ci2 starts bisection 2024-03-11 11:48:57.800167167 +0000 UTC m=+197828.803994810 bisecting fixing commit since 8fd7f44624538675abadc73f5a44e95016964d22 building syzkaller on 9bd8dcda8c7c494d59bd3132a668f4784ea835c6 ensuring issue is reproducible on original commit 8fd7f44624538675abadc73f5a44e95016964d22 testing commit 8fd7f44624538675abadc73f5a44e95016964d22 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f6105acbc928be9389f35f5e5e8206cd1a0bd546067bf78e69f068eb7578a371 all runs: crashed: possible deadlock in input_event representative crash: possible deadlock in input_event, 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 8fd7f44624538675abadc73f5a44e95016964d22 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 39067d16b41322fa3eebfa039bd363dd05c3328a8353aa3511bf5728d0d9f7fb all runs: crashed: possible deadlock in input_event representative crash: possible deadlock in input_event, types: [LOCKDEP] the bug reproduces without the instrumentation disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed kconfig minimization: base=3820 full=7527 leaves diff=1995 split chunks (needed=false): <1995> split chunk #0 of len 1995 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 8fd7f44624538675abadc73f5a44e95016964d22 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: accf5ce35c4eeaef6bbf16090b594773616ebc1b6f5b1179e846847d8934926c all runs: crashed: possible deadlock in input_event representative crash: possible deadlock in input_event, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [KASAN ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 8fd7f44624538675abadc73f5a44e95016964d22 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 95b498edf303550282547890d542c92eedad2b12b567362d47e6565b003e227a all runs: crashed: possible deadlock in input_event representative crash: possible deadlock in input_event, 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 8fd7f44624538675abadc73f5a44e95016964d22 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6afa18b13fc16a4481181e84e9f96a345e566b557219021264f00bfb13e96f84 all runs: OK false negative chance: 0.000 testing without sub-chunk 4/5 disabling configs for [UBSAN BUG KASAN ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 8fd7f44624538675abadc73f5a44e95016964d22 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3e7474bf01cb8d952ad1ec7c1d3eb10eecfe514bec70f4ef63b269d63c3579b1 all runs: crashed: possible deadlock in input_event representative crash: possible deadlock in input_event, types: [LOCKDEP] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed testing commit 8fd7f44624538675abadc73f5a44e95016964d22 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 9ad2a88b0a324cc57031fb7df2a66c3242cd0f89205ddb7c73c5a82029729fe8 all runs: crashed: possible deadlock in input_event representative crash: possible deadlock in input_event, types: [LOCKDEP] the chunk can be dropped minimized to 399 configs; suspects: [ATM AX25 BRIDGE BRIDGE_NETFILTER CAN CFG80211 CHECKPOINT_RESTORE DVB_CORE FB FSCACHE HAMRADIO HSR INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_USER_ACCESS INPUT_JOYSTICK INPUT_MOUSE IP6_NF_RAW IPV6_MULTIPLE_TABLES IP_NF_RAW IP_SET IP_VS IP_VS_PROTO_ESP IP_VS_PROTO_SCTP IP_VS_RR IP_VS_SED IP_VS_SH IP_VS_TWOS IP_VS_WLC IP_VS_WRR IRQ_BYPASS_MANAGER IRQ_POLL IR_IGORPLUGUSB IR_IGUANA IR_IMON IR_MCEUSB IR_REDRAT3 IR_STREAMZAP IR_TTUSBIR ISDN ISDN_CAPI_MIDDLEWARE JFFS2_CMODE_PRIORITY JFFS2_COMPRESSION_OPTIONS JFFS2_FS JFFS2_FS_POSIX_ACL JFFS2_FS_SECURITY JFFS2_FS_WRITEBUFFER JFFS2_FS_XATTR JFFS2_LZO JFFS2_RTIME JFFS2_RUBIN JFFS2_SUMMARY JFFS2_ZLIB JFS_DEBUG JFS_FS JFS_POSIX_ACL