syzkaller login: [ 28.679926] BUG: Bad rss-counter state mm:000000003a1325c9 type:MM_FILEPAGES val:33 [ 28.681319] BUG: Bad rss-counter state mm:000000003a1325c9 type:MM_ANONPAGES val:22 [ 28.874386] ================================================================== [ 28.875706] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.877230] Read of size 8 at addr ffff88800e6daed8 by task sshd/220 [ 28.878343] [ 28.878653] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 28.879925] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.881340] Call Trace: [ 28.881800] [ 28.882203] dump_stack_lvl+0x91/0xf0 [ 28.882900] print_report+0xcc/0x620 [ 28.883617] ? __virt_addr_valid+0x102/0x340 [ 28.884278] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.884881] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.885509] kasan_report+0xbe/0xf0 [ 28.885981] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.886610] vma_interval_tree_remove+0xc75/0xec0 [ 28.887210] vma_prepare+0xc54/0x11a0 [ 28.887687] __split_vma+0x5af/0x950 [ 28.888164] ? __pfx___split_vma+0x10/0x10 [ 28.888694] ? find_held_lock+0x2c/0x110 [ 28.889191] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.889739] ? lock_is_held_type+0x9f/0x120 [ 28.890259] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.890871] ? mtree_range_walk+0x632/0x900 [ 28.891454] ? mas_walk+0x5c7/0x7c0 [ 28.891928] do_vmi_munmap+0x1f1/0x2b0 [ 28.892417] mmap_region+0x1f9/0x2660 [ 28.892907] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.893424] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.894131] ? __pfx_lock_acquire+0x10/0x10 [ 28.894710] ? __pfx_mmap_region+0x10/0x10 [ 28.895342] ? security_mmap_addr+0x7d/0xa0 [ 28.895940] ? get_unmapped_area+0x1f5/0x3f0 [ 28.896555] do_mmap+0x854/0xf00 [ 28.897063] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.897635] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.898232] ksys_mmap_pgoff+0x3af/0x500 [ 28.898786] do_syscall_64+0x3f/0x90 [ 28.899288] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.899937] RIP: 0033:0x7ff5e3d24d82 [ 28.900387] 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 [ 28.902498] RSP: 002b:00007ffc6543ba28 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.903410] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007ff5e3d24d82 [ 28.904256] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007ff5e315e000 [ 28.905100] RBP: 00007ff5e315e000 R08: 0000000000000009 R09: 0000000000001000 [ 28.905936] R10: 0000000000000812 R11: 0000000000000206 R12: 00005606ec18ad90 [ 28.906786] R13: 00007ffc6543ba40 R14: 00007ffc6543ba70 R15: 00007ffc6543bdd0 [ 28.907656] [ 28.907942] [ 28.908155] Allocated by task 211: [ 28.908575] kasan_save_stack+0x22/0x50 [ 28.909114] kasan_set_track+0x25/0x30 [ 28.909606] __kasan_slab_alloc+0x59/0x70 [ 28.910127] kmem_cache_alloc+0x16b/0x370 [ 28.910637] vm_area_dup+0x20/0x160 [ 28.911085] __split_vma+0x170/0x950 [ 28.911559] split_vma+0xc6/0x110 [ 28.911995] mprotect_fixup+0x8d2/0xb30 [ 28.912507] do_mprotect_pkey+0x87e/0xd40 [ 28.913057] __x64_sys_mprotect+0x78/0xc0 [ 28.913585] do_syscall_64+0x3f/0x90 [ 28.914072] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.914722] [ 28.914943] Freed by task 211: [ 28.915360] kasan_save_stack+0x22/0x50 [ 28.915873] kasan_set_track+0x25/0x30 [ 28.916378] kasan_save_free_info+0x2b/0x50 [ 28.916918] __kasan_slab_free+0x10a/0x190 [ 28.917461] kmem_cache_free+0x10d/0x4d0 [ 28.917983] rcu_core+0x8c8/0x2860 [ 28.918521] __do_softirq+0x1b7/0x7d4 [ 28.919005] [ 28.919237] Last potentially related work creation: [ 28.919820] kasan_save_stack+0x22/0x50 [ 28.920332] __kasan_record_aux_stack+0x8e/0xa0 [ 28.920908] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.921569] remove_vma+0x139/0x170 [ 28.922027] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.922591] do_vmi_munmap+0x1f1/0x2b0 [ 28.923077] __vm_munmap+0x138/0x3a0 [ 28.923562] __x64_sys_munmap+0x59/0x80 [ 28.924058] do_syscall_64+0x3f/0x90 [ 28.924549] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.925193] [ 28.925413] Second to last potentially related work creation: [ 