syzbot


protection_fault: malloc (3)

Status: upstream: reported on 2026/07/13 13:05
Reported-by: syzbot+a1502e2bc577116c330b@syzkaller.appspotmail.com
First crash: 4d13h, last: 19m
Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd protection_fault: malloc (2) -1 1 304d 304d 0/4 auto-obsoleted due to no activity on 2025/12/15 04:56
openbsd protection_fault: malloc -1 1 522d 522d 0/4 auto-obsoleted due to no activity on 2025/05/11 04:12

Sample crash report:
kernel: protection fault trap, code=0
Stopped at      malloc+0x855:   movq    0x8(%rbx),%r14
ddb{1}> 
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
the kernel did not panic
ddb{1}> show kasan
No such command
ddb{1}> trace
malloc(8,62,a) at malloc+0x855 sys/kern/kern_malloc.c:294
amap_splitref(fffff6806cefa9a8,fffff6806cefa078,1000) at amap_splitref+0x130 amap_pp_establish sys/uvm/uvm_amap.c:856 [inline]
amap_splitref(fffff6806cefa9a8,fffff6806cefa078,1000) at amap_splitref+0x130 sys/uvm/uvm_amap.c:837
uvm_map_splitentry(fffff6806cefdb88,fffff6806cefa938,fffff6806cefa008,447e0d24000) at uvm_map_splitentry+0x176 sys/uvm/uvm_map.c:2604
uvm_map_immutable(fffff6806cefdb88,447e0d23000,447e0d24000,0) at uvm_map_immutable+0x3e9 uvm_map_clip_end sys/uvm/uvm_map.c:-1 [inline]
uvm_map_immutable(fffff6806cefdb88,447e0d23000,447e0d24000,0) at uvm_map_immutable+0x3e9 sys/uvm/uvm_map.c:4136
vmcmd_mutable(ffff80003679afb8,ffff80003c3d3be0) at vmcmd_mutable+0x88 sys/kern/exec_subr.c:311
exec_process_vmcmds(ffff80003679afb8,ffff80003c3d3a90) at exec_process_vmcmds+0xef sys/kern/exec_subr.c:139
exec_elf_fixup(ffff80003679afb8,ffff80003c3d3a90) at exec_elf_fixup+0x149 sys/kern/exec_elf.c:969
sys_execve(ffff80003679afb8,ffff80003c3d3f50,ffff80003c3d3ea0) at sys_execve+0x1e4c sys/kern/kern_exec.c:745
syscall(ffff80003c3d3f50) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c3d3f50) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7a8043f2ab10, count: -10
ddb{1}> show registers
rdi                0xf39133c1a34562e
rsi                                0
rbp               0xffff80003c3d3630
rbx                0xf39133c1a34562e
rdx                                0
rcx               0xffff80003679afb8
rax               0xffff80002999dff0
r8                            0x1000    __ALIGN_SIZE
r9                        0x6d99ab69
r10               0x5c9408d72432bdb5
r11               0x263fec0decc905c1
r12                                0
r13               0xffffffff83a217b0    kmemstats+0x1880
r14                        0xa30c333    __kernel_phys_end+0x670c333
r15                0xf39133c1a34562e
rip               0xffffffff81c49aa5    malloc+0x855
cs                               0x8
rflags                       0x10206    __ALIGN_SIZE+0xf206
rsp               0xffff80003c3d3570
ss                              0x10
malloc+0x855:   movq    0x8(%rbx),%r14
ddb{1}> show proc
PROC (ndp) tid=444753 pid=33888 tcnt=1 stat=onproc
    flags process=1006<EXEC,INEXEC,SINGLEEXIT> proc=0
    runpri=59, usrpri=59, slppri=32, nice=20
    wchan=0x0, wmesg=, ps_single=0xffff80003679afb8 scnt=0 ecnt=0
    forw=0xffffffffffffffff, list=0xffff80003679ba18,0xffffffff83b44398
    process=0xffff800034f97510 user=0xffff80003c3cf000, vmspace=0xfffff6806cefdb88
    estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb{1}> ps
   PID     TID   PPID   UID  S      PRLAGS     PFLAGS WAIT      COMMAND
*33888  444753  70147     0  7      0x1006          0           ndp
 70147  268341  84924     0  3    0x100002       0x88 sigsusp   sh
 68431  363689  84185     0  2           0          0           syz-executor
 68431  455498  84185     0  2           0  0x4000000           syz-executor
  9677  203077  18205     0  7           0          0           syz-executor
  9677  457943  18205     0  2           0  0x4000000           syz-executor
 38399  350371  19420     0  2           0          0           syz-executor
 38399  308578  19420     0  3           0  0x4000080 fsleep    syz-executor
