ci starts bisection 2024-03-04 23:39:40.756771985 +0000 UTC m=+39489.415107985
bisecting fixing commit since 6c1dd1fe5d8a1d43ed96e2e0ed44a88c73c5c039
building syzkaller on b438bd66d6f95113d52f25c25bfef0e963c8ce8d
ensuring issue is reproducible on original commit 6c1dd1fe5d8a1d43ed96e2e0ed44a88c73c5c039
testing commit 6c1dd1fe5d8a1d43ed96e2e0ed44a88c73c5c039 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 61ee161da858c6f9d60cc82502d075d24141fd58f62b6f7910a4d03993974737
all runs: crashed: INFO: task hung in bdev_release
representative crash: INFO: task hung in bdev_release, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing commit 6c1dd1fe5d8a1d43ed96e2e0ed44a88c73c5c039 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 4122d33d8e56fd462e93d660557130792b5de4be3cd81c3c8a31228fa384d37e
all runs: crashed: INFO: task hung in bdev_release
representative crash: INFO: task hung in bdev_release, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
kconfig minimization: base=3937 full=7669 leaves diff=2017
split chunks (needed=false): <2017>
split chunk #0 of len 2017 into 5 parts
testing without sub-chunk 1/5
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit 6c1dd1fe5d8a1d43ed96e2e0ed44a88c73c5c039 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 7634d87a455f29d3597c3e28900b1240726cf3add9a6a46aad6b185ca9598129
all runs: OK
false negative chance: 0.000
testing without sub-chunk 2/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 6c1dd1fe5d8a1d43ed96e2e0ed44a88c73c5c039 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 1d1d8e0dd2337ecaea52d4e69f880d226055e39cf648be7cdfe0011e0cffe0f9
all runs: crashed: INFO: task hung in bdev_release
representative crash: INFO: task hung in bdev_release, types: [HANG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
testing commit 6c1dd1fe5d8a1d43ed96e2e0ed44a88c73c5c039 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 8196fe9a3b10e5c50a52ee85e8c00581ba54e05720203d23c3f07806f2ff86f0
all runs: crashed: INFO: task hung in bdev_release
representative crash: INFO: task hung in bdev_release, types: [HANG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
testing commit 6c1dd1fe5d8a1d43ed96e2e0ed44a88c73c5c039 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: bb84add11a7c6e4955062daa944795f8d3e18aa65d73d88e3c7b85cf792d3f3e
all runs: crashed: INFO: task hung in bdev_release
representative crash: INFO: task hung in bdev_release, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 6c1dd1fe5d8a1d43ed96e2e0ed44a88c73c5c039 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 9d113c5d04839133d3fc6a4db1744300aad3c2d3eb77f9f4130e8afff92c0ab3
all runs: crashed: INFO: task hung in bdev_release
representative crash: INFO: task hung in bdev_release, types: [HANG]
the chunk can be dropped
minimized to 404 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_PLATFORM_PROFILE ADDRESS_MASKING ADFS_FS AFFS_FS AFS_FS AFS_FSCACHE AF_KCM AF_RXRPC AF_RXRPC_IPV6 AIX_PARTITION AMIGA_PARTITION ANDROID_BINDERFS ANDROID_BINDER_IPC ANON_VMA_NAME APERTURE_HELPERS AR5523 ARCH_ENABLE_MEMORY_HOTREMOVE ARCH_ENABLE_THP_MIGRATION ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION ARCH_WANT_PMD_MKWRITE ASM_MODVERSIONS ASYNC_CORE ASYNC_MEMCPY ASYNC_PQ ASYNC_RAID6_RECOV ASYNC_TX_DMA ASYNC_XOR AS_HAS_NON_CONST_LEB128 AS_IS_GNU ATARI_PARTITION ATA_GENERIC ATA_OVER_ETH ATH10K ATH10K_CE ATH10K_PCI ATH10K_USB ATH11K ATH6KL ATH6KL_USB