syzkaller login: [ 31.559652] BUG: Bad rss-counter state mm:00000000a171ac8f type:MM_FILEPAGES val:33 [ 31.560869] BUG: Bad rss-counter state mm:00000000a171ac8f type:MM_ANONPAGES val:22 [ 31.615954] ================================================================== [ 31.616860] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.617825] Read of size 8 at addr ffff88800e904798 by task sshd/220 [ 31.618587] [ 31.618808] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.619807] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.620778] Call Trace: [ 31.621101] [ 31.621383] dump_stack_lvl+0x91/0xf0 [ 31.621869] print_report+0xcc/0x620 [ 31.622356] ? __virt_addr_valid+0x102/0x340 [ 31.622901] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.623513] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.624123] kasan_report+0xbe/0xf0 [ 31.624603] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.625250] vma_interval_tree_remove+0xc75/0xec0 [ 31.625882] vma_prepare+0xc54/0x11a0 [ 31.626367] __split_vma+0x5af/0x950 [ 31.626846] ? __pfx___split_vma+0x10/0x10 [ 31.627385] ? find_held_lock+0x2c/0x110 [ 31.627910] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.628479] ? lock_is_held_type+0x9f/0x120 [ 31.629037] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.629656] ? mtree_range_walk+0x632/0x900 [ 31.630221] ? mas_walk+0x5c7/0x7c0 [ 31.630712] do_vmi_munmap+0x1f1/0x2b0 [ 31.631204] mmap_region+0x1f9/0x2660 [ 31.631690] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.632219] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.632944] ? __pfx_lock_acquire+0x10/0x10 [ 31.633489] ? __pfx_mmap_region+0x10/0x10 [ 31.634030] ? security_mmap_addr+0x7d/0xa0 [ 31.634566] ? get_unmapped_area+0x1f5/0x3f0 [ 31.635117] do_mmap+0x854/0xf00 [ 31.635569] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.636073] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.636653] ksys_mmap_pgoff+0x3af/0x500 [ 31.637181] do_syscall_64+0x3f/0x90 [ 31.637664] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.638314] RIP: 0033:0x7f147ee6ed82 [ 31.638777] 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 [ 31.640897] RSP: 002b:00007ffe4497f0c8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.641832] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f147ee6ed82 [ 31.642681] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f147e2a8000 [ 31.643548] RBP: 00007f147e2a8000 R08: 0000000000000009 R09: 0000000000001000 [ 31.644413] R10: 0000000000000812 R11: 0000000000000206 R12: 000055ae8d741d90 [ 31.645282] R13: 00007ffe4497f0e0 R14: 00007ffe4497f110 R15: 00007ffe4497f470 [ 31.646143] [ 31.646442] [ 31.646664] Allocated by task 213: [ 31.647099] kasan_save_stack+0x22/0x50 [ 31.647617] kasan_set_track+0x25/0x30 [ 31.648118] __kasan_slab_alloc+0x59/0x70 [ 31.648651] kmem_cache_alloc+0x16b/0x370 [ 31.649182] vm_area_dup+0x20/0x160 [ 31.649642] __split_vma+0x170/0x950 [ 31.650117] split_vma+0xc6/0x110 [ 31.650554] mprotect_fixup+0x8d2/0xb30 [ 31.651070] do_mprotect_pkey+0x87e/0xd40 [ 31.651618] __x64_sys_mprotect+0x78/0xc0 [ 31.652145] do_syscall_64+0x3f/0x90 [ 31.652623] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.653276] [ 31.653494] Freed by task 213: [ 31.653881] kasan_save_stack+0x22/0x50 [ 31.654387] kasan_set_track+0x25/0x30 [ 31.654884] kasan_save_free_info+0x2b/0x50 [ 31.655422] __kasan_slab_free+0x10a/0x190 [ 31.655959] kmem_cache_free+0x10d/0x4d0 [ 31.656479] rcu_core+0x8c8/0x2860 [ 31.656923] __do_softirq+0x1b7/0x7d4 [ 31.657425] [ 31.657639] Last potentially related work creation: [ 31.658220] kasan_save_stack+0x22/0x50 [ 31.658732] __kasan_record_aux_stack+0x8e/0xa0 [ 31.659316] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.659957] remove_vma+0x139/0x170 [ 31.660415] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.661041] do_vmi_munmap+0x1f1/0x2b0 [ 31.661536] __vm_munmap+0x138/0x3a0 [ 31.662004] __x64_sys_munmap+0x59/0x80 [ 31.662499] do_syscall_64+0x3f/0x90 [ 31.662977] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.663628] [ 31.663843] Second to last potentially related work creation: [ 31.664532] kasan_save_stack+0x22/0x50 [ 31.665051] __kasan_record_aux_stack+0x8e/0xa0 [ 31.665630] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.666285] remove_vma+0x139/0x170 [ 31.666737] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.667317] do_vmi_munmap+0x1f1/0x2b0 [ 31.667819] __vm_munmap+0x138/0x3a0 [ 31.668292] elf_map+0x26f/0x310 [ 31.668740] load_elf_binary+0xd82/0x5030 [ 31.669290] bprm_execve+0x803/0x1940 [ 31.669758] do_execveat_common+0x734/0x8e0 [ 31.670283] __x64_sys_execve+0x93/0xc0 [ 31.670776] do_syscall_64+0x3f/0x90 [ 31.671258] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.671899] [ 31.672121] The buggy address belongs to the object at ffff88800e904740 [ 31.672121] which belongs to the cache vm_area_struct of size 168 [ 31.673608] The buggy address is located 88 bytes inside of [ 31.673608] freed 168-byte region [ffff88800e904740, ffff88800e9047e8) [ 31.675016] [ 31.675234] The buggy address belongs to the physical page: [ 31.675900] page:00000000b156d65e refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe904 [ 31.676975] memcg:ffff88800f479201 [ 31.677424] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.678072] page_type: 0xffffffff() [ 31.678537] raw: 0100000000000200 ffff8880087a0c80 ffffea00003da0c0 dead000000000008 [ 31.679447] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800f479201 [ 31.680355] page dumped because: kasan: bad access detected [ 31.681035] [ 31.681251] Memory state around the buggy address: [ 31.681832] ffff88800e904680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.682700] ffff88800e904700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 31.683574] >ffff88800e904780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 31.684427] ^ [ 31.684926] ffff88800e904800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 31.685793] ffff88800e904880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 31.686653] ================================================================== [ 31.687565] Disabling lock debugging due to kernel taint [ 34.121407] BUG: Bad rss-counter state mm:00000000b3688c81 type:MM_FILEPAGES val:33 [ 34.122742] BUG: Bad rss-counter state mm:00000000b3688c81 type:MM_ANONPAGES val:22 [ 34.601666] BUG: Bad rss-counter state mm:00000000ee15ad69 type:MM_FILEPAGES val:33 [ 34.602764] BUG: Bad rss-counter state mm:00000000ee15ad69 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:53245' (ECDSA) to the list of known hosts. 2023/06/20 19:20:36 fuzzer started 2023/06/20 19:20:37 dialing manager at localhost:36067 2023/06/20 19:20:37 checking machine... 2023/06/20 19:20:37 checking revisions... [ 35.353608] kmemleak: Automatic memory scanning thread ended 2023/06/20 19:20:37 testing simple program... [ 35.409892] cgroup: Unknown subsys name 'net' [ 35.463135] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 19:20:36 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000001 RCX=ffffffff860d8256 RDX=1ffff11002e5be7d RSI=0000000000000000 RDI=0000000000000001 RBP=ffff8880172df440 RSP=ffff8880172df378 R8 =ffffffff860d825a R9 =ffff8880172df428 R10=0000000000038001 R11=0000000000010b8d R12=ffff8880172df448 R13=ffff8880172df430 R14=ffff8880172df520 R15=ffff8880172df3e8 RIP=ffffffff81131271 RFL=00000216 [----AP-] 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 00007f8fd9be1900 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=00007ffd363f8000 CR3=0000000016dbc000 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=635f6e6f69737365733a4d41503d706f XMM01=6f6c5f6d61702c78756e696c65735f6d XMM02=61702c74696d7265705f6d61702c7469 XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 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=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c04400 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=00007f3b149ed008 CR3=000000000ecae000 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=49c820b249054f919c4db601bda89f3d XMM02=00000000001198b0eff9b2d0a8fce9cb XMM03=00000000001199802c67c8bc2e329bc3 XMM04=1d3daec2e21f075d00000000000ae988 XMM05=19e9129bd510f2350000000000132988 XMM06=4fda316b135da52b0000000000132810 XMM07=e042d86d42eb936e00000000001216c8 XMM08=e6d0a9c7c4007e520000000000119980 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000