ci2 starts bisection 2024-05-28 01:24:52.280314562 +0000 UTC m=+6042.944459982
bisecting fixing commit since c52b9710c83d3b8ab63bb217cc7c8b61e13f12cd
building syzkaller on 36c961ad9dc0e5b72efc784a57717424a02bfa00
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: KASAN: use-after-free Read in try_to_wake_up
run #1: crashed: KASAN: use-after-free Read in try_to_wake_up
run #2: crashed: KASAN: use-after-free Read in try_to_wake_up
run #3: crashed: KASAN: use-after-free Read in try_to_wake_up
run #4: crashed: KASAN: use-after-free Read in try_to_wake_up
run #5: crashed: KASAN: use-after-free Read in try_to_wake_up
run #6: crashed: KASAN: use-after-free Read in try_to_wake_up
run #7: crashed: KASAN: use-after-free Read in try_to_wake_up
run #8: crashed: KASAN: use-after-free Read in try_to_wake_up
run #9: crashed: KASAN: use-after-free Read in try_to_wake_up
run #10: crashed: KASAN: use-after-free Read in try_to_wake_up
run #11: crashed: KASAN: use-after-free Read in try_to_wake_up
run #12: crashed: KASAN: use-after-free Read in try_to_wake_up
run #13: crashed: KASAN: use-after-free Read in try_to_wake_up
run #14: crashed: KASAN: use-after-free Read in try_to_wake_up
run #15: crashed: KASAN: use-after-free Read in try_to_wake_up
run #16: crashed: KASAN: use-after-free Read in try_to_wake_up
run #17: crashed: KASAN: use-after-free Read in try_to_wake_up
run #18: crashed: KASAN: use-after-free Read in try_to_wake_up
run #19: crashed: INFO: task hung in nilfs_detach_log_writer
representative crash: KASAN: use-after-free Read in try_to_wake_up, types: [KASAN]
check whether we can drop unnecessary instrumentation
disabling configs for [HANG LEAK UBSAN BUG 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: 70d89e47fb1a3ae2050a7c9ec49c0c4fe97d496990d176e6338fa6a75af3deaf
run #0: crashed: KASAN: use-after-free Read in try_to_wake_up
run #1: crashed: KASAN: use-after-free Read in try_to_wake_up
run #2: crashed: KASAN: use-after-free Read in try_to_wake_up
run #3: crashed: KASAN: use-after-free Read in try_to_wake_up
run #4: crashed: KASAN: use-after-free Read in try_to_wake_up
run #5: crashed: KASAN: use-after-free Read in try_to_wake_up
run #6: crashed: KASAN: use-after-free Read in try_to_wake_up
run #7: crashed: no output from test machine
run #8: crashed: no output from test machine
run #9: OK
representative crash: KASAN: use-after-free Read in try_to_wake_up, types: [KASAN]
the bug reproduces without the instrumentation
disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], 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 [BUG LOCKDEP ATOMIC_SLEEP HANG 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: d1e0353ef931abba903aaf27c916fbc5c0928cb98bfb39849ddf144520a58a90
run #0: crashed: KASAN: use-after-free Read in try_to_wake_up
run #1: crashed: KASAN: use-after-free Read in try_to_wake_up
run #2: crashed: KASAN: use-after-free Read in try_to_wake_up
run #3: crashed: KASAN: use-after-free Read in try_to_wake_up
run #4: crashed: no output from test machine
run #5: crashed: KASAN: use-after-free Read in try_to_wake_up
run #6: OK
run #7: OK
run #8: OK
run #9: OK
representative crash: KASAN: use-after-free Read in try_to_wake_up, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [HANG LEAK UBSAN BUG 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: 0608b91b41044b5ba5349313e06cb360348e37b198f7fcc4d4f9679ab0f81975
run #0: crashed: KASAN: use-after-free Read in try_to_wake_up
run #1: crashed: KASAN: use-after-free Read in try_to_wake_up
run #2: crashed: KASAN: use-after-free Read in try_to_wake_up
run #3: crashed: KASAN: use-after-free Read in try_to_wake_up
run #4: crashed: KASAN: use-after-free Read in try_to_wake_up
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
representative crash: KASAN: use-after-free Read in try_to_wake_up, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [HANG LEAK UBSAN BUG 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: e3e24485af161502fec9e70c8af724ad00281000d68011a4f8abef374214b607
all runs: OK
false negative chance: 0.000
testing without sub-chunk 4/5
