syzkaller login: [ 36.591067] BUG: Bad rss-counter state mm:0000000000d5eb6b type:MM_FILEPAGES val:33 [ 36.592375] BUG: Bad rss-counter state mm:0000000000d5eb6b type:MM_ANONPAGES val:22 [ 36.723407] ================================================================== [ 36.724107] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 36.724772] Read of size 8 at addr ffff888019a91140 by task sshd/220 [ 36.725340] [ 36.725492] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 36.726088] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 36.726779] Call Trace: [ 36.727004] [ 36.727202] dump_stack_lvl+0x91/0xf0 [ 36.727692] print_report+0xcc/0x620 [ 36.728027] ? __virt_addr_valid+0x102/0x340 [ 36.728414] ? vma_interval_tree_remove+0xc75/0xec0 [ 36.728862] ? vma_interval_tree_remove+0xc75/0xec0 [ 36.729291] kasan_report+0xbe/0xf0 [ 36.729620] ? vma_interval_tree_remove+0xc75/0xec0 [ 36.730066] vma_interval_tree_remove+0xc75/0xec0 [ 36.730487] vma_prepare+0xc54/0x11a0 [ 36.730819] __split_vma+0x5af/0x950 [ 36.731150] ? __pfx___split_vma+0x10/0x10 [ 36.731526] ? find_held_lock+0x2c/0x110 [ 36.731899] do_vmi_align_munmap+0x2ba/0x11f0 [ 36.732296] ? lock_is_held_type+0x9f/0x120 [ 36.732674] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 36.733128] ? mtree_range_walk+0x632/0x900 [ 36.733526] ? mas_walk+0x5c7/0x7c0 [ 36.733856] do_vmi_munmap+0x1f1/0x2b0 [ 36.734200] mmap_region+0x1f9/0x2660 [ 36.734538] ? vm_mmap_pgoff+0x15c/0x3a0 [ 36.734895] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 36.735405] ? __pfx_lock_acquire+0x10/0x10 [ 36.735774] ? __pfx_mmap_region+0x10/0x10 [ 36.736138] ? security_mmap_addr+0x7d/0xa0 [ 36.736509] ? get_unmapped_area+0x1f5/0x3f0 [ 36.736917] do_mmap+0x854/0xf00 [ 36.737233] vm_mmap_pgoff+0x1a6/0x3a0 [ 36.737583] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 36.737979] ksys_mmap_pgoff+0x3af/0x500 [ 36.738342] do_syscall_64+0x3f/0x90 [ 36.738676] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 36.739124] RIP: 0033:0x7f267e5c0d82 [ 36.739448] 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 [ 36.740970] RSP: 002b:00007ffde8033828 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 36.741606] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f267e5c0d82 [ 36.742202] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f267d9fa000 [ 36.742794] RBP: 00007f267d9fa000 R08: 0000000000000009 R09: 0000000000001000 [ 36.743390] R10: 0000000000000812 R11: 0000000000000206 R12: 000055c4c2716ec0 [ 36.743978] R13: 00007ffde8033840 R14: 00007ffde8033870 R15: 00007ffde8033bd0 [ 36.744577] [ 36.744783] [ 36.744958] Allocated by task 213: [ 36.745255] kasan_save_stack+0x22/0x50 [ 36.745606] kasan_set_track+0x25/0x30 [ 36.745946] __kasan_slab_alloc+0x59/0x70 [ 36.746309] kmem_cache_alloc+0x16b/0x370 [ 36.746670] vm_area_dup+0x20/0x160 [ 36.746987] __split_vma+0x170/0x950 [ 36.747315] split_vma+0xc6/0x110 [ 36.747618] mprotect_fixup+0x8d2/0xb30 [ 36.747968] do_mprotect_pkey+0x87e/0xd40 [ 36.748339] __x64_sys_mprotect+0x78/0xc0 [ 36.748699] do_syscall_64+0x3f/0x90 [ 36.749066] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 36.749507] [ 36.749658] Freed by task 203: [ 36.749929] kasan_save_stack+0x22/0x50 [ 36.750283] kasan_set_track+0x25/0x30 [ 36.750624] kasan_save_free_info+0x2b/0x50 [ 36.750997] __kasan_slab_free+0x10a/0x190 [ 36.751368] kmem_cache_free+0x10d/0x4d0 [ 36.751727] rcu_core+0x8c8/0x2860 [ 36.752040] __do_softirq+0x1b7/0x7d4 [ 36.752385] [ 36.752536] Last potentially related work creation: [ 36.752968] kasan_save_stack+0x22/0x50 [ 36.753316] __kasan_record_aux_stack+0x8e/0xa0 [ 36.753720] __call_rcu_common.constprop.0+0x6a/0xb90 [ 36.754170] remove_vma+0x139/0x170 [ 36.754497] do_vmi_align_munmap+0xd4a/0x11f0 [ 36.754884] do_vmi_munmap+0x1f1/0x2b0 [ 36.755220] __vm_munmap+0x138/0x3a0 [ 36.755542] __x64_sys_munmap+0x59/0x80 [ 36.755886] do_syscall_64+0x3f/0x90 [ 36.756216] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 36.756661] [ 36.756849] The buggy address belongs to the object at ffff888019a910e8 [ 36.756849] which belongs to the cache vm_area_struct of size 168 [ 36.757864] The buggy address is located 88 bytes inside of [ 36.757864] freed 168-byte region [ffff888019a910e8, ffff888019a91190) [ 36.758848] [ 36.758999] The buggy address belongs to the physical page: [ 36.759461] page:00000000b19e1b5c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x19a91 [ 36.760209] memcg:ffff88800ed4ca01 [ 36.760509] flags: 0x100000000000200(slab|node=0|zone=1) [ 36.760983] page_type: 0xffffffff() [ 36.761300] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 36.761941] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ed4ca01 [ 36.762571] page dumped because: kasan: bad access detected [ 36.763023] [ 36.763172] Memory state around the buggy address: [ 36.763573] ffff888019a91000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 36.764169] ffff888019a91080: 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb [ 36.764759] >ffff888019a91100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 36.765397] ^ [ 36.765836] ffff888019a91180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 36.766430] ffff888019a91200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 36.767030] ================================================================== [ 36.767844] Disabling lock debugging due to kernel taint [ 38.092806] BUG: Bad rss-counter state mm:00000000807c43ce type:MM_FILEPAGES val:33 [ 38.093947] BUG: Bad rss-counter state mm:00000000807c43ce type:MM_ANONPAGES val:22 [ 38.453490] BUG: Bad rss-counter state mm:00000000ebdad2fc type:MM_FILEPAGES val:33 [ 38.454148] BUG: Bad rss-counter state mm:00000000ebdad2fc type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:4962' (ECDSA) to the list of known hosts. 2023/06/20 09:01:37 fuzzer started 2023/06/20 09:01:38 dialing manager at localhost:44161 2023/06/20 09:01:38 checking machine... 2023/06/20 09:01:38 checking revisions... [ 38.996613] kmemleak: Automatic memory scanning thread ended 2023/06/20 09:01:38 testing simple program... [ 39.036683] cgroup: Unknown subsys name 'net' [ 39.073114] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 09:01:32 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff88806ce09b30 RCX=0000000000000000 RDX=0000000000000070 RSI=0000000000000000 RDI=ffff88806ce09a98 RBP=ffff8880101cb680 RSP=ffff88806ce09a40 R8 =0000000000000130 R9 =0000000000000000 R10=ffff88806ce09a98 R11=00000000000b6996 R12=0000000000000000 R13=ffff88806ce09ac0 R14=ffff8880101cb680 R15=ffff88806ce09a98 RIP=ffffffff8450d403 RFL=00000247 [---Z-PC] 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 00007f4cc219c900 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=00007f4cc15f21d0 CR3=000000000ee78000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=689bb0481e25869f00000000000ae988 XMM05=4e766533aa8e969a0000000000134770 XMM06=4fda316b135da52b0000000000133560 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=ffff88801436e5e0 RCX=ffffffff812e00e5 RDX=1ffff11001dc4aa0 RSI=ffffffff87b86f80 RDI=ffff88800ee25528 RBP=ffff88800ee254c0 RSP=ffff888008e57cc8 R8 =0000000000000001 R9 =ffffed10011caf8b R10=0000000000000003 R11=0000000000000128 R12=0000000000000283 R13=ffff88800ee25528 R14=ffffffff813782a8 R15=ffffffff87b86f80 RIP=ffffffff844cc1ca RFL=00000046 [---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 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=00007ffdce9c9000 CR3=000000000e23a000 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