device syz_tun entered promiscuous mode device syz_tun left promiscuous mode BUG: unable to handle kernel paging request at ffffeafff94f0020 IP: [<ffffffff8150e8f8>] __read_once_size include/linux/compiler.h:218 [inline] IP: [<ffffffff8150e8f8>] compound_head include/linux/page-flags.h:415 [inline] IP: [<ffffffff8150e8f8>] page_count include/linux/mm.h:470 [inline] IP: [<ffffffff8150e8f8>] __split_huge_page_pmd+0x2c8/0x820 mm/huge_memory.c:3029 PGD 0 Oops: 0000 [#1] PREEMPT SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 18803 Comm: syz-executor6 Not tainted 4.4.150-g5541782 #83 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801d9333000 task.stack: ffff8801cfe28000 RIP: 0010:[<ffffffff8150e8f8>] [<ffffffff8150e8f8>] __read_once_size include/linux/compiler.h:218 [inline] RIP: 0010:[<ffffffff8150e8f8>] [<ffffffff8150e8f8>] compound_head include/linux/page-flags.h:415 [inline] RIP: 0010:[<ffffffff8150e8f8>] [<ffffffff8150e8f8>] page_count include/linux/mm.h:470 [inline] RIP: 0010:[<ffffffff8150e8f8>] [<ffffffff8150e8f8>] __split_huge_page_pmd+0x2c8/0x820 mm/huge_memory.c:3029 RSP: 0018:ffff8801cfe2faa8 EFLAGS: 00010246 RAX: 1ffffd5fff29e004 RBX: ffffeafff94f0020 RCX: ffffc90007440000 RDX: 00000000000003e5 RSI: ffffffff8150e8c0 RDI: 00003ffe53c001e0 RBP: ffff8801cfe2fbb0 R08: ffffffff8533b500 R09: 0000000000000000 R10: 0000000000000001 R11: ffff8801d9333000 R12: ffffeafff94f0000 R13: dffffc0000000000 R14: ffff8801d85b8800 R15: ffff8801d85b8800 FS: 00007fa27aefd700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffeafff94f0020 CR3: 00000001da2b3000 CR4: 00000000001606f0 Stack: ffffffff814b30fb ffff8801d9333920 ffffffff853d1f10 fffffbfff0882602 ffff8801d93338d8 ffff8801d9333928 ffff8801d93338e0 ffff8801d8f5bf20 1ffff10039fc5f65 ffff8802585b8000 0000000000000000 0000000020200000 Call Trace: [<ffffffff815104aa>] split_huge_page_pmd_mm+0x7a/0x90 mm/huge_memory.c:3058 [<ffffffff81510691>] split_huge_page_address+0x1d1/0x220 mm/huge_memory.c:3085 [<ffffffff815108c6>] vma_adjust_trans_huge+0x1e6/0x2c0 mm/huge_memory.c:3101 [<ffffffff814ab4b0>] vma_adjust+0xd50/0x13d0 mm/mmap.c:833 [<ffffffff814abf92>] __split_vma.isra.40+0x462/0x750 mm/mmap.c:2581 [<ffffffff814b30fb>] split_vma+0x5b/0x80 mm/mmap.c:2613 [<ffffffff814a680b>] mlock_fixup+0x3cb/0x510 mm/mlock.c:523 [<ffffffff814a6b91>] apply_vma_lock_flags+0x241/0x330 mm/mlock.c:590 [<ffffffff814a6e46>] do_mlock+0x1c6/0x370 mm/mlock.c:632 [<ffffffff814a74ab>] SYSC_mlock2 mm/mlock.c:659 [inline] [<ffffffff814a74ab>] SyS_mlock2+0x4b/0x70 mm/mlock.c:649 [<ffffffff838cb0a5>] entry_SYSCALL_64_fastpath+0x22/0x9e Code: 48 c1 eb 06 48 01 d8 48 8d 58 20 48 89 85 68 ff ff ff 48 89 d8 48 c1 e8 03 42 80 3c 28 00 0f 85 fd 04 00 00 4c 8b a5 68 ff ff ff <4d> 8b 74 24 20 41 f6 c6 01 0f 85 b1 03 00 00 e8 d4 5b e4 ff 49 RIP [<ffffffff8150e8f8>] __read_once_size include/linux/compiler.h:218 [inline] RIP [<ffffffff8150e8f8>] compound_head include/linux/page-flags.h:415 [inline] RIP [<ffffffff8150e8f8>] page_count include/linux/mm.h:470 [inline] RIP [<ffffffff8150e8f8>] __split_huge_page_pmd+0x2c8/0x820 mm/huge_memory.c:3029 RSP <ffff8801cfe2faa8> CR2: ffffeafff94f0020 ---[ end trace 9b2925d2c906fb36 ]---