syzkaller login: [ 30.741857] BUG: Bad rss-counter state mm:00000000a5b28b55 type:MM_FILEPAGES val:33 [ 30.742515] BUG: Bad rss-counter state mm:00000000a5b28b55 type:MM_ANONPAGES val:22 [ 30.910665] ================================================================== [ 30.911768] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.912920] Read of size 8 at addr ffff8880169b95c8 by task sshd/219 [ 30.913948] [ 30.914213] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.915275] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.916495] Call Trace: [ 30.916901] [ 30.917246] dump_stack_lvl+0x91/0xf0 [ 30.917835] print_report+0xcc/0x620 [ 30.918429] ? __virt_addr_valid+0x102/0x340 [ 30.919102] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.919854] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.920604] kasan_report+0xbe/0xf0 [ 30.921189] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.921944] vma_interval_tree_remove+0xc75/0xec0 [ 30.922674] vma_prepare+0xc54/0x11a0 [ 30.923256] __split_vma+0x5af/0x950 [ 30.923828] ? __pfx___split_vma+0x10/0x10 [ 30.924476] ? find_held_lock+0x2c/0x110 [ 30.925132] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.925813] ? lock_is_held_type+0x9f/0x120 [ 30.926471] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.927210] ? mtree_range_walk+0x632/0x900 [ 30.927878] ? mas_walk+0x5c7/0x7c0 [ 30.928448] do_vmi_munmap+0x1f1/0x2b0 [ 30.929048] mmap_region+0x1f9/0x2660 [ 30.929632] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.930254] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.931125] ? __pfx_lock_acquire+0x10/0x10 [ 30.931773] ? __pfx_mmap_region+0x10/0x10 [ 30.932416] ? security_mmap_addr+0x7d/0xa0 [ 30.933070] ? get_unmapped_area+0x1f5/0x3f0 [ 30.933685] do_mmap+0x854/0xf00 [ 30.934122] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.934591] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.935130] ksys_mmap_pgoff+0x3af/0x500 [ 30.935611] do_syscall_64+0x3f/0x90 [ 30.936072] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.936709] RIP: 0033:0x7f1887330d82 [ 30.937141] 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 [ 30.939134] RSP: 002b:00007ffcc8e09a98 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.939986] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f1887330d82 [ 30.940790] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f188676a000 [ 30.941584] RBP: 00007f188676a000 R08: 0000000000000009 R09: 0000000000001000 [ 30.942385] R10: 0000000000000812 R11: 0000000000000206 R12: 0000562771b35f70 [ 30.943306] R13: 00007ffcc8e09ab0 R14: 00007ffcc8e09ae0 R15: 00007ffcc8e09e40 [ 30.944311] [ 30.944661] [ 30.944916] Allocated by task 212: [ 30.945418] kasan_save_stack+0x22/0x50 [ 30.946008] kasan_set_track+0x25/0x30 [ 30.946585] __kasan_slab_alloc+0x59/0x70 [ 30.947199] kmem_cache_alloc+0x16b/0x370 [ 30.947801] vm_area_dup+0x20/0x160 [ 30.948335] __split_vma+0x170/0x950 [ 30.948897] split_vma+0xc6/0x110 [ 30.949409] mprotect_fixup+0x8d2/0xb30 [ 30.949993] do_mprotect_pkey+0x87e/0xd40 [ 30.950600] __x64_sys_mprotect+0x78/0xc0 [ 30.951208] do_syscall_64+0x3f/0x90 [ 30.951762] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.952514] [ 30.952771] Freed by task 212: [ 30.953227] kasan_save_stack+0x22/0x50 [ 30.953815] kasan_set_track+0x25/0x30 [ 30.954391] kasan_save_free_info+0x2b/0x50 [ 30.955017] __kasan_slab_free+0x10a/0x190 [ 30.955637] kmem_cache_free+0x10d/0x4d0 [ 30.956234] rcu_core+0x8c8/0x2860 [ 30.956763] __do_softirq+0x1b7/0x7d4 [ 30.957314] [ 30.957564] Last potentially related work creation: [ 30.958247] kasan_save_stack+0x22/0x50 [ 30.958831] __kasan_record_aux_stack+0x8e/0xa0 [ 30.959497] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.960247] remove_vma+0x139/0x170 [ 30.960791] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.961441] do_vmi_munmap+0x1f1/0x2b0 [ 30.962010] __vm_munmap+0x138/0x3a0 [ 30.962556] __x64_sys_munmap+0x59/0x80 [ 