syzbot


protection_fault: __x86_indirect_thunk_r11

Status: auto-obsoleted due to no activity on 2024/01/28 10:43
Reported-by: syzbot+db5432f4e917e1e852be@syzkaller.appspotmail.com
First crash: 400d, last: 400d
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd protection_fault: __x86_indirect_thunk_r11 (2) 15 190d 272d 0/3 auto-obsoleted due to no activity on 2024/08/17 10:13
openbsd protection_fault: __x86_indirect_thunk_r11 (3) 9 55d 107d 0/3 upstream: reported on 2024/08/18 10:02

Sample crash report:
kernel: protection fault trap, code=0
Stopped at      __x86_indirect_thunk_r11+0x14:  ret
ddb{0}> 
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
the kernel did not panic
ddb{0}> trace
__x86_indirect_thunk_r11() at __x86_indirect_thunk_r11+0x14
softclock_process_kclock_timeout(fffffd80710d0f00,0) at softclock_process_kclock_timeout+0x1d7 sys/kern/kern_timeout.c:695
softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:754
softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffffffff82c3fff0) at sched_idle+0x41e sys/kern/kern_sched.c:191
end trace frame: 0x0, count: -7
ddb{0}> show registers
rdi               0x73000000001e542a
rsi                                0
rbp               0xffff80002115f770
rbx                                0
rdx                                0
rcx               0xffff800021159540
rax                              0x9
r8                              0xd2
r9                              0xd2
r10               0x18848adc15ef44f7
r11               0x6b00000000060000
r12               0x73000000001e542a
r13               0xffffffff82bab5b8    timeout_spinlock_obj
r14               0x75636578652d7a79
r15               0x6b00000000060000
rip               0xffffffff81f81314    __x86_indirect_thunk_r11+0x14
cs                               0x8
rflags                       0x10246    __ALIGN_SIZE+0xf246
rsp               0xffff80002115f720
ss                              0x10
__x86_indirect_thunk_r11+0x14:  ret
ddb{0}> show proc
PROC (idle0) tid=331988 pid=77089 tcnt=1 stat=onproc
    flags process=14000<NOZOMBIE,SYSTEM> proc=40000200<SYSTEM,CPUPEG>
    runpri=0, usrpri=50, slppri=0, nice=20
    wchan=0x0, wmesg=, ps_single=0x0
    forw=0xff997d4164510c28, list=0xffff800021159a90,0xffff800021158d58
    process=0xffff8000fffff240 user=0xffff80002115a000, vmspace=0xffffffff82c9dff0
    estcpu=0, cpticks=20885, pctcpu=0.0, user=0, sys=0, intr=1
ddb{0}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
  2994  224691  88429      0  3        0x80  nanoslp       syz-executor.0
  2994  285001  88429      0  3   0x4000080  fsleep        syz-executor.0
  2994  177992  88429      0  3   0x4000080  netio         syz-executor.0
 82588  440625  33382      0  3        0x80  nanoslp       syz-executor.6
 82588    4613  33382      0  3   0x4000080  pipewr        syz-executor.6
 82588  380174  33382      0  3   0x4000080  fsleep        syz-executor.6
 93939  447834  44127      0  3        0x82  piperd        syz-executor.1
 23785  381598  44127      0  3        0x82  piperd        syz-executor.3
 98947  402236      1      0  3    0x100083  ttyin         getty
 76055  448450      0      0  3     0x14200  acct          acct
  9416   90848  44127      0  3        0x82  piperd        syz-executor.5
 68325   48216  44127      0  3        0x82  piperd        syz-executor.4
 33382  336142  44127      0  2       0x482                syz-executor.6
  1092  404651      0      0  3     0x14280  nfsidl        nfsio
 32232  467719      0      0  3     0x14280  nfsidl        nfsio
 22544  308484      0      0  3     0x14280  nfsidl        nfsio
 22352  387584      0      0  3     0x14280  nfsidl        nfsio
 28268  148844      0      0  3     0x14280  nfsidl        nfsio
 54680  469057      0      0  3     0x14280  nfsidl        nfsio
  8026  305708      0      0  3     0x14280  nfsidl        nfsio
 85980  197761      0      0  3     0x14280  nfsidl        nfsio
 89593  259400      0      0  3     0x14280  nfsidl        nfsio
 52932   64728      0      0  3     0x14280  nfsidl        nfsio
 46648  443835      0      0  3     0x14280  nfsidl        nfsio
 26653  104694      0      0  3     0x14280  nfsidl        nfsio
 80494  383722      0      0  3     0x14280  nfsidl        nfsio
 97197  286040      0      0  3     0x14280  nfsidl        nfsio
 30492  514265      0      0  3     0x14280  nfsidl        nfsio
 76678  427468      0      0  3     0x14280  nfsidl        nfsio
 26575  249060      0      0  3     0x14280  nfsidl        nfsio
