING STP STREAM_PARSER SUNRPC_BACKCHANNEL SUN_PARTITION SW_SYNC SYSV68_PARTITION SYSV_FS TABLET_USB_ACECAD TABLET_USB_AIPTEK TABLET_USB_HANWANG TABLET_USB_KBTAB TABLET_USB_PEGASUS TAHVO_USB TAHVO_USB_HOST_BY_DEFAULT TARGET_CORE TASKS_RCU TASKS_RCU_GENERIC TASKS_TRACE_RCU TCG_CRB TCG_TIS TCG_TIS_CORE TCG_TPM TCP_CONG_BBR TCP_CONG_BIC TCP_CONG_CDG TCP_CONG_DCTCP TCP_CONG_HSTCP TCP_CONG_HTCP TCP_CONG_HYBLA TCP_CONG_ILLINOIS TCP_CONG_LP TCP_CONG_NV TCP_CONG_SCALABLE TCP_CONG_VEGAS TCP_CONG_VENO TCP_CONG_WESTWOOD TCP_CONG_YEAH TEXTSEARCH TEXTSEARCH_BM TEXTSEARCH_FSM TEXTSEARCH_KMP THERMAL_NETLINK THP_SWAP THRUSTMASTER_FF TIPC TIPC_CRYPTO TIPC_DIAG TIPC_MEDIA_IB TIPC_MEDIA_UDP TLS TLS_TOE TOUCHSCREEN_SUR40 TOUCHSCREEN_USB_3M TOUCHSCREEN_USB_COMPOSITE TOUCHSCREEN_USB_DMC_TSC10 TOUCHSCREEN_USB_E2I TOUCHSCREEN_USB_EASYTOUCH TOUCHSCREEN_USB_EGALAX TOUCHSCREEN_USB_ELO TOUCHSCREEN_USB_ETT_TC45USB TOUCHSCREEN_USB_ETURBO TOUCHSCREEN_USB_GENERAL_TOUCH TOUCHSCREEN_USB_GOTOP TOUCHSCREEN_USB_GUNZE TOUCHSCREEN_USB_IDEALTEK TOUCHSCREEN_USB_IRTOUCH TOUCHSCREEN_USB_ITM TOUCHSCREEN_USB_JASTEC TOUCHSCREEN_USB_NEXIO TOUCHSCREEN_USB_PANJIT TOUCHSCREEN_USB_ZYTRONIC TPM_KEY_PARSER TRANSPARENT_HUGEPAGE TRANSPARENT_HUGEPAGE_MADVISE TRUSTED_KEYS TTPCI_EEPROM TTY_PRINTK TUN_VNET_CROSS_LE TWL4030_CORE TYPEC TYPEC_FUSB302 TYPEC_TCPCI TYPEC_TCPM TYPEC_TPS6598X TYPEC_UCSI UBIFS_ATIME_SUPPORT UBIFS_FS UBIFS_FS_ADVANCED_COMPR UBIFS_FS_LZO UBIFS_FS_SECURITY UBIFS_FS_XATTR UBIFS_FS_ZLIB UBIFS_FS_ZSTD UCSI_ACPI UDF_FS UDMABUF UFS_FS UFS_FS_WRITE UHID ULTRIX_PARTITION UNICODE UNIXWARE_DISKLABEL UNIX_DIAG USB4 USB4_NET USBIP_CORE USBIP_HOST USBIP_VHCI_HCD USBIP_VUDC USBPCWATCHDOG USB_ACM USB_ADUTUX USB_AIRSPY USB_ALI_M5632 USB_AN2720 USB_APPLEDISPLAY USB_ARMLINUX USB_BDC_UDC USB_BELKIN USB_C67X00_HCD USB_CATC USB_CDC_PHONET USB_CHAOSKEY USB_CHIPIDEA USB_CHIPIDEA_GENERIC USB_CHIPIDEA_HOST USB_CHIPIDEA_IMX USB_CHIPIDEA_MSM USB_CHIPIDEA_PCI USB_CHIPIDEA_TEGRA USB_CHIPIDEA_UDC USB_CONFIGFS USB_CONFIGFS_ACM USB_CONFIGFS_ECM USB_CONFIGFS_ECM_SUBSET USB_CONFIGFS_EEM USB_CONFIGFS_F_FS USB_CONFIGFS_F_HID USB_CONFIGFS_F_LB_SS USB_CONFIGFS_F_MIDI USB_CONFIGFS_F_PRINTER USB_CONFIGFS_F_TCM USB_DWC2 USB_GADGET USB_MUSB_HDRC USB_NET_CDC_SUBSET USB_ROLE_SWITCH USB_STORAGE_REALTEK USB_ULPI_BUS USB_USBNET VIDEO_DEV VIDEO_V4L2 VXLAN WIRELESS WLAN ZONE_DEVICE]
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
testing current HEAD 14e468424d3edcf23167133d6ee2f3e3c6c5a022
testing commit 14e468424d3edcf23167133d6ee2f3e3c6c5a022 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 9b36795c132bbe04ab4b1eb4b2452314418babe9263b256233174afa27e44ed2
run #0: crashed: INFO: rcu detected stall in sendmsg
run #1: crashed: INFO: rcu detected stall in sock_setsockopt
run #2: crashed: INFO: rcu detected stall in sendmsg
run #3: crashed: INFO: rcu detected stall in sock_setsockopt
run #4: crashed: INFO: rcu detected stall in sock_setsockopt
run #5: crashed: INFO: rcu detected stall in sock_setsockopt
run #6: crashed: INFO: rcu detected stall in sock_setsockopt
run #7: crashed: INFO: rcu detected stall in sock_setsockopt
run #8: crashed: INFO: rcu detected stall in sock_setsockopt
run #9: crashed: INFO: rcu detected stall in sock_setsockopt
