kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 12208 Comm: syz-executor4 Not tainted 4.20.0-rc6+ #346 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:strcmp+0x5a/0xb0 lib/string.c:329 Code: c1 e8 03 83 e2 07 42 0f b6 04 30 38 d0 7f 04 84 c0 75 55 41 0f b6 5c 24 ff 4c 8d 6e 01 48 89 f0 48 89 f2 48 c1 e8 03 83 e2 07 <42> 0f b6 04 30 38 d0 7f 04 84 c0 75 27 41 3a 5d ff 74 ae 19 c0 48 RSP: 0000:ffff8881dae06c18 EFLAGS: 00010046 RAX: 000000001ffffbff RBX: 0000000000000026 RCX: 1ffffffff1599547 RDX: 0000000000000000 RSI: 00000000ffffdff8 RDI: ffffffff8860e380 RBP: ffff8881dae06c40 R08: 0000000000000000 R09: 0000000000000000 R10: ffffed103b5c0df7 R11: 0000000000000003 R12: ffffffff8860e381 R13: 00000000ffffdff9 R14: dffffc0000000000 R15: dffffc0000000000 FS: 0000000001265940(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000040d3d0 CR3: 00000001c11fd000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: count_matching_names kernel/locking/lockdep.c:642 [inline] register_lock_class+0x11ba/0x29b0 kernel/locking/lockdep.c:795 __lock_acquire+0x184/0x4c20 kernel/locking/lockdep.c:3227 lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2d/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] __queue_work+0xc1b/0x1440 kernel/workqueue.c:1414 delayed_work_timer_fn+0x5d/0x90 kernel/workqueue.c:1500 call_timer_fn+0x272/0x920 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1359 [inline] __run_timers+0x723/0xc70 kernel/time/timer.c:1682 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695 __do_softirq+0x308/0xb7e kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:__sanitizer_cov_trace_pc+0x4b/0x50 kernel/kcov.c:111 Code: 90 d8 12 00 00 83 fa 02 75 20 48 8b 88 e0 12 00 00 8b 80 dc 12 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 <5d> c3 0f 1f 00 55 40 0f b6 d6 40 0f b6 f7 31 ff 48 89 e5 48 8b 4d RSP: 0000:ffff888190e77510 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff888190e8e040 RBX: 0000000000000001 RCX: ffffffff819d8d93 RDX: 0000000000000000 RSI: ffffffff819d8d9c RDI: 0000000000000005 RBP: ffff888190e77510 R08: ffff888190e8e040 R09: ffffed103b5c5b5f R10: 0000000000000004 R11: ffff8881dae2dafb R12: ffffea0006f51600 R13: ffff888190e775f0 R14: ffff888190e77950 R15: dffffc0000000000 xa_entry include/linux/xarray.h:848 [inline] xas_next_entry include/linux/xarray.h:1273 [inline] filemap_map_pages+0xbcc/0x1a20 mm/filemap.c:2549 do_fault_around mm/memory.c:3369 [inline] do_read_fault mm/memory.c:3403 [inline] do_fault mm/memory.c:3534 [inline] handle_pte_fault mm/memory.c:3765 [inline] __handle_mm_fault+0x45a6/0x5be0 mm/memory.c:3889 handle_mm_fault+0x54f/0xc70 mm/memory.c:3926 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline] __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1143 RIP: 0033:0x40d3d0 Code: Bad RIP value. RSP: 002b:00007ffe33c91778 EFLAGS: 00010202 RAX: 0000000000a44cc8 RBX: 00007ffe33c91780 RCX: 0000000000411e93 RDX: 000000000040d3d0 RSI: 0000000000000018 RDI: 0000000001265c20 RBP: 00007ffe33c917c0 R08: 0000000000000001 R09: 0000000001265940 R10: 0000000001265c10 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000004 Modules linked in: ---[ end trace 72fb8f49ce1ec3b3 ]--- RIP: 0010:strcmp+0x5a/0xb0 lib/string.c:329 Code: c1 e8 03 83 e2 07 42 0f b6 04 30 38 d0 7f 04 84 c0 75 55 41 0f b6 5c 24 ff 4c 8d 6e 01 48 89 f0 48 89 f2 48 c1 e8 03 83 e2 07 <42> 0f b6 04 30 38 d0 7f 04 84 c0 75 27 41 3a 5d ff 74 ae 19 c0 48 RSP: 0000:ffff8881dae06c18 EFLAGS: 00010046 RAX: 000000001ffffbff RBX: 0000000000000026 RCX: 1ffffffff1599547 RDX: 0000000000000000 RSI: 00000000ffffdff8 RDI: ffffffff8860e380 RBP: ffff8881dae06c40 R08: 0000000000000000 R09: 0000000000000000 R10: ffffed103b5c0df7 R11: 0000000000000003 R12: ffffffff8860e381 R13: 00000000ffffdff9 R14: dffffc0000000000 R15: dffffc0000000000 FS: 0000000001265940(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000040d3a6 CR3: 00000001c11fd000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400