ci2 starts bisection 2025-04-05 10:26:31.688965286 +0000 UTC m=+28723.173692218 bisecting fixing commit since 0c935c049b5c196b83b968c72d348ae6fff83ea2 building syzkaller on 0808a665bc75ab0845906bfeca0d12fb520ae6eb ensuring issue is reproducible on original commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6c7caff35ff8e22e838b60882808d48a79d7f37a449511c00ce9673f22da2660 run #0: crashed: WARNING in bpf_probe_read_compat run #1: crashed: WARNING in bpf_probe_read_compat run #2: crashed: WARNING in bpf_probe_read_compat run #3: crashed: WARNING in bpf_probe_read_compat run #4: crashed: WARNING in bpf_probe_read_compat run #5: crashed: WARNING in bpf_probe_read_compat run #6: crashed: WARNING in bpf_probe_read_compat run #7: crashed: possible deadlock in console_unlock run #8: crashed: possible deadlock in enqueue_task run #9: crashed: possible deadlock in console_unlock run #10: crashed: possible deadlock in console_unlock run #11: crashed: WARNING in bpf_probe_read_compat run #12: crashed: possible deadlock in console_unlock run #13: crashed: WARNING in bpf_probe_read_compat run #14: crashed: WARNING in bpf_probe_read_compat run #15: crashed: possible deadlock in console_unlock run #16: crashed: WARNING in bpf_probe_read_compat run #17: crashed: possible deadlock in console_unlock run #18: crashed: WARNING in bpf_probe_read_compat run #19: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING LOCKDEP] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN KASAN ATOMIC_SLEEP HANG], they are not needed testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 48463d8acf236767851f01cab1592518717dadcd9722f6c1fd556d3fc32a8d68 all runs: OK false negative chance: 0.000 kconfig minimization: base=3706 full=7305 leaves diff=2039 split chunks (needed=false): <2039> split chunk #0 of len 2039 into 5 parts testing without sub-chunk 1/5 testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5ebdafd8ee11f3011b07e0c953a0c986fe831b7ed297c4d3dfd42dad4f13928a run #0: crashed: WARNING in bpf_probe_read_compat run #1: crashed: possible deadlock in console_unlock run #2: crashed: WARNING in bpf_probe_read_compat run #3: crashed: WARNING in bpf_probe_read_compat run #4: crashed: WARNING in bpf_probe_read_compat run #5: crashed: WARNING in bpf_probe_read_compat run #6: crashed: possible deadlock in console_unlock run #7: crashed: possible deadlock in console_unlock run #8: crashed: possible deadlock in console_unlock run #9: crashed: possible deadlock in console_unlock representative crash: WARNING in bpf_probe_read_compat, types: [WARNING LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f88ae37945e8ca2a578bddc460397e00ca8d84a071e6bc113aa531e5f0e45eba run #0: crashed: WARNING in bpf_probe_read_compat run #1: crashed: possible deadlock in console_unlock run #2: crashed: WARNING in bpf_probe_read_compat run #3: crashed: WARNING in bpf_probe_read_compat run #4: crashed: WARNING in bpf_probe_read_compat run #5: crashed: possible deadlock in console_unlock run #6: crashed: WARNING in bpf_probe_read_compat run #7: crashed: possible deadlock in console_unlock run #8: crashed: possible deadlock in console_unlock run #9: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING LOCKDEP] the chunk can be dropped testing without sub-chunk 3/5 testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e0cf524b5f74c36a7656170b577a1bcb63d7fa78e2b6411bc2c6063227d8ca14 run #0: crashed: WARNING in bpf_probe_read_compat run #1: crashed: possible deadlock in console_unlock run #2: crashed: WARNING in bpf_probe_read_compat run #3: crashed: possible deadlock in console_unlock run #4: crashed: possible deadlock in console_unlock run #5: crashed: possible deadlock in console_unlock run #6: crashed: possible deadlock in console_unlock run #7: crashed: possible deadlock in console_unlock run #8: crashed: WARNING in bpf_probe_read_compat run #9: crashed: WARNING in bpf_probe_read_compat representative crash: possible deadlock in console_unlock, types: [LOCKDEP WARNING] the chunk can be dropped testing without