syzkaller login: [ 28.746501] BUG: Bad rss-counter state mm:0000000052bcd951 type:MM_FILEPAGES val:33 [ 28.747677] BUG: Bad rss-counter state mm:0000000052bcd951 type:MM_ANONPAGES val:22 [ 28.919590] ================================================================== [ 28.920510] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.921422] Read of size 8 at addr ffff88800d4ebed8 by task sshd/220 [ 28.922213] [ 28.922446] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 28.923255] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.924164] Call Trace: [ 28.924487] [ 28.924755] dump_stack_lvl+0x91/0xf0 [ 28.925238] print_report+0xcc/0x620 [ 28.925695] ? __virt_addr_valid+0x102/0x340 [ 28.926216] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.926795] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.927372] kasan_report+0xbe/0xf0 [ 28.927827] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.928408] vma_interval_tree_remove+0xc75/0xec0 [ 28.928973] vma_prepare+0xc54/0x11a0 [ 28.929433] __split_vma+0x5af/0x950 [ 28.929874] ? __pfx___split_vma+0x10/0x10 [ 28.930373] ? find_held_lock+0x2c/0x110 [ 28.930867] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.931402] ? lock_is_held_type+0x9f/0x120 [ 28.931935] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.932509] ? mtree_range_walk+0x632/0x900 [ 28.933030] ? mas_walk+0x5c7/0x7c0 [ 28.933498] do_vmi_munmap+0x1f1/0x2b0 [ 28.933964] mmap_region+0x1f9/0x2660 [ 28.934416] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.934920] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.935603] ? __pfx_lock_acquire+0x10/0x10 [ 28.936130] ? __pfx_mmap_region+0x10/0x10 [ 28.936728] ? security_mmap_addr+0x7d/0xa0 [ 28.937376] ? get_unmapped_area+0x1f5/0x3f0 [ 28.938044] do_mmap+0x854/0xf00 [ 28.938568] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.939165] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.939844] ksys_mmap_pgoff+0x3af/0x500 [ 28.940458] do_syscall_64+0x3f/0x90 [ 28.941037] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.941855] RIP: 0033:0x7ff5e8d6dd82 [ 28.942414] Code: eb aa 66 0f 1f 44 00 00 41 f7 c1 ff 0f 00 00 75 27 55 48 89 fd 53 89 cb 48 85 ff 74 33 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 56 5b 5d c3 0f 1f 00 c7 05 ae 03 01 00 16 00 [ 28.945012] RSP: 002b:00007ffe3e9aec48 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.946133] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007ff5e8d6dd82 [ 28.947152] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007ff5e81a7000 [ 28.948185] RBP: 00007ff5e81a7000 R08: 0000000000000009 R09: 0000000000001000 [ 28.949238] R10: 0000000000000812 R11: 0000000000000206 R12: 00005577854deec0 [ 28.950262] R13: 00007ffe3e9aec60 R14: 00007ffe3e9aec90 R15: 00007ffe3e9aeff0 [ 28.951307] [ 28.951653] [ 28.951903] Allocated by task 212: [ 28.952421] kasan_save_stack+0x22/0x50 [ 28.953012] kasan_set_track+0x25/0x30 [ 28.953626] __kasan_slab_alloc+0x59/0x70 [ 28.954251] kmem_cache_alloc+0x16b/0x370 [ 28.954880] vm_area_dup+0x20/0x160 [ 28.955421] __split_vma+0x170/0x950 [ 28.955984] split_vma+0xc6/0x110 [ 28.956508] mprotect_fixup+0x8d2/0xb30 [ 28.957115] do_mprotect_pkey+0x87e/0xd40 [ 28.957754] __x64_sys_mprotect+0x78/0xc0 [ 28.958382] do_syscall_64+0x3f/0x90 [ 28.958966] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.959745] [ 28.959998] Freed by task 212: [ 28.960383] kasan_save_stack+0x22/0x50 [ 28.960879] kasan_set_track+0x25/0x30 [ 28.961388] kasan_save_free_info+0x2b/0x50 [ 28.961915] __kasan_slab_free+0x10a/0x190 [ 28.962438] kmem_cache_free+0x10d/0x4d0 [ 28.962927] rcu_core+0x8c8/0x2860 [ 28.963360] __do_softirq+0x1b7/0x7d4 [ 28.963830] [ 28.964045] Last potentially related work creation: [ 28.964623] kasan_save_stack+0x22/0x50 [ 28.965139] __kasan_record_aux_stack+0x8e/0xa0 [ 28.965708] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.966354] remove_vma+0x139/0x170 [ 28.966793] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.967356] do_vmi_munmap+0x1f1/0x2b0 [ 28.967828] __vm_munmap+0x138/0x3a0 [ 28.968298] __x64_sys_munmap+0x59/0x80 [ 28.968769] do_syscall_64+0x3f/0x90 [ 28.969238] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.969884] [ 28.970092] Second to last potentially related work creation: [ 28.970743] kasan_save_stack+0x22/0x50 [ 28.971234] __kasan_record_aux_stack+0x8e/0xa0 [ 28.971796] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.972431] remove_vma+0x139/0x170 [ 28.972872] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.973447] do_vmi_munmap+0x1f1/0x2b0 [ 28.973922] mmap_region+0x1f9/0x2660 [ 28.974398] do_mmap+0x854/0xf00 [ 28.974822] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.975309] ksys_mmap_pgoff+0x3af/0x500 [ 28.975816] do_syscall_64+0x3f/0x90 [ 28.976287] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.976910] [ 28.977125] The buggy address belongs to the object at ffff88800d4ebe80 [ 28.977125] which belongs to the cache vm_area_struct of size 168 [ 28.978561] The buggy address is located 88 bytes inside of [ 28.978561] freed 168-byte region [ffff88800d4ebe80, ffff88800d4ebf28) [ 28.979968] [ 28.980190] The buggy address belongs to the physical page: [ 28.980846] page:000000001640b32e refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd4eb [ 28.981898] memcg:ffff88800ed29201 [ 28.982318] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 28.983002] page_type: 0xffffffff() [ 28.983456] raw: 0100000000000200 ffff8880087a0c80 ffffea0000650c40 dead000000000003 [ 28.984362] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ed29201 [ 28.985267] page dumped because: kasan: bad access detected [ 28.985932] [ 28.986145] Memory state around the buggy address: [ 28.986716] ffff88800d4ebd80: fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 28.987576] ffff88800d4ebe00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 28.988424] >ffff88800d4ebe80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.989270] ^ [ 28.989971] ffff88800d4ebf00: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc [ 28.990802] ffff88800d4ebf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.991609] ================================================================== [ 28.992628] Disabling lock debugging due to kernel taint [ 31.687407] BUG: Bad rss-counter state mm:0000000006a9acb7 type:MM_FILEPAGES val:33 [ 31.688657] BUG: Bad rss-counter state mm:0000000006a9acb7 type:MM_ANONPAGES val:22 [ 32.122631] BUG: Bad rss-counter state mm:0000000049edcf6f type:MM_FILEPAGES val:33 [ 32.123614] BUG: Bad rss-counter state mm:0000000049edcf6f type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:51424' (ECDSA) to the list of known hosts. 2023/06/20 20:24:42 fuzzer started 2023/06/20 20:24:42 dialing manager at localhost:36067 2023/06/20 20:24:42 checking machine... 2023/06/20 20:24:42 checking revisions... [ 32.847602] kmemleak: Automatic memory scanning thread ended 2023/06/20 20:24:42 testing simple program... [ 32.902202] cgroup: Unknown subsys name 'net' [ 32.941398] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 20:24:41 Registers: info registers vcpu 0 RAX=1ffff11001180807 RBX=0000000000000000 RCX=0000000000000000 RDX=0000000000000000 RSI=0000000000000008 RDI=ffff88806ce39f78 RBP=0000000000000008 RSP=ffff888008d9fb78 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=1ffff1100d9c7479 R12=ffff888008c0403c R13=ffff888008c04000 R14=0000000000000000 R15=dffffc0000000000 RIP=ffffffff81264235 RFL=00000013 [----A-C] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 0000000000000000 00000000 00000000 GS =0000 ffff88806ce00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007ffc6104be38 CR3=000000001956e000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=2031343a34323a3032203032206e754a XMM01=6964206465766965636552203a5d3932 XMM02=6f63736964203a31313a363331373520 XMM03=7266207463656e6e6f63736964206465 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732031343a34323a3032203032 XMM08=69767265733d7373616c63742030733a XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=ffff88800f44f750 RCX=0000000000000000 RDX=1ffff11001e89ef1 RSI=ffffffff8189addd RDI=ffff88800f44f750 RBP=ffff88800f44f600 RSP=ffff88800f44f5c8 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=00676f6c7379732f R12=0000000000000041 R13=0000000000000000 R14=ffff88800f44f788 R15=0000000000000000 RIP=ffffffff8189ae02 RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f3fe3172900 00000000 00000000 GS =0000 ffff88806cf00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000048000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007f7308980650 CR3=00000000103c8000 CR4=00350ee0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=756f6a2f646d65747379732f6e75722f XMM01=00676f6c7379732f6c616e72756f6a2f XMM02=756f6a2f646d65747379732f6e75722f XMM03=006c616e72756f6a2f646d6574737973 XMM04=da09e65751471ac300000000000ae988 XMM05=e1377f5a7b06c4490000000000134018 XMM06=4fda316b135da52b0000000000132e08 XMM07=fb795ef6d65770560000000000121650 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000