ci starts bisection 2024-08-08 13:14:59.626324726 +0000 UTC m=+28410.277847441 bisecting fixing commit since f99c5f563c174a49ea1cbf4754539b05cfde40c4 building syzkaller on c8349e48534ea6d8f01515335d95de8ebf5da8df ensuring issue is reproducible on original commit f99c5f563c174a49ea1cbf4754539b05cfde40c4 testing commit f99c5f563c174a49ea1cbf4754539b05cfde40c4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6d14ab186b4ceaa54fd55386ef118fd07d0ac41b7d67279a9f489f2926ab768b all runs: crashed: WARNING in __xdp_reg_mem_model 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 f99c5f563c174a49ea1cbf4754539b05cfde40c4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b3c36477193e95b26a55d1d8c30d13afe1ee8e9d4d18ae7154aa92a6309ea452 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 [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed kconfig minimization: base=4001 full=7972 leaves diff=2009 split chunks (needed=false): <2009> split chunk #0 of len 2009 into 5 parts testing without sub-chunk 1/5 disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit f99c5f563c174a49ea1cbf4754539b05cfde40c4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 20e737256cc4d17bf0e498d6b5155be752eeec1d9c4a93032e44fb6f0a5d6e81 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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit f99c5f563c174a49ea1cbf4754539b05cfde40c4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cb08e6166cfcee342f689d87e4f4543e10fd31c2382463c3427ae28906d75e62 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 [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit f99c5f563c174a49ea1cbf4754539b05cfde40c4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9b2bdcdc50286decd9ab9247be3eeba4bef51d88238efdfe90f3aced9c74430e 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 [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit f99c5f563c174a49ea1cbf4754539b05cfde40c4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0492dfe942b391dc0c635c9858f02def5ece3343949d7c2ec03efaffe209bd13 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 5/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit f99c5f563c174a49ea1cbf4754539b05cfde40c4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f2309c53f80723844de64ce7d89b74320f34a2a5b61fe7d48a1d5bca105ab877 run #0: crashed: lost connection to test machine run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: lost connection to test machine, types: [UNKNOWN] unable to determine the verdict: 9 good runs (wanted 5), for bad wanted 5 in total, got 10 minimized to 401 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_ZSTD DVB_CORE EXTCON FB GPIOLIB HAVE_KVM HID_ZEROPLUS HW_CONSOLE I2C_MUX IIO IOMMUFD 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_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_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 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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_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 UVC_COMMON 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_DEVICE_CDEV 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_TASK 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_CMDLINE 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_NOMODESET VIDEO_PVRUSB2 VIDEO_PVRUSB2_DVB VIDEO_PVRUSB2_SYSFS VIDEO_SAA711X VIDEO_STK1160 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_USER_SHADOW_STACK X86_X2APIC X86_X32_ABI 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 ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_DEFAULT_ON ZSWAP_SHRINKER_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZSMALLOC] disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing current HEAD b928e7d19dfd8a336e13ec0d21e1d60dc285efd5 testing commit b928e7d19dfd8a336e13ec0d21e1d60dc285efd5 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2e7db6f322d5efe0e222157a2d718e3215ad8b798c84f9267ea547e62dc479ed all runs: OK false negative chance: 0.000 # git bisect start b928e7d19dfd8a336e13ec0d21e1d60dc285efd5 f99c5f563c174a49ea1cbf4754539b05cfde40c4 Bisecting: 19045 revisions left to test after this (roughly 14 steps) [0cc6f45cecb46cefe89c17ec816dc8cd58a2229a] Merge tag 'iommu-updates-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu determine whether the revision contains the guilty commit revision f99c5f563c174a49ea1cbf4754539b05cfde40c4 crashed and is reachable testing commit 0cc6f45cecb46cefe89c17ec816dc8cd58a2229a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4814d6d38de89c21e8595c9825be05ce395d7383dd36004b658419360675aa40 all runs: crashed: WARNING in __xdp_reg_mem_model representative crash: WARNING in __xdp_reg_mem_model, types: [WARNING] # git bisect good 0cc6f45cecb46cefe89c17ec816dc8cd58a2229a