BUG: unable to handle kernel paging request at ffffffffffffffea #PF error: [normal kernel read fault] PGD 9874067 P4D 9874067 PUD 9876067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 12042 Comm: syz-executor2 Not tainted 5.0.0-rc4-next-20190130 #22 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:fast_dput fs/dcache.c:700 [inline] RIP: 0010:dput+0x11e/0x790 fs/dcache.c:819 Code: e8 97 2e a8 ff 45 84 ed 0f 84 e2 03 00 00 e8 49 2d a8 ff 4c 89 e0 48 c1 e8 03 0f b6 04 18 84 c0 74 08 3c 03 0f 8e f7 04 00 00 <45> 8b 2c 24 4d 8d bc 24 80 00 00 00 31 ff 41 83 e5 08 44 89 ee e8 RSP: 0018:ffff88805f117740 EFLAGS: 00010246 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffc9000a22d000 RDX: 0000000000000585 RSI: ffffffff81d9ec07 RDI: 0000000000000001 RBP: ffff88805f1177d8 R08: ffff88806182a2c0 R09: ffffed1015cc5b80 R10: ffffed1015cc5b7f R11: ffff8880ae62dbfb R12: ffffffffffffffea R13: 0000000000000001 R14: 1ffff1100be22eea R15: ffff88805f1178a0 FS: 00007f6c49d17700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffea CR3: 000000008bbc9000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_blk_trace_setup+0x8e9/0xdb0 kernel/trace/blktrace.c:561 __blk_trace_setup+0xe3/0x190 kernel/trace/blktrace.c:577 blk_trace_ioctl+0x170/0x300 kernel/trace/blktrace.c:716 blkdev_ioctl+0x141/0x2120 block/ioctl.c:591 block_ioctl+0xee/0x130 fs/block_dev.c:1914 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0x107b/0x17d0 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458089 Code: 6d b7 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f6c49d16c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458089 RDX: 00000000200002c0 RSI: 00000000c0481273 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6c49d176d4 R13: 00000000004bf54d R14: 00000000004d0e38 R15: 00000000ffffffff Modules linked in: CR2: ffffffffffffffea ---[ end trace b28f34a478579127 ]--- RIP: 0010:fast_dput fs/dcache.c:700 [inline] RIP: 0010:dput+0x11e/0x790 fs/dcache.c:819 Code: e8 97 2e a8 ff 45 84 ed 0f 84 e2 03 00 00 e8 49 2d a8 ff 4c 89 e0 48 c1 e8 03 0f b6 04 18 84 c0 74 08 3c 03 0f 8e f7 04 00 00 <45> 8b 2c 24 4d 8d bc 24 80 00 00 00 31 ff 41 83 e5 08 44 89 ee e8 RSP: 0018:ffff88805f117740 EFLAGS: 00010246 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffc9000a22d000 RDX: 0000000000000585 RSI: ffffffff81d9ec07 RDI: 0000000000000001 RBP: ffff88805f1177d8 R08: ffff88806182a2c0 R09: ffffed1015cc5b80 R10: ffffed1015cc5b7f R11: ffff8880ae62dbfb R12: ffffffffffffffea R13: 0000000000000001 R14: 1ffff1100be22eea R15: ffff88805f1178a0 FS: 00007f6c49d17700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffea CR3: 000000008bbc9000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400