watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.3:851] Modules linked in: irq event stamp: 195966 hardirqs last enabled at (195965): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (195966): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (195952): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (195925): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (195925): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 1 PID: 851 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 RIP: 0010:__read_once_size include/linux/compiler.h:263 [inline] RIP: 0010:arch_atomic64_read arch/x86/include/asm/atomic64_64.h:22 [inline] RIP: 0010:atomic64_read include/asm-generic/atomic-instrumented.h:28 [inline] RIP: 0010:perf_event_count kernel/events/core.c:3927 [inline] RIP: 0010:perf_output_read_group kernel/events/core.c:6217 [inline] RIP: 0010:perf_output_read+0xc1a/0x1270 kernel/events/core.c:6254 Code: 44 24 10 be 08 00 00 00 4c 8d a0 b8 00 00 00 48 8b a8 b0 00 00 00 4c 89 e7 e8 52 10 22 00 4c 89 e0 48 c1 e8 03 42 80 3c 28 00 <0f> 85 cc 04 00 00 4c 8b 7c 24 10 31 ff 4c 8b 74 24 40 49 8b 87 b8 RSP: 0018:ffff88806ea67158 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 1ffff1100c2d0587 RBX: ffff88806ea674a0 RCX: ffffffff81763e8e RDX: ffffed100c2d0588 RSI: 0000000000000008 RDI: ffff888061682c38 RBP: 000000060016da68 R08: 0000000000000000 R09: ffffed100c2d0587 R10: ffff888061682c3f R11: ffffffff8c66505b R12: ffff888061682c38 R13: dffffc0000000000 R14: ffff888061682b80 R15: 0000000000000010 FS: 00007f86f202b700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020f32000 CR3: 00000000ab239000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000005800 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: perf_output_sample+0xc1b/0x18f0 kernel/events/core.c:6296 __perf_event_output kernel/events/core.c:6621 [inline] perf_event_output_forward+0x12f/0x270 kernel/events/core.c:6634 __perf_event_overflow+0x13c/0x370 kernel/events/core.c:7907 perf_swevent_overflow kernel/events/core.c:7983 [inline] perf_swevent_event+0x347/0x550 kernel/events/core.c:8011 do_perf_sw_event kernel/events/core.c:8124 [inline] ___perf_sw_event+0x309/0x570 kernel/events/core.c:8155 __perf_sw_event+0x58/0x120 kernel/events/core.c:8167 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 01 ca c3 0f 1f 80 00 00 00 00 0f 01 cb 83 fa 40 0f 82 70 ff ff ff 89 d1 a4 31 c0 0f 01 ca c3 66 2e 0f 1f 84 00 00 00 00 00 0f 01 cb 83 RSP: 0018:ffff88806ea67a50 EFLAGS: 00050206 RAX: ffffed100acacea0 RBX: 0000000000007500 RCX: 0000000000002fcb RDX: 0000000000007500 RSI: 0000000020f32000 RDI: ffff888056564535 RBP: 0000000020f2dacb R08: 0000000000000001 R09: ffffed100acace9f R10: ffff8880565674ff R11: 0000000000000000 R12: ffff888056560000 R13: 0000000020f34fcb 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:1971 [inline] skb_copy_to_page_nocache include/net/sock.h:1997 [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:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 __sys_sendto+0x21a/0x320 net/socket.c:1899 __do_sys_sendto net/socket.c:1911 [inline] __se_sys_sendto net/socket.c:1907 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:1907 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f86f36b6279 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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:00007f86f202b168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f86f37c8f80 RCX: 00007f86f36b6279 RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000007 RBP: 00007f86f3710189 R08: 0000000000000000 R09: 0000000000000053 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeec914b3f R14: 00007f86f202b300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60