ci2 starts bisection 2025-11-13 01:20:22.507432672 +0000 UTC m=+44299.523998026 bisecting fixing commit since 0bc96de781b4da716c8dbd248af4b26d8d8341f5 building syzkaller on 0b9605c8e9db737f9efc5a0557534eade4cbf844 ensuring issue is reproducible on original commit 0bc96de781b4da716c8dbd248af4b26d8d8341f5 testing commit 0bc96de781b4da716c8dbd248af4b26d8d8341f5 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 32d06fbb341d46089d3a2cceb4d5cf0b1f4fef7e7267c42eb3c8ba7b8ed430eb run #0: crashed: INFO: rcu detected stall in perf_event_open run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in perf_event_open run #3: crashed: INFO: rcu detected stall in perf_event_open run #4: crashed: INFO: rcu detected stall in perf_event_open run #5: crashed: INFO: rcu detected stall in perf_event_open run #6: crashed: INFO: rcu detected stall in perf_event_open run #7: crashed: INFO: rcu detected stall in perf_event_open run #8: crashed: INFO: rcu detected stall in smp_call_function run #9: crashed: INFO: rcu detected stall in syscall_enter_from_user_mode run #10: crashed: INFO: rcu detected stall in syscall_enter_from_user_mode 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 perf_event_open run #14: crashed: INFO: rcu detected stall in perf_event_open run #15: crashed: INFO: rcu detected stall in perf_event_open run #16: crashed: INFO: rcu detected stall in perf_event_open run #17: crashed: INFO: rcu detected stall in perf_event_open run #18: crashed: INFO: rcu detected stall in perf_event_open run #19: crashed: INFO: rcu detected stall in perf_event_open representative crash: INFO: rcu detected stall in perf_event_open, types: [HANG] check whether we can drop unnecessary instrumentation disabling configs for [bug_or_warning kasan locking atomic_sleep memleak ubsan], they are not needed testing commit 0bc96de781b4da716c8dbd248af4b26d8d8341f5 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 2e465c516f95844a927508d4e25a14cd552f39b4a099422e89fd549be88fc231 all runs: OK false negative chance: 0.000 kconfig minimization: base=3829 full=7618 leaves diff=2130 split chunks (needed=false): <2130> split chunk #0 of len 2130 into 5 parts testing without sub-chunk 1/5 testing commit 0bc96de781b4da716c8dbd248af4b26d8d8341f5 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 29c4c2301cff082190ca659e3def1b0929855627dcd3498e28a5ef5d8abcad80 run #0: crashed: INFO: rcu detected stall in perf_event_open run #1: crashed: INFO: rcu detected stall in smp_call_function run #2: ignore: lost connection to test machine run #3: crashed: INFO: rcu detected stall in perf_event_open run #4: crashed: INFO: rcu detected stall in perf_event_open run #5: crashed: INFO: rcu detected stall in perf_event_open run #6: crashed: INFO: rcu detected stall in perf_event_open run #7: crashed: INFO: rcu detected stall in smp_call_function run #8: crashed: INFO: rcu detected stall in smp_call_function run #9: crashed: INFO: rcu detected stall in smp_call_function representative crash: INFO: rcu detected stall in perf_event_open, types: [HANG] the chunk can be dropped testing without sub-chunk 2/5 testing commit 0bc96de781b4da716c8dbd248af4b26d8d8341f5 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: e1dadc1b34d824ec39cd08dad2bbd739ef77871459d7880a6d1bbb65f49e02a1 run #0: crashed: INFO: rcu detected stall in smp_call_function run #1: crashed: INFO: rcu detected stall in perf_event_open run #2: crashed: INFO: rcu detected stall in perf_event_open run #3: crashed: INFO: rcu detected stall in perf_event_open run #4: crashed: INFO: rcu detected stall in smp_call_function run #5: crashed: INFO: rcu detected stall in perf_event_open run #6: crashed: INFO: rcu detected stall in perf_event_open run #7: crashed: INFO: rcu detected stall in perf_event_open run #8: crashed: INFO: rcu detected stall in perf_event_open run #9: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in smp_call_function, types: [HANG] the chunk can be dropped testing without sub-chunk 3/5 testing commit 0bc96de781b4da716c8dbd248af4b26d8d8341f5 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 29651d7ef3609278a4f1f4746a069a3b8dba21ef176b654d8e2a4bcea8ec407c run #0: crashed: INFO: rcu detected stall in perf_event_open run #1: crashed: INFO: rcu