representative crash: INFO: rcu detected stall in sendmsg, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 2h21m14.111866343s (build: 1h5m21.976508915s, test: 1h13m57.019038537s)
crash still not fixed or there were kernel test errors
commit msg: Linux 5.15.166
crash: INFO: rcu detected stall in sendmsg
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (1 GPs behind) idle=d25/1/0x4000000000000000 softirq=3039/3074 fqs=0 
	(t=10000 jiffies g=485 q=553)
rcu: rcu_preempt kthread timer wakeup didn't happen for 9999 jiffies! g485 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=514
rcu: rcu_preempt kthread starved for 10000 jiffies! g485 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:I stack:14344 pid:   13 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5027 [inline]
 __schedule+0x378/0x13e0 kernel/sched/core.c:6373
 schedule+0x68/0xb0 kernel/sched/core.c:6456
 schedule_timeout+0xaf/0x140 kernel/time/timer.c:1914
 rcu_gp_fqs_loop+0xfd/0x370 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0x89/0xf0 kernel/rcu/tree.c:2145
 kthread+0x124/0x150 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1941 Comm: syz-executor.0 Not tainted 5.15.166-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__lock_acquire.constprop.0+0x259/0x3e0 kernel/locking/lockdep.c:5022
Code: f7 01 f2 c1 c0 04 31 f8 48 c1 e0 20 48 09 d0 49 89 85 58 0a 00 00 41 8b 85 60 0a 00 00 83 c0 01 83 f8 2f 41 89 85 60 0a 00 00 <0f> 87 ae b5 08 01 3b 05 eb 58 c2 02 41 bc 01 00 00 00 0f 87 59 01
RSP: 0018:ffffc900026cf618 EFLAGS: 00000097
RAX: 0000000000000003 RBX: 632c62a0b678db84 RCX: 00000000e8996e38
RDX: 000000006efdbf24 RSI: 00000000ba08aa9e RDI: 000000002e90c39a
RBP: ffff888101df5df8 R08: 0000000000020015 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000015
R13: ffff888101df5340 R14: 0000000000020000 R15: 0000000000000200
FS:  00007fbbdaa236c0(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0010b4000 CR3: 000000010973a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 lock_acquire kernel/locking/lockdep.c:5623 [inline]
 lock_acquire+0x93/0x150 kernel/locking/lockdep.c:5588
 rcu_lock_acquire include/linux/rcupdate.h:312 [inline]
 rcu_read_lock include/linux/rcupdate.h:739 [inline]
 net_generic include/net/netns/generic.h:44 [inline]
 tipc_sk_lookup+0x40/0x1e0 net/tipc/socket.c:2995
 tipc_sk_rcv+0xb7/0x8f0 net/tipc/socket.c:2492
 tipc_node_xmit+0xc3/0x410 net/tipc/node.c:1703
 tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
 tipc_node_distr_xmit+0xac/0xe0 net/tipc/node.c:1783
 tipc_sk_rcv+0x2e8/0x8f0 net/tipc/socket.c:2501
 tipc_node_xmit+0xc3/0x410 net/tipc/node.c:1703
 tipc_sk_push_backlog+0x94/0x190 net/tipc/socket.c:1316
 tipc_sk_conn_proto_rcv net/tipc/socket.c:1370 [inline]
 tipc_sk_proto_rcv net/tipc/socket.c:2158 [inline]
 tipc_sk_filter_rcv+0xd6c/0xed0 net/tipc/socket.c:2352
 tipc_sk_enqueue net/tipc/socket.c:2445 [inline]
 tipc_sk_rcv+0x405/0x8f0 net/tipc/socket.c:2497
 tipc_node_xmit+0xc3/0x410 net/tipc/node.c:1703
 tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
 tipc_node_distr_xmit+0xac/0xe0 net/tipc/node.c:1783
 tipc_sk_backlog_rcv+0x53/0x80 net/tipc/socket.c:2412
 sk_backlog_rcv include/net/sock.h:1059 [inline]
 __release_sock+0x54/0xd0 net/core/sock.c:2724
 release_sock+0x26/0xa0 net/core/sock.c:3265
 sock_setsockopt+0xb3/0xc90 net/core/sock.c:1378