JFS_SECURITY JOYSTICK_IFORCE JOYSTICK_IFORCE_USB JOYSTICK_XPAD JOYSTICK_XPAD_FF JOYSTICK_XPAD_LEDS KARMA_PARTITION KCOV KCOV_ENABLE_COMPARISONS KCOV_INSTRUMENT_ALL KEYS_REQUEST_CACHE KEY_DH_OPERATIONS KEY_NOTIFICATIONS KSM KVM KVM_AMD KVM_ASYNC_PF KVM_COMPAT KVM_GENERIC_DIRTYLOG_READ_PROTECT KVM_MMIO KVM_VFIO KVM_XEN KVM_XFER_TO_GUEST_WORK L2TP L2TP_ETH L2TP_IP L2TP_V3 LAPB LAPBETHER LDM_PARTITION LEDS_TRIGGER_AUDIO LEGACY_PTYS LIBCRC32C LIBNVDIMM LINEAR_RANGES LLC LLC2 LOGIG940_FF LOGIRUMBLEPAD2_FF LOGO LOGO_LINUX_MONO LOGO_LINUX_VGA16 LPC_ICH LRU_GEN LRU_GEN_ENABLED LWTUNNEL LWTUNNEL_BPF LZ4HC_COMPRESS LZ4_COMPRESS MAC80211 MAC80211_DEBUGFS MAC80211_HAS_RC MAC80211_HWSIM MAC80211_MESH MAC80211_RC_DEFAULT_MINSTREL MAC80211_RC_MINSTREL MACSEC MACVLAN MACVTAP MAC_PARTITION MAPPING_DIRTY_HELPERS MD_LINEAR MD_MULTIPATH MD_RAID0 MD_RAID1 MD_RAID10 MD_RAID456 MEDIA_ANALOG_TV_SUPPORT MEDIA_ATTACH MEDIA_CONTROLLER MEDIA_CONTROLLER_DVB MEDIA_CONTROLLER_REQUEST_API MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_SUPPORT_FILTER MEDIA_TUNER MEDIA_TUNER_MSI001 MEMORY_BALLOON MEMORY_HOTPLUG MEMORY_HOTPLUG_DEFAULT_ONLINE MEMORY_ISOLATION MEMREGION MEMSTICK MEMSTICK_REALTEK_USB MEM_SOFT_DIRTY MFD_CORE MFD_SYSCON MHI_BUS MHI_WWAN_CTRL MHP_MEMMAP_ON_MEMORY MICROCHIP_PHY MINIX_FS MINIX_SUBPARTITION MISC_RTSX MISC_RTSX_USB MISDN MISDN_DSP MISDN_HFCUSB MISDN_L1OIP MKISS MLX4_CORE MLX4_INFINIBAND MMC MMC_REALTEK_USB MMC_USHC MMC_VUB300 MMU_NOTIFIER MODULE_SRCVERSION_ALL MODVERSIONS MOST MOUSE_APPLETOUCH MOUSE_BCM5974 MOUSE_PS2 MOUSE_PS2_ALPS MOUSE_PS2_BYD MOUSE_PS2_CYPRESS MOUSE_PS2_FOCALTECH MOUSE_PS2_LIFEBOOK MOUSE_PS2_LOGIPS2PP MOUSE_PS2_SMBUS MOUSE_PS2_SYNAPTICS MOUSE_PS2_SYNAPTICS_SMBUS MOUSE_PS2_TRACKPOINT MOUSE_SYNAPTICS_USB MPLS MPLS_IPTUNNEL MPLS_ROUTING MPTCP MPTCP_IPV6 MRP MTD MTD_BLKDEVS MTD_BLOCK MTD_BLOCK2MTD MTD_CFI_I1 MTD_CFI_I2 MTD_MAP_BANK_WIDTH_1 MTD_MAP_BANK_WIDTH_2 MTD_MAP_BANK_WIDTH_4 MTD_MTDRAM MTD_PHRAM MTD_SLRAM MUSB_PIO_ONLY ND_BTT ND_CLAIM ND_PFN NETDEVSIM NETFILTER_ADVANCED NETFILTER_FAMILY_ARP NETFILTER_FAMILY_BRIDGE NETFILTER_NETLINK_ACCT NETFILTER_NETLINK_GLUE_CT NETFILTER_NETLINK_OSF NETFILTER_NETLINK_QUEUE NETFILTER_SYNPROXY NETFILTER_XT_CONNMARK NETFILTER_XT_MATCH_BPF NETFILTER_XT_MATCH_CGROUP NETFILTER_XT_MATCH_CLUSTER NETFILTER_XT_MATCH_COMMENT NETFILTER_XT_MATCH_CONNBYTES NETFILTER_XT_MATCH_CONNLABEL NETFILTER_XT_MATCH_CONNLIMIT NETFILTER_XT_MATCH_CONNMARK NETFILTER_XT_MATCH_CPU NETFILTER_XT_MATCH_DCCP NETFILTER_XT_MATCH_DEVGROUP NETFILTER_XT_MATCH_DSCP NETFILTER_XT_MATCH_ECN NETFILTER_XT_MATCH_ESP NETFILTER_XT_MATCH_HASHLIMIT NETFILTER_XT_MATCH_HELPER NETFILTER_XT_MATCH_HL NETFILTER_XT_MATCH_IPCOMP NETFILTER_XT_MATCH_IPRANGE NETFILTER_XT_MATCH_IPVS NETFILTER_XT_MATCH_L2TP NETFILTER_XT_MATCH_LENGTH NETFILTER_XT_MATCH_LIMIT NETFILTER_XT_MATCH_MAC NETFILTER_XT_MATCH_MARK NETFILTER_XT_MATCH_MULTIPORT NETFILTER_XT_MATCH_NFACCT NETFILTER_XT_MATCH_OSF NETFILTER_XT_MATCH_OWNER NETFILTER_XT_MATCH_PHYSDEV NETFILTER_XT_MATCH_PKTTYPE NETFILTER_XT_MATCH_QUOTA NETFILTER_XT_MATCH_RATEEST NETFILTER_XT_MATCH_REALM NETFILTER_XT_MATCH_RECENT NETFILTER_XT_MATCH_SCTP NETFILTER_XT_MATCH_SOCKET NETFILTER_XT_MATCH_STATISTIC NETFILTER_XT_MATCH_STRING NETFILTER_XT_MATCH_TCPMSS NETFILTER_XT_MATCH_TIME NETFILTER_XT_MATCH_U32 NETFILTER_XT_SET NETFILTER_XT_TARGET_AUDIT NETFILTER_XT_TARGET_CHECKSUM NETFILTER_XT_TARGET_CLASSIFY NETFILTER_XT_TARGET_CONNMARK NETFILTER_XT_TARGET_CT NETFILTER_XT_TARGET_DSCP NETFILTER_XT_TARGET_HL NETFILTER_XT_TARGET_HMARK NETFILTER_XT_TARGET_IDLETIMER NETFILTER_XT_TARGET_LED NETFILTER_XT_TARGET_MARK NETFILTER_XT_TARGET_NETMAP NETFILTER_XT_TARGET_NFQUEUE