detected stall in perf_event_open run #2: crashed: INFO: rcu detected stall in perf_event_open run #3: crashed: INFO: rcu detected stall in perf_event_open run #4: crashed: INFO: rcu detected stall in perf_event_open run #5: crashed: INFO: rcu detected stall in perf_event_open run #6: crashed: INFO: rcu detected stall in syscall_enter_from_user_mode run #7: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor1915637989" "root@10.128.1.81:./syz-executor1915637989"]: exit status 255 run #8: OK run #9: OK representative crash: INFO: rcu detected stall in perf_event_open, types: [HANG] the chunk can be dropped testing without sub-chunk 4/5 testing commit 0bc96de781b4da716c8dbd248af4b26d8d8341f5 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 8761a3dca498976599b38bc1f47ae6b730043ae41f602254decb3eec16b243c4 run #0: crashed: INFO: rcu detected stall in perf_event_open run #1: crashed: INFO: rcu detected stall in perf_event_open run #2: crashed: INFO: rcu detected stall in perf_event_open run #3: crashed: INFO: rcu detected stall in perf_event_open run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: INFO: rcu detected stall in perf_event_open, types: [HANG] the chunk can be dropped testing without sub-chunk 5/5 testing commit 0bc96de781b4da716c8dbd248af4b26d8d8341f5 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 0ed8498a8164fd3cf3ca588b19bc45985f3a4588cc5ee05688dac9dd2f80de38 all runs: OK false negative chance: 0.000 minimized to 426 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 NOP_USB_XCEIV 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_CATC USB_CDC_PHONET USB_CDNS3 USB_CDNS3_GADGET USB_CDNS3_HOST USB_CDNS3_PCI_WRAP USB_CDNSP_GADGET USB_CDNSP_HOST USB_CDNSP_PCI USB_CDNS_HOST USB_CDNS_SUPPORT USB_CHAOSKEY USB_CHIPIDEA USB_CHIPIDEA_GENERIC USB_CHIPIDEA_HOST USB_CHIPIDEA_MSM USB_CHIPIDEA_PCI USB_CHIPIDEA_UDC USB_CONFIGFS USB_CONFIGFS_ACM USB_CONFIGFS_ECM USB_CONFIGFS_ECM_SUBSET 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 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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_PCI_RENESAS USB_XHCI_PLATFORM USB_XUSBATM USB_YUREX USERFAULTFD USERIO 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_SILABS X86_SGX X86_SGX_KVM X86_X2APIC 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 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] determining the merge base between 0bc96de781b4da716c8dbd248af4b26d8d8341f5 and 24172e0d79900908cf5ebf366600616d29c9b417 830b3c68c1fb1e9176028d02ef86f3cf76aa2476/Linux 6.1 is a merge base, check if it has the bug testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 4690ea06d1859a0960fbd43d00a69efb1dc9bc7c4a130f9de3033c6ba82809cf all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] testing current HEAD 24172e0d79900908cf5ebf366600616d29c9b417 testing commit 24172e0d79900908cf5ebf366600616d29c9b417 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 57f3f8c3a4b4ed85c1f2a9337177e68b02617afa780a717d570f43e6c53ec217 all runs: OK false negative chance: 0.000 # git bisect start 24172e0d79900908cf5ebf366600616d29c9b417 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 Bisecting: 129657 revisions left to test after this (roughly 17 steps) [0c9f4ac808b017a0013cee92a30de980550145d5] Merge tag 'for-6.10/block-20240511' of git://git.kernel.dk/linux determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 0c9f4ac808b017a0013cee92a30de980550145d5 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: abd48eeb923aa3d714c0147c2c25f4734108b93c6083aeb2524d8fa7a215b4ca run #0: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #1: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #2: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #3: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #4: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #5: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #6: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #7: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #8: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #9: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #10: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #11: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #12: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #13: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #14: crashed: UBSAN: signed-integer-overflow in __ip_select_ident run #15: crashed: UBSAN: signed-integer-overflow in __ip_select_ident run #16: crashed: UBSAN: signed-integer-overflow in __ip_select_ident run #17: crashed: UBSAN: signed-integer-overflow in __ip_select_ident run #18: crashed: UBSAN: signed-integer-overflow in __ip_select_ident run #19: crashed: UBSAN: signed-integer-overflow in __ip_select_ident representative crash: UBSAN: signed-integer-overflow in __ip_select_ident, types: [UBSAN] unable to determine the verdict: 0 good runs (wanted 15), for bad wanted 10 in total, got 6 # git bisect skip 0c9f4ac808b017a0013cee92a30de980550145d5 Bisecting: 129596 revisions left to test after this (roughly 17 steps) [f29dcae96ec83d134040433b72ee7d9ce76ba3dc] Merge tag 'rtw-next-2024-06-04' of https://github.com/pkshih/rtw determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit f29dcae96ec83d134040433b72ee7d9ce76ba3dc gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 347bc72aa8e8c9a84ed6bd660be508fb551d49a585b4fb754979782f5ff7a551 run #0: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #1: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #2: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #3: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #4: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #5: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #6: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #7: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #8: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #9: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #10: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #11: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #12: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #13: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #14: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #15: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #16: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #17: basic kernel testing failed: UBSAN: signed-integer-overflow in __ip_select_ident run #18: crashed: UBSAN: signed-integer-overflow in __ip_select_ident run #19: crashed: UBSAN: signed-integer-overflow in __ip_select_ident representative crash: UBSAN: signed-integer-overflow in __ip_select_ident, types: [UBSAN] unable to determine the verdict: 0 good runs (wanted 15), for bad wanted 10 in total, got 2 # git bisect skip f29dcae96ec83d134040433b72ee7d9ce76ba3dc Bisecting: 129596 revisions left to test after this (roughly 17 steps) [760d7e719499d64beea62bfcf53938fb233bb6e7] Loongarch: Support loongarch avec determine whether the revision contains the guilty commit revision 0c9f4ac808b017a0013cee92a30de980550145d5 crashed and is reachable testing commit 760d7e719499d64beea62bfcf53938fb233bb6e7 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: c711a7d981bb2eba129c128cff2ccbb859cdea28434a06cd5c41a4e85c3fd916 all runs: boot failed: UBSAN: signed-integer-overflow in __cancel_work unable to determine the verdict: 0 good runs (wanted 15), for bad wanted 10 in total, got 0 # git bisect skip 760d7e719499d64beea62bfcf53938fb233bb6e7 Bisecting: 129596 revisions left to test after this (roughly 17 steps) [46876af3a4bbb58aa8fe0882f0f2b3674beb8402] drm/omap/hdmi5: switch to ->edid_read callback determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 46876af3a4bbb58aa8fe0882f0f2b3674beb8402 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 68f8219ec87730ece6006af8d159cf9c7712e01bf22389b20257de0128167a57 all runs: OK false negative chance: 0.000 # git bisect bad 46876af3a4bbb58aa8fe0882f0f2b3674beb8402 Bisecting: 55484 revisions left to test after this (roughly 16 steps) [1b722407a13b7f8658d2e26917791f32805980a2] Merge tag 'drm-next-2023-06-29' of git://anongit.freedesktop.org/drm/drm determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 1b722407a13b7f8658d2e26917791f32805980a2 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: e3c206eeb9c3580cb823daaee788ea39ab0ea84d3b795511a5bd6d49bc51390b run #0: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid run #1: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid