[ 32.693743] BUG: Bad rss-counter state mm:00000000c3287dfb type:MM_FILEPAGES val:33 [ 32.694974] BUG: Bad rss-counter state mm:00000000c3287dfb type:MM_ANONPAGES val:22 [ 32.853511] ================================================================== [ 32.854408] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 32.855339] Read of size 8 at addr ffff88801a432140 by task sshd/219 [ 32.856119] [ 32.856340] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 32.857306] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 32.858269] Call Trace: [ 32.858584] [ 32.858979] dump_stack_lvl+0x91/0xf0 [ 32.859588] print_report+0xcc/0x620 [ 32.860157] ? __virt_addr_valid+0x102/0x340 [ 32.860800] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.861512] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.862229] kasan_report+0xbe/0xf0 [ 32.862790] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.863563] vma_interval_tree_remove+0xc75/0xec0 [ 32.864294] vma_prepare+0xc54/0x11a0 [ 32.864878] __split_vma+0x5af/0x950 [ 32.865455] ? __pfx___split_vma+0x10/0x10 [ 32.866091] ? find_held_lock+0x2c/0x110 [ 32.866713] do_vmi_align_munmap+0x2ba/0x11f0 [ 32.867399] ? lock_is_held_type+0x9f/0x120 [ 32.868084] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 32.868830] ? mtree_range_walk+0x632/0x900 [ 32.869504] ? mas_walk+0x5c7/0x7c0 [ 32.870076] do_vmi_munmap+0x1f1/0x2b0 [ 32.870680] mmap_region+0x1f9/0x2660 [ 32.871273] ? vm_mmap_pgoff+0x15c/0x3a0 [ 32.871894] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 32.872594] ? __pfx_lock_acquire+0x10/0x10 [ 32.873117] ? __pfx_mmap_region+0x10/0x10 [ 32.873641] ? security_mmap_addr+0x7d/0xa0 [ 32.874169] ? get_unmapped_area+0x1f5/0x3f0 [ 32.874716] do_mmap+0x854/0xf00 [ 32.875148] vm_mmap_pgoff+0x1a6/0x3a0 [ 32.875651] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 32.876206] ksys_mmap_pgoff+0x3af/0x500 [ 32.876706] do_syscall_64+0x3f/0x90 [ 32.877176] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.877815] RIP: 0033:0x7f322a87ed82 [ 32.878265] 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 [ 32.880362] RSP: 002b:00007ffcc0c34328 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 32.881255] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f322a87ed82 [ 32.882090] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f3229cb8000 [ 32.882921] RBP: 00007f3229cb8000 R08: 0000000000000009 R09: 0000000000001000 [ 32.883778] R10: 0000000000000812 R11: 0000000000000206 R12: 00005585e4ef1b20 [ 32.884612] R13: 00007ffcc0c34340 R14: 00007ffcc0c34370 R15: 00007ffcc0c346d0 [ 32.885456] [ 32.885749] [ 32.885963] Allocated by task 212: [ 32.886386] kasan_save_stack+0x22/0x50 [ 32.886888] kasan_set_track+0x25/0x30 [ 32.887378] __kasan_slab_alloc+0x59/0x70 [ 32.887908] kmem_cache_alloc+0x16b/0x370 [ 32.888427] vm_area_dup+0x20/0x160 [ 32.888879] __split_vma+0x170/0x950 [ 32.889335] split_vma+0xc6/0x110 [ 32.889774] mprotect_fixup+0x8d2/0xb30 [ 32.890279] do_mprotect_pkey+0x87e/0xd40 [ 32.890802] __x64_sys_mprotect+0x78/0xc0 [ 32.891314] do_syscall_64+0x3f/0x90 [ 32.891809] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.892452] [ 32.892663] Freed by task 212: [ 32.893059] kasan_save_stack+0x22/0x50 [ 32.893566] kasan_set_track+0x25/0x30 [ 32.894061] kasan_save_free_info+0x2b/0x50 [ 32.894589] __kasan_slab_free+0x10a/0x190 [ 32.895122] kmem_cache_free+0x10d/0x4d0 [ 32.895637] rcu_core+0x8c8/0x2860 [ 32.896080] __do_softirq+0x1b7/0x7d4 [ 32.896555] [ 32.896772] Last potentially related work creation: [ 32.897359] kasan_save_stack+0x22/0x50 [ 32.897857] __kasan_record_aux_stack+0x8e/0xa0 [ 32.898434] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.899074] remove_vma+0x139/0x170 [ 32.899540] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.900099] do_vmi_munmap+0x1f1/0x2b0 [ 32.900585] __vm_munmap+0x138/0x3a0 [ 32.901054] __x64_sys_munmap+0x59/0x80 [ 32.901552] do_syscall_64+0x3f/0x90 [ 32.902027] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.902671] [ 32.902884] Second to last potentially related work creation: [ 