ci2 starts bisection 2024-04-20 19:34:23.977912925 +0000 UTC m=+216387.466851554
bisecting fixing commit since 38fb82ecd144fa22c5e41cb6e56f1fa8c98d6f61
building syzkaller on d0304e9cb9f633eb4de1ecbb4e7328ae745198a8
ensuring issue is reproducible on original commit 38fb82ecd144fa22c5e41cb6e56f1fa8c98d6f61

testing commit 38fb82ecd144fa22c5e41cb6e56f1fa8c98d6f61 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 7cc139768773949dc4e89e0a80eea027f07a92c2facb2557974e9f5e3c99e366
run #0: crashed: INFO: rcu detected stall in sys_futex
run #1: crashed: INFO: rcu detected stall in sys_clock_adjtime
run #2: crashed: INFO: rcu detected stall in sys_clock_adjtime
run #3: crashed: INFO: rcu detected stall in process_one_work
run #4: crashed: INFO: rcu detected stall in sys_clock_adjtime
run #5: crashed: INFO: rcu detected stall in sys_clock_adjtime
run #6: crashed: INFO: rcu detected stall in sync_hw_clock
run #7: crashed: INFO: rcu detected stall in sys_futex
run #8: crashed: INFO: rcu detected stall in sys_clock_adjtime
run #9: crashed: INFO: rcu detected stall in sys_clock_adjtime
run #10: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #11: crashed: INFO: rcu detected stall in sys_clone
run #12: crashed: INFO: rcu detected stall in process_one_work
run #13: crashed: INFO: rcu detected stall in do_idle
run #14: crashed: INFO: rcu detected stall in rtc_timer_do_work
run #15: crashed: INFO: rcu detected stall in process_one_work
run #16: crashed: INFO: rcu detected stall in sys_clock_adjtime
run #17: crashed: INFO: rcu detected stall in corrupted
run #18: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #19: crashed: INFO: rcu detected stall in process_one_work
representative crash: INFO: rcu detected stall in sys_futex, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 38fb82ecd144fa22c5e41cb6e56f1fa8c98d6f61 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 271c9403a62c878969a13499d3a826db73eee5dfbf9b63c51cd4ec3b81541632
run #0: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #1: crashed: INFO: rcu detected stall in sys_newfstatat
run #2: crashed: INFO: rcu detected stall in sys_mprotect
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #5: crashed: INFO: rcu detected stall in sys_exit_group
run #6: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #7: crashed: INFO: rcu detected stall in process_one_work
run #8: crashed: INFO: rcu detected stall in do_idle
run #9: crashed: INFO: rcu detected stall in sys_umount
representative crash: INFO: rcu detected stall in syscall_exit_to_user_mode, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
kconfig minimization: base=3820 full=7526 leaves diff=1994
split chunks (needed=false): <1994>
split chunk #0 of len 1994 into 5 parts
testing without sub-chunk 1/5
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
testing commit 38fb82ecd144fa22c5e41cb6e56f1fa8c98d6f61 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 3b9fc0fb6e45b2113303704f81e6c5265c6457aa52e86c711bf83e50b8d2910b
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in sys_clock_adjtime
run #4: crashed: INFO: rcu detected stall in do_idle
run #5: crashed: INFO: rcu detected stall in sys_mprotect
run #6: crashed: INFO: rcu detected stall in sys_getdents64
run #7: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #8: crashed: INFO: rcu detected stall in sys_newfstatat
run #9: crashed: INFO: rcu detected stall in sys_openat
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing commit 38fb82ecd144fa22c5e41cb6e56f1fa8c98d6f61 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b263dea7ac6f014d681c4fb761f02d5da0d1ac2a5e9b1d82938030d319900655
run #0: crashed: INFO: rcu detected stall in sys_openat
run #1: crashed: INFO: rcu detected stall in sys_clone
run #2: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in nf_setsockopt
run #5: crashed: INFO: rcu detected stall in sys_clone
run #6: crashed: INFO: rcu detected stall in sys_clone
run #7: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #8: crashed: INFO: rcu detected stall in process_one_work
run #9: crashed: INFO: rcu detected stall in sock_close
representative crash: INFO: rcu detected stall in sys_openat, types: [HANG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 38fb82ecd144fa22c5e41cb6e56f1fa8c98d6f61 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 9554f1f4c111d29fd28160c89148b2092d4e73147195aea114774784359c7a5c
all runs: OK
false negative chance: 0.000
testing without sub-chunk 4/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 38fb82ecd144fa22c5e41cb6e56f1fa8c98d6f61 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 26020cadda53296b244040eb03f4876878081cc46d9751e02ac982559c099396
run #0: crashed: INFO: rcu detected stall in sys_clone3
run #1: crashed: INFO: rcu detected stall in mntput_no_expire
run #2: crashed: INFO: rcu detected stall in lockref_get
