syzkaller login: [ 61.651971] BUG: Bad rss-counter state mm:00000000ac295f41 type:MM_FILEPAGES val:33 [ 61.653254] BUG: Bad rss-counter state mm:00000000ac295f41 type:MM_ANONPAGES val:22 [ 61.693460] ================================================================== [ 61.694406] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 61.695483] Read of size 8 at addr ffff88800ec11ed8 by task sshd/219 [ 61.696241] [ 61.696457] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 61.697302] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 61.698267] Call Trace: [ 61.698588] [ 61.698895] dump_stack_lvl+0x91/0xf0 [ 61.699382] print_report+0xcc/0x620 [ 61.699864] ? __virt_addr_valid+0x102/0x340 [ 61.700409] ? vma_interval_tree_remove+0xc75/0xec0 [ 61.701020] ? vma_interval_tree_remove+0xc75/0xec0 [ 61.701627] kasan_report+0xbe/0xf0 [ 61.702102] ? vma_interval_tree_remove+0xc75/0xec0 [ 61.702719] vma_interval_tree_remove+0xc75/0xec0 [ 61.703328] vma_prepare+0xc54/0x11a0 [ 61.703806] __split_vma+0x5af/0x950 [ 61.704269] ? __pfx___split_vma+0x10/0x10 [ 61.704798] ? find_held_lock+0x2c/0x110 [ 61.705313] do_vmi_align_munmap+0x2ba/0x11f0 [ 61.705873] ? lock_is_held_type+0x9f/0x120 [ 61.706415] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 61.707034] ? mtree_range_walk+0x632/0x900 [ 61.707578] ? mas_walk+0x5c7/0x7c0 [ 61.708046] do_vmi_munmap+0x1f1/0x2b0 [ 61.708543] mmap_region+0x1f9/0x2660 [ 61.709021] ? vm_mmap_pgoff+0x15c/0x3a0 [ 61.709528] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 61.710231] ? __pfx_lock_acquire+0x10/0x10 [ 61.710757] ? __pfx_mmap_region+0x10/0x10 [ 61.711301] ? security_mmap_addr+0x7d/0xa0 [ 61.711825] ? get_unmapped_area+0x1f5/0x3f0 [ 61.712368] do_mmap+0x854/0xf00 [ 61.712799] vm_mmap_pgoff+0x1a6/0x3a0 [ 61.713289] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 61.713846] ksys_mmap_pgoff+0x3af/0x500 [ 61.714347] do_syscall_64+0x3f/0x90 [ 61.714831] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.715471] RIP: 0033:0x7ff255813d82 [ 61.715932] 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 [ 61.718039] RSP: 002b:00007ffdbbd917d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 61.718957] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007ff255813d82 [ 61.719796] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007ff254c4d000 [ 61.720626] RBP: 00007ff254c4d000 R08: 0000000000000009 R09: 0000000000001000 [ 61.721461] R10: 0000000000000812 R11: 0000000000000206 R12: 0000562986f38ec0 [ 61.722301] R13: 00007ffdbbd917f0 R14: 00007ffdbbd91820 R15: 00007ffdbbd91b80 [ 61.723173] [ 61.723463] [ 61.723674] Allocated by task 212: [ 61.724104] kasan_save_stack+0x22/0x50 [ 61.724601] kasan_set_track+0x25/0x30 [ 61.725102] __kasan_slab_alloc+0x59/0x70 [ 61.725625] kmem_cache_alloc+0x16b/0x370 [ 61.726134] vm_area_dup+0x20/0x160 [ 61.726591] __split_vma+0x170/0x950 [ 61.727059] split_vma+0xc6/0x110 [ 61.727501] mprotect_fixup+0x8d2/0xb30 [ 61.728002] do_mprotect_pkey+0x87e/0xd40 [ 61.728517] __x64_sys_mprotect+0x78/0xc0 [ 61.729038] do_syscall_64+0x3f/0x90 [ 61.729506] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.730142] [ 61.730356] Freed by task 212: [ 61.730747] kasan_save_stack+0x22/0x50 [ 61.731268] kasan_set_track+0x25/0x30 [ 