On 16.03.2020 18:14, Tobias Nygren wrote: > Hi, > > Got a new one today. Copied manually: > > panic: kernel diagnostic assertion (opte (& PTE_A | PTE_B)) != PTE_A pmap.c line 4029 > kern_assert() > pmap_sync_pv() > pmap_pp_remove() > uvm_anon_dispose() > uvm_anon_freelst() > amap_wipeout() > uvmspace_free() > exit1() > sys_exit() > syscall() > stopped in (clang) > > Switching back to DEBUG kernel again for now. > > -Tobias > Here is output from syzkaller: [ 291.5523861] panic: kernel diagnostic assertion "(opte & (PTE_A | PTE_P)) != PTE_A" failed: file "/syzkaller/managers/netbsd-kmsan/kernel/sys/arch/x86/x86/pmap.c", line 4029 [ 291.5752322] cpu0: Begin traceback... [ 291.6191783] vpanic() at netbsd:vpanic+0x7c1 sys/kern/subr_prf.c:334 [ 291.7194191] kern_assert() at netbsd:kern_assert+0x214 [ 291.8419305] pmap_sync_pv() at netbsd:pmap_sync_pv+0x1239 sys/arch/x86/x86/pmap.c:4029 [ 291.9644371] pmap_pp_remove() at netbsd:pmap_pp_remove+0x5dd sys/arch/x86/x86/pmap.c:4174 [ 292.0869509] uvm_anon_dispose() at netbsd:uvm_anon_dispose+0x5b4 sys/uvm/uvm_anon.c:136 [ 292.2094780] uvm_anon_freelst() at netbsd:uvm_anon_freelst+0x13a sys/uvm/uvm_anon.c:224 [ 292.3208308] amap_wipeout() at netbsd:amap_wipeout+0x6f1 sys/uvm/uvm_amap.c:778 [ 292.4322049] uvm_unmap_detach() at netbsd:uvm_unmap_detach+0x1dd uvm_map_unreference_amap sys/uvm/uvm_map.c:897 [inline] [ 292.4322049] uvm_unmap_detach() at netbsd:uvm_unmap_detach+0x1dd sys/uvm/uvm_map.c:2361 [ 292.5435854] uvmspace_free() at netbsd:uvmspace_free+0x379 sys/uvm/uvm_map.c:4244 [ 292.6549573] exit1() at netbsd:exit1+0xbfd sys/kern/kern_exit.c:340 [ 292.7663255] exit1() at netbsd:exit1 [ 292.8777034] syscall() at netbsd:syscall+0x35d sy_call sys/sys/syscallvar.h:65 [inline] [ 292.8777034] syscall() at netbsd:syscall+0x35d sy_invoke sys/sys/syscallvar.h:94 [inline] [ 292.8777034] syscall() at netbsd:syscall+0x35d sys/arch/x86/x86/syscall.c:138 [ 292.9111121] --- syscall (number 1) --- https://syzkaller.appspot.com/bug?extid=80cf4850dc1cf29901dc
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