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: 28140 Comm: syz-executor.5 Not tainted 5.4.0-rc6-next-20191105 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:pmd_trans_huge_lock include/linux/huge_mm.h:219 [inline]
RIP: 0010:pagemap_pmd_range+0x83/0x1e40 fs/proc/task_mmu.c:1373
Code: c1 ea 03 80 3c 02 00 0f 85 ef 1a 00 00 48 8b 43 18 49 8d 7f 40 48 89 fa 48 c1 ea 03 48 89 45 c8 48 b8 00 00 00 00 00 fc ff df <80> 3c 02 00 0f 85 be 1a 00 00 49 8b 5f 40 be 08 00 00 00 4c 8d ab
RSP: 0018:ffff8880578d7a60 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880578d7c10 RCX: ffffc90011614000
RDX: 0000000000000008 RSI: ffffffff81dd1b94 RDI: 0000000000000040
RBP: ffff8880578d7ad8 R08: ffff888062fd6540 R09: ffffed101533a064
R10: ffffed101533a063 R11: ffff8880a99d031b R12: ffff8880a0686010
R13: 0000000000600000 R14: 00000000005fffff R15: 0000000000000000
FS:  00007fcebfe65700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7507959000 CR3: 000000005b61a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 walk_pmd_range mm/pagewalk.c:78 [inline]
 walk_pud_range mm/pagewalk.c:149 [inline]
 walk_p4d_range mm/pagewalk.c:190 [inline]
 walk_pgd_range mm/pagewalk.c:223 [inline]
 __walk_page_range+0x10ff/0x1b40 mm/pagewalk.c:318
 walk_page_range+0x1c5/0x3b0 mm/pagewalk.c:406
 pagemap_read+0x4d1/0x650 fs/proc/task_mmu.c:1596
 __vfs_read+0x8a/0x110 fs/read_write.c:425
 vfs_read+0x1f0/0x440 fs/read_write.c:461
 ksys_read+0x14f/0x290 fs/read_write.c:587
 __do_sys_read fs/read_write.c:597 [inline]
 __se_sys_read fs/read_write.c:595 [inline]
 __x64_sys_read+0x73/0xb0 fs/read_write.c:595
 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a219
Code: ad b6 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 b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fcebfe64c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a219
RDX: 0000000020001b80 RSI: 0000000020000b80 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcebfe656d4
R13: 00000000004c7ba1 R14: 00000000004ddbe8 R15: 00000000ffffffff
Modules linked in:
---[ end trace bcc4d3a45c6f69b2 ]---
RIP: 0010:pmd_trans_huge_lock include/linux/huge_mm.h:219 [inline]
RIP: 0010:pagemap_pmd_range+0x83/0x1e40 fs/proc/task_mmu.c:1373
Code: c1 ea 03 80 3c 02 00 0f 85 ef 1a 00 00 48 8b 43 18 49 8d 7f 40 48 89 fa 48 c1 ea 03 48 89 45 c8 48 b8 00 00 00 00 00 fc ff df <80> 3c 02 00 0f 85 be 1a 00 00 49 8b 5f 40 be 08 00 00 00 4c 8d ab
RSP: 0018:ffff8880578d7a60 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880578d7c10 RCX: ffffc90011614000
RDX: 0000000000000008 RSI: ffffffff81dd1b94 RDI: 0000000000000040
RBP: ffff8880578d7ad8 R08: ffff888062fd6540 R09: ffffed101533a064
R10: ffffed101533a063 R11: ffff8880a99d031b R12: ffff8880a0686010
R13: 0000000000600000 R14: 00000000005fffff R15: 0000000000000000
FS:  00007fcebfe65700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000017c05b0 CR3: 000000005b61a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400