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: 9686 Comm: syz-executor2 Not tainted 4.9.81-ga25ea24 #36 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801d50ab000 task.stack: ffff8801af998000 RIP: 0010:[] [] sg_remove_scat.isra.19+0x17b/0x2d0 drivers/scsi/sg.c:1939 RSP: 0018:ffff8801af99f9c0 EFLAGS: 00010202 RAX: 1ffff1003b16d44d RBX: ffff8801d8b6a258 RCX: 0000000000000001 RDX: 0000000000000008 RSI: ffffc9000239e000 RDI: ffff8801cfc9d9f4 RBP: ffff8801af99fa10 R08: 0000000000000000 R09: ffffed00372a813d R10: 0000000000000005 R11: ffffed00372a813c R12: 0000000000000001 R13: 0000000000000008 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f54fd4c9700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd7e90d2db8 CR3: 00000001ba7fa000 CR4: 0000000000160670 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8801d8b6a270 ffffed003b16d44b ffffed003b16d44e ffff8801d8b6a268 ffff8801cfc9d9d8 ffff8801d8b6a240 0000000000000000 0000000000000000 0000000000000000 ffff8801d8b6a338 ffff8801af99fa50 ffffffff826687f5 Call Trace: [] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1825 [] sg_read+0xa16/0x1440 drivers/scsi/sg.c:526 [] 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 [] do_syscall_64+0x1a5/0x490 arch/x86/entry/common.c:282 [] entry_SYSCALL_64_after_swapgs+0x47/0xc5 Code: 45 b8 eb 3e e8 b7 2f d0 fe 48 8b 45 c8 48 c1 e8 03 42 80 3c 38 00 0f 85 3a 01 00 00 4c 8b 73 10 4b 8d 14 2e 48 89 d1 48 c1 e9 03 <42> 80 3c 39 00 0f 85 0b 01 00 00 48 8b 12 49 83 c5 08 48 85 d2 RIP [] sg_remove_scat.isra.19+0x17b/0x2d0 drivers/scsi/sg.c:1939 RSP ---[ end trace 1bb6d6099d5fe856 ]--- device lo entered promiscuous mode device lo left promiscuous mode Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..