syzkaller login: [ 36.686692] BUG: Bad rss-counter state mm:000000007a708427 type:MM_FILEPAGES val:33 [ 36.688003] BUG: Bad rss-counter state mm:000000007a708427 type:MM_ANONPAGES val:22 [ 36.848024] ================================================================== [ 36.849058] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 36.850264] Read of size 8 at addr ffff88800f031798 by task sshd/220 [ 36.851151] [ 36.851401] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 36.852389] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 36.853535] Call Trace: [ 36.853904] [ 36.854233] dump_stack_lvl+0x91/0xf0 [ 36.854795] print_report+0xcc/0x620 [ 36.855362] ? __virt_addr_valid+0x102/0x340 [ 36.856001] ? vma_interval_tree_remove+0xc75/0xec0 [ 36.856716] ? vma_interval_tree_remove+0xc75/0xec0 [ 36.857449] kasan_report+0xbe/0xf0 [ 36.858021] ? vma_interval_tree_remove+0xc75/0xec0 [ 36.858769] vma_interval_tree_remove+0xc75/0xec0 [ 36.859482] vma_prepare+0xc54/0x11a0 [ 36.860055] __split_vma+0x5af/0x950 [ 36.860618] ? __pfx___split_vma+0x10/0x10 [ 36.861246] ? find_held_lock+0x2c/0x110 [ 36.861885] do_vmi_align_munmap+0x2ba/0x11f0 [ 36.862560] ? lock_is_held_type+0x9f/0x120 [ 36.863204] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 36.863923] ? mtree_range_walk+0x632/0x900 [ 36.864591] ? mas_walk+0x5c7/0x7c0 [ 36.865155] do_vmi_munmap+0x1f1/0x2b0 [ 36.865764] mmap_region+0x1f9/0x2660 [ 36.866340] ? vm_mmap_pgoff+0x15c/0x3a0 [ 36.866950] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 36.867798] ? __pfx_lock_acquire+0x10/0x10 [ 36.868434] ? __pfx_mmap_region+0x10/0x10 [ 36.869065] ? security_mmap_addr+0x7d/0xa0 [ 36.869716] ? get_unmapped_area+0x1f5/0x3f0 [ 36.870377] do_mmap+0x854/0xf00 [ 36.870900] vm_mmap_pgoff+0x1a6/0x3a0 [ 36.871495] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 36.872198] ksys_mmap_pgoff+0x3af/0x500 [ 36.872803] do_syscall_64+0x3f/0x90 [ 36.873387] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 36.874162] RIP: 0033:0x7fa68360ad82 [ 36.874710] 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 [ 36.877259] RSP: 002b:00007ffd5fa7a7f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 36.878386] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fa68360ad82 [ 36.879400] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fa682a44000 [ 36.880408] RBP: 00007fa682a44000 R08: 0000000000000009 R09: 0000000000001000 [ 36.881433] R10: 0000000000000812 R11: 0000000000000206 R12: 000055b0505c8ec0 [ 36.882445] R13: 00007ffd5fa7a810 R14: 00007ffd5fa7a840 R15: 00007ffd5fa7aba0 [ 36.883470] [ 36.883815] [ 36.884071] Allocated by task 213: [ 36.884589] kasan_save_stack+0x22/0x50 [ 36.885187] kasan_set_track+0x25/0x30 [ 36.885788] __kasan_slab_alloc+0x59/0x70 [ 36.886408] kmem_cache_alloc+0x16b/0x370 [ 36.887027] vm_area_dup+0x20/0x160 [ 36.887571] __split_vma+0x170/0x950 [ 36.888127] split_vma+0xc6/0x110 [ 36.888643] mprotect_fixup+0x8d2/0xb30 [ 36.889235] do_mprotect_pkey+0x87e/0xd40 [ 36.889879] __x64_sys_mprotect+0x78/0xc0 [ 36.890494] do_syscall_64+0x3f/0x90 [ 36.891055] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 36.891859] [ 36.892114] Freed by task 213: [ 36.892573] kasan_save_stack+0x22/0x50 [ 36.893164] kasan_set_track+0x25/0x30 [ 36.893756] kasan_save_free_info+0x2b/0x50 [ 36.894389] __kasan_slab_free+0x10a/0x190 [ 36.895020] kmem_cache_free+0x10d/0x4d0 [ 36.895622] rcu_core+0x8c8/0x2860 [ 36.896150] __do_softirq+0x1b7/0x7d4 [ 36.896708] [ 36.896960] Last potentially related work creation: [ 36.897668] kasan_save_stack+0x22/0x50 [ 36.898269] __kasan_record_aux_stack+0x8e/0xa0 [ 36.898949] __call_rcu_common.constprop.0+0x6a/0xb90 [ 36.899702] remove_vma+0x139/0x170 [ 36.900241] do_vmi_align_munmap+0xd4a/0x11f0 [ 36.900906] do_vmi_munmap+0x1f1/0x2b0 [ 36.901502] __vm_munmap+0x138/0x3a0 [ 36.902052] __x64_sys_munmap+0x59/0x80 [ 36.902643] do_syscall_64+0x3f/0x90 [ 36.903207] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 36.903961] [ 36.904213] Second to last potentially related work creation: [ 36.905025] kasan_save_stack+0x22/0x50 [ 