syzkaller login: [ 45.843770] BUG: Bad rss-counter state mm:0000000053aeb4ad type:MM_FILEPAGES val:33 [ 45.845058] BUG: Bad rss-counter state mm:0000000053aeb4ad type:MM_ANONPAGES val:22 [ 45.889301] ================================================================== [ 45.890230] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 45.891285] Read of size 8 at addr ffff88800ed69798 by task sshd/219 [ 45.892123] [ 45.892345] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 45.893218] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 45.894226] Call Trace: [ 45.894552] [ 45.894843] dump_stack_lvl+0x91/0xf0 [ 45.895344] print_report+0xcc/0x620 [ 45.895837] ? __virt_addr_valid+0x102/0x340 [ 45.896409] ? vma_interval_tree_remove+0xc75/0xec0 [ 45.897031] ? vma_interval_tree_remove+0xc75/0xec0 [ 45.897653] kasan_report+0xbe/0xf0 [ 45.898144] ? vma_interval_tree_remove+0xc75/0xec0 [ 45.898772] vma_interval_tree_remove+0xc75/0xec0 [ 45.899377] vma_prepare+0xc54/0x11a0 [ 45.899855] __split_vma+0x5af/0x950 [ 45.900329] ? __pfx___split_vma+0x10/0x10 [ 45.900856] ? find_held_lock+0x2c/0x110 [ 45.901377] do_vmi_align_munmap+0x2ba/0x11f0 [ 45.901962] ? lock_is_held_type+0x9f/0x120 [ 45.902499] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 45.903103] ? mtree_range_walk+0x632/0x900 [ 45.903658] ? mas_walk+0x5c7/0x7c0 [ 45.904133] do_vmi_munmap+0x1f1/0x2b0 [ 45.904622] mmap_region+0x1f9/0x2660 [ 45.905106] ? vm_mmap_pgoff+0x15c/0x3a0 [ 45.905626] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 45.906340] ? __pfx_lock_acquire+0x10/0x10 [ 45.906870] ? __pfx_mmap_region+0x10/0x10 [ 45.907403] ? security_mmap_addr+0x7d/0xa0 [ 45.907937] ? get_unmapped_area+0x1f5/0x3f0 [ 45.908493] do_mmap+0x854/0xf00 [ 45.908931] vm_mmap_pgoff+0x1a6/0x3a0 [ 45.909431] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 45.910012] ksys_mmap_pgoff+0x3af/0x500 [ 45.910515] do_syscall_64+0x3f/0x90 [ 45.910988] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 45.911639] RIP: 0033:0x7fe28c30cd82 [ 45.912100] 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 [ 45.914243] RSP: 002b:00007ffe3c658e98 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 45.915161] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe28c30cd82 [ 45.916019] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fe28b746000 [ 45.916868] RBP: 00007fe28b746000 R08: 0000000000000009 R09: 0000000000001000 [ 45.917735] R10: 0000000000000812 R11: 0000000000000206 R12: 0000564dd74f1f60 [ 45.918574] R13: 00007ffe3c658eb0 R14: 00007ffe3c658ee0 R15: 00007ffe3c659240 [ 45.919444] [ 45.919737] [ 45.919956] Allocated by task 212: [ 45.920395] kasan_save_stack+0x22/0x50 [ 45.920906] kasan_set_track+0x25/0x30 [ 45.921408] __kasan_slab_alloc+0x59/0x70 [ 45.921953] kmem_cache_alloc+0x16b/0x370 [ 45.922473] vm_area_dup+0x20/0x160 [ 45.922932] __split_vma+0x170/0x950 [ 45.923399] split_vma+0xc6/0x110 [ 45.923837] mprotect_fixup+0x8d2/0xb30 [ 45.924337] do_mprotect_pkey+0x87e/0xd40 [ 45.924854] __x64_sys_mprotect+0x78/0xc0 [ 45.925374] do_syscall_64+0x3f/0x90 [ 45.925852] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 45.926493] [ 45.926715] Freed by task 212: [ 45.927109] kasan_save_stack+0x22/0x50 [ 45.927606] kasan_set_track+0x25/0x30 [ 45.928099] kasan_save_free_info+0x2b/0x50 [ 45.928624] __kasan_slab_free+0x10a/0x190 [ 45.929155] kmem_cache_free+0x10d/0x4d0 [ 45.929670] rcu_core+0x8c8/0x2860 [ 45.930111] __do_softirq+0x1b7/0x7d4 [ 45.930589] [ 45.930805] Last potentially related work creation: [ 45.931382] kasan_save_stack+0x22/0x50 [ 45.931886] __kasan_record_aux_stack+0x8e/0xa0 [ 45.932458] __call_rcu_common.constprop.0+0x6a/0xb90 [ 45.933097] remove_vma+0x139/0x170 [ 45.933569] do_vmi_align_munmap+0xd4a/0x11f0 [ 45.934122] do_vmi_munmap+0x1f1/0x2b0 [ 45.934610] __vm_munmap+0x138/0x3a0 [ 45.935077] __x64_sys_munmap+0x59/0x80 [ 45.935572] do_syscall_64+0x3f/0x90 [ 45.936044] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 45.936681] [ 45.936901] The buggy address belongs to the object at ffff88800ed69740 [ 45.936901] which belongs to the cache vm_area_struct of size 168 [ 45.938366] The buggy address is located 88 bytes inside of [ 45.938366] freed 168-byte region [ffff88800ed69740, ffff88800ed697e8) [ 45.939768] [ 45.939981] The buggy address belongs to the physical page: [ 45.940635] page:00000000d5466dfb refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xed69 [ 45.941728] memcg:ffff88800ea79201 [ 45.942160] flags: 0x100000000000200(slab|node=0|zone=1) [ 45.942796] page_type: 0xffffffff() [ 45.943242] raw: 0100000000000200 ffff88800879fc80 ffffea00003ac4c0 dead000000000008 [ 45.944157] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ea79201 [ 45.945051] page dumped because: kasan: bad access detected [ 45.945722] [ 45.945938] Memory state around the buggy address: [ 45.946517] ffff88800ed69680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 45.947371] ffff88800ed69700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 45.948222] >ffff88800ed69780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 45.949064] ^ [ 45.949574] ffff88800ed69800: fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 [ 45.950429] ffff88800ed69880: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 45.951270] ================================================================== [ 45.952394] Disabling lock debugging due to kernel taint [ 47.922187] BUG: Bad rss-counter state mm:00000000081e3c22 type:MM_FILEPAGES val:33 [ 47.923363] BUG: Bad rss-counter state mm:00000000081e3c22 type:MM_ANONPAGES val:22 [ 48.380407] BUG: Bad rss-counter state mm:000000003bed9cc0 type:MM_FILEPAGES val:33 [ 48.381546] BUG: Bad rss-counter state mm:000000003bed9cc0 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:44287' (ECDSA) to the list of known hosts. 2023/06/19 14:39:02 fuzzer started 2023/06/19 14:39:02 dialing manager at localhost:44161 2023/06/19 14:39:02 checking machine... 2023/06/19 14:39:02 checking revisions... [ 49.059510] kmemleak: Automatic memory scanning thread ended 2023/06/19 14:39:02 testing simple program... [ 49.109783] cgroup: Unknown subsys name 'net' [ 49.192662] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 14:38:55 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8450c50e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c58000 R12=ffffffff85d3bed0 R13=1ffffffff0a80fc7 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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 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=00007f97b9370530 CR3=000000000d874000 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=210f2ab95570ffb60f41c4b7f1a86dd0 XMM02=eff9b2d0a8fce9cb000000000011d0b0 XMM03=2c67c8bc2e329bc3000000000011d1d8 XMM04=b52004364aad9b1800000000000ae988 XMM05=4ef6dc2caad7b0cc0000000000134808 XMM06=806171799158d9670000000000133288 XMM07=fb795ef6d65770560000000000123b78 XMM08=2c67c8bc2e329bc3000000000011d1d8 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=0000000000000001 RCX=ffffffff863b66a0 RDX=1ffff11001df2e9b RSI=0000000000000001 RDI=0000000000000001 RBP=ffff88800ef974e8 RSP=ffff88800ef97420 R8 =ffffffff863b66a4 R9 =ffff88800ef974d0 R10=0000000000038001 R11=000000000008b5ce R12=ffff88800ef974f0 R13=ffff88800ef974d8 R14=0000000000000005 R15=ffff88800ef97490 RIP=ffffffff81130b54 RFL=00000246 [---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 00007fe4b97ac900 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=00007fe4b9d63618 CR3=000000000cb3a000 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=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000