kasan: CONFIG_KASAN_INLINE enabled netlink: 11 bytes leftover after parsing attributes in process `syz-executor2'. 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: 0 PID: 6559 Comm: syz-executor4 Not tainted 4.9.76-g9154940 #20 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801c9196000 task.stack: ffff8801c72a8000 audit: type=1400 audit(1515646046.209:37): avc: denied { read } for pid=6593 comm="syz-executor2" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 RIP: 0010:[] [] sg_read_oxfer drivers/scsi/sg.c:1976 [inline] RIP: 0010:[] [] sg_read+0xd0c/0x1440 drivers/scsi/sg.c:520 RSP: 0018:ffff8801c72afb60 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff826688c3 RDX: 0000000000000000 RSI: ffffc90002fd2000 RDI: ffff8801c8bb4370 RBP: ffff8801c72afc68 R08: 0000000000000000 R09: ffffed0039278c4d R10: 0000000000000005 R11: ffffed0039278c4c R12: 0000000000001000 R13: 0000000000000000 R14: ffff8801c93c6240 R15: ffff8801c8bb4340 FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f6ff6b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f6f77db0 CR3: 00000001c75d2000 CR4: 0000000000160670 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffffffff83d6d100 000000000000013b ffff8801c8bb4358 1ffff100000000bb 37a989887a2ff733 ffff8801c8bb4368 00000000000000df 0000000000000000 ffff8801d15f2500 1ffff10038e55f78 00000000201bcff8 00000000201bd01c Call Trace: [] __vfs_read+0x103/0x670 fs/read_write.c:452 [] vfs_read+0x11e/0x380 fs/read_write.c:475 [] SYSC_read fs/read_write.c:591 [inline] [] SyS_read+0xd9/0x1b0 fs/read_write.c:584 [] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline] [] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384 [] entry_SYSENTER_compat+0x74/0x83 arch/x86/entry/entry_64_compat.S:127 Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 8a 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 df 05 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+0xd0c/0x1440 drivers/scsi/sg.c:520 RSP ---[ end trace 6bab192f6893bd8d ]--- Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..