Warning: Permanently added '10.128.0.183' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 74.964770][ T8483] page:00000000091c6650 refcount:508 mapcount:1 mapping:0000000000000000 index:0x20e00 pfn:0x32a00 [ 74.976747][ T8483] head:00000000091c6650 order:9 compound_mapcount:0 compound_pincount:0 [ 74.986112][ T8483] memcg:ffff888010d0a000 [ 74.991695][ T8483] anon flags: 0xfff0000009001d(locked|uptodate|dirty|lru|head|swapbacked) [ 75.000965][ T8483] raw: 00fff0000009001d ffffea0000bc51c8 ffff888010201800 ffff88802575d801 [ 75.009924][ T8483] raw: 0000000000020e00 0000000000000000 000001fc00000000 ffff888010d0a000 [ 75.019561][ T8483] page dumped because: VM_BUG_ON_PAGE(!unmap_success) [ 75.027565][ T8483] ------------[ cut here ]------------ [ 75.033446][ T8483] kernel BUG at mm/huge_memory.c:2351! [ 75.038921][ T8483] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 75.044972][ T8483] CPU: 0 PID: 8483 Comm: syz-executor525 Not tainted 5.11.0-rc4-next-20210120-syzkaller #0 [ 75.056796][ T8483] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.066851][ T8483] RIP: 0010:split_huge_page_to_list+0x1f02/0x43b0 [ 75.073297][ T8483] Code: ef e8 82 46 ea ff 0f 0b e8 ab 69 b9 ff 4c 8d 73 ff e9 56 ea ff ff e8 9d 69 b9 ff 48 c7 c6 40 69 57 89 48 89 ef e8 5e 46 ea ff <0f> 0b e8 87 69 b9 ff 4c 8d 75 ff e9 28 e9 ff ff e8 79 69 b9 ff 49 [ 75.095340][ T8483] RSP: 0018:ffffc9000168f7a0 EFLAGS: 00010282 [ 75.101920][ T8483] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 75.109879][ T8483] RDX: ffff88801e2d5400 RSI: ffffffff88bcc6c7 RDI: fffff520002d1e8e [ 75.117836][ T8483] RBP: ffffea0000ca8000 R08: 0000000000000033 R09: 0000000000000000 [ 75.126403][ T8483] R10: ffffffff815b136e R11: 0000000000000000 R12: ffff888010d0ae60 [ 75.134359][ T8483] R13: ffffea0000ca8000 R14: 000000000000018c R15: 0000000000000000 [ 75.142326][ T8483] FS: 000000000154e880(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 75.151256][ T8483] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.158084][ T8483] CR2: 00007fcc655666c0 CR3: 0000000012e9a000 CR4: 00000000001506f0 [ 75.166068][ T8483] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.178239][ T8483] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.186618][ T8483] Call Trace: [ 75.189926][ T8483] ? find_held_lock+0x2d/0x110 [ 75.195148][ T8483] ? can_split_huge_page+0x610/0x610 [ 75.201147][ T8483] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 75.206997][ T8483] ? vm_normal_page+0x146/0x2a0 [ 75.212218][ T8483] ? do_raw_spin_lock+0x120/0x2b0 [ 75.217265][ T8483] ? rwlock_bug.part.0+0x90/0x90 [ 75.222191][ T8483] madvise_free_pte_range+0x736/0x1ee0 [ 75.227637][ T8483] ? __lock_acquire+0x16b3/0x54c0 [ 75.232645][ T8483] ? madvise_cold_or_pageout_pte_range+0x2880/0x2880 [ 75.239872][ T8483] __walk_page_range+0xe20/0x1ea0 [ 75.244972][ T8483] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 75.251203][ T8483] ? walk_page_test+0x78/0x180 [ 75.255953][ T8483] walk_page_range+0x20d/0x400 [ 75.260698][ T8483] ? __walk_page_range+0x1ea0/0x1ea0 [ 75.265964][ T8483] ? madvise_free_single_vma+0x333/0x550 [ 75.272294][ T8483] madvise_free_single_vma+0x383/0x550 [ 75.277892][ T8483] ? reset_node_managed_pages+0x80/0x80 [ 75.283650][ T8483] ? userfaultfd_remove+0xf0/0x2e0 [ 75.288781][ T8483] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 75.294505][ T8483] ? vmacache_find+0x62/0x330 [ 75.299207][ T8483] ? find_vma_prev+0x7d/0x260 [ 75.304307][ T8483] do_madvise.part.0+0x4e4/0x1ed0 [ 75.309596][ T8483] ? __do_sys_mremap+0x678/0x1370 [ 75.314857][ T8483] ? madvise_cold+0x210/0x210 [ 75.319533][ T8483] ? populate_vma_page_range+0x310/0x330 [ 75.325183][ T8483] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 75.332020][ T8483] ? security_capable+0x8f/0xc0 [ 75.337844][ T8483] __x64_sys_madvise+0x113/0x150 [ 75.342791][ T8483] ? lockdep_hardirqs_on+0x79/0x100 [ 75.348144][ T8483] do_syscall_64+0x2d/0x70 [ 75.352561][ T8483] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 75.359057][ T8483] RIP: 0033:0x440219 [ 75.362939][ T8483] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 75.382966][ T8483] RSP: 002b:00007ffc51b58b98 EFLAGS: 00000246 ORIG_RAX: 000000000000001c [ 75.391383][ T8483] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440219 [ 75.399338][ T8483] RDX: 0000000000000008 RSI: 0000000000c00000 RDI: 0000000020400000 [ 75.407291][ T8483] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 75.415258][ T8483] R10: 0000000020ffc000 R11: 0000000000000246 R12: 0000000000401a20 [ 75.423215][ T8483] R13: 0000000000401ab0 R14: 0000000000000000 R15: 0000000000000000 [ 75.431193][ T8483] Modules linked in: [ 75.435595][ T8483] ---[ end trace 7812a13de61fd12e ]--- [ 75.441261][ T8483] RIP: 0010:split_huge_page_to_list+0x1f02/0x43b0 [ 75.447789][ T8483] Code: ef e8 82 46 ea ff 0f 0b e8 ab 69 b9 ff 4c 8d 73 ff e9 56 ea ff ff e8 9d 69 b9 ff 48 c7 c6 40 69 57 89 48 89 ef e8 5e 46 ea ff <0f> 0b e8 87 69 b9 ff 4c 8d 75 ff e9 28 e9 ff ff e8 79 69 b9 ff 49 [ 75.467607][ T8483] RSP: 0018:ffffc9000168f7a0 EFLAGS: 00010282 [ 75.474797][ T8483] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 75.482815][ T8483] RDX: ffff88801e2d5400 RSI: ffffffff88bcc6c7 RDI: fffff520002d1e8e [ 75.490828][ T8483] RBP: ffffea0000ca8000 R08: 0000000000000033 R09: 0000000000000000 [ 75.498861][ T8483] R10: ffffffff815b136e R11: 0000000000000000 R12: ffff888010d0ae60 [ 75.506888][ T8483] R13: ffffea0000ca8000 R14: 000000000000018c R15: 0000000000000000 [ 75.514916][ T8483] FS: 000000000154e880(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 75.524075][ T8483] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.530662][ T8483] CR2: 00007fcc655666c0 CR3: 0000000012e9a000 CR4: 00000000001506f0 [ 75.539521][ T8483] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.547796][ T8483] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.556046][ T8483] Kernel panic - not syncing: Fatal exception [ 75.563481][ T8483] Kernel Offset: disabled [ 75.567967][ T8483] Rebooting in 86400 seconds..