Dead loop on virtual device ip6_vti0, fix it urgently! Dead loop on virtual device ip6_vti0, fix it urgently! Dead loop on virtual device ip6_vti0, fix it urgently! vhci_hcd: invalid port number 9 vhci_hcd: default hub control req: 0000 v0000 i0009 l0 watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor0:6957] Modules linked in: CPU: 1 PID: 6957 Comm: syz-executor0 Not tainted 4.19.0-rc1+ #40 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:msan_get_shadow_origin_ptr+0xfa/0x2e0 include/linux/mmzone.h:1212 Code: 53 8a 48 85 c9 74 29 48 89 d6 48 c1 ee 22 48 8b 0c f1 48 85 c9 74 19 48 c1 ea 1b 83 e2 7f 48 c1 e2 05 48 01 d1 74 09 f6 01 02 <0f> 85 68 01 00 00 48 c7 45 c0 00 00 00 00 9c 8f 45 c0 48 8b 45 c0 RSP: 0018:ffff88012bfaf8f0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: ffff8801abfaf9d8 RBX: ffffffff8a544000 RCX: ffff88021fff14a0 RDX: 00000000000004a0 RSI: 0000000000000000 RDI: ffff88012bfaf9d8 RBP: ffff88012bfaf940 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffff81179950 R12: 0000000000000004 R13: ffff88012d48bb00 R14: ffffffff8a543000 R15: ffff88012bfaf9d8 FS: 000000000106b940(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff081dfddb8 CR3: 00000001b1336000 CR4: 00000000001406e0 Call Trace: __msan_metadata_ptr_for_load_4+0x10/0x20 mm/kmsan/kmsan_instr.c:349 csd_lock_wait kernel/smp.c:108 [inline] smp_call_function_single+0x373/0x4e0 kernel/smp.c:302 task_function_call kernel/events/core.c:115 [inline] event_function_call+0x2cb/0x6f0 kernel/events/core.c:277 perf_remove_from_context kernel/events/core.c:2105 [inline] perf_event_release_kernel+0x7d6/0x19e0 kernel/events/core.c:4560 perf_release+0x5d/0x90 kernel/events/core.c:4647 __fput+0x4cf/0xc20 fs/file_table.c:278 ____fput+0x37/0x40 fs/file_table.c:309 task_work_run+0x22e/0x2b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop arch/x86/entry/common.c:166 [inline] prepare_exit_to_usermode+0x33e/0x410 arch/x86/entry/common.c:197 syscall_return_slowpath+0xdb/0x700 arch/x86/entry/common.c:268 do_syscall_64+0xde/0x100 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x410c51 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:0000000000a3fdc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000410c51 RDX: 0000000000000000 RSI: 00000000007311d8 RDI: 0000000000000004 RBP: 0000000000000000 R08: ffffffffffffffff R09: ffffffffffffffff R10: 0000000000a3fcf0 R11: 0000000000000293 R12: 000000000000001e R13: 0000000000036567 R14: 0000000000000001 R15: badc0ffeebadface Sending NMI from CPU 1 to CPUs 0: ------------[ cut here ]------------ kernel BUG at mm/kmsan/kmsan_entry.c:81! invalid opcode: 0000 [#1] SMP PTI CPU: 0 PID: 6971 Comm: syz-executor7 Not tainted 4.19.0-rc1+ #40 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kmsan_nmi_enter+0x42/0x70 mm/kmsan/kmsan_entry.c:80 Code: 00 74 27 65 8b 04 25 40 92 03 00 83 c0 01 83 f8 08 7d 27 65 89 04 25 40 92 03 00 65 c6 04 25 d5 6f 0b 00 ff c3 0f 0b 90 eb fe <0f> 0b 66 90 66 2e 0f 1f 84 00 00 00 00 00 eb fe 0f 0b 66 90 66 2e RSP: 0018:fffffe000000eea8 EFLAGS: 00010046 RAX: 0000000000000200 RBX: 0000000000000001 RCX: 00000000c0000101 RDX: 00000000ffff8802 RSI: ffffffff8900136c RDI: ffffffff7fffffff RBP: fffffe000000eef9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000129f8a000 R15: 0000000000000000 FS: 00007fdc4491d700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004df220 CR3: 0000000129f8a000 CR4: 00000000001406f0 Call Trace: Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace 46c6daab572cf300 ]--- RIP: 0010:kmsan_nmi_enter+0x42/0x70 mm/kmsan/kmsan_entry.c:80 Code: 00 74 27 65 8b 04 25 40 92 03 00 83 c0 01 83 f8 08 7d 27 65 89 04 25 40 92 03 00 65 c6 04 25 d5 6f 0b 00 ff c3 0f 0b 90 eb fe <0f> 0b 66 90 66 2e 0f 1f 84 00 00 00 00 00 eb fe 0f 0b 66 90 66 2e RSP: 0018:fffffe000000eea8 EFLAGS: 00010046 RAX: 0000000000000200 RBX: 0000000000000001 RCX: 00000000c0000101 RDX: 00000000ffff8802 RSI: ffffffff8900136c RDI: ffffffff7fffffff RBP: fffffe000000eef9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000129f8a000 R15: 0000000000000000 FS: 00007fdc4491d700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004df220 CR3: 0000000129f8a000 CR4: 00000000001406f0