 31634  277383  68939     0  2           0          0           syz-executor
 31634  401939  68939     0  3           0  0x4000080 fsleep    syz-executor
 87208  380605  33523     0  2           0          0           syz-executor
 87208  448962  33523     0  3           0  0x4000080 fifor     syz-executor
 60188  111451  55156     0  2   0x1000000          0           syz-executor
 60188   64827  55156     0  3   0x1000000  0x4000080 fsleep    syz-executor
 60188  438858  55156     0  3   0x1000000  0x4000080 fsleep    syz-executor
 60188   17627  55156     0  3   0x1000000  0x4000080 fsleep    syz-executor
 42019  429050  82323     0  3           0       0x80 nanoslp   syz-executor
 42019  349994  82323     0  3           0  0x4000080 kqread    syz-executor
 42019  306457  82323     0  3           0  0x4000080 fsleep    syz-executor
 33523  185592  86930     0  3         0x2       0x80 nanoslp   syz-executor
 18205   86807  86930     0  3         0x2       0x80 nanoslp   syz-executor
 82323  396916  86930     0  3         0x2       0x80 nanoslp   syz-executor
 68939  403690  86930     0  3         0x2       0x80 nanoslp   syz-executor
 84924  143169  86930     0  3         0x2       0x80 wait      syz-executor
 84185  145423  86930     0  3         0x2       0x80 nanoslp   syz-executor
 19420   65448  86930     0  3         0x2       0x80 nanoslp   syz-executor
 55156  454874  86930     0  3         0x2       0x80 nanoslp   syz-executor
 86930  445258  85444     0  3         0x2       0x80 kqread    syz-executor
 85444  506786  97072     0  3    0x100002       0x88 sigsusp   ksh
 97072  147394  33334     0  3        0x10       0x88 kqread    sshd-session
 33334  148583  14839     0  3        0x12       0x80 kqread    sshd-session
 93223   18126      1     0  3    0x100003       0x80 ttyin     getty
 14839   80267      1     0  3           0       0x88 kqread    sshd
 60253  260181   9725    74  3   0x1100012       0x80 bpf       pflogd
  9725  123605      1     0  3           0       0x80 sbwait    pflogd
 56345  133645  78628    73  3   0x1100010       0x80 kqread    syslogd
 78628  328946      1     0  3    0x100002       0x80 sbwait    syslogd
 97207   28702      1     0  3    0x100000       0x80 kqread    resolvd
 14307  245012  78534    77  3    0x100012       0x80 kqread    dhcpleased
 67533  216866  78534    77  3    0x100012       0x80 kqread    dhcpleased
 78534  126863      1     0  3           0       0x80 kqread    dhcpleased
 40706  225823      0     0  3     0x14000      0x200 bored     smr
 38724  433223      0     0  2     0x14000      0x200           zerothread
 60382   61472      0     0  3     0x14000      0x200 aiodoned  aiodoned
 42365  392288      0     0  3     0x14000      0x200 syncer    update
  5575  272105      0     0  3     0x14000      0x200 cleaner   cleaner
 84647  471744      0     0  3     0x14000      0x200 reaper    reaper
 21886  329104      0     0  3     0x14000      0x200 pgdaemon  pagedaemon
 84159  403373      0     0  3     0x14000      0x200 bored     viomb
 93684  513905      0     0  3     0x14000 0x40000200 acpi0     acpi0
 75363  425958      0     0  3     0x14000 0x40000200           idle1
 38417  317143      0     0  3     0x14000      0x200 bored     softnet1
 54432  408680      0     0  3     0x14000      0x200 bored     softnet0
 29376  489443      0     0  3     0x14000      0x200 smrbar    systqmp
 25946  131433      0     0  3     0x14000      0x200 bored     systq
 56649  522056      0     0  3     0x14000      0x200 tmoslp    softclockmp
 98543  282577      0     0  3     0x14000 0x40000200 tmoslp    softclock
 45538  373219      0     0  3     0x14000 0x40000200           idle0
     1  354316      0     0  3         0x2       0x80 wait      init
     0       0     -1     0  3     0x10000      0x200 scheduler swapper
ddb{1}> show all locks
CPU 1:
exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_malloc.c:96 r = 0 (0xffffffff8392daa8)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  mtx_enter+0x4b4 sys/kern/kern_lock.c:487
#2  malloc+0x2ef sys/kern/kern_malloc.c:200
#3  amap_splitref+0x130 amap_pp_establish sys/uvm/uvm_amap.c:856 [inline]
#3  amap_splitref+0x130 sys/uvm/uvm_amap.c:837
#4  uvm_map_splitentry+0x176 sys/uvm/uvm_map.c:2604
#5  uvm_map_immutable+0x3e9 uvm_map_clip_end sys/uvm/uvm_map.c:-1 [inline]
#5  uvm_map_immutable+0x3e9 sys/uvm/uvm_map.c:4136
#6  vmcmd_mutable+0x88 sys/kern/exec_subr.c:311
#7  exec_process_vmcmds+0xef sys/kern/exec_subr.c:139
#8  exec_elf_fixup+0x149 sys/kern/exec_elf.c:969
#9  sys_execve+0x1e4c sys/kern/kern_exec.c:745
#10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#11 Xsyscall+0x128
Process 33888 (ndp) thread 0xffff80003679afb8 (444753)
exclusive rwlock amaplk r = 0 (0xfffff68069b223a8)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2  amap_splitref+0x95 sys/uvm/uvm_amap.c:832
#3  uvm_map_splitentry+0x176 sys/uvm/uvm_map.c:2604
#4  uvm_map_immutable+0x3e9 uvm_map_clip_end sys/uvm/uvm_map.c:-1 [inline]
#4  uvm_map_immutable+0x3e9 sys/uvm/uvm_map.c:4136
#5  vmcmd_mutable+0x88 sys/kern/exec_subr.c:311
#6  exec_process_vmcmds+0xef sys/kern/exec_subr.c:139
#7  exec_elf_fixup+0x149 sys/kern/exec_elf.c:969
#8  sys_execve+0x1e4c sys/kern/kern_exec.c:745
#9  syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#9  syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#10 Xsyscall+0x128
exclusive rwlock vmmaplk r = 0 (0xfffff6806cefdc88)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2  vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5170
#3  uvm_map_immutable+0xb0 sys/uvm/uvm_map.c:4121
#4  vmcmd_mutable+0x88 sys/kern/exec_subr.c:311
#5  exec_process_vmcmds+0xef sys/kern/exec_subr.c:139
#6  exec_elf_fixup+0x149 sys/kern/exec_elf.c:969
#7  sys_execve+0x1e4c sys/kern/kern_exec.c:745
#8  syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8  syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#9  Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839fcdc0)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline]
#1  syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783
#2  Xsyscall+0x128
exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_malloc.c:96 r = 0 (0xffffffff8392daa8)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  mtx_enter+0x4b4 sys/kern/kern_lock.c:487
#2  malloc+0x2ef sys/kern/kern_malloc.c:200
#3  amap_splitref+0x130 amap_pp_establish sys/uvm/uvm_amap.c:856 [inline]
#3  amap_splitref+0x130 sys/uvm/uvm_amap.c:837
#4  uvm_map_splitentry+0x176 sys/uvm/uvm_map.c:2604
#5  uvm_map_immutable+0x3e9 uvm_map_clip_end sys/uvm/uvm_map.c:-1 [inline]
#5  uvm_map_immutable+0x3e9 sys/uvm/uvm_map.c:4136
#6  vmcmd_mutable+0x88 sys/kern/exec_subr.c:311
#7  exec_process_vmcmds+0xef sys/kern/exec_subr.c:139
#8  exec_elf_fixup+0x149 sys/kern/exec_elf.c:969
#9  sys_execve+0x1e4c sys/kern/kern_exec.c:745
#10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#11 Xsyscall+0x128
Process 29376 (systqmp) thread 0xffff800045ffe530 (489443)
shared rwlock systqmp r = 0 (0xffffffff839d7028)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  taskq_thread+0x12a sys/kern/kern_task.c:442
#2  proc_trampoline+0x10
ddb{1}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 11059  12087K   12225K 166960K     12245        0
            pcb    17     16K      21K 166960K       164        0
         rtable   235      6K       6K 166960K       345        0
             pf    37     18K      22K 166960K        52        0
         ifaddr    43      7K       7K 166960K        45        0
        ifgroup    55      2K       2K 166960K        55        0
         sysctl     1      1K       9K 166960K         5        0
       counters    70     37K      37K 166960K        70        0
       ioctlops     0      0K       4K 166960K      1493        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1358     85K      86K 166960K      1451        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     2      1K       5K 166960K         3        0
