ci starts bisection 2025-04-14 10:07:19.450675507 +0000 UTC m=+187995.943445461
bisecting fixing commit since 87a132e73910e8689902aed7f2fc229d6908383b
building syzkaller on 506687987fc2f8f40b2918782fc2943285fdc602
ensuring issue is reproducible on original commit 87a132e73910e8689902aed7f2fc229d6908383b
testing commit 87a132e73910e8689902aed7f2fc229d6908383b gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 36f67ebfb76b78a9f409ff8c34d42ef98dbd633e32145bb0bb1efe25b03212b5
run #0: crashed: BUG: Bad rss-counter state
run #1: crashed: WARNING: locking bug in rcu_pending_exit
run #2: crashed: possible deadlock in console_flush_all
run #3: crashed: general protection fault in put_pwq_unlocked
run #4: crashed: WARNING in __srcu_check_read_flavor
run #5: crashed: WARNING: locking bug in rcu_pending_pcpu_dequeue
run #6: crashed: BUG: spinlock bad magic in bch2_fs_release
run #7: crashed: WARNING: locking bug in rcu_pending_exit
run #8: crashed: WARNING: locking bug in rcu_pending_exit
run #9: crashed: KASAN: global-out-of-bounds Read in rcu_pending_exit
run #10: crashed: KASAN: global-out-of-bounds Read in rcu_pending_pcpu_dequeue
run #11: crashed: INFO: task hung in synchronize_rcu
run #12: 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-executor2832274846" "root@10.128.10.55:./syz-executor2832274846"]: exit status 255
Executing: program /usr/bin/ssh host 10.128.10.55, user root, command sftp
OpenSSH_9.2p1 Debian-2+deb12u4, OpenSSL 3.0.15 3 Sep 2024
debug1: Reading configuration data /dev/null
debug1: Connecting to 10.128.10.55 [10.128.10.55] port 22.
debug1: connect to address 10.128.10.55 port 22: Connection timed out
ssh: connect to host 10.128.10.55 port 22: Connection timed out
scp: Connection closed
run #13: crashed: WARNING in __srcu_check_read_flavor
run #14: OK
run #15: crashed: WARNING: locking bug in rcu_pending_pcpu_dequeue
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: WARNING: locking bug in rcu_pending_exit, types: [LOCKDEP UNKNOWN WARNING]
check whether we can drop unnecessary instrumentation
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed
testing commit 87a132e73910e8689902aed7f2fc229d6908383b gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 626ff289e263e7fad1ed24959d6812c5b578fd15b9803bb44410528be78dcf15
run #0: crashed: WARNING: locking bug in rcu_pending_pcpu_dequeue
run #1: crashed: WARNING: locking bug in rcu_pending_pcpu_dequeue
run #2: crashed: WARNING: locking bug in rcu_pending_exit
run #3: crashed: WARNING: locking bug in rcu_pending_pcpu_dequeue
run #4: crashed: WARNING in bch2_fs_btree_iter_exit
run #5: crashed: WARNING: locking bug in rcu_pending_pcpu_dequeue
run #6: crashed: WARNING: locking bug in rcu_pending_pcpu_dequeue
run #7: crashed: WARNING: locking bug in rcu_pending_exit
run #8: crashed: WARNING: locking bug in rcu_pending_exit
run #9: crashed: BUG: Bad rss-counter state
representative crash: WARNING: locking bug in rcu_pending_pcpu_dequeue, types: [LOCKDEP]
the bug reproduces without the instrumentation
disabling configs for [LEAK UBSAN KASAN ATOMIC_SLEEP HANG], they are not needed
kconfig minimization: base=4079 full=8263 leaves diff=2127
split chunks (needed=false): <2127>
split chunk #0 of len 2127 into 5 parts
testing without sub-chunk 1/5
disabling configs for [KASAN ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit 87a132e73910e8689902aed7f2fc229d6908383b gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 68d4f444198647de8509b381363be1bc8657c6e12d536865f99695fda0c0db44
all runs: OK
false negative chance: 0.000
testing without sub-chunk 2/5