 86504  197767      0      0  3     0x14280  nfsidl        nfsio
 74451  168679      0      0  3     0x14280  nfsidl        nfsio
 55557  480446      0      0  3     0x14280  nfsidl        nfsio
 75508   90039      0      0  3     0x14200  bored         sosplice
 50536  175714  44127      0  3        0x82  piperd        syz-executor.7
 76001   95621  44127      0  3        0x82  piperd        syz-executor.2
 88429  452540  44127      0  7         0x2                syz-executor.0
 44127  351073  19524      0  3   0x2000082  wait          syz-fuzzer
 44127  170953  19524      0  3   0x6000082  thrsleep      syz-fuzzer
 44127   69850  19524      0  3   0x6000082  wait          syz-fuzzer
 44127  151398  19524      0  3   0x6000082  thrsleep      syz-fuzzer
 44127    5271  19524      0  3   0x6000082  wait          syz-fuzzer
 44127  173229  19524      0  3   0x6000082  thrsleep      syz-fuzzer
 44127   78885  19524      0  3   0x6000082  wait          syz-fuzzer
 44127  151064  19524      0  3   0x6000082  wait          syz-fuzzer
 44127  399170  19524      0  3   0x6000082  thrsleep      syz-fuzzer
 44127  319836  19524      0  3   0x6000082  thrsleep      syz-fuzzer
 44127   54191  19524      0  3   0x6000082  thrsleep      syz-fuzzer
 44127  135594  19524      0  3   0x6000082  thrsleep      syz-fuzzer
 44127  269209  19524      0  3   0x6000082  wait          syz-fuzzer
 44127   28907  19524      0  3   0x6000082  kqread        syz-fuzzer
 44127  404613  19524      0  3   0x6000082  wait          syz-fuzzer
 44127   49350  19524      0  3   0x6000082  wait          syz-fuzzer
 44127   27446  19524      0  3   0x6000082  thrsleep      syz-fuzzer
 19524  236071  51214      0  3    0x10008a  sigsusp       ksh
 51214  230843  71438      0  3        0x9a  kqread        sshd
 71438  342126      1      0  3        0x88  kqread        sshd
 18706  318391  89465     74  3   0x1100092  bpf           pflogd
 89465  279207      1      0  3        0x80  netio         pflogd
 42414  235162  46002     73  3   0x1100090  kqread        syslogd
 46002  222242      1      0  3    0x100082  netio         syslogd
 66346  350029      1      0  3    0x100080  kqread        resolvd
 25248  197525  59137     77  3    0x100092  kqread        dhcpleased
 92556  421602  59137     77  3    0x100092  kqread        dhcpleased
 59137   12679      1      0  3        0x80  kqread        dhcpleased
 57954   16704      0      0  3     0x14200  bored         smr
 88049  374937      0      0  3     0x14200  pgzero        zerothread
 24852  396238      0      0  3     0x14200  aiodoned      aiodoned
 49130  118488      0      0  3     0x14200  syncer        update
 69357  402492      0      0  3     0x14200  cleaner       cleaner
  6725  351491      0      0  3     0x14200  reaper        reaper
 98061  470514      0      0  3     0x14200  pgdaemon      pagedaemon
 46007  317505      0      0  3     0x14200  bored         viomb
 35026  332982      0      0  3  0x40014200  acpi0         acpi0
  9287   86945      0      0  3  0x40014200                idle1
 51992  461704      0      0  3     0x14200  bored         softnet3
 14669   83819      0      0  3     0x14200  bored         softnet2
 28923  153585      0      0  3     0x14200  bored         softnet1
 65573   47019      0      0  3     0x14200  bored         softnet0
 63624  244935      0      0  3     0x14200  bored         systqmp
 97229  284690      0      0  3     0x14200  bored         systq
  3592   36767      0      0  3     0x14200  tmoslp        softclockmp
 77537  418097      0      0  3  0x40014200  tmoslp        softclock
*77089  331988      0      0  7  0x40014200                idle0
     1  478497      0      0  3        0x82  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{0}> show all locks
CPU 0:
shared mutex timeout r = 0 (0xffffffff82bab5b8)
#0  witness_lock+0x447
#1  timeout_run+0xbb sys/kern/kern_timeout.c:661
#2  softclock_process_kclock_timeout+0x1d7 sys/kern/kern_timeout.c:695
#3  softclock+0x11a sys/kern/kern_timeout.c:754
#4  softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
#5  Xsoftclock+0x27
#6  acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
#7  sched_idle+0x41e sys/kern/kern_sched.c:191
#8  proc_trampoline+0x10
Process 77089 (idle0) thread 0xffff800021159540 (331988)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d0f4f8)
#0  witness_lock+0x447
#1  softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88
#2  Xsoftclock+0x27
#3  acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
#4  sched_idle+0x41e sys/kern/kern_sched.c:191
