syzkaller login: [ 74.185810] BUG: Bad rss-counter state mm:0000000004c5abd3 type:MM_FILEPAGES val:33 [ 74.187015] BUG: Bad rss-counter state mm:0000000004c5abd3 type:MM_ANONPAGES val:22 [ 74.236708] ================================================================== [ 74.237770] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 74.239022] Read of size 8 at addr ffff88800ee7e058 by task sshd/220 [ 74.239866] [ 74.240141] CPU: 1 PID: 220 Comm: sshd Tainted: G L 6.4.0-rc7-next-20230619 #1 [ 74.241232] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 74.242339] Call Trace: [ 74.242720] [ 74.243059] dump_stack_lvl+0x91/0xf0 [ 74.243577] print_report+0xcc/0x620 [ 74.244089] ? __virt_addr_valid+0x102/0x340 [ 74.244676] ? vma_interval_tree_remove+0xc75/0xec0 [ 74.245330] ? vma_interval_tree_remove+0xc75/0xec0 [ 74.245979] kasan_report+0xbe/0xf0 [ 74.246495] ? vma_interval_tree_remove+0xc75/0xec0 [ 74.247172] vma_interval_tree_remove+0xc75/0xec0 [ 74.247837] vma_prepare+0xc54/0x11a0 [ 74.248365] __split_vma+0x5af/0x950 [ 74.248878] ? __pfx___split_vma+0x10/0x10 [ 74.249460] ? find_held_lock+0x2c/0x110 [ 74.250031] do_vmi_align_munmap+0x2ba/0x11f0 [ 74.250674] ? lock_is_held_type+0x9f/0x120 [ 74.251266] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 74.251941] ? mtree_range_walk+0x632/0x900 [ 74.252546] ? mas_walk+0x5c7/0x7c0 [ 74.253067] do_vmi_munmap+0x1f1/0x2b0 [ 74.253605] mmap_region+0x1f9/0x2660 [ 74.254138] ? vm_mmap_pgoff+0x15c/0x3a0 [ 74.254690] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 74.255480] ? __pfx_lock_acquire+0x10/0x10 [ 74.256067] ? __pfx_mmap_region+0x10/0x10 [ 74.256654] ? security_mmap_addr+0x7d/0xa0 [ 74.257234] ? get_unmapped_area+0x1f5/0x3f0 [ 74.257837] do_mmap+0x854/0xf00 [ 74.258327] vm_mmap_pgoff+0x1a6/0x3a0 [ 74.258872] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 74.259492] ksys_mmap_pgoff+0x3af/0x500 [ 74.260051] do_syscall_64+0x3f/0x90 [ 74.260572] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 74.261280] RIP: 0033:0x7fa756913d82 [ 74.261790] 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 [ 74.264134] RSP: 002b:00007fff29cfa3c8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 74.265133] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fa756913d82 [ 74.266064] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fa755d4d000 [ 74.267006] RBP: 00007fa755d4d000 R08: 0000000000000009 R09: 0000000000001000 [ 74.267939] R10: 0000000000000812 R11: 0000000000000206 R12: 00005606d5df9f70 [ 74.268873] R13: 00007fff29cfa3e0 R14: 00007fff29cfa410 R15: 00007fff29cfa770 [ 74.269818] [ 74.270149] [ 74.270385] Allocated by task 213: [ 74.270856] kasan_save_stack+0x22/0x50 [ 74.271410] kasan_set_track+0x25/0x30 [ 74.271955] __kasan_slab_alloc+0x59/0x70 [ 74.272535] kmem_cache_alloc+0x16b/0x370 [ 74.273109] vm_area_dup+0x20/0x160 [ 74.273606] __split_vma+0x170/0x950 [ 74.274135] split_vma+0xc6/0x110 [ 74.274618] mprotect_fixup+0x8d2/0xb30 [ 74.275169] do_mprotect_pkey+0x87e/0xd40 [ 74.275747] __x64_sys_mprotect+0x78/0xc0 [ 74.276320] do_syscall_64+0x3f/0x90 [ 74.276840] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 74.277537] [ 74.277856] Freed by task 213: [ 74.278436] kasan_save_stack+0x22/0x50 [ 74.279089] kasan_set_track+0x25/0x30 [ 74.279702] kasan_save_free_info+0x2b/0x50 [ 74.280358] __kasan_slab_free+0x10a/0x190 [ 74.281020] kmem_cache_free+0x10d/0x4d0 [ 74.281649] rcu_core+0x8c8/0x2860 [ 74.282230] __do_softirq+0x1b7/0x7d4 [ 74.282822] [ 74.283088] Last potentially related work creation: [ 74.283815] kasan_save_stack+0x22/0x50 [ 74.284435] __kasan_record_aux_stack+0x8e/0xa0 [ 74.285142] __call_rcu_common.constprop.0+0x6a/0xb90 [ 74.285935] remove_vma+0x139/0x170 [ 74.286499] do_vmi_align_munmap+0xd4a/0x11f0 [ 74.287189] do_vmi_munmap+0x1f1/0x2b0 [ 74.287794] __vm_munmap+0x138/0x3a0 [ 74.288378] __x64_sys_munmap+0x59/0x80 [ 74.289005] do_syscall_64+0x3f/0x90 [ 74.289597] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 74.290409] [ 74.290673] Second to last potentially related work creation: [ 74.291539] kasan_save_stack+0x22/0x50 [ 74.292143] __kasan_record_aux_stack+0x8e/0xa0 [ 74.292830] __call_rcu_common.constprop.0+0x6a/0xb90 [ 74.293593] remove_vma+0x139/0x170 [ 74.294156] do_vmi_align_munmap+0xd4a/0x11f0 [ 