syzbot


panic: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va ADDR, opte 0x3edff

Status: upstream: reported on 2024/07/14 17:15
Reported-by: syzbot+3d909086edcb6137cf06@syzkaller.appspotmail.com
First crash: 55d, last: 55d

Sample crash report:
panic: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va 0x1b2de60000, opte 0x3edff
Starting stack trace...
panic(ffffffff8306b6fa) at panic+0x1d0 sys/kern/subr_prf.c:229
pmap_remove_pte(fffffd8069d9a5e0,fffffd800818af60,7f800d96f300,1b2de60000,1b2e000000,0) at pmap_remove_pte
pmap_do_remove(fffffd8069d9a5e0,1b2de60000,1b2e220000,0) at pmap_do_remove+0x533 sys/arch/amd64/amd64/pmap.c:1909
uvm_unmap_kill_entry_withlock(fffffd80749bd6f0,fffffd8062ba6400,0) at uvm_unmap_kill_entry_withlock+0x274 sys/uvm/uvm_map.c:1883
uvm_map_teardown(fffffd80749bd6f0) at uvm_map_teardown+0x267 sys/uvm/uvm_map.c:2520
uvmspace_free(fffffd80749bd6f0) at uvmspace_free+0xe8 sys/uvm/uvm_map.c:3447
reaper(ffff800029fd91c0) at reaper+0x25b sys/kern/kern_exit.c:480
end trace frame: 0x0, count: 250
End of stack trace.

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/07/14 17:14 openbsd a6de02d933e6 eaeb5c15 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va ADDR, opte 0x3edff
* Struck through repros no longer work on HEAD.