sub-chunk 4/5 testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d5d062b1ec66cebaefd379c402f137e0ecb2b1b634fba604184382f5d65057cc all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] the chunk can be dropped testing without sub-chunk 5/5 testing commit 0c935c049b5c196b83b968c72d348ae6fff83ea2 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3e0bfcd4ce13fd5d87e0c94a901afcb8b5ff60a6615dd96a0a9e3caaf9158c37 run #0: ignore: 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 false negative chance: 0.000 minimized to 407 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CMA CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_LZO CRYPTO_ZSTD DVB_CORE EXTCON FB FRONTSWAP GPIOLIB HID_ZEROPLUS I2C_MUX IIO IRQ_REMAP 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_HOTPLUG_SPARSE 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_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_CONN_GPIO 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_HAPS USB_DWC3_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T USB_EHCI_FSL USB_EHCI_HCD_PLATFORM USB_EHCI_ROOT_HUB_TT USB_EHSET_TEST_FIXTURE USB_EMI26 USB_EMI62 USB_EPSON2888 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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_PCI_RENESAS USB_XHCI_PLATFORM USB_XUSBATM USB_YUREX USB_ZR364XX USERFAULTFD USERIO USERMODE_DRIVER USER_RETURN_NOTIFIER U_SERIAL_CONSOLE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA 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 VIDEOBUF_GEN VIDEOBUF_VMALLOC VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 VIDEO_CPIA2 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_TM6000 VIDEO_TM6000_ALSA VIDEO_TM6000_DVB VIDEO_TUNER VIDEO_TVEEPROM VIDEO_USBTV VIDEO_V4L2 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 X86_SGX X86_X2APIC X86_X32 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 XILLYBUS_CLASS XILLYUSB XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZBUD ZEROPLUS_FF ZONEFS_FS ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZBUD] determining the merge base between 0c935c049b5c196b83b968c72d348ae6fff83ea2 and a8662bcd2ff152bfbc751cab20f33053d74d0963 8bb7eca972ad531c9b149c0a51ab43a417385813/Linux 5.15 is a merge base, check if it has the bug testing commit 8bb7eca972ad531c9b149c0a51ab43a417385813 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0d4269c1785a87385062afa9aa5ff682cfcd6d05c9cadd66ba2f8f4185dd5a5d all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] testing current HEAD a8662bcd2ff152bfbc751cab20f33053d74d0963 testing commit a8662bcd2ff152bfbc751cab20f33053d74d0963 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ef8ca6c2dd1d5c3d7d68b41e1d69b84e0c82fdd7b5eb9a954f9161e25313ff58 all runs: OK false negative chance: 0.000 # git bisect start a8662bcd2ff152bfbc751cab20f33053d74d0963 8bb7eca972ad531c9b149c0a51ab43a417385813 Bisecting: 153098 revisions left to test after this (roughly 17 steps) [44aeec836da880c73a8deb2c7735c6e7c36f47c3] Merge tag 'char-misc-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 44aeec836da880c73a8deb2c7735c6e7c36f47c3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8da84c6b32b7c819ad5484ad3afbbdf6297d286ecbb7504482b862446a349655 all runs: OK false negative chance: 0.000 # git bisect bad 44aeec836da880c73a8deb2c7735c6e7c36f47c3 Bisecting: 76540 revisions left to test after this (roughly 16 steps) [e140f731f9807035e967c401198171f316744696] 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 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit e140f731f9807035e967c401198171f316744696 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cd25689031c7efb101227e1ffc665ed0ae88e8e5409e915f7b533a4d38557d92 run #0: boot failed: can't ssh into the instance run #1: boot failed: general protection fault in rcu_core run #2: boot failed: general protection fault in driver_register run #3: boot failed: general protection fault in ipv6_add_dev run #4: boot failed: INFO: trying to register non-static key in exit_itimers run #5: boot failed: BUG: unable to handle kernel paging request in kernel_execve run #6: boot failed: general protection fault in driver_register run #7: boot failed: general protection fault in driver_register run #8: boot failed: kernel panic: corrupted stack end in call_usermodehelper_exec_async run #9: boot failed: BUG: unable to handle kernel paging request in kernfs_iop_get_link unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0 # git bisect skip e140f731f9807035e967c401198171f316744696 Bisecting: 76477 revisions left to test after this (roughly 16 steps) [d785610f052d7456497cdec2a2406f6d4b16569f] Merge tag 'powerpc-6.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux determine whether the revision contains the guilty commit revision e140f731f9807035e967c401198171f316744696 crashed and is reachable testing commit d785610f052d7456497cdec2a2406f6d4b16569f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cc94187336623621b9b350d1c6e22a17624ac5b96ba2b0a6ef8314bcb569bc71 run #0: boot failed: stack segment fault in mm_alloc run #1: boot failed: BUG: unable to handle kernel paging request in kernel_execve run #2: boot failed: general protection fault in driver_register run #3: boot failed: WARNING in rcu_core run #4: boot failed: general protection fault in driver_register run #5: boot failed: general protection fault in driver_register run #6: boot failed: general protection fault in __tty_alloc_driver run #7: boot failed: BUG: unable to handle kernel paging request in kernel_execve run #8: boot failed: KASAN: out-of-bounds Read in __schedule run #9: boot failed: BUG: stack guard page was hit in corrupted unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0 # git bisect skip d785610f052d7456497cdec2a2406f6d4b16569f Bisecting: 76477 revisions left to test after this (roughly 16 steps) [aea23e7c464bfdec04b52cf61edb62030e9e0d0a] Merge tag 'pull-work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit aea23e7c464bfdec04b52cf61edb62030e9e0d0a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2e21244d9a46de2c1eb560c6a5a07cd290eb211f3c9bd5bd7d730aeb5af9a175 run #0: boot failed: general protection fault in driver_register run #1: boot failed: general protection fault in __tty_alloc_driver run #2: boot failed: general protection fault in __tty_alloc_driver run #3: boot failed: general protection fault in driver_register run #4: boot failed: BUG: unable to handle kernel paging request in kernel_execve run #5: boot failed: BUG: unable to handle kernel paging request in kernel_execve run #6: boot failed: stack segment fault in dup_fd run #7: boot failed: general protection fault in driver_register run #8: boot failed: KASAN: slab-out-of-bounds Write in vunmap_range_noflush run #9: boot failed: kernel BUG in qlink_to_cache unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0 # git bisect skip aea23e7c464bfdec04b52cf61edb62030e9e0d0a Bisecting: 76477 revisions left to test after this (roughly 16 steps) [0c04b83d95e02c9def6e2db49fc2cab618faf949] staging: rts5208: split long line of code determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 0c04b83d95e02c9def6e2db49fc2cab618faf949 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5e51ba60840628244d1c62e2d4d6bfcfcd6a935a27745833f3ecdff4100bf1f2 all runs: boot failed: WARNING in __netif_set_xps_queue unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0 # git bisect skip 0c04b83d95e02c9def6e2db49fc2cab618faf949 Bisecting: 76477 revisions left to test after this (roughly 16 steps) [332019e23a51db1aa46fec695a9a763445fbe09f] Merge tag '5.20-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6 determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 332019e23a51db1aa46fec695a9a763445fbe09f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8c42792322e5f1248cb94dd9e20a63de3cacc05f6600c8526915c092efb96e74 run #0: boot failed: can't ssh into the instance run #1: boot failed: BUG: unable to handle kernel paging request in kernel_execve run #2: boot failed: general protection fault in driver_register run #3: boot failed: general protection fault in driver_register run #4: boot failed: general protection fault in driver_register run #5: boot failed: general protection fault in driver_register run #6: boot failed: general protection fault in driver_register run #7: boot failed: general protection fault in rcu_core run #8: boot failed: general protection fault in __switch_to run #9: boot failed: general protection fault in __switch_to unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0 # git bisect skip 332019e23a51db1aa46fec695a9a763445fbe09f Bisecting: 76477 revisions left to test after this (roughly 16 steps) [3d05818707bb2cf133ccdcd29f2d5585b5bc1298] bpf: Wait for busy refill_work when destroying bpf memory allocator determine whether the revision contains the guilty commit revision aea23e7c464bfdec04b52cf61edb62030e9e0d0a crashed and is reachable testing commit 3d05818707bb2cf133ccdcd29f2d5585b5bc1298 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 538414902d0e29271b91e261b51775b365dc9b65a65c6f7841bed49f1c02111a all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good 3d05818707bb2cf133ccdcd29f2d5585b5bc1298 Bisecting: 35717 revisions left to test after this (roughly 15 steps) [28e335208ce90c2cca9990543983b97ccc66f302] Merge tag 'xfs-6.3-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux determine whether the revision contains the guilty commit revision 332019e23a51db1aa46fec695a9a763445fbe09f crashed and is reachable testing commit 28e335208ce90c2cca9990543983b97ccc66f302 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3ffcba789f8d73fa923674193c3820cf8f4f830a36ec6e73414c25d6e95d3056 all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good 28e335208ce90c2cca9990543983b97ccc66f302 Bisecting: 17854 revisions left to test after this (roughly 14 steps) [1c15ca4e4efaddb78f83eed31eeee34c522c3ae2] Merge tag 'sound-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound determine whether the revision contains the guilty commit revision e140f731f9807035e967c401198171f316744696 crashed and is reachable testing commit 1c15ca4e4efaddb78f83eed31eeee34c522c3ae2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2cb91a13a3dd8a1b4fe4faf1791ab594ab09ee03725790e3d4d57b790e4a1423 all runs: OK false negative chance: 0.000 # git bisect bad 1c15ca4e4efaddb78f83eed31eeee34c522c3ae2 Bisecting: 8931 revisions left to test after this (roughly 13 steps) [3b1f2be527ce04e7d8dce6fad6be16fa59058713] Merge tag 'drm-intel-fixes-2023-04-19' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 3b1f2be527ce04e7d8dce6fad6be16fa59058713 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c7c158a73e7fa36ba5af49e0ed858f6dd97353556e04f5251f7a1ca9281e8efe all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good 3b1f2be527ce04e7d8dce6fad6be16fa59058713 Bisecting: 4462 revisions left to test after this (roughly 12 steps) [c5c06e278019892391ef4d47933796cacfec29cb] Merge tag 'mmc-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc determine whether the revision contains the guilty commit revision 332019e23a51db1aa46fec695a9a763445fbe09f crashed and is reachable testing commit c5c06e278019892391ef4d47933796cacfec29cb gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cb7e8f249dc9fd615c716f55ede080770a78eb3c957a119fe59f65fb44534bca all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good c5c06e278019892391ef4d47933796cacfec29cb Bisecting: 2232 revisions left to test after this (roughly 11 steps) [9610a8dc0aaaf146630ff5566b5d8804fcd22d15] Merge branch 'tsnep-xdp-socket-zero-copy-support' determine whether the revision contains the guilty commit revision e140f731f9807035e967c401198171f316744696 crashed and is reachable testing commit 9610a8dc0aaaf146630ff5566b5d8804fcd22d15 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 608980bf00d00544ed22cb082dc50105b5c075e1158228254fd73b09a470b6d0 all runs: OK false negative chance: 0.000 # git bisect bad 9610a8dc0aaaf146630ff5566b5d8804fcd22d15 Bisecting: 1114 revisions left to test after this (roughly 10 steps) [d48304326e5a34cc8be236d084dc2003d11f4c16] wifi: iwlwifi: mvm: add DSM_FUNC_ENABLE_6E value to debugfs determine whether the revision contains the guilty commit revision e140f731f9807035e967c401198171f316744696 crashed and is reachable testing commit d48304326e5a34cc8be236d084dc2003d11f4c16 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e0c039eda1234b97172004e08a106990c565f95ea7ac782615558c4318d09bd9 all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good d48304326e5a34cc8be236d084dc2003d11f4c16 Bisecting: 557 revisions left to test after this (roughly 9 steps) [09930f1fb8750d5f4e668ab40733ab63cab58ed7] ARM: dts: qcom: ipq8064-rb3011: Add Switch LED for each port determine whether the revision contains the guilty commit revision e140f731f9807035e967c401198171f316744696 crashed and is reachable testing commit 09930f1fb8750d5f4e668ab40733ab63cab58ed7 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 31de451635252f67508c0da9f243ed9ca453bbdd32cb7ba1dedc1743018925e0 all runs: OK false negative chance: 0.000 # git bisect bad 09930f1fb8750d5f4e668ab40733ab63cab58ed7 Bisecting: 278 revisions left to test after this (roughly 8 steps) [bbc73e6855b80144cd43d165696f1ff56d6192c9] Merge branch 'Add FOU support for externally controlled ipip devices' determine whether the revision contains the guilty commit revision 332019e23a51db1aa46fec695a9a763445fbe09f crashed and is reachable testing commit bbc73e6855b80144cd43d165696f1ff56d6192c9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7d523e2bec12a3ecf08776e79820cc8a8555db154fb6cb3b20ad6a99aee1344c all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good bbc73e6855b80144cd43d165696f1ff56d6192c9 Bisecting: 139 revisions left to test after this (roughly 7 steps) [c54876cd5961ce0f8e74807f79a6739cd6b35ddf] net/sched: pass netlink extack to mqprio and taprio offload determine whether the revision contains the guilty commit revision 28e335208ce90c2cca9990543983b97ccc66f302 crashed and is reachable testing commit c54876cd5961ce0f8e74807f79a6739cd6b35ddf gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b862b3ad5f7fbfa5039bb8b16594a2834a0f13d6474010d74fc54d09041328ea all runs: OK false negative chance: 0.000 # git bisect bad c54876cd5961ce0f8e74807f79a6739cd6b35ddf Bisecting: 69 revisions left to test after this (roughly 6 steps) [301f227fc860624d37ba5dae9da57dcf371268db] net: piggy back on the memory barrier in bql when waking queues determine whether the revision contains the guilty commit revision e140f731f9807035e967c401198171f316744696 crashed and is reachable testing commit 301f227fc860624d37ba5dae9da57dcf371268db gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8e73185c823cd8d80e8fff358286c435373f745db613e01131ebb8cf718207db all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good 301f227fc860624d37ba5dae9da57dcf371268db Bisecting: 34 revisions left to test after this (roughly 5 steps) [36647b206c014a0bf3ab17bc88f2c840eefd796c] bnxt: use READ_ONCE/WRITE_ONCE for ring indexes determine whether the revision contains the guilty commit revision 3d05818707bb2cf133ccdcd29f2d5585b5bc1298 crashed and is reachable testing commit 36647b206c014a0bf3ab17bc88f2c840eefd796c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0d1fbf9cdddc8ecb2d792b4c95438500d652b6a1fca86fdb0d9c51c372582c7c all runs: crashed: WARNING in bpf_probe_read_compat representative crash: WARNING in bpf_probe_read_compat, types: [WARNING] # git bisect good 36647b206c014a0bf3ab17bc88f2c840eefd796c Bisecting: 16 revisions left to test after this (roughly 4 steps) [07de32655bb4e4518cdb8ce4e2e0d6ed49f2ceb0] net: mscc: ocelot: debugging print for statistics regions determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 07de32655bb4e4518cdb8ce4e2e0d6ed49f2ceb0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 918859dcea1ebd75f4d1601c5f2581031bd9702df8c277eb40248714835a5236 all runs: OK false negative chance: 0.000 # git bisect bad 07de32655bb4e4518cdb8ce4e2e0d6ed49f2ceb0 Bisecting: 8 revisions left to test after this (roughly 3 steps) [1ba83f505c53d35eda892ac7f108ef1189da6fa8] xsk: Elide base_addr comparison in xp_unaligned_validate_desc determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 1ba83f505c53d35eda892ac7f108ef1189da6fa8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8e1b780681ae1d4acfd31b794b94e8e8a50c24c17bd17c3e384738bc65fd9ec9 all runs: OK false negative chance: 0.000 # git bisect bad 1ba83f505c53d35eda892ac7f108ef1189da6fa8 Bisecting: 3 revisions left to test after this (roughly 2 steps) [2995f9a8d427b9ff6f3cf4e85c0f9d4456ef324d] selftests/bpf: Keep the loop in bpf_testmod_loop_test determine whether the revision contains the guilty commit revision d785610f052d7456497cdec2a2406f6d4b16569f crashed and is reachable testing commit 2995f9a8d427b9ff6f3cf4e85c0f9d4456ef324d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0a0e6baa5860366422b521b6c8b2a055318b96cdf1b0e8d93af7fe8190bf53ab all runs: OK false negative chance: 0.000 # git bisect bad 2995f9a8d427b9ff6f3cf4e85c0f9d4456ef324d Bisecting: 2 revisions left to test after this (roughly 1 step) [5a674611d116a5fc28c5429beea2b78c6e2933ef] selftests/bpf: Fix use of uninitialized op_name in log tests determine whether the revision contains the guilty commit revision bbc73e6855b80144cd43d165696f1ff56d6192c9 crashed and is reachable testing commit 5a674611d116a5fc28c5429beea2b78c6e2933ef gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1ff0289da9da07449404ff373e506ca5645c7e786ce143e71da6fc70a95a3132 all runs: OK false negative chance: 0.000 # git bisect bad 5a674611d116a5fc28c5429beea2b78c6e2933ef Bisecting: 0 revisions left to test after this (roughly 0 steps) [d319f344561de23e810515d109c7278919bff7b0] mm: Fix copy_from_user_nofault(). determine whether the revision contains the guilty commit revision e140f731f9807035e967c401198171f316744696 crashed and is reachable testing commit d319f344561de23e810515d109c7278919bff7b0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4e63aee6ec6d127ae907295a8ef4a53c9b1bd357f062ce90a8e7890574f08245 all runs: OK false negative chance: 0.000 # git bisect bad d319f344561de23e810515d109c7278919bff7b0 d319f344561de23e810515d109c7278919bff7b0 is the first bad commit commit d319f344561de23e810515d109c7278919bff7b0 Author: Alexei Starovoitov Date: Mon Apr 10 19:43:44 2023 +0200 mm: Fix copy_from_user_nofault(). There are several issues with copy_from_user_nofault(): - access_ok() is designed for user context only and for that reason it has WARN_ON_IN_IRQ() which triggers when bpf, kprobe, eprobe and perf on ppc are calling it from irq. - it's missing nmi_uaccess_okay() which is a nop on all architectures except x86 where it's required. The comment in arch/x86/mm/tlb.c explains the details why it's necessary. Calling copy_from_user_nofault() from bpf, [ke]probe without this check is not safe. - __copy_from_user_inatomic() under CONFIG_HARDENED_USERCOPY is calling check_object_size()->__check_object_size()->check_heap_object()->find_vmap_area()->spin_lock() which is not safe to do from bpf, [ke]probe and perf due to potential deadlock. Fix all three issues. At the end the copy_from_user_nofault() becomes equivalent to copy_from_user_nmi() from safety point of view with a difference in the return value. Reported-by: Hsin-Wei Hung Signed-off-by: Alexei Starovoitov Signed-off-by: Florian Lehner Tested-by: Hsin-Wei Hung Tested-by: Florian Lehner Link: https://lore.kernel.org/r/20230410174345.4376-2-dev@der-flo.net Signed-off-by: Alexei Starovoitov mm/maccess.c | 16 +++++++++++----- mm/usercopy.c | 2 +- 2 files changed, 12 insertions(+), 6 deletions(-) accumulated error probability: 0.00 culprit signature: 4e63aee6ec6d127ae907295a8ef4a53c9b1bd357f062ce90a8e7890574f08245 parent signature: 7d523e2bec12a3ecf08776e79820cc8a8555db154fb6cb3b20ad6a99aee1344c revisions tested: 32, total time: 8h55m8.712029291s (build: 3h53m22.455158041s, test: 4h41m16.325734902s) first good commit: d319f344561de23e810515d109c7278919bff7b0 mm: Fix copy_from_user_nofault(). recipients (to): ["ast@kernel.org" "dev@der-flo.net" "hsinweih@uci.edu"] recipients (cc): []