hrtimer: interrupt took 42698779 ns random: crng init done watchdog: BUG: soft lockup - CPU#3 stuck for 21s! [grep:4749] Modules linked in: hardirqs last enabled at (2780): [] __do_softirq+0x204/0xa60 kernel/softirq.c:276 hardirqs last disabled at (2781): [] idtentry_enter_cond_rcu+0x1d/0x50 arch/x86/entry/common.c:649 softirqs last enabled at (2760): [] __do_softirq+0x748/0xa60 kernel/softirq.c:319 softirqs last disabled at (2779): [] asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 CPU: 3 PID: 4749 Comm: grep Not tainted 5.8.0-rc7-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 RIP: 0010:__do_softirq+0x22f/0xa60 kernel/softirq.c:278 Code: c7 c0 98 e0 b4 89 48 c1 e8 03 42 80 3c 30 00 0f 85 70 07 00 00 48 83 3d 76 de 94 01 00 0f 84 4a 06 00 00 fb 66 0f 1f 44 00 00 <48> c7 44 24 08 c0 90 a0 89 b8 ff ff ff ff 0f bc 04 24 83 c0 01 89 RSP: 0000:ffffc90000598f70 EFLAGS: 00000286 RAX: 1ffffffff1369c13 RBX: ffff8880294683c0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88200204 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff88000c3a R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007fe02dd23700(0000) GS:ffff88802d100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000f5d1e8 CR3: 000000001efc6000 CR4: 0000000000340ee0 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: invoke_softirq kernel/softirq.c:387 [inline] __irq_exit_rcu kernel/softirq.c:417 [inline] irq_exit_rcu+0x229/0x270 kernel/softirq.c:429 sysvec_apic_timer_interrupt+0x54/0x120 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:585 Code: ba 63 03 00 00 e8 f5 bf 00 00 0f 1f 44 00 00 48 89 5c 24 e0 48 89 6c 24 e8 48 89 fb 4c 89 64 24 f0 4c 89 6c 24 f8 48 83 ec 38 <0f> b6 47 04 83 e0 0f 83 f8 06 0f 85 3e 01 00 00 31 d2 66 83 7b 06 RSP: 002b:00007ffd13103ee0 EFLAGS: 00010202 RAX: 00000000000003b7 RBX: 00007fe02d584588 RCX: 0000000000000000 RDX: 00007fe02d57d94c RSI: 0000000000000edc RDI: 00007fe02d584588 RBP: 00007fe02dd2aef8 R08: 00000000004282a7 R09: 0000000000000004 R10: 00007ffd13103f70 R11: 00007ffd13103f70 R12: 0000000000000004 R13: 0000000010a0a9c4 R14: 0000000000000002 R15: 00007ffd131040f8