syzkaller login: [ 26.640638] BUG: Bad rss-counter state mm:0000000040d8f5fb type:MM_FILEPAGES val:33 [ 26.642046] BUG: Bad rss-counter state mm:0000000040d8f5fb type:MM_ANONPAGES val:22 [ 26.782146] ================================================================== [ 26.783249] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 26.784413] Read of size 8 at addr ffff888019f62a50 by task sshd/220 [ 26.785534] [ 26.785792] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 26.786864] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 26.788102] Call Trace: [ 26.788490] [ 26.788799] dump_stack_lvl+0x91/0xf0 [ 26.789295] print_report+0xcc/0x620 [ 26.789791] ? __virt_addr_valid+0x102/0x340 [ 26.790350] ? vma_interval_tree_remove+0xc75/0xec0 [ 26.790966] ? vma_interval_tree_remove+0xc75/0xec0 [ 26.791600] kasan_report+0xbe/0xf0 [ 26.792075] ? vma_interval_tree_remove+0xc75/0xec0 [ 26.792721] vma_interval_tree_remove+0xc75/0xec0 [ 26.793341] vma_prepare+0xc54/0x11a0 [ 26.793821] __split_vma+0x5af/0x950 [ 26.794292] ? __pfx___split_vma+0x10/0x10 [ 26.794818] ? find_held_lock+0x2c/0x110 [ 26.795347] do_vmi_align_munmap+0x2ba/0x11f0 [ 26.795910] ? lock_is_held_type+0x9f/0x120 [ 26.796472] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 26.797091] ? mtree_range_walk+0x632/0x900 [ 26.797649] ? mas_walk+0x5c7/0x7c0 [ 26.798131] do_vmi_munmap+0x1f1/0x2b0 [ 26.798625] mmap_region+0x1f9/0x2660 [ 26.799129] ? vm_mmap_pgoff+0x15c/0x3a0 [ 26.799665] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 26.800446] ? __pfx_lock_acquire+0x10/0x10 [ 26.800990] ? __pfx_mmap_region+0x10/0x10 [ 26.801527] ? security_mmap_addr+0x7d/0xa0 [ 26.802060] ? get_unmapped_area+0x1f5/0x3f0 [ 26.802621] do_mmap+0x854/0xf00 [ 26.803061] vm_mmap_pgoff+0x1a6/0x3a0 [ 26.803564] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 26.804129] ksys_mmap_pgoff+0x3af/0x500 [ 26.804649] do_syscall_64+0x3f/0x90 [ 26.805139] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.805789] RIP: 0033:0x7effb2736d82 [ 26.806261] 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 [ 26.808447] RSP: 002b:00007ffc59265578 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 26.809372] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007effb2736d82 [ 26.810242] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007effb1b70000 [ 26.811118] RBP: 00007effb1b70000 R08: 0000000000000009 R09: 0000000000001000 [ 26.811981] R10: 0000000000000812 R11: 0000000000000206 R12: 0000557d7ef82d90 [ 26.812847] R13: 00007ffc59265590 R14: 00007ffc592655c0 R15: 00007ffc59265920 [ 26.813730] [ 26.814022] [ 26.814242] Allocated by task 213: [ 26.814680] kasan_save_stack+0x22/0x50 [ 26.815185] kasan_set_track+0x25/0x30 [ 26.815692] __kasan_slab_alloc+0x59/0x70 [ 26.816236] kmem_cache_alloc+0x16b/0x370 [ 26.816771] vm_area_dup+0x20/0x160 [ 26.817243] __split_vma+0x170/0x950 [ 26.817709] split_vma+0xc6/0x110 [ 26.818160] mprotect_fixup+0x8d2/0xb30 [ 26.818670] do_mprotect_pkey+0x87e/0xd40 [ 26.819203] __x64_sys_mprotect+0x78/0xc0 [ 26.819723] do_syscall_64+0x3f/0x90 [ 26.820202] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.820869] [ 26.821088] Freed by task 213: [ 26.821486] kasan_save_stack+0x22/0x50 [ 26.821993] kasan_set_track+0x25/0x30 [ 26.822494] kasan_save_free_info+0x2b/0x50 [ 26.823039] __kasan_slab_free+0x10a/0x190 [ 26.823581] kmem_cache_free+0x10d/0x4d0 [ 26.824106] rcu_core+0x8c8/0x2860 [ 26.824567] __do_softirq+0x1b7/0x7d4 [ 26.825060] [ 26.825277] Last potentially related work creation: [ 26.825871] kasan_save_stack+0x22/0x50 [ 26.826382] __kasan_record_aux_stack+0x8e/0xa0 [ 26.826958] __call_rcu_common.constprop.0+0x6a/0xb90 [ 26.827607] remove_vma+0x139/0x170 [ 26.828061] do_vmi_align_munmap+0xd4a/0x11f0 [ 26.828633] do_vmi_munmap+0x1f1/0x2b0 [ 26.829131] __vm_munmap+0x138/0x3a0 [ 26.829604] __x64_sys_munmap+0x59/0x80 [ 26.830105] do_syscall_64+0x3f/0x90 [ 26.830581] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.831241] [ 