syzbot


panic: timeout_add: to_ticks (-ADDR) < 0

Status: closed as dup on 2019/02/16 08:24
Reported-by: syzbot+d77cc86bec0ee187125a@syzkaller.appspotmail.com
First crash: 1389d, last: 1389d
Duplicate of (1):
Title Repro Cause bisect Fix bisect Count Last Reported
panic: timeout_add: to_ticks < 0 C 66 1384d 1388d
duplicates (2):
Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
panic: timeout_add: to_ticks (-2) < 0 C 4 1389d 1389d 0/3 closed as dup on 2019/02/15 12:58
panic: timeout_add: to_ticks (-3) < 0 C 2 1389d 1389d 0/3 closed as dup on 2019/02/15 18:07

Sample crash report:
login: panic: timeout_add: to_ticks (-973078528) < 0
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*225150  58898      0         0x2          0    0  syz-executor2130
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:399
panic() at panic+0x15c sys/kern/subr_prf.c:208
timeout_add(ffff800000669260,c6000000) at timeout_add+0x179 sys/kern/kern_timeout.c:190
pcppi_bell(ffff800000669200,9,c6000000,1) at pcppi_bell+0x2a0 sys/dev/isa/pcppi.c:234
spkrioctl(1b00,80085301,ffff8000149944c0,2,ffff80001495d078) at spkrioctl+0x123 tone sys/dev/isa/spkr.c:89 [inline]
spkrioctl(1b00,80085301,ffff8000149944c0,2,ffff80001495d078) at spkrioctl+0x123 sys/dev/isa/spkr.c:489
VOP_IOCTL(fffffd80355d5710,80085301,ffff8000149944c0,2,fffffd803f7c7ba0,ffff80001495d078) at VOP_IOCTL+0x9a sys/kern/vfs_vops.c:290
vn_ioctl(fffffd80361d90f8,80085301,ffff8000149944c0,ffff80001495d078) at vn_ioctl+0xc9 sys/kern/vfs_vnops.c:512
sys_ioctl(ffff80001495d078,ffff800014994608,ffff8000149945f0) at sys_ioctl+0x62d
syscall(ffff8000149946a0) at syscall+0x535
Xsyscall(6,0,7f7ffffcda88,0,1,7f7ffffcda98) at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffcda20, count: 5
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports.  Insufficient info makes it difficult to find and fix bugs.
ddb> 
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
timeout_add: to_ticks (-973078528) < 0
ddb> trace
db_enter() at db_enter+24
panic() at panic+348
timeout_add(ffff800000669260,c6000000) at timeout_add+377
pcppi_bell(ffff800000669200,9,c6000000,1) at pcppi_bell+672
spkrioctl(1b00,80085301,ffff8000149944c0,2,ffff80001495d078) at spkrioctl+291
VOP_IOCTL(fffffd80355d5710,80085301,ffff8000149944c0,2,fffffd803f7c7ba0,ffff80001495d078) at VOP_IOCTL+154
vn_ioctl(fffffd80361d90f8,80085301,ffff8000149944c0,ffff80001495d078) at vn_ioctl+201
sys_ioctl(ffff80001495d078,ffff800014994608,ffff8000149945f0) at sys_ioctl+1581
syscall(ffff8000149946a0) at syscall+1333
Xsyscall(6,0,7f7ffffcda88,0,1,7f7ffffcda98) at Xsyscall+296
end of kernel
end trace frame: 0x7f7ffffcda20, count: -10
ddb> show registers
rdi                                0
rsi                                1
rbp             18446603336566784224
rbx             18446603336566784400
rdx                                2
rcx                                1
rax                                1
r8              18446603336566784160
r9                                 1
r10               279886934289127801
r11              2502221657416412312
r12                     206158430216
r13             18446603336566784240
r14                              256
r15                                1
rip             18446744071581504680    db_enter+24
cs                                 8
rflags                           582
rsp             18446603336566784208
ss                                16
db_enter+24:    addq    $8,%rsp
ddb> show proc
PROC (syz-executor2130) pid=225150 stat=onproc
    flags process=2<EXEC> proc=0
    pri=50, usrpri=50, nice=20
    forw=0xffffffffffffffff, list=0xffff80001495d2d0,0xffffffff8225bc68
    process=0xffff8000ffff6358 user=0xffff80001498f000, vmspace=0xfffffd803f015108
    estcpu=0, cpticks=0, pctcpu=0.0
    user=0, sys=0, intr=0
ddb> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
*58898  225150  34911      0  7         0x2                syz-executor2130
 34911  456630  89072      0  3    0x10008a  pause         ksh
 89072  354430  23284      0  3        0x92  select        sshd
 79593  267214      1      0  3    0x100083  ttyin         getty
 23284  444955      1      0  3        0x80  select        sshd
 15247  436527  17402     73  3    0x100090  kqread        syslogd
 17402  142758      1      0  3    0x100082  netio         syslogd
 47565  507769      1     77  3    0x100090  poll          dhclient
 13477   17358      1      0  3        0x80  poll          dhclient
 47007  498988      0      0  3     0x14200  pgzero        zerothread
 72504  182861      0      0  3     0x14200  aiodoned      aiodoned
 40145  441429      0      0  3     0x14200  syncer        update
 91685  203554      0      0  3     0x14200  cleaner       cleaner
 32314  311262      0      0  3     0x14200  reaper        reaper
 98168  433293      0      0  3     0x14200  pgdaemon      pagedaemon
