ci2 starts bisection 2023-09-18 00:11:02.036307607 +0000 UTC m=+402794.065481730 bisecting fixing commit since 2f3918bc53fb998fdeed8683ddc61194ceb84edf building syzkaller on 49519f067f7fc9bfbf869e6851a4d398a9f7863f ensuring issue is reproducible on original commit 2f3918bc53fb998fdeed8683ddc61194ceb84edf testing commit 2f3918bc53fb998fdeed8683ddc61194ceb84edf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ac862589e2bf70903b0389e3924c3b52c9adddf4c8bd2480385b7521ca6f7ff0 run #0: crashed: possible deadlock in bpf_trace_printk run #1: crashed: possible deadlock in bpf_trace_printk run #2: crashed: possible deadlock in bpf_trace_printk run #3: crashed: possible deadlock in bpf_trace_printk run #4: crashed: possible deadlock in bpf_trace_printk run #5: crashed: possible deadlock in bpf_trace_printk run #6: crashed: possible deadlock in bpf_trace_printk run #7: crashed: possible deadlock in bpf_trace_printk run #8: crashed: possible deadlock in bpf_trace_printk run #9: crashed: possible deadlock in bpf_trace_printk run #10: crashed: INFO: rcu detected stall in corrupted run #11: crashed: INFO: rcu detected stall in corrupted run #12: crashed: INFO: rcu detected stall in corrupted run #13: crashed: INFO: rcu detected stall in corrupted run #14: crashed: INFO: rcu detected stall in corrupted run #15: crashed: INFO: rcu detected stall in corrupted run #16: crashed: INFO: rcu detected stall in corrupted run #17: crashed: INFO: rcu detected stall in corrupted run #18: crashed: INFO: rcu detected stall in corrupted run #19: crashed: INFO: rcu detected stall in corrupted representative crash: possible deadlock in bpf_trace_printk, types: [LOCKDEP HANG] check whether we can drop unnecessary instrumentation disabling configs for [BUG KASAN ATOMIC_SLEEP LEAK UBSAN], they are not needed testing commit 2f3918bc53fb998fdeed8683ddc61194ceb84edf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ed61fe607f21f392e56aa62021e28b3369cd10f6f73e79155e5a03047c860a12 run #0: crashed: possible deadlock in bpf_trace_printk run #1: crashed: INFO: rcu detected stall in corrupted 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 corrupted run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] the bug reproduces without the instrumentation disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed kconfig minimization: base=3820 full=7523 leaves diff=1994 split chunks (needed=false): <1994> split chunk #0 of len 1994 into 5 parts testing without sub-chunk 1/5 disabling configs for [KASAN ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed testing commit 2f3918bc53fb998fdeed8683ddc61194ceb84edf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a416cc47bcf0d61ca2186b9861d38836394a01b753e938ef660f8d23f77a826f run #0: crashed: possible deadlock in bpf_trace_printk run #1: crashed: possible deadlock in bpf_trace_printk run #2: crashed: possible deadlock in bpf_trace_printk run #3: crashed: possible deadlock in bpf_trace_printk 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 corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing commit 2f3918bc53fb998fdeed8683ddc61194ceb84edf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cb77bc6017a18de51bed463523226cb50044de1980ec1dd44ccacb5864978e60 run #0: crashed: possible deadlock in bpf_trace_printk run #1: crashed: possible deadlock in bpf_trace_printk run #2: crashed: possible deadlock in bpf_trace_printk run #3: crashed: possible deadlock in bpf_trace_printk run #4: crashed: possible deadlock in bpf_trace_printk run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: rcu detected stall in corrupted representative crash: possible deadlock in bpf_trace_printk, types: [LOCKDEP HANG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed testing commit 2f3918bc53fb998fdeed8683ddc61194ceb84edf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fc3a431aac7aea0d0d9db7720847d46d6e6a26dd7761cc8cf6ef86d912c0fd91 run #0: crashed: possible deadlock in bpf_trace_printk run #1: crashed: possible deadlock in bpf_trace_printk run #2: crashed: possible deadlock in bpf_trace_printk run #3: crashed: possible deadlock in bpf_trace_printk run #4: crashed: possible deadlock in bpf_trace_printk run #5: crashed: possible deadlock in bpf_trace_printk run #6: crashed: possible deadlock in bpf_trace_printk run #7: crashed: possible deadlock in bpf_trace_printk run #8: crashed: no output from test machine run #9: crashed: no output from test machine representative crash: possible deadlock in bpf_trace_printk, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing commit 2f3918bc53fb998fdeed8683ddc61194ceb84edf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e4a4917876733034efd2a34211de95a90f8ba582c3ce311ddcfed9f5019c1d06 run #0: crashed: possible deadlock in bpf_trace_printk run #1: crashed: possible deadlock in bpf_trace_printk run #2: crashed: possible deadlock in bpf_trace_printk run #3: crashed: possible deadlock in bpf_trace_printk run #4: crashed: possible deadlock in bpf_trace_printk run #5: crashed: possible deadlock in bpf_trace_printk run #6: crashed: possible deadlock in bpf_trace_printk run #7: crashed: possible deadlock in bpf_trace_printk run #8: crashed: no output from test machine run #9: crashed: no output from test machine representative crash: possible deadlock in bpf_trace_printk, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [BUG KASAN ATOMIC_SLEEP LEAK UBSAN], they are not needed testing commit 2f3918bc53fb998fdeed8683ddc61194ceb84edf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 35452fca8ee317718308573ccd0d5d320c79edd4990ea2a18bb521cd9515094b all runs: OK false negative chance: 0.000 minimized to 398 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CMA COMMON_CLK CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_LZO CRYPTO_ZSTD DVB_CORE EXTCON FB GPIOLIB HID_ZEROPLUS I2C_MUX IIO IRQ_REMAP KVM KVM_INTEL LIBNVDIMM MEDIA_ANALOG_TV_SUPPORT MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT MEDIA_CONTROLLER MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_VIPERBOARD PARPORT PCCARD PCMCIA PHONET RADIO_ADAPTERS RADIO_SI470X RADIO_SI4713 RC_CORE RFKILL SND SOUND SPI SSB TAP TARGET_CORE TUN USB_AMD5536UDC USB_ATM USB_CONFIGFS USB_CONFIGFS_F_MIDI USB_CONFIGFS_F_PRINTER USB_CONFIGFS_F_TCM USB_CONFIGFS_F_UAC1 USB_CONFIGFS_F_UAC1_LEGACY USB_CONFIGFS_F_UAC2 USB_CONFIGFS_F_UVC USB_CONFIGFS_MASS_STORAGE USB_CONFIGFS_NCM USB_CONFIGFS_OBEX USB_CONFIGFS_PHONET USB_CONFIGFS_RNDIS USB_CONFIGFS_SERIAL USB_CXACRU USB_CYPRESS_CY7C63 USB_CYTHERM USB_DSBR USB_DUMMY_HCD USB_DWC2 USB_DWC2_HOST USB_DWC2_PCI USB_DWC3 USB_DWC3_GADGET USB_DWC3_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T USB_EHCI_HCD_PLATFORM USB_EHCI_ROOT_HUB_TT USB_EHSET_TEST_FIXTURE USB_EMI26 