syzkaller login: [ 39.124272] BUG: Bad rss-counter state mm:00000000cee2fc88 type:MM_FILEPAGES val:33 [ 39.125510] BUG: Bad rss-counter state mm:00000000cee2fc88 type:MM_ANONPAGES val:22 [ 39.162439] ================================================================== [ 39.163581] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 39.164546] Read of size 8 at addr ffff888018c80058 by task sshd/220 [ 39.165495] [ 39.165718] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 39.166590] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 39.167630] Call Trace: [ 39.167957] [ 39.168249] dump_stack_lvl+0x91/0xf0 [ 39.168752] print_report+0xcc/0x620 [ 39.169247] ? __virt_addr_valid+0x102/0x340 [ 39.169810] ? vma_interval_tree_remove+0xc75/0xec0 [ 39.170435] ? vma_interval_tree_remove+0xc75/0xec0 [ 39.171064] kasan_report+0xbe/0xf0 [ 39.171560] ? vma_interval_tree_remove+0xc75/0xec0 [ 39.172191] vma_interval_tree_remove+0xc75/0xec0 [ 39.172801] vma_prepare+0xc54/0x11a0 [ 39.173284] __split_vma+0x5af/0x950 [ 39.173761] ? __pfx___split_vma+0x10/0x10 [ 39.174297] ? find_held_lock+0x2c/0x110 [ 39.174821] do_vmi_align_munmap+0x2ba/0x11f0 [ 39.175399] ? lock_is_held_type+0x9f/0x120 [ 39.175943] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 39.176559] ? mtree_range_walk+0x632/0x900 [ 39.177118] ? mas_walk+0x5c7/0x7c0 [ 39.177600] do_vmi_munmap+0x1f1/0x2b0 [ 39.178110] mmap_region+0x1f9/0x2660 [ 39.178602] ? vm_mmap_pgoff+0x15c/0x3a0 [ 39.179114] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 39.179862] ? __pfx_lock_acquire+0x10/0x10 [ 39.180400] ? __pfx_mmap_region+0x10/0x10 [ 39.180966] ? security_mmap_addr+0x7d/0xa0 [ 39.181524] ? get_unmapped_area+0x1f5/0x3f0 [ 39.182104] do_mmap+0x854/0xf00 [ 39.182569] vm_mmap_pgoff+0x1a6/0x3a0 [ 39.183093] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 39.183703] ksys_mmap_pgoff+0x3af/0x500 [ 39.184243] do_syscall_64+0x3f/0x90 [ 39.184758] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.185443] RIP: 0033:0x7f70f267cd82 [ 39.185922] 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 [ 39.188221] RSP: 002b:00007fff5615f0a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 39.189396] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f70f267cd82 [ 39.190299] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f70f1ab6000 [ 39.191212] RBP: 00007f70f1ab6000 R08: 0000000000000009 R09: 0000000000001000 [ 39.192122] R10: 0000000000000812 R11: 0000000000000206 R12: 000055b81b6f8b20 [ 39.193019] R13: 00007fff5615f0c0 R14: 00007fff5615f0f0 R15: 00007fff5615f450 [ 39.193943] [ 39.194249] [ 39.194472] Allocated by task 213: [ 39.194930] kasan_save_stack+0x22/0x50 [ 39.195469] kasan_set_track+0x25/0x30 [ 39.195989] __kasan_slab_alloc+0x59/0x70 [ 39.196544] kmem_cache_alloc+0x16b/0x370 [ 39.197094] vm_area_dup+0x20/0x160 [ 39.197572] __split_vma+0x170/0x950 [ 39.198063] split_vma+0xc6/0x110 [ 39.198523] mprotect_fixup+0x8d2/0xb30 [ 39.199062] do_mprotect_pkey+0x87e/0xd40 [ 39.199643] __x64_sys_mprotect+0x78/0xc0 [ 39.200200] do_syscall_64+0x3f/0x90 [ 39.200704] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.201396] [ 39.201620] Freed by task 213: [ 39.202032] kasan_save_stack+0x22/0x50 [ 39.202570] kasan_set_track+0x25/0x30 [ 39.203095] kasan_save_free_info+0x2b/0x50 [ 39.203666] __kasan_slab_free+0x10a/0x190 [ 39.204246] kmem_cache_free+0x10d/0x4d0 [ 39.204786] rcu_core+0x8c8/0x2860 [ 39.205260] __do_softirq+0x1b7/0x7d4 [ 39.205767] [ 39.205995] Last potentially related work creation: [ 39.206608] kasan_save_stack+0x22/0x50 [ 39.207164] __kasan_record_aux_stack+0x8e/0xa0 [ 39.207766] __call_rcu_common.constprop.0+0x6a/0xb90 [ 39.208461] remove_vma+0x139/0x170 [ 39.208937] do_vmi_align_munmap+0xd4a/0x11f0 [ 39.209522] do_vmi_munmap+0x1f1/0x2b0 [ 39.210045] __vm_munmap+0x138/0x3a0 [ 39.210545] __x64_sys_munmap+0x59/0x80 [ 39.211074] do_syscall_64+0x3f/0x90 [ 39.211581] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.212255] [ 39.212486] The buggy