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MSan: Uninitialized Memory in db_nextframe



Hello,

syzbot found the following issue on:

HEAD commit:    4f1ffa745781 arm/efi.h, x86/efi.h: Fix whitespace around R..
git tree:       netbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=17be0ab5080000
kernel config:  https://syzkaller.appspot.com/x/.config?x=739e57438eb9ed9e
dashboard link: https://syzkaller.appspot.com/bug?extid=a7f6d429933f62ca1e19
compiler:       Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+a7f6d429933f62ca1e19%syzkaller.appspotmail.com@localhost

[ 265.1730191] panic: MSan: Uninitialized Variable 'pi' From spec_open()

[ 265.1830128] cpu1: Begin traceback...
[ 265.2030134] vpanic() at netbsd:vpanic+0xc9d
[ 265.2330117] panic() at netbsd:panic+0x1b3 sys/kern/subr_prf.c:210
[ 265.2730130] __msan_warning() at netbsd:__msan_warning+0x11e kmsan_report_inline sys/kern/subr_msan.c:234 [inline]
[ 265.2730130] __msan_warning() at netbsd:__msan_warning+0x11e sys/kern/subr_msan.c:615
[ 265.3130128] db_nextframe() at netbsd:db_nextframe+0xd8a
[ 265.3530130] db_stack_trace_print() at netbsd:db_stack_trace_print+0x1983 sys/arch/x86/x86/db_trace.c:277
[ 265.4030129] ipi_msg_cpu_handler() at netbsd:ipi_msg_cpu_handler+0x224 sys/kern/subr_ipi.c:347
[ 265.4430118] ipi_cpu_handler() at netbsd:ipi_cpu_handler+0x1dc sys/kern/subr_ipi.c:309
[ 265.4830109] x86_ipi_handler() at netbsd:x86_ipi_handler+0x180
[ 265.5230111] Xresume_lapic_ipi() at netbsd:Xresume_lapic_ipi+0x1b
[ 265.5330107] --- interrupt ---
[ 265.5730139] Xspllower() at netbsd:Xspllower+0xe
[ 265.6130136] device_lookup_private() at netbsd:device_lookup_private+0x52 device_lookup sys/kern/subr_autoconf.c:2651 [inline]
[ 265.6130136] device_lookup_private() at netbsd:device_lookup_private+0x52 sys/kern/subr_autoconf.c:2669
[ 265.6530142] comstart() at netbsd:comstart+0x99
[ 265.6930146] ttwrite() at netbsd:ttwrite+0x1fd6 sys/kern/tty.c:2271
[ 265.7330107] comwrite() at netbsd:comwrite+0x208 sys/dev/ic/com.c:1260
[ 265.7730109] cdev_write() at netbsd:cdev_write+0x2e0 sys/kern/subr_devsw.c:1232
[ 265.8130098] spec_write() at netbsd:spec_write+0x561
[ 265.8530094] VOP_WRITE() at netbsd:VOP_WRITE+0x374
[ 265.8930157] vn_write() at netbsd:vn_write+0x709
[ 265.9330101] do_filewritev() at netbsd:do_filewritev+0xd92 sys/kern/sys_generic.c:476
[ 265.9730094] sys___syscall() at netbsd:sys___syscall+0x2c6 sys/kern/sys_syscall.c:90
[ 266.0230097] syscall() at netbsd:syscall+0x60c sy_invoke sys/sys/syscallvar.h:94 [inline]
[ 266.0230097] syscall() at netbsd:syscall+0x60c sys/arch/x86/x86/syscall.c:138
[ 266.0330098] --- syscall (number 121 via SYS_syscall) ---
[ 266.0530087] netbsd:syscall+0x60c:
[ 266.0530087] cpu1: End traceback...
[ 266.0530087] fatal breakpoint trap in supervisor mode
[ 266.0630084] trap type 1 code 0 rip 0xffffffff802228ad cs 0x8 rflags 0x286 cr2 0x7bd34ba3d0e0 ilevel 0x8 rsp 0xfffffc80cf169460
[ 266.0730096] curlwp 0xfffffc8013ed14c0 pid 6085.9784 lowest kstack 0xfffffc80cf1632c0
Stopped in pid 6085.9784 (syz-executor.0) at    netbsd:breakpoint+0x5:  leave
?
breakpoint() at netbsd:breakpoint+0x5
vpanic() at netbsd:vpanic+0xc9d
panic() at netbsd:panic+0x1b3 sys/kern/subr_prf.c:210
__msan_warning() at netbsd:__msan_warning+0x11e kmsan_report_inline sys/kern/subr_msan.c:234 [inline]
__msan_warning() at netbsd:__msan_warning+0x11e sys/kern/subr_msan.c:615
db_nextframe() at netbsd:db_nextframe+0xd8a
db_stack_trace_print() at netbsd:db_stack_trace_print+0x1983 sys/arch/x86/x86/db_trace.c:277
ipi_msg_cpu_handler() at netbsd:ipi_msg_cpu_handler+0x224 sys/kern/subr_ipi.c:347
ipi_cpu_handler() at netbsd:ipi_cpu_handler+0x1dc sys/kern/subr_ipi.c:309
x86_ipi_handler() at netbsd:x86_ipi_handler+0x180
Xresume_lapic_ipi() at netbsd:Xresume_lapic_ipi+0x1b
--- interrupt ---
Xspllower() at netbsd:Xspllower+0xe
device_lookup_private() at netbsd:device_lookup_private+0x52 device_lookup sys/kern/subr_autoconf.c:2651 [inline]
device_lookup_private() at netbsd:device_lookup_private+0x52 sys/kern/subr_autoconf.c:2669
comstart() at netbsd:comstart+0x99
ttwrite() at netbsd:ttwrite+0x1fd6 sys/kern/tty.c:2271
comwrite() at netbsd:comwrite+0x208 sys/dev/ic/com.c:1260
cdev_write() at netbsd:cdev_write+0x2e0 sys/kern/subr_devsw.c:1232
spec_write() at netbsd:spec_write+0x561
VOP_WRITE() at netbsd:VOP_WRITE+0x374
vn_write() at netbsd:vn_write+0x709
do_filewritev() at netbsd:do_filewritev+0xd92 sys/kern/sys_generic.c:476
sys___syscall() at netbsd:sys___syscall+0x2c6 sys/kern/sys_syscall.c:90
syscall() at netbsd:syscall+0x60c sy_invoke sys/sys/syscallvar.h:94 [inline]
syscall() at netbsd:syscall+0x60c sys/arch/x86/x86/syscall.c:138
--- syscall (number 121 via SYS_syscall) ---
netbsd:syscall+0x60c:
Panic string: MSan: Uninitialized Variable 'pi' From spec_open()