USB_EMI62 USB_EPSON2888 USB_EZUSB_FX2 USB_FEW_INIT_RETRIES USB_FOTG210_HCD USB_FOTG210_UDC USB_FTDI_ELAN USB_F_ACM USB_F_ECM USB_F_EEM USB_F_FS USB_F_HID USB_F_MASS_STORAGE USB_F_MIDI USB_F_NCM USB_F_OBEX USB_F_PHONET USB_F_PRINTER USB_F_RNDIS USB_F_SERIAL USB_F_SS_LB USB_F_SUBSET USB_F_TCM USB_F_UAC1 USB_F_UAC1_LEGACY USB_F_UAC2 USB_F_UVC USB_GADGET USB_GADGETFS USB_GADGET_DEBUG_FILES USB_GADGET_DEBUG_FS USB_GL860 USB_GOKU USB_GPIO_VBUS USB_GR_UDC USB_GSPCA USB_GSPCA_BENQ USB_GSPCA_CONEX USB_GSPCA_CPIA1 USB_GSPCA_DTCS033 USB_GSPCA_ETOMS USB_GSPCA_FINEPIX USB_GSPCA_JEILINJ USB_GSPCA_JL2005BCD USB_GSPCA_KINECT USB_GSPCA_KONICA USB_GSPCA_MARS USB_GSPCA_MR97310A USB_GSPCA_NW80X USB_GSPCA_OV519 USB_GSPCA_OV534 USB_GSPCA_OV534_9 USB_GSPCA_PAC207 USB_GSPCA_PAC7302 USB_GSPCA_PAC7311 USB_GSPCA_SE401 USB_GSPCA_SN9C2028 USB_GSPCA_SN9C20X USB_GSPCA_SONIXB USB_GSPCA_SONIXJ USB_GSPCA_SPCA1528 USB_GSPCA_SPCA500 USB_GSPCA_SPCA501 USB_GSPCA_SPCA505 USB_GSPCA_SPCA506 USB_GSPCA_SPCA508 USB_GSPCA_SPCA561 USB_GSPCA_SQ905 USB_GSPCA_SQ905C USB_GSPCA_SQ930X USB_GSPCA_STK014 USB_GSPCA_STK1135 USB_GSPCA_STV0680 USB_GSPCA_SUNPLUS USB_GSPCA_T613 USB_GSPCA_TOPRO USB_GSPCA_TOUPTEK USB_GSPCA_TV8532 USB_GSPCA_VC032X USB_GSPCA_VICAM USB_GSPCA_XIRLINK_CIT USB_GSPCA_ZC3XX USB_HACKRF USB_HCD_BCMA USB_HCD_SSB USB_HSIC_USB3503 USB_HSIC_USB4604 USB_HSO USB_HUB_USB251XB USB_IDMOUSE USB_IOWARRIOR USB_IPHETH USB_ISIGHTFW USB_ISP116X_HCD USB_ISP1301 USB_ISP1760 USB_ISP1760_DUAL_ROLE USB_ISP1760_HCD USB_ISP1761_UDC USB_KAWETH USB_KC2190 USB_KEENE USB_LAN78XX USB_LCD USB_LD USB_LEDS_TRIGGER_USBPORT USB_LED_TRIG USB_LEGOTOWER USB_LIBCOMPOSITE USB_LINK_LAYER_TEST USB_M5602 USB_MA901 USB_MAX3421_HCD USB_MDC800 USB_MICROTEK USB_MR800 USB_MSI2500 USB_MUSB_DUAL_ROLE USB_MUSB_HDRC USB_MV_U3D USB_MV_UDC USB_NET2272 USB_NET2272_DMA USB_NET2280 USB_NET_AX88179_178A USB_NET_AX8817X USB_NET_CDCETHER USB_NET_CDC_EEM USB_NET_CDC_MBIM USB_NET_CDC_NCM USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE USB_NET_CH9200 USB_NET_CX82310_ETH USB_NET_DM9601 USB_NET_GL620A USB_NET_HUAWEI_CDC_NCM USB_NET_INT51X1 USB_NET_KALMIA USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_QMI_WWAN USB_NET_RNDIS_HOST USB_NET_RNDIS_WLAN USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_OXU210HP_HCD USB_PEGASUS USB_PULSE8_CEC USB_PWC USB_PWC_INPUT_EVDEV USB_PXA27X USB_R8A66597 USB_R8A66597_HCD USB_RAINSHADOW_CEC USB_RAREMONO USB_RAW_GADGET USB_RTL8150 USB_RTL8152 USB_RTL8153_ECM USB_S2255 USB_SERIAL USB_SERIAL_AIRCABLE USB_SERIAL_ARK3116 USB_SERIAL_BELKIN USB_SERIAL_CH341 USB_SERIAL_CONSOLE USB_SERIAL_CP210X USB_SERIAL_CYBERJACK USB_SERIAL_CYPRESS_M8 USB_SERIAL_DEBUG USB_SERIAL_DIGI_ACCELEPORT USB_SERIAL_EDGEPORT USB_SERIAL_EDGEPORT_TI USB_SERIAL_EMPEG USB_SERIAL_F81232 USB_SERIAL_F8153X USB_SERIAL_FTDI_SIO USB_SERIAL_GARMIN USB_SERIAL_GENERIC USB_SERIAL_IPAQ USB_SERIAL_IPW USB_SERIAL_IR USB_SERIAL_IUU USB_SERIAL_KEYSPAN USB_SERIAL_KEYSPAN_PDA USB_SERIAL_KLSI USB_SERIAL_KOBIL_SCT USB_SERIAL_MCT_U232 USB_SERIAL_METRO USB_SERIAL_MOS7715_PARPORT USB_SERIAL_MOS7720 USB_SERIAL_MOS7840 USB_SERIAL_MXUPORT USB_SERIAL_NAVMAN USB_SERIAL_OMNINET USB_SERIAL_OPTICON USB_SERIAL_OPTION USB_SERIAL_OTI6858 USB_SERIAL_PL2303 USB_SERIAL_QCAUX USB_SERIAL_QT2 USB_SERIAL_QUALCOMM USB_SERIAL_SAFE USB_SERIAL_SIERRAWIRELESS USB_SERIAL_SIMPLE USB_SERIAL_SPCP8X5 USB_SERIAL_SSU100 USB_SERIAL_SYMBOL