kasan: CONFIG_KASAN_INLINE enabled kasan: CONFIG_KASAN_INLINE enabled[ 52.847174] BUG: spinlock bad magic on CPU#1, syz-executor5/8244 lock: 0xffff8801d216c218, .magic: dead4eac, .owner: /-1, .owner_cpu: -1 CPU: 1 PID: 8244 Comm: syz-executor5 Not tainted 4.4.118-g239a415 #25 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 300998dcbd8a29eb ffff8801db3078d8 ffffffff81d0402d ffff8801d216c218 ffff8801d0470000 0000000000000001 0000000000000001 0000000000000000 ffff8801db307918 ffffffff81246aad 0000000000000000 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x124 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+0x228/0x2c0 kernel/locking/spinlock_debug.c:135 [] __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/0xbc0 drivers/scsi/sg.c:1385 [] __blk_mq_end_request+0x54/0xc0 block/blk-mq.c:311 [] scsi_end_request+0x135/0x5b0 drivers/scsi/scsi_lib.c:716 [] scsi_io_completion+0x15c3/0x1710 drivers/scsi/scsi_lib.c:918 [] scsi_finish_command+0x3af/0x520 drivers/scsi/scsi.c:607 [] scsi_softirq_done+0x250/0x350 drivers/scsi/scsi_lib.c:1654 [] blk_mq_ipi_complete_request block/blk-mq.c:356 [inline] [] __blk_mq_complete_request+0x205/0x500 block/blk-mq.c:368 [] blk_mq_complete_request+0x5b/0x70 block/blk-mq.c:387 [] scsi_mq_done+0xfb/0x3c0 drivers/scsi/scsi_lib.c:1964 [] virtscsi_complete_cmd+0x5cf/0x7f0 drivers/scsi/virtio_scsi.c:210 [] virtscsi_vq_done+0xc9/0x170 drivers/scsi/virtio_scsi.c:228 [] virtscsi_req_done+0xa7/0xd0 drivers/scsi/virtio_scsi.c:243 [] vring_interrupt+0x109/0x150 drivers/virtio/virtio_ring.c:722 [] handle_irq_event_percpu+0xf1/0x960 kernel/irq/handle.c:146 [] handle_irq_event+0xa7/0x140 kernel/irq/handle.c:194 [] handle_edge_irq+0x1fa/0x8e0 kernel/irq/chip.c:623 [] generic_handle_irq_desc include/linux/irqdesc.h:140 [inline] [] handle_irq+0x250/0x3a0 arch/x86/kernel/irq_64.c:78 [] do_IRQ+0x89/0x1b0 arch/x86/kernel/irq.c:239 [] common_interrupt+0xa0/0xa0 arch/x86/entry/entry_64.S:592 [] ? ptlock_free+0x38/0x50 mm/memory.c:3910 [] ptlock_free+0x38/0x50 mm/memory.c:3910 [] pte_lock_deinit include/linux/mm.h:1545 [inline] [] pgtable_page_dtor include/linux/mm.h:1577 [inline] [] ___pte_free_tlb+0x3d/0x90 arch/x86/mm/pgtable.c:57 [] __pte_free_tlb arch/x86/include/asm/pgalloc.h:59 [inline] [] free_pte_range mm/memory.c:397 [inline] [] free_pmd_range mm/memory.c:415 [inline] [] free_pud_range mm/memory.c:449 [inline] [] free_pgd_range+0x53c/0x9a0 mm/memory.c:525 [] free_pgtables+0x270/0x330 mm/memory.c:557 [] exit_mmap+0x1e3/0x3a0 mm/mmap.c:2928 [] __mmput kernel/fork.c:715 [inline] [] mmput+0xf8/0x2d0 kernel/fork.c:735 [] exit_mm kernel/exit.c:440 [inline] [] do_exit+0x714/0x2a10 kernel/exit.c:742 [] do_group_exit+0x108/0x320 kernel/exit.c:885 [] get_signal+0x4f2/0x1550 kernel/signal.c:2317 [] do_signal+0x8b/0x1d40 arch/x86/kernel/signal.c:712 [] exit_to_usermode_loop+0x11a/0x160 arch/x86/entry/common.c:248 [] prepare_exit_to_usermode arch/x86/entry/common.c:283 [inline] [] syscall_return_slowpath+0x1b5/0x1f0 arch/x86/entry/common.c:348 [] int_ret_from_sys_call+0x25/0xa3 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: 8243 Comm: syz-executor1 Not tainted 4.4.118-g239a415 #25 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801d0476000 task.stack: ffff8801c4ae8000 RIP: 0010:[] [] __read_once_size include/linux/compiler.h:218 [inline] RIP: 0010:[] [] atomic_read arch/x86/include/asm/atomic.h:27 [inline] RIP: 0010:[] [] put_page_testzero include/linux/mm.h:357 [inline] RIP: 0010:[] [] __free_pages+0x21/0x90 mm/page_alloc.c:3365 RSP: 0018:ffff8801c4aef9f0 EFLAGS: 00010a07 RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b855b RDX: 1bd5a9d5a0000003 RSI: 0000000000000006 RDI: dead4ead0000001c RBP: ffff8801c4aefa00 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004 R13: 0000000000000020 R14: ffff8801c4a80000 R15: dffffc0000000000 FS: 00007f0d2533e700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc2a6f6fc8 CR3: 00000000b604a000 CR4: 0000000000160670 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: 0000000000000000 ffff8801c4a80158 ffff8801c4aefa60 ffffffff825b8581 ffff8801c4a80170 ffffed003895002b ffffed003895002e ffff8801c4a80168 dead4ead00000000 ffff8801c4a80140 0000000000000000 0000000000000000 Call Trace: [] sg_remove_scat.isra.17+0x1c1/0x2d0 drivers/scsi/sg.c:1954 [] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1835 [] sg_new_read.isra.18+0x39/0x3c0 drivers/scsi/sg.c:577 [] sg_read+0x8bc/0x1490 drivers/scsi/sg.c:466 [] do_loop_readv_writev+0x141/0x1e0 fs/read_write.c:680 [] do_readv_writev+0x5dd/0x6e0 fs/read_write.c:810 [] vfs_readv+0x78/0xb0 fs/read_write.c:834 [] SYSC_readv fs/read_write.c:860 [inline] [] SyS_readv+0xd9/0x240 fs/read_write.c:852 [] entry_SYSCALL_64_fastpath+0x1c/0x98 Code: c6 a0 0c 00 e9 78 fd ff ff 90 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 49 RIP [] __read_once_size include/linux/compiler.h:218 [inline] RIP [] atomic_read arch/x86/include/asm/atomic.h:27 [inline] RIP [] put_page_testzero include/linux/mm.h:357 [inline] RIP [] __free_pages+0x21/0x90 mm/page_alloc.c:3365 RSP ---[ end trace 8102bc231103e921 ]---