syzkaller login: [ 28.778963] BUG: Bad rss-counter state mm:00000000a2e4d94e type:MM_FILEPAGES val:33 [ 28.780728] BUG: Bad rss-counter state mm:00000000a2e4d94e type:MM_ANONPAGES val:22 [ 28.933346] ================================================================== [ 28.934489] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.935396] Read of size 8 at addr ffff88800e0f4228 by task sshd/218 [ 28.936300] [ 28.936537] CPU: 1 PID: 218 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 28.937397] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.938368] Call Trace: [ 28.938668] [ 28.938948] dump_stack_lvl+0x91/0xf0 [ 28.939424] print_report+0xcc/0x620 [ 28.939892] ? __virt_addr_valid+0x102/0x340 [ 28.940515] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.941131] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.941727] kasan_report+0xbe/0xf0 [ 28.942184] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.942796] vma_interval_tree_remove+0xc75/0xec0 [ 28.943390] vma_prepare+0xc54/0x11a0 [ 28.943858] __split_vma+0x5af/0x950 [ 28.944326] ? __pfx___split_vma+0x10/0x10 [ 28.944840] ? find_held_lock+0x2c/0x110 [ 28.945341] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.945890] ? lock_is_held_type+0x9f/0x120 [ 28.946456] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.947062] ? mtree_range_walk+0x632/0x900 [ 28.947609] ? mas_walk+0x5c7/0x7c0 [ 28.948075] do_vmi_munmap+0x1f1/0x2b0 [ 28.948566] mmap_region+0x1f9/0x2660 [ 28.949044] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.949551] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.950269] ? __pfx_lock_acquire+0x10/0x10 [ 28.950807] ? __pfx_mmap_region+0x10/0x10 [ 28.951335] ? security_mmap_addr+0x7d/0xa0 [ 28.951872] ? get_unmapped_area+0x1f5/0x3f0 [ 28.952413] do_mmap+0x854/0xf00 [ 28.952856] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.953342] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.953899] ksys_mmap_pgoff+0x3af/0x500 [ 28.954431] do_syscall_64+0x3f/0x90 [ 28.954904] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.955550] RIP: 0033:0x7f13b1f49d82 [ 28.956009] 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 [ 28.958125] RSP: 002b:00007ffcd23aa4f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.959012] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f13b1f49d82 [ 28.959824] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f13b1383000 [ 28.960631] RBP: 00007f13b1383000 R08: 0000000000000009 R09: 0000000000001000 [ 28.961423] R10: 0000000000000812 R11: 0000000000000206 R12: 0000561db5c46ec0 [ 28.962231] R13: 00007ffcd23aa510 R14: 00007ffcd23aa540 R15: 00007ffcd23aa8a0 [ 28.963040] [ 28.963321] [ 28.963525] Allocated by task 211: [ 28.963927] kasan_save_stack+0x22/0x50 [ 28.964406] kasan_set_track+0x25/0x30 [ 28.964873] __kasan_slab_alloc+0x59/0x70 [ 28.965372] kmem_cache_alloc+0x16b/0x370 [ 28.965865] vm_area_dup+0x20/0x160 [ 28.966317] __split_vma+0x170/0x950 [ 28.966840] split_vma+0xc6/0x110 [ 28.967352] mprotect_fixup+0x8d2/0xb30 [ 28.967944] do_mprotect_pkey+0x87e/0xd40 [ 28.968554] __x64_sys_mprotect+0x78/0xc0 [ 28.969167] do_syscall_64+0x3f/0x90 [ 28.969721] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.970496] [ 28.970747] Freed by task 211: [ 28.971210] kasan_save_stack+0x22/0x50 [ 28.971799] kasan_set_track+0x25/0x30 [ 28.972380] kasan_save_free_info+0x2b/0x50 [ 28.973008] __kasan_slab_free+0x10a/0x190 [ 28.973631] kmem_cache_free+0x10d/0x4d0 [ 28.974242] rcu_core+0x8c8/0x2860 [ 28.974765] __do_softirq+0x1b7/0x7d4 [ 28.975325] [ 28.975579] Last potentially related work creation: [ 28.976268] kasan_save_stack+0x22/0x50 [ 28.976863] __kasan_record_aux_stack+0x8e/0xa0 [ 28.977600] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.978362] remove_vma+0x139/0x170 [ 28.978864] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.979512] do_vmi_munmap+0x1f1/0x2b0 [ 28.980082] __vm_munmap+0x138/0x3a0 [ 28.980631] __x64_sys_munmap+0x59/0x80 [ 28.981220] do_syscall_64+0x3f/0x90 [ 28.981779] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.982560] [ 