syzkaller login: [ 30.549335] BUG: Bad rss-counter state mm:00000000aa06e8e4 type:MM_FILEPAGES val:33 [ 30.550370] BUG: Bad rss-counter state mm:00000000aa06e8e4 type:MM_ANONPAGES val:22 [ 30.710576] ================================================================== [ 30.711513] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.712488] Read of size 8 at addr ffff88800fb583f8 by task sshd/220 [ 30.713274] [ 30.713501] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.714493] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.715482] Call Trace: [ 30.715824] [ 30.716129] dump_stack_lvl+0x91/0xf0 [ 30.716655] print_report+0xcc/0x620 [ 30.717179] ? __virt_addr_valid+0x102/0x340 [ 30.717765] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.718442] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.719094] kasan_report+0xbe/0xf0 [ 30.719609] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.720241] vma_interval_tree_remove+0xc75/0xec0 [ 30.720859] vma_prepare+0xc54/0x11a0 [ 30.721369] __split_vma+0x5af/0x950 [ 30.721859] ? __pfx___split_vma+0x10/0x10 [ 30.722422] ? find_held_lock+0x2c/0x110 [ 30.722951] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.723533] ? lock_is_held_type+0x9f/0x120 [ 30.724093] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.724702] ? mtree_range_walk+0x632/0x900 [ 30.725264] ? mas_walk+0x5c7/0x7c0 [ 30.725750] do_vmi_munmap+0x1f1/0x2b0 [ 30.726249] mmap_region+0x1f9/0x2660 [ 30.726736] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.727251] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.728011] ? __pfx_lock_acquire+0x10/0x10 [ 30.728576] ? __pfx_mmap_region+0x10/0x10 [ 30.729140] ? security_mmap_addr+0x7d/0xa0 [ 30.729693] ? get_unmapped_area+0x1f5/0x3f0 [ 30.730253] do_mmap+0x854/0xf00 [ 30.730702] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.731208] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.731774] ksys_mmap_pgoff+0x3af/0x500 [ 30.732295] do_syscall_64+0x3f/0x90 [ 30.732784] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.733441] RIP: 0033:0x7fd558eded82 [ 30.733910] 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 [ 30.736146] RSP: 002b:00007ffee8916bd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.737083] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fd558eded82 [ 30.738014] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fd558318000 [ 30.738881] RBP: 00007fd558318000 R08: 0000000000000009 R09: 0000000000001000 [ 30.739763] R10: 0000000000000812 R11: 0000000000000206 R12: 000055a4fafa3ec0 [ 30.740623] R13: 00007ffee8916bf0 R14: 00007ffee8916c20 R15: 00007ffee8916f80 [ 30.741506] [ 30.741812] [ 30.742043] Allocated by task 213: [ 30.742485] kasan_save_stack+0x22/0x50 [ 30.742992] kasan_set_track+0x25/0x30 [ 30.743507] __kasan_slab_alloc+0x59/0x70 [ 30.744056] kmem_cache_alloc+0x16b/0x370 [ 30.744584] vm_area_dup+0x20/0x160 [ 30.745062] __split_vma+0x170/0x950 [ 30.745539] split_vma+0xc6/0x110 [ 30.746010] mprotect_fixup+0x8d2/0xb30 [ 30.746525] do_mprotect_pkey+0x87e/0xd40 [ 30.747059] __x64_sys_mprotect+0x78/0xc0 [ 30.747585] do_syscall_64+0x3f/0x90 [ 30.748099] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.748765] [ 30.748992] Freed by task 213: [ 30.749407] kasan_save_stack+0x22/0x50 [ 30.749929] kasan_set_track+0x25/0x30 [ 30.750434] kasan_save_free_info+0x2b/0x50 [ 30.750983] __kasan_slab_free+0x10a/0x190 [ 30.751528] kmem_cache_free+0x10d/0x4d0 [ 30.752058] rcu_core+0x8c8/0x2860 [ 30.752516] __do_softirq+0x1b7/0x7d4 [ 30.752999] [ 30.753220] Last potentially related work creation: [ 30.753827] kasan_save_stack+0x22/0x50 [ 30.754356] __kasan_record_aux_stack+0x8e/0xa0 [ 30.754951] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.755587] remove_vma+0x139/0x170 [ 30.756052] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.756646] do_vmi_munmap+0x1f1/0x2b0 [ 30.757157] __vm_munmap+0x138/0x3a0 [ 30.757640] __x64_sys_munmap+0x59/0x80 [ 30.758158] do_syscall_64+0x3f/0x90 [ 30.758653] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.759312] [ 30.759532] The buggy address belongs to the object at ffff88800fb583a0 [ 30.759532] which belongs to the cache vm_area_struct of size 168 [ 30.761073] The buggy address is located 88 bytes inside of [ 30.761073] freed 168-byte region [ffff88800fb583a0, ffff88800fb58448) [ 30.762525] [ 30.762747] The buggy address belongs to the physical page: [ 30.763431] page:00000000c343717d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xfb58 [ 30.764538] memcg:ffff88800ee6a101 [ 30.764973] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.765633] page_type: 0xffffffff() [ 30.766111] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.767042] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ee6a101 [ 30.767956] page dumped because: kasan: bad access detected [ 30.768636] [ 30.768855] Memory state around the buggy address: [ 30.769454] ffff88800fb58280: fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 [ 30.770329] ffff88800fb58300: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 30.771204] >ffff88800fb58380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 30.772083] ^ [ 30.772948] ffff88800fb58400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 30.773816] ffff88800fb58480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.774689] ================================================================== [ 30.775813] Disabling lock debugging due to kernel taint [ 32.889034] BUG: Bad rss-counter state mm:00000000c1e57621 type:MM_FILEPAGES val:33 [ 32.889638] BUG: Bad rss-counter state mm:00000000c1e57621 type:MM_ANONPAGES val:22 [ 33.343948] BUG: Bad rss-counter state mm:00000000c2869fb5 type:MM_FILEPAGES val:33 [ 33.345230] BUG: Bad rss-counter state mm:00000000c2869fb5 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:47495' (ECDSA) to the list of known hosts. 2023/06/20 22:16:01 fuzzer started 2023/06/20 22:16:01 dialing manager at localhost:36067 2023/06/20 22:16:01 checking machine... 2023/06/20 22:16:01 checking revisions... [ 33.992666] kmemleak: Automatic memory scanning thread ended 2023/06/20 22:16:01 testing simple program... [ 34.042788] cgroup: Unknown subsys name 'net' [ 34.089928] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 22:16:01 Registers: info registers vcpu 0 RAX=1ffffffff0bbfbba RBX=ffffffff85dfddd0 RCX=ffffffff8180b005 RDX=0000000000000000 RSI=ffffffff86138b1a RDI=ffffffff85dfddd0 RBP=ffffffff85dfddd0 RSP=ffff88800c777750 R8 =ffffffff86138b1a R9 =ffff88800c777848 R10=0000000000038001 R11=0000000000020d03 R12=ffffffff85dfddd0 R13=ffffffff85dfddd0 R14=ffffffff85dfddd0 R15=dffffc0000000000 RIP=ffffffff8112fc7f 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 00007f577338c900 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=00007f5773941650 CR3=0000000019a90000 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=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=1ffff11001aa7743 RBX=ffff88800d53b9e8 RCX=ffffffff812e0135 RDX=0000000000000000 RSI=0000000000000000 RDI=ffff88800d53ba18 RBP=ffff88800d8f5b80 RSP=ffff88806cf09db8 R8 =0000000000000001 R9 =ffffed100d9e13ab R10=0000000000000003 R11=0000000000000000 R12=dffffc0000000000 R13=ffff88800d912f00 R14=ffffffff8186b835 R15=ffff888009496000 RIP=ffffffff818464e2 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=00007ffff46053e8 CR3=0000000005482000 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=00007fa2c42db51000005580802a1790 XMM02=6f6974707972636e6561737268746977 XMM03=00000000000000000000000000777074 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffff00ffffff00ffffff00ff XMM08=00002000000000202020002020200000 XMM09=ffffffffffff00ffffff00ffffff00ff XMM10=00002000000000202020002020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000