syzkaller login: [ 30.104179] BUG: Bad rss-counter state mm:0000000088f84cf3 type:MM_FILEPAGES val:33 [ 30.105205] BUG: Bad rss-counter state mm:0000000088f84cf3 type:MM_ANONPAGES val:22 [ 30.282885] ================================================================== [ 30.283955] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.285208] Read of size 8 at addr ffff88800ed3ec20 by task sshd/221 [ 30.286101] [ 30.286359] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.287426] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.288574] Call Trace: [ 30.288958] [ 30.289297] dump_stack_lvl+0x91/0xf0 [ 30.289883] print_report+0xcc/0x620 [ 30.290451] ? __virt_addr_valid+0x102/0x340 [ 30.291104] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.291833] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.292577] kasan_report+0xbe/0xf0 [ 30.293165] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.293921] vma_interval_tree_remove+0xc75/0xec0 [ 30.294665] vma_prepare+0xc54/0x11a0 [ 30.295249] __split_vma+0x5af/0x950 [ 30.295828] ? __pfx___split_vma+0x10/0x10 [ 30.296476] ? find_held_lock+0x2c/0x110 [ 30.297141] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.297757] ? lock_is_held_type+0x9f/0x120 [ 30.298299] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.298910] ? mtree_range_walk+0x632/0x900 [ 30.299461] ? mas_walk+0x5c7/0x7c0 [ 30.299945] do_vmi_munmap+0x1f1/0x2b0 [ 30.300438] mmap_region+0x1f9/0x2660 [ 30.300927] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.301446] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.302179] ? __pfx_lock_acquire+0x10/0x10 [ 30.302711] ? __pfx_mmap_region+0x10/0x10 [ 30.303262] ? security_mmap_addr+0x7d/0xa0 [ 30.303800] ? get_unmapped_area+0x1f5/0x3f0 [ 30.304366] do_mmap+0x854/0xf00 [ 30.304844] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.305344] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.305917] ksys_mmap_pgoff+0x3af/0x500 [ 30.306422] do_syscall_64+0x3f/0x90 [ 30.306903] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.307552] RIP: 0033:0x7f851e02fd82 [ 30.308016] 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 [ 30.310147] RSP: 002b:00007ffc357fad78 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.311047] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f851e02fd82 [ 30.311895] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f851d469000 [ 30.312755] RBP: 00007f851d469000 R08: 0000000000000009 R09: 0000000000001000 [ 30.313603] R10: 0000000000000812 R11: 0000000000000206 R12: 000055ceccfa5980 [ 30.314439] R13: 00007ffc357fad90 R14: 00007ffc357fadc0 R15: 00007ffc357fb120 [ 30.315304] [ 30.315595] [ 30.315808] Allocated by task 214: [ 30.316235] kasan_save_stack+0x22/0x50 [ 30.316750] kasan_set_track+0x25/0x30 [ 30.317243] __kasan_slab_alloc+0x59/0x70 [ 30.317768] kmem_cache_alloc+0x16b/0x370 [ 30.318280] vm_area_dup+0x20/0x160 [ 30.318734] __split_vma+0x170/0x950 [ 30.319201] split_vma+0xc6/0x110 [ 30.319648] mprotect_fixup+0x8d2/0xb30 [ 30.320154] do_mprotect_pkey+0x87e/0xd40 [ 30.320690] __x64_sys_mprotect+0x78/0xc0 [ 30.321217] do_syscall_64+0x3f/0x90 [ 30.321696] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.322344] [ 30.322562] Freed by task 214: [ 30.322965] kasan_save_stack+0x22/0x50 [ 30.323468] kasan_set_track+0x25/0x30 [ 30.323958] kasan_save_free_info+0x2b/0x50 [ 30.324482] __kasan_slab_free+0x10a/0x190 [ 30.325033] kmem_cache_free+0x10d/0x4d0 [ 30.325536] rcu_core+0x8c8/0x2860 [ 30.325983] __do_softirq+0x1b7/0x7d4 [ 30.326462] [ 30.326674] Last potentially related work creation: [ 30.327252] kasan_save_stack+0x22/0x50 [ 30.327759] __kasan_record_aux_stack+0x8e/0xa0 [ 30.328333] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.328982] remove_vma+0x139/0x170 [ 30.329429] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.329991] do_vmi_munmap+0x1f1/0x2b0 [ 30.330478] __vm_munmap+0x138/0x3a0 [ 30.330950] __x64_sys_munmap+0x59/0x80 [ 30.331440] do_syscall_64+0x3f/0x90 [ 30.331919] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.332563] [ 30.332784] The buggy address belongs to the object at ffff88800ed3ebc8 [ 30.332784] which belongs to the cache vm_area_struct of size 168 [ 30.334250] The buggy address is located 88 bytes inside of [ 30.334250] freed 168-byte region [ffff88800ed3ebc8, ffff88800ed3ec70) [ 30.335659] [ 30.335880] The buggy address belongs to the physical page: [ 30.336574] page:00000000d6439ef9 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xed3e [ 30.337668] memcg:ffff88801a26af01 [ 30.338107] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.338763] page_type: 0xffffffff() [ 30.339210] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.340126] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a26af01 [ 30.341033] page dumped because: kasan: bad access detected [ 30.341689] [ 30.341908] Memory state around the buggy address: [ 30.342480] ffff88800ed3eb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.343328] ffff88800ed3eb80: 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 30.344181] >ffff88800ed3ec00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 30.345044] ^ [ 30.345570] ffff88800ed3ec80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 30.346438] ffff88800ed3ed00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 30.347290] ================================================================== [ 30.348285] Disabling lock debugging due to kernel taint [ 32.257196] BUG: Bad rss-counter state mm:000000005fac5be5 type:MM_FILEPAGES val:33 [ 32.258364] BUG: Bad rss-counter state mm:000000005fac5be5 type:MM_ANONPAGES val:22 [ 32.707858] BUG: Bad rss-counter state mm:0000000023be09e2 type:MM_FILEPAGES val:33 [ 32.709043] BUG: Bad rss-counter state mm:0000000023be09e2 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:58142' (ECDSA) to the list of known hosts. 2023/06/21 04:45:08 fuzzer started 2023/06/21 04:45:08 dialing manager at localhost:36067 2023/06/21 04:45:08 checking machine... 2023/06/21 04:45:08 checking revisions... [ 33.323358] kmemleak: Automatic memory scanning thread ended 2023/06/21 04:45:08 testing simple program... [ 33.371711] cgroup: Unknown subsys name 'net' [ 33.426161] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 04:45:08 Registers: info registers vcpu 0 RAX=ffffffff85d3d358 RBX=0000000000000000 RCX=ffffffff81260731 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=ffff88800db9fb88 RSP=ffff88800db9f9a8 R8 =0000000000000000 R9 =ffffed1001d5d6d0 R10=ffff88800eaeb687 R11=0000000000000000 R12=0000000000000000 R13=ffff88800eaeb680 R14=0000000000000000 R15=0000000000000009 RIP=ffffffff8180f065 RFL=00000082 [--S----] 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 00007f8801801700 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=00007f3478a6d0b0 CR3=000000000c47e000 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=2038303a35343a3430203132206e754a XMM01=73732878696e755f6d6170203a5d3033 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3033325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732038303a35343a3430203132 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c04400 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f 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=00007f40fb0380b0 CR3=000000000c6f6000 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=e70a553921b967ab134e393f36ca4124 XMM02=ec2efd57dc4c00df000000000011b088 XMM03=a640505ec39842e4000000000011b158 XMM04=45b12d244ef20d2f00000000000ae988 XMM05=2843993294de99470000000000131e28 XMM06=c291bd5c70af25b90000000000131820 XMM07=e042d86d42eb936e0000000000121d50 XMM08=a640505ec39842e4000000000011b158 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000