syzkaller login: [ 35.704267] BUG: Bad rss-counter state mm:0000000015ebd5bb type:MM_FILEPAGES val:33 [ 35.706269] BUG: Bad rss-counter state mm:0000000015ebd5bb type:MM_ANONPAGES val:22 [ 35.867904] ================================================================== [ 35.868889] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 35.869899] Read of size 8 at addr ffff88800e15ba50 by task sshd/219 [ 35.870828] [ 35.871056] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 35.871950] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 35.872942] Call Trace: [ 35.873296] <TASK> [ 35.873584] dump_stack_lvl+0x91/0xf0 [ 35.874115] print_report+0xcc/0x620 [ 35.874630] ? __virt_addr_valid+0x102/0x340 [ 35.875226] ? vma_interval_tree_remove+0xc75/0xec0 [ 35.875884] ? vma_interval_tree_remove+0xc75/0xec0 [ 35.876543] kasan_report+0xbe/0xf0 [ 35.877045] ? vma_interval_tree_remove+0xc75/0xec0 [ 35.877709] vma_interval_tree_remove+0xc75/0xec0 [ 35.878341] vma_prepare+0xc54/0x11a0 [ 35.878853] __split_vma+0x5af/0x950 [ 35.879351] ? __pfx___split_vma+0x10/0x10 [ 35.879913] ? find_held_lock+0x2c/0x110 [ 35.880458] do_vmi_align_munmap+0x2ba/0x11f0 [ 35.881059] ? lock_is_held_type+0x9f/0x120 [ 35.881669] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 35.882318] ? mtree_range_walk+0x632/0x900 [ 35.882906] ? mas_walk+0x5c7/0x7c0 [ 35.883417] do_vmi_munmap+0x1f1/0x2b0 [ 35.883944] mmap_region+0x1f9/0x2660 [ 35.884461] ? vm_mmap_pgoff+0x15c/0x3a0 [ 35.884992] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 35.885768] ? __pfx_lock_acquire+0x10/0x10 [ 35.886334] ? __pfx_mmap_region+0x10/0x10 [ 35.886898] ? security_mmap_addr+0x7d/0xa0 [ 35.887465] ? get_unmapped_area+0x1f5/0x3f0 [ 35.888030] do_mmap+0x854/0xf00 [ 35.888486] vm_mmap_pgoff+0x1a6/0x3a0 [ 35.888992] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 35.889585] ksys_mmap_pgoff+0x3af/0x500 [ 35.890107] do_syscall_64+0x3f/0x90 [ 35.890603] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 35.891279] RIP: 0033:0x7fe51b603d82 [ 35.891750] 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 [ 35.893925] RSP: 002b:00007ffda96b2578 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 35.894851] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe51b603d82 [ 35.895706] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fe51aa3d000 [ 35.896567] RBP: 00007fe51aa3d000 R08: 0000000000000009 R09: 0000000000001000 [ 35.897433] R10: 0000000000000812 R11: 0000000000000206 R12: 0000559601163b20 [ 35.898291] R13: 00007ffda96b2590 R14: 00007ffda96b25c0 R15: 00007ffda96b2920 [ 35.899157] </TASK> [ 35.899453] [ 35.899671] Allocated by task 212: [ 35.900104] kasan_save_stack+0x22/0x50 [ 35.900608] kasan_set_track+0x25/0x30 [ 35.901115] __kasan_slab_alloc+0x59/0x70 [ 35.901662] kmem_cache_alloc+0x16b/0x370 [ 35.902190] vm_area_dup+0x20/0x160 [ 35.902644] __split_vma+0x170/0x950 [ 35.903115] split_vma+0xc6/0x110 [ 35.903559] mprotect_fixup+0x8d2/0xb30 [ 35.904058] do_mprotect_pkey+0x87e/0xd40 [ 35.904579] __x64_sys_mprotect+0x78/0xc0 [ 35.905094] do_syscall_64+0x3f/0x90 [ 35.905577] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 35.906220] [ 35.906435] Freed by task 212: [ 35.906828] kasan_save_stack+0x22/0x50 [ 35.907336] kasan_set_track+0x25/0x30 [ 35.907826] kasan_save_free_info+0x2b/0x50 [ 35.908366] __kasan_slab_free+0x10a/0x190 [ 35.908894] kmem_cache_free+0x10d/0x4d0 [ 35.909413] rcu_core+0x8c8/0x2860 [ 35.909855] __do_softirq+0x1b7/0x7d4 [ 35.910345] [ 35.910561] Last potentially related work creation: [ 35.911142] kasan_save_stack+0x22/0x50 [ 35.911640] __kasan_record_aux_stack+0x8e/0xa0 [ 35.912217] __call_rcu_common.constprop.0+0x6a/0xb90 [ 35.912864] remove_vma+0x139/0x170 [ 35.913333] do_vmi_align_munmap+0xd4a/0x11f0 [ 35.913891] do_vmi_munmap+0x1f1/0x2b0 [ 35.914392] __vm_munmap+0x138/0x3a0 [ 35.914858] __x64_sys_munmap+0x59/0x80 [ 35.915350] do_syscall_64+0x3f/0x90 [ 35.915820] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 35.916464] [ 35.916678] Second to last potentially related work creation: [ 