https://bugzilla.kernel.org/show_bug.cgi?id=207541 Bug ID: 207541 Summary: "BUG: stack guard page was hit" when starting a KVM-based VM Product: Virtualization Version: unspecified Kernel Version: 5.6.x, 5.7-rc3 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: blocking Priority: P1 Component: kvm Assignee: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx Reporter: harn-solo@xxxxxx Regression: No Created attachment 288869 --> https://bugzilla.kernel.org/attachment.cgi?id=288869&action=edit dmesg part including call trace Hi, after upgrading the Kernel from 5.4.x to any 5.6.x or even a current RC-kernel of the 5.7 series, I'm unable to start a KVM-based virtual machine. Shortly after passing the ed2k-firmware boot stage the VM hangs and the kernel outputs (see attached file for extended log output): [ 85.108980] BUG: stack guard page was hit at 0000000058db6ab1 (stack is 0000000033777485..00000000bcf1c827) [ 85.118710] kernel stack overflow (double-fault): 0000 [#1] SMP NOPTI [ 85.125141] CPU: 0 PID: 1843 Comm: qemu-system-x86 Not tainted 5.6.8 #1 [ 85.131745] Hardware name: ASUS All Series/X99-E WS/USB 3.1, BIOS 3803 06/26/2018 [ 85.139238] RIP: 0010:pic_update_irq+0x5/0x70 [kvm] [ 85.144111] Code: e2 fb 48 83 c2 18 48 39 d7 45 0f 44 c2 eb ae 31 f6 eb 9f 31 d2 eb cf 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 0f 1f 44 00 00 <53> 48 89 fb 48 83 c7 38 e8 2e ff ff ff 85 c0 79 29 48 8d 7b 18 e8 [ 85.162848] RSP: 0018:ffffc90001dd8000 EFLAGS: 00010246 [ 85.168066] RAX: 0000000000000020 RBX: 0000000000000000 RCX: 0000000000000020 [ 85.175188] RDX: 00000000000000ff RSI: 0000000000000020 RDI: ffff88881a0bf300 [ 85.182313] RBP: 0000000000000005 R08: ffffc90001bad000 R09: ffff88883927e000 [ 85.189437] R10: 0000000000000000 R11: ffff888815f50000 R12: 00000000ffffffff [ 85.196561] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88881a0bf300 [ 85.203688] FS: 00007ffa9582bc40(0000) GS:ffff88884fa00000(0000) knlGS:0000000000000000 [ 85.211762] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.217501] CR2: ffffc90001dd7ff8 CR3: 0000000805b1e002 CR4: 00000000001626f0 This issue is reproducible. I've skipped kernel 5.5 entirely. -- You are receiving this mail because: You are watching the assignee of the bug.