28.982811] Second to last potentially related work creation: [ 28.983618] kasan_save_stack+0x22/0x50 [ 28.984211] __kasan_record_aux_stack+0x8e/0xa0 [ 28.984882] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.985640] remove_vma+0x139/0x170 [ 28.986183] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.986838] do_vmi_munmap+0x1f1/0x2b0 [ 28.987411] mmap_region+0x1f9/0x2660 [ 28.987973] do_mmap+0x854/0xf00 [ 28.988504] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.989082] ksys_mmap_pgoff+0x3af/0x500 [ 28.989676] do_syscall_64+0x3f/0x90 [ 28.990249] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.991007] [ 28.991257] The buggy address belongs to the object at ffff88800e0f41d0 [ 28.991257] which belongs to the cache vm_area_struct of size 168 [ 28.992985] The buggy address is located 88 bytes inside of [ 28.992985] freed 168-byte region [ffff88800e0f41d0, ffff88800e0f4278) [ 28.994646] [ 28.994899] The buggy address belongs to the physical page: [ 28.995674] page:00000000ecb16201 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe0f4 [ 28.996953] memcg:ffff88800e8a0901 [ 28.997454] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 28.998285] page_type: 0xffffffff() [ 28.998812] raw: 0100000000000200 ffff8880087a0c80 0000000000000000 dead000000000001 [ 28.999891] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e8a0901 [ 29.000964] page dumped because: kasan: bad access detected [ 29.001738] [ 29.002011] Memory state around the buggy address: [ 29.002698] ffff88800e0f4100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 29.003706] ffff88800e0f4180: 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 29.004715] >ffff88800e0f4200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 29.005716] ^ [ 29.006382] ffff88800e0f4280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 29.007390] ffff88800e0f4300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 29.008396] ================================================================== [ 29.009485] Disabling lock debugging due to kernel taint [ 30.829843] BUG: Bad rss-counter state mm:00000000fa4c119f type:MM_FILEPAGES val:33 [ 30.831052] BUG: Bad rss-counter state mm:00000000fa4c119f type:MM_ANONPAGES val:22 [ 31.370303] BUG: Bad rss-counter state mm:00000000c56ee5b0 type:MM_FILEPAGES val:33 [ 31.371557] BUG: Bad rss-counter state mm:00000000c56ee5b0 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:10681' (ECDSA) to the list of known hosts. 2023/06/21 04:36:38 fuzzer started 2023/06/21 04:36:38 dialing manager at localhost:36067 2023/06/21 04:36:38 checking machine... 2023/06/21 04:36:38 checking revisions... [ 32.038721] kmemleak: Automatic memory scanning thread ended 2023/06/21 04:36:38 testing simple program... [ 32.093229] cgroup: Unknown subsys name 'net' [ 32.133367] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 04:36:37 Registers: info registers vcpu 0 RAX=ffffffff818475d2 RBX=ffffffff813ad470 RCX=ffffffff8613f401 RDX=1ffff11002bb5f4b RSI=ffffffff818475d2 RDI=ffff888015dafac8 RBP=ffff888015dafa98 RSP=ffff888015daf9f8 R8 =ffffffff8613f412 R9 =ffff888015dafa40 R10=0000000000038001 R11=0000000000021e7d R12=ffff888015dafac8 R13=0000000000000000 R14=ffff8880164ed1c0 R15=ffff88800f1b3d10 RIP=ffffffff84538440 RFL=00000286 [--S--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 00007f8751c7c900 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=00007ffec4ed9000 CR3=000000000b36a000 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=74696d7265705f6d61703d73726f746e XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=61662029286e65706f5f746964756100 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=0000000000000001 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=00007f108b062230 CR3=000000000c548000 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=2037333a36333a3430203132206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732037333a36333a3430203132 XMM08=69767265733d7373616c63742030733a XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000