PID    LID S CPU     FLAGS       STRUCT LWP *               NAME WAIT
6085 >9784 7   1       100   fffffc8013ed14c0     syz-executor.0
6085  6085 2   1  10000000   fffffc8013bd5040     syz-executor.0
10859 10859 2   1       140   fffffc80137e3b00     syz-executor.2
8537  8537 2   1       140   fffffc80137f7b80     syz-executor.3
1436  1436 3   1       180   fffffc80137e36c0     syz-executor.2 parked
1174  1174 3   1        40   fffffc8013a40bc0     syz-executor.4 biowait
1165  1165 3   1       180   fffffc80137f0700     syz-executor.0 parked
8165  8165 3   1       180   fffffc80137f7300     syz-executor.4 parked
2662  2662 3   1       180   fffffc80137f7740     syz-executor.0 parked
834    834 3   1       180   fffffc80137f0b40     syz-executor.4 parked
6201  6201 2   1       140   fffffc801355d580     syz-executor.0
6452  6452 3   1       180   fffffc8013a40780     syz-executor.1 parked
6231  6231 3   1       180   fffffc8013690600     syz-executor.0 parked
3664  3664 3   1       180   fffffc80134da540     syz-executor.4 parked
2022  2022 2   1       140   fffffc80134da980     syz-executor.1
1255  1583 3   1       1c0   fffffc80136901c0         syz-fuzzer wait
1255  1229 3   1       180   fffffc8013578a00         syz-fuzzer wait
1255  1236 3   1       180   fffffc80135785c0         syz-fuzzer parked
1255   988 3   1       180   fffffc801355d9c0         syz-fuzzer wait
1255  1151 3   1       1c0   fffffc801355d140         syz-fuzzer parked
1255  1195 3   1       180   fffffc80134da100         syz-fuzzer parked
1255  1194 3   1       1c0   fffffc80133bd0c0         syz-fuzzer parked
1255  1105 2   1       140   fffffc8012b56900         syz-fuzzer
1255  1223 3   1       180   fffffc8012b564c0         syz-fuzzer parked
1255  1222 3   1       180   fffffc8012b56080         syz-fuzzer parked
1255  1084 3   1       1c0   fffffc8012330280         syz-fuzzer parked
1255  1078 3   1       180   fffffc8012af0780         syz-fuzzer wait
1255   819 2   1       140   fffffc801229bac0         syz-fuzzer
1255  1255 3   1       180   fffffc80124deb80         syz-fuzzer wait
1085  1085 3   1       180   fffffc8012b3c8c0               sshd select
1070  1070 3   1       180   fffffc8012b3c480              getty nanoslp
1073  1073 3   1       180   fffffc801229b680              getty nanoslp
1074  1074 3   1       180   fffffc801229b240              getty nanoslp
1252  1252 3   1       1c0   fffffc801219b600              getty ttyraw
1093  1093 3   1       180   fffffc8012b3c040               sshd select
941    941 3   1       180   fffffc80123306c0             powerd kqueue
688    688 3   1       180   fffffc801242eb40            syslogd kqueue
602    602 3   1       180   fffffc801242e700             dhcpcd poll
547    547 3   1       180   fffffc8012af0bc0             dhcpcd poll
546    546 3   1       180   fffffc801242e2c0             dhcpcd poll
587    587 3   1       180   fffffc8012af0340             dhcpcd poll
289    289 3   1       180   fffffc80124de740             dhcpcd poll
288    288 3   1       180   fffffc8012330b00             dhcpcd poll
351    351 3   1       180   fffffc80124de300             dhcpcd poll
1        1 3   1       180   fffffc8011ebd940               init wait
0     6493 5   1       200   fffffc80137e3280           (zombie)
0      911 3   1       200   fffffc80133bd500             ktrace ktrwait
0     1757 2   1       240   fffffc80137f02c0          acctwatch
0      968 3   1       200   fffffc801219ba40            physiod physiod
0      194 3   1       200   fffffc80121a4a80          pooldrain pooldrain
0      193 2   1       240   fffffc80121a4640            ioflush
0      192 3   1       200   fffffc80121a4200           pgdaemon pgdaemon
0      169 3   1       200   fffffc801219b1c0               usb7 usbevt
0      167 3   1       200   fffffc8012103a00               usb6 usbevt
0      165 3   1       200   fffffc80121035c0               usb5 usbevt