         VM map     2      1K       1K 166960K         2        0
            sem     2      0K       0K 166960K         2        0
        dirhash    12      2K       2K 166960K        12        0
           ACPI  1734    201K     291K 166960K     11964        0
      file desc    19     69K      85K 166960K       157        0
           proc    70    115K     164K 166960K       555        0
        subproc    72      4K       4K 166960K        72        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
       in_multi    99      7K       7K 166960K        99        0
    ether_multi     1      0K       0K 166960K         1        0
            mrt     0      0K       0K 166960K         2        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys    49    228K     228K 166960K        49        0
           exec     1      0K       1K 166960K       385        0
   fusefs mount     1     32K      32K 166960K         1        0
            tdb     3      0K       0K 166960K         3        0
        VM swap     8     62K      64K 166960K        10        0
       UVM amap   241    160K     166K 166960K      3200        0
       UVM aobj     4      2K       2K 166960K         4        0
     pinsyscall    44     88K     101K 166960K      1315        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
            NDP    28      2K       2K 166960K        28        0
           temp    36   9114K    9130K 166960K      3980        0
         kqueue    16     22K      24K 166960K        36        0
      SYN cache     2     16K      16K 166960K         2        0
ddb{1}> show all pools
Name      Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache    128       28    0        0     1     0     1     1     0     8    0
rtpcb      120       35    0       31     1     0     1     1     0     8    0
rtentry    176      110    0        1     5     0     5     5     0     8    0
unpcb      144       58    0       35     1     0     1     1     0     8    0
syncache   336        4    0        4     1     0     1     1     0     8    1
tcpcb      736       13    0        9     1     0     1     1     0     8    0
arp        136       18    0        0     1     0     1     1     0     8    0
inpcb      328      216    0      206    12     0    12    12     0     8   11
nd6        152       23    0        0     1     0     1     1     0     8    0
kcovpl      48        8    0        0     1     0     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
pfanchor   1288       1    0        0     1     0     1     1     0     8    0
pfstitem    24       19    0        0     1     0     1     1     0     8    0
pfstkey    128       19    0        0     1     0     1     1     0     8    0
pfstate    448       19    0        0     3     0     3     3     0     8    0
pfrule     1360      23    0       17     2     1     1     2     0     8    0
art_heap8  4096       1    0        0     1     0     1     1     0     8    0
art_heap4  256      452    0        0    29     0    29    29     0     8    0
art_table   40      453    0        0     5     0     5     5     0     8    0
art_node    32      110    0       10     1     0     1     1     0     8    0
shmpl      112        1    0        0     1     0     1     1     0     8    0
dirhash    1024      17    0        0     3     0     3     3     0     8    0
dino2pl    256     1609    0      141    93     0    93    93     0     8    0
ffsino     296     1609    0      141   114     0   114   114     0     8    0
nchpl      144     1832    0      128    64     0    64    64     0     8    0
vnodes     216     1775    0        0    99     0    99    99     0     8    0
namei      1024    5666    0     5665     1     0     1     1     0     8    0
percpumem   16       51    0        0     1     0     1     1     0     8    0