NETFILTER_XT_TARGET_NOTRACK NETFILTER_XT_TARGET_RATEEST NETFILTER_XT_TARGET_REDIRECT NETFILTER_XT_TARGET_TCPOPTSTRIP NETFILTER_XT_TARGET_TEE NETFILTER_XT_TARGET_TPROXY NETFILTER_XT_TARGET_TRACE NETLABEL NETLINK_DIAG NETROM NET_9P_RDMA NET_ACT_BPF NET_ACT_CONNMARK NET_ACT_CSUM NET_ACT_CT NET_ACT_CTINFO NET_ACT_GATE NET_ACT_IFE NET_ACT_IPT NET_ACT_MPLS NET_ACT_NAT NET_ACT_PEDIT NET_ACT_POLICE NET_ACT_SAMPLE NET_ACT_SIMP NET_ACT_SKBEDIT NET_ACT_SKBMOD NET_ACT_TUNNEL_KEY NET_ACT_VLAN NET_CLS_BASIC NET_CLS_BPF NET_CLS_FLOW NET_CLS_FLOWER NET_CLS_FW NET_CLS_MATCHALL NET_CLS_ROUTE4 NET_DEVLINK NET_DROP_MONITOR NET_DSA NET_DSA_TAG_BRCM NET_DSA_TAG_BRCM_COMMON NET_DSA_TAG_BRCM_PREPEND NET_DSA_TAG_MTK NET_DSA_TAG_QCA NET_DSA_TAG_RTL4_A NET_EMATCH_CANID NET_EMATCH_CMP NET_EMATCH_IPSET NET_EMATCH_IPT NET_EMATCH_META NET_EMATCH_NBYTE NET_EMATCH_TEXT NET_EMATCH_U32 NET_FC NET_FOU NET_FOU_IP_TUNNELS NET_IFE NET_IFE_SKBMARK NET_IFE_SKBPRIO NET_IFE_SKBTCINDEX NET_IPGRE NET_IPGRE_BROADCAST NET_IPGRE_DEMUX NET_IPIP NET_IPVTI NET_KEY NET_KEY_MIGRATE NET_L3_MASTER_DEV NET_MPLS_GSO NET_NCSI NET_NSH NET_REDIRECT NET_SCH_ATM NET_SCH_CAKE NET_SCH_CBQ NET_SCH_CBS NET_SCH_CHOKE NET_SCH_CODEL NET_SCH_DRR NET_SCH_DSMARK NET_SCH_ETF NET_SCH_ETS NET_SCH_FQ NET_SCH_FQ_CODEL NET_SCH_FQ_PIE NET_SCH_GRED NET_SCH_HFSC NET_SCH_HHF NET_SCH_HTB NET_SCH_INGRESS NET_SCH_MQPRIO NET_SCH_MULTIQ NET_SCH_NETEM NET_SCH_PIE NET_SCH_PLUG NET_SCH_PRIO NET_SCH_QFQ NET_SCH_RED NET_SCH_SFB NET_SCH_SFQ NET_SCH_SKBPRIO NET_SCH_TAPRIO NET_SCH_TBF NET_SCH_TEQL NET_SOCK_MSG NET_SWITCHDEV NET_TC_SKB_EXT NET_TEAM NET_TEAM_MODE_ACTIVEBACKUP NET_TEAM_MODE_BROADCAST NET_TEAM_MODE_LOADBALANCE NET_TEAM_MODE_RANDOM NET_TEAM_MODE_ROUNDROBIN NET_UDP_TUNNEL NET_VRF NFC NFC_DIGITAL NFC_FDP NFC_HCI NFC_MRVL NFC_MRVL_USB NFC_NCI NFC_NCI_UART NFC_PN533 NFC_PN533_USB NFC_PORT100 NFC_SHDLC NFC_SIM NFC_VIRTUAL_NCI NFSD NFSD_BLOCKLAYOUT NFSD_FLEXFILELAYOUT NFSD_PNFS NFSD_SCSILAYOUT NFSD_V2_ACL NFSD_V3_ACL NFSD_V4 NFSD_V4_2_INTER_SSC NFSD_V4_SECURITY_LABEL NFS_FSCACHE NFS_V4_1 NFS_V4_2 NFS_V4_2_READ_PLUS NFS_V4_2_SSC_HELPER NFS_V4_SECURITY_LABEL NFT_BRIDGE_META NFT_BRIDGE_REJECT NFT_COMPAT NFT_CONNLIMIT NFT_CT NFT_DUP_IPV4 NFT_DUP_IPV6 NFT_DUP_NETDEV NFT_FIB NFT_FIB_INET NFT_FIB_IPV4 NFT_FIB_IPV6 NFT_FIB_NETDEV NFT_FLOW_OFFLOAD NFT_HASH NFT_LIMIT NFT_LOG NFT_MASQ NFT_NAT NFT_NUMGEN NFT_OSF NFT_QUEUE NFT_QUOTA NFT_REDIR NFT_REJECT NFT_REJECT_INET NFT_REJECT_IPV4 NFT_REJECT_IPV6 NFT_REJECT_NETDEV NFT_SOCKET NFT_SYNPROXY NFT_TPROXY NFT_TUNNEL NFT_XFRM NF_CONNTRACK_AMANDA NF_CONNTRACK_BRIDGE NF_CONNTRACK_BROADCAST NF_CONNTRACK_EVENTS NF_CONNTRACK_H323 NF_CONNTRACK_LABELS NF_CONNTRACK_MARK NF_CONNTRACK_NETBIOS_NS NF_CONNTRACK_PPTP NF_CONNTRACK_SANE NF_CONNTRACK_SNMP NF_CONNTRACK_TFTP NF_CONNTRACK_TIMEOUT NF_CONNTRACK_TIMESTAMP NF_CONNTRACK_ZONES NF_CT_NETLINK_HELPER NF_CT_NETLINK_TIMEOUT NF_CT_PROTO_DCCP NF_CT_PROTO_GRE NF_CT_PROTO_SCTP NF_CT_PROTO_UDPLITE NF_DUP_IPV4 NF_DUP_IPV6 NF_DUP_NETDEV NF_FLOW_TABLE NF_FLOW_TABLE_INET NF_NAT_AMANDA NF_NAT_H323 NF_NAT_PPTP NF_NAT_REDIRECT NF_NAT_SNMP_BASIC NF_NAT_TFTP NF_SOCKET_IPV4 NF_SOCKET_IPV6 NF_TABLES NF_TABLES_ARP NF_TABLES_BRIDGE NF_TABLES_INET NF_TABLES_IPV4 NF_TABLES_IPV6 NF_TABLES_NETDEV NF_TPROXY_IPV4 NF_TPROXY_IPV6 PARTITION_ADVANCED PSAMPLE RC_CORE RC_DEVICES RFKILL SPI USB_GADGET USB_MUSB_HDRC VIDEO_DEV WAN WATCH_QUEUE WIRELESS WLAN WWAN X25 X86_X32_ABI] disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP HANG], they are not needed testing current HEAD 61adba85cc40287232a539e607164f273260e0fe testing commit 61adba85cc40287232a539e607164f273260e0fe gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0cec8508627d759eb6c581e556edf9f991f5eb17cb2b065fb660b111f4eaf9e1 all runs: crashed: possible deadlock in input_event representative crash: possible deadlock in input_event, types: [LOCKDEP] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 1h2m23.041258439s (build: 30m47.159674411s, test: 28m55.938176562s) crash still not fixed or there were kernel test errors commit msg: Linux 6.1.81 crash: possible deadlock in input_event ===================================================== WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected 6.1.81-syzkaller #0 Not tainted ----------------------------------------------------- syz-executor.0/2827 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: ffff888107f70080 (&new->fa_lock){....}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:996 [inline] ffff888107f70080 (&new->fa_lock){....}-{2:2}, at: kill_fasync+0x153/0x370 fs/fcntl.c:1017 and this task is already holding: ffff888103aa2028 (&client->buffer_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] ffff888103aa2028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values+0x81/0x3d0 drivers/input/evdev.c:261 which would create a new lock dependency: (&client->buffer_lock){....}-{2:2} -> (&new->fa_lock){....}-{2:2} but this new dependency connects a HARDIRQ-irq-safe lock: (&dev->event_lock){-...}-{2:2} ... which became HARDIRQ-irq-safe at: lock_acquire+0xe3/0x270 kernel/locking/lockdep.c:5662 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x5d/0x90 kernel/locking/spinlock.c:162 input_event+0x73/0xb0 drivers/input/input.c:430 input_report_key include/linux/input.h:425 [inline] psmouse_report_standard_buttons drivers/input/mouse/psmouse-base.c:121 [inline] psmouse_report_standard_packet+0x2f/0xf0 drivers/input/mouse/psmouse-base.c:139 psmouse_process_byte+0x2a0/0x2d0 drivers/input/mouse/psmouse-base.c:230 psmouse_handle_byte+0x17/0x190 drivers/input/mouse/psmouse-base.c:272 psmouse_interrupt+0x368/0x650 drivers/input/mouse/psmouse-base.c:424 serio_interrupt+0x48/0xc0 drivers/input/serio/serio.c:998 i8042_interrupt+0x2be/0x540 drivers/input/serio/i8042.c:606 __handle_irq_event_percpu+0xf3/0x460 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0x35/0xa0 kernel/irq/handle.c:210 handle_edge_irq+0xff/0x370 kernel/irq/chip.c:819 generic_handle_irq_desc include/linux/irqdesc.h:158 [inline] handle_irq arch/x86/kernel/irq.c:231 [inline] __common_interrupt+0xa3/0x140 arch/x86/kernel/irq.c:250 common_interrupt+0x9a/0xc0 arch/x86/kernel/irq.c:240 asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:644 console_emit_next_record+0x760/0x7b0 console_unlock+0x144/0x330 kernel/printk/printk.c:2871 vprintk_emit+0x49c/0x5a0 kernel/printk/printk.c:2268 _printk+0x62/0x80 kernel/printk/printk.c:2293 sock_register+0x12b/0x130 net/socket.c:3155 ipsec_pfkey_init+0x59/0xa1 net/key/af_key.c:3913 do_one_initcall+0x17b/0x480 init/main.c:1296 do_initcall_level+0xd7/0x1aa init/main.c:1369 do_initcalls+0x49/0x81 init/main.c:1385 kernel_init_freeable+0x212/0x2a4 init/main.c:1624 kernel_init+0x17/0x290 init/main.c:1512 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307 to a HARDIRQ-irq-unsafe lock: (tasklist_lock){.+.