Bisecting: 8666 revisions left to test after this (roughly 13 steps) [51835949dda3783d4639cfa74ce13a3c9829de00] Merge tag 'net-next-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next determine whether the revision contains the guilty commit revision f99c5f563c174a49ea1cbf4754539b05cfde40c4 crashed and is reachable testing commit 51835949dda3783d4639cfa74ce13a3c9829de00 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5b4ab8ec4a8cd2690dadb726f810760a4ef08b2d2ee88f6e42b9626aad767311 all runs: OK false negative chance: 0.000 # git bisect bad 51835949dda3783d4639cfa74ce13a3c9829de00 Bisecting: 5186 revisions left to test after this (roughly 12 steps) [fd19d4a492af77b1e8fb0439781a3048d1d1f554] Merge tag 'net-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net determine whether the revision contains the guilty commit revision f99c5f563c174a49ea1cbf4754539b05cfde40c4 crashed and is reachable testing commit fd19d4a492af77b1e8fb0439781a3048d1d1f554 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 59a8fa7f7eee0da72b00680bf8f9c36001641914302e1de20be78ae0f3a7f392 all runs: OK false negative chance: 0.000 # git bisect bad fd19d4a492af77b1e8fb0439781a3048d1d1f554 Bisecting: 2647 revisions left to test after this (roughly 11 steps) [f3033eb79136dd27b17e7a192fac0155ceab5eb8] Merge tag 'leds-next-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds determine whether the revision contains the guilty commit revision f99c5f563c174a49ea1cbf4754539b05cfde40c4 crashed and is reachable testing commit f3033eb79136dd27b17e7a192fac0155ceab5eb8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cfb00687c24dbf29bdda79ea244d5161ecd9c08f355ee9099ee665b6b678145d 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] # git bisect good f3033eb79136dd27b17e7a192fac0155ceab5eb8 Bisecting: 1323 revisions left to test after this (roughly 10 steps) [c0b98ac1cc104f48763cdb27b1e9ac25fd81fc90] ipv6: sr: block BH in seg6_output_core() and seg6_input_core() determine whether the revision contains the guilty commit revision f99c5f563c174a49ea1cbf4754539b05cfde40c4 crashed and is reachable testing commit c0b98ac1cc104f48763cdb27b1e9ac25fd81fc90 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0b8a9bfda02a41887ba8deb011cd3fd09e032446b7e25c2398e63551259b90b4 all runs: crashed: WARNING in __xdp_reg_mem_model representative crash: WARNING in __xdp_reg_mem_model, types: [WARNING] # git bisect good c0b98ac1cc104f48763cdb27b1e9ac25fd81fc90 Bisecting: 679 revisions left to test after this (roughly 9 steps) [fd88e181d80579afbc56b9d69ef884c81abc2df0] Merge tag 'nfs-for-6.10-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs determine whether the revision contains the guilty commit revision f99c5f563c174a49ea1cbf4754539b05cfde40c4 crashed and is reachable testing commit fd88e181d80579afbc56b9d69ef884c81abc2df0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9049e6745e8a0dc1753b60180e553504ce3fe1faea632e8b7a19a95a8170d896 all runs: crashed: WARNING in __xdp_reg_mem_model representative crash: WARNING in __xdp_reg_mem_model, types: [WARNING] # git bisect good fd88e181d80579afbc56b9d69ef884c81abc2df0 Bisecting: 335 revisions left to test after this (roughly 8 steps) [d5a7fc58da039903b332041e8c67daae36f08b50] Merge tag 'net-6.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net determine whether the revision contains the guilty commit revision f3033eb79136dd27b17e7a192fac0155ceab5eb8 crashed and is reachable testing commit d5a7fc58da039903b332041e8c67daae36f08b50 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ee16d992d4e68f878bd4189207745ae10d20ccb1199024ada46e95094496a248 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: OK run #9: OK representative crash: WARNING in __xdp_reg_mem_model, types: [WARNING] # git bisect good d5a7fc58da039903b332041e8c67daae36f08b50 Bisecting: 168 revisions left to test after this (roughly 7 steps) [0971e82ea34c5e01cd3e68d231caa81780e8cafb] Merge tag 'fixes-2024-06-23' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock determine whether the revision contains the guilty commit revision f99c5f563c174a49ea1cbf4754539b05cfde40c4 crashed and is reachable testing commit 0971e82ea34c5e01cd3e68d231caa81780e8cafb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3d36e3295839920a4271cb664d4a6b3bbb97852d36b9281912c7ccb9827c3520 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] # git bisect good 0971e82ea34c5e01cd3e68d231caa81780e8cafb Bisecting: 69 revisions left to test after this (roughly 6 steps) [3c1d29e53d34537063e60f5eafe0482780a1735a] Merge tag 'sound-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound determine whether the revision contains the guilty commit revision f99c5f563c174a49ea1cbf4754539b05cfde40c4 crashed and is reachable testing commit 