0      164 3   1       200   fffffc8012103180               usb4 usbevt
0       31 3   1       200   fffffc80120699c0               usb3 usbevt
0       63 3   1       200   fffffc8012069580               usb2 usbevt
0      126 3   1       200   fffffc8012069140               usb1 usbevt
0      125 3   1       200   fffffc8011ecc980               usb0 usbevt
0      124 3   1       200   fffffc8011ecc540         usbtask-dr usbtsk
0      123 3   1       200   fffffc80117c46c0         usbtask-hc usbtsk
0      122 2   1       240   fffffc8011ecc100             npfgc0
0      121 3   1       200   fffffc8011ebd500            rt_free rt_free
0      120 3   1       200   fffffc8011ebd0c0              unpgc unpgc
0      119 2   1       200   fffffc8011eb9900    key_timehandler
0      118 3   1       200   fffffc8011eb94c0    icmp6_wqinput/1 icmp6_wqinput
0      117 3   0       200   fffffc8011eb9080    icmp6_wqinput/0 icmp6_wqinput
0      116 2   1       200   fffffc8011e9b8c0          nd6_timer
0      115 3   1       200   fffffc8011e9b480    carp6_wqinput/1 carp6_wqinput
0      114 3   0       200   fffffc8011e9b040    carp6_wqinput/0 carp6_wqinput
0      113 3   1       200   fffffc8011cc4b80     carp_wqinput/1 carp_wqinput
0      112 3   0       200   fffffc8011cc4740     carp_wqinput/0 carp_wqinput
0      111 3   1       200   fffffc8011cc4300     icmp_wqinput/1 icmp_wqinput
0      110 3   0       200   fffffc8011cc5780     icmp_wqinput/0 icmp_wqinput
0      109 2   1       200   fffffc8011cc5340           rt_timer
0      108 2   1       200   fffffc8011cc5bc0        vmem_rehash
0       99 3   1       200   fffffc80117c6b40          entbutler entropy
0       98 2   1       240   fffffc80117c6700              viomb
0       97 3   1       200   fffffc80117c62c0      vioif0_txrx/1 vioif0_txrx
0       96 3   0       200   fffffc80117c4b00      vioif0_txrx/0 vioif0_txrx
0       29 3   1       200   fffffc80117c4280           scsibus0 sccomp
0       28 3   1       200   fffffc80103c0ac0               pms0 pmsreset
0       27 3   1       200   fffffc80103c0680            xcall/1 xcall
0       26 1   1       200   fffffc80103c0240          softser/1
0       25 1   1       200   fffffc80103bfa80          softclk/1
0       24 1   1       200   fffffc80103bf640          softbio/1
0       23 1   1       200   fffffc80103bf200          softnet/1
0       22 1   1       201   fffffc800f1f3a40             idle/1
0       21 3   1       200   fffffc800f1f3600           lnxsyswq lnxsyswq
0       20 3   1       200   fffffc800f1f31c0           lnxubdwq lnxubdwq
0       19 3   1       200   fffffc800f1f1a00           lnxpwrwq lnxpwrwq
0       18 3   1       200   fffffc800f1f15c0           lnxlngwq lnxlngwq
0       17 3   1       200   fffffc800f1f1180           lnxhipwq lnxhipwq
0       16 3   1       200   fffffc800f1ec9c0           lnxrcugc lnxrcugc
0       15 3   1       200   fffffc800f1ec580             sysmon smtaskq
0       14 3   1       200   fffffc800f1ec140         pmfsuspend pmfsuspend
0       13 3   1       200   fffffc800f1e8980           pmfevent pmfevent
0       12 3   1       200   fffffc800f1e8540         sopendfree sopendfr
0       11 3   1       200   fffffc800f1e8100            iflnkst iflnkst
0       10 3   1       200   fffffc800f1df940           nfssilly nfssilly
0        9 3   1       200   fffffc800f1df500             vdrain vdrain
0        8 3   1       200   fffffc800f1df0c0          modunload mod_unld
0        7 3   0       200   fffffc800ebdb900            xcall/0 xcall
0        6 1   0       200   fffffc800ebdb4c0          softser/0
0        5 1   0       200   fffffc800ebdb080          softclk/0
0        4 1   0       200   fffffc800ebd98c0          softbio/0
0        3 1   0       200   fffffc800ebd9480          softnet/0
0    >   2 1   0       201   fffffc800ebd9040             idle/0
0        0 2   1       240   ffffffff86868e40            swapper
[Locks tracked through LWPs]

