syzkaller login: [ 60.613348] BUG: Bad rss-counter state mm:00000000cc43d6cd type:MM_FILEPAGES val:33 [ 60.615261] BUG: Bad rss-counter state mm:00000000cc43d6cd type:MM_ANONPAGES val:22 [ 60.777996] ================================================================== [ 60.779173] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 60.780533] Read of size 8 at addr ffff88800f5a8a50 by task sshd/220 [ 60.781294] [ 60.781513] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 60.782360] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 60.783322] Call Trace: [ 60.783659] [ 60.783948] dump_stack_lvl+0x91/0xf0 [ 60.784445] print_report+0xcc/0x620 [ 60.784969] ? __virt_addr_valid+0x102/0x340 [ 60.785571] ? vma_interval_tree_remove+0xc75/0xec0 [ 60.786243] ? vma_interval_tree_remove+0xc75/0xec0 [ 60.786888] kasan_report+0xbe/0xf0 [ 60.787395] ? vma_interval_tree_remove+0xc75/0xec0 [ 60.788065] vma_interval_tree_remove+0xc75/0xec0 [ 60.788690] vma_prepare+0xc54/0x11a0 [ 60.789214] __split_vma+0x5af/0x950 [ 60.789745] ? __pfx___split_vma+0x10/0x10 [ 60.790325] ? find_held_lock+0x2c/0x110 [ 60.790891] do_vmi_align_munmap+0x2ba/0x11f0 [ 60.791482] ? lock_is_held_type+0x9f/0x120 [ 60.792105] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 60.792770] ? mtree_range_walk+0x632/0x900 [ 60.793365] ? mas_walk+0x5c7/0x7c0 [ 60.793878] do_vmi_munmap+0x1f1/0x2b0 [ 60.794414] mmap_region+0x1f9/0x2660 [ 60.794942] ? vm_mmap_pgoff+0x15c/0x3a0 [ 60.795508] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 60.796303] ? __pfx_lock_acquire+0x10/0x10 [ 60.796878] ? __pfx_mmap_region+0x10/0x10 [ 60.797464] ? security_mmap_addr+0x7d/0xa0 [ 60.798043] ? get_unmapped_area+0x1f5/0x3f0 [ 60.798640] do_mmap+0x854/0xf00 [ 60.799132] vm_mmap_pgoff+0x1a6/0x3a0 [ 60.799686] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 60.800322] ksys_mmap_pgoff+0x3af/0x500 [ 60.800880] do_syscall_64+0x3f/0x90 [ 60.801407] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 60.802112] RIP: 0033:0x7f9839339d82 [ 60.802607] 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 [ 60.804921] RSP: 002b:00007ffc3dd39318 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 60.805920] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f9839339d82 [ 60.806852] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f9838773000 [ 60.807748] RBP: 00007f9838773000 R08: 0000000000000009 R09: 0000000000001000 [ 60.808655] R10: 0000000000000812 R11: 0000000000000206 R12: 000055b08a402f70 [ 60.809570] R13: 00007ffc3dd39330 R14: 00007ffc3dd39360 R15: 00007ffc3dd396c0 [ 60.810497] [ 60.810811] [ 60.811038] Allocated by task 213: [ 60.811520] kasan_save_stack+0x22/0x50 [ 60.812067] kasan_set_track+0x25/0x30 [ 60.812597] __kasan_slab_alloc+0x59/0x70 [ 60.813157] kmem_cache_alloc+0x16b/0x370 [ 60.813713] vm_area_dup+0x20/0x160 [ 60.814210] __split_vma+0x170/0x950 [ 60.814720] split_vma+0xc6/0x110 [ 60.815185] mprotect_fixup+0x8d2/0xb30 [ 60.815740] do_mprotect_pkey+0x87e/0xd40 [ 60.816304] __x64_sys_mprotect+0x78/0xc0 [ 60.816865] do_syscall_64+0x3f/0x90 [ 60.817377] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 60.818069] [ 60.818307] Freed by task 19: [ 60.818720] kasan_save_stack+0x22/0x50 [ 60.819267] kasan_set_track+0x25/0x30 [ 60.819808] kasan_save_free_info+0x2b/0x50 [ 60.820375] __kasan_slab_free+0x10a/0x190 [ 60.820953] kmem_cache_free+0x10d/0x4d0 [ 60.821505] rcu_core+0x8c8/0x2860 [ 60.821987] __do_softirq+0x1b7/0x7d4 [ 60.822488] [ 60.822725] Last potentially related work creation: [ 60.823355] kasan_save_stack+0x22/0x50 [ 60.823907] __kasan_record_aux_stack+0x8e/0xa0 [ 60.824522] __call_rcu_common.constprop.0+0x6a/0xb90 [ 60.825217] remove_vma+0x139/0x170 [ 60.825693] do_vmi_align_munmap+0xd4a/0x11f0 [ 60.826293] do_vmi_munmap+0x1f1/0x2b0 [ 60.826807] __vm_munmap+0x138/0x3a0 [ 60.827312] __x64_sys_munmap+0x59/0x80 [ 60.827849] do_syscall_64+0x3f/0x90 [ 60.828359] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 60.829052] [ 60.829285] Second to last potentially related work creation: [ 60.830023] kasan_save_stack+0x22/0x50 [ 60.830562] __kasan_record_aux_stack+0x8e/0xa0 [ 60.831180] __call_rcu_common.constprop.0+0x6a/0xb90 [ 60.831885] remove_vma+0x139/0x170 [ 60.832359] do_vmi_align_munmap+0xd4a/0x11f0 [ 60.832933] do_vmi_munmap+0x1f1/0x2b0 [ 60.833425] mmap_region+0x1f9/0x2660 [ 60.833954] do_mmap+0x854/0xf00 [ 60.834417] vm_mmap_pgoff+0x1a6/0x3a0 [ 60.834933] ksys_mmap_pgoff+0x3af/0x500 [ 60.835473] do_syscall_64+0x3f/0x90 [ 60.835991] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 60.836683] [ 60.836913] The buggy address belongs to the object at ffff88800f5a89f8 [ 60.836913] which belongs to the cache vm_area_struct of size 168 [ 60.838506] The buggy address is located 88 bytes inside of [ 60.838506] freed 168-byte region [ffff88800f5a89f8, ffff88800f5a8aa0) [ 60.840046] [ 60.840283] The buggy address belongs to the physical page: [ 60.841007] page:000000006edb5d38 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf5a8 [ 60.842157] memcg:ffff88800fc21a01 [ 60.842587] flags: 0x100000000000200(slab|node=0|zone=1) [ 60.843225] page_type: 0xffffffff() [ 60.843692] raw: 0100000000000200 ffff8880087a0c80 ffffea00003d5400 0000000000000002 [ 60.844597] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800fc21a01 [ 60.845496] page dumped because: kasan: bad access detected [ 60.846158] [ 60.846380] Memory state around the buggy address: [ 60.846956] ffff88800f5a8900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.847816] ffff88800f5a8980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa [ 60.848673] >ffff88800f5a8a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.849518] ^ [ 60.850185] ffff88800f5a8a80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 60.851007] ffff88800f5a8b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.851895] ================================================================== [ 60.852989] Disabling lock debugging due to kernel taint [ 63.298600] BUG: Bad rss-counter state mm:00000000d92bb169 type:MM_FILEPAGES val:33 [ 63.299832] BUG: Bad rss-counter state mm:00000000d92bb169 type:MM_ANONPAGES val:22 [ 63.685825] BUG: Bad rss-counter state mm:000000005c78c1f1 type:MM_FILEPAGES val:33 [ 63.687005] BUG: Bad rss-counter state mm:000000005c78c1f1 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:7075' (ECDSA) to the list of known hosts. 2023/06/21 04:14:01 fuzzer started 2023/06/21 04:14:01 dialing manager at localhost:36067 2023/06/21 04:14:01 checking machine... 2023/06/21 04:14:01 checking revisions... [ 64.341263] kmemleak: Automatic memory scanning thread ended 2023/06/21 04:14:01 testing simple program... [ 64.386806] cgroup: Unknown subsys name 'net' [ 64.477992] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 04:14:00 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000008000 RCX=0000000000008000 RDX=0000000000000009 RSI=0000000000000003 RDI=0000000000000010 RBP=00005587afe63350 RSP=00007ffc5ded4ee8 R8 =00005587afe83640 R9 =0000000000000000 R10=0000000000000001 R11=00005587afe883e8 R12=00000000ffffffe3 R13=00005587afe63350 R14=0000000000000005 R15=00005587afe83640 RIP=00007f287e8e9470 RFL=00000202 [-------] CPL=3 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0033 0000000000000000 ffffffff 00a0fb00 DPL=3 CS64 [-RA] SS =002b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f287e3f6900 00000000 00000000 GS =0000 0000000000000000 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=00007f287e9ae0b0 CR3=000000000f0b0000 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=25252525252525252525252525252525 XMM01=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=662079726f6d656d20666f2074756f00 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=00007fa671dca8f0 CR3=000000000ef4e000 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=56cb4911cab7bf86ab4b445546ccaaeb XMM02=2c67c8bc2e329bc3000000000011d738 XMM03=fb795ef6d65770560000000000121e00 XMM04=6a8389b02a188c4500000000000ae988 XMM05=19e9129bd510f2350000000000132fc8 XMM06=6a8c373f320479020000000000131e30 XMM07=e042d86d42eb936e0000000000122080 XMM08=3851b46f00a43db9000000000011d798 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000