syzkaller login: [ 30.798099] BUG: Bad rss-counter state mm:0000000060e29bf9 type:MM_FILEPAGES val:33 [ 30.799109] BUG: Bad rss-counter state mm:0000000060e29bf9 type:MM_ANONPAGES val:22 [ 30.961169] ================================================================== [ 30.962239] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.963346] Read of size 8 at addr ffff88800e00e140 by task sshd/220 [ 30.964463] [ 30.964724] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.965614] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.966623] Call Trace: [ 30.966941] [ 30.967222] dump_stack_lvl+0x91/0xf0 [ 30.967729] print_report+0xcc/0x620 [ 30.968211] ? __virt_addr_valid+0x102/0x340 [ 30.968783] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.969401] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.970017] kasan_report+0xbe/0xf0 [ 30.970489] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.971112] vma_interval_tree_remove+0xc75/0xec0 [ 30.971719] vma_prepare+0xc54/0x11a0 [ 30.972196] __split_vma+0x5af/0x950 [ 30.972697] ? __pfx___split_vma+0x10/0x10 [ 30.973235] ? find_held_lock+0x2c/0x110 [ 30.973756] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.974324] ? lock_is_held_type+0x9f/0x120 [ 30.974867] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.975477] ? mtree_range_walk+0x632/0x900 [ 30.976031] ? mas_walk+0x5c7/0x7c0 [ 30.976518] do_vmi_munmap+0x1f1/0x2b0 [ 30.977011] mmap_region+0x1f9/0x2660 [ 30.977490] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.977993] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.978705] ? __pfx_lock_acquire+0x10/0x10 [ 30.979232] ? __pfx_mmap_region+0x10/0x10 [ 30.979761] ? security_mmap_addr+0x7d/0xa0 [ 30.980284] ? get_unmapped_area+0x1f5/0x3f0 [ 30.980847] do_mmap+0x854/0xf00 [ 30.981282] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.981773] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.982327] ksys_mmap_pgoff+0x3af/0x500 [ 30.982829] do_syscall_64+0x3f/0x90 [ 30.983303] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.983946] RIP: 0033:0x7f42f698bd82 [ 30.984404] 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 [ 30.986540] RSP: 002b:00007ffe84ec6868 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.987432] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f42f698bd82 [ 30.988279] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f42f5dc5000 [ 30.989125] RBP: 00007f42f5dc5000 R08: 0000000000000009 R09: 0000000000001000 [ 30.989963] R10: 0000000000000812 R11: 0000000000000206 R12: 000055b793064ec0 [ 30.990800] R13: 00007ffe84ec6880 R14: 00007ffe84ec68b0 R15: 00007ffe84ec6c10 [ 30.991650] [ 30.991940] [ 30.992155] Allocated by task 213: [ 30.992595] kasan_save_stack+0x22/0x50 [ 30.993094] kasan_set_track+0x25/0x30 [ 30.993588] __kasan_slab_alloc+0x59/0x70 [ 30.994106] kmem_cache_alloc+0x16b/0x370 [ 30.994614] vm_area_dup+0x20/0x160 [ 30.995063] __split_vma+0x170/0x950 [ 30.995529] split_vma+0xc6/0x110 [ 30.995964] mprotect_fixup+0x8d2/0xb30 [ 30.996482] do_mprotect_pkey+0x87e/0xd40 [ 30.997003] __x64_sys_mprotect+0x78/0xc0 [ 30.997519] do_syscall_64+0x3f/0x90 [ 30.997989] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.998626] [ 30.998838] Freed by task 213: [ 30.999231] kasan_save_stack+0x22/0x50 [ 30.999730] kasan_set_track+0x25/0x30 [ 31.000223] kasan_save_free_info+0x2b/0x50 [ 31.000758] __kasan_slab_free+0x10a/0x190 [ 31.001289] kmem_cache_free+0x10d/0x4d0 [ 31.001795] rcu_core+0x8c8/0x2860 [ 31.002239] __do_softirq+0x1b7/0x7d4 [ 31.002710] [ 31.002923] Last potentially related work creation: [ 31.003505] kasan_save_stack+0x22/0x50 [ 31.004010] __kasan_record_aux_stack+0x8e/0xa0 [ 31.004599] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.005303] remove_vma+0x139/0x170 [ 31.005753] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.006309] do_vmi_munmap+0x1f1/0x2b0 [ 31.006792] __vm_munmap+0x138/0x3a0 [ 31.007256] __x64_sys_munmap+0x59/0x80 [ 31.007750] do_syscall_64+0x3f/0x90 [ 