H H H 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 Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 17816 Comm: syz-executor6 Not tainted 4.9.58-gf108c7d #70 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801cae19800 task.stack: ffff8801d0220000 RIP: 0010:[] [] __read_once_size include/linux/compiler.h:243 [inline] [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] [] page_ref_count include/linux/page_ref.h:66 [inline] [] put_page_testzero include/linux/mm.h:445 [inline] [] __free_pages+0x21/0x80 mm/page_alloc.c:3901 RSP: 0018:ffff8801d02279b0 EFLAGS: 00010a07 RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffc90003a71000 RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c RBP: ffff8801d02279c0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: ffff8801cae19800 R12: 0000000000000004 R13: 0000000000000020 R14: ffff8801cf254200 R15: dffffc0000000000 FS: 00007f55a463c700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000715388 CR3: 00000001c8aca000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8801cae19800 ffff8801cf254358 ffff8801d0227a20 ffffffff8265fcb1[ 114.900251] ffff8801cf254370 ffffed0039e4a86b ffffed0039e4a86e ffff8801cf254368[ 114.900262] dead4ead00000000 ffff8801cf254340 0000000000000000 0000000000000000[ 114.900272] 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 [] 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 [] do_readv+0xe6/0x250 fs/read_write.c:924 [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 [] 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 [ 114.900642] RIP [] __read_once_size include/linux/compiler.h:243 [inline] [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] [] page_ref_count include/linux/page_ref.h:66 [inline] [] put_page_testzero include/linux/mm.h:445 [inline] [] __free_pages+0x21/0x80 mm/page_alloc.c:3901 ---[ end trace 43a90d04be46d413 ]--- Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..