****** LWP 6085.9784 (syz-executor.0) @ 0xfffffc8013ed14c0, l_stat=7

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at config_init)
lock address : 0xffffffff86900c80 type     :               spin
initialized  : 0xffffffff852def7a
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  1
relevant cpu :                  1 last held:                  1
relevant lwp : 0xfffffc8013ed14c0 last held: 000000000000000000
last locked  : 0xffffffff853028e2 unlocked*: 0xffffffff85302ad8
owner field  : 0x0000000000000600 wait/spin:                0/1

****** LWP 8537.8537 (syz-executor.3) @ 0xfffffc80137f7b80, l_stat=2

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at uvmspace_fork)
lock address : 0xfffffc8013576860 type     :     sleep/adaptive
initialized  : 0xffffffff84fcf3c4
shared holds :                  0 exclusive:                  0
shares wanted:                  1 exclusive:                  0
relevant cpu :                  1 last held:              65535
relevant lwp : 0xfffffc80137f7b80 last held: 000000000000000000
last locked  : 0xffffffff84f680ea unlocked*: 0xffffffff84f7adfc
owner/count  : 000000000000000000 flags    : 000000000000000000
Turnstile: no active turnstile for this lock.

****** LWP 1174.1174 (syz-executor.4) @ 0xfffffc8013a40bc0, l_stat=3

*** Locks held:

* Lock 0 (initialized at vcache_alloc)
lock address : 0xfffffc8013da3d40 type     :     sleep/adaptive
initialized  : 0xffffffff856a1ae6
shared holds :                  0 exclusive:                  1
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  1
relevant lwp : 0xfffffc8013a40bc0 last held: 0xfffffc8013a40bc0
last locked* : 0xffffffff8572fd86 unlocked : 0xffffffff85730135
owner/count  : 0xfffffc8013a40bc0 flags    : 0x0000000000000004
Turnstile: no active turnstile for this lock.

* Lock 1 (initialized at vcache_alloc)
lock address : 0xfffffc8013da7680 type     :     sleep/adaptive
initialized  : 0xffffffff856a1ae6
shared holds :                  0 exclusive:                  1
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  1
relevant lwp : 0xfffffc8013a40bc0 last held: 0xfffffc8013a40bc0
last locked* : 0xffffffff8572fd86 unlocked : 000000000000000000
owner/count  : 0xfffffc8013a40bc0 flags    : 0x0000000000000004
Turnstile: no active turnstile for this lock.

*** Locks wanted: none

****** LWP 547.547 (dhcpcd) @ 0xfffffc8012af0bc0, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff868f7e00 type     :     sleep/adaptive
initialized  : 0xffffffff851a99f3
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  0
relevant lwp : 0xfffffc8012af0bc0 last held: 000000000000000000
last locked  : 000000000000000000 unlocked*: 000000000000000000
owner field  : 000000000000000000 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

****** LWP 546.546 (dhcpcd) @ 0xfffffc801242e2c0, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff868f7e00 type     :     sleep/adaptive
initialized  : 0xffffffff851a99f3
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  0
relevant lwp : 0xfffffc801242e2c0 last held: 000000000000000000
last locked  : 000000000000000000 unlocked*: 000000000000000000
owner field  : 000000000000000000 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

