watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.0:32565] Modules linked in: irq event stamp: 3466437 ieee802154 phy0 wpan0: encryption failed: -22 hardirqs last enabled at (3466436): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (3466437): [] trace_hardirqs_off_thunk+0x1a/0x1c ieee802154 phy1 wpan1: encryption failed: -22 softirqs last enabled at (0): [] copy_process.part.0+0x15b9/0x8260 kernel/fork.c:1856 softirqs last disabled at (579): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (579): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 1 PID: 32565 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:calculate_probability net/sched/sch_pie.c:420 [inline] RIP: 0010:pie_timer+0x3d8/0x740 net/sched/sch_pie.c:434 Code: ab b0 02 00 00 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 0b 03 00 00 48 8b 6c 24 18 <4c> 89 ef 8b 44 24 0c 48 d1 ed 89 83 d4 02 00 00 48 89 ee e8 e0 37 RSP: 0018:ffff8880ba107cb8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000007 RBX: ffff888053b8e900 RCX: ffffffff869a4e24 RDX: 0000000000000000 RSI: ffffffff869a4e4b RDI: ffff888053b8ebd4 RBP: 000000000004c4b4 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 00000000ffeced30 R13: 0000000000000000 R14: ffff888053b8ebf0 R15: 0000000000000001 FS: 00007f05b9323700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ea25000 CR3: 00000000967b9000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1696 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:__sanitizer_cov_trace_switch+0x3a/0x80 kernel/kcov.c:224 Code: 48 83 f8 20 74 5c 77 3f 48 83 f8 08 74 4c 48 83 f8 10 75 2c 41 bc 03 00 00 00 4c 8b 6d 00 31 db 4d 85 ed 74 1b 48 8b 74 dd 10 <4c> 89 e7 48 83 c3 01 48 8b 4c 24 20 e8 55 fe ff ff 49 39 dd 75 e5 RSP: 0018:ffff888032a47a80 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000002 RBX: 000000000000000a RCX: ffffffff83bc332d RDX: 00000000402c542b RSI: 0000000000004b3b RDI: 0000000000000005 RBP: ffffffff88c084e0 R08: 00000000200003c0 R09: 0000000000004b3a R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000005 R13: 000000000000003e R14: 1ffff11006548f59 R15: ffff88813be27200 vt_ioctl+0x16d/0x2380 drivers/tty/vt/vt_ioctl.c:370 tty_ioctl+0x5b0/0x1630 drivers/tty/tty_io.c:2669 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f05ba9ae049 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:00007f05b9323168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f05baac0f60 RCX: 00007f05ba9ae049 RDX: 00000000200003c0 RSI: 00000000402c542b RDI: 0000000000000005 RBP: 00007f05baa0808d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe0e65dcdf R14: 00007f05b9323300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 32574 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_acquire+0x945/0x3ff0 kernel/locking/lockdep.c:3419 Code: 85 0b 26 00 00 8b 15 5a f0 fa 08 85 d2 0f 84 58 f8 ff ff 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03 80 3c 02 00 <0f> 85 d1 25 00 00 48 8b 54 24 18 4d 89 a5 78 08 00 00 48 b8 00 00 RSP: 0018:ffff88802d607758 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 6ef1e41ac93df87f RDX: 1ffff110143ebda7 RSI: 000000009004fc4c RDI: 0000000000000000 RBP: 0000000000000000 R08: 00000000594ea6fa R09: 0000000000000000 R10: ffff8880a1f5ed48 R11: 0000000000000000 R12: 6ef1e41ac93df87f R13: ffff8880a1f5e4c0 R14: ffff8880a1f5ed60 R15: 0000000000000001 FS: 00007f05b9302700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f05b9301ff8 CR3: 00000000967b9000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 rcu_lock_acquire include/linux/rcupdate.h:242 [inline] rcu_read_lock include/linux/rcupdate.h:627 [inline] task_dump_owner+0x9a/0x590 fs/proc/base.c:1703 tid_fd_update_inode+0x26/0xe0 fs/proc/fd.c:104 tid_fd_revalidate+0x19d/0x220 fs/proc/fd.c:133 d_revalidate fs/namei.c:767 [inline] lookup_fast+0xaa1/0x1080 fs/namei.c:1621 do_last fs/namei.c:3287 [inline] path_openat+0xa11/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f05ba960f64 Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44 RSP: 002b:00007f05b9302040 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f05baac1030 RCX: 00007f05ba960f64 RDX: 0000000000000000 RSI: 00007f05b93020d0 RDI: 00000000ffffff9c RBP: 00007f05b93020d0 R08: 0000000000000000 R09: 00007f05b9301f50 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 00007ffe0e65dcdf R14: 00007f05b9302300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: ab stos %eax,%es:(%rdi) 1: b0 02 mov $0x2,%al 3: 00 00 add %al,(%rax) 5: 48 89 fa mov %rdi,%rdx 8: 48 c1 ea 03 shr $0x3,%rdx c: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx 10: 48 89 f8 mov %rdi,%rax 13: 83 e0 07 and $0x7,%eax 16: 83 c0 03 add $0x3,%eax 19: 38 d0 cmp %dl,%al 1b: 7c 08 jl 0x25 1d: 84 d2 test %dl,%dl 1f: 0f 85 0b 03 00 00 jne 0x330 25: 48 8b 6c 24 18 mov 0x18(%rsp),%rbp * 2a: 4c 89 ef mov %r13,%rdi <-- trapping instruction 2d: 8b 44 24 0c mov 0xc(%rsp),%eax 31: 48 d1 ed shr %rbp 34: 89 83 d4 02 00 00 mov %eax,0x2d4(%rbx) 3a: 48 89 ee mov %rbp,%rsi 3d: e8 .byte 0xe8 3e: e0 37 loopne 0x77