syzkaller login: [ 31.688513] BUG: Bad rss-counter state mm:00000000fa9a8bd9 type:MM_FILEPAGES val:33 [ 31.689738] BUG: Bad rss-counter state mm:00000000fa9a8bd9 type:MM_ANONPAGES val:22 [ 31.729610] ================================================================== [ 31.730548] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.731615] Read of size 8 at addr ffff888008ec2b38 by task sshd/220 [ 31.732384] [ 31.732601] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.733483] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.734469] Call Trace: [ 31.734787] [ 31.735071] dump_stack_lvl+0x91/0xf0 [ 31.735575] print_report+0xcc/0x620 [ 31.736058] ? __virt_addr_valid+0x102/0x340 [ 31.736612] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.737236] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.737856] kasan_report+0xbe/0xf0 [ 31.738333] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.738958] vma_interval_tree_remove+0xc75/0xec0 [ 31.739571] vma_prepare+0xc54/0x11a0 [ 31.740051] __split_vma+0x5af/0x950 [ 31.740527] ? __pfx___split_vma+0x10/0x10 [ 31.741068] ? find_held_lock+0x2c/0x110 [ 31.741604] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.742173] ? lock_is_held_type+0x9f/0x120 [ 31.742718] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.743339] ? mtree_range_walk+0x632/0x900 [ 31.743925] ? mas_walk+0x5c7/0x7c0 [ 31.744405] do_vmi_munmap+0x1f1/0x2b0 [ 31.744903] mmap_region+0x1f9/0x2660 [ 31.745396] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.745919] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.746648] ? __pfx_lock_acquire+0x10/0x10 [ 31.747187] ? __pfx_mmap_region+0x10/0x10 [ 31.747737] ? security_mmap_addr+0x7d/0xa0 [ 31.748287] ? get_unmapped_area+0x1f5/0x3f0 [ 31.748847] do_mmap+0x854/0xf00 [ 31.749292] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.749789] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.750370] ksys_mmap_pgoff+0x3af/0x500 [ 31.750895] do_syscall_64+0x3f/0x90 [ 31.751383] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.752052] RIP: 0033:0x7feef7df4d82 [ 31.752512] 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 [ 31.754674] RSP: 002b:00007ffd4262a1f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.755589] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007feef7df4d82 [ 31.756459] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007feef722e000 [ 31.757300] RBP: 00007feef722e000 R08: 0000000000000009 R09: 0000000000001000 [ 31.758155] R10: 0000000000000812 R11: 0000000000000206 R12: 00005566b2137f70 [ 31.759019] R13: 00007ffd4262a210 R14: 00007ffd4262a240 R15: 00007ffd4262a5a0 [ 31.759883] [ 31.760174] [ 31.760385] Allocated by task 213: [ 31.760812] kasan_save_stack+0x22/0x50 [ 31.761323] kasan_set_track+0x25/0x30 [ 31.761833] __kasan_slab_alloc+0x59/0x70 [ 31.762372] kmem_cache_alloc+0x16b/0x370 [ 31.762903] vm_area_dup+0x20/0x160 [ 31.763365] __split_vma+0x170/0x950 [ 31.763864] split_vma+0xc6/0x110 [ 31.764314] mprotect_fixup+0x8d2/0xb30 [ 31.764825] do_mprotect_pkey+0x87e/0xd40 [ 31.765361] __x64_sys_mprotect+0x78/0xc0 [ 31.765899] do_syscall_64+0x3f/0x90 [ 31.766391] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.767062] [ 31.767282] Freed by task 213: [ 31.767705] kasan_save_stack+0x22/0x50 [ 31.768221] kasan_set_track+0x25/0x30 [ 31.768730] kasan_save_free_info+0x2b/0x50 [ 31.769280] __kasan_slab_free+0x10a/0x190 [ 31.769829] kmem_cache_free+0x10d/0x4d0 [ 31.770357] rcu_core+0x8c8/0x2860 [ 31.770814] __do_softirq+0x1b7/0x7d4 [ 31.771306] [ 31.771545] Last potentially related work creation: [ 31.772149] kasan_save_stack+0x22/0x50 [ 31.772671] __kasan_record_aux_stack+0x8e/0xa0 [ 31.773260] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.773921] remove_vma+0x139/0x170 [ 31.774385] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.774959] do_vmi_munmap+0x1f1/0x2b0 [ 31.775470] __vm_munmap+0x138/0x3a0 [ 