****** LWP 288.288 (dhcpcd) @ 0xfffffc8012330b00, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff868f7e00 type     :     sleep/adaptive
initialized  : 0xffffffff851a99f3
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  0
relevant lwp : 0xfffffc8012330b00 last held: 000000000000000000
last locked  : 000000000000000000 unlocked*: 000000000000000000
owner field  : 000000000000000000 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

****** LWP 351.351 (dhcpcd) @ 0xfffffc80124de300, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff868f7e00 type     :     sleep/adaptive
initialized  : 0xffffffff851a99f3
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  0
relevant lwp : 0xfffffc80124de300 last held: 000000000000000000
last locked  : 000000000000000000 unlocked*: 000000000000000000
owner field  : 000000000000000000 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

****** LWP 0.11 (iflnkst) @ 0xfffffc800f1e8100, l_stat=3

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff868f7e00 type     :     sleep/adaptive
initialized  : 0xffffffff851a99f3
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  0
relevant lwp : 0xfffffc800f1e8100 last held: 000000000000000000
last locked  : 000000000000000000 unlocked*: 000000000000000000
owner field  : 000000000000000000 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

****** LWP 0.5 (softclk/0) @ 0xfffffc800ebdb080, l_stat=1

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff868f7e00 type     :     sleep/adaptive
initialized  : 0xffffffff851a99f3
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  0 last held:                  0
relevant lwp : 0xfffffc800ebdb080 last held: 000000000000000000
last locked  : 000000000000000000 unlocked*: 000000000000000000
owner field  : 000000000000000000 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

****** LWP 0.2 (idle/0) @ 0xfffffc800ebd9040, l_stat=1

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at main)
lock address : 0xffffffff868f7d00 type     :               spin
initialized  : 0xffffffff8508cca4
shared holds :                  0 exclusive:                  1
shares wanted:                  0 exclusive:                  1
relevant cpu :                  0 last held:                  1
relevant lwp : 0xfffffc800ebd9040 last held: 0xfffffc8013ed14c0
last locked* : 0xffffffff85336b84 unlocked : 0xffffffff802ef9f8
curcpu holds :                  1 wanted by: 000000000000000000

****** LWP 0.0 (swapper) @ 0xffffffff86868e40, l_stat=2

*** Locks held: none

*** Locks wanted:

* Lock 0 (initialized at module_hook_init)
lock address : 0xffffffff868f7e00 type     :     sleep/adaptive
initialized  : 0xffffffff851a99f3
shared holds :                  0 exclusive:                  0
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  0
relevant lwp : 0xffffffff86868e40 last held: 000000000000000000
last locked  : 000000000000000000 unlocked*: 000000000000000000
owner field  : 000000000000000000 wait/spin:                0/0
Turnstile: no active turnstile for this lock.

[Locks tracked through CPUs]

******* Locks held on cpu1:

* Lock 0 (initialized at main)
lock address : 0xffffffff868f7d00 type     :               spin
initialized  : 0xffffffff8508cca4
shared holds :                  0 exclusive:                  1
shares wanted:                  0 exclusive:                  1
relevant cpu :                  1 last held:                  1
relevant lwp : 0xfffffc8013ed14c0 last held: 0xfffffc8013ed14c0
last locked* : 0xffffffff85336b84 unlocked : 0xffffffff802ef9f8
curcpu holds :                  1 wanted by: 000000000000000000

* Lock 1 (initialized at tty_init)
lock address : 0xffffffff868b3bf0 type     :               spin
initialized  : 0xffffffff854f0889
shared holds :                  0 exclusive:                  1
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  1
relevant lwp : 0xfffffc8013ed14c0 last held: 0xfffffc8013ed14c0
last locked* : 0xffffffff854ecd78 unlocked : 0xffffffff854ed7b0
owner field  : 0x0000000000010600 wait/spin:                0/1

* Lock 2 (initialized at kprintf_init)
lock address : 0xffffffff868aac00 type     :               spin
initialized  : 0xffffffff853c783c
shared holds :                  0 exclusive:                  1
shares wanted:                  0 exclusive:                  0
relevant cpu :                  1 last held:                  1
relevant lwp : 0xfffffc8013ed14c0 last held: 0xfffffc8013ed14c0
last locked* : 0xffffffff853c8664 unlocked : 0xffffffff853c906e
owner field  : 0x0000000000000800 wait/spin:                0/1

