syzkaller login: [ 32.575484] BUG: Bad rss-counter state mm:00000000299b5d17 type:MM_FILEPAGES val:33 [ 32.576469] BUG: Bad rss-counter state mm:00000000299b5d17 type:MM_ANONPAGES val:22 [ 32.768823] ================================================================== [ 32.770194] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 32.771582] Read of size 8 at addr ffff88800e43ad08 by task sshd/220 [ 32.772722] [ 32.773049] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 32.774340] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 32.775763] Call Trace: [ 32.776236] [ 32.776663] dump_stack_lvl+0x91/0xf0 [ 32.777396] print_report+0xcc/0x620 [ 32.778157] ? __virt_addr_valid+0x102/0x340 [ 32.778983] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.779904] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.780828] kasan_report+0xbe/0xf0 [ 32.781551] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.782498] vma_interval_tree_remove+0xc75/0xec0 [ 32.783398] vma_prepare+0xc54/0x11a0 [ 32.784112] __split_vma+0x5af/0x950 [ 32.784753] ? __pfx___split_vma+0x10/0x10 [ 32.785519] ? find_held_lock+0x2c/0x110 [ 32.786313] do_vmi_align_munmap+0x2ba/0x11f0 [ 32.787153] ? lock_is_held_type+0x9f/0x120 [ 32.787957] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 32.788859] ? mtree_range_walk+0x632/0x900 [ 32.789684] ? mas_walk+0x5c7/0x7c0 [ 32.790418] do_vmi_munmap+0x1f1/0x2b0 [ 32.791148] mmap_region+0x1f9/0x2660 [ 32.791867] ? vm_mmap_pgoff+0x15c/0x3a0 [ 32.792630] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 32.793689] ? __pfx_lock_acquire+0x10/0x10 [ 32.794493] ? __pfx_mmap_region+0x10/0x10 [ 32.795285] ? security_mmap_addr+0x7d/0xa0 [ 32.796079] ? get_unmapped_area+0x1f5/0x3f0 [ 32.796900] do_mmap+0x854/0xf00 [ 32.797555] vm_mmap_pgoff+0x1a6/0x3a0 [ 32.798324] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 32.799162] ksys_mmap_pgoff+0x3af/0x500 [ 32.799916] do_syscall_64+0x3f/0x90 [ 32.800621] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.801576] RIP: 0033:0x7f3da0d2ad82 [ 32.802270] 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 [ 32.805418] RSP: 002b:00007ffcfc7fdb28 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 32.806800] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f3da0d2ad82 [ 32.808056] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f3da0164000 [ 32.809316] RBP: 00007f3da0164000 R08: 0000000000000009 R09: 0000000000001000 [ 32.810473] R10: 0000000000000812 R11: 0000000000000206 R12: 0000556c05f15f70 [ 32.811711] R13: 00007ffcfc7fdb40 R14: 00007ffcfc7fdb70 R15: 00007ffcfc7fded0 [ 32.812973] [ 32.813406] [ 32.813724] Allocated by task 213: [ 32.814372] kasan_save_stack+0x22/0x50 [ 32.815045] kasan_set_track+0x25/0x30 [ 32.815691] __kasan_slab_alloc+0x59/0x70 [ 32.816388] kmem_cache_alloc+0x16b/0x370 [ 32.817060] vm_area_dup+0x20/0x160 [ 32.817660] __split_vma+0x170/0x950 [ 32.818289] split_vma+0xc6/0x110 [ 32.818863] mprotect_fixup+0x8d2/0xb30 [ 32.819537] do_mprotect_pkey+0x87e/0xd40 [ 32.820255] __x64_sys_mprotect+0x78/0xc0 [ 32.820985] do_syscall_64+0x3f/0x90 [ 32.821642] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.822542] [ 32.822843] Freed by task 210: [ 32.823385] kasan_save_stack+0x22/0x50 [ 32.824079] kasan_set_track+0x25/0x30 [ 32.824767] kasan_save_free_info+0x2b/0x50 [ 32.825510] __kasan_slab_free+0x10a/0x190 [ 32.826260] kmem_cache_free+0x10d/0x4d0 [ 32.826953] rcu_core+0x8c8/0x2860 [ 32.827566] __do_softirq+0x1b7/0x7d4 [ 32.828219] [ 32.828522] Last potentially related work creation: [ 32.829326] kasan_save_stack+0x22/0x50 [ 32.830052] __kasan_record_aux_stack+0x8e/0xa0 [ 32.830852] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.831736] remove_vma+0x139/0x170 [ 32.832355] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.833122] do_vmi_munmap+0x1f1/0x2b0 [ 32.833791] __vm_munmap+0x138/0x3a0 [ 32.834453] __x64_sys_munmap+0x59/0x80 [ 32.835142] do_syscall_64+0x3f/0x90 [ 32.835799] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.836670] [ 32.836963] Second to last potentially related work creation: [ 32.837928] kasan_save_stack+0x22/0x50 [ 32.838624] __kasan_record_aux_stack+0x8e/0xa0 [ 32.839414] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.840302] remove_vma+0x139/0x170 [ 32.840918] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.841688] do_vmi_munmap+0x1f1/0x2b0 [ 32.842368] __vm_munmap+0x138/0x3a0 [ 32.843020] elf_map+0x26f/0x310 [ 32.843630] load_elf_binary+0xd82/0x5030 [ 32.844345] bprm_execve+0x803/0x1940 [ 32.844994] do_execveat_common+0x734/0x8e0 [ 32.845725] __x64_sys_execve+0x93/0xc0 [ 32.846420] do_syscall_64+0x3f/0x90 [ 32.847072] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.847954] [ 32.848250] The buggy address belongs to the object at ffff88800e43acb0 [ 32.848250] which belongs to the cache vm_area_struct of size 168 [ 32.850289] The buggy address is located 88 bytes inside of [ 32.850289] freed 168-byte region [ffff88800e43acb0, ffff88800e43ad58) [ 32.852210] [ 32.852508] The buggy address belongs to the physical page: [ 32.853418] page:000000002a336768 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe43a [ 32.854907] memcg:ffff88800cef1d01 [ 32.855442] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 32.856316] page_type: 0xffffffff() [ 32.856876] raw: 0100000000000200 ffff88800879fc80 ffffea000036fdc0 dead000000000005 [ 32.858068] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800cef1d01 [ 32.859195] page dumped because: kasan: bad access detected [ 32.860020] [ 32.860283] Memory state around the buggy address: [ 32.861013] ffff88800e43ac00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 32.862084] ffff88800e43ac80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 32.863150] >ffff88800e43ad00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 32.864224] ^ [ 32.864773] ffff88800e43ad80: fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 32.865837] ffff88800e43ae00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 32.866902] ================================================================== [ 32.868559] Disabling lock debugging due to kernel taint [ 34.774834] BUG: Bad rss-counter state mm:000000000bb545f7 type:MM_FILEPAGES val:33 [ 34.775901] BUG: Bad rss-counter state mm:000000000bb545f7 type:MM_ANONPAGES val:22 [ 35.348199] BUG: Bad rss-counter state mm:000000003332b4e7 type:MM_FILEPAGES val:33 [ 35.349584] BUG: Bad rss-counter state mm:000000003332b4e7 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:15147' (ECDSA) to the list of known hosts. 2023/06/20 06:15:57 fuzzer started 2023/06/20 06:15:57 dialing manager at localhost:44161 2023/06/20 06:15:57 checking machine... 2023/06/20 06:15:57 checking revisions... [ 35.993177] kmemleak: Automatic memory scanning thread ended 2023/06/20 06:15:57 testing simple program... [ 36.043757] cgroup: Unknown subsys name 'net' [ 36.081837] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 06:15:53 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8450c50e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c58000 R12=ffffffff85d3bed0 R13=1ffffffff0a80fc7 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 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=000055c96a0c43c8 CR3=000000000d9b4000 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=35313a3630203032206e754a3e38333c XMM01=6d6f72662064657463656e6e6f637369 XMM02=2e303120746f6f722072657375206d6f XMM03=3a5d3932325b646873732036353a3531 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320343733 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=00000000000361a0 RCX=ffff88806cf361a0 RDX=0000000000000000 RSI=1ffff1100d9e6c3c RDI=ffffffff8183043d RBP=ffff88800da6ce00 RSP=ffff88800d9cf5b0 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=0000000000000001 R12=0000000000000e80 R13=ffffffff87b67200 R14=ffff88806cf361a0 R15=ffff88806cf361e0 RIP=ffffffff81830714 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 00007f2b806a6900 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=00007fef6ba1f650 CR3=00000000103ea000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=94aa1d0ab8f9b2b100000000000ae988 XMM05=700a89da0d79bf840000000000136500 XMM06=4fda316b135da52b00000000001352f0 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000