ATH9K ATH9K_AHB ATH9K_BTCOEX_SUPPORT ATH9K_CHANNEL_CONTEXT ATH9K_COMMON ATH9K_COMMON_DEBUG 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_FS BCACHEFS_QUOTA 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_DEBUG_FS_ZONED BLK_DEV_BSGLIB BLK_DEV_INTEGRITY BLK_DEV_INTEGRITY_T10 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_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_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_CMTP BT_HCIBCM203X BT_HCIBFUSB BT_HCIBPA10X BT_HCIBTUSB 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_HIDP BT_HS BT_INTEL BT_LE BT_LEDS BT_LE_L2CAP_ECRED BT_MSFTEXT BT_MTK 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_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_VCAN CAN_VXCAN CAPI_TRACE CARL9170 CARL9170_HWRNG CARL9170_LEDS CARL9170_WPC CC_HAS_AUTO_VAR_INIT_ZERO_BARE CC_HAS_UBSAN_BOUNDS_STRICT CC_HAS_ZERO_CALL_USED_REGS CC_NO_ARRAY_BOUNDS 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_BQ24190 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_MBYTES CMDLINE_PARTITION COMEDI COMEDI_DT9812 COMEDI_NI_USB6501 COMEDI_USBDUX COMEDI_USBDUXFAST COMEDI_USBDUXSIGMA COMEDI_USB_DRIVERS COMEDI_VMK80XX COMPAT_NETLINK_MESSAGES COUNTER CPU_IBPB_ENTRY CPU_IBRS_ENTRY CRAMFS CRAMFS_BLOCKDEV CRAMFS_MTD CRASH_CORE CRC4 CRC64 CRC64_ROCKSOFT CRC7 CRC8 CRC_ITU_T CRC_T10DIF 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_CFB CRYPTO_CHACHA20 CRYPTO_CHACHA20POLY1305 CRYPTO_CHACHA20_X86_64 CRYPTO_CRC32 CRYPTO_CRC32C_INTEL CRYPTO_CRC32_PCLMUL CRYPTO_CRC64_ROCKSOFT CRYPTO_CRCT10DIF CRYPTO_CRCT10DIF_PCLMUL 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_ECC CRYPTO_ECDH CRYPTO_ECRDSA CRYPTO_ENGINE CRYPTO_ESSIV CRYPTO_FCRYPT CRYPTO_GHASH_CLMUL_NI_INTEL CRYPTO_HCTR2 CRYPTO_KDF800108_CTR CRYPTO_KEYWRAP 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_MICHAEL_MIC CRYPTO_NHPOLY1305 CRYPTO_NHPOLY1305_AVX2 CRYPTO_NHPOLY1305_SSE2 CRYPTO_OFB 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 CRYPTO_SHA1_SSSE3 CRYPTO_SHA256_SSSE3 CRYPTO_SHA512_SSSE3 CRYPTO_SIMD CRYPTO_SM2 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_VMAC CRYPTO_WP512 CRYPTO_XCBC CRYPTO_XCTR CRYPTO_XTS CRYPTO_XXHASH CUSE CYPRESS_FIRMWARE DAMON DAMON_DBGFS DAMON_PADDR DAMON_RECLAIM DAMON_VADDR DAX DCA DCB DEFAULT_PFIFO_FAST 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 ENCRYPTED_KEYS EXTCON FSCACHE FUSE_FS GPIOLIB HAMRADIO IIO INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_RTRS_CLIENT IOSCHED_BFQ ISDN ISDN_CAPI LIBNVDIMM MAC80211 MAC80211_DEBUGFS MAC80211_LEDS MEDIA_SUPPORT MEMORY_HOTPLUG MEMORY_HOTREMOVE MFD_DLN2 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 WIRELESS_EXT WLAN WLAN_VENDOR_ATH X86_X32_ABI ZONE_DEVICE]
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
testing current HEAD 90d35da658da8cff0d4ecbb5113f5fac9d00eb72
testing commit 90d35da658da8cff0d4ecbb5113f5fac9d00eb72 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 91223f87ab587dcc624d22d35452f457f6fa9391ad264c8688d0db1380c6d7e6
all runs: crashed: INFO: task hung in bdev_release
representative crash: INFO: task hung in bdev_release, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 2h0m27.04540313s (build: 59m1.800310284s, test: 56m10.925311471s)
crash still not fixed or there were kernel test errors
commit msg: Linux 6.8-rc7
crash: INFO: task hung in bdev_release
INFO: task syz-executor.0:2356 blocked for more than 143 seconds.
