ci2 starts bisection 2024-04-08 23:20:47.977785508 +0000 UTC m=+39070.008825278
bisecting fixing commit since 24c4de4069cbce796a1c71166240807d617cd652
building syzkaller on 39990d513277ce9372a4cc89bdac23d9fc30b056
ensuring issue is reproducible on original commit 24c4de4069cbce796a1c71166240807d617cd652
testing commit 24c4de4069cbce796a1c71166240807d617cd652 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 27f67d0e71c6ca4d93c2bcb1a8a69634cd46bef03dc548caaee518a6bd4d0474
run #0: crashed: INFO: rcu detected stall in sys_recvmmsg
run #1: crashed: INFO: rcu detected stall in sys_recvmmsg
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in sys_recvmmsg
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in sys_recvmmsg
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: INFO: rcu detected stall in corrupted
run #10: crashed: INFO: rcu detected stall in sys_recvmmsg
run #11: crashed: INFO: rcu detected stall in corrupted
run #12: crashed: INFO: rcu detected stall in newfstatat
run #13: crashed: INFO: rcu detected stall in sys_recvmmsg
run #14: crashed: INFO: rcu detected stall in unix_dgram_sendmsg
run #15: crashed: INFO: rcu detected stall in sys_recvmmsg
run #16: crashed: INFO: rcu detected stall in batadv_nc_worker
run #17: crashed: INFO: rcu detected stall in sys_recvmmsg
run #18: crashed: no output from test machine
run #19: crashed: no output from test machine
representative crash: INFO: rcu detected stall in sys_recvmmsg, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit 24c4de4069cbce796a1c71166240807d617cd652 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 4769afefd49b48a779a173ef9e0655a7249c8666b50976e1c409d007f2637d7d
run #0: crashed: INFO: rcu detected stall in sys_recvmmsg
run #1: crashed: INFO: rcu detected stall in unix_dgram_sendmsg
run #2: crashed: INFO: rcu detected stall in sys_recvmmsg
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in sys_recvmmsg
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in wb_workfn
run #7: crashed: INFO: rcu detected stall in sys_recvmmsg
run #8: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor2246233290" "root@10.128.0.21:./syz-executor2246233290"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.0.21, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.0.21 [10.128.0.21] port 22.
debug1: connect to address 10.128.0.21 port 22: Connection timed out
ssh: connect to host 10.128.0.21 port 22: Connection timed out
scp: Connection closed
run #9: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor2748272527" "root@10.128.0.24:./syz-executor2748272527"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.0.24, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.0.24 [10.128.0.24] port 22.
debug1: connect to address 10.128.0.24 port 22: Connection timed out
ssh: connect to host 10.128.0.24 port 22: Connection timed out
scp: Connection closed
representative crash: INFO: rcu detected stall in sys_recvmmsg, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
kconfig minimization: base=3703 full=7269 leaves diff=1986
split chunks (needed=false): <1986>
split chunk #0 of len 1986 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 24c4de4069cbce796a1c71166240807d617cd652 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 0c0430eac717afdd13e0e088d0956af5103c0b7d51073e86a3e1322385966678
run #0: crashed: INFO: rcu detected stall in sys_recvmmsg
run #1: crashed: INFO: rcu detected stall in sys_recvmmsg
run #2: crashed: INFO: rcu detected stall in sys_recvmmsg
run #3: crashed: INFO: rcu detected stall in sys_recvmmsg
run #4: crashed: INFO: rcu detected stall in sys_recvmmsg
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in sys_recvmmsg
run #7: crashed: INFO: rcu detected stall in gc_worker
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: INFO: rcu detected stall in unix_dgram_sendmsg
representative crash: INFO: rcu detected stall in sys_recvmmsg, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
testing commit 24c4de4069cbce796a1c71166240807d617cd652 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6de1f03953d4a844b577737f90de592246260a6dc1e451bcde047b272aa26d1c
all runs: OK
false negative chance: 0.000
testing without sub-chunk 3/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 24c4de4069cbce796a1c71166240807d617cd652 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 7f613fe4eda8fe5b78ded52f397fbace7602270b5f04c12254a65a733dca992f
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in sys_recvmmsg
run #2: crashed: INFO: rcu detected stall in sys_recvmmsg
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1236702238" "root@10.128.1.33:./syz-executor1236702238"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.1.33, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.1.33 [10.128.1.33] port 22.
