syzkaller login: [ 30.577263] BUG: Bad rss-counter state mm:00000000c0ff5d62 type:MM_FILEPAGES val:33 [ 30.578408] BUG: Bad rss-counter state mm:00000000c0ff5d62 type:MM_ANONPAGES val:22 [ 30.766581] ================================================================== [ 30.767564] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.768659] Read of size 8 at addr ffff88800e070058 by task sshd/224 [ 30.769513] [ 30.769744] CPU: 0 PID: 224 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.770676] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.771716] Call Trace: [ 30.772059] [ 30.772369] dump_stack_lvl+0x91/0xf0 [ 30.772895] print_report+0xcc/0x620 [ 30.773435] ? __virt_addr_valid+0x102/0x340 [ 30.774025] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.774684] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.775331] kasan_report+0xbe/0xf0 [ 30.775845] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.776525] vma_interval_tree_remove+0xc75/0xec0 [ 30.777190] vma_prepare+0xc54/0x11a0 [ 30.777723] __split_vma+0x5af/0x950 [ 30.778243] ? __pfx___split_vma+0x10/0x10 [ 30.778826] ? find_held_lock+0x2c/0x110 [ 30.779397] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.780011] ? lock_is_held_type+0x9f/0x120 [ 30.780595] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.781268] ? mtree_range_walk+0x632/0x900 [ 30.781872] ? mas_walk+0x5c7/0x7c0 [ 30.782386] do_vmi_munmap+0x1f1/0x2b0 [ 30.782923] mmap_region+0x1f9/0x2660 [ 30.783453] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.784017] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.784790] ? __pfx_lock_acquire+0x10/0x10 [ 30.785382] ? __pfx_mmap_region+0x10/0x10 [ 30.785970] ? security_mmap_addr+0x7d/0xa0 [ 30.786548] ? get_unmapped_area+0x1f5/0x3f0 [ 30.787148] do_mmap+0x854/0xf00 [ 30.787630] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.788172] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.788780] ksys_mmap_pgoff+0x3af/0x500 [ 30.789354] do_syscall_64+0x3f/0x90 [ 30.789877] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.790589] RIP: 0033:0x7f15c6666d82 [ 30.791096] 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 [ 30.793437] RSP: 002b:00007ffc085d1bc8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.794436] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f15c6666d82 [ 30.795373] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f15c5aa0000 [ 30.796297] RBP: 00007f15c5aa0000 R08: 0000000000000009 R09: 0000000000001000 [ 30.797228] R10: 0000000000000812 R11: 0000000000000206 R12: 0000564d3f957ec0 [ 30.798159] R13: 00007ffc085d1be0 R14: 00007ffc085d1c10 R15: 00007ffc085d1f70 [ 30.799097] [ 30.799415] [ 30.799652] Allocated by task 214: [ 30.800123] kasan_save_stack+0x22/0x50 [ 30.800680] kasan_set_track+0x25/0x30 [ 30.801226] __kasan_slab_alloc+0x59/0x70 [ 30.801803] kmem_cache_alloc+0x16b/0x370 [ 30.802370] vm_area_dup+0x20/0x160 [ 30.802863] __split_vma+0x170/0x950 [ 30.803374] split_vma+0xc6/0x110 [ 30.803855] mprotect_fixup+0x8d2/0xb30 [ 30.804401] do_mprotect_pkey+0x87e/0xd40 [ 30.804973] __x64_sys_mprotect+0x78/0xc0 [ 30.805553] do_syscall_64+0x3f/0x90 [ 30.806070] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.806775] [ 30.807013] Freed by task 214: [ 30.807438] kasan_save_stack+0x22/0x50 [ 30.807985] kasan_set_track+0x25/0x30 [ 30.808530] kasan_save_free_info+0x2b/0x50 [ 30.809120] __kasan_slab_free+0x10a/0x190 [ 30.809712] kmem_cache_free+0x10d/0x4d0 [ 30.810268] rcu_core+0x8c8/0x2860 [ 30.810755] __do_softirq+0x1b7/0x7d4 [ 30.811278] [ 30.811516] Last potentially related work creation: [ 30.812154] kasan_save_stack+0x22/0x50 [ 30.812709] __kasan_record_aux_stack+0x8e/0xa0 [ 30.813347] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.814048] remove_vma+0x139/0x170 [ 30.814546] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.815163] do_vmi_munmap+0x1f1/0x2b0 [ 30.815698] __vm_munmap+0x138/0x3a0 [ 30.816216] __x64_sys_munmap+0x59/0x80 [ 30.816767] do_syscall_64+0x3f/0x90 [ 30.817298] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.818002] [ 30.818238] Second to last potentially related work creation: [ 30.818989] kasan_save_stack+0x22/0x50 [ 30.819544] __kasan_record_aux_stack+0x8e/0xa0 [ 30.820176] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.820883] remove_vma+0x139/0x170 [ 30.821385] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.821997] do_vmi_munmap+0x1f1/0x2b0 [ 30.822534] mmap_region+0x1f9/0x2660 [ 30.823056] do_mmap+0x854/0xf00 [ 30.823528] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.824061] ksys_mmap_pgoff+0x3af/0x500 [ 30.824614] do_syscall_64+0x3f/0x90 [ 30.825130] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.825849] [ 30.826087] The buggy address belongs to the object at ffff88800e070000 [ 30.826087] which belongs to the cache vm_area_struct of size 168 [ 30.827700] The buggy address is located 88 bytes inside of [ 30.827700] freed 168-byte region [ffff88800e070000, ffff88800e0700a8) [ 30.829263] [ 30.829501] The buggy address belongs to the physical page: [ 30.830233] page:00000000dd2a87f9 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe070 [ 30.831422] memcg:ffff88801411b701 [ 30.831890] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.832604] page_type: 0xffffffff() [ 30.833099] raw: 0100000000000200 ffff88800879fc80 dead000000000100 dead000000000122 [ 30.834119] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801411b701 [ 30.835114] page dumped because: kasan: bad access detected [ 30.835836] [ 30.836070] Memory state around the buggy address: [ 30.836706] ffff88800e06ff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.837651] ffff88800e06ff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.838591] >ffff88800e070000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.839537] ^ [ 30.840331] ffff88800e070080: fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 00 [ 30.841289] ffff88800e070100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.842217] ================================================================== [ 30.843355] Disabling lock debugging due to kernel taint [ 33.312523] BUG: Bad rss-counter state mm:00000000a1642b60 type:MM_FILEPAGES val:33 [ 33.313616] BUG: Bad rss-counter state mm:00000000a1642b60 type:MM_ANONPAGES val:22 [ 33.718828] BUG: Bad rss-counter state mm:0000000086439fc4 type:MM_FILEPAGES val:33 [ 33.720001] BUG: Bad rss-counter state mm:0000000086439fc4 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:34848' (ECDSA) to the list of known hosts. 2023/06/19 15:05:24 fuzzer started 2023/06/19 15:05:24 dialing manager at localhost:44161 2023/06/19 15:05:24 checking machine... 2023/06/19 15:05:24 checking revisions... [ 34.246473] kmemleak: Automatic memory scanning thread ended 2023/06/19 15:05:24 testing simple program... [ 34.288318] cgroup: Unknown subsys name 'net' [ 34.330291] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 15:05:22 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8450c50e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=0000000000000001 R12=ffffffff85d3bed0 R13=1ffffffff0a80fc7 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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 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=00007f9d503c1e60 CR3=0000000015848000 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=35303a3531203931206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3133325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320383233 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=dffffc0000000000 RBX=ffff88806cf35000 RCX=ffffffff812d8ec3 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3bed0 RBP=0000000000000000 RSP=ffff88806cf09928 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=00000000000b6996 R12=0000000000000002 R13=0000000000000000 R14=ffffffff8560b640 R15=0000000000000000 RIP=ffffffff8135b910 RFL=00000216 [----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 00007faf8771f900 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=00007fff48156000 CR3=000000000fdf4000 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=6720646572637465733a4d41503d706f XMM01=652022746f6f72223d74636361207469 XMM02=3d6c616e696d72657420322e322e302e XMM03=3d656d616e74736f682022646873732f XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000