ci2 starts bisection 2025-03-01 12:11:34.893627332 +0000 UTC m=+79534.766339297 bisecting fixing commit since f4f677285b389e3d1bead19ad6b806527bf693f3 building syzkaller on 8bdc0f220628c9347b3581fead4c026272439799 ensuring issue is reproducible on original commit f4f677285b389e3d1bead19ad6b806527bf693f3 testing commit f4f677285b389e3d1bead19ad6b806527bf693f3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9c70bced81117b418ec4b6445a862f047391d20082fb234e928c65678c542e5a all runs: crashed: WARNING: suspicious RCU usage in get_callchain_entry representative crash: WARNING: suspicious RCU usage in get_callchain_entry, types: [LOCKDEP] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing commit f4f677285b389e3d1bead19ad6b806527bf693f3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 57c56ed990878c4ee6a58a73ecf95d11abbfabe103d2de0888a95ece8d485869 all runs: crashed: WARNING: suspicious RCU usage in get_callchain_entry representative crash: WARNING: suspicious RCU usage in get_callchain_entry, types: [LOCKDEP] the bug reproduces without the instrumentation disabling configs for [BUG KASAN ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed kconfig minimization: base=3823 full=7455 leaves diff=1986 split chunks (needed=false): <1986> split chunk #0 of len 1986 into 5 parts testing without sub-chunk 1/5 disabling configs for [KASAN ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit f4f677285b389e3d1bead19ad6b806527bf693f3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1772ff3adceec481aef1317c353ebec0d6cae831a2698bf3a56a5fca7a3163b0 all runs: crashed: WARNING: suspicious RCU usage in get_callchain_entry representative crash: WARNING: suspicious RCU usage in get_callchain_entry, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit f4f677285b389e3d1bead19ad6b806527bf693f3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 86d947edf17cc4f9cf446265f2281da83ae9552ee7e26268901b39ea58e90b8b all runs: crashed: WARNING: suspicious RCU usage in get_callchain_entry representative crash: WARNING: suspicious RCU usage in get_callchain_entry, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [BUG KASAN ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit f4f677285b389e3d1bead19ad6b806527bf693f3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a3c092e40a96e809fb320a2d92c93d941c7ce7924488b3b558cd096ec06e516b all runs: crashed: WARNING: suspicious RCU usage in get_callchain_entry representative crash: WARNING: suspicious RCU usage in get_callchain_entry, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed testing commit f4f677285b389e3d1bead19ad6b806527bf693f3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1b0c19f57174980720d3c4bfdaae4e53a16623d8c345d02c25b8f9190e551a73 all runs: crashed: WARNING: suspicious RCU usage in