watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [kworker/0:1:12] Modules linked in: irq event stamp: 7880118 hardirqs last enabled at (7880117): [] trace_hardirqs_on_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:41 hardirqs last disabled at (7880118): [] trace_hardirqs_off_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:42 softirqs last enabled at (7850300): [] __do_softirq+0x6cd/0x98c kernel/softirq.c:319 softirqs last disabled at (7850227): [] invoke_softirq kernel/softirq.c:373 [inline] softirqs last disabled at (7850227): [] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.5.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events free_work RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x0/0x20 kernel/kcov.c:273 Code: f6 fe ff ff 5d c3 0f 1f 40 00 55 0f b7 d6 0f b7 f7 bf 03 00 00 00 48 89 e5 48 8b 4d 08 e8 d8 fe ff ff 5d c3 66 0f 1f 44 00 00 <55> 89 f2 89 fe bf 05 00 00 00 48 89 e5 48 8b 4d 08 e8 ba fe ff ff RSP: 0018:ffffc90000d2f958 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: ffff8880a99f8300 RBX: 1ffff920001a5f30 RCX: ffffffff8169d24b RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90000d2fa40 R08: ffff8880a99f8300 R09: ffffed1015d27059 R10: ffffed1015d27058 R11: ffff8880ae9382c7 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe3d77e958 CR3: 0000000089a51000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: smp_call_function_many+0x7ba/0x940 kernel/smp.c:451 smp_call_function+0x42/0x90 kernel/smp.c:509 on_each_cpu+0x2f/0x1f0 kernel/smp.c:616 flush_tlb_kernel_range+0x19b/0x250 arch/x86/mm/tlb.c:839 kasan_release_vmalloc+0xb4/0xc0 mm/kasan/common.c:988 __purge_vmap_area_lazy+0xca5/0x1ef0 mm/vmalloc.c:1321 try_purge_vmap_area_lazy mm/vmalloc.c:1340 [inline] free_vmap_area_noflush+0x2c8/0x390 mm/vmalloc.c:1376 free_unmap_vmap_area mm/vmalloc.c:1389 [inline] remove_vm_area+0x1cf/0x230 mm/vmalloc.c:2209 vm_remove_mappings mm/vmalloc.c:2236 [inline] __vunmap+0x239/0x950 mm/vmalloc.c:2298 free_work+0x5e/0x80 mm/vmalloc.c:58 process_one_work+0x9af/0x1740 kernel/workqueue.c:2264 worker_thread+0x98/0xe40 kernel/workqueue.c:2410 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 868 Comm: syz-executor.0 Not tainted 5.5.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x3e9/0xc40 kernel/locking/qspinlock.c:507 Code: 41 c6 45 01 01 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 41 be 00 80 00 00 83 e3 07 4c 8d 24 01 41 bf 01 00 00 00 eb 0c f3 90 <41> 83 ee 01 0f 84 33 05 00 00 41 0f b6 04 24 38 d8 7f 08 84 c0 0f RSP: 0018:ffffc90017327788 EFLAGS: 00000206 RAX: 0000000000000003 RBX: 0000000000000000 RCX: 1ffffffff1347e1c RDX: 0000000000000001 RSI: ffffffff817a8b6e RDI: 0000000000000282 RBP: ffffc90017327858 R08: ffff8880a74e8040 R09: fffffbfff165e79d R10: 0000000000000001 R11: 0000000000000000 R12: fffffbfff1347e1c R13: ffffffff89a3f0e0 R14: 0000000000001a77 R15: 0000000000000001 FS: 00000000016da940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f16e26eedb8 CR3: 0000000091471000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:638 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:50 [inline] queued_spin_lock include/asm-generic/qspinlock.h:81 [inline] do_raw_spin_lock+0x21d/0x2f0 kernel/locking/spinlock_debug.c:113 __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline] _raw_spin_lock+0x37/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:338 [inline] alloc_vmap_area+0x1c8/0x2080 mm/vmalloc.c:1144 __get_vm_area_node+0x17e/0x3b0 mm/vmalloc.c:2109 __vmalloc_node_range+0xce/0x790 mm/vmalloc.c:2541 alloc_thread_stack_node kernel/fork.c:243 [inline] dup_task_struct kernel/fork.c:872 [inline] copy_process+0x9aa/0x7230 kernel/fork.c:1911 _do_fork+0x146/0x1090 kernel/fork.c:2421 __do_sys_clone kernel/fork.c:2576 [inline] __se_sys_clone kernel/fork.c:2557 [inline] __x64_sys_clone+0x19a/0x260 kernel/fork.c:2557 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45d9c9 Code: ff 48 85 f6 0f 84 d7 8c fb ff 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 0f 8c ae 8c fb ff 74 01 c3 31 ed 48 f7 c7 00 00 01 00 75 RSP: 002b:00007ffc7d1a0c98 EFLAGS: 00000202 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f16e26ef700 RCX: 000000000045d9c9 RDX: 00007f16e26ef9d0 RSI: 00007f16e26eedb0 RDI: 00000000003d0f00 RBP: 00007ffc7d1a0eb0 R08: 00007f16e26ef700 R09: 00007f16e26ef700 R10: 00007f16e26ef9d0 R11: 0000000000000202 R12: 0000000000000000 R13: 00007ffc7d1a0d4f R14: 00007f16e26ef9c0 R15: 000000000075bf2c