kstatmem   264       27    0        0     2     0     2     2     0     8    0
scxspl     216     6208    0     6208     4     2     2     3     1     8    2
plimitpl   152       32    0       15     1     0     1     1     0     8    0
sigapl     424      475    0      426     6     0     6     6     0     8    0
knotepl    120       99    0        0     3     0     3     3     0     8    0
kqueuepl   224       65    0       53     3     0     3     3     0     8    2
pipepl     344      127    0      100     3     0     3     3     0     8    0
fdescpl    528      459    0      426     3     0     3     3     0     8    0
filepl     160     1908    0     1682    15     0    15    15     0     8    4
lockfpl    104       11    0        8     1     0     1     1     0     8    0
lockfspl    48        7    0        4     1     0     1     1     0     8    0
sessionpl  144       26    0       17     1     0     1     1     0     8    0
pgrppl      48       34    0       17     1     0     1     1     0     8    0
ucredpl    104      102    0       89     1     0     1     1     0     8    0
zombiepl   144      426    0      426     1     0     1     1     0     8    1
processpl  1232     475    0      426     5     0     5     5     0     8    0
procpl     664      517    0      458     6     0     6     6     0     8    0
sockpl     752      311    0      274    17     0    17    17     0     8   13
mcl8k      8192       1    0        0     1     0     1     1     0     8    0
mcl4k      4096     117    0        0    15     0    15    15     0     8    0
mcl2k      2048      12    0        0     2     0     2     2     0     8    0
mextrefs    64        9    0        0     1     0     1     1     0     8    0
mtagpl      96        3    0        0     1     0     1     1     0     8    0
mbufpl     256      121    0        0     8     0     8     8     0     8    0
bufpl      272     2306    0      105   147     0   147   147     0     8    0
anonpl      32     3836    0        0    31     0    31    31     0   247    0
amapchunkpl 152    8932    0     8427    22     1    21    21     0   158    1
amappl16   200     1919    0     1900     5     0     5     5     0     8    3
amappl15   192        7    0        7     1     0     1     1     0     8    1
amappl14   184      448    0      445     1     0     1     1     0     8    0
amappl13   176      168    0      155     1     0     1     1     0     8    0
amappl12   168      711    0      680     2     0     2     2     0     8    0
amappl11   160       24    0       24     2     1     1     1     0     8    1
amappl10   152       65    0       51     1     0     1     1     0     8    0
amappl9    144      272    0      272     1     0     1     1     0     8    1
amappl8    136      119    0      117     1     0     1     1     0     8    0
amappl7    128      146    0      133     1     0     1     1     0     8    0
amappl6    120      161    0      158     1     0     1     1     0     8    0
amappl5    112      115    0      105     1     0     1     1     0     8    0
amappl4    104      305    0      287     1     0     1     1     0     8    0
amappl3     96     1577    0     1455     4     0     4     4     0     8    0
amappl2     88      534    0      476     2     0     2     2     0     8    0
amappl1     80    10551    0     9937    14     0    14    14     0     8    0
amappl      88     2476    0     2307     4     0     4     4     0    92    0
uvmvnodes   80       98    0        0     2     0     2     2     0     8    0
dma4096    4096       1    0        1     1     1     0     1     0     8    0
dma1024    1024       2    0        1     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        8    0        8     2     1     1     1     0     8    1
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        3    0        0     1     0     1     1     0     8    0
