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: 1 PID: 9795 Comm: syz-executor1 Not tainted 4.20.0-rc7-next-20181224 #190 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:transparent_hugepage_enabled+0x8c/0x5e0 mm/huge_memory.c:69 Code: 80 3c 02 00 0f 85 ae 04 00 00 4c 8b a3 a0 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d bc 24 b8 01 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 91 04 00 00 49 8b bc 24 b8 01 00 00 e8 2d 70 e6 kobject: 'loop3' (00000000294f4a21): kobject_uevent_env RSP: 0018:ffff8880a97e71b8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff8880a7afe460 RCX: ffffc90007def000 RDX: 0000000000000037 RSI: ffffffff81c8f3ea RDI: 00000000000001b8 RBP: ffff8880a97e71e0 R08: ffffed101524fcfd R09: ffffed101524fcfc R10: ffffed101524fcfc R11: ffff8880a927e7e7 R12: 0000000000000000 R13: ffff8880a7afe500 R14: 0000000000000544 R15: 0000000000000e6c FS: 00007fc1ecaf1700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 kobject: 'loop3' (00000000294f4a21): fill_kobj_path: path = '/devices/virtual/block/loop3' CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc7c49efb8 CR3: 000000008624a000 CR4: 00000000001406e0 Call Trace: show_smap+0x167/0x580 fs/proc/task_mmu.c:805 seq_read+0xb81/0x1150 fs/seq_file.c:268 do_loop_readv_writev fs/read_write.c:700 [inline] do_iter_read+0x4bc/0x670 fs/read_write.c:924 vfs_readv+0x175/0x1c0 fs/read_write.c:986 kernel_readv fs/splice.c:362 [inline] default_file_splice_read+0x539/0xb20 fs/splice.c:417 do_splice_to+0x12e/0x190 fs/splice.c:880 splice_direct_to_actor+0x31c/0x9d0 fs/splice.c:957 do_splice_direct+0x2d4/0x420 fs/splice.c:1066 do_sendfile+0x62a/0xe50 fs/read_write.c:1439 __do_sys_sendfile64 fs/read_write.c:1500 [inline] __se_sys_sendfile64 fs/read_write.c:1486 [inline] __x64_sys_sendfile64+0x1fd/0x250 fs/read_write.c:1486 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457ec9 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:00007fc1ecaf0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457ec9 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000005 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000088004 R11: 0000000000000246 R12: 00007fc1ecaf16d4 R13: 00000000004c4acc R14: 00000000004d8008 R15: 00000000ffffffff Modules linked in: kobject: 'loop4' (0000000085599d70): kobject_uevent_env kobject: 'loop4' (0000000085599d70): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000000e4c4134): kobject_uevent_env kobject: 'loop0' (000000000e4c4134): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000d03186d1): kobject_uevent_env ---[ end trace a7d2a7c8471cb08c ]--- RIP: 0010:transparent_hugepage_enabled+0x8c/0x5e0 mm/huge_memory.c:69 kobject: 'loop2' (00000000d03186d1): fill_kobj_path: path = '/devices/virtual/block/loop2' Code: 80 3c 02 00 0f 85 ae 04 00 00 4c 8b a3 a0 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d bc 24 b8 01 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 91 04 00 00 49 8b bc 24 b8 01 00 00 e8 2d 70 e6 kobject: 'loop2' (00000000d03186d1): kobject_uevent_env kobject: 'loop2' (00000000d03186d1): fill_kobj_path: path = '/devices/virtual/block/loop2' RSP: 0018:ffff8880a97e71b8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff8880a7afe460 RCX: ffffc90007def000 kobject: 'loop3' (00000000294f4a21): kobject_uevent_env RDX: 0000000000000037 RSI: ffffffff81c8f3ea RDI: 00000000000001b8 RBP: ffff8880a97e71e0 R08: ffffed101524fcfd R09: ffffed101524fcfc R10: ffffed101524fcfc R11: ffff8880a927e7e7 R12: 0000000000000000 kobject: 'loop3' (00000000294f4a21): fill_kobj_path: path = '/devices/virtual/block/loop3' R13: ffff8880a7afe500 R14: 0000000000000544 R15: 0000000000000e6c FS: 00007fc1ecaf1700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 kobject: 'loop5' (000000000b6f442b): kobject_uevent_env kobject: 'loop5' (000000000b6f442b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000294f4a21): kobject_uevent_env CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000070a158 CR3: 000000008624a000 CR4: 00000000001406f0 kobject: 'loop3' (00000000294f4a21): fill_kobj_path: path = '/devices/virtual/block/loop3'