74.294796] do_vmi_munmap+0x1f1/0x2b0 [ 74.295291] mmap_region+0x1f9/0x2660 [ 74.295779] do_mmap+0x854/0xf00 [ 74.296206] vm_mmap_pgoff+0x1a6/0x3a0 [ 74.296694] ksys_mmap_pgoff+0x3af/0x500 [ 74.297197] do_syscall_64+0x3f/0x90 [ 74.297674] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 74.298340] [ 74.298560] The buggy address belongs to the object at ffff88800ee7e000 [ 74.298560] which belongs to the cache vm_area_struct of size 168 [ 74.300031] The buggy address is located 88 bytes inside of [ 74.300031] freed 168-byte region [ffff88800ee7e000, ffff88800ee7e0a8) [ 74.301410] [ 74.301623] The buggy address belongs to the physical page: [ 74.302296] page:0000000022498ac3 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xee7e [ 74.303354] memcg:ffff88800f176701 [ 74.303771] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 74.304456] page_type: 0xffffffff() [ 74.304900] raw: 0100000000000200 ffff88800879fc80 0000000000000000 dead000000000001 [ 74.305807] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800f176701 [ 74.306702] page dumped because: kasan: bad access detected [ 74.307358] [ 74.307572] Memory state around the buggy address: [ 74.308146] ffff88800ee7df00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc [ 74.308987] ffff88800ee7df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 74.309832] >ffff88800ee7e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 74.310691] ^ [ 74.311409] ffff88800ee7e080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 74.312246] ffff88800ee7e100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 74.313094] ================================================================== [ 74.314088] Disabling lock debugging due to kernel taint [ 76.311319] BUG: Bad rss-counter state mm:00000000779c684e type:MM_FILEPAGES val:33 [ 76.312455] BUG: Bad rss-counter state mm:00000000779c684e type:MM_ANONPAGES val:22 [ 76.782624] BUG: Bad rss-counter state mm:00000000df1be402 type:MM_FILEPAGES val:33 [ 76.784819] BUG: Bad rss-counter state mm:00000000df1be402 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:38430' (ECDSA) to the list of known hosts. 2023/06/19 11:57:12 fuzzer started 2023/06/19 11:57:13 dialing manager at localhost:44161 2023/06/19 11:57:13 checking machine... 2023/06/19 11:57:13 checking revisions... [ 77.550522] kmemleak: Automatic memory scanning thread ended 2023/06/19 11:57:13 testing simple program... [ 77.591436] cgroup: Unknown subsys name 'net' [ 77.647489] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 11:56:27 Registers: info registers vcpu 0 RAX=00000000f027f648 RBX=000000000ba8124e RCX=ffff888019f17bfc RDX=0000000000000009 RSI=0000000000000009 RDI=00000000e47fe3fa RBP=0000000000000001 RSP=ffff888019f17b70 R8 =000000006bf9e8d0 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=00000000000b6996 R12=0000000000000001 R13=0000000000000000 R14=ffff888019f17bd8 R15=0000000000000009 RIP=ffffffff82270eb9 RFL=00000296 [--S-AP-] 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 00007f1274eb5900 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=00007f127546d0b0 CR3=000000000ec7a000 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=ffffffffffffffffffffffff00000000 XMM01=000000000000000000005600746f6f72 XMM02=00000000000000000000000000000000 XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=2f3a746f6f723a303a303a3a746f6f72 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000010b7e RBX=0000000000000002 RCX=ffffffff813ad6cf RDX=000000000000000d RSI=ffffffff860d68c0 RDI=ffffffff85dbc1cc RBP=ffff88806cf09af0 RSP=ffff88806cf09a18 R8 =ffffffff860d68c0 R9 =ffff88806cf09ad8 R10=0000000000038001 R11=0000000000010b7e R12=ffff88806cf09af8 R13=ffff88806cf09ae0 R14=ffff88806cf09ad9 R15=ffff88806cf09a98 RIP=ffffffff8112fc12 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=00007ffe13848528 CR3=0000000005482000 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=00007f7d598d951000005583d42d3790 XMM02=6f6974707972636e6561737268746977 XMM03=00000000000000000000000000777074 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffff00ffffff00ffffff00ff XMM08=00002000000000202020002020200000 XMM09=ffffffffffff00ffffff00ffffff00ff XMM10=00002000000000202020002020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000