On Fri, Jun 16, 2023, Hamza Mahfooz wrote: > I am seeing the following page-fault on the latest stable kernel: What makes you think this is KVM related? I don't see anything KVM related in the splat. The !PRESENT #PF is coming from aio_read(), not from KVM. The ?kvm_arch_vcpu_put line is just mispeculation from the unwinder. > BUG: unable to handle page fault for address: ffffb4ff0cd20034 > #PF: supervisor read access in kernel mode > #PF: error_code(0x0000) - not-present page > PGD 10002a067 P4D 10002a067 PUD 0 > Oops: 0000 [#1] PREEMPT SMP NOPTI > CPU: 7 PID: 2675 Comm: CPU 7/KVM Not tainted 6.3.8-arch1-1 #1 > a1d299e746aebdb27c523dd3bd94aba6f54915c7 > Hardware name: ASUS System Product Name/ProArt X670E-CREATOR WIFI, BIOS 1303 > 04/27/2023 > RIP: 0010:try_grab_folio+0x14f/0x370 > Code: 83 f8 04 75 6f 44 89 ee 4c 89 e7 e8 6b bc 0b 00 84 c0 74 60 4c 8b 63 > 08 41 f6 c4 01 0f 85 b0 01 00 00 0f 1f 44 00 00 49 89 dc <41> 8b 44 24 34 85 > c0 0f 88 f8 00 00 00 41 8b 44 24 34 85 c0 74 58 > RSP: 0018:ffff9fa98504b948 EFLAGS: 00010086 > RAX: 0000000000000002 RBX: fffff4ff0cd21480 RCX: 0000000000000000 > RDX: 0000000000000003 RSI: 0000000000000001 RDI: fffff4ff0cd21480 > RBP: 0000000000000000 R08: ffff8b2edb510980 R09: 00007f5624253000 > R10: 80000003348008e7 R11: 00007f5624253000 R12: ffffb4ff0cd20000 > R13: 0000000000000001 R14: 0000000000000003 R15: 0000000000000001 > FS: 00007f548a7fc6c0(0000) GS:ffff8b35f83c0000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: ffffb4ff0cd20034 CR3: 0000000113e70000 CR4: 0000000000750ee0 > PKRU: 55555554 > Call Trace: > <TASK> > ? __die+0x23/0x70 > ? page_fault_oops+0x171/0x4e0 > ? exc_page_fault+0x172/0x180 > ? asm_exc_page_fault+0x26/0x30 > ? try_grab_folio+0x14f/0x370 > internal_get_user_pages_fast+0x883/0x1150 > __iov_iter_get_pages_alloc+0xdd/0x780 > ? kmem_cache_alloc+0x16f/0x330 > ? bio_associate_blkg_from_css+0xcd/0x340 > iov_iter_get_pages+0x1d/0x40 > bio_iov_iter_get_pages+0xa1/0x480 > __blkdev_direct_IO_async+0xc5/0x1b0 > blkdev_read_iter+0x127/0x1d0 > aio_read+0x132/0x210 > ? io_submit_one+0x46a/0x8b0 > io_submit_one+0x46a/0x8b0 > ? kvm_arch_vcpu_put+0x128/0x190 [kvm > 711ceda1c40511ce22d1f99f4e9e574def76b25e] > ? kvm_arch_vcpu_ioctl_run+0x579/0x1770 [kvm > 711ceda1c40511ce22d1f99f4e9e574def76b25e] > __x64_sys_io_submit+0xad/0x190 > do_syscall_64+0x5d/0x90 > ? __x64_sys_ioctl+0xac/0xd0 > ? syscall_exit_to_user_mode+0x1b/0x40 > ? do_syscall_64+0x6c/0x90 > ? syscall_exit_to_user_mode+0x1b/0x40 > ? do_syscall_64+0x6c/0x90 > ? syscall_exit_to_user_mode+0x1b/0x40 > ? do_syscall_64+0x6c/0x90 > ? syscall_exit_to_user_mode+0x1b/0x40 > ? do_syscall_64+0x6c/0x90 > ? do_syscall_64+0x6c/0x90 > entry_SYSCALL_64_after_hwframe+0x72/0xdc > RIP: 0033:0x7f57ac0912ed > Code: 5d c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 > 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff > 73 01 c3 48 8b 0d 3b 7a 0d 00 f7 d8 64 89 01 48 > RSP: 002b:00007f5427ab97b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 > RAX: ffffffffffffffda RBX: 00007f548a7fc1d0 RCX: 00007f57ac0912ed > RDX: 00007f5427ab9800 RSI: 0000000000000001 RDI: 00007f57a9d24000 > RBP: 00007f57a9d24000 R08: 0000000000000001 R09: 0000000000000001 > R10: 00007f54740044f0 R11: 0000000000000246 R12: 0000000000000001 > R13: 0000000000000004 R14: 00007f5427ab9800 R15: 000000000000000e