debug1: connect to address 10.128.1.33 port 22: Connection timed out
ssh: connect to host 10.128.1.33 port 22: Connection timed out
scp: Connection closed
run #7: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor116306477" "root@10.128.0.170:./syz-executor116306477"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.0.170, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.0.170 [10.128.0.170] port 22.
debug1: connect to address 10.128.0.170 port 22: Connection timed out
ssh: connect to host 10.128.0.170 port 22: Connection timed out
scp: Connection closed
run #8: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1977713334" "root@10.128.0.242:./syz-executor1977713334"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.0.242, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.0.242 [10.128.0.242] port 22.
debug1: connect to address 10.128.0.242 port 22: Connection timed out
ssh: connect to host 10.128.0.242 port 22: Connection timed out
scp: Connection closed
run #9: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor206095537" "root@10.128.1.136:./syz-executor206095537"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.1.136, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.1.136 [10.128.1.136] port 22.
debug1: connect to address 10.128.1.136 port 22: Connection timed out
ssh: connect to host 10.128.1.136 port 22: Connection timed out
scp: Connection closed
representative crash: INFO: rcu detected stall in corrupted, 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 24c4de4069cbce796a1c71166240807d617cd652 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: a3f0556162f4b13a07ee893ed848bc915a527bf3e6ec82a449c0c878823e4a4c
run #0: crashed: INFO: rcu detected stall in sys_recvmmsg
run #1: crashed: INFO: rcu detected stall in unix_dgram_sendmsg
run #2: crashed: INFO: rcu detected stall in unix_dgram_sendmsg
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in unix_dgram_sendmsg
run #5: crashed: INFO: rcu detected stall in unix_dgram_sendmsg
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in sys_recvmmsg
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1887379378" "root@10.128.1.48:./syz-executor1887379378"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.1.48, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.1.48 [10.128.1.48] port 22.
debug1: connect to address 10.128.1.48 port 22: Connection timed out
ssh: connect to host 10.128.1.48 port 22: Connection timed out
scp: Connection closed
representative crash: INFO: rcu detected stall in sys_recvmmsg, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing commit 24c4de4069cbce796a1c71166240807d617cd652 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 99ff44e249ec196545db9f0429813a94c5b88d56c7689f6600c1e7bb6f435186
run #0: crashed: INFO: rcu detected stall in sys_recvmmsg
run #1: crashed: INFO: rcu detected stall in sys_recvmmsg
run #2: crashed: INFO: rcu detected stall in unix_dgram_sendmsg
run #3: crashed: INFO: rcu detected stall in sys_recvmmsg
run #4: crashed: INFO: rcu detected stall in sys_recvmmsg
run #5: crashed: BUG: workqueue lockup
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in sys_recvmmsg
run #8: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3345605601" "root@10.128.0.132:./syz-executor3345605601"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.0.132, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.0.132 [10.128.0.132] port 22.
debug1: fd 3 clearing O_NONBLOCK
debug1: Connection established.