36.905625] __kasan_record_aux_stack+0x8e/0xa0 [ 36.906305] __call_rcu_common.constprop.0+0x6a/0xb90 [ 36.907058] remove_vma+0x139/0x170 [ 36.907597] do_vmi_align_munmap+0xd4a/0x11f0 [ 36.908251] do_vmi_munmap+0x1f1/0x2b0 [ 36.908828] mmap_region+0x1f9/0x2660 [ 36.909410] do_mmap+0x854/0xf00 [ 36.909916] vm_mmap_pgoff+0x1a6/0x3a0 [ 36.910495] ksys_mmap_pgoff+0x3af/0x500 [ 36.911087] do_syscall_64+0x3f/0x90 [ 36.911642] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 36.912395] [ 36.912650] The buggy address belongs to the object at ffff88800f031740 [ 36.912650] which belongs to the cache vm_area_struct of size 168 [ 36.914409] The buggy address is located 88 bytes inside of [ 36.914409] freed 168-byte region [ffff88800f031740, ffff88800f0317e8) [ 36.916072] [ 36.916329] The buggy address belongs to the physical page: [ 36.917104] page:0000000030f63366 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf031 [ 36.918404] memcg:ffff88800c991f01 [ 36.918908] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 36.919732] page_type: 0xffffffff() [ 36.920259] raw: 0100000000000200 ffff88800879fc80 ffffea000039cd40 dead000000000005 [ 36.921347] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800c991f01 [ 36.922406] page dumped because: kasan: bad access detected [ 36.923178] [ 36.923429] Memory state around the buggy address: [ 36.924100] ffff88800f031680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 36.925108] ffff88800f031700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 36.926117] >ffff88800f031780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 36.927106] ^ [ 36.927681] ffff88800f031800: fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 [ 36.928688] ffff88800f031880: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 36.929704] ================================================================== [ 36.930795] Disabling lock debugging due to kernel taint [ 39.097109] BUG: Bad rss-counter state mm:00000000049ab20c type:MM_FILEPAGES val:33 [ 39.098102] BUG: Bad rss-counter state mm:00000000049ab20c type:MM_ANONPAGES val:22 [ 39.573331] BUG: Bad rss-counter state mm:00000000bae6be93 type:MM_FILEPAGES val:33 [ 39.574353] BUG: Bad rss-counter state mm:00000000bae6be93 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:13125' (ECDSA) to the list of known hosts. 2023/06/20 05:23:16 fuzzer started 2023/06/20 05:23:17 dialing manager at localhost:44161 2023/06/20 05:23:17 checking machine... 2023/06/20 05:23:17 checking revisions... [ 40.300865] kmemleak: Automatic memory scanning thread ended 2023/06/20 05:23:17 testing simple program... [ 40.346792] cgroup: Unknown subsys name 'net' [ 40.399387] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 05:23:10 Registers: info registers vcpu 0 RAX=000000000000000c RBX=0000000000000000 RCX=ffffea0000268bc0 RDX=0000000000000000 RSI=ffff888009a2f000 RDI=0000000000000130 RBP=ffffffff813782a8 RSP=ffff888008d7fce8 R8 =0000000000000130 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=0000000000000128 R12=ffff888009a2fe40 R13=ffff88800844f780 R14=ffffffff813782a8 R15=ffff888009a2fec0 RIP=ffffffff8180c86a 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 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=00007f3b5ad7e618 CR3=000000000f5ec000 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=33323a3530203032206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3932325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320303137 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=1ffffffff0bb2ef9 RBX=ffffffff85d977cc RCX=ffffffff8118d7d8 RDX=0000000000000000 RSI=ffffffff8609f9ae RDI=ffffffff85d977c0 RBP=ffffffff85d977cc RSP=ffff888008e578c0 R8 =ffffffff8609f9ae R9 =ffff888008e579b8 R10=0000000000038001 R11=00000000000078fb R12=ffffffff85d977d0 R13=ffffffff85d977c0 R14=ffffffff85d977c8 R15=dffffc0000000000 RIP=ffffffff8112fc7f RFL=00000217 [----APC] 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 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=00007fb17ef5f180 CR3=0000000015a34000 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