              PAGE FLAG   PQ            UOBJECT              UANON
0xfffffc8000017180 0001 00000000                0x0                0x0
0xfffffc8000017200 0041 00000000                0x0                0x0
0xfffffc8000017280 0041 00000000                0x0                0x0
0xfffffc8000017300 0041 00000000                0x0                0x0
0xfffffc8000017380 0041 00000000                0x0                0x0
0xfffffc8000017400 0041 00000000                0x0                0x0
0xfffffc8000017480 0041 00000000                0x0                0x0
0xfffffc8000017500 0041 00000000                0x0                0x0
0xfffffc8000017580 0041 00000000                0x0                0x0
0xfffffc8000017600 0041 00000000                0x0                0x0
0xfffffc8000017680 0041 00000000                0x0                0x0
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0xfffffc8000024080 0001 00000000                0x0                0x0
0xfffffc8000024100 0001 00000000                0x0                0x0
0xfffffc8000024180 0001 00000000                0x0                0x0
0xfffffc8000024200 0001 00000000                0x0                0x0
0xfffffc8000024280 0001 00000000                0x0                0x0
0xfffffc8000024300 0001 00000000                0x0                0x0
0xfffffc8000024380 0001 00000000                0x0                0x0
0xfffffc8000024400 0001 00000000                0x0                0x0
0xfffffc8000024480 0001 00000000                0x0                0x0
0xfffffc8000024500 0001 00000000                0x0                0x0
0xfffffc8000024580 0001 00000000                0x0                0x0
0xfffffc8000024600 0001 00000000                0x0                0x0
0xfffffc8000024680 0001 00000000                0x0                0x0
0xfffffc8000024700 0001 00000000                0x0                0x0
0xfffffc8000024780 0001 00000000                0x0                0x0
0xfffffc8000024800 0001 00000000                0x0                0x0
0xfffffc8000024880 0001 00000000                0x0                0x0
0xfffffc8000024900 0001 00000000                0x0                0x0
0xfffffc8000024980 0001 00000000                0x0                0x0
0xfffffc8000024a00 0001 00000000                0x0                0x0
0xfffffc8000024a80 0001 00000000                0x0                0x0
0xfffffc8000024b00 0001 00000000                0x0                0x0
0xfffffc8000024b80 0001 00000000                0x0                0x0
0xfffffc8000024c00 0001 00000000                0x0                0x0
0xfffffc8000024c80 0001 00000000                0x0                0x0
0xfffffc8000024d00 0001 00000000                0x0                0x0
0xfffffc8000024d80 0001 00000000                0x0                0x0
0xfffffc8000024e00 0001 00000000                0x0                0x0
0xfffffc8000024e80 0001 00000000                0x0                0x0
0xfffffc8000024f00 0001 00000000                0x0                0x0
0xfffffc8000024f80 0001 00000000                0x0                0x0
0xfffffc8000025000 0001 00000000                0x0                0x0
0xfffffc8000025080 0001 00000000                0x0                0x0
0xfffffc8000025100 0001 00000000                0x0                0x0
0xfffffc8000025180 0001 00000000                0x0                0x0
0xfffffc8000025200 0001 00000000                0x0                0x0
0xfffffc8000025280 0001 00000000                0x0                0x0
0xfffffc8000025300 0001 00000000                0x0                0x0
0xfffffc8000025380 0001 00000000                0x0                0x0
0xfffffc8000025400 0001 00000000                0x0                0x0
0xfffffc8000025480 0001 00000000                0x0                0x0
0xfffffc8000025500 0001 00000000                0x0                0x0
0xfffffc8000025580 0001 00000000                0x0                0x0
0xfffffc8000025600 0001 00000000                0x0                0x0
0xfffffc8000025680 0001 00000000                0x0                0x0
0xfffffc8000025700 0001 00000000                0x0                0x0
0xfffffc8000025780 0001 00000000                0x0                0x0
0xfffffc8000025800 0001 00000000                0x0                0x0
0xfffffc8000025880 0001 00000000                0x0                0x0
0xfffffc8000025900 0001 00000000                0x0                0x0
0xfffffc8000025980 0001 00000000                0x0                0x0
0xfffffc8000025a00 0001 00000000                0x0                0x0
0xfffffc8000025a80 0001 00000000                0x0                0x0
0xfffffc8000025b00 0001 00000000                0x0                0x0
0xfffffc8000025b80 0001 00000000                0x0                0x0
0xfffffc8000025c00 0001 00000000                0x0                0x0
0xfffffc8000025c80 0001 00000000                0x0                0x0
0xfffffc8000025d00 0001 00000000                0x0                0x0
0xfffffc8000025d80 0001 00000000                0x0                0x0
0xfffffc8000025e00 0001 00000000                0x0                0x0
