syzkaller login: [ 31.624046] BUG: Bad rss-counter state mm:00000000bde6c505 type:MM_FILEPAGES val:33 [ 31.625382] BUG: Bad rss-counter state mm:00000000bde6c505 type:MM_ANONPAGES val:22 [ 31.789947] ================================================================== [ 31.790856] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.791797] Read of size 8 at addr ffff888006885a50 by task sshd/220 [ 31.792587] [ 31.792807] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 31.793775] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.794764] Call Trace: [ 31.795088] <TASK> [ 31.795383] dump_stack_lvl+0x91/0xf0 [ 31.795879] print_report+0xcc/0x620 [ 31.796368] ? __virt_addr_valid+0x102/0x340 [ 31.796935] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.797555] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.798184] kasan_report+0xbe/0xf0 [ 31.798657] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.799280] vma_interval_tree_remove+0xc75/0xec0 [ 31.799884] vma_prepare+0xc54/0x11a0 [ 31.800362] __split_vma+0x5af/0x950 [ 31.801077] ? __pfx___split_vma+0x10/0x10 [ 31.801737] ? find_held_lock+0x2c/0x110 [ 31.802379] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.803085] ? lock_is_held_type+0x9f/0x120 [ 31.803760] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.804539] ? mtree_range_walk+0x632/0x900 [ 31.805218] ? mas_walk+0x5c7/0x7c0 [ 31.805796] do_vmi_munmap+0x1f1/0x2b0 [ 31.806400] mmap_region+0x1f9/0x2660 [ 31.806987] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.807621] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.808506] ? __pfx_lock_acquire+0x10/0x10 [ 31.809166] ? __pfx_mmap_region+0x10/0x10 [ 31.809813] ? security_mmap_addr+0x7d/0xa0 [ 31.810466] ? get_unmapped_area+0x1f5/0x3f0 [ 31.811145] do_mmap+0x854/0xf00 [ 31.811681] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.812288] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.812987] ksys_mmap_pgoff+0x3af/0x500 [ 31.813602] do_syscall_64+0x3f/0x90 [ 31.814191] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.814994] RIP: 0033:0x7f7ce0411d82 [ 31.815564] 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 [ 31.818076] RSP: 002b:00007fff33d73828 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.818985] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f7ce0411d82 [ 31.819823] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f7cdf84b000 [ 31.820686] RBP: 00007f7cdf84b000 R08: 0000000000000009 R09: 0000000000001000 [ 31.821522] R10: 0000000000000812 R11: 0000000000000206 R12: 0000560044826ec0 [ 31.822362] R13: 00007fff33d73840 R14: 00007fff33d73870 R15: 00007fff33d73bd0 [ 31.823211] </TASK> [ 31.823500] [ 31.823721] Allocated by task 213: [ 31.824144] kasan_save_stack+0x22/0x50 [ 31.824686] kasan_set_track+0x25/0x30 [ 31.825181] __kasan_slab_alloc+0x59/0x70 [ 31.825705] kmem_cache_alloc+0x16b/0x370 [ 31.826221] vm_area_dup+0x20/0x160 [ 31.826706] __split_vma+0x170/0x950 [ 31.827185] split_vma+0xc6/0x110 [ 31.827621] mprotect_fixup+0x8d2/0xb30 [ 31.828119] do_mprotect_pkey+0x87e/0xd40 [ 31.828642] __x64_sys_mprotect+0x78/0xc0 [ 31.829159] do_syscall_64+0x3f/0x90 [ 31.829639] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.830276] [ 31.830493] Freed by task 213: [ 31.830879] kasan_save_stack+0x22/0x50 [ 31.831378] kasan_set_track+0x25/0x30 [ 31.831872] kasan_save_free_info+0x2b/0x50 [ 31.832418] __kasan_slab_free+0x10a/0x190 [ 31.832959] kmem_cache_free+0x10d/0x4d0 [ 31.833475] rcu_core+0x8c8/0x2860 [ 31.833925] __do_softirq+0x1b7/0x7d4 [ 31.834398] [ 31.834617] Last potentially related work creation: [ 31.835212] kasan_save_stack+0x22/0x50 [ 31.835727] __kasan_record_aux_stack+0x8e/0xa0 [ 31.836306] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.836985] remove_vma+0x139/0x170 [ 31.837432] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.837993] do_vmi_munmap+0x1f1/0x2b0 [ 31.838487] __vm_munmap+0x138/0x3a0 [ 31.838966] __x64_sys_munmap+0x59/0x80 [ 31.839460] do_syscall_64+0x3f/0x90 [ 31.839931] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.840586] [ 31.840806] The buggy address belongs to the object at ffff8880068859f8 [ 31.840806] which belongs to the cache vm_area_struct of size 168 [ 31.842293] The buggy address is located 88 bytes inside of [ 31.842293] freed 168-byte region [ffff8880068859f8, ffff888006885aa0) [ 31.843711] [ 31.843929] The buggy address belongs to the physical page: [ 31.844616] page:0000000014907316 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x6885 [ 31.845702] memcg:ffff888016a53f01 [ 31.846129] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.846789] page_type: 0xffffffff() [ 31.847243] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 31.848169] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888016a53f01 [ 31.849089] page dumped because: kasan: bad access detected [ 31.849754] [ 31.849973] Memory state around the buggy address: [ 31.850551] ffff888006885900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.851406] ffff888006885980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa [ 31.852262] >ffff888006885a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.853143] ^ [ 31.853843] ffff888006885a80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 31.854703] ffff888006885b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.855567] ================================================================== [ 31.856660] Disabling lock debugging due to kernel taint [ 34.345036] BUG: Bad rss-counter state mm:00000000edf20408 type:MM_FILEPAGES val:33 [ 34.346290] BUG: Bad rss-counter state mm:00000000edf20408 type:MM_ANONPAGES val:22 [ 34.792011] BUG: Bad rss-counter state mm:0000000088792b54 type:MM_FILEPAGES val:33 [ 34.793024] BUG: Bad rss-counter state mm:0000000088792b54 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:41744' (ECDSA) to the list of known hosts. 2023/06/19 21:59:10 fuzzer started 2023/06/19 21:59:11 dialing manager at localhost:44161 2023/06/19 21:59:11 checking machine... 2023/06/19 21:59:11 checking revisions... [ 35.482852] kmemleak: Automatic memory scanning thread ended 2023/06/19 21:59:11 testing simple program... [ 35.528169] cgroup: Unknown subsys name 'net' [ 35.585681] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 21:59:10 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000001 RCX=ffffffff83874f32 RDX=0000000000000000 RSI=ffffffff863dcb36 RDI=ffffffff85fc0370 RBP=ffffffff85fc0370 RSP=ffff888018d673e0 R8 =ffffffff863dcb36 R9 =ffff888018d674d8 R10=0000000000038001 R11=0000000000091be7 R12=ffffffff85fc0370 R13=ffffffff85fc0370 R14=ffffffff85fc0370 R15=dffffc0000000000 RIP=ffffffff8112fc6e RFL=00000256 [---ZAP-] 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 00007fb9d33e6900 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=00007ffd5dc6e000 CR3=0000000010380000 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=635f6e6f69737365733a4d41503d706f XMM01=6f6c5f6d61702c78756e696c65735f6d XMM02=61702c74696d7265705f6d61702c7469 XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c58400 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 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 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=00007f14c65c8d30 CR3=000000000f350000 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=2030313a39353a3132203931206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732030313a39353a3132203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000