watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor0:9606] Modules linked in: CPU: 0 PID: 9606 Comm: syz-executor0 Not tainted 4.18.0-rc5+ #28 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rep_nop arch/x86/include/asm/processor.h:658 [inline] RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:663 [inline] RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline] RIP: 0010:smp_call_function_single+0x357/0x500 kernel/smp.c:302 Code: 85 93 00 00 00 e8 89 c5 12 00 e9 be 00 00 00 8b 3a e8 fd 79 6e 00 45 85 f6 74 91 41 89 de eb 08 0f 1f 00 e8 6b c5 12 00 f3 90 <8b> 5c 24 58 4c 89 e7 e8 bd 6f 6e 00 8b 00 83 e0 01 83 e3 01 85 c0 RSP: 0018:ffff88011820f940 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffffffff81555f95 RBX: 0000000000000001 RCX: 0000000000040000 RDX: ffffc900124a9000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffff88011820fa08 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffff8117d090 R12: ffff88011820f998 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801a46ba680 FS: 00007fd6e1aeb700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000930008 CR3: 0000000116d80000 CR4: 00000000001406f0 DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: task_function_call kernel/events/core.c:115 [inline] event_function_call+0x2ee/0x750 kernel/events/core.c:277 _perf_event_disable+0x104/0x150 kernel/events/core.c:2175 perf_event_for_each_child kernel/events/core.c:4907 [inline] _perf_ioctl kernel/events/core.c:5098 [inline] perf_ioctl+0x96f/0x5740 kernel/events/core.c:5110 vfs_ioctl fs/ioctl.c:46 [inline] do_vfs_ioctl+0xdef/0x2740 fs/ioctl.c:686 ksys_ioctl fs/ioctl.c:701 [inline] __do_sys_ioctl fs/ioctl.c:708 [inline] __se_sys_ioctl fs/ioctl.c:706 [inline] __x64_sys_ioctl+0x280/0x320 fs/ioctl.c:706 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x455ab9 Code: 1d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fd6e1aeac68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd6e1aeb6d4 RCX: 0000000000455ab9 RDX: 0000000000000000 RSI: 0000000000002401 RDI: 0000000000000014 RBP: 000000000072bf48 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004be0eb R14: 00000000004ccbf8 R15: 0000000000000001 Sending NMI from CPU 0 to CPUs 1: ------------[ cut here ]------------ kernel BUG at mm/kmsan/kmsan_entry.c:81! invalid opcode: 0000 [#1] SMP PTI CPU: 1 PID: 9570 Comm: syz-executor5 Not tainted 4.18.0-rc5+ #28 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 80 90 03 00 83 c0 01 83 f8 08 7d 27 65 89 04 25 80 90 03 00 65 c6 04 25 15 6e 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:fffffe0000049ea8 EFLAGS: 00010046 RAX: 0000000000000200 RBX: 0000000000000001 RCX: 00000000c0000101 RDX: 00000000ffff8802 RSI: ffffffff8a40136c RDI: 0000000000000480 RBP: fffffe0000049ef9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000117d2c000 R15: 0000000000000000 FS: 00007f1bedcf2700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33721000 CR3: 0000000117d2c000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace eb779d2eefae2b7d ]--- RIP: 0010:kmsan_nmi_enter+0x42/0x70 mm/kmsan/kmsan_entry.c:80 Code: 00 74 27 65 8b 04 25 80 90 03 00 83 c0 01 83 f8 08 7d 27 65 89 04 25 80 90 03 00 65 c6 04 25 15 6e 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:fffffe0000049ea8 EFLAGS: 00010046 RAX: 0000000000000200 RBX: 0000000000000001 RCX: 00000000c0000101 RDX: 00000000ffff8802 RSI: ffffffff8a40136c RDI: 0000000000000480 RBP: fffffe0000049ef9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000117d2c000 R15: 0000000000000000 FS: 00007f1bedcf2700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33721000 CR3: 0000000117d2c000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400