get_callchain_entry representative crash: WARNING: suspicious RCU usage in get_callchain_entry, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [KASAN ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit f4f677285b389e3d1bead19ad6b806527bf693f3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 44dfcfb66af9672ae77b1590adc53c0a0e76663bfb8490d731ab2c7249ac04af all runs: OK false negative chance: 0.000 minimized to 394 configs; suspects: [ARCH_ENABLE_MEMORY_HOTREMOVE ATM BCMA BLK_DEV_ZONED BPF_SYSCALL CARDBUS CFG80211 CFG80211_WEXT CMA COMMON_CLK CONTIG_ALLOC CRYPTO_842 CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_LZO CRYPTO_ZSTD DVB_CORE EXTCON FB GPIOLIB HID_ZEROPLUS I2C_MUX IIO IRQ_REMAP KVM KVM_INTEL LIBNVDIMM MEDIA_ANALOG_TV_SUPPORT MEDIA_CAMERA_SUPPORT MEDIA_CEC_SUPPORT MEDIA_CONTROLLER MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_TEST_SUPPORT MEDIA_USB_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_VIPERBOARD PARPORT PCCARD PCMCIA PHONET RADIO_ADAPTERS RADIO_SI470X RADIO_SI4713 RC_CORE RFKILL SND SOUND SPI SSB TAP TUN USB_AMD5536UDC USB_ATM USB_CONFIGFS USB_CONFIGFS_F_UAC1_LEGACY USB_CONFIGFS_F_UAC2 USB_CONFIGFS_F_UVC USB_CONFIGFS_MASS_STORAGE USB_CONFIGFS_NCM USB_CONFIGFS_OBEX USB_CONFIGFS_PHONET USB_CONFIGFS_RNDIS USB_CONFIGFS_SERIAL USB_CXACRU USB_CYPRESS_CY7C63 USB_CYTHERM USB_DSBR USB_DUMMY_HCD USB_DWC2 USB_DWC2_HOST USB_DWC2_PCI USB_DWC3 USB_DWC3_GADGET USB_DWC3_OF_SIMPLE USB_DWC3_PCI USB_DWC3_ULPI USB_DYNAMIC_MINORS USB_EG20T USB_EHCI_HCD_PLATFORM USB_EHCI_ROOT_HUB_TT USB_EHSET_TEST_FIXTURE USB_EMI26 USB_EMI62 USB_EPSON2888 USB_EZUSB_FX2 USB_FEW_INIT_RETRIES USB_FOTG210_HCD USB_FOTG210_UDC USB_FTDI_ELAN USB_F_ACM USB_F_ECM USB_F_EEM USB_F_FS USB_F_HID USB_F_MASS_STORAGE USB_F_MIDI USB_F_NCM USB_F_OBEX USB_F_PHONET USB_F_PRINTER USB_F_RNDIS USB_F_SERIAL USB_F_SS_LB USB_F_SUBSET USB_F_TCM USB_F_UAC1 USB_F_UAC1_LEGACY USB_F_UAC2 USB_F_UVC USB_GADGET USB_GADGETFS USB_GADGET_DEBUG_FILES USB_GADGET_DEBUG_FS USB_GL860 USB_GOKU USB_GPIO_VBUS USB_GR_UDC USB_GSPCA USB_GSPCA_BENQ USB_GSPCA_CONEX USB_GSPCA_CPIA1 USB_GSPCA_DTCS033 USB_GSPCA_ETOMS USB_GSPCA_FINEPIX USB_GSPCA_JEILINJ USB_GSPCA_JL2005BCD USB_GSPCA_KINECT USB_GSPCA_KONICA USB_GSPCA_MARS USB_GSPCA_MR97310A USB_GSPCA_NW80X USB_GSPCA_OV519 USB_GSPCA_OV534 USB_GSPCA_OV534_9 USB_GSPCA_PAC207 USB_GSPCA_PAC7302 USB_GSPCA_PAC7311 USB_GSPCA_SE401 USB_GSPCA_SN9C2028 USB_GSPCA_SN9C20X USB_GSPCA_SONIXB 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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_U132_HCD USB_UAS USB_UEAGLEATM USB_ULPI_BUS USB_USBNET USB_USS720 USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_VIDEO_CLASS USB_VIDEO_CLASS_INPUT_EVDEV USB_VL600 USB_WDM USB_XHCI_DBGCAP USB_XHCI_PLATFORM USB_XUSBATM USB_YUREX USERFAULTFD USERIO USERMODE_DRIVER