disabling configs for [UBSAN KASAN ATOMIC_SLEEP HANG LEAK], they are not needed
testing commit 87a132e73910e8689902aed7f2fc229d6908383b gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 33dbc112b94349114e2a674a8a1d8b206e3b1b8ef0daaa0bc425a14421f29f1b
run #0: crashed: BUG: Bad rss-counter state
run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in dst_dev_put
run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in bch2_fs_btree_iter_exit
run #3: crashed: WARNING: locking bug in rcu_pending_exit
run #4: crashed: general protection fault in put_pwq_unlocked
run #5: crashed: WARNING: locking bug in rcu_pending_exit
run #6: crashed: WARNING: locking bug in rcu_pending_exit
run #7: crashed: WARNING: locking bug in rcu_pending_exit
run #8: crashed: WARNING: locking bug in rcu_pending_pcpu_dequeue
run #9: crashed: no output from test machine
representative crash: BUG: Bad rss-counter state, types: [UNKNOWN LOCKDEP]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [HANG LEAK UBSAN KASAN ATOMIC_SLEEP], they are not needed
testing commit 87a132e73910e8689902aed7f2fc229d6908383b gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 9423172540a64b7d3d991c2ae807ffe88abc6b6e81b51615af1a76132a46fbfd
run #0: crashed: WARNING: locking bug in rcu_pending_exit
run #1: crashed: WARNING: locking bug in rcu_pending_pcpu_dequeue
run #2: crashed: WARNING: locking bug in srcu_gp_start_if_needed
run #3: crashed: WARNING: locking bug in rcu_pending_exit
run #4: crashed: WARNING: locking bug in rcu_pending_exit
run #5: crashed: WARNING: locking bug in rcu_pending_pcpu_dequeue
run #6: crashed: WARNING: locking bug in rcu_pending_exit
run #7: crashed: WARNING in __srcu_check_read_flavor
run #8: crashed: WARNING: locking bug in rcu_pending_exit
run #9: crashed: BUG: unable to handle kernel NULL pointer dereference in put_pwq_unlocked
representative crash: WARNING: locking bug in rcu_pending_exit, types: [LOCKDEP]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [HANG LEAK UBSAN KASAN ATOMIC_SLEEP], they are not needed
testing commit 87a132e73910e8689902aed7f2fc229d6908383b gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: a651ba9548bff6caea740edfcff7362cf8036ecc16359be4b4a058e2ad4b1eaa
run #0: crashed: general protection fault in put_pwq_unlocked
run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in __bch2_trans_get
run #2: crashed: WARNING: locking bug in srcu_gp_start_if_needed
run #3: crashed: general protection fault in put_pwq_unlocked
run #4: crashed: general protection fault in put_pwq_unlocked
run #5: crashed: WARNING: locking bug in rcu_pending_pcpu_dequeue
run #6: crashed: general protection fault in process_srcu
run #7: crashed: WARNING in bch2_fs_release
run #8: crashed: general protection fault in srso_alias_safe_ret
run #9: crashed: WARNING in __srcu_check_read_flavor
representative crash: general protection fault in put_pwq_unlocked, types: [UNKNOWN LOCKDEP]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [HANG LEAK UBSAN KASAN ATOMIC_SLEEP], they are not needed
testing commit 87a132e73910e8689902aed7f2fc229d6908383b gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 7255bd3d7b33d5806538688a583aa2ed5014fc02afaa31469461d5a6a965ba5b
run #0: crashed: WARNING: locking bug in rcu_pending_exit
run #1: crashed: general protection fault in put_pwq_unlocked
run #2: crashed: WARNING: locking bug in rcu_pending_exit
run #3: crashed: WARNING: locking bug in rcu_pending_exit
run #4: crashed: WARNING: locking bug in rcu_pending_exit
run #5: crashed: WARNING: locking bug in rcu_pending_exit
run #6: crashed: WARNING: locking bug in rcu_pending_pcpu_dequeue
