ci2 starts bisection 2024-08-05 20:45:25.844219573 +0000 UTC m=+41710.031980763 bisecting fixing commit since cd5d98c0556cd790f78a3ba26afc9d2f896163e4 building syzkaller on 0d592ce46ebc504d579c07e5bc3f7f3f2038c4cf ensuring issue is reproducible on original commit cd5d98c0556cd790f78a3ba26afc9d2f896163e4 testing commit cd5d98c0556cd790f78a3ba26afc9d2f896163e4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4b53f3c37d9833f28da990f392d0a467ebcbcef41704abff8dc359bc1ef98f16 run #0: crashed: WARNING in __xdp_reg_mem_model run #1: crashed: WARNING in __xdp_reg_mem_model run #2: crashed: WARNING in __xdp_reg_mem_model run #3: crashed: WARNING in __xdp_reg_mem_model run #4: crashed: WARNING in __xdp_reg_mem_model run #5: crashed: WARNING in __xdp_reg_mem_model run #6: crashed: WARNING in __xdp_reg_mem_model run #7: crashed: WARNING in __xdp_reg_mem_model run #8: crashed: WARNING in __xdp_reg_mem_model run #9: crashed: WARNING in __xdp_reg_mem_model run #10: crashed: WARNING in __xdp_reg_mem_model run #11: crashed: WARNING in __xdp_reg_mem_model run #12: crashed: WARNING in __xdp_reg_mem_model run #13: crashed: WARNING in __xdp_reg_mem_model run #14: crashed: WARNING in __xdp_reg_mem_model run #15: crashed: WARNING in __xdp_reg_mem_model run #16: crashed: WARNING in __xdp_reg_mem_model run #17: crashed: WARNING in __xdp_reg_mem_model run #18: crashed: WARNING in __xdp_reg_mem_model run #19: OK representative crash: WARNING in __xdp_reg_mem_model, types: [WARNING] check whether we can drop unnecessary instrumentation disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed testing commit cd5d98c0556cd790f78a3ba26afc9d2f896163e4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f1d225d83aa8dce9fef88993ba5e2f965d8cfedc9546b025f12dbf71d38756fa all runs: crashed: WARNING in __xdp_reg_mem_model representative crash: WARNING in __xdp_reg_mem_model, types: [WARNING] the bug reproduces without the instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed kconfig minimization: base=3822 full=7457 leaves diff=1989 split chunks (needed=false): <1989> split chunk #0 of len 1989 into 5 parts testing without sub-chunk 1/5 disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit cd5d98c0556cd790f78a3ba26afc9d2f896163e4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 06ee5a36531a64a507947b34877f149dc218441624c499406dd56fb7bbfba868 all runs: crashed: WARNING in __xdp_reg_mem_model representative crash: WARNING in __xdp_reg_mem_model, types: [WARNING] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit cd5d98c0556cd790f78a3ba26afc9d2f896163e4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 429a9497616d7b40b06dad915a2cee950bab9b48132a16a9633365313153b20a all runs: crashed: WARNING in __xdp_reg_mem_model representative crash: WARNING in __xdp_reg_mem_model, types: [WARNING] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed testing commit cd5d98c0556cd790f78a3ba26afc9d2f896163e4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 27a88773072373e7256d752275d533e6d23f35e55cbeb5043db31fcef85e7d83 run #0: crashed: WARNING in __xdp_reg_mem_model run #1: crashed: WARNING in __xdp_reg_mem_model run #2: crashed: WARNING in __xdp_reg_mem_model run #3: crashed: WARNING in __xdp_reg_mem_model run #4: crashed: WARNING in __xdp_reg_mem_model run #5: crashed: WARNING in __xdp_reg_mem_model run #6: crashed: WARNING in __xdp_reg_mem_model run #7: crashed: WARNING in __xdp_reg_mem_model run #8: crashed: WARNING in __xdp_reg_mem_model run #9: OK representative crash: WARNING in __xdp_reg_mem_model, types: [WARNING] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit cd5d98c0556cd790f78a3ba26afc9d2f896163e4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6b50dccc7d8d8cbcfeaba50a541ab1f82fa0120eaa96d46be3f689665faf790a all runs: crashed: WARNING in __xdp_reg_mem_model representative crash: WARNING in __xdp_reg_mem_model, types: [WARNING] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit cd5d98c0556cd790f78a3ba26afc9d2f896163e4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: afa2f8f0ff7b82b630ab255fd8ea880f7584a0889dfb2cd58abbb5c76a36adc5 all runs: OK false negative chance: 0.000 minimized to 397 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_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 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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 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_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZBUD] disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing current HEAD 48d525b0e4634c487cf46a41c1e2824e9ee258ce testing commit 48d525b0e4634c487cf46a41c1e2824e9ee258ce gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7c446bc707c86017c4a9e68e7be91974c7a7299d0288267751dd9b8eab5682bb all runs: OK false negative chance: 0.000 # git bisect start 48d525b0e4634c487cf46a41c1e2824e9ee258ce cd5d98c0556cd790f78a3ba26afc9d2f896163e4 Bisecting: 1205 revisions left to test after this (roughly 10 steps) [ca32605565f28fd095bb12c2f62708cbbdf49ce3] af_unix: Set sk->sk_state under unix_state_lock() for truly disconencted peer. determine whether the revision contains the guilty commit revision cd5d98c0556cd790f78a3ba26afc9d2f896163e4 crashed and is reachable testing commit ca32605565f28fd095bb12c2f62708cbbdf49ce3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 77d274982abbef575d369170e603c3a5240d5f62f7447baf9b16e99c89ba6a9a all runs: crashed: WARNING in __xdp_reg_mem_model representative crash: WARNING in __xdp_reg_mem_model, types: [WARNING] # git bisect good ca32605565f28fd095bb12c2f62708cbbdf49ce3 Bisecting: 602 revisions left to test after this (roughly 9 steps) [366340a2c8fffdfd4cbb5eb8a03ef38cf8074575] USB: serial: option: add Rolling RW350-GL variants determine whether the revision contains the guilty commit revision cd5d98c0556cd790f78a3ba26afc9d2f896163e4 crashed and is reachable testing commit 366340a2c8fffdfd4cbb5eb8a03ef38cf8074575 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e3d3c5be03e97a357423f5f3e1704e48bf3e0667f06ed13f0bfcbf12ef69b7e2 all runs: OK false negative chance: 0.000 # git bisect bad 366340a2c8fffdfd4cbb5eb8a03ef38cf8074575 Bisecting: 301 revisions left to test after this (roughly 8 steps) [8154edd62a18913e40a98080d48a09d6494b6834] perf script: Show also errors for --insn-trace option determine whether the revision contains the guilty commit revision cd5d98c0556cd790f78a3ba26afc9d2f896163e4 crashed and is reachable testing commit 8154edd62a18913e40a98080d48a09d6494b6834 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 49e087fde8617510175b242bf0fbd5f146468a653ccf03d38373af66a8bc5163 all runs: crashed: WARNING in __xdp_reg_mem_model representative crash: WARNING in __xdp_reg_mem_model, types: [WARNING] # git bisect good 8154edd62a18913e40a98080d48a09d6494b6834 Bisecting: 150 revisions left to test after this (roughly 7 steps) [63d202d948bb6d3a28cd8e8b96b160fa53e18baa] IB/core: Implement a limit on UMAD receive List determine whether the revision contains the guilty commit revision cd5d98c0556cd790f78a3ba26afc9d2f896163e4 crashed and is reachable testing commit 