kasan: CONFIG_KASAN_INLINE enabled[ 63.846119] BUG: spinlock bad magic on CPU#0, syz-executor4/10663 lock: 0xffff8800b91ca118, .magic: dead4eac, .owner: /-1, .owner_cpu: -1 CPU: 0 PID: 10663 Comm: syz-executor4 Not tainted 4.4.120-gd63fdf6 #29 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 765ba0d088f970d5 ffff8801d6e16f38 ffffffff81d0408d ffff8800b91ca118 ffff8801d6879800 0000000000000001 0000000000000001 0000000000000000 ffff8801d6e16f78 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 [] scsi_dispatch_cmd+0x2b0/0xae0 drivers/scsi/scsi_lib.c:1735 [] scsi_queue_rq+0x1179/0x1a00 drivers/scsi/scsi_lib.c:2011 [] __blk_mq_run_hw_queue+0x739/0xcd0 block/blk-mq.c:779 [] blk_mq_run_hw_queue+0xf3/0x190 block/blk-mq.c:867 [] blk_mq_insert_request+0x261/0x320 block/blk-mq.c:1015 [] blk_execute_rq_nowait+0x123/0x310 block/blk-exec.c:68 [] sg_common_write.isra.21+0xcb3/0x18c0 drivers/scsi/sg.c:816 [] sg_new_write.isra.24+0x5c1/0x920 drivers/scsi/sg.c:759 [] sg_ioctl+0x16fb/0x29f0 drivers/scsi/sg.c:900 [] vfs_ioctl fs/ioctl.c:43 [inline] [] do_vfs_ioctl+0x7aa/0xee0 fs/ioctl.c:607 [] SYSC_ioctl fs/ioctl.c:622 [inline] [] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:613 [] sg_ioctl_trans fs/compat_ioctl.c:352 [inline] [] do_ioctl_trans fs/compat_ioctl.c:1454 [inline] [] C_SYSC_ioctl fs/compat_ioctl.c:1605 [inline] [] compat_SyS_ioctl+0x2178/0x2540 fs/compat_ioctl.c:1544 [] do_syscall_32_irqs_on arch/x86/entry/common.c:392 [inline] [] do_fast_syscall_32+0x321/0x8a0 arch/x86/entry/common.c:459 [] sysenter_flags_fixed+0xd/0x17 kasan: CONFIG_KASAN_INLINE enabledkasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 10688 Comm: syz-executor1 Not tainted 4.4.120-gd63fdf6 #29 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8800ba098000 task.stack: ffff8800bbbd8000 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:ffff8800bbbdfa40 EFLAGS: 00010a07 RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b85eb RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c RBP: ffff8800bbbdfa50 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 1ffff1001777bf26 R12: 0000000000000004 R13: 0000000000000020 R14: ffff8801c3532100 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f6effb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000081163b4 CR3: 00000000afd52000 CR4: 0000000000160670 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: 0000000000000246 ffff8801c3532258 ffff8800bbbdfab0 ffffffff825b8611 ffff8801c3532270 ffffed00386a644b ffffed00386a644e ffff8801c3532268 dead4ead00000000 ffff8801c3532240 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+0x336/0x3c0 drivers/scsi/sg.c:577 [] sg_read+0x8bc/0x1490 drivers/scsi/sg.c:466 [] __vfs_read+0x103/0x440 fs/read_write.c:432 [] vfs_read+0x123/0x3a0 fs/read_write.c:454 [] SYSC_read fs/read_write.c:569 [inline] [] SyS_read+0xd9/0x1b0 fs/read_write.c:562 [] do_syscall_32_irqs_on arch/x86/entry/common.c:392 [inline] [] do_fast_syscall_32+0x321/0x8a0 arch/x86/entry/common.c:459 [] sysenter_flags_fixed+0xd/0x17 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 ead229cb0aae8de0 ]---