audit: type=1326 audit(1536196950.508:2): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=6848 comm="syz-executor6" exe="/root/syz-executor6" sig=31 arch=c000003e syscall=202 compat=0 ip=0x457099 code=0xffff0000 audit: type=1326 audit(1536196950.575:3): auid=4294967295 uid=0 gid=0 ses=4294967295 subj==unconfined pid=6854 comm="syz-executor5" exe="/root/syz-executor5" sig=9 arch=c000003e syscall=202 compat=0 ip=0x457099 code=0x0 watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor4:6871] Modules linked in: CPU: 1 PID: 6871 Comm: syz-executor4 Not tainted 4.19.0-rc1+ #41 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:msan_get_shadow_origin_ptr+0x187/0x2e0 mm/kmsan/kmsan_instr.c:293 Code: 8b 45 c8 48 89 45 b0 ff 75 b0 9d 48 8b 7d d0 48 8b 47 40 48 85 c0 0f 84 da 00 00 00 45 89 fd 41 81 e5 ff 0f 00 00 4b 8d 0c 2c <48> 83 c1 ff 48 81 f9 01 10 00 00 72 21 48 89 7d d0 31 d2 4c 89 ff RSP: 0018:ffff8801bc5ef510 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: ffffea000a88a5a0 RBX: ffffffff8a544000 RCX: 00000000000005fc RDX: 00000000000006e0 RSI: 0000000000000000 RDI: ffffea000a6a39a0 RBP: ffff8801bc5ef560 R08: 0000000000000000 R09: 0000000000000002 R10: 000077ff80000001 R11: ffffffff81179950 R12: 0000000000000004 R13: 00000000000005f8 R14: ffffffff8a543000 R15: ffff8801bc5ef5f8 FS: 00007f29e6b29700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000001fffff70 CR3: 0000000147474000 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 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x10ee/0x3890 kernel/exit.c:869 do_group_exit+0x1a0/0x350 kernel/exit.c:972 get_signal+0x1425/0x1ef0 kernel/signal.c:2513 do_signal+0x11d/0x2060 arch/x86/kernel/signal.c:816 exit_to_usermode_loop arch/x86/entry/common.c:162 [inline] prepare_exit_to_usermode+0x273/0x410 arch/x86/entry/common.c:197 retint_user+0x8/0x8 RIP: 0033: (null) Code: Bad RIP value. RSP: 002b:00000000200003c8 EFLAGS: 00010217 RAX: 0000000000000000 RBX: 00007f29e6b296d4 RCX: 0000000000457099 RDX: 0000000020000440 RSI: 00000000200003c0 RDI: 0000000000000000 RBP: 00000000009301e0 R08: 0000000020000040 R09: 0000000000000000 R10: 0000000020000380 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cbae8 R14: 00000000004c33c7 R15: 0000000000000002 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: 6856 Comm: syz-executor1 Not tainted 4.19.0-rc1+ #41 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: ffff880137fce000 RBP: fffffe000000eef9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 00000001b07c6000 R15: 0000000000000000 FS: 00007fc07bfc2700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff548e93169 CR3: 00000001b07c6000 CR4: 00000000001406f0 Call Trace: Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace ada6c16e9b82be9c ]--- 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: ffff880137fce000 RBP: fffffe000000eef9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 00000001b07c6000 R15: 0000000000000000 FS: 00007fc07bfc2700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff548e93169 CR3: 00000001b07c6000 CR4: 00000000001406f0