run #2: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid run #3: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid run #4: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid run #5: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid run #6: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid run #7: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid run #8: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid run #9: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid run #10: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid run #11: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid run #12: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid run #13: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid run #14: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid run #15: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid run #16: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid run #17: basic kernel testing failed: UBSAN: array-index-out-of-bounds in corrupted run #18: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid run #19: basic kernel testing failed: UBSAN: array-index-out-of-bounds in alloc_pid unable to determine the verdict: 0 good runs (wanted 15), for bad wanted 10 in total, got 0 # git bisect skip 1b722407a13b7f8658d2e26917791f32805980a2 Bisecting: 55484 revisions left to test after this (roughly 16 steps) [dfee6788a02c44bbe82a02c58db846ea6edfc630] arm64: dts: qcom: msm8996-oneplus: correct UFS pad supply determine whether the revision contains the guilty commit revision 1b722407a13b7f8658d2e26917791f32805980a2 crashed and is reachable testing commit dfee6788a02c44bbe82a02c58db846ea6edfc630 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 0a52bb94f74fd46aec16dbfbb7c26e80ec5eab05bd08c5b3d961b5605ac6968a all runs: OK false negative chance: 0.000 # git bisect bad dfee6788a02c44bbe82a02c58db846ea6edfc630 Bisecting: 38320 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 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: e4ca73eb678ee8d2aa3d7e5e28b928e638ea0d1d20df8f29d962d8047a0f7814 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 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: c73da99539d690662643d0ea29ddd34a966eb36a322bba60d768263d30e0c84c all runs: crashed: INFO: rcu detected stall in corrupted representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # 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 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 582b6b4ba2ebea7183ed54584585f839561b1a57625a9c50b1aa1ec15ed8ad77 run #0: crashed: INFO: rcu detected stall in corrupted 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 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 perf_event_open 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: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 60e2bf7d10e9cd5641f4a5183a19058d9a2c8782 Bisecting: 4819 revisions left to test after this (roughly 12 steps) [672d2dae19012cb2c40fdf36711ee3b5f5420724] Merge tag 'soc-defconfig-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc determine whether the revision contains the guilty commit revision 8ca8d89b43caf9a02a18414d6eeff966d2b14512 crashed and is reachable testing commit 672d2dae19012cb2c40fdf36711ee3b5f5420724 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: e523bd41936e951b6d59b1df4041cd4b1acbb8a4bcf798083de90afc12c4bc77 all runs: OK false negative chance: 0.000 # git bisect bad 672d2dae19012cb2c40fdf36711ee3b5f5420724 Bisecting: 2367 revisions left to test after this (roughly 11 steps) [7e27cb6ad4d85fc8bac2a2a896da62ef66b8598e] cgroup/cpuset: Make cpuset_attach_task() skip subpartitions CPUs for top_cpuset determine whether the revision contains the guilty commit revision 8ca8d89b43caf9a02a18414d6eeff966d2b14512 crashed and is reachable testing commit 7e27cb6ad4d85fc8bac2a2a896da62ef66b8598e gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 7a1e265bf04f3c033d551bc471b7828df787d56b6af2b663b834e7e260b8eb0e run #0: crashed: INFO: rcu detected stall in corrupted 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 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: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor2160417527" "root@10.128.0.72:./syz-executor2160417527"]: exit status 255 representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 7e27cb6ad4d85fc8bac2a2a896da62ef66b8598e Bisecting: 1186 revisions left to test after this (roughly 10 steps) [0bcc4025550403ae28d2984bddacafbca0a2f112] netfs: Fix netfs_extract_iter_to_sg() for ITER_UBUF/IOVEC determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 0bcc4025550403ae28d2984bddacafbca0a2f112 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 2a6c92bec50018dfaa1fa30f85a0011b42ae6a1c5912cdf27df25b26182e0ab9 run #0: crashed: INFO: rcu detected stall in corrupted 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 smp_call_function run #9: crashed: INFO: rcu detected stall in corrupted run #10: crashed: INFO: rcu detected stall in corrupted run #11: crashed: INFO: rcu detected stall in perf_event_open 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: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor830662640" "root@10.128.10.42:./syz-executor830662640"]: exit status 255 representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 0bcc4025550403ae28d2984bddacafbca0a2f112 Bisecting: 559 revisions left to test after this (roughly 9 steps) [5dfb75e842e0ef59fc7bf307e5c52eab215bdb4c] Merge tag 'rcu.6.4.april5.2023.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux determine whether the revision contains the guilty commit revision 0bcc4025550403ae28d2984bddacafbca0a2f112 crashed and is reachable testing commit 5dfb75e842e0ef59fc7bf307e5c52eab215bdb4c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 365595e502f5342ecd55b864f44acafc21e366d63633aac0b379d90632bb418d run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in perf_event_open run #3: crashed: INFO: rcu detected stall in syscall_enter_from_user_mode run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in perf_event_open run #6: crashed: INFO: rcu detected stall in perf_event_open run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in smp_call_function run #9: crashed: INFO: rcu detected stall in corrupted 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: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 5dfb75e842e0ef59fc7bf307e5c52eab215bdb4c Bisecting: 274 revisions left to test after this (roughly 8 steps) [e7989789c686e83f032acf2c4363c2c153876b96] Merge tag 'timers-core-2023-04-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip determine whether the revision contains the guilty commit revision 0bcc4025550403ae28d2984bddacafbca0a2f112 crashed and is reachable testing commit e7989789c686e83f032acf2c4363c2c153876b96 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: b5748369fd777239e1fb19085ee972a5c76b6ea20a8bc1019f7524bacad7b630 all runs: OK false negative chance: 0.000 # git bisect bad e7989789c686e83f032acf2c4363c2c153876b96 Bisecting: 150 revisions left to test after this (roughly 7 steps) [97adb49f052e70455c3529509885f8aa3b40c370] Merge tag 'v6.4/vfs.open' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs determine whether the revision contains the guilty commit revision 5dfb75e842e0ef59fc7bf307e5c52eab215bdb4c crashed and is reachable testing commit 97adb49f052e70455c3529509885f8aa3b40c370 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: bea6aeb4a5b22e54904d71872ae754bb3d67b7031e62f0757a2c9e4a5b88a8c6 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in perf_event_open 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 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: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor172699398" "root@10.128.1.141:./syz-executor172699398"]: exit status 255 representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 97adb49f052e70455c3529509885f8aa3b40c370 Bisecting: 76 revisions left to test after this (roughly 6 steps) [e94ee641f9cef2502adfe5e0c264b271420c7ab5] Merge tag 'edac_updates_for_v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras determine whether the revision contains the guilty commit revision 0bcc4025550403ae28d2984bddacafbca0a2f112 crashed and is reachable testing commit e94ee641f9cef2502adfe5e0c264b271420c7ab5 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 531c1e6d4bf2fe12d2e83aec0e916ccbbdbd752085298c238bfd7c254433749f run #0: crashed: INFO: rcu detected stall in corrupted 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 syscall_exit_to_user_mode 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 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 perf_event_open 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: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good e94ee641f9cef2502adfe5e0c264b271420c7ab5 Bisecting: 40 revisions left to test after this (roughly 5 steps) [15bbeec0fe9f1e910cb6a173005a02b6b4582f3c] Merge tag 'core-entry-2023-04-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip determine whether the revision contains the guilty commit revision 0bcc4025550403ae28d2984bddacafbca0a2f112 crashed and is reachable testing commit 15bbeec0fe9f1e910cb6a173005a02b6b4582f3c gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 6bfece94059de9739151279de66464e7154b72e11e6368eb56b0a025fbcc10ba run #0: crashed: INFO: rcu detected stall in corrupted 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 run #10: crashed: INFO: rcu detected stall in perf_event_open 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 perf_event_open 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: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 15bbeec0fe9f1e910cb6a173005a02b6b4582f3c Bisecting: 22 revisions left to test after this (roughly 4 steps) [275232c0b4064b85fd48532dff1a9b2764d67617] Merge branch irq/loongarch-fixes-6.4 into irq/irqchip-next determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 275232c0b4064b85fd48532dff1a9b2764d67617 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: ffcba47c8df417e00664abdca35bfd5154f82e156c44f8934ff4a79786264ba1 run #0: crashed: INFO: rcu detected stall in corrupted 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 perf_event_open 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 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 perf_event_open run #16: crashed: INFO: rcu detected stall in smp_call_function 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: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 275232c0b4064b85fd48532dff1a9b2764d67617 Bisecting: 10 revisions left to test after this (roughly 4 steps) [263dda24fff0957f6b0a9abde2809122f7f0fad8] selftests/proc: Assert clock_gettime(CLOCK_BOOTTIME) VS /proc/uptime monotonicity determine whether the revision contains the guilty commit revision 8ca8d89b43caf9a02a18414d6eeff966d2b14512 crashed and is reachable testing commit 263dda24fff0957f6b0a9abde2809122f7f0fad8 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: a0b434ebd2d9c85ca21767592b99d638e071bc5978dc0abfec243be1bd423687 run #0: crashed: INFO: rcu detected stall in corrupted 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 smp_call_function run #9: crashed: INFO: rcu detected stall in corrupted 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: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 263dda24fff0957f6b0a9abde2809122f7f0fad8 Bisecting: 5 revisions left to test after this (roughly 3 steps) [2ff1b0839ddd514be4752c64c1c6facf91ff3a56] Merge branch irq/misc-6.4 into irq/irqchip-next determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 2ff1b0839ddd514be4752c64c1c6facf91ff3a56 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 6e43db21ba875c4be70ce7b92da1b51954db66b923048dc023299ebb493931ff run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in perf_event_open run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in perf_event_open 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 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 perf_event_open 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: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor3697998708" "root@10.128.0.80:./syz-executor3697998708"]: exit status 255 representative crash: INFO: rcu detected stall in corrupted, types: [HANG] # git bisect good 2ff1b0839ddd514be4752c64c1c6facf91ff3a56 Bisecting: 2 revisions left to test after this (roughly 2 steps) [f37202aa6e5d6d39a48f744d962fd2bf3a8a452b] Merge tag 'irqchip-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core determine whether the revision contains the guilty commit revision 275232c0b4064b85fd48532dff1a9b2764d67617 crashed and is reachable