#5  proc_trampoline+0x10
shared mutex timeout r = 0 (0xffffffff82bab5b8)
#0  witness_lock+0x447
#1  timeout_run+0xbb sys/kern/kern_timeout.c:661
#2  softclock_process_kclock_timeout+0x1d7 sys/kern/kern_timeout.c:695
#3  softclock+0x11a sys/kern/kern_timeout.c:754
#4  softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
#5  Xsoftclock+0x27
#6  acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
#7  sched_idle+0x41e sys/kern/kern_sched.c:191
#8  proc_trampoline+0x10
ddb{0}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10201   6484K    7511K  78643K     13144        0
            pcb    13     11K      13K  78643K       305        0
         rtable   241      7K       7K  78643K       727        0
             pf    35     10K      10K  78643K       136        0
         ifaddr    46     16K      16K  78643K       124        0
        ifgroup    60      2K       2K  78643K       196        0
         sysctl     3      0K       0K  78643K         3        0
       counters    62     36K      36K  78643K       152        0
       ioctlops     0      0K       4K  78643K      1807        0
            iov     0      0K      16K  78643K      1017        0
          mount     1      1K       1K  78643K         1        0
            log     0      0K       0K  78643K         4        0
         vnodes  1351     84K      85K  78643K      3052        0
      UFS quota     1     32K      32K  78643K         1        0
      UFS mount     5     36K      36K  78643K         5        0
            shm     2      1K      25K  78643K       103        0
         VM map     2      1K       1K  78643K         2        0
            sem    12      0K       0K  78643K      1477        0
        dirhash    12      2K       3K  78643K        54        0
           ACPI  1697    195K     286K  78643K     12548        0
      file desc    12     41K      89K  78643K     10124        0
          sigio     0      0K       0K  78643K        51        0
           proc    70     91K     115K  78643K      1026        0
        subproc   104      6K       6K  78643K       221        0
    NFS srvsock     1      0K       0K  78643K         1        0
     NFS daemon     1     16K      16K  78643K         1        0
    ip_moptions     0      0K       0K  78643K       522        0
       in_multi    99      7K       7K  78643K       305        0
    ether_multi     1      0K       0K  78643K        12        0
            mrt     0      0K       0K  78643K        15        0
    ISOFS mount     1     32K      32K  78643K         1        0
  MSDOSFS mount     1     16K      16K  78643K         1        0
           ttys    79    360K     360K  78643K        79        0
           exec     0      0K       1K  78643K      1000        0
     pfkey data     0      0K       0K  78643K         2        0
            tdb     3      0K       0K  78643K         3        0
        pagedep     1      8K       8K  78643K         1        0
       inodedep     1     32K      32K  78643K         1        0
         newblk     1      0K       0K  78643K         1        0
        VM swap     8     62K      64K  78643K        10        0
       UVM amap   384     94K      95K  78643K     96640        0
       UVM aobj   131      4K       4K  78643K       131        0
        memdesc     1      4K       4K  78643K         1        0
    crypto data     1      1K       1K  78643K         1        0
    ip6_options     0      0K       0K  78643K       147        0
            NDP    13      0K       2K  78643K        92        0
           temp    74   5924K    6052K  78643K     83493        0
         kqueue    12     18K      24K  78643K       380        0
      SYN cache     2     16K      16K  78643K         2        0
ddb{0}> show all pools
Name      Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache    128       22    0        0     1     0     1     1     0     8    0
rtpcb      120      283    0      280     3     2     1     3     0     8    0
rtentry    112      222    0      110     4     0     4     4     0     8    0
unpcb      144     7040    0     7025    69    66     3     6     0     8    2
syncache   304      184    0      184     8     7     1     1     0     8    1
tcpqe       32      186   46      186     4     4     0     1     0     8    0
tcpcb      808     3138    0     3119    37    28     9    11     0     8    6
arp        120       38    0       19     1     0     1     1     0     8    0
inpcb      368     5568    0     5539    48    39     9    14     0     8    6
