syzkaller login: [ 52.729272] BUG: Bad rss-counter state mm:0000000031d715f0 type:MM_FILEPAGES val:33 [ 52.730314] BUG: Bad rss-counter state mm:0000000031d715f0 type:MM_ANONPAGES val:22 [ 52.903668] ================================================================== [ 52.904583] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 52.905534] Read of size 8 at addr ffff88800e13b6b0 by task sshd/218 [ 52.906304] [ 52.906527] CPU: 0 PID: 218 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 52.907517] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 52.908489] Call Trace: [ 52.908807] [ 52.909095] dump_stack_lvl+0x91/0xf0 [ 52.909613] print_report+0xcc/0x620 [ 52.910100] ? __virt_addr_valid+0x102/0x340 [ 52.910655] ? vma_interval_tree_remove+0xc75/0xec0 [ 52.911277] ? vma_interval_tree_remove+0xc75/0xec0 [ 52.911891] kasan_report+0xbe/0xf0 [ 52.912368] ? vma_interval_tree_remove+0xc75/0xec0 [ 52.912985] vma_interval_tree_remove+0xc75/0xec0 [ 52.913611] vma_prepare+0xc54/0x11a0 [ 52.914090] __split_vma+0x5af/0x950 [ 52.914564] ? __pfx___split_vma+0x10/0x10 [ 52.915098] ? find_held_lock+0x2c/0x110 [ 52.915625] do_vmi_align_munmap+0x2ba/0x11f0 [ 52.916193] ? lock_is_held_type+0x9f/0x120 [ 52.916736] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 52.917369] ? mtree_range_walk+0x632/0x900 [ 52.917925] ? mas_walk+0x5c7/0x7c0 [ 52.918397] do_vmi_munmap+0x1f1/0x2b0 [ 52.918898] mmap_region+0x1f9/0x2660 [ 52.919389] ? vm_mmap_pgoff+0x15c/0x3a0 [ 52.919897] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 52.920620] ? __pfx_lock_acquire+0x10/0x10 [ 52.921173] ? __pfx_mmap_region+0x10/0x10 [ 52.921710] ? security_mmap_addr+0x7d/0xa0 [ 52.922253] ? get_unmapped_area+0x1f5/0x3f0 [ 52.922809] do_mmap+0x854/0xf00 [ 52.923277] vm_mmap_pgoff+0x1a6/0x3a0 [ 52.923774] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 52.924349] ksys_mmap_pgoff+0x3af/0x500 [ 52.924863] do_syscall_64+0x3f/0x90 [ 52.925350] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 52.926011] RIP: 0033:0x7fb3c2099d82 [ 52.926487] 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 [ 52.928631] RSP: 002b:00007fff67f52588 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 52.929577] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fb3c2099d82 [ 52.930439] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fb3c14d3000 [ 52.931301] RBP: 00007fb3c14d3000 R08: 0000000000000009 R09: 0000000000001000 [ 52.932174] R10: 0000000000000812 R11: 0000000000000206 R12: 000055d26bac5ec0 [ 52.933052] R13: 00007fff67f525a0 R14: 00007fff67f525d0 R15: 00007fff67f52930 [ 52.933993] [ 52.934313] [ 52.934534] Allocated by task 211: [ 52.934967] kasan_save_stack+0x22/0x50 [ 52.935483] kasan_set_track+0x25/0x30 [ 52.935990] __kasan_slab_alloc+0x59/0x70 [ 52.936514] kmem_cache_alloc+0x16b/0x370 [ 52.937041] vm_area_dup+0x20/0x160 [ 52.937524] __split_vma+0x170/0x950 [ 52.938004] split_vma+0xc6/0x110 [ 52.938442] mprotect_fixup+0x8d2/0xb30 [ 52.938941] do_mprotect_pkey+0x87e/0xd40 [ 52.939469] __x64_sys_mprotect+0x78/0xc0 [ 52.939989] do_syscall_64+0x3f/0x90 [ 52.940480] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 52.941125] [ 52.941352] Freed by task 211: [ 52.941755] kasan_save_stack+0x22/0x50 [ 52.942263] kasan_set_track+0x25/0x30 [ 52.942762] kasan_save_free_info+0x2b/0x50 [ 52.943303] __kasan_slab_free+0x10a/0x190 [ 52.943851] kmem_cache_free+0x10d/0x4d0 [ 52.944367] rcu_core+0x8c8/0x2860 [ 52.944816] __do_softirq+0x1b7/0x7d4 [ 52.945300] [ 52.945524] Last potentially related work creation: [ 52.946116] kasan_save_stack+0x22/0x50 [ 52.946628] __kasan_record_aux_stack+0x8e/0xa0 [ 52.947210] __call_rcu_common.constprop.0+0x6a/0xb90 [ 52.947874] remove_vma+0x139/0x170 [ 52.948326] do_vmi_align_munmap+0xd4a/0x11f0 [ 52.948892] do_vmi_munmap+0x1f1/0x2b0 [ 52.949403] __vm_munmap+0x138/0x3a0 [ 52.949881] __x64_sys_munmap+0x59/0x80 [ 52.950384] do_syscall_64+0x3f/0x90 [ 52.950865] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 52.951515] [ 52.951729] Second