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], 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: 6ddb9cbc4d985dabd19ee565d47044692f9a27dbf3c8df1850c76702a9f39c10
run #0: crashed: KASAN: use-after-free Read in try_to_wake_up
run #1: crashed: KASAN: use-after-free Read in try_to_wake_up
run #2: crashed: KASAN: use-after-free Read in try_to_wake_up
run #3: crashed: KASAN: use-after-free Read in try_to_wake_up
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
representative crash: KASAN: use-after-free Read in try_to_wake_up, types: [KASAN]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [BUG LOCKDEP ATOMIC_SLEEP HANG 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: 2218fb96e43dc299989a68fed7cda5f47b1b85b45996612b203c231deac7ce3e
run #0: crashed: KASAN: use-after-free Read in try_to_wake_up
run #1: crashed: KASAN: use-after-free Read in try_to_wake_up
run #2: crashed: KASAN: use-after-free Read in try_to_wake_up
run #3: crashed: KASAN: use-after-free Read in try_to_wake_up
run #4: crashed: KASAN: use-after-free Read in try_to_wake_up
run #5: crashed: KASAN: use-after-free Read in try_to_wake_up
run #6: crashed: KASAN: use-after-free Read in try_to_wake_up
run #7: crashed: KASAN: use-after-free Read in try_to_wake_up
run #8: crashed: KASAN: use-after-free Read in try_to_wake_up
run #9: crashed: KASAN: use-after-free Read in try_to_wake_up
run #10: crashed: KASAN: use-after-free Read in try_to_wake_up
run #11: crashed: KASAN: use-after-free Read in try_to_wake_up
run #12: OK
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: KASAN: use-after-free Read in try_to_wake_up, types: [KASAN]
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 [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], 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: 2a314d895f926cfe46290bbdfbdd2d033e90c2265f269620aca89c897ffdea51
run #0: crashed: KASAN: use-after-free Read in try_to_wake_up
run #1: crashed: KASAN: use-after-free Read in try_to_wake_up
run #2: crashed: KASAN: use-after-free Read in try_to_wake_up
run #3: crashed: KASAN: use-after-free Read in try_to_wake_up
run #4: crashed: KASAN: use-after-free Read in try_to_wake_up
run #5: crashed: KASAN: use-after-free Read in try_to_wake_up
run #6: crashed: KASAN: use-after-free Read in try_to_wake_up
run #7: crashed: KASAN: use-after-free Read in try_to_wake_up
run #8: crashed: KASAN: use-after-free Read in try_to_wake_up
run #9: crashed: KASAN: use-after-free Read in try_to_wake_up
run #10: crashed: KASAN: use-after-free Read in try_to_wake_up
run #11: crashed: KASAN: use-after-free Read in try_to_wake_up
run #12: OK
run #13: OK
run #14: crashed: KASAN: use-after-free Read in try_to_wake_up
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
representative crash: KASAN: use-after-free Read in try_to_wake_up, types: [KASAN]
crash still not fixed/happens on the oldest tested release
reproducer is flaky (0.60 repro chance estimate)
revisions tested: 8, total time: 2h0m56.385665619s (build: 24m42.843355861s, test: 1h34m42.093794067s)
crash still not fixed or there were kernel test errors
commit msg: Linux 5.15.160
crash: KASAN: use-after-free Read in try_to_wake_up
==================================================================
BUG: KASAN: use-after-free in __lock_acquire.constprop.0+0xabd/0xb30 kernel/locking/lockdep.c:4886
Read of size 8 at addr ffff888118c1a600 by task swapper/1/0
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.15.160-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x8e/0xdd lib/dump_stack.c:106
print_address_description.constprop.0.cold+0x6c/0x309 mm/kasan/report.c:248
__kasan_report mm/kasan/report.c:434 [inline]
kasan_report.cold+0x83/0xdf mm/kasan/report.c:451
__lock_acquire.constprop.0+0xabd/0xb30 kernel/locking/lockdep.c:4886
lock_acquire kernel/locking/lockdep.c:5623 [inline]
lock_acquire+0x11a/0x230 kernel/locking/lockdep.c:5588
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x26/0x40 kernel/locking/spinlock.c:162
try_to_wake_up+0x8c/0xfd0 kernel/sched/core.c:4030
call_timer_fn+0x184/0x400 kernel/time/timer.c:1451
expire_timers kernel/time/timer.c:1496 [inline]