Not tainted 6.8.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:14424 pid:2356 tgid:2355 ppid:1951 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x613/0x9b0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xab/0x110 kernel/sched/core.c:6817
schedule_preempt_disabled+0x32/0x60 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x449/0x970 kernel/locking/mutex.c:752
bdev_release+0x4f/0x1e0 block/bdev.c:969
blkdev_release+0x10/0x20 block/fops.c:631
__fput+0xf6/0x290 fs/file_table.c:376
task_work_run+0x83/0xb0 kernel/task_work.c:180
get_signal+0x65/0x830 kernel/signal.c:2669
arch_do_signal_or_restart+0x89/0x2b0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0x56/0x1c0 kernel/entry/common.c:212
do_syscall_64+0xa3/0x1a0 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7ff77b87cd29
RSP: 002b:00007ff77c51e0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007ff77b9abf80 RCX: 00007ff77b87cd29
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003
RBP: 00007ff77b8c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007ff77b9abf80 R15: 00007ffdaa43b328
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8377ed00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8377ed00 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8377ed00 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x30/0x100 kernel/locking/lockdep.c:6614
6 locks held by kworker/u4:2/40:
#0: ffff888237c2f1d8 (&rq->__lock){....}-{2:2}, at: raw_spin_rq_lock_nested+0x1f/0x70 kernel/sched/core.c:559
#1: ffffc90000157e58 ((work_completion)(&(&kfence_timer)->work)){....}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc90000157e58 ((work_completion)(&(&kfence_timer)->work)){....}-{0:0}, at: process_scheduled_works+0x1f2/0x4d0 kernel/workqueue.c:2706
#2: ffff888237c1d458 (&base->lock){....}-{2:2}, at: lock_timer_base kernel/time/timer.c:999 [inline]
#2: ffff888237c1d458 (&base->lock){....}-{2:2}, at: __mod_timer+0x16a/0x380 kernel/time/timer.c:1080
#3: ffffffff8508ae80 (&obj_hash[i].lock){....}-{2:2}, at: debug_object_activate+0x56/0x220 lib/debugobjects.c:708
#4: ffffffff83694ae8 (text_mutex){....}-{3:3}, at: arch_jump_label_transform_apply+0x12/0x30 arch/x86/kernel/jump_label.c:145
#5: ffffffff83783a88 (tk_core.seq.seqcount){....}-{0:0}, at: ktime_get+0xb2/0xf0 kernel/time/timekeeping.c:848
1 lock held by klogd/1314:
#0: ffff888237c2f1d8 (&rq->__lock){....}-{2:2}, at: raw_spin_rq_lock_nested+0x1f/0x70 kernel/sched/core.c:559
2 locks held by getty/1386:
#0: ffff888100fac0a0 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x40 drivers/tty/tty_ldisc.c:243
#1: ffffc900029572f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x242/0x910 drivers/tty/n_tty.c:2201
1 lock held by udevd/1953:
#0: ffff888107ed24c8 (&disk->open_mutex){....}-{3:3}, at: bdev_open_by_dev+0xfa/0x290 block/bdev.c:859
1 lock held by syz-executor.0/2356:
#0: ffff888107ed24c8 (&disk->open_mutex){....}-{3:3}, at: bdev_release+0x4f/0x1e0 block/bdev.c:969
1 lock held by syz-executor.0/2761:
#0: ffff888107ed24c8 (&disk->open_mutex){....}-{3:3}, at: bdev_open_by_dev+0xfa/0x290 block/bdev.c:859
1 lock held by syz-executor.0/3164:
#0: ffff888107ed24c8 (&disk->open_mutex){....}-{3:3}, at: bdev_open_by_dev+0xfa/0x290 block/bdev.c:859
1 lock held by syz-executor.0/3567:
#0: ffff888107ed24c8 (&disk->open_mutex){....}-{3:3}, at: bdev_open_by_dev+0xfa/0x290 block/bdev.c:859
1 lock held by syz-executor.0/3970:
#0: ffff888107ed24c8 (&disk->open_mutex){....}-{3:3}, at: bdev_open_by_dev+0xfa/0x290 block/bdev.c:859
1 lock held by syz-executor.0/4373:
#0: ffff888107ed24c8 (&disk->open_mutex){....}-{3:3}, at: bdev_open_by_dev+0xfa/0x290 block/bdev.c:859
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x83/0xd0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x146/0x160 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x8e/0x140 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0x5da/0x600 kernel/hung_task.c:379
kthread+0xeb/0x100 kernel/kthread.c:388
ret_from_fork+0x34/0x40 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 335 Comm: kworker/u4:3 Not tainted 6.8.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline]
RIP: 0010:smp_call_function_many_cond+0x6ee/0xae0 kernel/smp.c:855
Code: c3 f8 ff ff ff 0f 85 60 02 00 00 89 d8 4c 8b 34 c5 00 f8 4e 83 4d 03 37 66 90 41 f7 46 08 01 00 00 00 74 0a f3 90 41 8b 46 08 01 75 f6 ff c3 83 fb 08 72 9c e9 31 02 00 00 f3 0f 1e fa e8 89
RSP: 0018:ffffc900010d7c38 EFLAGS: 00000202
RAX: 0000000000000011 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000800 RSI: ffffffff8347ba70 RDI: ffffffff833379f2
RBP: ffffffff8103db90 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8103db90 R12: ffffffff8103db90
R13: 0000000000000000 R14: ffff888237d34980 R15: ffff888237c30280
FS: 0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f749efb0440 CR3: 0000000003644000 CR4: 0000000000350ef0
Call Trace:
on_each_cpu_cond_mask+0x3a/0x70 kernel/smp.c:1023
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2087 [inline]
text_poke_bp_batch+0x21c/0x310 arch/x86/kernel/alternative.c:2359
text_poke_flush arch/x86/kernel/alternative.c:2488 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2495
arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
static_key_disable_cpuslocked kernel/jump_label.c:235 [inline]
static_key_disable+0x3f/0x60 kernel/jump_label.c:243
toggle_allocation_gate+0xe2/0x130 mm/kfence/core.c:831
process_one_work kernel/workqueue.c:2633 [inline]
process_scheduled_works+0x252/0x4d0 kernel/workqueue.c:2706
worker_thread+0x23d/0x300 kernel/workqueue.c:2787
kthread+0xeb/0x100 kernel/kthread.c:388
ret_from_fork+0x34/0x40 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243