32.903584] kasan_save_stack+0x22/0x50 [ 32.904091] __kasan_record_aux_stack+0x8e/0xa0 [ 32.904655] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.905299] remove_vma+0x139/0x170 [ 32.905753] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.906319] do_vmi_munmap+0x1f1/0x2b0 [ 32.906805] mmap_region+0x1f9/0x2660 [ 32.907284] do_mmap+0x854/0xf00 [ 32.907716] vm_mmap_pgoff+0x1a6/0x3a0 [ 32.908206] ksys_mmap_pgoff+0x3af/0x500 [ 32.908710] do_syscall_64+0x3f/0x90 [ 32.909184] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.909826] [ 32.910043] The buggy address belongs to the object at ffff88801a4320e8 [ 32.910043] which belongs to the cache vm_area_struct of size 168 [ 32.911536] The buggy address is located 88 bytes inside of [ 32.911536] freed 168-byte region [ffff88801a4320e8, ffff88801a432190) [ 32.912939] [ 32.913159] The buggy address belongs to the physical page: [ 32.913817] page:00000000a521fb7a refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88801a432658 pfn:0x1a432 [ 32.915050] memcg:ffff8880197ec201 [ 32.915488] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 32.916193] page_type: 0xffffffff() [ 32.916640] raw: 0100000000000200 ffff88800879fc80 ffffea0000690ec0 dead00000000000b [ 32.917569] raw: ffff88801a432658 0000000080110007 00000001ffffffff ffff8880197ec201 [ 32.918478] page dumped because: kasan: bad access detected [ 32.919148] [ 32.919366] Memory state around the buggy address: [ 32.919964] ffff88801a432000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.920827] ffff88801a432080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 32.921663] >ffff88801a432100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.922521] ^ [ 32.923167] ffff88801a432180: fb fb fc fc fc fc fc fc fc fc fb fb fb fb fb fb [ 32.924051] ffff88801a432200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 32.924914] ================================================================== [ 32.925894] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 34.860783] BUG: Bad rss-counter state mm:0000000032e00ae6 type:MM_FILEPAGES val:33 [ 34.861935] BUG: Bad rss-counter state mm:0000000032e00ae6 type:MM_ANONPAGES val:22 [ 35.341681] BUG: Bad rss-counter state mm:0000000090e62ca7 type:MM_FILEPAGES val:33 [ 35.342917] BUG: Bad rss-counter state mm:0000000090e62ca7 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:5728' (ECDSA) to the list of known hosts. 2023/06/20 00:19:22 fuzzer started 2023/06/20 00:19:22 dialing manager at localhost:44161 2023/06/20 00:19:22 checking machine... 2023/06/20 00:19:22 checking revisions... [ 35.978388] kmemleak: Automatic memory scanning thread ended 2023/06/20 00:19:22 testing simple program... [ 36.039052] cgroup: Unknown subsys name 'net' [ 36.092877] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 00:19:20 Registers: info registers vcpu 0 RAX=ffffffff863b1c9b RBX=0000000000000001 RCX=ffffffff863b1c96 RDX=0000000000000000 RSI=0000000000000000 RDI=0000000000000001 RBP=ffff888019047a88 RSP=ffff8880190479c0 R8 =ffffffff863b1c9a R9 =ffff888019047a70 R10=0000000000038001 R11=000000000008a977 R12=ffff888019047a90 R13=ffff888019047a78 R14=ffff888019047a71 R15=ffff888019047a30 RIP=ffffffff81130abf 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 00007f5235194900 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=00007ffd2a799000 CR3=000000000ec68000 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=ffffffffffffffffffff000000000000 XMM01=000000000000003635006b6f6c6c756e XMM02=62003d73646e756f7200323135616873 XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=00000000000000000000000000202020 XMM09=ff0000ffffffffffff00000000ffffff XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 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 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=00007f5beedb8110 CR3=0000000019224000 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=2031323a39313a3030203032206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732031323a39313a3030203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000