31.008222] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.008876] [ 31.009090] Second to last potentially related work creation: [ 31.009764] kasan_save_stack+0x22/0x50 [ 31.010268] __kasan_record_aux_stack+0x8e/0xa0 [ 31.010839] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.011477] remove_vma+0x139/0x170 [ 31.011925] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.012494] do_vmi_munmap+0x1f1/0x2b0 [ 31.012977] mmap_region+0x1f9/0x2660 [ 31.013455] do_mmap+0x854/0xf00 [ 31.013882] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.014365] ksys_mmap_pgoff+0x3af/0x500 [ 31.014858] do_syscall_64+0x3f/0x90 [ 31.015331] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.015970] [ 31.016184] The buggy address belongs to the object at ffff88800e00e0e8 [ 31.016184] which belongs to the cache vm_area_struct of size 168 [ 31.017672] The buggy address is located 88 bytes inside of [ 31.017672] freed 168-byte region [ffff88800e00e0e8, ffff88800e00e190) [ 31.019081] [ 31.019295] The buggy address belongs to the physical page: [ 31.019957] page:00000000fbe62e5d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe00e [ 31.021044] memcg:ffff88800ee8e501 [ 31.021471] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 31.022168] page_type: 0xffffffff() [ 31.022616] raw: 0100000000000200 ffff8880087a0c80 ffffea0000380940 dead000000000005 [ 31.023533] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ee8e501 [ 31.024448] page dumped because: kasan: bad access detected [ 31.025110] [ 31.025326] Memory state around the buggy address: [ 31.025903] ffff88800e00e000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.026764] ffff88800e00e080: 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb [ 31.027622] >ffff88800e00e100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.028488] ^ [ 31.029124] ffff88800e00e180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 31.029983] ffff88800e00e200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 31.030839] ================================================================== [ 31.031755] Disabling lock debugging due to kernel taint [ 33.061758] BUG: Bad rss-counter state mm:000000002a7c0b64 type:MM_FILEPAGES val:33 [ 33.063116] BUG: Bad rss-counter state mm:000000002a7c0b64 type:MM_ANONPAGES val:22 [ 33.610273] BUG: Bad rss-counter state mm:00000000ca74e4e8 type:MM_FILEPAGES val:33 [ 33.611416] BUG: Bad rss-counter state mm:00000000ca74e4e8 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:29364' (ECDSA) to the list of known hosts. 2023/06/21 05:33:47 fuzzer started 2023/06/21 05:33:47 dialing manager at localhost:36067 2023/06/21 05:33:47 checking machine... 2023/06/21 05:33:47 checking revisions... [ 34.249745] kmemleak: Automatic memory scanning thread ended 2023/06/21 05:33:47 testing simple program... [ 34.303603] cgroup: Unknown subsys name 'net' [ 34.359224] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 05:33:47 Registers: info registers vcpu 0 RAX=0000000000000020 RBX=0000000000000010 RCX=0000000000000000 RDX=ffff888016a98000 RSI=ffffffff849c05a0 RDI=0000000000000010 RBP=ffffffff849c05a0 RSP=ffff88801cdcfcf8 R8 =0000000000000000 R9 =0000000000000000 R10=0000000000000001 R11=00000000000b6a61 R12=0000000000000010 R13=ffff888019014500 R14=1ffff110039b9fa9 R15=0000000000000000 RIP=ffffffff814c0476 RFL=00000293 [--S-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 00007f6401268900 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=00007fff04be8ff8 CR3=000000001a340000 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=00007f32d68d0000 CR3=00000000139ec000 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=aede2f14522b2ab3b24716d87b244ea6 XMM02=000000000011a0d0eff9b2d0a8fce9cb XMM03=000000000011a1a02c67c8bc2e329bc3 XMM04=0f275ec44163c2ad00000000000ae988 XMM05=19e9129bd510f2350000000000132b40 XMM06=60913c6c66109fd100000000001319a8 XMM07=e042d86d42eb936e0000000000121c30 XMM08=27260501b1a04746000000000011a1a0 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000