USER_RETURN_NOTIFIER U_SERIAL_CONSOLE V4L2_MEM2MEM_DEV V4L_TEST_DRIVERS VALIDATE_FS_PARSER VDPA VDPA_SIM VDPA_SIM_BLOCK VDPA_SIM_NET VDPA_USER VETH VFIO VFIO_IOMMU_TYPE1 VFIO_PCI VFIO_PCI_CORE VFIO_PCI_INTX VFIO_PCI_MMAP VFIO_VIRQFD VGASTATE VHOST VHOST_CROSS_ENDIAN_LEGACY VHOST_IOTLB VHOST_NET VHOST_RING VHOST_VDPA VHOST_VSOCK VIDEOBUF2_CORE VIDEOBUF2_DMA_CONTIG VIDEOBUF2_DMA_SG VIDEOBUF2_MEMOPS VIDEOBUF2_V4L2 VIDEOBUF2_VMALLOC VIDEOMODE_HELPERS VIDEO_AU0828 VIDEO_AU0828_RC VIDEO_AU0828_V4L2 VIDEO_CS53L32A VIDEO_CX231XX VIDEO_CX231XX_ALSA VIDEO_CX231XX_DVB VIDEO_CX231XX_RC VIDEO_CX2341X VIDEO_CX25840 VIDEO_DEV VIDEO_EM28XX VIDEO_EM28XX_ALSA VIDEO_EM28XX_DVB VIDEO_EM28XX_RC VIDEO_EM28XX_V4L2 VIDEO_GO7007 VIDEO_GO7007_LOADER VIDEO_GO7007_USB VIDEO_GO7007_USB_S2250_BOARD VIDEO_HDPVR VIDEO_MSP3400 VIDEO_PVRUSB2 VIDEO_PVRUSB2_DVB VIDEO_PVRUSB2_SYSFS VIDEO_SAA711X VIDEO_STK1160 VIDEO_STK1160_COMMON VIDEO_TUNER VIDEO_TVEEPROM VIDEO_USBTV VIDEO_V4L2_I2C VIDEO_V4L2_SUBDEV_API VIDEO_V4L2_TPG VIDEO_VICODEC VIDEO_VIM2M VIDEO_VIMC VIDEO_VIVID VIDEO_VIVID_CEC VIDEO_WM8775 VIPERBOARD_ADC VIRTIO_BALLOON VIRTIO_DMA_SHARED_BUFFER VIRTIO_MEM VIRTIO_MMIO VIRTIO_MMIO_CMDLINE_DEVICES VIRTIO_PMEM VIRTIO_VDPA VIRTIO_VSOCKETS VIRTIO_VSOCKETS_COMMON VIRT_WIFI VLAN_8021Q VLAN_8021Q_GVRP VLAN_8021Q_MVRP VMAP_PFN VMWARE_VMCI VMXNET3 VP_VDPA VSOCKETS VSOCKETS_DIAG VSOCKETS_LOOPBACK VSOCKMON VT_HW_CONSOLE_BINDING VXFS_FS WANT_DEV_COREDUMP WEXT_CORE WEXT_PRIV WEXT_PROC WIREGUARD WIRELESS WIRELESS_EXT WLAN WLAN_VENDOR_ADMTEK WLAN_VENDOR_PURELIFI WLAN_VENDOR_SILABS X86_SGX X86_SGX_KVM X86_X2APIC X86_X32_ABI XARRAY_MULTI XDP_SOCKETS XDP_SOCKETS_DIAG XFRM_ESPINTCP XFRM_INTERFACE XFRM_IPCOMP XFRM_MIGRATE XFRM_OFFLOAD XFRM_STATISTICS XFRM_SUB_POLICY XFRM_USER_COMPAT XFS_FS XFS_POSIX_ACL XFS_QUOTA XFS_RT XOR_BLOCKS YENTA YENTA_ENE_TUNE YENTA_O2 YENTA_RICOH YENTA_TI YENTA_TOSHIBA ZBUD ZEROPLUS_FF ZLIB_DEFLATE ZONEFS_FS ZPOOL ZRAM ZRAM_DEF_COMP_LZORLE ZSMALLOC ZSTD_COMPRESS ZSWAP ZSWAP_COMPRESSOR_DEFAULT_LZO ZSWAP_DEFAULT_ON ZSWAP_ZPOOL_DEFAULT_ZBUD] disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed determining the merge base between f4f677285b389e3d1bead19ad6b806527bf693f3 and 03d38806a902b36bf364cae8de6f1183c0a35a67 830b3c68c1fb1e9176028d02ef86f3cf76aa2476/Linux 6.1 is a merge base, check if it has the bug testing commit 830b3c68c1fb1e9176028d02ef86f3cf76aa2476 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 826259908012724a40817e5bc509b4e0d231284512f97073a9df0544225bdc9b all runs: crashed: WARNING: suspicious RCU usage in get_callchain_entry representative crash: WARNING: suspicious RCU usage in get_callchain_entry, types: [LOCKDEP] testing current HEAD 03d38806a902b36bf364cae8de6f1183c0a35a67 testing commit 03d38806a902b36bf364cae8de6f1183c0a35a67 