__run_timers.part.0+0x549/0x870 kernel/time/timer.c:1767
__run_timers kernel/time/timer.c:1745 [inline]
run_timer_softirq+0x80/0x120 kernel/time/timer.c:1780
__do_softirq+0x14a/0x59a kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu kernel/softirq.c:637 [inline]
irq_exit_rcu+0xce/0x110 kernel/softirq.c:649
sysvec_apic_timer_interrupt+0x6f/0x90 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:40 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:75 [inline]
RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:110 [inline]
RIP: 0010:acpi_idle_do_entry+0x1f4/0x270 drivers/acpi/processor_idle.c:570
Code: eb 03 83 e3 01 89 de e8 7a c7 c7 fc 84 db 75 b0 e8 b1 ce c7 fc 66 90 e8 aa ce c7 fc 0f 00 2d e3 27 78 00 e8 9e ce c7 fc fb f4 eb 93 e8 94 ce c7 fc 48 89 ef e8 ac f4 ff ff 5b 5d e9 85 ce c7
RSP: 0018:ffffc900000efd18 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff84958766
RDX: ffff8881002d9c40 RSI: ffffffff84958782 RDI: 0000000000000001
RBP: ffff8881069f4864 R08: 0000000000000000 R09: ffff8881002d9c47
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
R13: ffff8881069f4800 R14: ffff8881069f4864 R15: ffff8881047f7804
acpi_idle_enter+0x33f/0x4a0 drivers/acpi/processor_idle.c:705
cpuidle_enter_state+0x1b4/0xcd0 drivers/cpuidle/cpuidle.c:237
cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:351
call_cpuidle kernel/sched/idle.c:158 [inline]
cpuidle_idle_call kernel/sched/idle.c:239 [inline]
do_idle+0x381/0x500 kernel/sched/idle.c:306
cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403
start_secondary+0x20d/0x2b0 arch/x86/kernel/smpboot.c:281
secondary_startup_64_no_verify+0xb0/0xbb
Allocated by task 2:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
__kasan_slab_alloc+0x61/0x80 mm/kasan/common.c:467
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook mm/slab.h:519 [inline]
slab_alloc_node mm/slub.c:3220 [inline]
kmem_cache_alloc_node+0x22b/0x340 mm/slub.c:3256
alloc_task_struct_node kernel/fork.c:171 [inline]
dup_task_struct kernel/fork.c:894 [inline]
copy_process+0x5d2/0x7d20 kernel/fork.c:2038
kernel_clone+0xe7/0xbd0 kernel/fork.c:2604
kernel_thread+0xb5/0xf0 kernel/fork.c:2656
create_kthread kernel/kthread.c:357 [inline]
kthreadd+0x469/0x680 kernel/kthread.c:701
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
Freed by task 0:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
kasan_set_track+0x1c/0x30 mm/kasan/common.c:46
kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:360
____kasan_slab_free mm/kasan/common.c:366 [inline]
____kasan_slab_free mm/kasan/common.c:328 [inline]
__kasan_slab_free+0xe0/0x110 mm/kasan/common.c:374
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:1705 [inline]
slab_free_freelist_hook mm/slub.c:1731 [inline]
slab_free mm/slub.c:3499 [inline]
kmem_cache_free+0x7e/0x450 mm/slub.c:3515
__put_task_struct+0x1e0/0x340 kernel/fork.c:763
put_task_struct include/linux/sched/task.h:141 [inline]
delayed_put_task_struct+0x192/0x1f0 kernel/exit.c:220
rcu_do_batch kernel/rcu/tree.c:2523 [inline]
rcu_core+0x58c/0x1190 kernel/rcu/tree.c:2763
__do_softirq+0x14a/0x59a kernel/softirq.c:558
Last potentially related work creation:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
kasan_record_aux_stack+0xc5/0xf0 mm/kasan/generic.c:348
__call_rcu kernel/rcu/tree.c:3007 [inline]
call_rcu+0x98/0x6d0 kernel/rcu/tree.c:3087
put_task_struct_rcu_user+0x7f/0xb0 kernel/exit.c:226
context_switch kernel/sched/core.c:5033 [inline]
__schedule+0x895/0x1d80 kernel/sched/core.c:6376
preempt_schedule_common kernel/sched/core.c:6552 [inline]
__cond_resched+0x3e/0x70 kernel/sched/core.c:8252
_cond_resched include/linux/sched.h:2036 [inline]
gc_worker+0xa28/0x1470 net/netfilter/nf_conntrack_core.c:1544
process_one_work+0x8d5/0x1260 kernel/workqueue.c:2310
worker_thread+0x552/0xf40 kernel/workqueue.c:2457
kthread+0x327/0x3e0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
Second to last potentially related work creation:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
kasan_record_aux_stack+0xc5/0xf0 mm/kasan/generic.c:348
__call_rcu kernel/rcu/tree.c:3007 [inline]
call_rcu+0x98/0x6d0 kernel/rcu/tree.c:3087
