ci2 starts bisection 2025-01-16 02:01:31.954763355 +0000 UTC m=+28934.009053268
bisecting fixing commit since e4d90d63d385228b1e0bcf31cc15539bbbc28f7f
building syzkaller on b50eb251af3b122fb1b2c574dde0c3d16f6a8cfd
ensuring issue is reproducible on original commit e4d90d63d385228b1e0bcf31cc15539bbbc28f7f

testing commit e4d90d63d385228b1e0bcf31cc15539bbbc28f7f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: c3ae72f391c4e0b7038e28c6aab9b701f7b2c1aeb2b054b42c0b0bb4fa958bca
run #0: infra problem: create instance operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc001a18960] Location: Message:Quota 'T2A_CPUS' exceeded.  Limit: 125.0 in region us-central1. ForceSendFields:[] NullFields:[]}.
run #1: infra problem: create instance operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc0023b2aa0] Location: Message:Quota 'T2A_CPUS' exceeded.  Limit: 125.0 in region us-central1. ForceSendFields:[] NullFields:[]}.
run #2: infra problem: create instance operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc0023b2f00] Location: Message:Quota 'T2A_CPUS' exceeded.  Limit: 125.0 in region us-central1. ForceSendFields:[] NullFields:[]}.
run #3: infra problem: create instance operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc0013f1cc0] Location: Message:Quota 'T2A_CPUS' exceeded.  Limit: 125.0 in region us-central1. ForceSendFields:[] NullFields:[]}.
run #4: infra problem: create instance operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc0023b3180] Location: Message:Quota 'T2A_CPUS' exceeded.  Limit: 125.0 in region us-central1. ForceSendFields:[] NullFields:[]}.
run #5: infra problem: create instance operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc003b4c370] Location: Message:Quota 'T2A_CPUS' exceeded.  Limit: 125.0 in region us-central1. ForceSendFields:[] NullFields:[]}.
run #6: crashed: BUG: spinlock bad magic in release_metapage
run #7: crashed: BUG: spinlock bad magic in release_metapage
run #8: crashed: BUG: spinlock bad magic in release_metapage
run #9: crashed: BUG: spinlock bad magic in release_metapage
run #10: crashed: BUG: spinlock bad magic in release_metapage
run #11: crashed: BUG: spinlock bad magic in release_metapage
run #12: crashed: BUG: spinlock bad magic in release_metapage
run #13: crashed: BUG: spinlock bad magic in release_metapage
run #14: crashed: BUG: spinlock bad magic in release_metapage
run #15: crashed: BUG: spinlock bad magic in release_metapage
run #16: crashed: BUG: spinlock bad magic in release_metapage
run #17: crashed: BUG: spinlock bad magic in release_metapage
run #18: crashed: BUG: spinlock bad magic in release_metapage
run #19: crashed: BUG: spinlock bad magic in release_metapage
representative crash: BUG: spinlock bad magic in release_metapage, types: [LOCKDEP]
check whether we can drop unnecessary instrumentation