63d202d948bb6d3a28cd8e8b96b160fa53e18baa gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c9a6db6af26377c59c9ec522df4a2ec7b039acb5cf20891c45c23b5b5462970f all runs: OK false negative chance: 0.000 # git bisect bad 63d202d948bb6d3a28cd8e8b96b160fa53e18baa Bisecting: 75 revisions left to test after this (roughly 6 steps) [3ae15c0238ec3a2850aa47d51326a3d8fa1ee193] parisc: use generic sys_fanotify_mark implementation determine whether the revision contains the guilty commit revision cd5d98c0556cd790f78a3ba26afc9d2f896163e4 crashed and is reachable testing commit 3ae15c0238ec3a2850aa47d51326a3d8fa1ee193 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2816fd1238e476c0095a8e8d3480fe219b499ac960ad550c49b3aa7c3e0ba3a4 all runs: OK false negative chance: 0.000 # git bisect bad 3ae15c0238ec3a2850aa47d51326a3d8fa1ee193 Bisecting: 37 revisions left to test after this (roughly 5 steps) [aecaaf8abd145de217fda37a9d580423ef864c92] net: phy: micrel: add Microchip KSZ 9477 to the device table determine whether the revision contains the guilty commit revision cd5d98c0556cd790f78a3ba26afc9d2f896163e4 crashed and is reachable testing commit aecaaf8abd145de217fda37a9d580423ef864c92 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c4be867d2d8d40c43801b8213f3a3469916dc972cc56ea0d1450e1a54473fed9 all runs: crashed: WARNING in __xdp_reg_mem_model representative crash: WARNING in __xdp_reg_mem_model, types: [WARNING] # git bisect good aecaaf8abd145de217fda37a9d580423ef864c92 Bisecting: 18 revisions left to test after this (roughly 4 steps) [b30f3197a6cd080052d5d4973f9a6b479fd9fff5] bpf: Mark bpf prog stack with kmsan_unposion_memory in interpreter mode determine whether the revision contains the guilty commit revision aecaaf8abd145de217fda37a9d580423ef864c92 crashed and is reachable testing commit b30f3197a6cd080052d5d4973f9a6b479fd9fff5 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e2df8307b6d922fe8bb646f1d93f257b66ba836d8958cb7f76c0e45d4130c964 all runs: OK false negative chance: 0.000 # git bisect bad b30f3197a6cd080052d5d4973f9a6b479fd9fff5 Bisecting: 9 revisions left to test after this (roughly 3 steps) [736c74dc608eddf6bdb2317931221847ee79e091] tcp: fix tcp_rcv_fastopen_synack() to enter TCP_CA_Loss for failed TFO determine whether the revision contains the guilty commit revision aecaaf8abd145de217fda37a9d580423ef864c92 crashed and is reachable testing commit 736c74dc608eddf6bdb2317931221847ee79e091 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6f98311c0b8f5bf653dc30bcdac5a110861cad31813212c395abb64b343efa61 all runs: OK false negative chance: 0.000 # git bisect bad 736c74dc608eddf6bdb2317931221847ee79e091 Bisecting: 4 revisions left to test after this (roughly 2 steps) [f75c21bf730af0c5e69348cf5999efa7781743e4] net: dsa: microchip: fix wrong register write when masking interrupt determine whether the revision contains the guilty commit revision aecaaf8abd145de217fda37a9d580423ef864c92 crashed and is reachable testing commit f75c21bf730af0c5e69348cf5999efa7781743e4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6e9f2eb526be6eac2f307d42fac31210b72155aa0cf74ed04702b53b884399e2 all runs: OK false negative chance: 0.000 # git bisect bad f75c21bf730af0c5e69348cf5999efa7781743e4 Bisecting: 1 revision left to test after this (roughly 1 step) [4e0c539ee265d5c6e7fa7d229cd4aa7bc01816e2] xdp: Remove WARN() from __xdp_reg_mem_model() determine whether the revision contains the guilty commit revision 8154edd62a18913e40a98080d48a09d6494b6834 crashed and is reachable testing commit 