 30014    2684      0      0  3     0x14200  bored         crynlk
 77429  429331      0      0  3     0x14200  bored         crypto
 25772  236285      0      0  3  0x40014200  acpi0         acpi0
 18785   65609      0      0  3     0x14200  bored         softnet
 31357   84818      0      0  3     0x14200  bored         systqmp
 57765  453358      0      0  3     0x14200  bored         systq
 74963  173525      0      0  3  0x40014200  bored         softclock
 37948  152056      0      0  3  0x40014200                idle0
     1  165260      0      0  3        0x82  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb> show all locks
No such command
ddb> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim Kern Lim
         devbuf  9427   6306K    6307K  78643K     10520        0        0
            pcb    23      9K       9K  78643K        55        0        0
         rtable    61      1K       2K  78643K       115        0        0
         ifaddr    21      7K       7K  78643K        21        0        0
       counters    19     16K      16K  78643K        19        0        0
       ioctlops     0      0K       2K  78643K        13        0        0
          mount     1      1K       1K  78643K         1        0        0
         vnodes  1166     73K      73K  78643K      1172        0        0
      UFS quota     1     32K      32K  78643K         1        0        0
      UFS mount     5     36K      36K  78643K         5        0        0
            shm     2      1K       1K  78643K         2        0        0
         VM map     2      0K       0K  78643K         2        0        0
            sem     2      0K       0K  78643K         2        0        0
        dirhash    12      2K       2K  78643K        12        0        0
           ACPI  1777    193K     286K  78643K     12501        0        0
      file desc     1      0K       0K  78643K         1        0        0
           proc    40     30K      38K  78643K       207        0        0
    NFS srvsock     1      0K       0K  78643K         1        0        0
     NFS daemon     1     16K      16K  78643K         1        0        0
       in_multi    11      0K       0K  78643K        11        0        0
    ether_multi     1      0K       0K  78643K         1        0        0
    ISOFS mount     1     32K      32K  78643K         1        0        0
  MSDOSFS mount     1     16K      16K  78643K         1        0        0
           ttys    18     79K      79K  78643K        18        0        0
           exec     0      0K       1K  78643K       150        0        0
        pagedep     1      8K       8K  78643K         1        0        0
       inodedep     1     32K      32K  78643K         1        0        0
         newblk     1      0K       0K  78643K         1        0        0
        VM swap     7     26K      26K  78643K         7        0        0
       UVM amap    47      2K       3K  78643K       653        0        0
       UVM aobj     2      2K       2K  78643K         2        0        0
        memdesc     1      4K       4K  78643K         1        0        0
    crypto data     1      1K       1K  78643K         1        0        0
            NDP     3      0K       0K  78643K         3        0        0
           temp    30   2327K    2391K  78643K      1695        0        0
      SYN cache     2     16K      16K  78643K         2        0        0
ddb> show all pools
Name      Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp         64        2    0        0     1     0     1     1     0     8    0
inpcbpl    280       22    0       16     1     0     1     1     0     8    0
plimitpl   152       13    0        8     1     0     1     1     0     8    0
rtentry    112       23    0        1     1     0     1     1     0     8    0
syncache   264        5    0        5     1     0     1     1     0     8    1
tcpcb      544        8    0        5     1     0     1     1     0     8    0
art_heap8  4096       1    0        0     1     0     1     1     0     8    0
art_heap4  256       96    0        0     6     0     6     6     0     8    0
art_table   32       97    0        0     1     0     1     1     0     8    0
art_node    16       22    0        2     1     0     1     1     0     8    0
dirhash    1024      17    0        0     3     0     3     3     0     8    0
dino1pl    128     1383    0       18    45     0    45    45     0     8    0
ffsino     240     1383    0       18    81     0    81    81     0     8    0
nchpl      144     1555    0       30    57     0    57    57     0     8    0
uvmvnodes   72     1392    0        0    26     0    26    26     0     8    0
vnodes     200     1392    0        0    74     0    74    74     0     8    0
namei      1024    3262    0     3262     2     1     1     1     0     8    1
scxspl     192     2343    0     2343     8     2     6     6     0     8    6