testing commit f37202aa6e5d6d39a48f744d962fd2bf3a8a452b gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 3a239cd884da80f3c0d69ea444aca4fdae120bd6d11964bea645baa799b28c3d all runs: OK false negative chance: 0.000 # git bisect bad f37202aa6e5d6d39a48f744d962fd2bf3a8a452b Bisecting: 0 revisions left to test after this (roughly 1 step) [803235982b8c086184d04798d9079d236f352f88] genirq: Update affinity of secondary threads determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit 803235982b8c086184d04798d9079d236f352f88 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 23d193910e7900b47944b875b5cfc3d93eb48e6018deb1bb0b53bc162afba2b9 all runs: OK false negative chance: 0.000 # git bisect bad 803235982b8c086184d04798d9079d236f352f88 Bisecting: 0 revisions left to test after this (roughly 0 steps) [f4bf3ca2e5cba655824b6e0893a98dfb33ed24e5] softirq: Add trace points for tasklet entry/exit determine whether the revision contains the guilty commit revision 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 crashed and is reachable testing commit f4bf3ca2e5cba655824b6e0893a98dfb33ed24e5 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: aba939980d677eec16ba2494680e91f0eadf2b37dcee18a1c9535a3f6f2cd53c all runs: OK false negative chance: 0.000 # git bisect bad f4bf3ca2e5cba655824b6e0893a98dfb33ed24e5 f4bf3ca2e5cba655824b6e0893a98dfb33ed24e5 is the first bad commit commit f4bf3ca2e5cba655824b6e0893a98dfb33ed24e5 Author: Lingutla Chandrasekhar Date: Fri Apr 7 23:05:26 2023 +0000 softirq: Add trace points for tasklet entry/exit Tasklets are supposed to finish their work quickly and should not block the current running process, but it is not guaranteed that they do so. Currently softirq_entry/exit can be used to analyse the total tasklets execution time, but that's not helpful to track individual tasklets execution time. That makes it hard to identify tasklet functions, which take more time than expected. Add tasklet_entry/exit trace point support to track individual tasklet execution. Trivial usage example: # echo 1 > /sys/kernel/debug/tracing/events/irq/tasklet_entry/enable # echo 1 > /sys/kernel/debug/tracing/events/irq/tasklet_exit/enable # cat /sys/kernel/debug/tracing/trace # tracer: nop # # entries-in-buffer/entries-written: 4/4 #P:4 # # _-----=> irqs-off/BH-disabled # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / _-=> migrate-disable # |||| / delay # TASK-PID CPU# ||||| TIMESTAMP FUNCTION # | | | ||||| | | -0 [003] ..s1. 314.011428: tasklet_entry: tasklet=0xffffa01ef8db2740 function=tcp_tasklet_func -0 [003] ..s1. 314.011432: tasklet_exit: tasklet=0xffffa01ef8db2740 function=tcp_tasklet_func -0 [003] ..s1. 314.017369: tasklet_entry: tasklet=0xffffa01ef8db2740 function=tcp_tasklet_func -0 [003] ..s1. 314.017371: tasklet_exit: tasklet=0xffffa01ef8db2740 function=tcp_tasklet_func Signed-off-by: Lingutla Chandrasekhar Signed-off-by: J. Avila Signed-off-by: John Stultz Signed-off-by: Thomas Gleixner Reviewed-by: Steven Rostedt (Google) Link: https://lore.kernel.org/r/20230407230526.1685443-1-jstultz@google.com [elavila: Port to android-mainline] [jstultz: Rebased to upstream, cut unused trace points, added comments for the tracepoints, reworded commit] include/trace/events/irq.h | 47 ++++++++++++++++++++++++++++++++++++++++++++++ kernel/softirq.c | 9 +++++++-- 2 files changed, 54 insertions(+), 2 deletions(-) accumulated error probability: 0.00 parent commit 7e364e56293bb98cae1b55fd835f5991c4e96e7d wasn't tested testing commit 7e364e56293bb98cae1b55fd835f5991c4e96e7d gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: f1187f5ddab1f00f57f0c8595ddf0c6ec6ee69cf7fadf311eadea8a94f2838b4 culprit signature: aba939980d677eec16ba2494680e91f0eadf2b37dcee18a1c9535a3f6f2cd53c parent signature: f1187f5ddab1f00f57f0c8595ddf0c6ec6ee69cf7fadf311eadea8a94f2838b4 reproducer is flaky (0.40 repro chance estimate) revisions tested: 32, total time: 11h1m46.063659728s (build: 4h9m40.191680446s, test: 6h25m33.209844646s) first good commit: f4bf3ca2e5cba655824b6e0893a98dfb33ed24e5 softirq: Add trace points for tasklet entry/exit recipients (to): ["clingutla@codeaurora.org" "elavila@google.com" "jstultz@google.com" "rostedt@goodmis.org" "tglx@linutronix.de"] recipients (cc): []