------------[ cut here ]------------ kernel BUG at mm/kmsan/kmsan.c:729! invalid opcode: 0000 [#1] SMP CPU: 0 PID: 3764 Comm: udevd Not tainted 5.0.0+ #16 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kmsan_internal_check_memory+0xb84/0xbb0 mm/kmsan/kmsan.c:727 Code: 65 8b 34 25 04 90 03 00 65 48 8b 14 25 90 0d 04 00 48 c7 c7 6c 6c 81 8b 31 c0 e8 b7 fd 79 ff 0f 0b 0f 0b e8 8e 22 56 ff 0f 0b <0f> 0b e8 75 d0 79 ff 85 c0 75 1f 65 8b 34 25 04 90 03 00 65 48 8b RSP: 0018:ffff88810da3fa60 EFLAGS: 00010046 RAX: 0000000000000002 RBX: 00000000e3a000b3 RCX: ffff888000000000 RDX: 000007ffffffffff RSI: 0000000000000004 RDI: ffff88810da3fc08 RBP: ffff88810da3fb10 R08: ffff88810da3fc08 R09: ffff88818da3fc08 R10: ffff88810da8fc08 R11: ffffffff8229a110 R12: 0000000000000004 R13: 0000000000000004 R14: 0000000000000282 R15: 0000000000000000 FS: 00007f6d47f067a0(0000) GS:ffff88812fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6d47f0d000 CR3: 000000010d901000 CR4: 00000000001406f0 Call Trace: kmsan_check_memory+0xd/0x10 mm/kmsan/kmsan.c:737 ep_send_events_proc+0xa8b/0x1640 fs/eventpoll.c:1675 ep_scan_ready_list+0x366/0xe80 fs/eventpoll.c:708 ep_send_events fs/eventpoll.c:1715 [inline] ep_poll fs/eventpoll.c:1852 [inline] do_epoll_wait+0xd00/0x1990 fs/eventpoll.c:2216 __do_sys_epoll_wait fs/eventpoll.c:2226 [inline] __se_sys_epoll_wait+0xb3/0xe0 fs/eventpoll.c:2223 __x64_sys_epoll_wait+0x56/0x70 fs/eventpoll.c:2223 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x7f6d4761a943 Code: 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 83 3d b5 dc 2a 00 00 75 13 49 89 ca b8 e8 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 3b c4 00 00 48 89 04 24 RSP: 002b:00007ffdc8bbbf38 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007f6d4761a943 RDX: 0000000000000008 RSI: 00007ffdc8bbc030 RDI: 000000000000000a RBP: 00000000020592c0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000003 R13: 0000000000000000 R14: 0000000002060200 R15: 0000000002047250 Modules linked in: ---[ end trace c74e5d1624e6ebad ]--- RIP: 0010:kmsan_internal_check_memory+0xb84/0xbb0 mm/kmsan/kmsan.c:727 Code: 65 8b 34 25 04 90 03 00 65 48 8b 14 25 90 0d 04 00 48 c7 c7 6c 6c 81 8b 31 c0 e8 b7 fd 79 ff 0f 0b 0f 0b e8 8e 22 56 ff 0f 0b <0f> 0b e8 75 d0 79 ff 85 c0 75 1f 65 8b 34 25 04 90 03 00 65 48 8b RSP: 0018:ffff88810da3fa60 EFLAGS: 00010046 RAX: 0000000000000002 RBX: 00000000e3a000b3 RCX: ffff888000000000 RDX: 000007ffffffffff RSI: 0000000000000004 RDI: ffff88810da3fc08 RBP: ffff88810da3fb10 R08: ffff88810da3fc08 R09: ffff88818da3fc08 R10: ffff88810da8fc08 R11: ffffffff8229a110 R12: 0000000000000004 R13: 0000000000000004 R14: 0000000000000282 R15: 0000000000000000 FS: 00007f6d47f067a0(0000) GS:ffff88812fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6d47f0d000 CR3: 000000010d901000 CR4: 00000000001406f0