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa_sk type -1
debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1
debug1: identity file /root/.ssh/id_ed25519 type -1
debug1: identity file /root/.ssh/id_ed25519-cert type -1
debug1: identity file /root/.ssh/id_ed25519_sk type -1
debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1
debug1: identity file /root/.ssh/id_xmss type -1
debug1: identity file /root/.ssh/id_xmss-cert type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u1
Connection timed out during banner exchange
Connection to 10.128.0.132 port 22 timed out
scp: Connection closed
run #9: OK
representative crash: INFO: rcu detected stall in sys_recvmmsg, types: [HANG]
the chunk can be dropped
minimized to 398 configs; suspects: [6LOWPAN ACPI_WMI ARCH_ENABLE_MEMORY_HOTREMOVE ASUS_WMI CMA DAX_DRIVER DLM DRM DRM_BRIDGE DRM_FBDEV_EMULATION DRM_MIPI_DSI DRM_PANEL DRM_PANEL_BRIDGE DRM_PANEL_ORIENTATION_QUIRKS DRM_SIMPLEDRM DRM_TTM DRM_TTM_HELPER DRM_UDL DRM_VGEM DRM_VIRTIO_GPU DRM_VKMS DRM_VMWGFX DRM_VMWGFX_FBCON DRM_VRAM_HELPER DUMMY DVB_AF9013 DVB_AF9033 DVB_AS102 DVB_AS102_FE DVB_B2C2_FLEXCOP DVB_B2C2_FLEXCOP_USB DVB_CORE DVB_DIB3000MB DVB_DIB3000MC DVB_EC100 DVB_GP8PSK_FE DVB_RTL2830 DVB_RTL2832 DVB_RTL2832_SDR DVB_TEST_DRIVERS DVB_TTUSB_BUDGET DVB_TTUSB_DEC DVB_USB DVB_USB_A800 DVB_USB_AF9005 DVB_USB_AF9005_REMOTE DVB_USB_AF9015 DVB_USB_AF9035 DVB_USB_ANYSEE DVB_USB_AU6610 DVB_USB_AZ6007 DVB_USB_AZ6027 DVB_USB_CE6230 DVB_USB_CINERGY_T2 DVB_USB_CXUSB DVB_USB_DIB0700 DVB_USB_DIB3000MC DVB_USB_DIBUSB_MB DVB_USB_DIBUSB_MC DVB_USB_DIGITV DVB_USB_DTT200U DVB_USB_DTV5100 DVB_USB_DVBSKY DVB_USB_DW2102 DVB_USB_EC168 DVB_USB_GL861 DVB_USB_GP8PSK DVB_USB_LME2510 DVB_USB_M920X DVB_USB_MXL111SF DVB_USB_NOVA_T_USB2 DVB_USB_OPERA1 DVB_USB_PCTV452E DVB_USB_RTL28XXU DVB_USB_TECHNISAT_USB2 DVB_USB_TTUSB2 DVB_USB_UMT_010 DVB_USB_V2 DVB_USB_VP702X DVB_USB_VP7045 DVB_USB_ZD1301 DVB_VIDTV DVB_ZL10353 ECRYPT_FS ECRYPT_FS_MESSAGING EDAC EEPROM_93CX6 EFS_FS ENCRYPTED_KEYS EQUALIZER EROFS_FS EROFS_FS_POSIX_ACL EROFS_FS_SECURITY EROFS_FS_XATTR EROFS_FS_ZIP EVM EVM_ADD_XATTRS EVM_ATTR_FSUUID EXFAT_FS EXPORTFS_BLOCK_OPS EXT3_FS EXT3_FS_POSIX_ACL EXT3_FS_SECURITY F2FS_CHECK_FS F2FS_FAULT_INJECTION F2FS_FS F2FS_FS_COMPRESSION F2FS_FS_LZ4 F2FS_FS_LZ4HC F2FS_FS_LZO F2FS_FS_LZORLE F2FS_FS_POSIX_ACL