to last potentially related work creation: [ 52.952423] kasan_save_stack+0x22/0x50 [ 52.952925] __kasan_record_aux_stack+0x8e/0xa0 [ 52.953513] __call_rcu_common.constprop.0+0x6a/0xb90 [ 52.954162] remove_vma+0x139/0x170 [ 52.954626] do_vmi_align_munmap+0xd4a/0x11f0 [ 52.955194] do_vmi_munmap+0x1f1/0x2b0 [ 52.955682] mmap_region+0x1f9/0x2660 [ 52.956157] do_mmap+0x854/0xf00 [ 52.956596] vm_mmap_pgoff+0x1a6/0x3a0 [ 52.957094] ksys_mmap_pgoff+0x7d/0x500 [ 52.957616] do_syscall_64+0x3f/0x90 [ 52.958099] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 52.958743] [ 52.958965] The buggy address belongs to the object at ffff88800e13b658 [ 52.958965] which belongs to the cache vm_area_struct of size 168 [ 52.960451] The buggy address is located 88 bytes inside of [ 52.960451] freed 168-byte region [ffff88800e13b658, ffff88800e13b700) [ 52.961871] [ 52.962087] The buggy address belongs to the physical page: [ 52.962747] page:00000000ed821bcf refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe13b [ 52.963827] memcg:ffff88800e0dfa01 [ 52.964288] flags: 0x100000000000200(slab|node=0|zone=1) [ 52.964951] page_type: 0xffffffff() [ 52.965417] raw: 0100000000000200 ffff88800879fc80 dead000000000100 dead000000000122 [ 52.966358] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e0dfa01 [ 52.967219] page dumped because: kasan: bad access detected [ 52.967835] [ 52.968042] Memory state around the buggy address: [ 52.968592] ffff88800e13b580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 52.969426] ffff88800e13b600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 52.970278] >ffff88800e13b680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 52.971117] ^ [ 52.971709] ffff88800e13b700: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 [ 52.972563] ffff88800e13b780: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 52.973429] ================================================================== [ 52.974480] Disabling lock debugging due to kernel taint [ 54.897388] BUG: Bad rss-counter state mm:000000007f6eeac1 type:MM_FILEPAGES val:33 [ 54.898158] BUG: Bad rss-counter state mm:000000007f6eeac1 type:MM_ANONPAGES val:22 [ 55.451546] BUG: Bad rss-counter state mm:00000000ea305f8e type:MM_FILEPAGES val:33 [ 55.452686] BUG: Bad rss-counter state mm:00000000ea305f8e type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:20898' (ECDSA) to the list of known hosts. 2023/06/20 02:17:06 fuzzer started 2023/06/20 02:17:07 dialing manager at localhost:44161 2023/06/20 02:17:07 checking machine... 2023/06/20 02:17:07 checking revisions... [ 56.088967] kmemleak: Automatic memory scanning thread ended 2023/06/20 02:17:07 testing simple program... [ 56.141440] cgroup: Unknown subsys name 'net' [ 56.189471] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:16:37 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffffffff81741198 RCX=0000000000000001 RDX=1ffff11002b4fe18 RSI=ffff888015a7fdf0 RDI=ffffffff81741198 RBP=ffffffff81741198 RSP=ffff888015a7f018 R8 =0000000000000001 R9 =ffff888015a7f0a8 R10=0000000000038001 R11=000000000001e456 R12=0000000000000001 R13=0000000000000000 R14=ffff88800c9f1b40 R15=0000000000002800 RIP=ffffffff811fc772 RFL=00000283 [--S---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 00007f8d41e3b900 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=00007f8d41e1a020 CR3=000000000dbc6000 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=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 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 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 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=00007f6275769290 CR3=000000000e024000 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=2036303a37313a3230203032206e754a XMM01=73732878696e755f6d6170203a5d3732 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3732325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732036303a37313a3230203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000