INFO: task syz-executor027:7130 can't die for more than 143 seconds. syz-executor027 R running task 24264 7130 7124 0x00004006 Call Trace: INFO: task syz-executor027:7133 can't die for more than 144 seconds. syz-executor027 R running task 24280 7133 7126 0x00004006 Call Trace: preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:4346 retint_kernel+0x1b/0x2b RIP: 0010:write_comp_data+0x78/0x80 kernel/kcov.c:242 Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <06> 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 RSP: ae7383d0:ffff888094fa84f8 EFLAGS: ffffffff81590ea0 ORIG_RAX: ffffc90000f97d30 RAX: 9e0cdb600d170f00 RBX: ffff888094fa8da0 RCX: ffff8880ae7379d8 RDX: 9e0cdb600d170f00 RSI: fffff520002c9e08 RDI: 0000000000408d40 RBP: 0000000000000000 R08: 00000000000571e9 R09: ffffc9000164f498 R10: ffff888094fa8d50 R11: 0000000000000286 R12: 0000000000000003 R13: 1ffff920002c9e01 R14: 000000000000001e R15: 9e0cdb600d170f00 INFO: task syz-executor027:7134 can't die for more than 146 seconds. syz-executor027 R running task 23264 7134 7128 0x00004006 Call Trace: INFO: task syz-executor027:7136 can't die for more than 147 seconds. syz-executor027 R running task 24128 7136 7129 0x00004006 Call Trace: instrument_atomic_write include/linux/instrumented.h:71 [inline] atomic_try_cmpxchg include/asm-generic/atomic-instrumented.h:695 [inline] queued_spin_lock include/asm-generic/qspinlock.h:78 [inline] do_raw_spin_lock+0x129/0x2e0 kernel/locking/spinlock_debug.c:113 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:50 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock+0x36/0x40 kernel/locking/spinlock.c:183 preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:4346 retint_kernel+0x1b/0x2b RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:759 [inline] RIP: 0010:seqcount_lockdep_reader_access include/linux/seqlock.h:99 [inline] RIP: 0010:read_seqcount_begin include/linux/seqlock.h:182 [inline] RIP: 0010:read_seqbegin include/linux/seqlock.h:466 [inline] RIP: 0010:zone_span_seqbegin include/linux/memory_hotplug.h:80 [inline] RIP: 0010:page_outside_zone_boundaries mm/page_alloc.c:569 [inline] RIP: 0010:bad_range+0x10a/0x3c0 mm/page_alloc.c:598 Code: Bad RIP value. RSP: 167f3b0:ffffffff81597850 EFLAGS: ffffffff89493ea8 ORIG_RAX: 0000000000000002 RAX: 0000000000000007 RBX: 0000000000000000 RCX: ffffffff81590fcb RDX: 00000000000005f8 RSI: ffffffff81588a6d RDI: 1ffff920002cfe4d RBP: 0000000000000400 R08: 0000000894abcdf8 R09: 0000000000002201 R10: ffffffff81cbb332 R11: ffff88808a9d1280 R12: 0000000000000400 R13: 0000000000002201 R14: ffffffff814f15aa R15: 0000000000000018 INFO: task syz-executor027:7137 can't die for more than 149 seconds. syz-executor027 R running task 23824 7137 7127 0x00004006 Call Trace: INFO: task syz-executor027:7139 can't die for more than 150 seconds. syz-executor027 R running task 24128 7139 7125 0x00004006 Call Trace: Showing all locks held in the system: 1 lock held by khungtaskd/1118: #0: ffffffff899befc0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:5754 1 lock held by kswapd0/1905: 1 lock held by in:imklog/6970: #0: ffff88809e490df0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:826 2 locks held by syz-executor027/7130: 3 locks held by syz-executor027/7133: 4 locks held by syz-executor027/7134: 2 locks held by syz-executor027/7136: 3 locks held by syz-executor027/7137: 3 locks held by syz-executor027/7139: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1118 Comm: khungtaskd Not tainted 5.7.0-rc1-next-20200415-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x70/0xb1 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x231/0x27e lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:147 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:249 [inline] watchdog+0xde3/0x14e0 kernel/hung_task.c:333 kthread+0x388/0x470 kernel/kthread.c:268 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4185 Comm: systemd-journal Not tainted 5.7.0-rc1-next-20200415-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__sanitizer_cov_trace_pc+0x31/0x60 kernel/kcov.c:197 Code: 02 00 65 8b 15 28 ea 8e 7e f7 c2 00 01 1f 00 48 8b 34 24 74 0f 80 e6 01 74 35 8b 90 04 14 00 00 85 d2 74 2b 8b 90 e0 13 00 00 <83> fa 02 75 20 48 8b 88 e8 13 00 00 8b 80 e4 13 00 00 48 8b 11 48 RSP: 0018:ffffc900015ffca0 EFLAGS: 00000246 RAX: ffff8880930cc280 RBX: 000000007fff0000 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: ffffffff8173a941 RDI: ffffc900015ffe70 RBP: ffff888093dddc00 R08: ffff8880930cc280 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 R13: ffffc90000dbe000 R14: 000000007fff0000 R15: ffffc900015ffe70 FS: 00007fb7abcc28c0(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb7a908a020 CR3: 0000000093045000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: migrate_enable include/linux/preempt.h:352 [inline] bpf_prog_run_pin_on_cpu include/linux/filter.h:600 [inline] seccomp_run_filters kernel/seccomp.c:272 [inline] __seccomp_filter+0x161/0x1360 kernel/seccomp.c:817 __secure_computing+0xfc/0x360 kernel/seccomp.c:950 syscall_trace_enter+0x2a3/0xd10 arch/x86/entry/common.c:119 do_syscall_64+0x504/0x7d0 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x7fb7aaf5bf17 Code: ff ff ff 48 8b 4d a0 0f b7 51 fe 48 8b 4d a8 66 89 54 08 fe e9 1a ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 b8 27 00 00 00 0f 05 0f 1f 84 00 00 00 00 00 b8 6e 00 00 00 0f 05 c3 0f 1f 84 00 00 RSP: 002b:00007ffec1f9af38 EFLAGS: 00000202 ORIG_RAX: 0000000000000027 RAX: ffffffffffffffda RBX: 00005574608b81e0 RCX: 00007fb7aaf5bf17 RDX: 00007ffec1f9aff8 RSI: 0000000000000001 RDI: 00005574608b81e0 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000069 R11: 0000000000000202 R12: 00007ffec1f9aff8 R13: 0000000000001059 R14: 00007ffec1f9dde0 R15: 00007ffec1f9b3f0