sigapl     432      174    0      164     2     0     2     2     0     8    0
knotepl    112        5    0        0     1     0     1     1     0     8    0
kqueuepl   104        1    0        0     1     0     1     1     0     8    0
pipepl     112      114    0      107     2     1     1     1     0     8    0
fdescpl    424      175    0      164     2     0     2     2     0     8    0
filepl     120      808    0      765     2     0     2     2     0     8    0
lockfpl    104        7    0        6     2     1     1     1     0     8    0
lockfspl    32        4    0        3     2     1     1     1     0     8    0
sessionpl  112       17    0        9     1     0     1     1     0     8    0
pgrppl      48       17    0        9     1     0     1     1     0     8    0
ucredpl     96       47    0       40     1     0     1     1     0     8    0
zombiepl   144      164    0      164     2     1     1     1     0     8    1
processpl  840      188    0      164     4     1     3     4     0     8    0
procpl     600      188    0      164     3     0     3     3     0     8    0
sockpl     384       64    0       48     2     0     2     2     0     8    0
mcl4k      4096      10    0       10     1     0     1     1     0     8    1
mcl2k      2048    5630    0     5602     6     0     6     6     0     8    2
mtagpl      80        2    0        2     1     1     0     1     0     8    0
mbufpl     256     9753    0     9716     6     2     4     4     0     8    0
bufpl      256     1997    0      254   109     0   109   109     0     8    0
anonpl      16    16903    0    15823     7     2     5     7     0    62    0
amapchunkpl 152     491    0      456     2     0     2     2     0   158    0
amappl16   192       73    0       68     1     0     1     1     0     8    0
amappl15   184        1    0        0     1     0     1     1     0     8    0
amappl14   176        1    0        1     1     1     0     1     0     8    0
amappl13   168       15    0       12     1     0     1     1     0     8    0
amappl12   160        6    0        6     1     0     1     1     0     8    1
amappl11   152      174    0      165     1     0     1     1     0     8    0
amappl10   144       43    0       43     2     1     1     1     0     8    1
amappl9    136       97    0       95     1     0     1     1     0     8    0
amappl8    128      108    0      102     1     0     1     1     0     8    0
amappl7    120       30    0       26     1     0     1     1     0     8    0
amappl6    112       38    0       34     1     0     1     1     0     8    0
amappl5    104      362    0      351     1     0     1     1     0     8    0
amappl4     96      254    0      234     1     0     1     1     0     8    0
amappl3     88      112    0      107     1     0     1     1     0     8    0
amappl2     80      559    0      523     1     0     1     1     0     8    0
amappl1     72    11596    0    11210    16     6    10    16     0     8    0
amappl      72      367    0      348     1     0     1     1     0    75    0
dma4096    4096       1    0        1     1     1     0     1     0     8    0
dma256     256        6    0        6     1     1     0     1     0     8    0
dma64       64      259    0      259     1     1     0     1     0     8    0
dma32       32        7    0        7     1     1     0     1     0     8    0
dma16       16       17    0       17     1     1     0     1     0     8    0
aobjpl      64        1    0        0     1     0     1     1     0     8    0
uaddrrnd    24      175    0      164     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24      175    0      164     1     0     1     1     0     8    0
vmmpekpl   168     5195    0     5181     1     0     1     1     0     8    0
vmmpepl    168    23631    0    22941    49    15    34    47     0   357    3
vmsppl     264      174    0      164     1     0     1     1     0     8    0
pdppl      4096     356    0      328     5     0     5     5     0     8    0
pvpl        32    69400    0    66705    31     5    26    26     0   265    3
pmappl     192      174    0      164     1     0     1     1     0     8    0
extentpl    40       39    0       25     1     0     1     1     0     8    0
phpool     112      223    0        5     7     0     7     7     0     8    0
ddb> 

Crashes (5):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-openbsd-main 2019/02/15 10:45 openbsd 91a1919492c9 f6f233c0 .config log report syz C
ci-openbsd-main 2019/02/15 17:00 openbsd 91a1919492c9 f6f233c0 .config log report
ci-openbsd-multicore 2019/02/15 16:59 openbsd 64a70754a42c f6f233c0 .config log report
ci-openbsd-multicore 2019/02/15 15:03 openbsd 64a70754a42c f6f233c0 .config log report
ci-openbsd-main 2019/02/15 10:31 openbsd 91a1919492c9 f6f233c0 .config log report
* Struck through repros no longer work on HEAD.