run #7: crashed: WARNING: locking bug in rcu_pending_exit
run #8: crashed: no output from test machine
run #9: OK
representative crash: WARNING: locking bug in rcu_pending_exit, types: [LOCKDEP]
the chunk can be dropped
minimized to 426 configs; suspects: [6LOWPAN 6LOWPAN_GHC_EXT_HDR_DEST 6LOWPAN_GHC_EXT_HDR_FRAG 6LOWPAN_GHC_EXT_HDR_HOP 6LOWPAN_GHC_EXT_HDR_ROUTE 6LOWPAN_GHC_ICMPV6 6LOWPAN_GHC_UDP 6LOWPAN_NHC 6LOWPAN_NHC_DEST 6LOWPAN_NHC_FRAGMENT 6LOWPAN_NHC_HOP 6LOWPAN_NHC_IPV6 6LOWPAN_NHC_MOBILITY 6LOWPAN_NHC_ROUTING 6LOWPAN_NHC_UDP 6PACK 842_COMPRESS 842_DECOMPRESS 9P_FSCACHE 9P_FS_POSIX_ACL 9P_FS_SECURITY ACORN_PARTITION ACORN_PARTITION_ADFS ACORN_PARTITION_CUMANA ACORN_PARTITION_EESOX ACORN_PARTITION_ICS ACORN_PARTITION_POWERTEC ACORN_PARTITION_RISCIX ACPI_NFIT ACPI_NHLT ACPI_PLATFORM_PROFILE ADFS_FS AFFS_FS AFS_FS AFS_FSCACHE AF_KCM AF_RXRPC AF_RXRPC_IPV6 AIX_PARTITION AMD_SFH_HID AMIGA_PARTITION ANDROID_BINDER_IPC ANON_VMA_NAME APERTURE_HELPERS APPLE_MFI_FASTCHARGE AR5523 ARCH_ENABLE_MEMORY_HOTREMOVE ARCH_ENABLE_THP_MIGRATION ARCH_HAS_USER_SHADOW_STACK ARCH_SUPPORTS_HUGE_PFNMAP ARCH_SUPPORTS_PMD_PFNMAP ARCH_SUPPORTS_PUD_PFNMAP ARCH_WANT_PMD_MKWRITE ASM_MODVERSIONS ASUS_TF103C_DOCK ASYNC_CORE ASYNC_MEMCPY ASYNC_PQ ASYNC_RAID6_RECOV ASYNC_TX_DMA ASYNC_XOR ATARI_PARTITION ATA_GENERIC ATA_OVER_ETH ATH10K ATH10K_CE ATH10K_LEDS ATH10K_PCI ATH10K_USB ATH11K ATH6KL ATH6KL_USB ATH9K ATH9K_AHB ATH9K_BTCOEX_SUPPORT ATH9K_CHANNEL_CONTEXT ATH9K_COMMON ATH9K_COMMON_DEBUG ATH9K_COMMON_SPECTRAL ATH9K_DEBUGFS ATH9K_DYNACK ATH9K_HTC ATH9K_HTC_DEBUGFS ATH9K_HW ATH9K_PCI ATH9K_PCOEM ATH9K_RFKILL ATH_COMMON ATM ATM_BR2684 ATM_CLIP ATM_DRIVERS ATM_LANE ATM_MPOA ATM_TCP AUXILIARY_BUS AX25 AX25_DAMA_SLAVE AX88796B_PHY BAREUDP BATMAN_ADV BATMAN_ADV_BATMAN_V BATMAN_ADV_BLA BATMAN_ADV_DAT BATMAN_ADV_MCAST BATMAN_ADV_NC BCACHE BCACHEFS_DEBUG BCACHEFS_ERASURE_CODING BCACHEFS_FS BCACHEFS_POSIX_ACL BCACHEFS_QUOTA BCACHEFS_SIX_OPTIMISTIC_SPIN BCMA BCMA_HOST_PCI_POSSIBLE BEFS_FS BFQ_CGROUP_DEBUG BFQ_GROUP_IOSCHED BFS_FS BIG_KEYS BLK_CGROUP_PUNT_BIO BLK_CGROUP_RWSTAT BLK_DEV_BSGLIB BLK_DEV_INTEGRITY BLK_DEV_NBD BLK_DEV_NULL_BLK BLK_DEV_NULL_BLK_FAULT_INJECTION BLK_DEV_NVME BLK_DEV_PMEM BLK_DEV_RAM BLK_DEV_RNBD BLK_DEV_RNBD_CLIENT BLK_DEV_THROTTLING BLK_DEV_ZONED BLK_ICQ BLK_INLINE_ENCRYPTION BLK_INLINE_ENCRYPTION_FALLBACK BLK_WBT BLK_WBT_MQ BONDING BOOT_VESA_SUPPORT BPF_EVENTS BPF_JIT BPF_JIT_ALWAYS_ON BPF_JIT_DEFAULT_ON BPF_LSM BPF_PRELOAD BPF_PRELOAD_UMD BPF_STREAM_PARSER BPF_SYSCALL BPQETHER BRIDGE BRIDGE_CFM BRIDGE_EBT_802_3 BRIDGE_EBT_AMONG BRIDGE_EBT_ARP BRIDGE_EBT_ARPREPLY BRIDGE_EBT_BROUTE BRIDGE_EBT_DNAT BRIDGE_EBT_IP BRIDGE_EBT_IP6 BRIDGE_EBT_LIMIT BRIDGE_EBT_LOG BRIDGE_EBT_MARK BRIDGE_EBT_MARK_T BRIDGE_EBT_NFLOG BRIDGE_EBT_PKTTYPE BRIDGE_EBT_REDIRECT BRIDGE_EBT_SNAT BRIDGE_EBT_STP BRIDGE_EBT_T_FILTER BRIDGE_EBT_T_NAT BRIDGE_EBT_VLAN BRIDGE_IGMP_SNOOPING BRIDGE_MRP BRIDGE_NF_EBTABLES BRIDGE_NF_EBTABLES_LEGACY BRIDGE_VLAN_FILTERING BSD_DISKLABEL BSD_PROCESS_ACCT_V3 BT BTRFS_ASSERT BTRFS_FS BTRFS_FS_POSIX_ACL BTRFS_FS_REF_VERIFY BTT BT_6LOWPAN BT_ATH3K BT_BCM BT_BNEP BT_BNEP_MC_FILTER BT_BNEP_PROTO_FILTER BT_BREDR BT_HCIBCM203X BT_HCIBFUSB BT_HCIBPA10X BT_HCIBTUSB BT_HCIBTUSB_AUTOSUSPEND BT_HCIBTUSB_BCM BT_HCIBTUSB_MTK BT_HCIBTUSB_POLL_SYNC BT_HCIBTUSB_RTL BT_HCIUART BT_HCIUART_3WIRE BT_HCIUART_AG6XX BT_HCIUART_BCSP BT_HCIUART_H4 BT_HCIUART_LL BT_HCIUART_MRVL BT_HCIUART_QCA BT_HCIUART_SERDEV BT_HCIVHCI BT_INTEL BT_LE BT_LEDS BT_LE_L2CAP_ECRED BT_MRVL BT_MRVL_SDIO BT_MSFTEXT BT_MTK BT_MTKSDIO BT_MTKUART BT_QCA BT_RFCOMM BT_RFCOMM_TTY BT_RTL CACHEFILES CAIF CAIF_DEBUG