+}-{2:2} ... which became HARDIRQ-irq-unsafe at: ... lock_acquire+0xe3/0x270 kernel/locking/lockdep.c:5662 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 do_wait+0xf8/0x4b0 kernel/exit.c:1602 kernel_wait+0x9e/0x100 kernel/exit.c:1792 call_usermodehelper_exec_sync kernel/umh.c:140 [inline] call_usermodehelper_exec_work+0x8f/0x120 kernel/umh.c:167 process_one_work+0x30d/0x700 kernel/workqueue.c:2292 worker_thread+0x324/0x580 kernel/workqueue.c:2439 kthread+0xf5/0x120 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307 other info that might help us debug this: Chain exists of: &dev->event_lock --> &client->buffer_lock --> tasklist_lock Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(tasklist_lock); local_irq_disable(); lock(&dev->event_lock); lock(&client->buffer_lock); lock(&dev->event_lock); *** DEADLOCK *** 7 locks held by syz-executor.0/2827: #0: ffff8881052b6110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_write+0x109/0x370 drivers/input/evdev.c:513 #1: ffff8881003faa30 (&dev->event_lock){-...}-{2:2}, at: input_inject_event+0x79/0x2c0 drivers/input/input.c:456 #2: ffffffff83ba8990 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:319 [inline] #2: ffffffff83ba8990 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:760 [inline] #2: ffffffff83ba8990 (rcu_read_lock){....}-{1:2}, at: input_inject_event+0x89/0x2c0 drivers/input/input.c:458 #3: ffffffff83ba8990 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:319 [inline] #3: ffffffff83ba8990 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:760 [inline] #3: ffffffff83ba8990 (rcu_read_lock){....}-{1:2}, at: input_pass_values+0x67/0x720 drivers/input/input.c:151 #4: ffffffff83ba8990 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:319 [inline] #4: ffffffff83ba8990 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:760 [inline] #4: ffffffff83ba8990 (rcu_read_lock){....}-{1:2}, at: evdev_events+0x35/0x280 drivers/input/evdev.c:298 #5: ffff888103aa2028 (&client->buffer_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] #5: ffff888103aa2028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values+0x81/0x3d0 drivers/input/evdev.c:261 #6: ffffffff83ba8990 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:319 [inline] #6: ffffffff83ba8990 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:760 [inline] #6: ffffffff83ba8990 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x2c/0x370 fs/fcntl.c:1016 the dependencies between HARDIRQ-irq-safe lock and the holding lock: -> (&dev->event_lock){-...}-{2:2} { IN-HARDIRQ-W at: lock_acquire+0xe3/0x270 kernel/locking/lockdep.c:5662 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x5d/0x90 kernel/locking/spinlock.c:162 input_event+0x73/0xb0 drivers/input/input.c:430 input_report_key include/linux/input.h:425 [inline] psmouse_report_standard_buttons drivers/input/mouse/psmouse-base.c:121 [inline] psmouse_report_standard_packet+0x2f/0xf0 drivers/input/mouse/psmouse-base.c:139 psmouse_process_byte+0x2a0/0x2d0 drivers/input/mouse/psmouse-base.c:230 psmouse_handle_byte+0x17/0x190 drivers/input/mouse/psmouse-base.c:272 psmouse_interrupt+0x368/0x650 drivers/input/mouse/psmouse-base.c:424 serio_interrupt+0x48/0xc0 drivers/input/serio/serio.c:998 i8042_interrupt+0x2be/0x540 drivers/input/serio/i8042.c:606 __handle_irq_event_percpu+0xf3/0x460 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0x35/0xa0 kernel/irq/handle.c:210 handle_edge_irq+0xff/0x370 kernel/irq/chip.c:819 generic_handle_irq_desc include/linux/irqdesc.h:158 [inline] handle_irq arch/x86/kernel/irq.c:231 [inline] __common_interrupt+0xa3/0x140 arch/x86/kernel/irq.c:250 common_interrupt+0x9a/0xc0 arch/x86/kernel/irq.c:240 asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:644 console_emit_next_record+0x760/0x7b0 console_unlock+0x144/0x330 kernel/printk/printk.c:2871 vprintk_emit+0x49c/0x5a0 kernel/printk/printk.c:2268 _printk+0x62/0x80 kernel/printk/printk.c:2293 sock_register+0x12b/0x130 net/socket.c:3155 ipsec_pfkey_init+0x59/0xa1 net/key/af_key.c:3913 do_one_initcall+0x17b/0x480 