disabling configs for [BUG KASAN ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit e4d90d63d385228b1e0bcf31cc15539bbbc28f7f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 9b7f640c2b4035bfc9ad491cf49a30b38954827540bf46cda4497a9834b41a90
all runs: crashed: BUG: spinlock bad magic in release_metapage
representative crash: BUG: spinlock bad magic in release_metapage, types: [LOCKDEP]
the bug reproduces without the instrumentation
disabling configs for [KASAN ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed
kconfig minimization: base=7496 full=9711 leaves diff=1997
split chunks (needed=false): <1997>
split chunk #0 of len 1997 into 5 parts
testing without sub-chunk 1/5
disabling configs for [HANG LEAK UBSAN BUG KASAN ATOMIC_SLEEP], they are not needed
testing commit e4d90d63d385228b1e0bcf31cc15539bbbc28f7f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 981c94f44b5d87dc335c0635aa603ca63b4ba1d96868cfcaffad4ca8dbb5dc5d
all runs: crashed: BUG: spinlock bad magic in release_metapage
representative crash: BUG: spinlock bad magic in release_metapage, types: [LOCKDEP]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed
testing commit e4d90d63d385228b1e0bcf31cc15539bbbc28f7f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b9fc61c932482ecf468cc4a45f94a7fc5b75b0dc3971acca8abdf4901f97d30a
all runs: boot failed: can't ssh into the instance
unable to determine the verdict: 0 good runs (wanted 5), for bad wanted 5 in total, got 0
testing without sub-chunk 3/5
disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP HANG], they are not needed
testing commit e4d90d63d385228b1e0bcf31cc15539bbbc28f7f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 7b8b527bd088dca22c1bd6da6008eff31610fbaa2f1200db7f566f5beca66955
all runs: crashed: BUG: spinlock bad magic in release_metapage
representative crash: BUG: spinlock bad magic in release_metapage, types: [LOCKDEP]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed
testing commit e4d90d63d385228b1e0bcf31cc15539bbbc28f7f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 73ebd2c77cd5d2f5ee4b8415fd3e830402437925f4ab79ff77035c382994c430
all runs: crashed: BUG: spinlock bad magic in release_metapage
representative crash: BUG: spinlock bad magic in release_metapage, types: [LOCKDEP]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed
testing commit e4d90d63d385228b1e0bcf31cc15539bbbc28f7f gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 305c55d4239608dea13cb998f2d9fe2137bed83aabcb2c52dbabd45e0d30ff09
all runs: crashed: BUG: spinlock bad magic in release_metapage
representative crash: BUG: spinlock bad magic in release_metapage, types: [LOCKDEP]
the chunk can be dropped
