RSP: 002b:00007fa575bd6a88 EFLAGS: 00000246 ORIG_RAX: 000000000000013f RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004582b9 RDX: 0000000000000010 RSI: 0000000000000000 RDI: 00000000004bd207 RBP: 000000000073bf00 R08: fe03f80fe03f80ff R09: 00000000fbad8001 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa575bd76d4 R13: 00000000004c6b57 R14: 00000000004dc518 R15: 0000000000000003 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 8774 Comm: syz-executor.0 Not tainted 5.1.0-rc3-next-20190408 #20 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:d_alloc_pseudo+0x33/0x70 fs/dcache.c:1752 Code: 41 54 49 89 fc 48 83 ec 08 e8 39 d9 b7 ff 4c 89 ee 4c 89 e7 e8 1e f1 ff ff 48 ba 00 00 00 00 00 fc ff df 48 89 c1 48 c1 e9 03 <0f> b6 14 11 84 d2 74 05 80 fa 03 7e 10 81 08 00 00 00 40 48 83 c4 RSP: 0018:ffff88805814fd00 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 1ffff1100b029fa8 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffffffff81b8a01f RDI: 0000000000000282 RBP: ffff88805814fd18 R08: ffff8880580725c0 R09: ffffed1015d05bc8 R10: ffffed1015d05bc7 R11: ffff8880ae82de3b R12: ffff8880aa38c740 R13: ffff88805814fd60 R14: ffff8880aa1d7a28 R15: ffff88808da23140 FS: 00007fa575bd7700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 00000000901e1000 CR4: 00000000001406f0 Call Trace: alloc_file_pseudo+0xe2/0x280 fs/file_table.c:224 __shmem_file_setup.part.0+0x108/0x2b0 mm/shmem.c:4000 __shmem_file_setup mm/shmem.c:3983 [inline] shmem_file_setup+0x66/0x90 mm/shmem.c:4030 __do_sys_memfd_create mm/memfd.c:307 [inline] __se_sys_memfd_create mm/memfd.c:250 [inline] __x64_sys_memfd_create+0x2a2/0x470 mm/memfd.c:250 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4582b9 Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa575bd6a88 EFLAGS: 00000246 ORIG_RAX: 000000000000013f RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004582b9 RDX: 0000000000000010 RSI: 0000000000000000 RDI: 00000000004bd207 RBP: 000000000073bf00 R08: fe03f80fe03f80ff R09: 00000000fbad8001 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa575bd76d4 R13: 00000000004c6b57 R14: 00000000004dc518 R15: 0000000000000003 Modules linked in: ---[ end trace 7ef06e4c6ad55bf5 ]--- RIP: 0010:d_alloc_pseudo+0x33/0x70 fs/dcache.c:1752 Code: 41 54 49 89 fc 48 83 ec 08 e8 39 d9 b7 ff 4c 89 ee 4c 89 e7 e8 1e f1 ff ff 48 ba 00 00 00 00 00 fc ff df 48 89 c1 48 c1 e9 03 <0f> b6 14 11 84 d2 74 05 80 fa 03 7e 10 81 08 00 00 00 40 48 83 c4 RSP: 0018:ffff88805814fd00 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 1ffff1100b029fa8 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffffffff81b8a01f RDI: 0000000000000282 RBP: ffff88805814fd18 R08: ffff8880580725c0 R09: ffffed1015d05bc8 R10: ffffed1015d05bc7 R11: ffff8880ae82de3b R12: ffff8880aa38c740 R13: ffff88805814fd60 R14: ffff8880aa1d7a28 R15: ffff88808da23140 FS: 00007fa575bd7700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004ce590 CR3: 00000000901e1000 CR4: 00000000001406f0