nd6        136       60    0       35     2     0     2     2     0     8    0
pkpcb       40       44    0       44     3     3     0     1     0     8    0
kcovpl      48       17    0        9     1     0     1     1     0     8    0
ppxss      1256      22    0       22     5     5     0     1     0     8    0
pffrag     232       71    0       67     5     4     1     1     0   482    0
pffrnode    88       71    0       67     5     4     1     1     0     8    0
pffrent     40      155    0      151     6     5     1     1     0     8    0
pfosfp      40     1428    0     1005     5     0     5     5     0     8    0
pfosfpen   112     1428    0      714    21     0    21    21     0     8    0
pfstitem    24      167    0      149     1     0     1     1     0     8    0
pfstkey    128      167    0      149     2     1     1     2     0     8    0
pfstate    376      167    0      149     7     5     2     4     0     8    0
pfrule     1344      21    0       16     2     1     1     2     0     8    0
rttmr      136        1    0        1     1     1     0     1     0     8    0
art_heap8  4096       1    0        0     1     0     1     1     0     8    0
art_heap4  256      912    0      442    31     1    30    30     0     8    0
art_table   32      913    0      442     4     0     4     4     0     8    0
art_node    16      221    0      119     1     0     1     1     0     8    0
sysvmsgpl   40        4    0        4     1     1     0     1     0     8    0
semapl     112     1475    0     1465     1     0     1     1     0     8    0
shmpl      112      128    0        0     4     0     4     4     0     8    0
dirhash    1024      45    0       28     3     0     3     3     0     8    0
dino2pl    256    14144    0    12666    93     0    93    93     0     8    0
ffsino     272    14144    0    12666    99     0    99    99     0     8    0
nchpl      144    26682    0    25036    64     0    64    64     0     8    0
uvmvnodes   80     5926    0        0   121     0   121   121     0     8    0
vnodes     216     5926    0        0   330     0   330   330     0     8    0
namei      1024   84510    0    84510     7     6     1     2     0     8    1
percpumem   16       89    0       45     1     0     1     1     0     8    0
vcpupl     2048      40    0        0     5     0     5     5     0     8    0
vmpool     696       50    0       10     4     0     4     4     0     8    0
kstatmem   264      116    0       90     2     0     2     2     0     8    0
scxspl     216    86352    0    86352    15    14     1     8     1     8    1
plimitpl   152      557    0      541     1     0     1     1     0     8    0
sigapl     424    10598    0    10533     9     1     8     8     0     8    0
futexpl     64    73188    0    73186     9     8     1     1     0     8    0
knotepl    120      325    0        0    10     5     5    10     0     8    0
kqueuepl   216      579    0      571     3     2     1     3     0     8    0
pipepl     320     1270    0     1241    40    37     3     8     0     8    0
fdescpl    496    10417    0    10392     5     1     4     5     0     8    0
filepl     152    52591    0    52347    96    83    13    19     0     8    3
lockfpl    104     2011    0     2009     2     1     1     2     0     8    0
lockfspl    48      564    0      562     1     0     1     1     0     8    0
sessionpl  144       35    0       18     1     0     1     1     0     8    0
pgrppl      48       73    0       56     1     0     1     1     0     8    0
ucredpl    104     5099    0     5087     1     0     1     1     0     8    0
zombiepl   144    10533    0    10533     2     1     1     1     0     8    1
processpl  1072   10598    0    10533     5     0     5     5     0     8    0
procpl     680    26183    0    26098    14     5     9    10     0     8    0
sosppl     168       84    0       84    11    11     0     1     0     8    0
sockpl     488    13005    0    12964   280   266    14    29     0     8    8
mcl64k     65536     17    0        0     3     1     2     3     0     8    0
mcl16k     16384     22    0        0     3     1     2     3     0     8    0
mcl12k     12288     26    0        0     2     0     2     2     0     8    0
mcl9k      9216      13    0        0     1     0     1     1     0     8    0
mcl8k      8192      35    0        0     3     0     3     3     0     8    0
mcl4k      4096      32    0        0     3     0     3     3     0     8    0
mcl2k2     2112      11    0        0     1     0     1     1     0     8    0