minimized to 400 configs; suspects: [6LOWPAN ACPI_VIDEO DLM DUMMY DVB_AF9013 DVB_AF9033 DVB_AS102 DVB_AS102_FE DVB_B2C2_FLEXCOP DVB_B2C2_FLEXCOP_USB DVB_DIB3000MB DVB_DIB3000MC DVB_EC100 DVB_GP8PSK_FE DVB_RTL2830 DVB_RTL2832 DVB_RTL2832_SDR DVB_TEST_DRIVERS DVB_TTUSB_BUDGET DVB_TTUSB_DEC DVB_USB DVB_USB_A800 DVB_USB_AF9005 DVB_USB_AF9005_REMOTE DVB_USB_AF9015 DVB_USB_AF9035 DVB_USB_ANYSEE DVB_USB_AU6610 DVB_USB_AZ6007 DVB_USB_AZ6027 DVB_USB_CE6230 DVB_USB_CINERGY_T2 DVB_USB_CXUSB DVB_USB_CXUSB_ANALOG DVB_USB_DIB0700 DVB_USB_DIB3000MC DVB_USB_DIBUSB_MB DVB_USB_DIBUSB_MC DVB_USB_DIGITV DVB_USB_DTT200U DVB_USB_DTV5100 DVB_USB_DVBSKY DVB_USB_DW2102 DVB_USB_EC168 DVB_USB_GL861 DVB_USB_GP8PSK DVB_USB_LME2510 DVB_USB_M920X DVB_USB_MXL111SF DVB_USB_NOVA_T_USB2 DVB_USB_OPERA1 DVB_USB_PCTV452E DVB_USB_RTL28XXU DVB_USB_TECHNISAT_USB2 DVB_USB_TTUSB2 DVB_USB_UMT_010 DVB_USB_V2 DVB_USB_VP702X DVB_USB_VP7045 DVB_USB_ZD1301 DVB_VIDTV DVB_ZL10353 E100 ECRYPT_FS ECRYPT_FS_MESSAGING EEPROM_93CX6 EFS_FS ENCRYPTED_KEYS EQUALIZER EROFS_FS EROFS_FS_POSIX_ACL EROFS_FS_SECURITY EROFS_FS_XATTR EROFS_FS_ZIP EVM EVM_ADD_XATTRS EVM_ATTR_FSUUID EXFAT_FS EXPORTFS_BLOCK_OPS EXT3_FS_POSIX_ACL EXT3_FS_SECURITY EXT4_FS_SECURITY EXTCON_USBC_TUSB320 F2FS_CHECK_FS F2FS_FAULT_INJECTION F2FS_FS F2FS_FS_COMPRESSION F2FS_FS_LZ4 F2FS_FS_LZ4HC F2FS_FS_LZO F2FS_FS_LZORLE F2FS_FS_POSIX_ACL F2FS_FS_SECURITY F2FS_FS_XATTR F2FS_FS_ZSTD F2FS_STAT_FS FB_DEFERRED_IO FB_SYS_COPYAREA FB_SYS_FILLRECT FB_SYS_FOPS FB_SYS_IMAGEBLIT FB_TILEBLITTING FB_VIRTUAL FDDI FIB_RULES FIREWIRE FIREWIRE_NET FIREWIRE_OHCI FIREWIRE_SBP2 FRAMEBUFFER_CONSOLE_ROTATION FRONTSWAP FS_DAX FS_DAX_PMD FS_ENCRYPTION FS_ENCRYPTION_ALGS FS_VERITY FS_VERITY_BUILTIN_SIGNATURES FTL FW_LOADER_COMPRESS FW_LOADER_USER_HELPER_FALLBACK GACT_PROB GET_FREE_REGION GFS2_FS GFS2_FS_LOCKING_DLM GNSS_USB GOOGLE_COREBOOT_TABLE GOOGLE_FIRMWARE GOOGLE_MEMCONSOLE GOOGLE_MEMCONSOLE_COREBOOT GOOGLE_VPD GPIO_DLN2 GPIO_VIPERBOARD GREENASIA_FF GREYBUS GREYBUS_BRIDGED_PHY GREYBUS_ES2 GREYBUS_HID GREYBUS_USB GTP GVE HAVE_ARCH_USERFAULTFD_MINOR HAVE_IMA_KEXEC HDLC HDLC_CISCO HDLC_FR HDLC_PPP HDLC_RAW HDLC_RAW_ETH HDLC_X25 HDMI HFSPLUS_FS HFS_FS HIDRAW HID_ACCUTOUCH HID_ACRUX HID_ACRUX_FF HID_ALPS HID_APPLEIR HID_ASUS HID_AUREAL HID_BATTERY_STRENGTH HID_BETOP_FF HID_BIGBEN_FF HID_CMEDIA HID_CORSAIR HID_COUGAR HID_CP2112 HID_CREATIVE_SB0540 HID_ELAN HID_ELECOM HID_ELO HID_EMS_FF HID_FT260 HID_GEMBIRD HID_GFRM HID_GLORIOUS HID_GREENASIA HID_GT683R HID_GYRATION HID_HOLTEK HID_ICADE HID_JABRA HID_KEYTOUCH HID_KYE HID_LCPOWER HID_LED HID_LENOVO HID_LETSKETCH HID_LOGITECH_DJ HID_LOGITECH_HIDPP HID_MACALLY HID_MAGICMOUSE HID_MALTRON HID_MAYFLASH HID_MCP2221 HID_MEGAWORLD_FF HID_NTI HID_NTRIG HID_ORTEK HID_PENMOUNT HID_PETALYNX HID_PICOLCD HID_PICOLCD_BACKLIGHT HID_PICOLCD_CIR HID_PICOLCD_FB HID_PICOLCD_LCD HID_PICOLCD_LEDS HID_PID HID_PLANTRONICS HID_PRIMAX HID_PRODIKEYS HID_PXRC HID_RAZER HID_RETRODE HID_RMI HID_ROCCAT HID_SAITEK HID_SAMSUNG HID_SEMITEK HID_SENSOR_ACCEL_3D HID_SENSOR_ALS HID_SENSOR_CUSTOM_INTEL_HINGE HID_SENSOR_CUSTOM_SENSOR HID_SENSOR_DEVICE_ROTATION HID_SENSOR_GYRO_3D HID_SENSOR_HUB HID_SENSOR_HUMIDITY HID_SENSOR_IIO_COMMON HID_SENSOR_IIO_TRIGGER HID_SENSOR_INCLINOMETER_3D HID_SENSOR_MAGNETOMETER_3D HID_SENSOR_PRESS HID_SENSOR_PROX HID_SENSOR_TEMP