syzkaller login: [ 32.621328] BUG: Bad rss-counter state mm:00000000e4e51c3b type:MM_FILEPAGES val:33 [ 32.622075] BUG: Bad rss-counter state mm:00000000e4e51c3b type:MM_ANONPAGES val:22 [ 32.654868] ================================================================== [ 32.655636] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 32.656325] Read of size 8 at addr ffff88800c5c3798 by task sshd/219 [ 32.656871] [ 32.657029] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 32.657805] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 32.658568] Call Trace: [ 32.658851] [ 32.659052] dump_stack_lvl+0x91/0xf0 [ 32.659397] print_report+0xcc/0x620 [ 32.659733] ? __virt_addr_valid+0x102/0x340 [ 32.660119] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.660549] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.660987] kasan_report+0xbe/0xf0 [ 32.661365] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.661796] vma_interval_tree_remove+0xc75/0xec0 [ 32.662219] vma_prepare+0xc54/0x11a0 [ 32.662559] __split_vma+0x5af/0x950 [ 32.662882] ? __pfx___split_vma+0x10/0x10 [ 32.663241] ? find_held_lock+0x2c/0x110 [ 32.663592] do_vmi_align_munmap+0x2ba/0x11f0 [ 32.663973] ? lock_is_held_type+0x9f/0x120 [ 32.664327] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 32.664736] ? mtree_range_walk+0x632/0x900 [ 32.665138] ? mas_walk+0x5c7/0x7c0 [ 32.665462] do_vmi_munmap+0x1f1/0x2b0 [ 32.665799] mmap_region+0x1f9/0x2660 [ 32.666126] ? vm_mmap_pgoff+0x15c/0x3a0 [ 32.666489] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 32.666979] ? __pfx_lock_acquire+0x10/0x10 [ 32.667350] ? __pfx_mmap_region+0x10/0x10 [ 32.667708] ? security_mmap_addr+0x7d/0xa0 [ 32.668062] ? get_unmapped_area+0x1f5/0x3f0 [ 32.668430] do_mmap+0x854/0xf00 [ 32.668737] vm_mmap_pgoff+0x1a6/0x3a0 [ 32.669081] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 32.669535] ksys_mmap_pgoff+0x3af/0x500 [ 32.669880] do_syscall_64+0x3f/0x90 [ 32.670209] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.670648] RIP: 0033:0x7facf30fad82 [ 32.670985] 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 [ 32.672443] RSP: 002b:00007ffdc8ae5558 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 32.673066] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007facf30fad82 [ 32.673692] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007facf2534000 [ 32.674296] RBP: 00007facf2534000 R08: 0000000000000009 R09: 0000000000001000 [ 32.674910] R10: 0000000000000812 R11: 0000000000000206 R12: 0000564c95f82ec0 [ 32.675504] R13: 00007ffdc8ae5570 R14: 00007ffdc8ae55a0 R15: 00007ffdc8ae5900 [ 32.676133] [ 32.676335] [ 32.676483] Allocated by task 212: [ 32.676788] kasan_save_stack+0x22/0x50 [ 32.677193] kasan_set_track+0x25/0x30 [ 32.677535] __kasan_slab_alloc+0x59/0x70 [ 32.677906] kmem_cache_alloc+0x16b/0x370 [ 32.678270] vm_area_dup+0x20/0x160 [ 32.678587] __split_vma+0x170/0x950 [ 32.678918] split_vma+0xc6/0x110 [ 32.679225] mprotect_fixup+0x8d2/0xb30 [ 32.679572] do_mprotect_pkey+0x87e/0xd40 [ 32.679934] __x64_sys_mprotect+0x78/0xc0 [ 32.680300] do_syscall_64+0x3f/0x90 [ 32.680634] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.681081] [ 32.681277] Freed by task 212: [ 32.681547] kasan_save_stack+0x22/0x50 [ 32.681903] kasan_set_track+0x25/0x30 [ 32.682248] kasan_save_free_info+0x2b/0x50 [ 32.682611] __kasan_slab_free+0x10a/0x190 [ 32.682992] kmem_cache_free+0x10d/0x4d0 [ 32.683350] rcu_core+0x8c8/0x2860 [ 32.683659] __do_softirq+0x1b7/0x7d4 [ 32.683999] [ 32.684171] Last potentially related work creation: [ 32.684581] kasan_save_stack+0x22/0x50 [ 32.684930] __kasan_record_aux_stack+0x8e/0xa0 [ 32.685358] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.685808] remove_vma+0x139/0x170 [ 32.686131] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.686519] do_vmi_munmap+0x1f1/0x2b0 [ 32.686884] __vm_munmap+0x138/0x3a0 [ 32.687210] __x64_sys_munmap+0x59/0x80 [ 32.687549] do_syscall_64+0x3f/0x90 [ 32.687924] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.688403] [ 32.688561] The buggy address belongs to the object at ffff88800c5c3740 [ 32.688561] which belongs to the cache vm_area_struct of size 168 [ 32.689652] The buggy address is located 88 bytes inside of [ 32.689652] freed 168-byte region [ffff88800c5c3740, ffff88800c5c37e8) [ 32.690634] [ 32.690783] The buggy address belongs to the physical page: [ 32.691246] page:000000006655ae49 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xc5c3 [ 32.692003] memcg:ffff888015a6bb01 [ 32.692298] flags: 0x100000000000200(slab|node=0|zone=1) [ 32.692766] page_type: 0xffffffff() [ 32.693090] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 32.693753] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888015a6bb01 [ 32.694395] page dumped because: kasan: bad access detected [ 32.694882] [ 32.695033] Memory state around the buggy address: [ 32.695445] ffff88800c5c3680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 32.696042] ffff88800c5c3700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 32.696661] >ffff88800c5c3780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 32.697323] ^ [ 32.697666] ffff88800c5c3800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 32.698257] ffff88800c5c3880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 32.698850] ================================================================== [ 32.699871] Disabling lock debugging due to kernel taint [ 34.105790] BUG: Bad rss-counter state mm:0000000090a938bf type:MM_FILEPAGES val:33 [ 34.106550] BUG: Bad rss-counter state mm:0000000090a938bf type:MM_ANONPAGES val:22 [ 34.464250] BUG: Bad rss-counter state mm:00000000261bb3d3 type:MM_FILEPAGES val:33 [ 34.465338] BUG: Bad rss-counter state mm:00000000261bb3d3 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:14555' (ECDSA) to the list of known hosts. 2023/06/20 09:31:54 fuzzer started 2023/06/20 09:31:54 dialing manager at localhost:44161 2023/06/20 09:31:54 checking machine... 2023/06/20 09:31:54 checking revisions... [ 35.029660] kmemleak: Automatic memory scanning thread ended 2023/06/20 09:31:54 testing simple program... [ 35.061579] cgroup: Unknown subsys name 'net' [ 35.098189] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 09:31:52 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=00007f677d10ac20 CR3=000000000ed38000 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=2034353a31333a3930203032206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732033353a31333a3930203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=00007f9dfa3f0e07 RCX=0000000000000100 RDX=ffff888015b7b680 RSI=00007f9dfa3f0e07 RDI=ffffffff856528e0 RBP=00007f9dfa3f0e07 RSP=ffff88806cf09a40 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000000 R11=00000000000b6996 R12=ffff88806cf09b60 R13=0000000000000000 R14=ffff888015b7b680 R15=ffff8880169dfb80 RIP=ffffffff814c83d8 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 00007f9df985e900 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=000055b39a309c28 CR3=000000001a2e2000 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