syzkaller login: [ 30.710511] BUG: Bad rss-counter state mm:000000002ecc0bc8 type:MM_FILEPAGES val:33 [ 30.711585] BUG: Bad rss-counter state mm:000000002ecc0bc8 type:MM_ANONPAGES val:22 [ 30.760771] ================================================================== [ 30.761742] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.762677] Read of size 8 at addr ffff88801a2b53f8 by task sshd/220 [ 30.763430] [ 30.763697] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.764597] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.765615] Call Trace: [ 30.765974] [ 30.766259] dump_stack_lvl+0x91/0xf0 [ 30.766779] print_report+0xcc/0x620 [ 30.767297] ? __virt_addr_valid+0x102/0x340 [ 30.767896] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.768568] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.769206] kasan_report+0xbe/0xf0 [ 30.769721] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.770388] vma_interval_tree_remove+0xc75/0xec0 [ 30.771073] vma_prepare+0xc54/0x11a0 [ 30.771591] __split_vma+0x5af/0x950 [ 30.772086] ? __pfx___split_vma+0x10/0x10 [ 30.772639] ? find_held_lock+0x2c/0x110 [ 30.773191] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.773783] ? lock_is_held_type+0x9f/0x120 [ 30.774329] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.774987] ? mtree_range_walk+0x632/0x900 [ 30.775592] ? mas_walk+0x5c7/0x7c0 [ 30.776082] do_vmi_munmap+0x1f1/0x2b0 [ 30.776585] mmap_region+0x1f9/0x2660 [ 30.777081] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.777608] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.778328] ? __pfx_lock_acquire+0x10/0x10 [ 30.778875] ? __pfx_mmap_region+0x10/0x10 [ 30.779424] ? security_mmap_addr+0x7d/0xa0 [ 30.780039] ? get_unmapped_area+0x1f5/0x3f0 [ 30.780674] do_mmap+0x854/0xf00 [ 30.781127] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.781649] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.782237] ksys_mmap_pgoff+0x3af/0x500 [ 30.782756] do_syscall_64+0x3f/0x90 [ 30.783271] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.783955] RIP: 0033:0x7f740c01dd82 [ 30.784401] 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 [ 30.786822] RSP: 002b:00007ffcbc25ccb8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.787742] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f740c01dd82 [ 30.788591] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f740b457000 [ 30.789415] RBP: 00007f740b457000 R08: 0000000000000009 R09: 0000000000001000 [ 30.790297] R10: 0000000000000812 R11: 0000000000000206 R12: 000055e12592aec0 [ 30.791151] R13: 00007ffcbc25ccd0 R14: 00007ffcbc25cd00 R15: 00007ffcbc25d060 [ 30.792049] [ 30.792334] [ 30.792581] Allocated by task 213: [ 30.793040] kasan_save_stack+0x22/0x50 [ 30.793573] kasan_set_track+0x25/0x30 [ 30.794109] __kasan_slab_alloc+0x59/0x70 [ 30.794651] kmem_cache_alloc+0x16b/0x370 [ 30.795214] vm_area_dup+0x20/0x160 [ 30.795687] __split_vma+0x170/0x950 [ 30.796159] split_vma+0xc6/0x110 [ 30.796630] mprotect_fixup+0x8d2/0xb30 [ 30.797159] do_mprotect_pkey+0x87e/0xd40 [ 30.797712] __x64_sys_mprotect+0x78/0xc0 [ 30.798262] do_syscall_64+0x3f/0x90 [ 30.798760] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.799422] [ 30.799691] Freed by task 213: [ 30.800132] kasan_save_stack+0x22/0x50 [ 30.800643] kasan_set_track+0x25/0x30 [ 30.801165] kasan_save_free_info+0x2b/0x50 [ 30.801738] __kasan_slab_free+0x10a/0x190 [ 30.802310] kmem_cache_free+0x10d/0x4d0 [ 30.802846] rcu_core+0x8c8/0x2860 [ 30.803316] __do_softirq+0x1b7/0x7d4 [ 30.803852] [ 30.804105] Last potentially related work creation: [ 30.804715] kasan_save_stack+0x22/0x50 [ 30.805265] __kasan_record_aux_stack+0x8e/0xa0 [ 30.805877] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.806584] remove_vma+0x139/0x170 [ 30.807115] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.807711] do_vmi_munmap+0x1f1/0x2b0 [ 30.808227] __vm_munmap+0x138/0x3a0 [ 30.808727] __x64_sys_munmap+0x59/0x80 [ 30.809252] do_syscall_64+0x3f/0x90 [ 30.809782] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.810482] [ 30.810724] The buggy address belongs to the object at ffff88801a2b53a0 [ 30.810724] which belongs to the cache vm_area_struct of size 168 [ 30.812288] The buggy address is located 88 bytes inside of [ 30.812288] freed 168-byte region [ffff88801a2b53a0, ffff88801a2b5448) [ 30.813800] [ 30.814055] The buggy address belongs to the physical page: [ 30.814754] page:00000000fbb9248b refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a2b5 [ 30.815950] memcg:ffff88801a1ca801 [ 30.816378] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.817093] page_type: 0xffffffff() [ 30.817570] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.818553] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a1ca801 [ 30.819493] page dumped because: kasan: bad access detected [ 30.820221] [ 30.820438] Memory state around the buggy address: [ 30.821081] ffff88801a2b5280: fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 [ 30.821997] ffff88801a2b5300: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 30.822996] >ffff88801a2b5380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 30.824110] ^ [ 30.825135] ffff88801a2b5400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 30.826153] ffff88801a2b5480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.827122] ================================================================== [ 30.828586] Disabling lock debugging due to kernel taint [ 33.644984] BUG: Bad rss-counter state mm:00000000512a41ce type:MM_FILEPAGES val:33 [ 33.646672] BUG: Bad rss-counter state mm:00000000512a41ce type:MM_ANONPAGES val:22 [ 34.213721] BUG: Bad rss-counter state mm:00000000705049bf type:MM_FILEPAGES val:33 [ 34.214949] BUG: Bad rss-counter state mm:00000000705049bf type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:4824' (ECDSA) to the list of known hosts. 2023/06/20 15:56:46 fuzzer started 2023/06/20 15:56:46 dialing manager at localhost:36067 2023/06/20 15:56:46 checking machine... 2023/06/20 15:56:46 checking revisions... [ 34.872332] kmemleak: Automatic memory scanning thread ended 2023/06/20 15:56:46 testing simple program... [ 34.933787] cgroup: Unknown subsys name 'net' [ 34.999189] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 15:56:46 Registers: info registers vcpu 0 RAX=1ffff11001945239 RBX=ffff88800ca29198 RCX=ffffffff812e0135 RDX=0000000000000000 RSI=0000000000000000 RDI=ffff88800ca291c8 RBP=ffff888018deaf40 RSP=ffff88806ce09db8 R8 =0000000000000001 R9 =ffffed100d9c13ab R10=0000000000000003 R11=00000000000b6a61 R12=dffffc0000000000 R13=ffff888018de9500 R14=ffffffff818d9c06 R15=ffff88800d9e8580 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 00007face0177900 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=00007ffc36660000 CR3=000000000f1da000 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=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 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c04400 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 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=00007fc4368d49a0 CR3=000000000e9ea000 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=2036343a36353a3531203032206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732035343a36353a3531203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000