HID_SIGMAMICRO HID_SPEEDLINK HID_STEAM HID_STEELSERIES HID_SUNPLUS HID_THINGM HID_TIVO HID_TOPRE HID_TOPSEED HID_TWINHAN HID_U2FZERO HID_UCLOGIC HID_UDRAW_PS3 HID_VIEWSONIC HID_VIVALDI HID_VIVALDI_COMMON HID_VRC2 HID_WACOM HID_WALTOP HID_WIIMOTE HID_XIAOMI HID_XINMO HID_ZYDACRON HMM_MIRROR HOLTEK_FF HOTPLUG_PCI_PCIE HPFS_FS I2C_CP2615 I2C_DIOLAN_U2C I2C_DLN2 I2C_MUX_REG I2C_ROBOTFUZZ_OSIF I2C_SI4713 I2C_SLAVE_EEPROM I2C_TINY_USB I2C_VIPERBOARD IEEE802154 IEEE802154_6LOWPAN IEEE802154_ATUSB IEEE802154_DRIVERS IEEE802154_HWSIM IEEE802154_NL802154_EXPERIMENTAL IEEE802154_SOCKET IFB IMA IMA_APPRAISE IMA_APPRAISE_MODSIG IMA_DEFAULT_HASH_SHA256 IMA_LSM_RULES IMA_MEASURE_ASYMMETRIC_KEYS IMA_NG_TEMPLATE IMA_QUEUE_EARLY_BOOT_KEYS IMA_READ_POLICY IMA_WRITE_POLICY INET6_AH INET6_ESP INET6_ESPINTCP INET6_ESP_OFFLOAD INET6_IPCOMP INET6_TUNNEL INET6_XFRM_TUNNEL INET_AH INET_DCCP_DIAG INET_DIAG_DESTROY INET_ESP INET_ESPINTCP INET_ESP_OFFLOAD INET_IPCOMP INET_MPTCP_DIAG INET_RAW_DIAG INET_SCTP_DIAG INET_UDP_DIAG INET_XFRM_TUNNEL INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_ADDR_TRANS_CONFIGFS INFINIBAND_IPOIB INFINIBAND_IPOIB_CM INFINIBAND_IPOIB_DEBUG INFINIBAND_ISER INFINIBAND_ON_DEMAND_PAGING INFINIBAND_RTRS INFINIBAND_SRP INFINIBAND_USER_ACCESS INFINIBAND_USER_MAD INFINIBAND_USER_MEM INPUT_ATI_REMOTE2 INPUT_CM109 INPUT_IMS_PCU INPUT_JOYDEV INPUT_KEYSPAN_REMOTE INPUT_LEDS INPUT_MOUSEDEV INPUT_MOUSEDEV_PSAUX INPUT_POWERMATE INPUT_UINPUT INPUT_YEALINK INTEGRITY INTEGRITY_ASYMMETRIC_KEYS INTEGRITY_AUDIT INTEGRITY_SIGNATURE INTEGRITY_TRUSTED_KEYRING IP6_NF_MATCH_AH IP6_NF_MATCH_EUI64 IP6_NF_MATCH_FRAG IP6_NF_MATCH_HL IP6_NF_MATCH_IPV6HEADER IP6_NF_MATCH_MH IP6_NF_MATCH_OPTS IP6_NF_MATCH_RPFILTER IP6_NF_MATCH_RT IP6_NF_MATCH_SRH IP6_NF_RAW IP6_NF_SECURITY IP6_NF_TARGET_HL IP6_NF_TARGET_NPT IP6_NF_TARGET_SYNPROXY IPV6_FOU IPV6_FOU_TUNNEL IPV6_GRE IPV6_ILA IPV6_MIP6 IPV6_MROUTE IPV6_MROUTE_MULTIPLE_TABLES IPV6_MULTIPLE_TABLES IPV6_OPTIMISTIC_DAD IPV6_PIMSM_V2 IPV6_ROUTER_PREF IPV6_ROUTE_INFO IPV6_RPL_LWTUNNEL IPV6_SEG6_BPF IPV6_SEG6_HMAC IPV6_SEG6_LWTUNNEL IPV6_SIT_6RD IPV6_SUBTREES IPV6_TUNNEL IPV6_VTI IPVLAN IPVLAN_L3S IPVTAP IP_ADVANCED_ROUTER IP_DCCP IP_DCCP_CCID3 IP_DCCP_TFRC_LIB IP_FIB_TRIE_STATS IP_MROUTE IP_MROUTE_COMMON IP_MROUTE_MULTIPLE_TABLES IP_NF_ARPFILTER IP_NF_ARPTABLES IP_NF_ARP_MANGLE IP_NF_MATCH_AH IP_NF_MATCH_ECN IP_NF_MATCH_RPFILTER IP_NF_MATCH_TTL IP_NF_RAW IP_NF_SECURITY IP_NF_TARGET_CLUSTERIP IP_NF_TARGET_ECN IP_NF_TARGET_NETMAP IP_NF_TARGET_REDIRECT IP_NF_TARGET_SYNPROXY IP_NF_TARGET_TTL IP_PIMSM_V1 IP_PIMSM_V2 IP_PNP_RARP IP_ROUTE_CLASSID IP_ROUTE_MULTIPATH IP_ROUTE_VERBOSE IP_SCTP IP_SET IP_SET_BITMAP_IP IP_SET_BITMAP_IPMAC IP_SET_BITMAP_PORT IP_SET_HASH_IP IP_SET_HASH_IPMAC IP_SET_HASH_IPMARK IP_SET_HASH_IPPORT IP_SET_HASH_IPPORTIP IP_SET_HASH_IPPORTNET IP_SET_HASH_MAC IP_SET_HASH_NET IP_SET_HASH_NETIFACE IP_SET_HASH_NETNET IP_SET_HASH_NETPORT IP_SET_HASH_NETPORTNET