syzkaller login: [ 31.079524] BUG: Bad rss-counter state mm:0000000000d9a33a type:MM_FILEPAGES val:33 [ 31.080972] BUG: Bad rss-counter state mm:0000000000d9a33a type:MM_ANONPAGES val:22 [ 31.250297] ================================================================== [ 31.251284] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.252222] Read of size 8 at addr ffff88801a1a7140 by task sshd/220 [ 31.253090] [ 31.253310] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.254195] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.255239] Call Trace: [ 31.255578] [ 31.255885] dump_stack_lvl+0x91/0xf0 [ 31.256376] print_report+0xcc/0x620 [ 31.256870] ? __virt_addr_valid+0x102/0x340 [ 31.257450] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.258096] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.258732] kasan_report+0xbe/0xf0 [ 31.259228] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.259862] vma_interval_tree_remove+0xc75/0xec0 [ 31.260478] vma_prepare+0xc54/0x11a0 [ 31.260966] __split_vma+0x5af/0x950 [ 31.261442] ? __pfx___split_vma+0x10/0x10 [ 31.261985] ? find_held_lock+0x2c/0x110 [ 31.262530] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.263105] ? lock_is_held_type+0x9f/0x120 [ 31.263652] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.264270] ? mtree_range_walk+0x632/0x900 [ 31.264837] ? mas_walk+0x5c7/0x7c0 [ 31.265318] do_vmi_munmap+0x1f1/0x2b0 [ 31.265827] mmap_region+0x1f9/0x2660 [ 31.266319] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.266858] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.267586] ? __pfx_lock_acquire+0x10/0x10 [ 31.268121] ? __pfx_mmap_region+0x10/0x10 [ 31.268662] ? security_mmap_addr+0x7d/0xa0 [ 31.269188] ? get_unmapped_area+0x1f5/0x3f0 [ 31.269737] do_mmap+0x854/0xf00 [ 31.270174] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.270674] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.271234] ksys_mmap_pgoff+0x3af/0x500 [ 31.271747] do_syscall_64+0x3f/0x90 [ 31.272225] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.272871] RIP: 0033:0x7fb2eb1e2d82 [ 31.273325] 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 [ 31.275463] RSP: 002b:00007ffc2a8fd388 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.276371] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fb2eb1e2d82 [ 31.277229] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fb2ea61c000 [ 31.278087] RBP: 00007fb2ea61c000 R08: 0000000000000009 R09: 0000000000001000 [ 31.278950] R10: 0000000000000812 R11: 0000000000000206 R12: 0000562f557ebd90 [ 31.279801] R13: 00007ffc2a8fd3a0 R14: 00007ffc2a8fd3d0 R15: 00007ffc2a8fd730 [ 31.280670] [ 31.280960] [ 31.281177] Allocated by task 213: [ 31.281611] kasan_save_stack+0x22/0x50 [ 31.282123] kasan_set_track+0x25/0x30 [ 31.282642] __kasan_slab_alloc+0x59/0x70 [ 31.283197] kmem_cache_alloc+0x16b/0x370 [ 31.283758] vm_area_dup+0x20/0x160 [ 31.284232] __split_vma+0x170/0x950 [ 31.284738] split_vma+0xc6/0x110 [ 31.285200] mprotect_fixup+0x8d2/0xb30 [ 31.285729] do_mprotect_pkey+0x87e/0xd40 [ 31.286281] __x64_sys_mprotect+0x78/0xc0 [ 31.286840] do_syscall_64+0x3f/0x90 [ 31.287348] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.288026] [ 31.288247] Freed by task 213: [ 31.288667] kasan_save_stack+0x22/0x50 [ 31.289206] kasan_set_track+0x25/0x30 [ 31.289738] kasan_save_free_info+0x2b/0x50 [ 31.290307] __kasan_slab_free+0x10a/0x190 [ 31.290887] kmem_cache_free+0x10d/0x4d0 [ 31.291432] rcu_core+0x8c8/0x2860 [ 31.291904] __do_softirq+0x1b7/0x7d4 [ 31.292417] [ 31.292645] Last potentially related work creation: [ 31.293275] kasan_save_stack+0x22/0x50 [ 31.293817] __kasan_record_aux_stack+0x8e/0xa0 [ 31.294441] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.295131] remove_vma+0x139/0x170 [ 31.295612] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.296202] do_vmi_munmap+0x1f1/0x2b0 [ 31.296718] __vm_munmap+0x138/0x3a0 [ 31.297215] __x64_sys_munmap+0x59/0x80 [ 31.297743] do_syscall_64+0x3f/0x90 [ 31.298245] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.298925] [ 31.299151] The buggy address belongs to the object at ffff88801a1a70e8 [ 31.299151] which belongs to the cache vm_area_struct of size 168 [ 31.300737] The buggy address is located 88 bytes inside of [ 31.300737] freed 168-byte region [ffff88801a1a70e8, ffff88801a1a7190) [ 31.302231] [ 31.302471] The buggy address belongs to the physical page: [ 31.303178] page:000000000b7ee4ab refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a1a7 [ 31.304349] memcg:ffff88800ea90201 [ 31.304802] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.305491] page_type: 0xffffffff() [ 31.305981] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 31.306982] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ea90201 [ 31.307954] page dumped because: kasan: bad access detected [ 31.308661] [ 31.308893] Memory state around the buggy address: [ 31.309511] ffff88801a1a7000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.310438] ffff88801a1a7080: 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb [ 31.311361] >ffff88801a1a7100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.312268] ^ [ 31.312967] ffff88801a1a7180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 31.313886] ffff88801a1a7200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 31.314814] ================================================================== [ 31.315858] Disabling lock debugging due to kernel taint [ 33.523395] BUG: Bad rss-counter state mm:0000000077a4c05c type:MM_FILEPAGES val:33 [ 33.524386] BUG: Bad rss-counter state mm:0000000077a4c05c type:MM_ANONPAGES val:22 [ 34.090244] BUG: Bad rss-counter state mm:00000000a10b018f type:MM_FILEPAGES val:33 [ 34.091460] BUG: Bad rss-counter state mm:00000000a10b018f type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:31083' (ECDSA) to the list of known hosts. 2023/06/21 07:49:03 fuzzer started 2023/06/21 07:49:04 dialing manager at localhost:36067 2023/06/21 07:49:04 checking machine... 2023/06/21 07:49:04 checking revisions... [ 34.802377] kmemleak: Automatic memory scanning thread ended 2023/06/21 07:49:04 testing simple program... [ 34.847020] cgroup: Unknown subsys name 'net' [ 34.899380] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 07:49:03 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffff888008d9f978 RCX=0000000000000001 RDX=1ffff110011b3f31 RSI=ffff888008d9fe58 RDI=ffff888008d9f988 RBP=ffff888008d9fe58 RSP=ffff888008d9f8d0 R8 =ffffffff860d2fe0 R9 =ffff888008d9f9b8 R10=0000000000038001 R11=000000000000fdcc R12=0000000000000008 R13=ffff888008d98000 R14=ffff888008d9fe60 R15=ffff888008d9f978 RIP=ffffffff81130468 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 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=00007fd5f7b042d0 CR3=0000000016f04000 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=2033303a39343a3730203132206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732033303a39343a3730203132 XMM08=69767265733d7373616c63742030733a XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=1ffffffff0bbfb97 RBX=ffffffff85dfdcb8 RCX=ffffffff81809a90 RDX=0000000000000000 RSI=ffffffff86138976 RDI=ffffffff85dfdcb8 RBP=ffffffff85dfdcb8 RSP=ffff88806cf099b8 R8 =ffffffff86138976 R9 =ffff88806cf09ab0 R10=0000000000038001 R11=0000000000020cbd R12=ffffffff85dfdcb8 R13=ffffffff85dfdcb8 R14=ffffffff85dfdcb8 R15=dffffc0000000000 RIP=ffffffff8112fc7a RFL=00000212 [----A--] 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 00007f71f6547900 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=00007ffe9ccf6000 CR3=00000000103a4000 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=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