watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor091:10219] Modules linked in: irq event stamp: 27576 hardirqs last enabled at (27575): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (27576): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (23314): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (23059): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (23059): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 1 PID: 10219 Comm: syz-executor091 Not tainted 4.19.194-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:memcpy_erms+0x8/0x10 arch/x86/lib/memcpy_64.S:56 Code: 90 90 eb 1e 0f 1f 00 48 89 f8 48 89 d1 48 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 c3 66 0f 1f 44 00 00 48 89 f8 48 89 d1 f3 a4 0f 1f 80 00 00 00 00 48 89 f8 48 83 fa 20 72 7e 40 38 fe 7c 35 RSP: 0018:ffff88809aa87150 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff888097ab6e68 RBX: ffff88809aa874a0 RCX: 0000000000000000 RDX: 0000000000000010 RSI: ffff88809aa872a0 RDI: ffff888097ab6e78 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1012f56dce R10: ffff888097ab6e77 R11: ffffffff8c66205b R12: ffff88809aa87290 R13: dffffc0000000000 R14: 1ffff11013550e99 R15: 0000000000000010 FS: 00007f232f148700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020f51000 CR3: 0000000097cb1000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: memcpy include/linux/string.h:377 [inline] memcpy_common kernel/events/internal.h:172 [inline] __output_copy kernel/events/internal.h:176 [inline] perf_output_read_group kernel/events/core.c:6211 [inline] perf_output_read+0xd2e/0x1270 kernel/events/core.c:6244 perf_output_sample+0xc1b/0x18f0 kernel/events/core.c:6286 __perf_event_output kernel/events/core.c:6611 [inline] perf_event_output_forward+0x12f/0x270 kernel/events/core.c:6624 __perf_event_overflow+0x13c/0x370 kernel/events/core.c:7897 perf_swevent_overflow kernel/events/core.c:7973 [inline] perf_swevent_event+0x347/0x550 kernel/events/core.c:8001 do_perf_sw_event kernel/events/core.c:8114 [inline] ___perf_sw_event+0x309/0x570 kernel/events/core.c:8145 __perf_sw_event+0x58/0x120 kernel/events/core.c:8157 perf_sw_event include/linux/perf_event.h:1074 [inline] __do_page_fault+0x80e/0xd60 arch/x86/mm/fault.c:1453 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1205 RIP: 0010:copy_user_enhanced_fast_string+0xe/0x20 arch/x86/lib/copy_user_64.S:181 Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 1f 00 c3 0f 1f 80 00 00 00 00 0f 1f 00 83 fa 40 0f 82 70 ff ff ff 89 d1 a4 31 c0 0f 1f 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 83 RSP: 0018:ffff88809aa87a50 EFLAGS: 00010206 RAX: ffffed1013876ea0 RBX: 0000000000007500 RCX: 0000000000003fcb RDX: 0000000000007500 RSI: 0000000020f51000 RDI: ffff88809c3b3535 RBP: 0000000020f4dacb R08: 0000000000000001 R09: ffffed1013876e9f R10: ffff88809c3b74ff R11: 0000000000000000 R12: ffff88809c3b0000 R13: 0000000020f54fcb R14: 00007ffffffff000 R15: 0000000000000000 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_from_user arch/x86/include/asm/uaccess_64.h:71 [inline] copyin+0xcd/0xf0 lib/iov_iter.c:146 _copy_from_iter_full+0x1df/0x7c0 lib/iov_iter.c:724 copy_from_iter_full include/linux/uio.h:124 [inline] skb_do_copy_data_nocache include/net/sock.h:1968 [inline] skb_copy_to_page_nocache include/net/sock.h:1994 [inline] tcp_sendmsg_locked+0x126b/0x2f60 net/ipv4/tcp.c:1364 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1462 inet_sendmsg+0x132/0x5a0 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 __sys_sendto+0x21a/0x320 net/socket.c:1787 __do_sys_sendto net/socket.c:1799 [inline] __se_sys_sendto net/socket.c:1795 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:1795 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4492d9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 15 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f232f148308 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00000000004cf508 RCX: 00000000004492d9 RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000006 RBP: 00000000004cf500 R08: 0000000000000000 R09: 0000000000000053 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000049e484 R13: 00007ffde763059f R14: 00007f232f148400 R15: 0000000000022000