F2FS_FS_SECURITY F2FS_FS_XATTR F2FS_FS_ZSTD F2FS_STAT_FS FANOTIFY FANOTIFY_ACCESS_PERMISSIONS FB FB_BOOT_VESA_SUPPORT FB_CFB_COPYAREA FB_CFB_FILLRECT FB_CFB_IMAGEBLIT FB_CMDLINE FB_DEFERRED_IO FB_NOTIFY FB_SYS_COPYAREA FB_SYS_FILLRECT FB_SYS_FOPS FB_SYS_IMAGEBLIT FB_TILEBLITTING FB_VESA FB_VGA16 FB_VIRTUAL FDDI FIREWIRE FIREWIRE_NET FIREWIRE_OHCI FIREWIRE_SBP2 FONT_8x16 FONT_8x8 FONT_SUPPORT FRAMEBUFFER_CONSOLE FRAMEBUFFER_CONSOLE_DETECT_PRIMARY FRAMEBUFFER_CONSOLE_ROTATION FS_DAX FS_DAX_PMD FS_ENCRYPTION FS_ENCRYPTION_ALGS FS_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FUSE_DAX FUSE_FS FW_LOADER_COMPRESS FW_LOADER_PAGED_BUF FW_LOADER_USER_HELPER FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GARP GENERIC_PHY GFS2_FS GFS2_FS_LOCKING_DLM GOOGLE_COREBOOT_TABLE GOOGLE_FIRMWARE GOOGLE_MEMCONSOLE GOOGLE_MEMCONSOLE_COREBOOT GOOGLE_VPD GPIOLIB GPIOLIB_IRQCHIP GPIO_ACPI GPIO_DLN2 GPIO_VIPERBOARD GREENASIA_FF GREYBUS GREYBUS_BRIDGED_PHY GREYBUS_ES2 GREYBUS_HID GREYBUS_USB GTP GVE HAVE_ARCH_USERFAULTFD_MINOR HAVE_ARCH_USERFAULTFD_WP HAVE_BOOTMEM_INFO_NODE HAVE_KVM_CPU_RELAX_INTERCEPT HAVE_KVM_EVENTFD HAVE_KVM_IRQCHIP HAVE_KVM_IRQFD HAVE_KVM_IRQ_BYPASS HAVE_KVM_IRQ_ROUTING HAVE_KVM_MSI HAVE_KVM_NO_POLL HAVE_KVM_PM_NOTIFIER HAVE_SCHED_AVG_IRQ HDLC HDLC_CISCO HDLC_FR HDLC_PPP HDLC_RAW HDLC_RAW_ETH HDLC_X25 HDMI HFSPLUS_FS HFS_FS HID_ACCUTOUCH HID_ACRUX HID_ACRUX_FF HID_ALPS HID_APPLEIR HID_ASUS HID_AUREAL HID_BATTERY_STRENGTH HID_BETOP_FF HID_CMEDIA HID_CORSAIR HID_CP2112 HID_ELECOM HID_ELO HID_EMS_FF HID_GEMBIRD HID_GFRM HID_GREENASIA HID_GT683R HID_HOLTEK HID_ICADE HID_KEYTOUCH HID_KYE HID_LCPOWER HID_LED HID_LENOVO HID_LOGITECH_DJ HID_LOGITECH_HIDPP HID_MAGICMOUSE HID_MAYFLASH HID_MULTITOUCH HID_NTI HID_ORTEK HID_PENMOUNT HID_PICOLCD HID_PICOLCD_BACKLIGHT HID_PICOLCD_CIR HID_PICOLCD_FB HID_PICOLCD_LCD HID_PICOLCD_LEDS HID_PLANTRONICS HID_PRIMAX HID_PRODIKEYS HID_RETRODE HID_RMI HID_ROCCAT HID_SAITEK HID_SENSOR_ACCEL_3D HID_SENSOR_ALS HID_SENSOR_CUSTOM_SENSOR HID_SENSOR_DEVICE_ROTATION HID_SENSOR_GYRO_3D HID_SENSOR_HUB HID_SENSOR_HUMIDITY HID_SENSOR_IIO_COMMON HID_SENSOR_IIO_TRIGGER HID_SENSOR_INCLINOMETER_3D HID_SENSOR_MAGNETOMETER_3D HID_SENSOR_PRESS HID_SENSOR_PROX HID_SENSOR_TEMP HID_SPEEDLINK HID_STEELSERIES HID_THINGM HID_TIVO HID_TWINHAN HID_UCLOGIC HID_UDRAW_PS3 HID_WACOM HID_WALTOP