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: 10989 Comm: syz-executor1 Not tainted 4.9.57-g9eaaf14 #69 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801c9d3c800 task.stack: ffff8801c7330000 RIP: 0010:[] [] sg_read_oxfer drivers/scsi/sg.c:1976 [inline] RIP: 0010:[] [] sg_read+0xcc1/0x1400 drivers/scsi/sg.c:520 RSP: 0018:ffff8801c7337700 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 000000000000000c RDX: 0000000000000000 RSI: 0000000000000fdc RDI: ffff8801cf7b8170 RBP: ffff8801c7337808 R08: 0000000000000000 R09: ffffed003848d585 R10: 0000000000000005 R11: ffffed003848d584 R12: 0000000000001000 R13: 0000000000000000 R14: ffff8801c246ac00 R15: ffff8801cf7b8140 FS: 00007fd84d07e700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff31fab52e0 CR3: 00000001ce36a000 CR4: 00000000001406e0 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: 0000000000000100 ffffea000741a600 ffff8801cf7b8158 ffffea0000000fdc ffff8801c7337770 ffff8801cf7b8168 0000000000001000 0000000000000246 ffff8801d1bfe500 1ffff10038e66eec ffff8801c6736000 ffff8801c6736024 Call Trace: [] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714 [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 [] kernel_readv fs/splice.c:363 [inline] [] default_file_splice_read+0x43f/0x7a0 fs/splice.c:435 [] do_splice_to+0x10a/0x160 fs/splice.c:899 [] do_splice fs/splice.c:1192 [inline] [] SYSC_splice fs/splice.c:1416 [inline] [] SyS_splice+0xf5f/0x1520 fs/splice.c:1399 [] entry_SYSCALL_64_fastpath+0x23/0xc6 Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 19 07 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 28 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 ed 06 00 00 48 8b 1b 48 85 db 0f 84 51 03 00 RIP [] sg_read_oxfer drivers/scsi/sg.c:1976 [inline] RIP [] sg_read+0xcc1/0x1400 drivers/scsi/sg.c:520 RSP general protection fault: 0000 [#2] PREEMPT SMP KASAN Dumping ftrace buffer: ---[ end trace b61dc58fe85ef9b0 ]--- Kernel panic - not syncing: Fatal exception (ftrace buffer empty) Modules linked in: CPU: 0 PID: 11059 Comm: syz-executor4 Tainted: G D 4.9.57-g9eaaf14 #69 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801d1378000 task.stack: ffff8801cfbd0000 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:ffff8801cfbd75f0 EFLAGS: 00010a07 RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: 1ffff100380c2423 RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c RBP: ffff8801cfbd7600 R08: ffffed00380c245a R09: ffffed00380c245a R10: 000000000000000b R11: ffffed00380c2459 R12: 0000000000000004 R13: 0000000000000020 R14: ffff8801c0612100 R15: dffffc0000000000 FS: 00007ff3eb170700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020327000 CR3: 00000001c6c20000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8801d1378000 ffff8801c0612258 ffff8801cfbd7660 ffffffff826601f1 ffff8801c0612270 ffffed00380c244b ffffed00380c244e ffff8801c0612268 dead4ead00000000 ffff8801c0612240 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+0x356/0x3e0 drivers/scsi/sg.c:567 [] sg_read+0x8a6/0x1400 drivers/scsi/sg.c:456 [] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714 [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 [] kernel_readv fs/splice.c:363 [inline] [] default_file_splice_read+0x43f/0x7a0 fs/splice.c:435 [] do_splice_to+0x10a/0x160 fs/splice.c:899 [] do_splice fs/splice.c:1192 [inline] [] SYSC_splice fs/splice.c:1416 [inline] [] SyS_splice+0xf5f/0x1520 fs/splice.c:1399 [] 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 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..