ci2 starts bisection 2024-05-09 04:04:02.219193634 +0000 UTC m=+46075.921095496
bisecting fixing commit since 347385861c50adc8d4801d4b899eded38a2f04cd
building syzkaller on 51c4dcff83b0574620c280cc5130ef59cc4a2e32
ensuring issue is reproducible on original commit 347385861c50adc8d4801d4b899eded38a2f04cd

testing commit 347385861c50adc8d4801d4b899eded38a2f04cd gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: ec335aea1cacc36dfebfe8804a126021c02c1f78b72a8017e54e7269251c6987
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in do_idle
run #2: crashed: INFO: rcu detected stall in corrupted
run #3: crashed: INFO: rcu detected stall in dput
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in sock_close
run #6: crashed: INFO: rcu detected stall in sys_clock_settime
run #7: crashed: INFO: rcu detected stall in sys_execve
run #8: crashed: INFO: rcu detected stall in sys_clock_settime
run #9: crashed: INFO: rcu detected stall in sys_openat
run #10: crashed: INFO: rcu detected stall in syscall_enter_from_user_mode
run #11: crashed: INFO: rcu detected stall in sys_clock_settime
run #12: crashed: INFO: rcu detected stall in schedule_timeout
run #13: crashed: INFO: rcu detected stall in dput
run #14: crashed: INFO: rcu detected stall in corrupted
run #15: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #16: crashed: INFO: rcu detected stall in sys_clock_settime
run #17: crashed: INFO: rcu detected stall in sys_clock_settime
run #18: crashed: INFO: rcu detected stall in do_idle
run #19: crashed: INFO: rcu detected stall in sys_clock_settime
representative crash: INFO: rcu detected stall in corrupted, 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 347385861c50adc8d4801d4b899eded38a2f04cd gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b3b37704f384383fa3574db4f035c1b33dace55cb076e32db87c1eb953240cd8
run #0: crashed: INFO: rcu detected stall in corrupted
run #1: crashed: INFO: rcu detected stall in sys_futex
run #2: crashed: INFO: rcu detected stall in do_idle
run #3: crashed: INFO: rcu detected stall in do_idle
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 syscall_exit_to_user_mode
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in process_one_work
run #9: crashed: INFO: rcu detected stall in corrupted
representative crash: INFO: rcu detected stall in corrupted, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
kconfig minimization: base=3820 full=7454 leaves diff=1989
split chunks (needed=false): <1989>
split chunk #0 of len 1989 into 5 parts
testing without sub-chunk 1/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
testing commit 347385861c50adc8d4801d4b899eded38a2f04cd gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: faba58a666ab280425f539a0a458eadd373fbdd2f0c1000472827919f8b00765
run #0: crashed: INFO: rcu detected stall in sys_exit_group
run #1: crashed: INFO: rcu detected stall in process_one_work
run #2: crashed: INFO: rcu detected stall in sys_execve
run #3: crashed: INFO: rcu detected stall in do_mas_munmap
run #4: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #5: crashed: INFO: rcu detected stall in sys_openat
run #6: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #7: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #8: crashed: INFO: rcu detected stall in sys_clone
run #9: crashed: INFO: rcu detected stall in corrupted
representative crash: INFO: rcu detected stall in sys_exit_group, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 347385861c50adc8d4801d4b899eded38a2f04cd gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 87b0757bc4ff587192719448da042102c061bf1c14f4971c10a32e3a2c699f10
run #0: crashed: INFO: rcu detected stall in wb_workfn
run #1: crashed: INFO: rcu detected stall in sys_recvmsg
run #2: crashed: INFO: rcu detected stall in do_idle
run #3: crashed: INFO: rcu detected stall in corrupted
run #4: crashed: INFO: rcu detected stall in sock_close
run #5: crashed: INFO: rcu detected stall in process_one_work
run #6: crashed: INFO: rcu detected stall in corrupted
run #7: crashed: INFO: rcu detected stall in corrupted
run #8: crashed: INFO: rcu detected stall in sys_execve
run #9: crashed: INFO: rcu detected stall in do_idle
representative crash: INFO: rcu detected stall in wb_workfn, types: [HANG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit 347385861c50adc8d4801d4b899eded38a2f04cd gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6b1c36fb1a0685ab970e8bbb11a286066738339b17ef09bb88b754c03d541f99
all runs: OK
false negative chance: 0.000
testing without sub-chunk 4/5
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
testing commit 347385861c50adc8d4801d4b899eded38a2f04cd gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 6aaa344ab028b3fb76681819dbb7b4e52bd77e900f299a4f6e2affb15199e58b
run #0: crashed: INFO: rcu detected stall in sys_umount
run #1: crashed: INFO: rcu detected stall in do_idle
run #2: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #3: crashed: INFO: rcu detected stall in do_idle
run #4: crashed: INFO: rcu detected stall in corrupted
run #5: crashed: INFO: rcu detected stall in sys_newfstatat
run #6: crashed: INFO: rcu detected stall in do_idle
run #7: crashed: INFO: rcu detected stall in sys_newfstatat
run #8: crashed: INFO: rcu detected stall in sys_exit_group
run #9: crashed: INFO: rcu detected stall in corrupted
