TCP: request_sock_TCP: Possible SYN flooding on port 2. Sending cookies. Check SNMP counters. watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor4:17014] Modules linked in: CPU: 0 PID: 17014 Comm: syz-executor4 Not tainted 4.19.0-rc1+ #39 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:msan_get_shadow_origin_ptr+0xc/0x2e0 mm/kmsan/kmsan_instr.c:245 Code: 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 31 d2 e8 05 00 00 00 5d c3 0f 1f 00 55 48 89 e5 41 57 41 56 41 55 41 54 <53> 48 83 ec 28 48 c7 c0 00 50 54 8a 49 c7 c6 00 30 54 8a 85 d2 4c RSP: 0018:ffff8801104df1c0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffffffff81542b05 RBX: 0000000000000003 RCX: 0000000000040000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8801104df278 RBP: ffff8801104df1e0 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffff81179a80 R12: ffff8801104df278 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801bbabc400 FS: 00007f1ae0e5f700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002039a000 CR3: 0000000113c54000 CR4: 00000000001406f0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000020000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 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 smp_call_function_many+0x658/0xdb0 kernel/smp.c:434 smp_call_function kernel/smp.c:492 [inline] on_each_cpu+0xd2/0x160 kernel/smp.c:604 flush_tlb_kernel_range+0x161/0x1e0 arch/x86/mm/tlb.c:690 __purge_vmap_area_lazy+0x1f7/0x3b0 mm/vmalloc.c:677 vm_unmap_aliases+0x626/0x6d0 mm/vmalloc.c:1109 change_page_attr_set_clr+0x593/0x1e50 arch/x86/mm/pageattr.c:1474 change_page_attr_clear arch/x86/mm/pageattr.c:1537 [inline] set_memory_ro+0xcc/0x100 arch/x86/mm/pageattr.c:1766 bpf_jit_binary_lock_ro include/linux/filter.h:704 [inline] bpf_int_jit_compile+0x7a2b/0x8580 arch/x86/net/bpf_jit_comp.c:1168 bpf_prog_select_runtime+0x953/0x9f0 kernel/bpf/core.c:1498 bpf_migrate_filter net/core/filter.c:1273 [inline] bpf_prepare_filter+0x1988/0x1dd0 net/core/filter.c:1321 __get_filter+0x62c/0x7a0 net/core/filter.c:1490 sk_attach_filter+0x72/0x2e0 net/core/filter.c:1505 sock_setsockopt+0x3760/0x4910 net/core/sock.c:892 __sys_setsockopt+0x339/0x540 net/socket.c:1896 __do_sys_setsockopt net/socket.c:1911 [inline] __se_sys_setsockopt net/socket.c:1908 [inline] __x64_sys_setsockopt+0x15c/0x1c0 net/socket.c:1908 do_syscall_64+0x15b/0x220 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x457089 Code: fd b4 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 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f1ae0e5ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f1ae0e5f6d4 RCX: 0000000000457089 RDX: 000000000000001a RSI: 0000000000000001 RDI: 0000000000000005 RBP: 00000000009300a0 R08: 0000000000000010 R09: 0000000000000000 R10: 0000000020ab9ff0 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d4b28 R14: 00000000004c902d R15: 0000000000000000 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: 17002 Comm: syz-executor1 Not tainted 4.19.0-rc1+ #39 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:fffffe0000049ea8 EFLAGS: 00010046 RAX: 0000000000000200 RBX: 0000000000000001 RCX: 00000000c0000101 RDX: 00000000ffff8802 RSI: ffffffff8900136c RDI: ffffffff7fffffff RBP: fffffe0000049ef9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000112354000 R15: 0000000000000000 FS: 00007fa4e6cdc700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000625208 CR3: 0000000112354000 CR4: 00000000001406e0 Call Trace: Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace 05e67df0c821dde9 ]--- 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:fffffe0000049ea8 EFLAGS: 00010046 RAX: 0000000000000200 RBX: 0000000000000001 RCX: 00000000c0000101 RDX: 00000000ffff8802 RSI: ffffffff8900136c RDI: ffffffff7fffffff RBP: fffffe0000049ef9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000112354000 R15: 0000000000000000 FS: 00007fa4e6cdc700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000625208 CR3: 0000000112354000 CR4: 00000000001406e0