kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 3652 Comm: syz-executor0 Not tainted 4.20.0-rc1-next-20181106+ #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop4' (000000006a2777b2): kobject_uevent_env RIP: 0010:keyctl_pkey_params_parse security/keys/keyctl_pkey.c:56 [inline] RIP: 0010:keyctl_pkey_params_get+0x2e7/0x550 security/keys/keyctl_pkey.c:96 Code: fe 48 8b 44 24 38 48 c1 e8 03 42 80 3c 28 00 0f 85 f7 01 00 00 4c 8b a4 24 e0 00 00 00 4c 89 e0 4c 89 e2 48 c1 e8 03 83 e2 07 <42> 0f b6 04 28 38 d0 7f 08 84 c0 0f 85 e0 01 00 00 41 0f b6 04 24 kobject: 'loop4' (000000006a2777b2): fill_kobj_path: path = '/devices/virtual/block/loop4' RSP: 0018:ffff88017c82fa90 EFLAGS: 00010206 RAX: 0000000000000000 RBX: ffff88017c82fd60 RCX: ffffc9000bee4000 RDX: 0000000000000005 RSI: ffffffff8344326e RDI: 0000000000000001 RBP: ffff88017c82fc00 R08: ffff8801d2efc700 R09: ffffed0038caa800 R10: ffffed0038caa801 R11: 0000000000000004 R12: 0000000000000005 R13: dffffc0000000000 R14: ffffffffffffffff R15: ffffffffffffffff FS: 00007f9e5863b700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f62d9a48169 CR3: 00000001817b6000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: keyctl_pkey_params_get_2+0x12f/0x580 security/keys/keyctl_pkey.c:130 keyctl_pkey_e_d_s+0xb0/0x4f0 security/keys/keyctl_pkey.c:218 __do_sys_keyctl security/keys/keyctl.c:1760 [inline] __se_sys_keyctl security/keys/keyctl.c:1637 [inline] __x64_sys_keyctl+0x12f/0x430 security/keys/keyctl.c:1637 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f9e5863ac78 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457569 RDX: 00000000200003c0 RSI: 00000000009419fe RDI: 0000000000000019 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000200001c0 R11: 0000000000000246 R12: 00007f9e5863b6d4 R13: 00000000004c287d R14: 00000000004d3c10 R15: 00000000ffffffff Modules linked in: kobject: 'loop2' (00000000dccdaf60): kobject_uevent_env kobject: 'gre0' (00000000d2cd0f23): kobject_uevent_env kobject: 'loop2' (00000000dccdaf60): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'gre0' (00000000d2cd0f23): fill_kobj_path: path = '/devices/virtual/net/gre0' kobject: 'loop2' (00000000dccdaf60): kobject_uevent_env kobject: 'queues' (00000000473d8489): kobject_add_internal: parent: 'gre0', set: '' kobject: 'loop1' (000000006b9d7a99): kobject_uevent_env kobject: 'loop1' (000000006b9d7a99): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000dccdaf60): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (000000006a2777b2): kobject_uevent_env kobject: 'queues' (00000000473d8489): kobject_uevent_env kobject: 'loop4' (000000006a2777b2): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'queues' (00000000473d8489): kobject_uevent_env: filter function caused the event to drop! ---[ end trace 360e9370a3a8dab1 ]--- RIP: 0010:keyctl_pkey_params_parse security/keys/keyctl_pkey.c:56 [inline] RIP: 0010:keyctl_pkey_params_get+0x2e7/0x550 security/keys/keyctl_pkey.c:96 kobject: 'loop5' (000000005f5ea60e): kobject_uevent_env kobject: 'rx-0' (00000000cd0199d8): kobject_add_internal: parent: 'queues', set: 'queues' Code: fe 48 8b 44 24 38 48 c1 e8 03 42 80 3c 28 00 0f 85 f7 01 00 00 4c 8b a4 24 e0 00 00 00 4c 89 e0 4c 89 e2 48 c1 e8 03 83 e2 07 <42> 0f b6 04 28 38 d0 7f 08 84 c0 0f 85 e0 01 00 00 41 0f b6 04 24 kobject: 'loop5' (000000005f5ea60e): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'rx-0' (00000000cd0199d8): kobject_uevent_env kobject: 'loop4' (000000006a2777b2): kobject_uevent_env RSP: 0018:ffff88017c82fa90 EFLAGS: 00010206 kobject: 'rx-0' (00000000cd0199d8): fill_kobj_path: path = '/devices/virtual/net/gre0/queues/rx-0' kobject: 'loop4' (000000006a2777b2): fill_kobj_path: path = '/devices/virtual/block/loop4' RAX: 0000000000000000 RBX: ffff88017c82fd60 RCX: ffffc9000bee4000 RDX: 0000000000000005 RSI: ffffffff8344326e RDI: 0000000000000001 kobject: 'tx-0' (00000000a9087223): kobject_add_internal: parent: 'queues', set: 'queues' RBP: ffff88017c82fc00 R08: ffff8801d2efc700 R09: ffffed0038caa800 kobject: 'tx-0' (00000000a9087223): kobject_uevent_env R10: ffffed0038caa801 R11: 0000000000000004 R12: 0000000000000005 kobject: 'tx-0' (00000000a9087223): fill_kobj_path: path = '/devices/virtual/net/gre0/queues/tx-0' R13: dffffc0000000000 R14: ffffffffffffffff R15: ffffffffffffffff kobject: 'gretap0' (00000000083355f2): kobject_add_internal: parent: 'net', set: 'devices' FS: 00007f9e5863b700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'gretap0' (00000000083355f2): kobject_uevent_env CR2: 00007ffc618b1bd9 CR3: 00000001817b6000 CR4: 00000000001406e0 kobject: 'gretap0' (00000000083355f2): fill_kobj_path: path = '/devices/virtual/net/gretap0' DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'queues' (000000003e5583a4): kobject_add_internal: parent: 'gretap0', set: '' DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: 'loop4' (000000006a2777b2): kobject_uevent_env kobject: 'loop4' (000000006a2777b2): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000dccdaf60): kobject_uevent_env kobject: 'loop2' (00000000dccdaf60): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'queues' (000000003e5583a4): kobject_uevent_env