address belongs to the object at ffff888018c80000 [ 39.212486] which belongs to the cache vm_area_struct of size 168 [ 39.214050] The buggy address is located 88 bytes inside of [ 39.214050] freed 168-byte region [ffff888018c80000, ffff888018c800a8) [ 39.215566] [ 39.215795] The buggy address belongs to the physical page: [ 39.216494] page:0000000047a86817 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x18c80 [ 39.217655] memcg:ffff88800ce7f901 [ 39.218101] flags: 0x100000000000200(slab|node=0|zone=1) [ 39.218787] page_type: 0xffffffff() [ 39.219275] raw: 0100000000000200 ffff8880087a0c80 ffffea000063e6c0 dead000000000006 [ 39.220258] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ce7f901 [ 39.221224] page dumped because: kasan: bad access detected [ 39.221934] [ 39.222161] Memory state around the buggy address: [ 39.222777] ffff888018c7ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 39.223700] ffff888018c7ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 39.224611] >ffff888018c80000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 39.225510] ^ [ 39.226269] ffff888018c80080: fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 00 [ 39.227194] ffff888018c80100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 39.228129] ================================================================== [ 39.229116] Disabling lock debugging due to kernel taint [ 41.213994] BUG: Bad rss-counter state mm:00000000bfae9694 type:MM_FILEPAGES val:33 [ 41.215364] BUG: Bad rss-counter state mm:00000000bfae9694 type:MM_ANONPAGES val:22 [ 41.693877] BUG: Bad rss-counter state mm:00000000aa79a398 type:MM_FILEPAGES val:33 [ 41.695198] BUG: Bad rss-counter state mm:00000000aa79a398 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:44969' (ECDSA) to the list of known hosts. 2023/06/21 00:57:35 fuzzer started 2023/06/21 00:57:35 dialing manager at localhost:36067 2023/06/21 00:57:35 checking machine... 2023/06/21 00:57:35 checking revisions... [ 42.422088] kmemleak: Automatic memory scanning thread ended 2023/06/21 00:57:35 testing simple program... [ 42.474999] cgroup: Unknown subsys name 'net' [ 42.513827] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 00:57:34 Registers: info registers vcpu 0 RAX=ffffffff8450ccc9 RBX=ffffffff8604ebe8 RCX=ffffffff8450cc7e RDX=0000000000000000 RSI=ffffffff864b2008 RDI=ffffffff8604ebc4 RBP=ffffffff8604ebe0 RSP=ffff888014597230 R8 =ffffffff864b2008 R9 =ffff888014597328 R10=0000000000038001 R11=00000000000b5080 R12=ffffffff8604ebe4 R13=ffffffff8604ebc4 R14=ffffffff8604ebdc R15=dffffc0000000000 RIP=ffffffff8112fca2 RFL=00000202 [-------] 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 00007fe0725e6700 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=00007fbf96ffe650 CR3=000000000f11c000 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=656e6e6f637369642064657669656365 XMM02=63736964203a31313a38343535342074 XMM03=66207463656e6e6f6373696420646576 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320383435 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000001 RBX=ffffffff85da9418 RCX=ffffffff81288ac4 RDX=0000000000000003 RSI=ffffffff860b9c62 RDI=ffffffff85da9400 RBP=ffffffff85da9414 RSP=ffff88806cf099c0 R8 =ffffffff860b9c62 R9 =ffff88806cf09ab8 R10=0000000000038001 R11=000000000000ba8f R12=ffffffff85da9420 R13=ffffffff85da9400 R14=ffffffff85da9410 R15=dffffc0000000000 RIP=ffffffff8112fc73 RFL=00000213 [----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=00007f19ba0f2750 CR3=000000000ed6e000 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=00000000000000000000000000000000 XMM01=e4ade8f4561d1183434630701a08267d XMM02=000000000011b220ec2efd57dc4c00df XMM03=0000000000121f704388144a0fce55b0 XMM04=b5b5e27bf593dbe500000000000ae988 XMM05=19e9129bd510f2350000000000131b20 XMM06=13d97a611f03a4350000000000130cf8 XMM07=e042d86d42eb936e0000000000122248 XMM08=4388144a0fce55b0000000000011b280 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000