IP_SET_LIST_SET IP_VS_DH IP_VS_FO IP_VS_FTP IP_VS_IPV6 IP_VS_LBLC IP_VS_LBLCR IP_VS_LC IP_VS_MH IP_VS_NFCT IP_VS_NQ IP_VS_OVF IP_VS_PE_SIP IP_VS_PROTO_AH IP_VS_PROTO_AH_ESP IP_VS_PROTO_ESP IP_VS_PROTO_SCTP IP_VS_PROTO_TCP IP_VS_PROTO_UDP IP_VS_RR IP_VS_SED IP_VS_SH IP_VS_TWOS IP_VS_WLC IP_VS_WRR IR_IGORPLUGUSB IR_IGUANA IR_IMON IR_IMON_RAW IR_MCEUSB IR_REDRAT3 IR_STREAMZAP IR_TOY 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 LAPB LCD_CLASS_DEVICE MAC802154 MEDIA_RADIO_SUPPORT MEDIA_TEST_SUPPORT MFD_DLN2 MFD_VIPERBOARD MPTCP NET_IPGRE_DEMUX NFT_FWD_NETDEV NF_CONNTRACK_FTP NF_CONNTRACK_SIP NF_TABLES NF_TABLES_NETDEV RADIO_ADAPTERS RADIO_SI4713 RFKILL SND SOUND WAN XFRM ZONE_DEVICE]
disabling configs for [LEAK UBSAN BUG KASAN ATOMIC_SLEEP HANG], they are not needed
testing current HEAD c63962be84ef9c4f32e2a57404ceeda330ff3beb
testing commit c63962be84ef9c4f32e2a57404ceeda330ff3beb gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 999b7ee75b22c41dcebf855818d99357586a0953f4da0484d991ba26b0ccabb2
all runs: crashed: BUG: spinlock bad magic in release_metapage
representative crash: BUG: spinlock bad magic in release_metapage, types: [LOCKDEP]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 1h43m18.979005849s (build: 58m57.180283202s, test: 40m31.945498862s)
crash still not fixed or there were kernel test errors
commit msg: Linux 6.1.124
crash: BUG: spinlock bad magic in release_metapage
BUG: spinlock bad magic on CPU#1, jfsCommit/77
 lock: 0xffff0000cab246a8, .magic: ffff8000, .owner: /0, .owner_cpu: 512
CPU: 1 PID: 77 Comm: jfsCommit Not tainted 6.1.124-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call trace:
 dump_backtrace+0x100/0x150 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x18/0x24 arch/arm64/kernel/stacktrace.c:165
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x90/0xc8 lib/dump_stack.c:106
 dump_stack+0x18/0x58 lib/dump_stack.c:113
 spin_dump kernel/locking/spinlock_debug.c:69 [inline]
 spin_bug+0xa8/0xec kernel/locking/spinlock_debug.c:77
 debug_spin_lock_before kernel/locking/spinlock_debug.c:85 [inline]
 do_raw_spin_lock+0xb0/0x110 kernel/locking/spinlock_debug.c:114
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
 _raw_spin_lock_irqsave+0x74/0xb4 kernel/locking/spinlock.c:162
 __wake_up_common_lock kernel/sched/wait.c:137 [inline]
 __wake_up+0x5c/0xcc kernel/sched/wait.c:160
 unlock_metapage fs/jfs/jfs_metapage.c:38 [inline]
 release_metapage+0x8c/0x49c fs/jfs/jfs_metapage.c:736
 xtTruncate+0x410/0xb40
 jfs_free_zero_link+0x138/0x17c fs/jfs/namei.c:758
 jfs_evict_inode+0xfc/0x15c fs/jfs/inode.c:153
 evict+0x14c/0x2f0 fs/inode.c:705
 iput_final fs/inode.c:1834 [inline]
 iput+0x248/0x288 fs/inode.c:1860
 txUpdateMap+0x20c/0x2f4 fs/jfs/jfs_txnmgr.c:2367
 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]
 jfs_lazycommit+0x11c/0x33c fs/jfs/jfs_txnmgr.c:2732
 kthread+0xd8/0xf4 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864