mcl2k      2048     608    0        0    29    10    19    29     0     8    0
mtagpl      96       93    0        0     3     0     3     3     0     8    0
mbufpl     256     1901    0        0   114     0   114   114     0     8    0
bufpl      288    18414    0    12092   452     0   452   452     0     8    0
anonpl      24  1017188    0  1007989   190   122    68    90     0   186    0
amapchunkpl 152  303905    0   303230    94    61    33    43     0   158    1
amappl16   200    20366    0    20119   118   104    14    33     0     8    0
amappl15   192       19    0       19     1     1     0     1     0     8    0
amappl14   184      200    0      183     2     1     1     2     0     8    0
amappl13   176        7    0        7     1     1     0     1     0     8    0
amappl12   168    11285    0    11250     4     2     2     3     0     8    0
amappl11   160       93    0       79     1     0     1     1     0     8    0
amappl10   152       40    0       27     1     0     1     1     0     8    0
amappl9    144      202    0      202    12    12     0     1     0     8    0
amappl8    136      576    0      448     5     0     5     5     0     8    0
amappl7    128      246    0      215     2     0     2     2     0     8    0
amappl6    120      447    0      437     1     0     1     1     0     8    0
amappl5    112      313    0      302     1     0     1     1     0     8    0
amappl4    104      652    0      618     4     3     1     2     0     8    0
amappl3     96    60355    0    60281     5     2     3     3     0     8    0
amappl2     88    11139    0    11062     3     1     2     3     0     8    0
amappl1     80    44576    0    44030    23    11    12    23     0     8    0
amappl      88    95801    0    95603     7     1     6     6     0    92    0
dma4096    4096       1    0        1     1     1     0     1     0     8    0
dma1024    1024       1    0        0     1     0     1     1     0     8    0
dma256     256        6    0        6     1     1     0     1     0     8    0
dma128     128      253    0      253     1     1     0     1     0     8    0
dma64       64        6    0        6     1     1     0     1     0     8    0
dma32       32        7    0        7     1     1     0     1     0     8    0
dma16       16       18    0       17     1     0     1     1     0     8    0
aobjpl      72      130    0        0     3     0     3     3     0     8    0
uaddrrnd    24    10467    0    10402     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24    10467    0    10402     1     0     1     1     0     8    0
vmmpekpl   168    69764    0    69690     5     1     4     4     0     8    0
vmmpepl    168   601942    0   599855   244   135   109   116     0   357    3
vmsppl     464    10466    0    10402    10     1     9     9     0     8    0
rwobjpl     56   147641    0   140197   119    12   107   109     0     8    0
pdppl      4096   20941    0    20844   654   545   109   109     0     8   12
pvpl        32  3185218    0  3170529   525   382   143   338     0   265    0
pmappl     248    10466    0    10402     6     1     5     5     0     8    0
extentpl    40       56    0       38     1     0     1     1     0     8    0
phpool     112     1607    0      643    28     0    28    28     0     8    0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
__x86_indirect_thunk_r11() at __x86_indirect_thunk_r11+0x14
softclock_process_kclock_timeout(fffffd80710d0f00,0) at softclock_process_kclock_timeout+0x1d7 sys/kern/kern_timeout.c:695
softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:754
softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffffffff82c3fff0) at sched_idle+0x41e sys/kern/kern_sched.c:191
end trace frame: 0x0, count: -7
ddb{0}> machine ddbcpu 1
Stopped at      x86_ipi_db+0x1e:        addq    $0x8,%rsp
ddb{1}> trace
x86_ipi_db(ffff800020d48ff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff82d0f2f0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82d0f2f0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
syscall(ffff800021279ae0) at syscall+0x5cd mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff800021279ae0) at syscall+0x5cd sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x6f8cefbb9940, count: -6

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/10/30 10:42 openbsd a19ee134455f 116af91f .config console log report ci-openbsd-multicore protection_fault: __x86_indirect_thunk_r11
* Struck through repros no longer work on HEAD.