kasan: CONFIG_KASAN_INLINE enabled BUG: spinlock bad magic on CPU#0, syz-executor6/11203 lock: 0xffff8801c43c4218, .magic: dead4eac, .owner: /-1, .owner_cpu: -1 CPU: 0 PID: 11203 Comm: syz-executor6 Not tainted 4.9.60-gdfe0a9b #81 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801db207730 ffffffff81d91389 ffff8801c43c4218 ffff8801c4274800 0000000000000001 0000000000000001 0000000000000000 ffff8801db207770 ffffffff8124856d ffffffff812238ae 0000000000000000 0000000000000000 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] spin_dump+0x14d/0x280 kernel/locking/spinlock_debug.c:67 [] spin_bug kernel/locking/spinlock_debug.c:75 [inline] [] debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline] [] do_raw_spin_lock+0x174/0x1e0 kernel/locking/spinlock_debug.c:112 [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline] [] _raw_spin_lock_irqsave+0x56/0x70 kernel/locking/spinlock.c:159 [] __wake_up+0x1e/0x50 kernel/sched/wait.c:94 [] sg_rq_end_io+0x5dc/0xbb0 drivers/scsi/sg.c:1386 [] __blk_mq_end_request+0x54/0xc0 block/blk-mq.c:331 [] scsi_end_request+0x135/0x5c0 drivers/scsi/scsi_lib.c:627 [] scsi_io_completion+0x15de/0x1730 drivers/scsi/scsi_lib.c:829 [] scsi_finish_command+0x3b8/0x530 drivers/scsi/scsi.c:607 [] scsi_softirq_done+0x250/0x350 drivers/scsi/scsi_lib.c:1567 [] blk_mq_ipi_complete_request block/blk-mq.c:376 [inline] [] __blk_mq_complete_request+0x205/0x4b0 block/blk-mq.c:388 [] blk_mq_complete_request+0x65/0x80 block/blk-mq.c:407 [] scsi_mq_done+0xce/0x320 drivers/scsi/scsi_lib.c:1877 [] virtscsi_complete_cmd+0x5cf/0x7f0 drivers/scsi/virtio_scsi.c:211 [] virtscsi_vq_done+0xc9/0x170 drivers/scsi/virtio_scsi.c:229 [] virtscsi_req_done+0xa7/0xd0 drivers/scsi/virtio_scsi.c:244 [] vring_interrupt+0x109/0x150 drivers/virtio/virtio_ring.c:909 [] __handle_irq_event_percpu+0xef/0x800 kernel/irq/handle.c:145 [] handle_irq_event_percpu+0x74/0x150 kernel/irq/handle.c:185 [] handle_irq_event+0xa7/0x140 kernel/irq/handle.c:202 [] handle_edge_irq+0x1fa/0x8e0 kernel/irq/chip.c:665 [] generic_handle_irq_desc include/linux/irqdesc.h:150 [inline] [] handle_irq+0x24e/0x3b0 arch/x86/kernel/irq_64.c:76 [] do_IRQ+0x89/0x1b0 arch/x86/kernel/irq.c:239 [] common_interrupt+0x8c/0x8c arch/x86/entry/entry_64.S:520 [] invoke_softirq kernel/softirq.c:364 [inline] [] irq_exit+0x165/0x190 kernel/softirq.c:405 [] exiting_irq arch/x86/include/asm/apic.h:659 [inline] [] smp_apic_timer_interrupt+0x7b/0xa0 arch/x86/kernel/apic/apic.c:960 [] apic_timer_interrupt+0x8c/0xa0 arch/x86/entry/entry_64.S:709 [] spin_unlock_irqrestore include/linux/spinlock.h:362 [inline] [] quarantine_reduce+0x191/0x1d0 mm/kasan/quarantine.c:236 [] kasan_kmalloc+0xca/0xe0 mm/kasan/kasan.c:583 [] kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537 [] slab_post_alloc_hook mm/slab.h:417 [inline] [] slab_alloc_node mm/slub.c:2715 [inline] [] slab_alloc mm/slub.c:2723 [inline] [] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 [] __split_vma.isra.42+0x171/0x750 mm/mmap.c:2554 [] do_munmap+0x24a/0xeb0 mm/mmap.c:2667 [] mmap_region+0x14d/0xfd0 mm/mmap.c:1635 [] do_mmap+0x57b/0xbe0 mm/mmap.c:1473 [] do_mmap_pgoff include/linux/mm.h:2014 [inline] [] vm_mmap_pgoff+0x16b/0x1b0 mm/util.c:305 [] SYSC_mmap_pgoff mm/mmap.c:1523 [inline] [] SyS_mmap_pgoff+0xd0/0x560 mm/mmap.c:1481 [] SYSC_mmap arch/x86/kernel/sys_x86_64.c:95 [inline] [] SyS_mmap+0x16/0x20 arch/x86/kernel/sys_x86_64.c:86 [] entry_SYSCALL_64_fastpath+0x23/0xc6 kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 11226 Comm: syz-executor1 Not tainted 4.9.60-gdfe0a9b #81 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801c43ec800 task.stack: ffff8801c0c28000 RIP: 0010:[] [] __read_once_size include/linux/compiler.h:243 [inline] RIP: 0010:[] [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] RIP: 0010:[] [] page_ref_count include/linux/page_ref.h:66 [inline] RIP: 0010:[] [] put_page_testzero include/linux/mm.h:445 [inline] RIP: 0010:[] [] __free_pages+0x21/0x80 mm/page_alloc.c:3901 RSP: 0018:ffff8801c0c2fab0 EFLAGS: 00010a07 RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: 1ffff10038182003 RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c RBP: ffff8801c0c2fac0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004 R13: 0000000000000020 R14: ffff8801c0c10000 R15: dffffc0000000000 FS: 00007f016c8e1700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020def000 CR3: 00000001c4198000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8801c43ec800 ffff8801c0c10158 ffff8801c0c2fb20 ffffffff8265fab1 ffff8801c0c10170 ffffed003818202b ffffed003818202e ffff8801c0c10168 dead4ead00000000 ffff8801c0c10140 0000000000000000 0000000000000000 Call Trace: [] sg_remove_scat.isra.20+0x1c1/0x2d0 drivers/scsi/sg.c:1954 [] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1836 [] sg_new_read.isra.21+0x39/0x3e0 drivers/scsi/sg.c:567 [] sg_read+0x8a6/0x1400 drivers/scsi/sg.c:456 [] __vfs_read+0x103/0x670 fs/read_write.c:452 [] vfs_read+0x107/0x330 fs/read_write.c:475 [] SYSC_read fs/read_write.c:591 [inline] [] SyS_read+0xd9/0x1b0 fs/read_write.c:584 [] entry_SYSCALL_64_fastpath+0x23/0xc6 Code: ff 66 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 3d RIP [] __read_once_size include/linux/compiler.h:243 [inline] RIP [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] RIP [] page_ref_count include/linux/page_ref.h:66 [inline] RIP [] put_page_testzero include/linux/mm.h:445 [inline] RIP [] __free_pages+0x21/0x80 mm/page_alloc.c:3901 RSP ---[ end trace 160a9f0184abf71e ]---