run #3: crashed: INFO: rcu detected stall in security_file_open
run #4: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in sys_futex
run #7: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #8: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #9: crashed: INFO: rcu detected stall in do_idle
representative crash: INFO: rcu detected stall in sys_clone3, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit 38fb82ecd144fa22c5e41cb6e56f1fa8c98d6f61 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 43bfed11beada7333148e40ab88889dd1acc886e39e63db167da0e1ca3af81a3
run #0: crashed: INFO: rcu detected stall in do_idle
run #1: crashed: INFO: rcu detected stall in do_idle
run #2: crashed: INFO: rcu detected stall in process_one_work
run #3: crashed: INFO: rcu detected stall in dput
run #4: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #5: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #6: crashed: INFO: rcu detected stall in do_idle
run #7: crashed: INFO: rcu detected stall in sys_clock_adjtime
run #8: crashed: INFO: rcu detected stall in do_idle
run #9: crashed: INFO: rcu detected stall in dput
representative crash: INFO: rcu detected stall in do_idle, types: [HANG]
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 [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing current HEAD 6741e066ec7633450d3186946035c1f80c4226b8
testing commit 6741e066ec7633450d3186946035c1f80c4226b8 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: bd4c6f575783b92d65cf24c4cd55678775e2a0f8eb2da3580a581b4d9919ff07
run #0: crashed: INFO: rcu detected stall in sync_hw_clock
run #1: crashed: INFO: rcu detected stall in sync_hw_clock
run #2: crashed: INFO: rcu detected stall in sys_inotify_rm_watch
run #3: crashed: INFO: rcu detected stall in do_idle
run #4: crashed: INFO: rcu detected stall in do_idle
run #5: crashed: INFO: rcu detected stall in sys_newfstatat
run #6: crashed: INFO: rcu detected stall in sys_newfstatat
run #7: crashed: INFO: rcu detected stall in smp_call_function
run #8: crashed: INFO: rcu detected stall in do_idle
run #9: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
representative crash: INFO: rcu detected stall in sync_hw_clock, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 1h50m13.636111397s (build: 54m39.605173693s, test: 50m21.83003478s)
crash still not fixed or there were kernel test errors
commit msg: Linux 6.1.87
crash: INFO: rcu detected stall in sync_hw_clock
IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-...D } 2139 jiffies s: 889 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 871 Comm: kworker/0:2 Not tainted 6.1.87-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events_freezable_power_ sync_hw_clock
RIP: 0010:__rcu_read_unlock+0xe/0x20 kernel/rcu/tree_plugin.h:423
Code: ff ff e8 35 52 8a 01 0f 1f 44 00 00 65 48 8b 05 08 25 df 7e ff 80 fc 03 00 00 c3 90 65 48 8b 3d f8 24 df 7e ff 8f fc 03 00 00 <75> 09 83 bf 00 04 00 00 00 75 01 c3 eb 04 0f 1f 40 00 55 41 56 53
RSP: 0018:ffffc90000003eb0 EFLAGS: 00000046
RAX: 063c888e7438e400 RBX: ffffffff823e21cf RCX: ffff8881056a3680
RDX: 0000000080010001 RSI: 0000000000000001 RDI: ffff8881056a3680
RBP: ffff888107f27ae8 R08: ffffffff822ca318 R09: 0000000000000000
R10: 0000000000000000 R11: 000000000006d800 R12: ffff888107f27b40
R13: ffff8881106ffba0 R14: 17cf1d5ae4000000 R15: ffff8881062b6f40
FS:  0000000000000000(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000600 CR3: 0000000106ff0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 advance_sched+0x1de/0x220 net/sched/sch_taprio.c:755
 __run_hrtimer kernel/time/hrtimer.c:1686 [inline]
 __hrtimer_run_queues+0x219/0x570 kernel/time/hrtimer.c:1750
 hrtimer_interrupt+0x124/0x460 kernel/time/hrtimer.c:1812
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
 __sysvec_apic_timer_interrupt+0x87/0x1d0 arch/x86/kernel/apic/apic.c:1112
 sysvec_apic_timer_interrupt+0x87/0xb0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x55/0xa0 kernel/locking/spinlock.c:194
Code: df e8 af 83 70 fe 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 37 41 f7 c6 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> a6 a7 6d fe 65 8b 05 87 62 53 7d 85 c0 74 28 65 48 8b 04 25 28
RSP: 0018:ffffc900025c7d38 EFLAGS: 00000206
RAX: 0000000000000001 RBX: ffffffff838a11c0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff834ff063 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff81fc655f R09: ffffffff81fc64b0
R10: 0000000000000002 R11: ffff8881056a3680 R12: 0000000000000002
R13: 0000000000000026 R14: 0000000000000282 R15: 0000000000000028
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 mc146818_set_time+0x2ce/0x2e0 drivers/rtc/rtc-mc146818-lib.c:307
 rtc_set_time+0x28f/0x420 drivers/rtc/interface.c:158
 update_rtc kernel/time/ntp.c:597 [inline]
 sync_hw_clock+0x1ce/0x2e0 kernel/time/ntp.c:656
 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:308
 </TASK>