CAIF_DRIVERS CAIF_NETDEV CAIF_TTY CAIF_USB CAIF_VIRTIO CAN CAN_8DEV_USB CAN_BCM CAN_CALC_BITTIMING CAN_DEV CAN_EMS_USB CAN_ESD_USB CAN_ETAS_ES58X CAN_F81604 CAN_GS_USB CAN_GW CAN_IFI_CANFD CAN_ISOTP CAN_J1939 CAN_KVASER_USB CAN_MCBA_USB CAN_NETLINK CAN_PEAK_USB CAN_RAW CAN_RX_OFFLOAD CAN_SLCAN CAN_UCAN CAN_VCAN CAN_VXCAN CARL9170 CARL9170_HWRNG CARL9170_LEDS CARL9170_WPC CC_HAS_SANE_STACKPROTECTOR CEC_CORE CEPH_FS CEPH_FSCACHE CEPH_FS_POSIX_ACL CEPH_LIB CEPH_LIB_USE_DNS_RESOLVER CFG80211 CFG80211_CRDA_SUPPORT CFG80211_DEBUGFS CFG80211_DEFAULT_PS CFG80211_REQUIRE_SIGNED_REGDB CFG80211_USE_KERNEL_REGDB_KEYS CFG80211_WEXT CFS_BANDWIDTH CGROUP_BPF CHARGER_ISP1704 CHR_DEV_ST CIFS CIFS_ALLOW_INSECURE_LEGACY CIFS_DEBUG CIFS_DFS_UPCALL CIFS_FSCACHE CIFS_POSIX CIFS_SMB_DIRECT CIFS_SWN_UPCALL CIFS_UPCALL CIFS_XATTR CLOSURES CLS_U32_MARK CLS_U32_PERF CMA CMA_SIZE_SEL_MAX CMDLINE_PARTITION COMEDI COMEDI_DT9812 COMEDI_NI_USB6501 COMEDI_USBDUX COMEDI_USBDUXFAST COMEDI_USBDUXSIGMA COMEDI_USB_DRIVERS COMEDI_VMK80XX COMPAT_NETLINK_MESSAGES COUNTER CRAMFS CRAMFS_BLOCKDEV CRAMFS_MTD CRC4 CRC64 CRC64_ROCKSOFT CRC7 CRC8 CRC_ITU_T CRC_T10DIF CRC_T10DIF_ARCH CRYPTO_842 CRYPTO_ADIANTUM CRYPTO_AEGIS128 CRYPTO_AEGIS128_AESNI_SSE2 CRYPTO_AES_NI_INTEL CRYPTO_AES_TI CRYPTO_ANSI_CPRNG CRYPTO_ANUBIS CRYPTO_ARC4 CRYPTO_ARCH_HAVE_LIB_BLAKE2S CRYPTO_ARCH_HAVE_LIB_CHACHA CRYPTO_ARCH_HAVE_LIB_CURVE25519 CRYPTO_ARCH_HAVE_LIB_POLY1305 CRYPTO_ARIA CRYPTO_ARIA_AESNI_AVX_X86_64 CRYPTO_BLAKE2B CRYPTO_BLAKE2S_X86 CRYPTO_BLOWFISH CRYPTO_BLOWFISH_COMMON CRYPTO_BLOWFISH_X86_64 CRYPTO_CAMELLIA CRYPTO_CAMELLIA_AESNI_AVX2_X86_64 CRYPTO_CAMELLIA_AESNI_AVX_X86_64 CRYPTO_CAMELLIA_X86_64 CRYPTO_CAST5 CRYPTO_CAST5_AVX_X86_64 CRYPTO_CAST6 CRYPTO_CAST6_AVX_X86_64 CRYPTO_CAST_COMMON CRYPTO_CHACHA20 CRYPTO_CHACHA20POLY1305 CRYPTO_CHACHA20_X86_64 CRYPTO_CRC32 CRYPTO_CRC32C CRYPTO_CRC64_ROCKSOFT CRYPTO_CRYPTD CRYPTO_CTS CRYPTO_CURVE25519 CRYPTO_CURVE25519_X86 CRYPTO_DEFLATE CRYPTO_DES CRYPTO_DES3_EDE_X86_64 CRYPTO_DEV_CCP CRYPTO_DEV_CCP_DD CRYPTO_DEV_PADLOCK CRYPTO_DEV_PADLOCK_AES CRYPTO_DEV_PADLOCK_SHA CRYPTO_DEV_QAT CRYPTO_DEV_QAT_C3XXX CRYPTO_DEV_QAT_C3XXXVF CRYPTO_DEV_QAT_C62X CRYPTO_DEV_QAT_C62XVF CRYPTO_DEV_QAT_DH895xCC CRYPTO_DEV_QAT_DH895xCCVF CRYPTO_DEV_VIRTIO CRYPTO_DH CRYPTO_DRBG_CTR CRYPTO_DRBG_HASH CRYPTO_ECDH CRYPTO_ECRDSA CRYPTO_ENGINE CRYPTO_ESSIV CRYPTO_FCRYPT CRYPTO_GHASH_CLMUL_NI_INTEL CRYPTO_HCTR2 CRYPTO_KDF800108_CTR CRYPTO_KHAZAD CRYPTO_KPP CRYPTO_LIB_ARC4 CRYPTO_LIB_CHACHA CRYPTO_LIB_CHACHA20POLY1305 CRYPTO_LIB_CHACHA_GENERIC CRYPTO_LIB_CURVE25519 CRYPTO_LIB_CURVE25519_GENERIC CRYPTO_LIB_DES CRYPTO_LIB_POLY1305 CRYPTO_LIB_POLY1305_GENERIC CRYPTO_LRW CRYPTO_LZ4 CRYPTO_LZ4HC CRYPTO_MICHAEL_MIC CRYPTO_NHPOLY1305 CRYPTO_NHPOLY1305_AVX2 CRYPTO_NHPOLY1305_SSE2 CRYPTO_PCBC CRYPTO_PCRYPT CRYPTO_POLY1305 CRYPTO_POLY1305_X86_64 CRYPTO_POLYVAL CRYPTO_POLYVAL_CLMUL_NI CRYPTO_RMD160 CRYPTO_SEED CRYPTO_SERPENT CRYPTO_SERPENT_AVX2_X86_64 CRYPTO_SERPENT_AVX_X86_64 CRYPTO_SERPENT_SSE2_X86_64 CRYPTO_SHA1_SSSE3 CRYPTO_SHA256_SSSE3 CRYPTO_SHA512_SSSE3 CRYPTO_SIMD CRYPTO_SM3 CRYPTO_SM3_AVX_X86_64 CRYPTO_SM4 CRYPTO_SM4_AESNI_AVX2_X86_64 CRYPTO_SM4_AESNI_AVX_X86_64 CRYPTO_SM4_GENERIC CRYPTO_STREEBOG CRYPTO_TEA CRYPTO_TWOFISH CRYPTO_TWOFISH_AVX_X86_64 CRYPTO_TWOFISH_COMMON CRYPTO_TWOFISH_X86_64 CRYPTO_TWOFISH_X86_64_3WAY CRYPTO_USER CRYPTO_USER_API CRYPTO_USER_API_AEAD CRYPTO_USER_API_ENABLE_OBSOLETE CRYPTO_USER_API_HASH CRYPTO_USER_API_RNG CRYPTO_USER_API_SKCIPHER CRYPTO_WP512 CRYPTO_XCBC CRYPTO_XCTR CRYPTO_XTS CRYPTO_XXHASH CRYPTO_ZSTD CUSE CYPRESS_FIRMWARE DAMON DAMON_PADDR DAMON_RECLAIM