init/main.c:1296 do_initcall_level+0xd7/0x1aa init/main.c:1369 do_initcalls+0x49/0x81 init/main.c:1385 kernel_init_freeable+0x212/0x2a4 init/main.c:1624 kernel_init+0x17/0x290 init/main.c:1512 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307 INITIAL USE at: lock_acquire+0xe3/0x270 kernel/locking/lockdep.c:5662 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x5d/0x90 kernel/locking/spinlock.c:162 input_inject_event+0x79/0x2c0 drivers/input/input.c:456 kbd_update_leds_helper+0x5a/0xb0 drivers/tty/vt/keyboard.c:1118 kbd_start+0x4e/0x60 drivers/tty/vt/keyboard.c:1622 input_register_handle+0x13c/0x160 drivers/input/input.c:2579 kbd_connect+0x45/0xb0 drivers/tty/vt/keyboard.c:1589 input_attach_handler drivers/input/input.c:1060 [inline] input_register_device+0x754/0x8a0 drivers/input/input.c:2396 atkbd_connect+0x3ab/0x460 drivers/input/keyboard/atkbd.c:1321 serio_connect_driver drivers/input/serio/serio.c:44 [inline] serio_driver_probe+0x37/0x50 drivers/input/serio/serio.c:775 really_probe+0x1c5/0x690 drivers/base/dd.c:639 __driver_probe_device+0xdf/0x1e0 drivers/base/dd.c:785 driver_probe_device+0x2e/0x240 drivers/base/dd.c:815 __driver_attach+0x252/0x390 drivers/base/dd.c:1201 bus_for_each_dev+0xb0/0x100 drivers/base/bus.c:301 serio_attach_driver drivers/input/serio/serio.c:804 [inline] serio_handle_event+0x291/0x4d0 drivers/input/serio/serio.c:224 process_one_work+0x30d/0x700 kernel/workqueue.c:2292 worker_thread+0x324/0x580 kernel/workqueue.c:2439 kthread+0xf5/0x120 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307 } ... key at: [] input_allocate_device.__key.6+0x0/0x10 -> (&client->buffer_lock){....}-{2:2} { INITIAL USE at: lock_acquire+0xe3/0x270 kernel/locking/lockdep.c:5662 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] evdev_pass_values+0x81/0x3d0 drivers/input/evdev.c:261 evdev_events+0x157/0x280 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:127 [inline] input_pass_values+0x2fe/0x720 drivers/input/input.c:159 input_event_dispose+0x159/0x1d0 drivers/input/input.c:374 input_inject_event+0x1a7/0x2c0 drivers/input/input.c:461 evdev_write+0x2a3/0x370 drivers/input/evdev.c:530 vfs_write+0x153/0x460 fs/read_write.c:582 ksys_write+0xc2/0x170 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd } ... key at: [] evdev_open.__key.14+0x0/0x10 ... acquired at: __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] evdev_pass_values+0x81/0x3d0 drivers/input/evdev.c:261 evdev_events+0x157/0x280 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:127 [inline] input_pass_values+0x2fe/0x720 drivers/input/input.c:159 input_event_dispose+0x159/0x1d0 drivers/input/input.c:374 input_inject_event+0x1a7/0x2c0 drivers/input/input.c:461 evdev_write+0x2a3/0x370 drivers/input/evdev.c:530 vfs_write+0x153/0x460 fs/read_write.c:582 ksys_write+0xc2/0x170 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd the dependencies between the lock to be acquired and HARDIRQ-irq-unsafe lock: -> (tasklist_lock){.+.+}-{2:2} { HARDIRQ-ON-R at: lock_acquire+0xe3/0x270 kernel/locking/lockdep.c:5662 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 do_wait+0xf8/0x4b0 kernel/exit.c:1602 kernel_wait+0x9e/0x100 kernel/exit.c:1792 call_usermodehelper_exec_sync kernel/umh.c:140 [inline] call_usermodehelper_exec_work+0x8f/0x120 kernel/umh.c:167 process_one_work+0x30d/0x700 kernel/workqueue.c:2292 worker_thread+0x324/0x580 kernel/workqueue.c:2439 kthread+0xf5/0x120 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307 SOFTIRQ-ON-R at: lock_acquire+0xe3/0x270 kernel/locking/lockdep.c:5662 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 do_wait+0xf8/0x4b0 