uaddrrnd    24      459    0      426     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24      459    0      426     1     0     1     1     0     8    0
vmmpekpl   168     5878    0     5846     2     0     2     2     0     8    0
vmmpepl    168    39140    0    37206    87     0    87    87     0   357    0
vmsppl     488      458    0      426     5     0     5     5     0     8    0
rwobjpl     80    14762    0    13720    23     0    23    23     0     8    0
pdppl      4096     925    0      852    93    12    81    81     0     8    8
pvpl        32     9356    0        0    76     0    76    76     0   265    0
pmappl     256      458    0      426     3     0     3     3     0     8    0
extentpl    40       46    0       28     1     0     1     1     0     8    0
phpool     112      406    0       15    12     0    12    12     0     8    0
ddb{1}> machine ddbcpu 0
Stopped at      x86_ipi_db+0x27:        addq    $0x8,%rsp
ddb{0}> trace
x86_ipi_db(ffffffff83922ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xb kd_curproc sys/dev/kcov.c:580 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xb sys/dev/kcov.c:153
softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
end of kernel
end trace frame: 0x76b23230e4e0, count: -7
ddb{0}> machine ddbcpu 1
Stopped at      malloc+0x855:   movq    0x8(%rbx),%r14
ddb{1}> trace
malloc(8,62,a) at malloc+0x855 sys/kern/kern_malloc.c:294
amap_splitref(fffff6806cefa9a8,fffff6806cefa078,1000) at amap_splitref+0x130 amap_pp_establish sys/uvm/uvm_amap.c:856 [inline]
amap_splitref(fffff6806cefa9a8,fffff6806cefa078,1000) at amap_splitref+0x130 sys/uvm/uvm_amap.c:837
uvm_map_splitentry(fffff6806cefdb88,fffff6806cefa938,fffff6806cefa008,447e0d24000) at uvm_map_splitentry+0x176 sys/uvm/uvm_map.c:2604
uvm_map_immutable(fffff6806cefdb88,447e0d23000,447e0d24000,0) at uvm_map_immutable+0x3e9 uvm_map_clip_end sys/uvm/uvm_map.c:-1 [inline]
uvm_map_immutable(fffff6806cefdb88,447e0d23000,447e0d24000,0) at uvm_map_immutable+0x3e9 sys/uvm/uvm_map.c:4136
vmcmd_mutable(ffff80003679afb8,ffff80003c3d3be0) at vmcmd_mutable+0x88 sys/kern/exec_subr.c:311
exec_process_vmcmds(ffff80003679afb8,ffff80003c3d3a90) at exec_process_vmcmds+0xef sys/kern/exec_subr.c:139
exec_elf_fixup(ffff80003679afb8,ffff80003c3d3a90) at exec_elf_fixup+0x149 sys/kern/exec_elf.c:969
sys_execve(ffff80003679afb8,ffff80003c3d3f50,ffff80003c3d3ea0) at sys_execve+0x1e4c sys/kern/kern_exec.c:745
syscall(ffff80003c3d3f50) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c3d3f50) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7a8043f2ab10, count: -10

Crashes (146):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/07/18 01:52 openbsd 97f4e10dc0be 72524a66 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore protection_fault: malloc
2026/07/17 23:30 openbsd 97f4e10dc0be 72524a66 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/17 22:08 openbsd 97f4e10dc0be 72524a66 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore protection_fault: malloc
2026/07/17 19:36 openbsd 94b919120046 7f27c57a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid protection_fault: malloc
2026/07/17 19:19 openbsd 94b919120046 7f27c57a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/17 18:11 openbsd 94b919120046 7f27c57a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/17 16:47 openbsd 94b919120046 7f27c57a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/17 15:47 openbsd 94b919120046 7f27c57a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore protection_fault: malloc
2026/07/17 13:32 openbsd 94b919120046 7f27c57a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid protection_fault: malloc
2026/07/17 11:05 openbsd 94b919120046 7f27c57a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid protection_fault: malloc
2026/07/17 09:25 openbsd 94b919120046 7f27c57a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/17 08:09 openbsd 5f0b8e1b9eb7 6ca2b51a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/17 07:01 openbsd 5f0b8e1b9eb7 6ca2b51a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore protection_fault: malloc
