random: sshd: uninitialized urandom read (32 bytes read, 83 bits of entropy available) sg_write: data in/out 1219236422/100 bytes for SCSI command 0xc4-- guessing data in; program syzkaller415849 not setting count and/or reply_len properly kasan: CONFIG_KASAN_INLINE enabled kasan: 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: 1 PID: 3323 Comm: syzkaller415849 Not tainted 4.4.107-g610c835 #12 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8800b498c740 task.stack: ffff8800b1170000 RIP: 0010:[] [] sg_read_oxfer drivers/scsi/sg.c:1986 [inline] RIP: 0010:[] [] sg_read+0xd1d/0x1490 drivers/scsi/sg.c:531 RSP: 0018:ffff8800b1177600 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff825bb194 RDX: 0000000000000000 RSI: ffff8801d222a024 RDI: ffff8801d1348170 RBP: ffff8800b1177708 R08: 0000000000000000 R09: ffff8800b400fba0 R10: 0000000000000005 R11: ffffed0016801f78 R12: 0000000000000fdc R13: 0000000000000000 R14: ffff8800b400fba0 R15: ffff8801d1348140 FS: 0000000001cf5880(0063) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020df7000 CR3: 00000001d2ad5000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: 0000000000000000 000077ff80000000 ffff8800b1177660 ffff8801d1348158 ffffffff810002b8 ffff8801d1348168 0000000000001000 0000000000000010 ffff8800b7e3d180 ffff880100001000 1ffff1001622eecc ffff8801d222a024 Call Trace: [] ? 0xffffffff810002b8 [] 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 [] kernel_readv fs/splice.c:586 [inline] [] default_file_splice_read+0x4fa/0x8e0 fs/splice.c:662 [] do_splice_to+0xf5/0x140 fs/splice.c:1154 [] do_splice fs/splice.c:1427 [inline] [] SYSC_splice fs/splice.c:1707 [inline] [] SyS_splice+0x1009/0x14b0 fs/splice.c:1690 [] entry_SYSCALL_64_fastpath+0x16/0x76 Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 97 06 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 6b 06 00 00 48 8b 1b 48 85 db 0f 84 3b 03 00 RIP [] sg_read_oxfer drivers/scsi/sg.c:1986 [inline] RIP [] sg_read+0xd1d/0x1490 drivers/scsi/sg.c:531 RSP ---[ end trace 7d7b0187983fe8af ]--- Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..