kernel/exit.c:1602 kernel_wait+0x9e/0x100 kernel/exit.c:1792 call_usermodehelper_exec_sync kernel/umh.c:140 [inline] call_usermodehelper_exec_work+0x8f/0x120 kernel/umh.c:167 process_one_work+0x30d/0x700 kernel/workqueue.c:2292 worker_thread+0x324/0x580 kernel/workqueue.c:2439 kthread+0xf5/0x120 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307 INITIAL USE at: lock_acquire+0xe3/0x270 kernel/locking/lockdep.c:5662 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0x58/0x80 kernel/locking/spinlock.c:326 copy_process+0x102d/0x1b00 kernel/fork.c:2401 kernel_clone+0x18b/0x570 kernel/fork.c:2682 user_mode_thread+0xca/0xf0 kernel/fork.c:2758 rest_init+0x21/0x290 init/main.c:696 start_kernel+0x0/0x415 init/main.c:891 start_kernel+0x3da/0x415 init/main.c:1138 secondary_startup_64_no_verify+0xcf/0xdb INITIAL READ USE at: lock_acquire+0xe3/0x270 kernel/locking/lockdep.c:5662 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 do_wait+0xf8/0x4b0 kernel/exit.c:1602 kernel_wait+0x9e/0x100 kernel/exit.c:1792 call_usermodehelper_exec_sync kernel/umh.c:140 [inline] call_usermodehelper_exec_work+0x8f/0x120 kernel/umh.c:167 process_one_work+0x30d/0x700 kernel/workqueue.c:2292 worker_thread+0x324/0x580 kernel/workqueue.c:2439 kthread+0xf5/0x120 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307 } ... key at: [] tasklist_lock+0x18/0x40 ... acquired at: __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 send_sigio+0xbd/0x280 fs/fcntl.c:792 kill_fasync_rcu fs/fcntl.c:1003 [inline] kill_fasync+0x1a7/0x370 fs/fcntl.c:1017 lease_break_callback+0x22/0x30 fs/locks.c:521 __break_lease+0x233/0x9b0 fs/locks.c:1521 break_lease include/linux/fs.h:2714 [inline] do_dentry_open+0x3e2/0x6a0 fs/open.c:873 do_open fs/namei.c:3628 [inline] path_openat+0x116c/0x1580 fs/namei.c:3785 do_filp_open+0xc5/0x1b0 fs/namei.c:3812 do_sys_openat2+0xb5/0x250 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_open fs/open.c:1342 [inline] __se_sys_open fs/open.c:1338 [inline] __x64_sys_open+0xc7/0xf0 fs/open.c:1338 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> (&f->f_owner.lock){....}-{2:2} { INITIAL USE at: lock_acquire+0xe3/0x270 kernel/locking/lockdep.c:5662 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0x58/0x80 kernel/locking/spinlock.c:326 f_modown+0x29/0x130 fs/fcntl.c:91 __f_setown fs/fcntl.c:110 [inline] f_setown_ex fs/fcntl.c:200 [inline] do_fcntl+0xb3d/0xc00 fs/fcntl.c:383 __do_sys_fcntl fs/fcntl.c:454 [inline] __se_sys_fcntl+0xb6/0x170 fs/fcntl.c:439 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd INITIAL READ USE at: lock_acquire+0xe3/0x270 kernel/locking/lockdep.c:5662 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x65/0xa0 kernel/locking/spinlock.c:236 send_sigio+0x25/0x280 fs/fcntl.c:778 kill_fasync_rcu fs/fcntl.c:1003 [inline] kill_fasync+0x1a7/0x370 fs/fcntl.c:1017 lease_break_callback+0x22/0x30 fs/locks.c:521 __break_lease+0x233/0x9b0 fs/locks.c:1521 break_lease include/linux/fs.h:2714 [inline] do_dentry_open+0x3e2/0x6a0 fs/open.c:873 do_open fs/namei.c:3628 [inline] path_openat+0x116c/0x1580 fs/namei.c:3785 do_filp_open+0xc5/0x1b0 fs/namei.c:3812 do_sys_openat2+0xb5/0x250 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_open fs/open.c:1342 [inline] __se_sys_open fs/open.c:1338 [inline] __x64_sys_open+0xc7/0xf0 fs/open.c:1338 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd } ... key at: [] __alloc_file.