0xfffffc8000025e80 0001 00000000                0x0                0x0
0xfffffc8000025f00 0001 00000000                0x0                0x0
0xfffffc8000025f80 0001 00000000                0x0                0x0
0xfffffc8000026000 0001 00000000                0x0                0x0
0xfffffc8000026080 0001 00000000                0x0                0x0
0xfffffc8000026100 0001 00000000                0x0                0x0
0xfffffc8000026180 0001 00000000                0x0                0x0
0xfffffc8000026200 0001 00000000                0x0                0x0
0xfffffc8000026280 0001 00000000                0x0                0x0
0xfffffc8000026300 0001 00000000                0x0                0x0
0xfffffc8000026380 0001 00000000                0x0                0x0
0xfffffc8000026400 0001 00000000                0x0                0x0
0xfffffc8000026480 0001 00000000                0x0                0x0
0xfffffc8000026500 0001 00000000                0x0                0x0
0xfffffc8000026580 0001 00000000                0x0                0x0
0xfffffc8000026600 0001 00000000                0x0                0x0
0xfffffc8000026680 0001 00000000                0x0                0x0
0xfffffc8000026700 0001 00000000                0x0                0x0
0xfffffc8000026780 0001 00000000                0x0                0x0
0xfffffc8000026800 0001 00000000                0x0                0x0
0xfffffc8000026880 0001 00000000                0x0                0x0
0xfffffc8000026900 0001 00000000                0x0                0x0
0xfffffc8000026980 0001 00000000                0x0                0x0
0xfffffc8000026a00 0001 00000000                0x0                0x0
0xfffffc8000026a80 0001 00000000                0x0                0x0
0xfffffc8000026b00 0001 00000000                0x0                0x0
0xfffffc8000026b80 0001 00000000                0x0                0x0
0xfffffc8000026c00 0001 00000000                0x0                0x0
0xfffffc8000026c80 0001 00000000                0x0                0x0
0xfffffc8000026d00 0001 00000000                0x0                0x0
0xfffffc8000026d80 0001 00000000                0x0                0x0
0xfffffc8000026e00 0001 00000000                0x0                0x0
0xfffffc8000026e80 0001 00000000                0x0                0x0
0xfffffc8000026f00 0001 00000000                0x0                0x0
0xfffffc8000026f80 0001 00000000                0x0                0x0
0xfffffc8000027000 0001 00000000                0x0                0x0
0xfffffc8000027080 0001 00000000                0x0                0x0
0xfffffc8000027100 0001 00000000                0x0                0x0
0xfffffc8000027180 0001 00000000                0x0                0x0
0xfffffc8000027200 0001 00000000                0x0                0x0
0xfffffc8000027280 0001 00000000                0x0                0x0
0xfffffc8000027300 0001 00000000                0x0                0x0
0xfffffc8000027380 0001 00000000                0x0                0x0
0xfffffc8000027400 0001 00000000                0x0                0x0
0xfffffc8000027480 0001 00000000                0x0                0x0
0xfffffc8000027500 0001 00000000                0x0                0x0
0xfffffc8000027580 0001 00000000                0x0                0x0
0xfffffc8000027600 0001 00000000                0x0                0x0
0xfffffc8000027680 0001 00000000                0x0                0x0
0xfffffc8000027700 0001 00000000                0x0                0x0
0xfffffc8000027780 0001 00000000                0x0                0x0
0xfffffc8000027800 0001 00000000                0x0                0x0
0xfffffc8000027880 0001 00000000                0x0                0x0
0xfffffc8000027900 0001 00000000                0x0                0x0
0xfffffc8000027980 0001 00000000                0x0                0x0
0xfffffc8000027a00 0001 00000000                0x0                0x0
0xfffffc8000027a80 0001 00000000                0x0                0x0
0xfffffc8000027b00 0001 00000000                0x0                0x0
0xfffffc8000027b80 0001 00000000                0x0                0x0
0xfffffc8000027c00 0001 00000000                0x0                0x0
0xfffffc8000027c80 0001 00000000                0x0                0x0
0xfffffc8000027d00 0001 00000000                0x0                0x0
0xfffffc8000027d80 0001 00000000                0x0                0x0
0xfffffc8000027e00 0001 00000000                0x0                0x0
0xfffffc8000027e80 0001 00000000                0x0                0x0
0xfffffc8000027f00 0001 00000000                0x0                0x0
0xfffffc8000027f80 0001 00000000                0x0                0x0
0xfffffc8000028000 0001 00000000                0x0                0x0
0xfffffc8000028080 0001 00000000                0x0                0x0
0xfffffc8000028100 0001 00000000                0x0                0x0
0xfffffc8000028180 0001 00000000                0x0                0x0
0xfffffc8000028200 0001 00000000                0x0                0x0