4e0c539ee265d5c6e7fa7d229cd4aa7bc01816e2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a771a7aa87c7a50cd0f196887abdbdc6375ad3b45329f31727a4506dfa4f931c all runs: OK false negative chance: 0.000 # git bisect bad 4e0c539ee265d5c6e7fa7d229cd4aa7bc01816e2 Bisecting: 0 revisions left to test after this (roughly 0 steps) [75fabdc911e45695c6d15deb6ef28ccdd5fa6222] net: dsa: microchip: use collision based back pressure mode determine whether the revision contains the guilty commit revision aecaaf8abd145de217fda37a9d580423ef864c92 crashed and is reachable testing commit 75fabdc911e45695c6d15deb6ef28ccdd5fa6222 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: aff2ec5b5117347ac92ecd41c82e9e81b39ce01911574c8047fa774bd9f8b66c all runs: crashed: WARNING in __xdp_reg_mem_model representative crash: WARNING in __xdp_reg_mem_model, types: [WARNING] # git bisect good 75fabdc911e45695c6d15deb6ef28ccdd5fa6222 4e0c539ee265d5c6e7fa7d229cd4aa7bc01816e2 is the first bad commit commit 4e0c539ee265d5c6e7fa7d229cd4aa7bc01816e2 Author: Daniil Dulov Date: Mon Jun 24 11:07:47 2024 +0300 xdp: Remove WARN() from __xdp_reg_mem_model() [ Upstream commit 7e9f79428372c6eab92271390851be34ab26bfb4 ] syzkaller reports a warning in __xdp_reg_mem_model(). The warning occurs only if __mem_id_init_hash_table() returns an error. It returns the error in two cases: 1. memory allocation fails; 2. rhashtable_init() fails when some fields of rhashtable_params struct are not initialized properly. The second case cannot happen since there is a static const rhashtable_params struct with valid fields. So, warning is only triggered when there is a problem with memory allocation. Thus, there is no sense in using WARN() to handle this error and it can be safely removed. WARNING: CPU: 0 PID: 5065 at net/core/xdp.c:299 __xdp_reg_mem_model+0x2d9/0x650 net/core/xdp.c:299 CPU: 0 PID: 5065 Comm: syz-executor883 Not tainted 6.8.0-syzkaller-05271-gf99c5f563c17 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:__xdp_reg_mem_model+0x2d9/0x650 net/core/xdp.c:299 Call Trace: xdp_reg_mem_model+0x22/0x40 net/core/xdp.c:344 xdp_test_run_setup net/bpf/test_run.c:188 [inline] bpf_test_run_xdp_live+0x365/0x1e90 net/bpf/test_run.c:377 bpf_prog_test_run_xdp+0x813/0x11b0 net/bpf/test_run.c:1267 bpf_prog_test_run+0x33a/0x3b0 kernel/bpf/syscall.c:4240 __sys_bpf+0x48d/0x810 kernel/bpf/syscall.c:5649 __do_sys_bpf kernel/bpf/syscall.c:5738 [inline] __se_sys_bpf kernel/bpf/syscall.c:5736 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5736 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 Found by Linux Verification Center (linuxtesting.org) with syzkaller. Fixes: 8d5d88527587 ("xdp: rhashtable with allocator ID to pointer mapping") Signed-off-by: Daniil Dulov Signed-off-by: Daniel Borkmann Acked-by: Jesper Dangaard Brouer Link: https://lore.kernel.org/all/20240617162708.492159-1-d.dulov@aladdin.ru Link: https://lore.kernel.org/bpf/20240624080747.36858-1-d.dulov@aladdin.ru Signed-off-by: Sasha Levin net/core/xdp.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) accumulated error probability: 0.00 culprit signature: a771a7aa87c7a50cd0f196887abdbdc6375ad3b45329f31727a4506dfa4f931c parent signature: aff2ec5b5117347ac92ecd41c82e9e81b39ce01911574c8047fa774bd9f8b66c revisions tested: 19, total time: 4h25m3.972279361s (build: 1h48m55.418332306s, test: 2h29m52.841659764s) first good commit: 4e0c539ee265d5c6e7fa7d229cd4aa7bc01816e2 xdp: Remove WARN() from __xdp_reg_mem_model() recipients (to): ["d.dulov@aladdin.ru" "daniel@iogearbox.net" "hawk@kernel.org" "sashal@kernel.org"] recipients (cc): []