__key+0x0/0x10 ... acquired at: __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x65/0xa0 kernel/locking/spinlock.c:236 send_sigio+0x25/0x280 fs/fcntl.c:778 kill_fasync_rcu fs/fcntl.c:1003 [inline] kill_fasync+0x1a7/0x370 fs/fcntl.c:1017 lease_break_callback+0x22/0x30 fs/locks.c:521 __break_lease+0x233/0x9b0 fs/locks.c:1521 break_lease include/linux/fs.h:2714 [inline] do_dentry_open+0x3e2/0x6a0 fs/open.c:873 do_open fs/namei.c:3628 [inline] path_openat+0x116c/0x1580 fs/namei.c:3785 do_filp_open+0xc5/0x1b0 fs/namei.c:3812 do_sys_openat2+0xb5/0x250 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_open fs/open.c:1342 [inline] __se_sys_open fs/open.c:1338 [inline] __x64_sys_open+0xc7/0xf0 fs/open.c:1338 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> (&new->fa_lock){....}-{2:2} { INITIAL READ USE at: lock_acquire+0xe3/0x270 kernel/locking/lockdep.c:5662 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x65/0xa0 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:996 [inline] kill_fasync+0x153/0x370 fs/fcntl.c:1017 lease_break_callback+0x22/0x30 fs/locks.c:521 __break_lease+0x233/0x9b0 fs/locks.c:1521 break_lease include/linux/fs.h:2714 [inline] do_dentry_open+0x3e2/0x6a0 fs/open.c:873 do_open fs/namei.c:3628 [inline] path_openat+0x116c/0x1580 fs/namei.c:3785 do_filp_open+0xc5/0x1b0 fs/namei.c:3812 do_sys_openat2+0xb5/0x250 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_open fs/open.c:1342 [inline] __se_sys_open fs/open.c:1338 [inline] __x64_sys_open+0xc7/0xf0 fs/open.c:1338 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd } ... key at: [] fasync_insert_entry.__key+0x0/0x10 ... acquired at: __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x65/0xa0 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:996 [inline] kill_fasync+0x153/0x370 fs/fcntl.c:1017 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values+0x2e4/0x3d0 drivers/input/evdev.c:278 evdev_events+0x157/0x280 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:127 [inline] input_pass_values+0x2fe/0x720 drivers/input/input.c:159 input_event_dispose+0x159/0x1d0 drivers/input/input.c:374 input_inject_event+0x1a7/0x2c0 drivers/input/input.c:461 evdev_write+0x2a3/0x370 drivers/input/evdev.c:530 vfs_write+0x153/0x460 fs/read_write.c:582 ksys_write+0xc2/0x170 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd stack backtrace: CPU: 0 PID: 2827 Comm: syz-executor.0 Not tainted 6.1.81-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xfa/0x181 lib/dump_stack.c:106 print_bad_irq_dependency kernel/locking/lockdep.c:2604 [inline] check_irq_usage kernel/locking/lockdep.c:2843 [inline] check_prev_add kernel/locking/lockdep.c:3094 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x2753/0x2830 kernel/locking/lockdep.c:5049 lock_acquire+0xe3/0x270 kernel/locking/lockdep.c:5662 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x65/0xa0 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:996 [inline] kill_fasync+0x153/0x370 fs/fcntl.c:1017 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values+0x2e4/0x3d0 drivers/input/evdev.c:278 evdev_events+0x157/0x280 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:127 [inline] input_pass_values+0x2fe/0x720 drivers/input/input.c:159 input_event_dispose+0x159/0x1d0 drivers/input/input.c:374 input_inject_event+0x1a7/0x2c0 drivers/input/input.c:461 evdev_write+0x2a3/0x370 drivers/input/evdev.c:530 vfs_write+0x153/0x460 fs/read_write.c:582 ksys_write+0xc2/0x170 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f7e281e4da9 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:00007f7e27d670c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f7e28313f80 RCX: 00007f7e281e4da9 RDX: 0000000000002ad8 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007f7e2823147a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007f7e28313f80 R15: 00007ffd9f3d5118