DAMON_VADDR DAX DCA DCB DEFAULT_CODEL DEVICE_MIGRATION DEVICE_PRIVATE DEV_COREDUMP DEV_DAX DLN2_ADC DMABUF_HEAPS DMABUF_HEAPS_CMA DMABUF_HEAPS_SYSTEM DMABUF_MOVE_NOTIFY DMA_CMA DMA_ENGINE_RAID DM_AUDIT DM_BIO_PRISON DM_BUFIO DM_CACHE DM_CACHE_SMQ DM_CLONE DM_CRYPT DM_FLAKEY DM_INTEGRITY DM_MULTIPATH DM_MULTIPATH_QL DM_MULTIPATH_ST DM_PERSISTENT_DATA DM_RAID DM_SNAPSHOT DM_THIN_PROVISIONING DM_UEVENT DM_VERITY DM_VERITY_FEC DM_WRITECACHE DM_ZONED DRAGONRISE_FF DRM DRM_AUX_BRIDGE DRM_BOCHS DRM_BRIDGE DRM_BUDDY DRM_CIRRUS_QEMU DRM_CLIENT DRM_CLIENT_DEFAULT_FBDEV DRM_CLIENT_LIB DRM_CLIENT_SELECTION DRM_CLIENT_SETUP DRM_DEBUG_MM DRM_DISPLAY_DP_AUX_BUS DRM_DISPLAY_DP_HELPER DRM_DISPLAY_DSC_HELPER DRM_DISPLAY_HDCP_HELPER DRM_DISPLAY_HDMI_HELPER DRM_DISPLAY_HELPER DRM_FBDEV_EMULATION DRM_GEM_SHMEM_HELPER DRM_GM12U320 DRM_GUD DRM_I915 DRM_I915_CAPTURE_ERROR DRM_I915_COMPRESS_ERROR ENCRYPTED_KEYS FSCACHE FUSE_FS GPIOLIB HAMRADIO HID_DRAGONRISE IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_RTRS_CLIENT IOSCHED_BFQ LIBNVDIMM MAC80211 MAC80211_DEBUGFS MAC80211_LEDS MCORE2 MEDIA_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 MMC MTD NET_CLS_U32 NET_SCH_DEFAULT PARTITION_ADVANCED RFKILL SERIAL_DEV_BUS TLS TLS_DEVICE TRANSPARENT_HUGEPAGE TRUSTED_KEYS USB_GADGET USB_PHY VLAN_8021Q WANT_COMPAT_NETLINK_MESSAGES WEXT_CORE WIRELESS WLAN WLAN_VENDOR_ATH X86_X32_ABI ZONE_DEVICE]
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed
testing current HEAD 8ffd015db85fea3e15a77027fda6c02ced4d2444
testing commit 8ffd015db85fea3e15a77027fda6c02ced4d2444 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 0af7d30a7bad85f051e7a3a685c8c23715a38c9551e4cb3393b254cdc6743b2c
run #0: crashed: WARNING in bch2_fs_release
run #1: crashed: possible deadlock in console_flush_all
run #2: crashed: WARNING: locking bug in rcu_pending_exit
run #3: crashed: WARNING in mempool_init_node
run #4: crashed: BUG: unable to handle kernel paging request in corrupted
run #5: crashed: WARNING: locking bug in srcu_gp_start_if_needed
run #6: crashed: possible deadlock in console_flush_all
run #7: crashed: BUG: workqueue lockup
run #8: crashed: BUG: workqueue lockup
run #9: crashed: WARNING: locking bug in rcu_pending_exit
representative crash: possible deadlock in console_flush_all, types: [LOCKDEP UNKNOWN]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 2h46m34.159847091s (build: 1h22m4.902555386s, test: 1h15m15.573283816s)
crash still not fixed or there were kernel test errors
commit msg: Linux 6.15-rc2
crash: possible deadlock in console_flush_all
------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
6.15.0-rc2-syzkaller #0 Not tainted
------------------------------------------------------
kworker/0:0/9 is trying to acquire lock:
ffffffff840a3e98 (console_owner){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:336 [inline]
ffffffff840a3e98 (console_owner){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:346 [inline]
ffffffff840a3e98 (console_owner){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:288 [inline]
ffffffff840a3e98 (console_owner){....}-{0:0}, at: console_flush_all+0x7c/0x500 kernel/printk/printk.c:3203
but task is already holding lock:
ffff888237c2c058 (&pool->lock){-.-.}-{2:2}, at: __queue_work+0x2b2/0x5e0 kernel/workqueue.c:-1
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (&pool->lock){-.-.}-{2:2}:
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
__queue_work+0x2b2/0x5e0 kernel/workqueue.c:-1
queue_work_on+0xce/0x120 kernel/workqueue.c:2392
queue_work include/linux/workqueue.h:662 [inline]
rpm_suspend+0x4f9/0x730 drivers/base/power/runtime.c:673