USB_SERIAL_TI USB_SERIAL_UPD78F0730 USB_SERIAL_VISOR USB_SERIAL_WHITEHEAT USB_SERIAL_WISHBONE USB_SERIAL_WWAN USB_SERIAL_XR USB_SERIAL_XSENS_MT USB_SEVSEG USB_SI470X USB_SI4713 USB_SIERRA_NET USB_SISUSBVGA USB_SL811_CS USB_SL811_HCD USB_SL811_HCD_ISO USB_SNP_CORE USB_SPEEDTOUCH USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_ENE_UB6250 USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_STV06XX USB_TEST USB_TMC USB_TRANCEVIBRATOR USB_U132_HCD USB_UAS USB_UEAGLEATM USB_ULPI_BUS USB_USBNET USB_USS720 USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_VIDEO_CLASS USB_VIDEO_CLASS_INPUT_EVDEV USB_VL600 USB_WDM USB_XHCI_DBGCAP USB_XHCI_PLATFORM USB_XUSBATM USB_YUREX USERFAULTFD USERIO USERMODE_DRIVER USER_RETURN_NOTIFIER U_SERIAL_CONSOLE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VDPA_SIM VDPA_SIM_BLOCK VDPA_SIM_NET VDPA_USER VETH VFIO VFIO_IOMMU_TYPE1 VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_PCI_MMAP VFIO_VIRQFD VGASTATE VHOST VHOST_CROSS_ENDIAN_LEGACY VHOST_IOTLB VHOST_NET VHOST_RING VHOST_VDPA VHOST_VSOCK VIDEOBUF2_CORE VIDEOBUF2_DMA_CONTIG VIDEOBUF2_DMA_SG VIDEOBUF2_MEMOPS VIDEOBUF2_V4L2 VIDEOBUF2_VMALLOC VIDEOMODE_HELPERS VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 VIDEO_CS53L32A VIDEO_CX231XX VIDEO_CX231XX_ALSA VIDEO_CX231XX_DVB VIDEO_CX231XX_RC VIDEO_CX2341X VIDEO_CX25840 VIDEO_DEV VIDEO_EM28XX VIDEO_EM28XX_ALSA VIDEO_EM28XX_DVB VIDEO_EM28XX_RC VIDEO_EM28XX_V4L2 VIDEO_GO7007 VIDEO_GO7007_LOADER VIDEO_GO7007_USB VIDEO_GO7007_USB_S2250_BOARD VIDEO_HDPVR VIDEO_MSP3400 VIDEO_PVRUSB2 VIDEO_PVRUSB2_DVB VIDEO_PVRUSB2_SYSFS VIDEO_SAA711X VIDEO_STK1160 VIDEO_STK1160_COMMON VIDEO_TUNER VIDEO_TVEEPROM VIDEO_USBTV VIDEO_V4L2_I2C VIDEO_V4L2_SUBDEV_API VIDEO_V4L2_TPG VIDEO_VICODEC VIDEO_VIM2M VIDEO_VIMC VIDEO_VIVID VIDEO_VIVID_CEC VIDEO_WM8775 VIPERBOARD_ADC VIRTIO_BALLOON VIRTIO_DMA_SHARED_BUFFER VIRTIO_MEM VIRTIO_MMIO VIRTIO_MMIO_CMDLINE_DEVICES VIRTIO_PMEM VIRTIO_VDPA VIRTIO_VSOCKETS VIRTIO_VSOCKETS_COMMON VIRT_WIFI VLAN_8021Q VLAN_8021Q_GVRP VLAN_8021Q_MVRP VMAP_PFN VMWARE_VMCI VMXNET3 VP_VDPA VSOCKETS VSOCKETS_DIAG VSOCKETS_LOOPBACK VSOCKMON VT_HW_CONSOLE_BINDING VXFS_FS WANT_DEV_COREDUMP WEXT_CORE WEXT_PRIV WEXT_PROC WIREGUARD WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_PURELIFI WLAN_VENDOR_SILABS X86_SGX X86_SGX_KVM X86_X2APIC X86_X32_ABI XARRAY_MULTI XDP_SOCKETS XDP_SOCKETS_DIAG XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER_COMPAT XFS_FS XFS_POSIX_ACL XFS_QUOTA XFS_RT XFS_SUPPORT_V4 XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZBUD ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_ZPOOL_DEFAULT_ZBUD] disabling configs for [BUG KASAN ATOMIC_SLEEP LEAK UBSAN], they are not needed determining the merge base between 2f3918bc53fb998fdeed8683ddc61194ceb84edf and ce9ecca0238b140b88f43859b211c9fdfd8e5b70 830b3c68c1fb1e9176028d02ef86f3cf76aa2476/Linux 6.1 is a merge base, check if it has the bug testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 497abc89164ffb25057be77bf29eec3b72a99756fff4c8093bcdf0bf622b95c9 all runs: crashed: possible deadlock in bpf_trace_printk representative crash: possible deadlock in bpf_trace_printk, types: [LOCKDEP] testing current HEAD ce9ecca0238b140b88f43859b211c9fdfd8e5b70 testing commit ce9ecca0238b140b88f43859b211c9fdfd8e5b70 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d28971e5f9bdad51aaf1387d59a2f426246e9a37790e20eaebbd4b2ae390a88e