35.917384] kasan_save_stack+0x22/0x50 [ 35.917886] __kasan_record_aux_stack+0x8e/0xa0 [ 35.918456] __call_rcu_common.constprop.0+0x6a/0xb90 [ 35.919109] remove_vma+0x139/0x170 [ 35.919568] do_vmi_align_munmap+0xd4a/0x11f0 [ 35.920126] do_vmi_munmap+0x1f1/0x2b0 [ 35.920612] __vm_munmap+0x138/0x3a0 [ 35.921073] __x64_sys_munmap+0x59/0x80 [ 35.921598] do_syscall_64+0x3f/0x90 [ 35.922076] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 35.922717] [ 35.922934] The buggy address belongs to the object at ffff88800e15b9f8 [ 35.922934] which belongs to the cache vm_area_struct of size 168 [ 35.924437] The buggy address is located 88 bytes inside of [ 35.924437] freed 168-byte region [ffff88800e15b9f8, ffff88800e15baa0) [ 35.925894] [ 35.926115] The buggy address belongs to the physical page: [ 35.926793] page:0000000035b43e8d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe15b [ 35.927910] memcg:ffff88800df7d601 [ 35.928355] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 35.929069] page_type: 0xffffffff() [ 35.929546] raw: 0100000000000200 ffff8880087a0c80 ffffea0000356bc0 dead000000000003 [ 35.930493] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800df7d601 [ 35.931418] page dumped because: kasan: bad access detected [ 35.932094] [ 35.932311] Memory state around the buggy address: [ 35.932912] ffff88800e15b900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 35.933797] ffff88800e15b980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa [ 35.934670] >ffff88800e15ba00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 35.935527] ^ [ 35.936233] ffff88800e15ba80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 35.937094] ffff88800e15bb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 35.937970] ================================================================== [ 35.939000] Disabling lock debugging due to kernel taint [ 37.795805] BUG: Bad rss-counter state mm:00000000825ed9db type:MM_FILEPAGES val:33 [ 37.797066] BUG: Bad rss-counter state mm:00000000825ed9db type:MM_ANONPAGES val:22 [ 38.256245] BUG: Bad rss-counter state mm:000000006684ca49 type:MM_FILEPAGES val:33 [ 38.257648] BUG: Bad rss-counter state mm:000000006684ca49 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:44377' (ECDSA) to the list of known hosts. 2023/06/20 11:32:11 fuzzer started 2023/06/20 11:32:11 dialing manager at localhost:36067 2023/06/20 11:32:11 checking machine... 2023/06/20 11:32:11 checking revisions... [ 38.958882] kmemleak: Automatic memory scanning thread ended 2023/06/20 11:32:11 testing simple program... [ 39.009705] cgroup: Unknown subsys name 'net' [ 39.049620] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 11:32:11 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8451250e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c04000 R12=ffffffff85d3d350 R13=1ffffffff0a80fc7 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 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=00007fc690020b70 CR3=0000000014710000 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=2031313a32333a3131203032206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732030313a32333a3131203032 XMM08=00000000000000000000008300000100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffffffff864bbb54 RBX=0000000000000001 RCX=ffffffff864bbb54 RDX=dffffc0000000000 RSI=ffffffff864bbb4e RDI=ffffffff86055348 RBP=ffff888016c7eff0 RSP=ffff888016c7ef28 R8 =ffffffff864bbb4e R9 =ffff888016c7efd8 R10=0000000000038001 R11=00000000000b6a61 R12=ffff888016c7eff8 R13=ffff888016c7efe0 R14=ffff888016c7efd9 R15=ffff888016c7ef98 RIP=ffffffff81130a4c RFL=00000282 [--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 =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f94a589f900 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=000055579b735b88 CR3=0000000018518000 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=652022746f6f72223d74636361207469 XMM02=3d6c616e696d72657420322e322e302e XMM03=3d656d616e74736f682022646873732f XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000