syzbot


panic: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va ADDR, opte 0x2401

Status: upstream: reported on 2024/05/12 02:45
Reported-by: syzbot+ab2c92eb8bae9c8ba938@syzkaller.appspotmail.com
First crash: 37d, last: 37d

Sample crash report:
panic: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va 0x1b2ca37000, opte 0x2401
Starting stack trace...
panic(ffffffff828f7f44) at panic+0x16f sys/kern/subr_prf.c:229
pmap_remove_ptes(fffffd807eff41f0,fffffd80076346a0,7f800d965100,1b2ca20000,1b2ca60000,0,262dcbab5921cab) at pmap_remove_ptes+0x33e
pmap_do_remove(fffffd807eff41f0,1b2ca20000,1b2ca60000,0) at pmap_do_remove+0x410 sys/arch/amd64/amd64/pmap.c:1896
uvm_unmap_kill_entry_withlock(fffffd8008b96dc0,fffffd8068a93600,0) at uvm_unmap_kill_entry_withlock+0x1b1 sys/uvm/uvm_map.c:1897
uvm_map_teardown(fffffd8008b96dc0) at uvm_map_teardown+0x1c7 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline]
uvm_map_teardown(fffffd8008b96dc0) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2534
uvmspace_free(fffffd8008b96dc0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461
reaper(ffff80002a148cd8) at reaper+0x197 sys/kern/kern_exit.c:463
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
2024/05/12 02:44 openbsd 73556a19205d 9026e142 .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 0x2401
* Struck through repros no longer work on HEAD.