 __sys_setsockopt+0xe8/0x100 net/socket.c:2194
 __do_sys_setsockopt net/socket.c:2209 [inline]
 __se_sys_setsockopt net/socket.c:2206 [inline]
 __x64_sys_setsockopt+0x1c/0x20 net/socket.c:2206
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x33/0x80 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fbbdaec2da9
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:00007fbbdaa230c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fbbdaff1050 RCX: 00007fbbdaec2da9
RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 00007fbbdaf0f47a R08: 0000000000000004 R09: 0000000000000000
R10: 0000000020000540 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007fbbdaff1050 R15: 00007ffc57a3fd08
 </TASK>
NMI backtrace for cpu 0
CPU: 0 PID: 1940 Comm: syz-executor.0 Not tainted 5.15.166-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x41/0x5e lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x32/0x80 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x91/0xb0 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
 rcu_dump_cpu_stacks+0xa5/0xd3 kernel/rcu/tree_stall.h:349
 print_cpu_stall kernel/rcu/tree_stall.h:633 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
 rcu_pending kernel/rcu/tree.c:3932 [inline]
 rcu_sched_clock_irq.cold+0x1ca/0x441 kernel/rcu/tree.c:2619
 update_process_times+0x87/0xc0 kernel/time/timer.c:1818
 tick_sched_handle+0x1d/0x50 kernel/time/tick-sched.c:254
 tick_sched_timer+0x5c/0x70 kernel/time/tick-sched.c:1473
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x138/0x330 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x109/0x230 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
 __sysvec_apic_timer_interrupt+0x63/0x130 arch/x86/kernel/apic/apic.c:1102
 sysvec_apic_timer_interrupt+0x65/0x90 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:90 [inline]
RIP: 0010:kvm_wait arch/x86/kernel/kvm.c:918 [inline]
RIP: 0010:kvm_wait+0x3e/0x40 arch/x86/kernel/kvm.c:900
Code: 0b fa 0f b6 07 40 38 f0 74 15 fb c3 0f b6 07 40 38 c6 75 f7 66 90 0f 00 2d fd e9 5b 01 f4 c3 66 90 0f 00 2d f2 e9 5b 01 fb f4 <c3> 90 8b 05 4a 40 02 02 83 f8 ff 74 06 85 c0 0f 95 c0 c3 e8 6a fa
RSP: 0018:ffffc900026c7c30 EFLAGS: 00000246
RAX: 0000000000000003 RBX: ffff88813bc2c780 RCX: 0000000000000008
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff8881065d9988
RBP: ffff8881065d9988 R08: ffff88823ffef140 R09: 0000000000000000
R10: ffff88813bc2c780 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000100 R15: 0000000000040000
 pv_wait arch/x86/include/asm/paravirt.h:597 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x279/0x2c0 kernel/locking/qspinlock.c:508
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock+0x99/0xa0 kernel/locking/spinlock_debug.c:115
 spin_lock_bh include/linux/spinlock.h:368 [inline]
 lock_sock_nested+0x36/0x60 net/core/sock.c:3253
 lock_sock include/net/sock.h:1676 [inline]
 tipc_sendstream+0x1e/0x50 net/tipc/socket.c:1549
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg+0x2e/0x40 net/socket.c:716
 ____sys_sendmsg+0x234/0x250 net/socket.c:2431
 ___sys_sendmsg+0x6e/0xb0 net/socket.c:2485
 __sys_sendmsg+0x54/0xa0 net/socket.c:2514
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x33/0x80 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fbbdaec2da9
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:00007fbbdaa440c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fbbdaff0f80 RCX: 00007fbbdaec2da9