3c1d29e53d34537063e60f5eafe0482780a1735a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: acc84ed1e1733e68edbc52b83951a68e60c1080620bee362e7ac2059ee7d4229 all runs: crashed: WARNING in __xdp_reg_mem_model representative crash: WARNING in __xdp_reg_mem_model, types: [WARNING] # git bisect good 3c1d29e53d34537063e60f5eafe0482780a1735a Bisecting: 35 revisions left to test after this (roughly 5 steps) [7931d32955e09d0a11b1fe0b6aac1bfa061c005c] netfilter: nf_tables: fully validate NFT_DATA_VALUE on store to data registers determine whether the revision contains the guilty commit revision f99c5f563c174a49ea1cbf4754539b05cfde40c4 crashed and is reachable testing commit 7931d32955e09d0a11b1fe0b6aac1bfa061c005c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ca9a12d578eabd52772fa5905e6f84f4e66be4d57afb94d0bbd1b0bdfa6fe8b1 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] # git bisect good 7931d32955e09d0a11b1fe0b6aac1bfa061c005c Bisecting: 17 revisions left to test after this (roughly 4 steps) [84b767f9e34fdb143c09e66a2a20722fc2921821] ionic: use dev_consume_skb_any outside of napi determine whether the revision contains the guilty commit revision 0cc6f45cecb46cefe89c17ec816dc8cd58a2229a crashed and is reachable testing commit 84b767f9e34fdb143c09e66a2a20722fc2921821 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a7b12b6e460b635d0da41c1cddd16f3baf6b04c0a55b33bf5a108b530ba64d93 all runs: OK false negative chance: 0.000 # git bisect bad 84b767f9e34fdb143c09e66a2a20722fc2921821 Bisecting: 8 revisions left to test after this (roughly 3 steps) [cfa1a2329a691ffd991fcf7248a57d752e712881] bpf: Fix overrunning reservations in ringbuf determine whether the revision contains the guilty commit revision f3033eb79136dd27b17e7a192fac0155ceab5eb8 crashed and is reachable testing commit cfa1a2329a691ffd991fcf7248a57d752e712881 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7cbff75472c7def4bdfab826e0de06fb355773fa6d4bfaf992329ebc02d94243 all runs: crashed: WARNING in __xdp_reg_mem_model representative crash: WARNING in __xdp_reg_mem_model, types: [WARNING] # git bisect good cfa1a2329a691ffd991fcf7248a57d752e712881 Bisecting: 4 revisions left to test after this (roughly 2 steps) [7e9f79428372c6eab92271390851be34ab26bfb4] xdp: Remove WARN() from __xdp_reg_mem_model() determine whether the revision contains the guilty commit revision 0cc6f45cecb46cefe89c17ec816dc8cd58a2229a crashed and is reachable testing commit 7e9f79428372c6eab92271390851be34ab26bfb4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b151d38d0018f0e9297898a806c0ffc1fd93dabd176d477e8354b7a4a00e4eca all runs: OK false negative chance: 0.000 # git bisect bad 7e9f79428372c6eab92271390851be34ab26bfb4 Bisecting: 1 revision left to test after this (roughly 1 step) [2b2efe1937ca9f8815884bd4dcd5b32733025103] bpf: Fix may_goto with negative offset. determine whether the revision contains the guilty commit revision 0cc6f45cecb46cefe89c17ec816dc8cd58a2229a crashed and is reachable testing commit 2b2efe1937ca9f8815884bd4dcd5b32733025103 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8a288c3a60baff032d40006038926b3f1178e6d33bfbcd57ca89efa89f4d896a 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] # git bisect good 2b2efe1937ca9f8815884bd4dcd5b32733025103 Bisecting: 0 revisions left to test after this (roughly 0 steps) [280e4ebffd16ea1b55dc09761448545e216f60a9] selftests/bpf: Add tests for may_goto with negative offset. determine whether the revision contains the guilty commit revision 2b2efe1937ca9f8815884bd4dcd5b32733025103 crashed and is reachable testing commit 280e4ebffd16ea1b55dc09761448545e216f60a9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e90fa1e9f112e5ea0f36bfee4c71c4daddcba10d3b8ca65331e6fa18750e47ae all runs: crashed: WARNING in __xdp_reg_mem_model representative crash: WARNING in __xdp_reg_mem_model, types: [WARNING] # git bisect good 280e4ebffd16ea1b55dc09761448545e216f60a9 7e9f79428372c6eab92271390851be34ab26bfb4 is the first bad commit commit 7e9f79428372c6eab92271390851be34ab26bfb4 Author: Daniil Dulov Date: Mon Jun 24 11:07:47 2024 +0300 xdp: Remove WARN() from __xdp_reg_mem_model() 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 net/core/xdp.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) accumulated error probability: 0.00 culprit signature: b151d38d0018f0e9297898a806c0ffc1fd93dabd176d477e8354b7a4a00e4eca parent signature: e90fa1e9f112e5ea0f36bfee4c71c4daddcba10d3b8ca65331e6fa18750e47ae revisions tested: 23, total time: 5h4m5.801978387s (build: 2h17m21.989857052s, test: 2h31m43.384173872s) first good commit: 7e9f79428372c6eab92271390851be34ab26bfb4 xdp: Remove WARN() from __xdp_reg_mem_model() recipients (to): ["d.dulov@aladdin.ru" "daniel@iogearbox.net" "hawk@kernel.org"] recipients (cc): []