ci2 starts bisection 2024-06-03 14:27:13.440710652 +0000 UTC m=+21353.076449172
bisecting fixing commit since c52b9710c83d3b8ab63bb217cc7c8b61e13f12cd
building syzkaller on af24b0505c748561efb50f1d03c824d6642f6c0b
ensuring issue is reproducible on original commit c52b9710c83d3b8ab63bb217cc7c8b61e13f12cd
testing commit c52b9710c83d3b8ab63bb217cc7c8b61e13f12cd gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 8f9533dbb5b283a8f9556486e465585032d540e4cea9bf9c9fb0fd0ec4562ad7
run #0: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #1: crashed: INFO: rcu detected stall in security_file_open
run #2: crashed: INFO: rcu detected stall in tcp_setsockopt
run #3: crashed: INFO: rcu detected stall in sys_execve
run #4: crashed: INFO: rcu detected stall in do_idle
run #5: crashed: INFO: rcu detected stall in security_file_free
run #6: crashed: INFO: rcu detected stall in batadv_nc_worker
run #7: crashed: INFO: rcu detected stall in sys_close
run #8: crashed: INFO: rcu detected stall in corrupted
run #9: crashed: INFO: rcu detected stall in corrupted
run #10: crashed: INFO: rcu detected stall in wb_workfn
run #11: crashed: INFO: rcu detected stall in corrupted
run #12: crashed: INFO: rcu detected stall in sys_execve
run #13: crashed: INFO: rcu detected stall in shmem_file_read_iter
run #14: crashed: INFO: rcu detected stall in gc_worker
run #15: crashed: INFO: rcu detected stall in process_one_work
run #16: crashed: INFO: rcu detected stall in gc_worker
run #17: crashed: INFO: rcu detected stall in sys_pipe2
run #18: crashed: INFO: rcu detected stall in __do_softirq
run #19: crashed: INFO: rcu detected stall in sys_epoll_wait
representative crash: INFO: rcu detected stall in syscall_exit_to_user_mode, 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 c52b9710c83d3b8ab63bb217cc7c8b61e13f12cd gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: adce4f5f02c3a972aa408de1dc507cf66e63c6da47c7f74f56b3da493d839a19
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in sys_exit_group
run #2: crashed: INFO: rcu detected stall in sys_mkdirat
run #3: crashed: INFO: rcu detected stall in kernfs_fop_read_iter
run #4: crashed: INFO: rcu detected stall in sys_exit_group
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #7: crashed: INFO: rcu detected stall in sys_symlink
run #8: crashed: INFO: rcu detected stall in sys_exit_group
run #9: crashed: INFO: rcu detected stall in sys_openat
representative crash: INFO: rcu detected stall in corrupted, 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=3703 full=7267 leaves diff=1981
split chunks (needed=false): <1981>
split chunk #0 of len 1981 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit c52b9710c83d3b8ab63bb217cc7c8b61e13f12cd gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: fca526678a0c5d13d1cfc15cfc4a269a393d59041e303bd73fd4293e3d3ce39b
run #0: crashed: INFO: rcu detected stall in sys_readlink
run #1: crashed: INFO: rcu detected stall in do_idle
run #2: crashed: INFO: rcu detected stall in sys_openat
run #3: crashed: INFO: rcu detected stall in sys_umount
run #4: crashed: INFO: rcu detected stall in sys_unlink
run #5: crashed: INFO: rcu detected stall in newfstatat
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in sys_exit_group
run #8: crashed: INFO: rcu detected stall in wg_ratelimiter_gc_entries
run #9: crashed: INFO: rcu detected stall in do_idle
representative crash: INFO: rcu detected stall in sys_readlink, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit c52b9710c83d3b8ab63bb217cc7c8b61e13f12cd gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: e76e63f360625d4b6ffbb6f5876579bc78d100e1837fc40c7580752e3d6cf06d
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in newfstatat
run #2: crashed: INFO: rcu detected stall in security_file_open
run #3: crashed: INFO: rcu detected stall in try_check_zero