RDX: 0000000000000000 RSI: 00000000200003c0 RDI: 0000000000000004
RBP: 00007fbbdaf0f47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007fbbdaff0f80 R15: 00007ffc57a3fd08
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1941 Comm: syz-executor.0 Not tainted 5.15.166-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__raw_callee_save___pv_queued_spin_unlock+0xc/0x12
Code: 56 57 41 50 41 51 41 52 41 53 e8 5f 05 00 00 41 5b 41 5a 41 59 41 58 5f 5e 5a 59 c3 66 90 52 b8 01 00 00 00 31 d2 f0 0f b0 17 <3c> 01 75 02 5a c3 56 0f b6 f0 e8 c5 ff ff ff 5e 5a c3 66 90 49 89
RSP: 0018:ffffc900026cf6e8 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffffc900026cf898 RCX: ffffc900026cf6cc
RDX: 0000000000000000 RSI: ffffc900026cf8c8 RDI: ffffc900026cf8b0
RBP: ffffc900026cf8b0 R08: 00000000000005c2 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881065d9900
R13: ffffc900026cf8b0 R14: 0000000071902784 R15: 000000000000001f
FS:  00007fbbdaa236c0(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0010b4000 CR3: 000000010973a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 pv_queued_spin_unlock arch/x86/include/asm/paravirt.h:590 [inline]
 queued_spin_unlock arch/x86/include/asm/qspinlock.h:56 [inline]
 do_raw_spin_unlock+0x50/0xa0 kernel/locking/spinlock_debug.c:141
 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:175 [inline]
 _raw_spin_unlock_bh+0x1a/0x30 kernel/locking/spinlock.c:210
 spin_unlock_bh include/linux/spinlock.h:408 [inline]
 tipc_skb_peek_port net/tipc/msg.h:1258 [inline]
 tipc_sk_rcv+0xab/0x8f0 net/tipc/socket.c:2491
 tipc_node_xmit+0xc3/0x410 net/tipc/node.c:1703
 tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
 tipc_node_distr_xmit+0xac/0xe0 net/tipc/node.c:1783
 tipc_sk_rcv+0x2e8/0x8f0 net/tipc/socket.c:2501
 tipc_node_xmit+0xc3/0x410 net/tipc/node.c:1703
 tipc_sk_push_backlog+0x94/0x190 net/tipc/socket.c:1316
 tipc_sk_conn_proto_rcv net/tipc/socket.c:1370 [inline]
 tipc_sk_proto_rcv net/tipc/socket.c:2158 [inline]
 tipc_sk_filter_rcv+0xd6c/0xed0 net/tipc/socket.c:2352
 tipc_sk_enqueue net/tipc/socket.c:2445 [inline]
 tipc_sk_rcv+0x405/0x8f0 net/tipc/socket.c:2497
 tipc_node_xmit+0xc3/0x410 net/tipc/node.c:1703
 tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
 tipc_node_distr_xmit+0xac/0xe0 net/tipc/node.c:1783
 tipc_sk_backlog_rcv+0x53/0x80 net/tipc/socket.c:2412
 sk_backlog_rcv include/net/sock.h:1059 [inline]
 __release_sock+0x54/0xd0 net/core/sock.c:2724
 release_sock+0x26/0xa0 net/core/sock.c:3265
 sock_setsockopt+0xb3/0xc90 net/core/sock.c:1378
 __sys_setsockopt+0xe8/0x100 net/socket.c:2194
 __do_sys_setsockopt net/socket.c:2209 [inline]
 __se_sys_setsockopt net/socket.c:2206 [inline]
 __x64_sys_setsockopt+0x1c/0x20 net/socket.c:2206
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x33/0x80 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fbbdaec2da9
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:00007fbbdaa230c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fbbdaff1050 RCX: 00007fbbdaec2da9
RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 00007fbbdaf0f47a R08: 0000000000000004 R09: 0000000000000000
R10: 0000000020000540 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007fbbdaff1050 R15: 00007ffc57a3fd08
 </TASK>