HID_WIIMOTE HID_XINMO HID_ZYDACRON HMM_MIRROR HOLTEK_FF HOTPLUG_PCI_PCIE HPET_MMAP HPET_MMAP_DEFAULT HPFS_FS I2C_ALGOBIT I2C_CHARDEV I2C_DIOLAN_U2C I2C_DLN2 I2C_MUX I2C_MUX_REG I2C_ROBOTFUZZ_OSIF I2C_SI4713 I2C_SLAVE I2C_SLAVE_EEPROM I2C_TINY_USB I2C_VIPERBOARD IEEE802154 IEEE802154_6LOWPAN IEEE802154_ATUSB IEEE802154_DRIVERS IEEE802154_HWSIM IEEE802154_NL802154_EXPERIMENTAL IEEE802154_SOCKET IFB IIO IIO_BUFFER IIO_KFIFO_BUF IIO_TRIGGER IIO_TRIGGERED_BUFFER IKCONFIG IKCONFIG_PROC IMA IMA_APPRAISE IMA_APPRAISE_MODSIG IMA_DEFAULT_HASH_SHA256 IMA_LSM_RULES IMA_MEASURE_ASYMMETRIC_KEYS IMA_NG_TEMPLATE IMA_QUEUE_EARLY_BOOT_KEYS IMA_READ_POLICY IMA_WRITE_POLICY INET6_ESPINTCP INET6_ESP_OFFLOAD INET6_IPCOMP INET6_TUNNEL INET6_XFRM_TUNNEL INET_AH INET_DCCP_DIAG INET_DIAG INET_DIAG_DESTROY INET_ESP INET_ESPINTCP INET_ESP_OFFLOAD INET_IPCOMP INET_MPTCP_DIAG INET_RAW_DIAG INET_SCTP_DIAG INET_TCP_DIAG INET_UDP_DIAG INET_XFRM_TUNNEL INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_ADDR_TRANS_CONFIGFS INFINIBAND_IPOIB INFINIBAND_IPOIB_CM INFINIBAND_IPOIB_DEBUG INFINIBAND_ISER INFINIBAND_ON_DEMAND_PAGING INFINIBAND_RTRS INFINIBAND_SRP INFINIBAND_USER_ACCESS INFINIBAND_USER_MAD INFINIBAND_USER_MEM INPUT_ATI_REMOTE2 INPUT_CM109 INPUT_IMS_PCU INPUT_JOYDEV INPUT_KEYSPAN_REMOTE INPUT_LEDS INPUT_MOUSEDEV INPUT_MOUSEDEV_PSAUX INPUT_POWERMATE INPUT_UINPUT INPUT_YEALINK INTEGRITY INTEGRITY_ASYMMETRIC_KEYS INTEGRITY_AUDIT INTEGRITY_SIGNATURE INTEGRITY_TRUSTED_KEYRING INTEL_IDMA64 INTEL_IOATDMA INTEL_IOMMU_DEFAULT_ON INTEL_IOMMU_SVM INTERVAL_TREE IOMMU_SVA_LIB IP6_NF_MATCH_AH IP6_NF_MATCH_EUI64 IP6_NF_MATCH_FRAG IP6_NF_MATCH_HL IP6_NF_MATCH_MH IP6_NF_MATCH_OPTS IP6_NF_MATCH_RPFILTER IP6_NF_MATCH_RT IP6_NF_MATCH_SRH IP6_NF_NAT IP6_NF_RAW IP6_NF_SECURITY IP6_NF_TARGET_HL IP6_NF_TARGET_MASQUERADE IP6_NF_TARGET_NPT IP6_NF_TARGET_SYNPROXY IPV6_FOU IPV6_FOU_TUNNEL IPV6_GRE IPV6_ILA IPV6_MIP6 IPV6_MROUTE IPV6_MROUTE_MULTIPLE_TABLES IPV6_MULTIPLE_TABLES IPV6_OPTIMISTIC_DAD IPV6_PIMSM_V2 IPV6_ROUTER_PREF IPV6_ROUTE_INFO IPV6_RPL_LWTUNNEL IPV6_SEG6_BPF IPV6_SEG6_HMAC IPV6_SEG6_LWTUNNEL IPV6_SIT_6RD IPV6_SUBTREES IPV6_TUNNEL IPV6_VTI IPVLAN IPVLAN_L3S IPVTAP IP_DCCP IP_DCCP_CCID3 IP_DCCP_TFRC_LIB IP_FIB_TRIE_STATS IP_MROUTE_MULTIPLE_TABLES IP_NF_ARPFILTER IP_NF_ARPTABLES IP_NF_ARP_MANGLE IP_NF_MATCH_AH IP_NF_MATCH_ECN