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in do_idle
run #7: crashed: INFO: rcu detected stall in newfstatat
run #8: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #9: crashed: INFO: rcu detected stall in sys_execve
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit c52b9710c83d3b8ab63bb217cc7c8b61e13f12cd gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: eb7b0bef70f752ea2ffbbcbd9c9b9b590ad55382aa586b3ac2c712badcb96ed4
all runs: OK
false negative chance: 0.000
testing without sub-chunk 4/5
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit c52b9710c83d3b8ab63bb217cc7c8b61e13f12cd gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 7aebc87fe856cdf163af86eff7962594afc4311b816fea92acb4b5c0941fc004
run #0: crashed: INFO: rcu detected stall in __do_munmap
run #1: crashed: INFO: rcu detected stall in corrupted
run #2: crashed: INFO: rcu detected stall in sys_socket
run #3: crashed: INFO: rcu detected stall in bpf_prog_free_deferred
run #4: crashed: INFO: rcu detected stall in clone
run #5: crashed: INFO: rcu detected stall in do_idle
run #6: crashed: INFO: rcu detected stall in newfstatat
run #7: crashed: INFO: rcu detected stall in sys_readlink
run #8: crashed: INFO: rcu detected stall in do_idle
run #9: crashed: INFO: rcu detected stall in sys_execve
representative crash: INFO: rcu detected stall in __do_munmap, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG KASAN], they are not needed
testing commit c52b9710c83d3b8ab63bb217cc7c8b61e13f12cd gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 284343c5ded980833f7d94710ebbfb0ec5dbcd47495b154a576e491500a140dd
run #0: crashed: INFO: rcu detected stall in free_work
run #1: crashed: INFO: rcu detected stall in do_idle
run #2: crashed: INFO: rcu detected stall in clone
run #3: crashed: INFO: rcu detected stall in clone
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in sys_openat
run #7: crashed: INFO: rcu detected stall in newfstatat
run #8: crashed: INFO: rcu detected stall in do_idle
run #9: crashed: INFO: rcu detected stall in clone
representative crash: INFO: rcu detected stall in free_work, types: [HANG]
the chunk can be dropped
minimized to 397 configs; suspects: [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 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_INTEL 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 LIBNVDIMM LINEAR_RANGES LLC LLC2 LOGIG940_FF LOGIRUMBLEPAD2_FF LOGO LOGO_LINUX_MONO LOGO_LINUX_VGA16 LPC_ICH 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 MEDIA_TUNER_XC2028 MEDIA_TUNER_XC5000 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 MITIGATION_RFDS MITIGATION_SPECTRE_BHI 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_BLK 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 NETFS_SUPPORT 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_CGROUP 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_EGRESS 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_CAKE NET_SCH_CBS NET_SCH_CHOKE NET_SCH_CODEL NET_SCH_DRR 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_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_COUNTER 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_OBJREF 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_FLOW_TABLE_IPV4 NF_FLOW_TABLE_IPV6 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 NILFS2_FS NLMON NLS_CODEPAGE_1250 NLS_CODEPAGE_1251 NLS_CODEPAGE_737 NLS_CODEPAGE_775 NLS_CODEPAGE_850 NLS_CODEPAGE_852 PARTITION_ADVANCED PSAMPLE RFKILL SPI USB_GADGET USB_MUSB_HDRC VIDEO_DEV VIDEO_V4L2 WAN WATCH_QUEUE WIRELESS WLAN WWAN X25 X86_X32]
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing current HEAD c61bd26ae81a896c8660150b4e356153da30880a
testing commit c61bd26ae81a896c8660150b4e356153da30880a gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6198b9831c650ebd1ac3439677bf8a4eb4e0b8e05283aa9deace99f1b70ded36
