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panic: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va ADDR, opte ADDR (5)

Status: upstream: reported on 2025/11/18 18:57
Reported-by: syzbot+264af07a1b4136a89b80@syzkaller.appspotmail.com
First crash: 7d09h, last: 4h23m
Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd panic: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va ADDR, opte ADDR (3) 2 3 1115d 1140d 0/3 auto-obsoleted due to no activity on 2023/02/04 04:28
openbsd panic: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va ADDR, opte ADDR (2) 2 1 1292d 1292d 0/3 auto-closed as invalid on 2022/08/11 22:14
openbsd panic: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va ADDR, opte ADDR (4) 2 65 459d 632d 0/3 auto-obsoleted due to no activity on 2024/10/13 01:07
openbsd panic: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va ADDR, opte ADDR 2 3 1385d 1435d 0/3 auto-closed as invalid on 2022/05/10 04:49

Sample crash report:
panic: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va 0x798a4ca16000, opte 0xffffffffffffffff
Starting stack trace...
panic(ffffffff834341d5) at panic+0x1d0 sys/kern/subr_prf.c:229
pmap_remove_pte(fffffd807746d200,fffffd800804bf98,7fbcc5265000,798a4ca00000,798a4cadc000,0) at pmap_remove_pte
pmap_do_remove(fffffd807746d200,798a4c3dc000,798a4cadc000,0) at pmap_do_remove+0x589 sys/arch/amd64/amd64/pmap.c:1920
uvm_unmap_kill_entry_withlock(fffffd806cb12b88,fffffd806cadf4c8,0) at uvm_unmap_kill_entry_withlock+0x269 sys/uvm/uvm_map.c:1863
uvm_map_teardown(fffffd806cb12b88) at uvm_map_teardown+0x117 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:-1 [inline]
uvm_map_teardown(fffffd806cb12b88) at uvm_map_teardown+0x117 sys/uvm/uvm_map.c:2486
exit1(ffff80003afecfb0,0,0,1) at exit1+0x6fc sys/kern/kern_exit.c:260
sys_exit(ffff80003afecfb0,ffff80003c409a00,ffff80003c409950) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80003c409a00) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c409a00) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:765
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x798a4cbdba80, count: 248
End of stack trace.


Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/11/25 23:46 openbsd db1d82999ce6 64219f15 .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 ADDR
2025/11/20 18:20 openbsd 5aa51b7bb462 2cc4c24a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va ADDR, opte ADDR
2025/11/19 11:23 openbsd 809b9478d116 82d7b894 .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 ADDR
2025/11/18 18:56 openbsd ae8b598acb72 ef766cd7 .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 ADDR
* Struck through repros no longer work on HEAD.