syzkaller login: [ 30.668175] BUG: Bad rss-counter state mm:000000006e0a8244 type:MM_FILEPAGES val:33 [ 30.668986] BUG: Bad rss-counter state mm:000000006e0a8244 type:MM_ANONPAGES val:22 [ 30.828816] ================================================================== [ 30.829940] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.831071] Read of size 8 at addr ffff88800ed3a140 by task sshd/220 [ 30.831997] [ 30.832219] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.833087] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.834086] Call Trace: [ 30.834417] [ 30.834703] dump_stack_lvl+0x91/0xf0 [ 30.835211] print_report+0xcc/0x620 [ 30.835708] ? __virt_addr_valid+0x102/0x340 [ 30.836271] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.836889] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.837498] kasan_report+0xbe/0xf0 [ 30.837970] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.838593] vma_interval_tree_remove+0xc75/0xec0 [ 30.839213] vma_prepare+0xc54/0x11a0 [ 30.839693] __split_vma+0x5af/0x950 [ 30.840167] ? __pfx___split_vma+0x10/0x10 [ 30.840704] ? find_held_lock+0x2c/0x110 [ 30.841228] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.841791] ? lock_is_held_type+0x9f/0x120 [ 30.842335] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.842960] ? mtree_range_walk+0x632/0x900 [ 30.843514] ? mas_walk+0x5c7/0x7c0 [ 30.843989] do_vmi_munmap+0x1f1/0x2b0 [ 30.844487] mmap_region+0x1f9/0x2660 [ 30.844967] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.845478] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.846187] ? __pfx_lock_acquire+0x10/0x10 [ 30.846730] ? __pfx_mmap_region+0x10/0x10 [ 30.847290] ? security_mmap_addr+0x7d/0xa0 [ 30.847842] ? get_unmapped_area+0x1f5/0x3f0 [ 30.848388] do_mmap+0x854/0xf00 [ 30.848830] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.849319] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.849877] ksys_mmap_pgoff+0x3af/0x500 [ 30.850384] do_syscall_64+0x3f/0x90 [ 30.850881] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.851526] RIP: 0033:0x7f82f6f14d82 [ 30.851984] 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 [ 30.854100] RSP: 002b:00007ffe4a84bd78 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.855047] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f82f6f14d82 [ 30.855901] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f82f634e000 [ 30.856753] RBP: 00007f82f634e000 R08: 0000000000000009 R09: 0000000000001000 [ 30.857606] R10: 0000000000000812 R11: 0000000000000206 R12: 000055bc821b9b20 [ 30.858458] R13: 00007ffe4a84bd90 R14: 00007ffe4a84bdc0 R15: 00007ffe4a84c120 [ 30.859325] [ 30.859617] [ 30.859836] Allocated by task 213: [ 30.860269] kasan_save_stack+0x22/0x50 [ 30.860780] kasan_set_track+0x25/0x30 [ 30.861273] __kasan_slab_alloc+0x59/0x70 [ 30.861802] kmem_cache_alloc+0x16b/0x370 [ 30.862314] vm_area_dup+0x20/0x160 [ 30.862779] __split_vma+0x170/0x950 [ 30.863251] split_vma+0xc6/0x110 [ 30.863707] mprotect_fixup+0x8d2/0xb30 [ 30.864222] do_mprotect_pkey+0x87e/0xd40 [ 30.864762] __x64_sys_mprotect+0x78/0xc0 [ 30.865309] do_syscall_64+0x3f/0x90 [ 30.865801] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.866471] [ 30.866691] Freed by task 201: [ 30.867126] kasan_save_stack+0x22/0x50 [ 30.867641] kasan_set_track+0x25/0x30 [ 30.868155] kasan_save_free_info+0x2b/0x50 [ 30.868708] __kasan_slab_free+0x10a/0x190 [ 30.869260] kmem_cache_free+0x10d/0x4d0 [ 30.869793] rcu_core+0x8c8/0x2860 [ 30.870256] __do_softirq+0x1b7/0x7d4 [ 30.870765] [ 30.870989] Last potentially related work creation: [ 30.871600] kasan_save_stack+0x22/0x50 [ 30.872124] __kasan_record_aux_stack+0x8e/0xa0 [ 30.872824] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.873494] remove_vma+0x139/0x170 [ 30.873964] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.874545] do_vmi_munmap+0x1f1/0x2b0 [ 30.875070] __vm_munmap+0x138/0x3a0 [ 30.875554] __x64_sys_munmap+0x59/0x80 [ 30.876066] do_syscall_64+0x3f/0x90 [ 30.876567] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.877232] [ 30.877456] The buggy address belongs to the object at ffff88800ed3a0e8 [ 30.877456] which belongs to the cache vm_area_struct of size 168 [ 30.878997] The buggy address is located 88 bytes inside of [ 30.878997] freed 168-byte region [ffff88800ed3a0e8, ffff88800ed3a190) [ 30.880459] [ 30.880681] The buggy address belongs to the physical page: [ 30.881379] page:00000000fa4b348e refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xed3a [ 30.882526] memcg:ffff88800c629701 [ 30.882973] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 30.883708] page_type: 0xffffffff() [ 30.884178] raw: 0100000000000200 ffff8880087a0c80 ffffea0000256540 dead000000000005 [ 30.885148] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800c629701 [ 30.886091] page dumped because: kasan: bad access detected [ 30.886802] [ 30.887024] Memory state around the buggy address: [ 30.887628] ffff88800ed3a000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.888522] ffff88800ed3a080: 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb [ 30.889421] >ffff88800ed3a100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.890315] ^ [ 30.890990] ffff88800ed3a180: fb fb fc fc fc fc fc fc fc fc 00 00 00 00 00 00 [ 30.891877] ffff88800ed3a200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 30.892778] ================================================================== [ 30.893773] Disabling lock debugging due to kernel taint [ 33.230505] BUG: Bad rss-counter state mm:00000000e5c3d8b6 type:MM_FILEPAGES val:33 [ 33.231654] BUG: Bad rss-counter state mm:00000000e5c3d8b6 type:MM_ANONPAGES val:22 [ 33.796643] BUG: Bad rss-counter state mm:000000007d302fe2 type:MM_FILEPAGES val:33 [ 33.797843] BUG: Bad rss-counter state mm:000000007d302fe2 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:28194' (ECDSA) to the list of known hosts. 2023/06/20 20:36:20 fuzzer started 2023/06/20 20:36:20 dialing manager at localhost:36067 2023/06/20 20:36:20 checking machine... 2023/06/20 20:36:20 checking revisions... [ 34.440969] kmemleak: Automatic memory scanning thread ended 2023/06/20 20:36:20 testing simple program... [ 34.488301] cgroup: Unknown subsys name 'net' [ 34.527707] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 20:36:20 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffffea0000564480 RCX=0000000000000000 RDX=ffffea0000564401 RSI=ffffffff811431c2 RDI=0000777f80000000 RBP=0000000000000001 RSP=ffff888019f27bf0 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000008 R11=0000000000000001 R12=ffff8880159123b8 R13=0000000000000001 R14=1ffff110033e4f87 R15=dffffc0000000000 RIP=ffffffff8180c61b RFL=00000082 [--S----] 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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f540c2a4700 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=00007faabd582000 CR3=000000000e644000 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=00000000000000003043545500435455 XMM02=2079746972756365732078756e694c45 XMM03=2064656c696146203a656d616e796278 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320383137 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=0000000000038000 RBX=0000000000000001 RCX=ffffffff810bd06c RDX=dffffc0000000000 RSI=0000000000000bd0 RDI=ffff88806cf09a70 RBP=ffff88806cf09ac8 RSP=ffff88806cf09a00 R8 =0000000000000001 R9 =ffff88806cf09ab0 R10=0000000000038001 R11=0000000000006054 R12=ffff88806cf09ad0 R13=ffff88806cf09ab8 R14=ffff88806cf09ab1 R15=ffff88806cf09a70 RIP=ffffffff81130754 RFL=00000283 [--S---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 00007f9b2607a900 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=00007fff47779000 CR3=000000000e566000 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=563412feff00545000000000000080fe 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