all runs: OK false negative chance: 0.000 # git bisect start ce9ecca0238b140b88f43859b211c9fdfd8e5b70 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 Bisecting: 38475 revisions left to test after this (roughly 15 steps) [b68ee1c6131c540a62ecd443be89c406401df091] Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit b68ee1c6131c540a62ecd443be89c406401df091 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e5d99c4d80043470ec261e93b7536f12985b1865f1fb8c3ddca990faffd240c5 all runs: OK false negative chance: 0.000 # git bisect bad b68ee1c6131c540a62ecd443be89c406401df091 Bisecting: 19083 revisions left to test after this (roughly 14 steps) [8ca8d89b43caf9a02a18414d6eeff966d2b14512] Merge tag 'cgroup-for-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 8ca8d89b43caf9a02a18414d6eeff966d2b14512 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7599caed5e8c56306668653f385992901fda9f5bdac3cd2db3383f7c31a681fe all runs: crashed: possible deadlock in bpf_trace_printk representative crash: possible deadlock in bpf_trace_printk, types: [LOCKDEP] # git bisect good 8ca8d89b43caf9a02a18414d6eeff966d2b14512 Bisecting: 9554 revisions left to test after this (roughly 13 steps) [60e2bf7d10e9cd5641f4a5183a19058d9a2c8782] Merge tag 'input-for-v6.3-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 60e2bf7d10e9cd5641f4a5183a19058d9a2c8782 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ac2fa8df2fb69aaf1d81c2ce4b9affc959e5e963cc1ce43dda06ab8045801b1b all runs: OK false negative chance: 0.000 # git bisect bad 60e2bf7d10e9cd5641f4a5183a19058d9a2c8782 Bisecting: 4979 revisions left to test after this (roughly 12 steps) [307e14c039063f0c9bd7a18a7add8f940580dcc9] Merge tag '6.3-rc-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6 determine whether the revision contains the guilty commit revision 8ca8d89b43caf9a02a18414d6eeff966d2b14512 crashed and is reachable testing commit 307e14c039063f0c9bd7a18a7add8f940580dcc9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 390154e9c9e74c09f6a1a60f147615043b60f534b6226832de3ead815f822ded all runs: OK false negative chance: 0.000 # git bisect bad 307e14c039063f0c9bd7a18a7add8f940580dcc9 Bisecting: 2481 revisions left to test after this (roughly 11 steps) [d1fabc68f8e0541d41657096dc713cb01775652d] Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit d1fabc68f8e0541d41657096dc713cb01775652d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cfae11bf0694f73a5d792f9edacf4f48dc3ae3e53a544e4586df77fe32f9a1a1 all runs: OK false negative chance: 0.000 # git bisect bad d1fabc68f8e0541d41657096dc713cb01775652d Bisecting: 1033 revisions left to test after this (roughly 10 steps) [8b6f322e47ba4ac95b63bff1fcdd0d3f85fbc61b] Merge branch 'net-sched-transition-act_pedit-to-rcu-and-percpu-stats' determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 8b6f322e47ba4ac95b63bff1fcdd0d3f85fbc61b gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a44f569728d6adb62db7bbfe2f0213eee76855b602275ab2a5224ac4e65ea9ca all runs: OK false negative chance: 0.000 # git bisect bad 8b6f322e47ba4ac95b63bff1fcdd0d3f85fbc61b Bisecting: 530 revisions left to test after this (roughly 9 steps) [306f208259ff7a89c022f1e5f5d2144b0ccb236c] dt-bindings: net: asix,ax88796c: allow SPI peripheral properties determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 