syzkaller login: [ 194.961728] BUG: Bad rss-counter state mm:00000000289cd1f6 type:MM_FILEPAGES val:33 [ 194.963205] BUG: Bad rss-counter state mm:00000000289cd1f6 type:MM_ANONPAGES val:22 [ 195.153745] ================================================================== [ 195.154752] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 195.155751] Read of size 8 at addr ffff88800f893a50 by task sshd/220 [ 195.156846] [ 195.157153] CPU: 1 PID: 220 Comm: sshd Tainted: G L 6.4.0-rc7-next-20230619 #1 [ 195.158280] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 195.159365] Call Trace: [ 195.159710] [ 195.160011] dump_stack_lvl+0x91/0xf0 [ 195.160569] print_report+0xcc/0x620 [ 195.161083] ? __virt_addr_valid+0x102/0x340 [ 195.161676] ? vma_interval_tree_remove+0xc75/0xec0 [ 195.162340] ? vma_interval_tree_remove+0xc75/0xec0 [ 195.163036] kasan_report+0xbe/0xf0 [ 195.163589] ? vma_interval_tree_remove+0xc75/0xec0 [ 195.164277] vma_interval_tree_remove+0xc75/0xec0 [ 195.164946] vma_prepare+0xc54/0x11a0 [ 195.165493] __split_vma+0x5af/0x950 [ 195.166008] ? __pfx___split_vma+0x10/0x10 [ 195.166618] ? find_held_lock+0x2c/0x110 [ 195.167189] do_vmi_align_munmap+0x2ba/0x11f0 [ 195.167823] ? lock_is_held_type+0x9f/0x120 [ 195.168437] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 195.169103] ? mtree_range_walk+0x632/0x900 [ 195.169722] ? mas_walk+0x5c7/0x7c0 [ 195.170230] do_vmi_munmap+0x1f1/0x2b0 [ 195.170805] mmap_region+0x1f9/0x2660 [ 195.171346] ? vm_mmap_pgoff+0x15c/0x3a0 [ 195.171906] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 195.172707] ? __pfx_lock_acquire+0x10/0x10 [ 195.173304] ? __pfx_mmap_region+0x10/0x10 [ 195.173883] ? security_mmap_addr+0x7d/0xa0 [ 195.174473] ? get_unmapped_area+0x1f5/0x3f0 [ 195.175078] do_mmap+0x854/0xf00 [ 195.175574] vm_mmap_pgoff+0x1a6/0x3a0 [ 195.176112] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 195.176739] ksys_mmap_pgoff+0x3af/0x500 [ 195.177311] do_syscall_64+0x3f/0x90 [ 195.177831] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 195.178561] RIP: 0033:0x7f130dd19d82 [ 195.179056] 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 [ 195.181415] RSP: 002b:00007fff3675dee8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 195.182413] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f130dd19d82 [ 195.183379] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f130d153000 [ 195.184321] RBP: 00007f130d153000 R08: 0000000000000009 R09: 0000000000001000 [ 195.185238] R10: 0000000000000812 R11: 0000000000000206 R12: 0000561c30136ec0 [ 195.186162] R13: 00007fff3675df00 R14: 00007fff3675df30 R15: 00007fff3675e290 [ 195.187082] [ 195.187413] [ 195.187643] Allocated by task 213: [ 195.188100] kasan_save_stack+0x22/0x50 [ 195.188648] kasan_set_track+0x25/0x30 [ 195.189160] __kasan_slab_alloc+0x59/0x70 [ 195.189722] kmem_cache_alloc+0x16b/0x370 [ 195.190277] vm_area_dup+0x20/0x160 [ 195.190769] __split_vma+0x170/0x950 [ 195.191260] split_vma+0xc6/0x110 [ 195.191735] mprotect_fixup+0x8d2/0xb30 [ 195.192271] do_mprotect_pkey+0x87e/0xd40 [ 195.192831] __x64_sys_mprotect+0x78/0xc0 [ 195.193400] do_syscall_64+0x3f/0x90 [ 195.193890] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 195.194594] [ 195.194818] Freed by task 213: [ 195.195223] kasan_save_stack+0x22/0x50 [ 195.195770] kasan_set_track+0x25/0x30 [ 195.196295] kasan_save_free_info+0x2b/0x50 [ 195.196853] __kasan_slab_free+0x10a/0x190 [ 195.197457] kmem_cache_free+0x10d/0x4d0 [ 195.198343] rcu_core+0x8c8/0x2860 [ 195.198953] __do_softirq+0x1b7/0x7d4 [ 195.199577] [ 195.199849] Last potentially related work creation: [ 195.200601] kasan_save_stack+0x22/0x50 [ 195.201239] __kasan_record_aux_stack+0x8e/0xa0 [ 195.201993] __call_rcu_common.constprop.0+0x6a/0xb90 [ 195.202836] remove_vma+0x139/0x170 [ 195.203427] do_vmi_align_munmap+0xd4a/0x11f0 [ 195.204136] do_vmi_munmap+0x1f1/0x2b0 [ 195.204773] __vm_munmap+0x138/0x3a0 [ 195.205385] __x64_sys_munmap+0x59/0x80 [ 195.206007] do_syscall_64+0x3f/0x90 [ 195.206643] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 195.207466] [ 195.207738] The buggy address belongs to the object at ffff88800f8939f8 [ 195.207738] which belongs to the cache vm_area_struct of size 168 [ 195.209622] The buggy address is located 88 bytes inside of [ 195.209622] freed 168-byte region [ffff88800f8939f8, ffff88800f893aa0) [ 195.211417] [ 195.211667] The buggy address belongs to the physical page: [ 195.212358] page:000000003870da64 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf893 [ 195.213485] memcg:ffff88800fc84201 [ 195.213925] flags: 0x100000000000200(slab|node=0|zone=1) [ 195.214619] page_type: 0xffffffff() [ 195.215078] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 195.216028] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800fc84201 [ 195.217006] page dumped because: kasan: bad access detected [ 195.217700] [ 195.217924] Memory state around the buggy address: [ 195.218561] ffff88800f893900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 195.219451] ffff88800f893980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa [ 195.220349] >ffff88800f893a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 195.221230] ^ [ 195.221972] ffff88800f893a80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 195.222879] ffff88800f893b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 195.223763] ================================================================== [ 195.224751] Disabling lock debugging due to kernel taint [ 197.277311] BUG: Bad rss-counter state mm:00000000c5a4adf0 type:MM_FILEPAGES val:33 [ 197.278297] BUG: Bad rss-counter state mm:00000000c5a4adf0 type:MM_ANONPAGES val:22 [ 197.775338] BUG: Bad rss-counter state mm:00000000f340bb73 type:MM_FILEPAGES val:33 [ 197.777360] BUG: Bad rss-counter state mm:00000000f340bb73 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:17033' (ECDSA) to the list of known hosts. 2023/06/20 05:40:11 fuzzer started 2023/06/20 05:40:11 dialing manager at localhost:44161 2023/06/20 05:40:11 checking machine... 2023/06/20 05:40:11 checking revisions... [ 198.524394] kmemleak: Automatic memory scanning thread ended 2023/06/20 05:40:12 testing simple program... [ 198.577830] cgroup: Unknown subsys name 'net' [ 198.627191] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 05:37:27 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=0000000000000001 RCX=0000000000000001 RDX=1ffff110028dff5f RSI=ffffffff811fc524 RDI=ffff8880146ffa98 RBP=ffff8880146ffaf0 RSP=ffff8880146ffa28 R8 =0000000000000001 R9 =ffff8880146ffad8 R10=0000000000038001 R11=000000000000fc0f R12=ffff8880146ffaf8 R13=ffff8880146ffae0 R14=ffff888014700000 R15=ffff8880146ffa98 RIP=ffffffff81130682 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 00007fcea8105900 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=00007fcea756e280 CR3=0000000014522000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=54e7db4e63833cde00000000000ae988 XMM05=0ef074493014d34f0000000000148400 XMM06=4589a922c2373da800000000001471a0 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=1ffffffff0bb715e RBX=ffffffff85db8af0 RCX=ffffffff813782a7 RDX=0000000000000000 RSI=ffffffff860d1670 RDI=ffffffff85db8aec RBP=ffffffff85db8aec RSP=ffff888008e57878 R8 =ffffffff860d1670 R9 =ffff888008e57970 R10=0000000000038001 R11=000000000000fdc6 R12=ffffffff85db8af4 R13=ffffffff85db8aec R14=ffffffff85db8aec R15=dffffc0000000000 RIP=ffffffff8112fc7f 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 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=00007f3482284618 CR3=000000000e16c000 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=2031313a30343a3530203032206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732031313a30343a3530203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000