31.775953] __x64_sys_munmap+0x59/0x80 [ 31.776467] do_syscall_64+0x3f/0x90 [ 31.776951] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.777608] [ 31.777834] The buggy address belongs to the object at ffff888008ec2ae0 [ 31.777834] which belongs to the cache vm_area_struct of size 168 [ 31.779388] The buggy address is located 88 bytes inside of [ 31.779388] freed 168-byte region [ffff888008ec2ae0, ffff888008ec2b88) [ 31.780859] [ 31.781078] The buggy address belongs to the physical page: [ 31.781755] page:00000000a6c1d5d5 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8ec2 [ 31.782882] memcg:ffff88801673d801 [ 31.783324] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.784005] page_type: 0xffffffff() [ 31.784464] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 31.785412] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801673d801 [ 31.786356] page dumped because: kasan: bad access detected [ 31.787048] [ 31.787267] Memory state around the buggy address: [ 31.787882] ffff888008ec2a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.788767] ffff888008ec2a80: 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb [ 31.789660] >ffff888008ec2b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.790553] ^ [ 31.791187] ffff888008ec2b80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 31.792097] ffff888008ec2c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 31.792992] ================================================================== [ 31.794067] Disabling lock debugging due to kernel taint [ 33.673332] BUG: Bad rss-counter state mm:00000000af67beb6 type:MM_FILEPAGES val:33 [ 33.674539] BUG: Bad rss-counter state mm:00000000af67beb6 type:MM_ANONPAGES val:22 [ 34.120566] BUG: Bad rss-counter state mm:00000000a7dc5cc3 type:MM_FILEPAGES val:33 [ 34.121571] BUG: Bad rss-counter state mm:00000000a7dc5cc3 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:27448' (ECDSA) to the list of known hosts. 2023/06/20 18:04:40 fuzzer started 2023/06/20 18:04:40 dialing manager at localhost:36067 2023/06/20 18:04:40 checking machine... 2023/06/20 18:04:40 checking revisions... [ 34.941904] kmemleak: Automatic memory scanning thread ended 2023/06/20 18:04:40 testing simple program... [ 34.990782] cgroup: Unknown subsys name 'net' [ 35.046001] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 18:04:40 Registers: info registers vcpu 0 RAX=1ffff110018b17db RBX=ffff88800c58bea8 RCX=ffffffff812e0135 RDX=0000000000000000 RSI=0000000000000000 RDI=ffff88800c58bed8 RBP=ffff88800c6d4000 RSP=ffff88806ce09dd8 R8 =0000000000000001 R9 =ffffed100d9c13af R10=0000000000000003 R11=00000000000b6a61 R12=dffffc0000000000 R13=ffff88800c6d42e0 R14=ffffffff813782f8 R15=ffff88800c6d42e0 RIP=ffffffff818464e2 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 00007f221a990900 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=00007f3ef76dd650 CR3=0000000008eae000 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=00000000000000000000000000000000 XMM01=1e8bcf2f1c7658a0b943704f89ecfc9f XMM02=000000000011c410eff9b2d0a8fce9cb XMM03=000000000011c4e02c67c8bc2e329bc3 XMM04=cd9b28bd4161b1cb00000000000ae988 XMM05=164fb305b53a5e600000000000133c80 XMM06=19e9129bd510f2350000000000132b18 XMM07=fb795ef6d65770560000000000122d48 XMM08=2c67c8bc2e329bc3000000000011c480 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=0000000000000000 RCX=0000000000000000 RDX=1ffff11002d5eab7 RSI=ffffffff814c857a RDI=ffff888016af55b8 RBP=ffff888016af51c0 RSP=ffff88800fc27858 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=00000000000b6a61 R12=ffff888016af51c0 R13=0000000000000000 R14=ffffffff85652c08 R15=0000000000092cc0 RIP=ffffffff81374574 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 00007f3ef7128900 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=00007f3ef76df618 CR3=000000000e620000 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