IP_NF_MATCH_RPFILTER IP_NF_MATCH_TTL IP_NF_RAW IP_NF_SECURITY IP_NF_TARGET_CLUSTERIP IP_NF_TARGET_ECN IP_NF_TARGET_NETMAP IP_NF_TARGET_REDIRECT IP_NF_TARGET_SYNPROXY IP_NF_TARGET_TTL IP_ROUTE_CLASSID IP_SCTP IP_SET IP_SET_BITMAP_IP IP_SET_BITMAP_IPMAC IP_SET_BITMAP_PORT IP_SET_HASH_IP IP_SET_HASH_IPMAC IP_SET_HASH_IPMARK IP_SET_HASH_IPPORT IP_SET_HASH_IPPORTIP IP_SET_HASH_IPPORTNET IP_SET_HASH_MAC IP_SET_HASH_NET IP_SET_HASH_NETIFACE IP_SET_HASH_NETNET IP_SET_HASH_NETPORT IP_SET_HASH_NETPORTNET IP_SET_LIST_SET IP_VS IP_VS_DH IP_VS_FO 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 IRQ_TIME_ACCOUNTING IR_IGORPLUGUSB IR_IGUANA IR_IMON IR_MCEUSB IR_REDRAT3 IR_STREAMZAP IR_TTUSBIR ISDN ISDN_CAPI_MIDDLEWARE LAPB LCD_CLASS_DEVICE MAC802154 MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MFD_VIPERBOARD MPTCP MTD NETFILTER_ADVANCED NET_ACT_GACT NET_ACT_MIRRED NET_IPGRE_DEMUX NFT_FWD_NETDEV NF_TABLES NF_TABLES_NETDEV RADIO_ADAPTERS RADIO_SI4713 RAS RC_CORE RC_DEVICES RFKILL SND SOUND STAGING TRANSPARENT_HUGEPAGE VIDEO_DEV VIDEO_V4L2 VIRTIO_FS WAN ZONE_DEVICE]
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing current HEAD 9465fef4ae351749f7068da8c78af4ca27e61928
testing commit 9465fef4ae351749f7068da8c78af4ca27e61928 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: bbcb0519e4163d0728068aee2fca4bff32877d6fee9bf6a39588a2e6efbaad57
run #0: crashed: INFO: rcu detected stall in sys_sendmmsg
run #1: crashed: INFO: rcu detected stall in sys_sendmmsg
run #2: crashed: INFO: rcu detected stall in sys_recvmmsg
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in sys_recvmmsg
run #7: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor2373317665" "root@10.128.0.254:./syz-executor2373317665"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.0.254, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.0.254 [10.128.0.254] port 22.
debug1: connect to address 10.128.0.254 port 22: Connection timed out
ssh: connect to host 10.128.0.254 port 22: Connection timed out
scp: Connection closed
run #8: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor2239517428" "root@10.128.10.4:./syz-executor2239517428"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.4, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.4 [10.128.10.4] port 22.
debug1: fd 3 clearing O_NONBLOCK
debug1: Connection established.