run #0: crashed: INFO: rcu detected stall in newfstatat
run #1: crashed: INFO: rcu detected stall in smp_call_function
run #2: crashed: INFO: rcu detected stall in nsim_dev_trap_report_work
run #3: crashed: INFO: rcu detected stall in sys_symlinkat
run #4: crashed: INFO: rcu detected stall in newfstatat
run #5: crashed: INFO: rcu detected stall in corrupted
run #6: crashed: INFO: rcu detected stall in do_idle
run #7: crashed: INFO: rcu detected stall in sys_getsockopt
run #8: crashed: INFO: rcu detected stall in sys_openat
run #9: crashed: INFO: rcu detected stall in sys_getdents64
representative crash: INFO: rcu detected stall in newfstatat, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 1h11m41.394206474s (build: 27m11.383554876s, test: 42m55.277813817s)
crash still not fixed or there were kernel test errors
commit msg: Linux 5.15.160
crash: INFO: rcu detected stall in newfstatat
rcu: INFO: rcu_sched detected stalls on CPUs/tasks:
rcu: 1-...!: (1 ticks this GP) idle=673/1/0x4000000000000000 softirq=4176/4176 fqs=0
(detected by 0, t=10004 jiffies, g=1869, q=385)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1999 Comm: syz-executor.0 Not tainted 5.15.160-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:arch_atomic_try_cmpxchg arch/x86/include/asm/atomic.h:202 [inline]
RIP: 0010:atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:513 [inline]
RIP: 0010:queued_spin_lock include/asm-generic/qspinlock.h:82 [inline]
RIP: 0010:do_raw_spin_lock+0x3a/0xa0 kernel/locking/spinlock_debug.c:115
Code: 55 10 65 48 8b 04 25 80 af 01 00 48 39 c2 74 43 8b 55 08 65 8b 05 c6 38 e3 7e 39 c2 74 46 31 c0 ba 01 00 00 00 f0 0f b1 55 00 <75> 49 65 8b 05 ad 38 e3 7e 89 45 08 65 48 8b 04 25 80 af 01 00 48
RSP: 0018:ffffc900000b8ea8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff88810a3edf40 RCX: 00000000fe718bf5
RDX: 0000000000000001 RSI: 00000000c3afb8ed RDI: ffff88810a3edee8
RBP: ffff88810a3edee8 R08: 000000000008062c R09: 0000000000000000
R10: 0000000000080000 R11: 0000000000001ae6 R12: ffffffff8221fc10
R13: ffff888237d1dd80 R14: ffff888237d1dd80 R15: 0000000037d1e901
FS: 0000555555cc3480(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555ccc818 CR3: 0000000110297000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
spin_lock include/linux/spinlock.h:363 [inline]
advance_sched+0x30/0x250 net/sched/sch_taprio.c:716
__run_hrtimer kernel/time/hrtimer.c:1686 [inline]
__hrtimer_run_queues+0x1db/0x4a0 kernel/time/hrtimer.c:1750
hrtimer_interrupt+0x124/0x2a0 kernel/time/hrtimer.c:1812
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x63/0x100 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x6d/0x90 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:security_inode_getattr+0x19/0x80 security/security.c:1346
Code: 5b 5d 41 5c 41 5d c3 66 2e 0f 1f 84 00 00 00 00 00 41 54 55 48 89 fd 53 e8 34 11 a7 ff 48 8b 45 08 31 ff 48 8b 40 68 8b 58 0c <81> e3 00 02 00 00 89 de e8 1a 0a a7 ff 85 db 75 3a e8 11 11 a7 ff
RSP: 0018:ffffc9000142be08 EFLAGS: 00000246
RAX: ffff88810da73158 RBX: 0000000000000000 RCX: ffffffff81435228
RDX: ffff8881057951c0 RSI: ffffffff8182117c RDI: 0000000000000000
RBP: ffffc9000142be30 R08: 0000000000000078 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 00000000ffffff9c R14: 00007ffe509ccf10 R15: 0000000000000900
vfs_getattr fs/stat.c:157 [inline]
vfs_statx+0xf0/0x1f0 fs/stat.c:225
vfs_fstatat fs/stat.c:243 [inline]
__do_sys_newfstatat+0x47/0xb0 fs/stat.c:411
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x33/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f952dd7594a
Code: 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 0b 00 00 00 66 2e 0f 1f 84 00 00 00 00 00 90 41 89 ca b8 06 01 00 00 0f 05 <3d> 00 f0 ff ff 77 07 31 c0 c3 0f 1f 40 00 48 c7 c2 b0 ff ff ff f7