0xfffffc8000028280 0001 00000000                0x0                0x0
0xfffffc8000028300 0001 00000000                0x0                0x0
0xfffffc8000028380 0001 00000000                0x0                0x0
0xfffffc8000028400 0001 00000000                0x0                0x0
0xfffffc8000028480 0001 00000000                0x0                0x0
0xfffffc8000028500 0001 00000000                0x0                0x0
0xfffffc8000028580 0001 00000000                0x0                0x0
0xfffffc8000028600 0001 00000000                0x0                0x0
0xfffffc8000028680 0001 00000000                0x0                0x0
0xfffffc8000028700 0001 00000000                0x0                0x0
0xfffffc8000028780 0001 00000000                0x0                0x0
0xfffffc8000028800 0001 00000000                0x0                0x0
0xfffffc8000028880 0001 00000000                0x0                0x0
0xfffffc8000028900 0001 00000000                0x0                0x0
0xfffffc8000028980 0001 00000000                0x0                0x0
0xfffffc8000028a00 0001 00000000                0x0                0x0
0xfffffc8000028a80 0001 00000000                0x0                0x0
0xfffffc8000028b00 0001 00000000                0x0                0x0
0xfffffc8000028b80 0001 00000000                0x0                0x0
0xfffffc8000028c00 0001 00000000                0x0                0x0
0xfffffc8000028c80 0001 00000000                0x0                0x0
0xfffffc8000028d00 0001 00000000                0x0                0x0
0xfffffc8000028d80 0001 00000000                0x0                0x0
0xfffffc8000028e00 0001 00000000                0x0                0x0
0xfffffc8000028e80 0001 00000000                0x0                0x0
0xfffffc8000028f00 0001 00000000                0x0                0x0
0xfffffc8000028f80 0001 00000000                0x0                0x0
0xfffffc8000029000 0001 00000000                0x0                0x0
0xfffffc8000029080 0001 00000000                0x0                0x0
0xfffffc8000029100 0001 00000000                0x0                0x0
0xfffffc8000029180 0001 00000000                0x0                0x0
0xfffffc8000029200 0001 00000000                0x0                0x0
0xfffffc8000029280 0001 00000000                0x0                0x0
0xfffffc8000029300 0001 00000000                0x0                0x0
0xfffffc8000029380 0001 00000000                0x0                0x0
0xfffffc8000029400 0001 00000000                0x0                0x0
0xfffffc8000029480 0001 00000000                0x0                0x0
0xfffffc8000029500 0001 00000000                0x0                0x0
0xfffffc8000029580 0001 00000000                0x0                0x0
0xfffffc8000029600 0001 00000000                0x0                0x0
0xfffffc8000029680 0001 00000000                0x0                0x0
0xfffffc8000029700 0001 00000000                0x0                0x0
0xfffffc8000029780 0001 00000000                0x0                0x0
0xfffffc8000029800 0001 00000000                0x0                0x0
0xfffffc8000029880 0001 00000000                0x0                0x0
0xfffffc8000029900 0001 00000000                0x0                0x0
0xfffffc8000029980 0001 00000000                0x0                0x0
0xfffffc8000029a00 0001 00000000                0x0                0x0
0xfffffc8000029a80 0001 00000000                0x0                0x0
0xfffffc8000029b00 0001 00000000                0x0                0x0
0xfffffc8000029b80 0001 00000000                0x0                0x0
0xfffffc8000029c00 0001 00000000                0x0                0x0
0xfffffc8000029c80 0001 00000000                0x0                0x0
0xfffffc8000029d00 0001 00000000                0x0                0x0
0xfffffc8000029d80 0001 00000000                0x0                0x0
0xfffffc8000029e00 0001 00000000                0x0                0x0
0xfffffc8000029e80 0001 00000000                0x0                0x0
0xfffffc8000029f00 0001 00000000                0x0                0x0
0xfffffc8000029f80 0001 00000000                0x0                0x0
0xfffffc800002a000 0001 00000000                0x0                0x0
0xfffffc800002a080 0001 00000000                0x0                0x0
0xfffffc800002a100 0001 00000000                0x0                0x0
0xfffffc800002a180 0001 00000000                0x0                0x0
0xfffffc800002a200 0001 00000000                0x0                0x0
0xfffffc800002a280 0001 00000000                0x0                0x0
0xfffffc800002a300 0001 00000000                0x0                0x0
0xfffffc800002a380 0001 00000000                0x0                0x0
0xfffffc800002a400 0001 00000000                0x0                0x0
0xfffffc800002a480 0001 00000000                0x0                0x0
0xfffffc800002a500 0001 00000000                0x0                0x0
0xfffffc800002a580 0001 00000000                0x0                0x0
0xfffffc800002a600 0001 00000000                0x0           

---
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