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa_sk type -1
debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1
debug1: identity file /root/.ssh/id_ed25519 type -1
debug1: identity file /root/.ssh/id_ed25519-cert type -1
debug1: identity file /root/.ssh/id_ed25519_sk type -1
debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1
debug1: identity file /root/.ssh/id_xmss type -1
debug1: identity file /root/.ssh/id_xmss-cert type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u1
Connection timed out during banner exchange
Connection to 10.128.10.4 port 22 timed out
scp: Connection closed
run #9: OK
representative crash: INFO: rcu detected stall in sys_sendmmsg, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 2h21m59.939881503s (build: 53m53.150849568s, test: 1h26m20.497953774s)
crash still not fixed or there were kernel test errors
commit msg: Linux 5.15.153
crash: INFO: rcu detected stall in sys_sendmmsg
rcu: INFO: rcu_sched detected stalls on CPUs/tasks:
(detected by 1, t=10002 jiffies, g=1253, q=855)
rcu: All QSes seen, last rcu_sched kthread activity 10002 (4294952783-4294942781), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_sched kthread starved for 10002 jiffies! g1253 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_sched state:R running task stack:14368 pid: 12 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x2b8/0x790 kernel/sched/core.c:6376
schedule+0x53/0x90 kernel/sched/core.c:6459
schedule_timeout+0xaf/0x140 kernel/time/timer.c:1884
rcu_gp_fqs_loop+0xe2/0x320 kernel/rcu/tree.c:1972
rcu_gp_kthread+0x77/0xe0 kernel/rcu/tree.c:2145
kthread+0x10b/0x130 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 1
CPU: 1 PID: 3949 Comm: syz-executor.4 Not tainted 5.15.153-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+0x41/0x5e lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x32/0x80 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x81/0x90 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
rcu_check_gp_kthread_starvation+0x101/0x111 kernel/rcu/tree_stall.h:487
print_other_cpu_stall kernel/rcu/tree_stall.h:592 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:745 [inline]
rcu_pending kernel/rcu/tree.c:3932 [inline]
rcu_sched_clock_irq.cold+0x89/0x1e7 kernel/rcu/tree.c:2619
update_process_times+0x87/0xc0 kernel/time/timer.c:1788
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:1686 [inline]
__hrtimer_run_queues+0x138/0x2e0 kernel/time/hrtimer.c:1750
hrtimer_interrupt+0x109/0x230 kernel/time/hrtimer.c:1812
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x63/0x100 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x65/0x90 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:kmap_local_sched_in kernel/sched/core.c:4810 [inline]
RIP: 0010:finish_task_switch.isra.0+0xa1/0x220 kernel/sched/core.c:4912
Code: f6 68 b1 40 09 81 49 8d 7c 24 18 e8 89 75 02 00 4c 89 e7 e8 d1 fe ff ff 4c 89 e7 e8 69 aa f3 00 fb 65 48 8b 04 25 00 af 01 00 <8b> 88 d8 14 00 00 5a 85 c9 0f 85 09 01 00 00 4d 85 f6 74 1d 65 48
RSP: 0018:ffffc90000aeb9e0 EFLAGS: 00000246
RAX: ffff88810a91d100 RBX: ffff88810a91d100 RCX: ffffc90000aeb994
RDX: 0000000000000000 RSI: ffff888237d2bb18 RDI: ffff888237d2bb00
RBP: ffffc90000aeba10 R08: ffff88810a8bd100 R09: 0000000000000000
R10: 0000000000080000 R11: 0000000000000001 R12: ffff888237d2bb00
R13: ffff88810a8b8000 R14: 0000000000000000 R15: 0000000000000000
context_switch kernel/sched/core.c:5033 [inline]
__schedule+0x2c0/0x790 kernel/sched/core.c:6376
schedule+0x53/0x90 kernel/sched/core.c:6459
schedule_timeout+0x100/0x140 kernel/time/timer.c:1860
unix_wait_for_peer+0xc4/0xd0 net/unix/af_unix.c:1313
unix_dgram_sendmsg+0x958/0x9a0 net/unix/af_unix.c:1911
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg+0x2e/0x40 net/socket.c:716
____sys_sendmsg+0x13d/0x250 net/socket.c:2431
___sys_sendmsg+0x6e/0xb0 net/socket.c:2485
__sys_sendmmsg+0xb0/0x1b0 net/socket.c:2571
__do_sys_sendmmsg net/socket.c:2600 [inline]
__se_sys_sendmmsg net/socket.c:2597 [inline]
__x64_sys_sendmmsg+0x1b/0x20 net/socket.c:2597
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fde2afa8ae9
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:00007fde2ab2b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007fde2b0c7f80 RCX: 00007fde2afa8ae9
RDX: 0000000000000318 RSI: 00000000200bd000 RDI: 0000000000000004
RBP: 00007fde2aff447a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007fde2b0c7f80 R15: 00007ffcfb306bf8