__pm_runtime_idle+0x68/0xa0 drivers/base/power/runtime.c:1112
pm_runtime_put include/linux/pm_runtime.h:466 [inline]
__device_attach+0x121/0x1b0 drivers/base/dd.c:1048
bus_probe_device+0x94/0x110 drivers/base/bus.c:537
device_add+0x25c/0x450 drivers/base/core.c:3666
serial_base_port_add+0xe0/0x150 drivers/tty/serial/serial_base_bus.c:179
serial_core_port_device_add drivers/tty/serial/serial_core.c:3342 [inline]
serial_core_register_port+0x103/0x9e0 drivers/tty/serial/serial_core.c:3381
serial8250_register_8250_port+0x5e3/0x740 drivers/tty/serial/8250/8250_core.c:822
serial_pnp_probe+0x23f/0x300 drivers/tty/serial/8250/8250_pnp.c:480
pnp_device_probe+0xd0/0x120 drivers/pnp/driver.c:111
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0xf8/0x3c0 drivers/base/dd.c:658
__driver_probe_device+0x77/0x140 drivers/base/dd.c:800
driver_probe_device+0x1e/0x1b0 drivers/base/dd.c:830
__driver_attach+0x11a/0x270 drivers/base/dd.c:1216
bus_for_each_dev+0x105/0x150 drivers/base/bus.c:370
bus_add_driver+0x164/0x2b0 drivers/base/bus.c:678
driver_register+0x5d/0xf0 drivers/base/driver.c:249
serial8250_init+0x6e/0x110 drivers/tty/serial/8250/8250_platform.c:315
do_one_initcall+0x14b/0x450 init/main.c:1257
do_initcall_level+0x80/0xa0 init/main.c:1319
do_initcalls+0x56/0xa0 init/main.c:1335
kernel_init_freeable+0x17e/0x200 init/main.c:1567
kernel_init+0x15/0x190 init/main.c:1457
ret_from_fork+0x34/0x40 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
-> #2 (&dev->power.lock){-.-.}-{3:3}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x65/0xa0 kernel/locking/spinlock.c:162
__pm_runtime_resume+0x49/0x80 drivers/base/power/runtime.c:1179
pm_runtime_get include/linux/pm_runtime.h:414 [inline]
__uart_start+0x51/0xd0 drivers/tty/serial/serial_core.c:148
uart_write+0xd2/0x2b0 drivers/tty/serial/serial_core.c:635
process_output_block drivers/tty/n_tty.c:561 [inline]
n_tty_write+0x349/0x4c0 drivers/tty/n_tty.c:2377
iterate_tty_write drivers/tty/tty_io.c:1015 [inline]
file_tty_write+0x170/0x350 drivers/tty/tty_io.c:1090
new_sync_write fs/read_write.c:591 [inline]
vfs_write+0x2ab/0x3a0 fs/read_write.c:684
ksys_write+0x75/0xe0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #1 (&port_lock_key){-.-.}-{3:3}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x65/0xa0 kernel/locking/spinlock.c:162
uart_port_lock_irqsave include/linux/serial_core.h:715 [inline]
serial8250_console_write+0x7c/0x820 drivers/tty/serial/8250/8250_port.c:3415
console_emit_next_record kernel/printk/printk.c:3138 [inline]
console_flush_all+0x2f7/0x500 kernel/printk/printk.c:3226
__console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
console_unlock+0x71/0x100 kernel/printk/printk.c:3325
vprintk_emit+0x253/0x410 kernel/printk/printk.c:2450
_printk+0x5b/0x80 kernel/printk/printk.c:2475
register_console+0x363/0x3d0 kernel/printk/printk.c:4125
univ8250_console_init+0x1e/0x30 drivers/tty/serial/8250/8250_core.c:513
console_init+0xa2/0x280 kernel/printk/printk.c:4323
start_kernel+0x255/0x380 init/main.c:1034
x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:513
x86_64_start_kernel+0x61/0x70 arch/x86/kernel/head64.c:494
common_startup_64+0x13e/0x147
-> #0 (console_owner){....}-{0:0}:
check_prev_add kernel/locking/lockdep.c:3166 [inline]
check_prevs_add kernel/locking/lockdep.c:3285 [inline]
validate_chain kernel/locking/lockdep.c:3909 [inline]
__lock_acquire+0x1462/0x2c90 kernel/locking/lockdep.c:5235
lock_acquire+0xf9/0x2d0 kernel/locking/lockdep.c:5866
console_lock_spinning_enable kernel/printk/printk.c:1924 [inline]
console_emit_next_record kernel/printk/printk.c:3132 [inline]