26.831463] The buggy address belongs to the object at ffff888019f629f8 [ 26.831463] which belongs to the cache vm_area_struct of size 168 [ 26.832965] The buggy address is located 88 bytes inside of [ 26.832965] freed 168-byte region [ffff888019f629f8, ffff888019f62aa0) [ 26.834488] [ 26.834697] The buggy address belongs to the physical page: [ 26.835339] page:0000000020bbadc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x19f62 [ 26.836425] memcg:ffff88801c0c2f01 [ 26.836844] flags: 0x100000000000200(slab|node=0|zone=1) [ 26.837473] page_type: 0xffffffff() [ 26.837916] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 26.838816] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801c0c2f01 [ 26.839717] page dumped because: kasan: bad access detected [ 26.840417] [ 26.840637] Memory state around the buggy address: [ 26.841225] ffff888019f62900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 26.842095] ffff888019f62980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa [ 26.842960] >ffff888019f62a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.843833] ^ [ 26.844566] ffff888019f62a80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 26.845434] ffff888019f62b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 26.846304] ================================================================== [ 26.847614] Disabling lock debugging due to kernel taint [ 28.663759] BUG: Bad rss-counter state mm:000000008250438e type:MM_FILEPAGES val:33 [ 28.664797] BUG: Bad rss-counter state mm:000000008250438e type:MM_ANONPAGES val:22 [ 29.180904] BUG: Bad rss-counter state mm:000000000a25f7bc type:MM_FILEPAGES val:33 [ 29.181958] BUG: Bad rss-counter state mm:000000000a25f7bc type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:3236' (ECDSA) to the list of known hosts. 2023/06/20 00:56:27 fuzzer started 2023/06/20 00:56:27 dialing manager at localhost:44161 2023/06/20 00:56:27 checking machine... 2023/06/20 00:56:27 checking revisions... [ 29.948215] kmemleak: Automatic memory scanning thread ended 2023/06/20 00:56:27 testing simple program... [ 29.998884] cgroup: Unknown subsys name 'net' [ 30.041385] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 00:56:24 Registers: info registers vcpu 0 RAX=0000000000000007 RBX=0000000000000000 RCX=ffffffff818943ee RDX=0000000000000000 RSI=0000000000000000 RDI=0000000000000000 RBP=ffff88800b5e0c98 RSP=ffff88801c917980 R8 =0000000000000005 R9 =00000000ffffffff R10=0000000000000000 R11=00000000000b6996 R12=0000000000000081 R13=ffffffff856f0b20 R14=ffff88800b5e0cc0 R15=0000000000000000 RIP=ffffffff814c02c8 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 00007fa3de4d2900 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=00007fa3dea87650 CR3=0000000019f34000 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=ffffffff00ffffffffffffffffffffff XMM01=707465675f6c697475646f6d6d61705f XMM02=ff000000000000ff0000000000ff0000 XMM03=66207463656e6e6f6373696420646576 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=0d0c0f0e09080b0a0504070601000302 XMM07=00000000000000000000000000000000 XMM08=000a0d732a2e25006c61746166003367 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=0000000000000000 RCX=0000000000000000 RDX=00000000000101f1 RSI=ffffffff821927d8 RDI=0000000000000007 RBP=ffff8880094e81a0 RSP=ffff88800f4277a0 R8 =0000000000000007 R9 =0000000000010000 R10=00000000000101f1 R11=0000000000000128 R12=00000000000101f1 R13=ffff8880094e8050 R14=ffff8880094e8048 R15=ffff8880094e8060 RIP=ffffffff821927de RFL=00000093 [--S-A-C] 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=00007fa3de3df000 CR3=00000000135de000 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=2037323a36353a3030203032206e754a XMM01=657463656e6e6f63736944203a5d3932 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3932325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732036323a36353a3030203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000