30.963139] do_syscall_64+0x3f/0x90 [ 30.963691] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.964446] [ 30.964704] The buggy address belongs to the object at ffff8880169b9570 [ 30.964704] which belongs to the cache vm_area_struct of size 168 [ 30.966429] The buggy address is located 88 bytes inside of [ 30.966429] freed 168-byte region [ffff8880169b9570, ffff8880169b9618) [ 30.968075] [ 30.968328] The buggy address belongs to the physical page: [ 30.969106] page:00000000aefbebb2 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x169b9 [ 30.970387] memcg:ffff888016ae6601 [ 30.970883] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.971641] page_type: 0xffffffff() [ 30.972168] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.973270] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888016ae6601 [ 30.974336] page dumped because: kasan: bad access detected [ 30.975112] [ 30.975362] Memory state around the buggy address: [ 30.976049] ffff8880169b9480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.977055] ffff8880169b9500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 30.978056] >ffff8880169b9580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.979049] ^ [ 30.979829] ffff8880169b9600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 30.980847] ffff8880169b9680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.981847] ================================================================== [ 30.983044] Disabling lock debugging due to kernel taint [ 32.709812] BUG: Bad rss-counter state mm:0000000000fb89fc type:MM_FILEPAGES val:33 [ 32.710525] BUG: Bad rss-counter state mm:0000000000fb89fc type:MM_ANONPAGES val:22 [ 33.103404] BUG: Bad rss-counter state mm:00000000b9bbdba2 type:MM_FILEPAGES val:33 [ 33.104544] BUG: Bad rss-counter state mm:00000000b9bbdba2 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:2465' (ECDSA) to the list of known hosts. 2023/06/20 12:10:27 fuzzer started 2023/06/20 12:10:27 dialing manager at localhost:36067 2023/06/20 12:10:27 checking machine... 2023/06/20 12:10:27 checking revisions... [ 33.706377] kmemleak: Automatic memory scanning thread ended 2023/06/20 12:10:27 testing simple program... [ 33.748971] cgroup: Unknown subsys name 'net' [ 33.834208] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 12:10:27 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000001 RCX=0000000000000001 RDX=1ffff1100d9c135b RSI=ffffffff8450cc7f RDI=ffff88806ce09a98 RBP=ffff88806ce09af0 RSP=ffff88806ce09a28 R8 =0000000000000001 R9 =ffff88806ce09ad8 R10=0000000000038001 R11=000000000008ab8c R12=ffff88806ce09af8 R13=ffff88806ce09ae0 R14=ffff88806ce09ad9 R15=ffff88806ce09a98 RIP=ffffffff811306da RFL=00000212 [----A--] 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 00007facf110c900 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=00007f1edde32650 CR3=000000000d99a000 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=756f6a2f646d65747379732f6e75722f XMM01=00676f6c7379732f6c616e72756f6a2f XMM02=756f6a2f646d65747379732f6e75722f XMM03=006c616e72756f6a2f646d6574737973 XMM04=11eb142b44f5b20800000000000ae988 XMM05=b7524b02eee5725f0000000000132be0 XMM06=806171799158d96700000000001319d0 XMM07=fb795ef6d65770560000000000121d10 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=ffffffff85ba4e20 RCX=1ffffffff0b749cc RDX=0000000000000001 RSI=1ffffffff0ba7c92 RDI=ffffffff85ba4e20 RBP=0000000000000000 RSP=ffff888010377c80 R8 =ffffffff85ba4e60 R9 =ffff888010377d20 R10=0000000000000003 R11=00000000000b6a61 R12=0000000000000001 R13=0000000000000000 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff812a0bac RFL=00000046 [---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 00007f1edd87d900 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=00007f1edde34618 CR3=000000000debc000 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=00000000000000000000000000000000 XMM01=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000