console_flush_all+0x2b7/0x500 kernel/printk/printk.c:3226
__console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
console_unlock+0x71/0x100 kernel/printk/printk.c:3325
vprintk_emit+0x253/0x410 kernel/printk/printk.c:2450
_printk+0x5b/0x80 kernel/printk/printk.c:2475
__report_bug lib/bug.c:191 [inline]
report_bug+0x124/0x160 lib/bug.c:215
handle_bug+0x89/0x170 arch/x86/kernel/traps.c:337
exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:391
asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
__queue_work+0x528/0x5e0 kernel/workqueue.c:2325
queue_work_on+0xce/0x120 kernel/workqueue.c:2392
srcu_queue_delayed_work_on kernel/rcu/srcutree.c:833 [inline]
srcu_schedule_cbs_sdp kernel/rcu/srcutree.c:846 [inline]
srcu_gp_end kernel/rcu/srcutree.c:913 [inline]
srcu_advance_state kernel/rcu/srcutree.c:1757 [inline]
process_srcu+0x45a/0x6e0 kernel/rcu/srcutree.c:1861
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0x30a/0x700 kernel/workqueue.c:3319
worker_thread+0x1df/0x2e0 kernel/workqueue.c:3400
kthread+0x23e/0x270 kernel/kthread.c:464
ret_from_fork+0x34/0x40 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
other info that might help us debug this:
Chain exists of:
console_owner --> &dev->power.lock --> &pool->lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&pool->lock);
lock(&dev->power.lock);
lock(&pool->lock);
lock(console_owner);
*** DEADLOCK ***
7 locks held by kworker/0:0/9:
#0: ffff888100073748 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff888100073748 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x289/0x700 kernel/workqueue.c:3319
#1: ffffc90000053e40 ((work_completion)(&(&ssp->srcu_sup->work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90000053e40 ((work_completion)(&(&ssp->srcu_sup->work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x2a9/0x700 kernel/workqueue.c:3319
#2: ffff88810cf2b888 (&ssp->srcu_sup->srcu_cb_mutex){+.+.}-{4:4}, at: srcu_gp_end kernel/rcu/srcutree.c:892 [inline]
#2: ffff88810cf2b888 (&ssp->srcu_sup->srcu_cb_mutex){+.+.}-{4:4}, at: srcu_advance_state kernel/rcu/srcutree.c:1757 [inline]
#2: ffff88810cf2b888 (&ssp->srcu_sup->srcu_cb_mutex){+.+.}-{4:4}, at: process_srcu+0x142/0x6e0 kernel/rcu/srcutree.c:1861
#3: ffffffff84185d68 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#3: ffffffff84185d68 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#3: ffffffff84185d68 (rcu_read_lock){....}-{1:3}, at: __queue_work+0xa6/0x5e0 kernel/workqueue.c:2261
#4: ffff888237c2c058 (&pool->lock){-.-.}-{2:2}, at: __queue_work+0x2b2/0x5e0 kernel/workqueue.c:-1
#5: ffffffff840a3ec0 (console_lock){+.+.}-{0:0}, at: _printk+0x5b/0x80 kernel/printk/printk.c:2475
#6: ffffffff840a3c80 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:336 [inline]
#6: ffffffff840a3c80 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:346 [inline]
#6: ffffffff840a3c80 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:288 [inline]
#6: ffffffff840a3c80 (console_srcu){....}-{0:0}, at: console_flush_all+0x7c/0x500 kernel/printk/printk.c:3203
stack backtrace:
CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.15.0-rc2-syzkaller #0 PREEMPT(undef)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: rcu_gp process_srcu
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0xa7/0x100 lib/dump_stack.c:120
print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2079
check_noncircular+0x142/0x160 kernel/locking/lockdep.c:2211
check_prev_add kernel/locking/lockdep.c:3166 [inline]
check_prevs_add kernel/locking/lockdep.c:3285 [inline]
validate_chain kernel/locking/lockdep.c:3909 [inline]