put_task_struct_rcu_user+0x7f/0xb0 kernel/exit.c:226
release_task+0xc10/0x14a0 kernel/exit.c:272
wait_task_zombie kernel/exit.c:1179 [inline]
wait_consider_task+0x2ae5/0x33c0 kernel/exit.c:1406
do_wait_pid kernel/exit.c:1537 [inline]
do_wait+0x5b8/0xb00 kernel/exit.c:1579
kernel_wait+0x9c/0x150 kernel/exit.c:1766
call_usermodehelper_exec_sync kernel/umh.c:139 [inline]
call_usermodehelper_exec_work+0xf5/0x180 kernel/umh.c:166
process_one_work+0x8d5/0x1260 kernel/workqueue.c:2310
worker_thread+0x552/0xf40 kernel/workqueue.c:2457
kthread+0x327/0x3e0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
The buggy address belongs to the object at ffff888118c19c40
which belongs to the cache task_struct of size 6976
The buggy address is located 2496 bytes inside of
6976-byte region [ffff888118c19c40, ffff888118c1b780)
The buggy address belongs to the page:
page:ffffea0004630600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x118c18
head:ffffea0004630600 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x200000000010200(slab|head|node=0|zone=2)
raw: 0200000000010200 0000000000000000 0000000100000001 ffff8881001903c0
raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 9, ts 44953836694, free_ts 44936699509
prep_new_page mm/page_alloc.c:2426 [inline]
get_page_from_freelist+0x165a/0x2900 mm/page_alloc.c:4159
__alloc_pages+0x2b3/0x590 mm/page_alloc.c:5423
alloc_pages+0x16f/0x3d0 mm/mempolicy.c:2185
alloc_slab_page mm/slub.c:1775 [inline]
allocate_slab+0x2eb/0x430 mm/slub.c:1912
new_slab mm/slub.c:1975 [inline]
___slab_alloc+0xb1c/0xf80 mm/slub.c:3008
__slab_alloc mm/slub.c:3095 [inline]
slab_alloc_node mm/slub.c:3186 [inline]
kmem_cache_alloc_node+0x2e3/0x340 mm/slub.c:3256
alloc_task_struct_node kernel/fork.c:171 [inline]
dup_task_struct kernel/fork.c:894 [inline]
copy_process+0x5d2/0x7d20 kernel/fork.c:2038
kernel_clone+0xe7/0xbd0 kernel/fork.c:2604
kernel_thread+0xb5/0xf0 kernel/fork.c:2656
call_usermodehelper_exec_sync kernel/umh.c:135 [inline]
call_usermodehelper_exec_work+0x69/0x180 kernel/umh.c:166
process_one_work+0x8d5/0x1260 kernel/workqueue.c:2310
worker_thread+0x552/0xf40 kernel/workqueue.c:2457
kthread+0x327/0x3e0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1340 [inline]
free_pcp_prepare+0x34e/0x730 mm/page_alloc.c:1391
free_unref_page_prepare mm/page_alloc.c:3317 [inline]
free_unref_page+0x19/0x4b0 mm/page_alloc.c:3396
__unfreeze_partials+0x27d/0x2a0 mm/slub.c:2507
qlink_free mm/kasan/quarantine.c:157 [inline]
qlist_free_all+0x68/0x110 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x180/0x1f0 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0x73/0x80 mm/kasan/common.c:444
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook mm/slab.h:519 [inline]
slab_alloc_node mm/slub.c:3220 [inline]
slab_alloc mm/slub.c:3228 [inline]
kmem_cache_alloc+0x211/0x310 mm/slub.c:3233
vm_area_alloc+0x1c/0x110 kernel/fork.c:349
mmap_region+0x81a/0x1350 mm/mmap.c:1771
do_mmap+0x869/0xfc0 mm/mmap.c:1575
vm_mmap_pgoff+0x1b7/0x280 mm/util.c:551
ksys_mmap_pgoff+0x417/0x560 mm/mmap.c:1624
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
Memory state around the buggy address:
ffff888118c1a500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888118c1a580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888118c1a600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888118c1a680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888118c1a700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: eb 03 jmp 0x5
2: 83 e3 01 and $0x1,%ebx
5: 89 de mov %ebx,%esi
7: e8 7a c7 c7 fc call 0xfcc7c786
c: 84 db test %bl,%bl
e: 75 b0 jne 0xffffffc0
10: e8 b1 ce c7 fc call 0xfcc7cec6
15: 66 90 xchg %ax,%ax
17: e8 aa ce c7 fc call 0xfcc7cec6
1c: 0f 00 2d e3 27 78 00 verw 0x7827e3(%rip) # 0x782806
23: e8 9e ce c7 fc call 0xfcc7cec6
28: fb sti
29: f4 hlt
* 2a: fa cli <-- trapping instruction
2b: eb 93 jmp 0xffffffc0
2d: e8 94 ce c7 fc call 0xfcc7cec6
32: 48 89 ef mov %rbp,%rdi
35: e8 ac f4 ff ff call 0xfffff4e6
3a: 5b pop %rbx
3b: 5d pop %rbp
3c: e9 .byte 0xe9
3d: 85 ce test %ecx,%esi
3f: c7 .byte 0xc7