28.926097] kasan_save_stack+0x22/0x50 [ 28.926601] __kasan_record_aux_stack+0x8e/0xa0 [ 28.927191] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.927843] remove_vma+0x139/0x170 [ 28.928305] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.928872] do_vmi_munmap+0x1f1/0x2b0 [ 28.929368] mmap_region+0x1f9/0x2660 [ 28.929858] do_mmap+0x854/0xf00 [ 28.930295] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.930785] ksys_mmap_pgoff+0x3af/0x500 [ 28.931303] do_syscall_64+0x3f/0x90 [ 28.931790] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.932430] [ 28.932648] The buggy address belongs to the object at ffff88800e6dae80 [ 28.932648] which belongs to the cache vm_area_struct of size 168 [ 28.934134] The buggy address is located 88 bytes inside of [ 28.934134] freed 168-byte region [ffff88800e6dae80, ffff88800e6daf28) [ 28.935573] [ 28.935797] The buggy address belongs to the physical page: [ 28.936459] page:000000007275b434 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe6da [ 28.937564] memcg:ffff88800e4f7c01 [ 28.937997] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 28.938701] page_type: 0xffffffff() [ 28.939151] raw: 0100000000000200 ffff8880087a0c80 ffffea0000390bc0 dead000000000003 [ 28.940085] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e4f7c01 [ 28.941009] page dumped because: kasan: bad access detected [ 28.941671] [ 28.941895] Memory state around the buggy address: [ 28.942474] ffff88800e6dad80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 28.943343] ffff88800e6dae00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 28.944212] >ffff88800e6dae80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.945082] ^ [ 28.945814] ffff88800e6daf00: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc [ 28.946683] ffff88800e6daf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.947567] ================================================================== [ 28.948510] Disabling lock debugging due to kernel taint [ 31.058000] BUG: Bad rss-counter state mm:00000000a43fa5a3 type:MM_FILEPAGES val:33 [ 31.059014] BUG: Bad rss-counter state mm:00000000a43fa5a3 type:MM_ANONPAGES val:22 [ 31.430569] BUG: Bad rss-counter state mm:00000000465f9ef5 type:MM_FILEPAGES val:33 [ 31.431840] BUG: Bad rss-counter state mm:00000000465f9ef5 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:47709' (ECDSA) to the list of known hosts. 2023/06/20 15:03:07 fuzzer started 2023/06/20 15:03:08 dialing manager at localhost:36067 2023/06/20 15:03:08 checking machine... 2023/06/20 15:03:08 checking revisions... [ 32.100257] kmemleak: Automatic memory scanning thread ended 2023/06/20 15:03:08 testing simple program... [ 32.151876] cgroup: Unknown subsys name 'net' [ 32.188110] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 15:03:07 Registers: info registers vcpu 0 RAX=1ffff11001d56169 RBX=ffff88800eab0b18 RCX=1ffff11001a5fc86 RDX=dffffc0000000000 RSI=ffff88800ec58df0 RDI=ffff88800eab0b48 RBP=ffff88800d2fe400 RSP=ffff888015eb7c08 R8 =0000000000000001 R9 =0000000000000246 R10=0000000000000003 R11=00000000000b6a61 R12=ffff88800ec58de0 R13=0000000000000000 R14=ffff88800db7daf8 R15=ffff88800db7dab0 RIP=ffffffff8184767e 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 00007fb02f8b5900 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=00007fb02fe6d0b0 CR3=000000000cc12000 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=2037303a33303a3531203032206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732037303a33303a3531203032 XMM08=3d656e696c646d632022656369767265 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=0000000000000001 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=00007f3c2754d770 CR3=000000000da88000 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=f970fc5f4a8426bc8f40915f3b78f00e XMM02=ec2efd57dc4c00df000000000011fc28 XMM03=4b0fe690d549db9c000000000011fcf8 XMM04=6c54162955b7167300000000000ae988 XMM05=dfcdbad4f1609c370000000000133e58 XMM06=43d4312ec06dd1060000000000132cc0 XMM07=e042d86d42eb936e00000000001228b0 XMM08=4b0fe690d549db9c000000000011fcf8 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000