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: cf4dd52cf9b7ab935eb67a3b6e86a9867e9908406a54a26ec5444ac258361593 all runs: crashed: WARNING: suspicious RCU usage in get_callchain_entry representative crash: WARNING: suspicious RCU usage in get_callchain_entry, types: [LOCKDEP] crash still not fixed/happens on the oldest tested release revisions tested: 9, total time: 2h17m10.496723825s (build: 1h33m6.485164549s, test: 32m57.768298606s) crash still not fixed or there were kernel test errors commit msg: Merge tag 'thermal-6.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm crash: WARNING: suspicious RCU usage in get_callchain_entry ============================= WARNING: suspicious RCU usage 6.14.0-rc4-syzkaller #0 Not tainted ----------------------------- kernel/events/callchain.c:162 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz-executor.0/2717: #0: ffffffff8338b6f0 (rcu_read_lock_trace){....}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #0: ffffffff8338b6f0 (rcu_read_lock_trace){....}-{0:0}, at: rcu_read_lock_trace+0x16/0x40 include/linux/rcupdate_trace.h:58 stack backtrace: CPU: 0 UID: 0 PID: 2717 Comm: syz-executor.0 Not tainted 6.14.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x9f/0x100 lib/dump_stack.c:120 lockdep_rcu_suspicious+0x15f/0x1b0 kernel/locking/lockdep.c:6847 get_callchain_entry+0xff/0x110 kernel/events/callchain.c:162 get_perf_callchain+0x48/0x210 kernel/events/callchain.c:226 __bpf_get_stack+0x207/0x460 kernel/bpf/stackmap.c:454 ____bpf_get_stack kernel/bpf/stackmap.c:499 [inline] bpf_get_stack+0x14/0x20 kernel/bpf/stackmap.c:496 ____bpf_get_stack_raw_tp kernel/trace/bpf_trace.c:1948 [inline] bpf_get_stack_raw_tp+0xa3/0xc0 kernel/trace/bpf_trace.c:1938 ___bpf_prog_run+0x5aa/0x2070 kernel/bpf/core.c:2015 __bpf_prog_run32+0xb7/0xe0 kernel/bpf/core.c:2256 bpf_dispatcher_nop_func include/linux/bpf.h:1290 [inline] __bpf_prog_run include/linux/filter.h:701 [inline] bpf_prog_run include/linux/filter.h:708 [inline] bpf_prog_run_pin_on_cpu+0x24/0x80 include/linux/filter.h:725 bpf_prog_test_run_syscall+0xcd/0x140 net/bpf/test_run.c:1558 bpf_prog_test_run+0xdf/0x100 kernel/bpf/syscall.c:4407 __sys_bpf+0x2ff/0x5a0 kernel/bpf/syscall.c:5813 __do_sys_bpf kernel/bpf/syscall.c:5902 [inline] __se_sys_bpf kernel/bpf/syscall.c:5900 [inline] __x64_sys_bpf+0x13/0x20 kernel/bpf/syscall.c:5900 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x7e/0x170 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7fb7da57dea9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb7da0ff0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fb7da6abf80 RCX: 00007fb7da57dea9 RDX: 000000000000000c RSI: 00000000200004c0 RDI: 000000000000000a RBP: 00007fb7da5ca4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fb7da6abf80 R15: 00007ffde7efc638