representative crash: INFO: rcu detected stall in sys_umount, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
testing commit 347385861c50adc8d4801d4b899eded38a2f04cd gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 0ca8957ba4e463879ebece0c5ee42a696e3e4cd30abd4a05af2eb93a8cf312aa
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 do_idle
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 do_idle
run #6: crashed: INFO: rcu detected stall in security_file_open
run #7: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #8: crashed: INFO: rcu detected stall in do_idle
run #9: crashed: INFO: rcu detected stall in do_idle
representative crash: INFO: rcu detected stall in do_idle, types: [HANG]
the chunk can be dropped
minimized to 398 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 IP_VS_PROTO_AH IP_VS_PROTO_AH_ESP 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 MITIGATION_RFDS 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_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_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 [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
testing current HEAD 909ba1f1b4146de529469910c1bd0b1248964536
testing commit 909ba1f1b4146de529469910c1bd0b1248964536 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: ee58773c7745df89e028c3f2d98988796cb08a1fd53f766fb5a8930e60383d57
run #0: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #1: crashed: INFO: rcu detected stall in do_idle
run #2: crashed: INFO: rcu detected stall in do_idle
run #3: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #4: crashed: INFO: rcu detected stall in do_idle
run #5: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
run #6: crashed: INFO: rcu detected stall in sock_close
run #7: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode
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 syscall_exit_to_user_mode, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 1h32m16.629278s (build: 38m43.335269473s, test: 50m48.472939873s)
crash still not fixed or there were kernel test errors
commit msg: Linux 6.1.90
crash: INFO: rcu detected stall in syscall_exit_to_user_mode
IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2140 jiffies s: 889 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2820 Comm: syz-executor.0 Not tainted 6.1.90-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:__lock_acquire+0x2fb/0x4a0 kernel/locking/lockdep.c:5052
Code: 00 48 8b 1c 24 41 8b 46 20 25 ff 1f 00 00 48 0f a3 05 09 d7 73 03 72 12 83 3d 80 1f e6 03 00 75 09 e8 99 3e 81 00 48 8b 1c 24 <48> 89 ab f8 09 00 00 8b 83 00 0a 00 00 ff c0 89 83 00 0a 00 00 83
RSP: 0018:ffffc900000c8df0 EFLAGS: 00000007
RAX: 000000000000002b RBX: ffff88810933b680 RCX: 000000001c1cc6af
RDX: 00000000d4230a46 RSI: 00000000e1650375 RDI: 0000000000000001
RBP: ff276f2f1c1cc6af R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: ffffc900000c8ff8 R12: 0000000000000005
R13: 0000000000000000 R14: ffff88810933c0b0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc798540ccb CR3: 000000000383a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire+0xd2/0x1f0 kernel/locking/lockdep.c:5662
 rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 rcu_read_lock include/linux/rcupdate.h:791 [inline]
 advance_sched+0x1cb/0x220 net/sched/sch_taprio.c:753
 __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:mod_objcg_state+0x28a/0x330 mm/memcontrol.c:3215
Code: 44 24 20 00 02 00 00 75 1d 4d 85 ff 75 1e eb 61 31 db e9 33 ff ff ff e8 d4 a6 60 01 f7 44 24 20 00 02 00 00 74 e3 fb 4d 85 ff <74> 45 e8 3f e4 d6 ff 48 c7 c7 10 8a 9a 83 31 f6 31 d2 b9 02 00 00
RSP: 0018:ffffc900019df9c0 EFLAGS: 00000246
RAX: 94f55663f1076300 RBX: ffff888237d28220 RCX: 0000000000000200
RDX: 0000000000000200 RSI: ffffffff834fd553 RDI: ffffffff83549695
RBP: 0000000000000006 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: ffff88810933b680 R12: ffffffff814ba30b
R13: ffff888237d28220 R14: ffff888107faca40 R15: 0000000000000000
 memcg_slab_free_hook mm/slab.h:570 [inline]
 slab_free mm/slub.c:3656 [inline]
 kmem_cache_free+0x18a/0x4f0 mm/slub.c:3683
 anon_vma_free mm/rmap.c:136 [inline]
 __put_anon_vma+0x7a/0x140 mm/rmap.c:2375
 put_anon_vma include/linux/rmap.h:116 [inline]
 unlink_anon_vmas+0x1c2/0x250 mm/rmap.c:443
 free_pgtables+0xa1/0x210 mm/memory.c:416
 exit_mmap+0x2bd/0x5e0 mm/mmap.c:3237
 __mmput+0x72/0x1a0 kernel/fork.c:1199
 exit_mm+0xcc/0x160 kernel/exit.c:563
 do_exit+0x37a/0x1060 kernel/exit.c:856
 do_group_exit+0xa6/0xe0 kernel/exit.c:1019
 get_signal+0xd5d/0xec0 kernel/signal.c:2862
 arch_do_signal_or_restart+0x8c/0x7c0 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x65/0xe0 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0x6c/0xc0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x27/0x1b0 kernel/entry/common.c:303
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc7984cbde9
Code: Unable to access opcode bytes at 0x7fc7984cbdbf.
RSP: 002b:00007fc79804d178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fc7985f9f88 RCX: 00007fc7984cbde9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fc7985f9f88
RBP: 00007fc7985f9f80 R08: 00007fc79804d6c0 R09: 00007fc79804d6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc7985f9f8c
R13: 0000000000000006 R14: 00007ffd16a7dc10 R15: 00007ffd16a7dcf8
 </TASK>