__lock_acquire+0x1462/0x2c90 kernel/locking/lockdep.c:5235
lock_acquire+0xf9/0x2d0 kernel/locking/lockdep.c:5866
console_lock_spinning_enable kernel/printk/printk.c:1924 [inline]
console_emit_next_record kernel/printk/printk.c:3132 [inline]
console_flush_all+0x2b7/0x500 kernel/printk/printk.c:3226
__console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
console_unlock+0x71/0x100 kernel/printk/printk.c:3325
vprintk_emit+0x253/0x410 kernel/printk/printk.c:2450
_printk+0x5b/0x80 kernel/printk/printk.c:2475
__report_bug lib/bug.c:191 [inline]
report_bug+0x124/0x160 lib/bug.c:215
handle_bug+0x89/0x170 arch/x86/kernel/traps.c:337
exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:391
asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
RIP: 0010:__queue_work+0x528/0x5e0 kernel/workqueue.c:2325
Code: 5d 18 84 48 8b 74 24 10 e8 95 ca 06 00 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d e9 62 cd 0a 00 90 0f 0b 90 e9 db fe ff ff 90 <0f> 0b 90 eb 82 c6 05 48 1c 05 03 01 90 48 c7 c7 b6 a2 ac 83 e8 6f
RSP: 0018:ffffc90000053cf8 EFLAGS: 00010006
RAX: ffffe8ffffc1d4e8 RBX: 0000000000000011 RCX: ffffe8ffffc1d4eb
RDX: 00000000e3b03bc9 RSI: ffffffff83d10568 RDI: ffffffff83b04d58
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000078d R11: ffffffff81256830 R12: ffffe8ffffc1d4e0
R13: ffff8881000c4600 R14: 0000000000000000 R15: ffff888237c2c040
queue_work_on+0xce/0x120 kernel/workqueue.c:2392
srcu_queue_delayed_work_on kernel/rcu/srcutree.c:833 [inline]
srcu_schedule_cbs_sdp kernel/rcu/srcutree.c:846 [inline]
srcu_gp_end kernel/rcu/srcutree.c:913 [inline]
srcu_advance_state kernel/rcu/srcutree.c:1757 [inline]
process_srcu+0x45a/0x6e0 kernel/rcu/srcutree.c:1861
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0x30a/0x700 kernel/workqueue.c:3319
worker_thread+0x1df/0x2e0 kernel/workqueue.c:3400
kthread+0x23e/0x270 kernel/kthread.c:464
ret_from_fork+0x34/0x40 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
WARNING: CPU: 0 PID: 9 at kernel/workqueue.c:2325 __queue_work+0x528/0x5e0 kernel/workqueue.c:2325
Modules linked in:
CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.15.0-rc2-syzkaller #0 PREEMPT(undef)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: rcu_gp process_srcu
RIP: 0010:__queue_work+0x528/0x5e0 kernel/workqueue.c:2325
Code: 5d 18 84 48 8b 74 24 10 e8 95 ca 06 00 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d e9 62 cd 0a 00 90 0f 0b 90 e9 db fe ff ff 90 <0f> 0b 90 eb 82 c6 05 48 1c 05 03 01 90 48 c7 c7 b6 a2 ac 83 e8 6f
RSP: 0018:ffffc90000053cf8 EFLAGS: 00010006
RAX: ffffe8ffffc1d4e8 RBX: 0000000000000011 RCX: ffffe8ffffc1d4eb
RDX: 00000000e3b03bc9 RSI: ffffffff83d10568 RDI: ffffffff83b04d58
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000078d R11: ffffffff81256830 R12: ffffe8ffffc1d4e0
R13: ffff8881000c4600 R14: 0000000000000000 R15: ffff888237c2c040
FS: 0000000000000000(0000) GS:ffff8882b29f3000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc255ba7bac CR3: 000000014f270000 CR4: 0000000000350ef0
Call Trace:
queue_work_on+0xce/0x120 kernel/workqueue.c:2392
srcu_queue_delayed_work_on kernel/rcu/srcutree.c:833 [inline]
srcu_schedule_cbs_sdp kernel/rcu/srcutree.c:846 [inline]
srcu_gp_end kernel/rcu/srcutree.c:913 [inline]
srcu_advance_state kernel/rcu/srcutree.c:1757 [inline]
process_srcu+0x45a/0x6e0 kernel/rcu/srcutree.c:1861
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0x30a/0x700 kernel/workqueue.c:3319
worker_thread+0x1df/0x2e0 kernel/workqueue.c:3400
kthread+0x23e/0x270 kernel/kthread.c:464
ret_from_fork+0x34/0x40 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245