306f208259ff7a89c022f1e5f5d2144b0ccb236c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6d37033346e53da812ec57190cffcc9d7d64baf5658c384ade18d7f53b4cedbe all runs: OK false negative chance: 0.000 # git bisect bad 306f208259ff7a89c022f1e5f5d2144b0ccb236c Bisecting: 250 revisions left to test after this (roughly 8 steps) [fab89bafa95b6f333b0e2dca0ae07a0b3600e954] virtio-net: support multi-buffer xdp determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit fab89bafa95b6f333b0e2dca0ae07a0b3600e954 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f3cd738ef8c6b60abb76b22e97eb2c205547f2a5c66b63d32835eea144dcfc16 all runs: OK false negative chance: 0.000 # git bisect bad fab89bafa95b6f333b0e2dca0ae07a0b3600e954 Bisecting: 125 revisions left to test after this (roughly 7 steps) [4a753ca5013d465694d6639fbe1378831a399bda] selftest: mptcp: exit from copyfd_io_poll() when receive SIGUSR1 determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 4a753ca5013d465694d6639fbe1378831a399bda gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a044867930884fb518c7597a8e8e43b7e1fb91bea568a0b698bb3202ee277387 all runs: OK false negative chance: 0.000 # git bisect bad 4a753ca5013d465694d6639fbe1378831a399bda Bisecting: 62 revisions left to test after this (roughly 6 steps) [4aea86b4033f92f01547e6d4388d4451ae9b0980] Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 4aea86b4033f92f01547e6d4388d4451ae9b0980 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b40795fc6ace5b86d8801d1915737fcf9fcad224d83036df1a31cf0fd2be9b26 all runs: OK false negative chance: 0.000 # git bisect bad 4aea86b4033f92f01547e6d4388d4451ae9b0980 Bisecting: 30 revisions left to test after this (roughly 5 steps) [a73bf9f2d969cbb04d5ca778f2a224060cda1027] bpf: reorganize struct bpf_reg_state fields determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit a73bf9f2d969cbb04d5ca778f2a224060cda1027 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 09eae569b8e4d3c33bfe9d5cce76d5bbb45206ca284a2bb492264e4331c0307a all runs: OK false negative chance: 0.000 # git bisect bad a73bf9f2d969cbb04d5ca778f2a224060cda1027 Bisecting: 14 revisions left to test after this (roughly 4 steps) [64f4660f691c61506828faef38ef374811fbbe71] Merge branch 'samples/bpf: fix LLVM compilation warning' determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 64f4660f691c61506828faef38ef374811fbbe71 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 33fb1bd5fee1203d1edc0c9ae1c376df780da9c49a20855dc3cd5b565b329d5a all runs: OK false negative chance: 0.000 # git bisect bad 64f4660f691c61506828faef38ef374811fbbe71 Bisecting: 7 revisions left to test after this (roughly 3 steps) [4fb877aaa179dcdb1676d55216482febaada457e] libbpf: Fix btf_dump's packed struct determination determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 4fb877aaa179dcdb1676d55216482febaada457e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 82d5029c08d90f08e89193aac28ae59af8bfc0ef52644b6d0d8a21d406a8f4ea all runs: crashed: possible deadlock in bpf_trace_printk representative crash: possible deadlock in bpf_trace_printk, types: [LOCKDEP] # git bisect good 4fb877aaa179dcdb1676d55216482febaada457e Bisecting: 3 revisions left to test after this (roughly 2 steps) [e2bb9e01d589f7fa82573aedd2765ff9b277816a] bpf: Remove trace_printk_lock determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit e2bb9e01d589f7fa82573aedd2765ff9b277816a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 57696719d5376681e616aecac69a6cd801439992fda11f4e4c813bd3f7d45c83 all runs: OK false negative chance: 0.000 # git bisect bad e2bb9e01d589f7fa82573aedd2765ff9b277816a Bisecting: 1 revision left to test after this (roughly 1 step) [78aa1cc9404399a15d2a1205329c6a06236f5378] bpf: Add struct for bin_args arg in bpf_bprintf_prepare determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 78aa1cc9404399a15d2a1205329c6a06236f5378 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: acb2340c0488fc543283bc22b14b7c7d9938178749b2374092bd82408e358cc8 all runs: crashed: possible deadlock in bpf_trace_printk representative crash: possible deadlock in bpf_trace_printk, types: [LOCKDEP] # git bisect good 78aa1cc9404399a15d2a1205329c6a06236f5378 Bisecting: 0 revisions left to test after this (roughly 0 steps) [f19a4050455aad847fb93f18dc1fe502eb60f989] bpf: Do cleanup in bpf_bprintf_cleanup only when needed determine whether the revision contains the guilty commit revision 78aa1cc9404399a15d2a1205329c6a06236f5378 crashed and is reachable testing commit f19a4050455aad847fb93f18dc1fe502eb60f989 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 096ddc9253667d8b990e217990779743584a27bb671785da3308386dedad7445 all runs: crashed: possible deadlock in bpf_trace_printk representative crash: possible deadlock in bpf_trace_printk, types: [LOCKDEP] # git bisect good f19a4050455aad847fb93f18dc1fe502eb60f989 e2bb9e01d589f7fa82573aedd2765ff9b277816a is the first bad commit commit e2bb9e01d589f7fa82573aedd2765ff9b277816a Author: Jiri Olsa Date: Thu Dec 15 22:44:30 2022 +0100 bpf: Remove trace_printk_lock Both bpf_trace_printk and bpf_trace_vprintk helpers use static buffer guarded with trace_printk_lock spin lock. The spin lock contention causes issues with bpf programs attached to contention_begin tracepoint [1][2]. Andrii suggested we could get rid of the contention by using trylock, but we could actually get rid of the spinlock completely by using percpu buffers the same way as for bin_args in bpf_bprintf_prepare function. Adding new return 'buf' argument to struct bpf_bprintf_data and making bpf_bprintf_prepare to return also the buffer for printk helpers. [1] https://lore.kernel.org/bpf/CACkBjsakT_yWxnSWr4r-0TpPvbKm9-OBmVUhJb7hV3hY8fdCkw@mail.gmail.com/ [2] https://lore.kernel.org/bpf/CACkBjsaCsTovQHFfkqJKto6S4Z8d02ud1D7MPESrHa1cVNNTrw@mail.gmail.com/ Reported-by: Hao Sun Suggested-by: Andrii Nakryiko Signed-off-by: Jiri Olsa Signed-off-by: Daniel Borkmann Acked-by: Yonghong Song Link: https://lore.kernel.org/bpf/20221215214430.1336195-4-jolsa@kernel.org include/linux/bpf.h | 3 +++ kernel/bpf/helpers.c | 31 +++++++++++++++++++------------ kernel/trace/bpf_trace.c | 20 ++++++-------------- 3 files changed, 28 insertions(+), 26 deletions(-) accumulated error probability: 0.00 culprit signature: 57696719d5376681e616aecac69a6cd801439992fda11f4e4c813bd3f7d45c83 parent signature: 096ddc9253667d8b990e217990779743584a27bb671785da3308386dedad7445 revisions tested: 25, total time: 5h39m56.832068673s (build: 1h39m57.28852776s, test: 3h50m32.656203251s) first good commit: e2bb9e01d589f7fa82573aedd2765ff9b277816a bpf: Remove trace_printk_lock recipients (to): ["daniel@iogearbox.net" "jolsa@kernel.org" "yhs@fb.com"] recipients (cc): []