RSP: 002b:00007ffe509cce58 EFLAGS: 00000286 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f952dd7594a
RDX: 00007ffe509cce80 RSI: 00007ffe509ccf10 RDI: 00000000ffffff9c
RBP: 00007ffe509ccf10 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000286 R12: 00007ffe509cdfd0
R13: 00007f952ddc23b9 R14: 000000000000b03a R15: 0000000000000004
rcu: rcu_sched kthread timer wakeup didn't happen for 10003 jiffies! g1869 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=2246
rcu: rcu_sched kthread starved for 10004 jiffies! g1869 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
rcu: Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_sched state:I stack:14328 pid: 12 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x2c8/0x7d0 kernel/sched/core.c:6376
schedule+0x53/0x90 kernel/sched/core.c:6459
schedule_timeout+0xde/0x170 kernel/time/timer.c:1914
rcu_gp_fqs_loop+0xe2/0x320 kernel/rcu/tree.c:1972
rcu_gp_kthread+0x77/0xe0 kernel/rcu/tree.c:2145
kthread+0x13a/0x160 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1999 Comm: syz-executor.0 Not tainted 5.15.160-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:331 [inline]
RIP: 0010:rcu_is_watching+0x0/0x20 kernel/rcu/tree.c:1123
Code: 02 c3 0f 1f 84 00 00 00 00 00 85 ff 75 13 0f bf 05 95 73 59 02 89 06 48 8b 05 24 73 59 02 48 89 02 c3 0f 1f 84 00 00 00 00 00 <48> c7 c0 08 c6 02 00 65 48 03 05 39 99 e0 7e 8b 00 83 e0 01 c3 66
RSP: 0018:ffffc900000b8e70 EFLAGS: 00000047
RAX: 0000000000000001 RBX: ffff88810a3edf40 RCX: ffffffff820fbb71
RDX: ffff8881057951c0 RSI: ffffffff8221fd4d RDI: ffffffff837a26c0
RBP: ffffffff837a26c0 R08: 00000000000a0015 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000001ae6 R12: ffff88810b672a80
R13: ffffffff8221fd4d R14: 0000000aa5bd87b6 R15: 0000000004000000
FS: 0000555555cc3480(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555ccc818 CR3: 0000000110297000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0x1b1/0x220 kernel/locking/lockdep.c:5634
rcu_lock_release include/linux/rcupdate.h:317 [inline]
rcu_read_unlock include/linux/rcupdate.h:772 [inline]
advance_sched+0x1a5/0x250 net/sched/sch_taprio.c:771
__run_hrtimer kernel/time/hrtimer.c:1686 [inline]
__hrtimer_run_queues+0x1db/0x4a0 kernel/time/hrtimer.c:1750
hrtimer_interrupt+0x124/0x2a0 kernel/time/hrtimer.c:1812
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x63/0x100 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x6d/0x90 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:security_inode_getattr+0x19/0x80 security/security.c:1346
Code: 5b 5d 41 5c 41 5d c3 66 2e 0f 1f 84 00 00 00 00 00 41 54 55 48 89 fd 53 e8 34 11 a7 ff 48 8b 45 08 31 ff 48 8b 40 68 8b 58 0c <81> e3 00 02 00 00 89 de e8 1a 0a a7 ff 85 db 75 3a e8 11 11 a7 ff
RSP: 0018:ffffc9000142be08 EFLAGS: 00000246
RAX: ffff88810da73158 RBX: 0000000000000000 RCX: ffffffff81435228
RDX: ffff8881057951c0 RSI: ffffffff8182117c RDI: 0000000000000000
RBP: ffffc9000142be30 R08: 0000000000000078 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 00000000ffffff9c R14: 00007ffe509ccf10 R15: 0000000000000900
vfs_getattr fs/stat.c:157 [inline]
vfs_statx+0xf0/0x1f0 fs/stat.c:225
vfs_fstatat fs/stat.c:243 [inline]
__do_sys_newfstatat+0x47/0xb0 fs/stat.c:411
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x33/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f952dd7594a
Code: 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 0b 00 00 00 66 2e 0f 1f 84 00 00 00 00 00 90 41 89 ca b8 06 01 00 00 0f 05 <3d> 00 f0 ff ff 77 07 31 c0 c3 0f 1f 40 00 48 c7 c2 b0 ff ff ff f7
RSP: 002b:00007ffe509cce58 EFLAGS: 00000286 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f952dd7594a
RDX: 00007ffe509cce80 RSI: 00007ffe509ccf10 RDI: 00000000ffffff9c
RBP: 00007ffe509ccf10 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000286 R12: 00007ffe509cdfd0
R13: 00007f952ddc23b9 R14: 000000000000b03a R15: 0000000000000004