2026/07/17 05:05 openbsd 5f0b8e1b9eb7 6ca2b51a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid protection_fault: malloc
2026/07/17 04:57 openbsd 5f0b8e1b9eb7 6ca2b51a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid protection_fault: malloc
2026/07/17 02:36 openbsd 5f0b8e1b9eb7 6ca2b51a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid protection_fault: malloc
2026/07/17 01:14 openbsd 5f0b8e1b9eb7 6ca2b51a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid protection_fault: malloc
2026/07/17 00:13 openbsd 5f0b8e1b9eb7 6ca2b51a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid protection_fault: malloc
2026/07/16 22:52 openbsd 5f0b8e1b9eb7 6ca2b51a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid protection_fault: malloc
2026/07/16 21:35 openbsd 5f0b8e1b9eb7 6ca2b51a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/16 19:13 openbsd 3cb5d360b276 851bd571 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid protection_fault: malloc
2026/07/16 18:03 openbsd 3cb5d360b276 851bd571 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/16 16:00 openbsd 3cb5d360b276 851bd571 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid protection_fault: malloc
2026/07/16 12:59 openbsd 3cb5d360b276 851bd571 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/16 10:23 openbsd 3cb5d360b276 851bd571 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore protection_fault: malloc
2026/07/16 05:25 openbsd 5b4a77182f82 27a8bd60 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore protection_fault: malloc
2026/07/16 03:17 openbsd 5b4a77182f82 27a8bd60 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore protection_fault: malloc
2026/07/16 02:03 openbsd 5b4a77182f82 27a8bd60 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid protection_fault: malloc
2026/07/16 00:16 openbsd 5b4a77182f82 27a8bd60 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore protection_fault: malloc
2026/07/15 20:50 openbsd 5b4a77182f82 27a8bd60 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid protection_fault: malloc
2026/07/15 19:17 openbsd af68cf7bb0f1 a4ed0f4f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/15 17:47 openbsd af68cf7bb0f1 a4ed0f4f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/15 17:09 openbsd af68cf7bb0f1 a4ed0f4f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/15 16:06 openbsd af68cf7bb0f1 a4ed0f4f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/15 15:00 openbsd af68cf7bb0f1 a4ed0f4f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/15 14:08 openbsd af68cf7bb0f1 a4ed0f4f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/15 12:57 openbsd af68cf7bb0f1 a4ed0f4f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/15 11:26 openbsd af68cf7bb0f1 a4ed0f4f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/15 11:25 openbsd af68cf7bb0f1 a4ed0f4f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/15 11:25 openbsd af68cf7bb0f1 a4ed0f4f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/15 11:24 openbsd af68cf7bb0f1 a4ed0f4f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/15 11:24 openbsd af68cf7bb0f1 a4ed0f4f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/15 11:18 openbsd af68cf7bb0f1 a4ed0f4f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/15 11:18 openbsd af68cf7bb0f1 a4ed0f4f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/15 06:48 openbsd c070732167b6 2130f682 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/15 06:40 openbsd c070732167b6 2130f682 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/15 06:37 openbsd c070732167b6 2130f682 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: malloc
2026/07/13 13:04 openbsd 663dfdac4969 a870962e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid protection_fault: malloc
* Struck through repros no longer work on HEAD.