61.731760] kasan_save_free_info+0x2b/0x50 [ 61.732286] __kasan_slab_free+0x10a/0x190 [ 61.732810] kmem_cache_free+0x10d/0x4d0 [ 61.733315] rcu_core+0x8c8/0x2860 [ 61.733754] __do_softirq+0x1b7/0x7d4 [ 61.734226] [ 61.734439] Last potentially related work creation: [ 61.735024] kasan_save_stack+0x22/0x50 [ 61.735518] __kasan_record_aux_stack+0x8e/0xa0 [ 61.736084] __call_rcu_common.constprop.0+0x6a/0xb90 [ 61.736717] remove_vma+0x139/0x170 [ 61.737167] do_vmi_align_munmap+0xd4a/0x11f0 [ 61.737714] do_vmi_munmap+0x1f1/0x2b0 [ 61.738197] __vm_munmap+0x138/0x3a0 [ 61.738659] __x64_sys_munmap+0x59/0x80 [ 61.739362] do_syscall_64+0x3f/0x90 [ 61.739966] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.740749] [ 61.741012] Second to last potentially related work creation: [ 61.741853] kasan_save_stack+0x22/0x50 [ 61.742469] __kasan_record_aux_stack+0x8e/0xa0 [ 61.743211] __call_rcu_common.constprop.0+0x6a/0xb90 [ 61.743995] remove_vma+0x139/0x170 [ 61.744547] do_vmi_align_munmap+0xd4a/0x11f0 [ 61.745234] do_vmi_munmap+0x1f1/0x2b0 [ 61.745817] mmap_region+0x1f9/0x2660 [ 61.746410] do_mmap+0x854/0xf00 [ 61.746946] vm_mmap_pgoff+0x1a6/0x3a0 [ 61.747549] ksys_mmap_pgoff+0x7d/0x500 [ 61.748146] do_syscall_64+0x3f/0x90 [ 61.748736] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.749518] [ 61.749779] The buggy address belongs to the object at ffff88800ec11e80 [ 61.749779] which belongs to the cache vm_area_struct of size 168 [ 61.751598] The buggy address is located 88 bytes inside of [ 61.751598] freed 168-byte region [ffff88800ec11e80, ffff88800ec11f28) [ 61.753336] [ 61.753597] The buggy address belongs to the physical page: [ 61.754418] page:00000000a5ae0723 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800ec11740 pfn:0xec11 [ 61.755924] memcg:ffff88800c867401 [ 61.756343] flags: 0x100000000000200(slab|node=0|zone=1) [ 61.756985] page_type: 0xffffffff() [ 61.757434] raw: 0100000000000200 ffff88800879fc80 ffffea0000380cd0 ffff8880084d4e88 [ 61.758356] raw: ffff88800ec11740 000000000011000d 00000001ffffffff ffff88800c867401 [ 61.759264] page dumped because: kasan: bad access detected [ 61.759927] [ 61.760142] Memory state around the buggy address: [ 61.760736] ffff88800ec11d80: fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 61.761611] ffff88800ec11e00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 61.762460] >ffff88800ec11e80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 61.763329] ^ [ 61.764043] ffff88800ec11f00: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc [ 61.764902] ffff88800ec11f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 61.765740] ================================================================== [ 61.767013] Disabling lock debugging due to kernel taint [ 63.946328] BUG: Bad rss-counter state mm:00000000d6db02d4 type:MM_FILEPAGES val:33 [ 63.947341] BUG: Bad rss-counter state mm:00000000d6db02d4 type:MM_ANONPAGES val:22 [ 64.451466] BUG: Bad rss-counter state mm:0000000016754e6b type:MM_FILEPAGES val:33 [ 64.452689] BUG: Bad rss-counter state mm:0000000016754e6b type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:5204' (ECDSA) to the list of known hosts. 2023/06/20 02:40:54 fuzzer started 2023/06/20 02:40:54 dialing manager at localhost:44161 2023/06/20 02:40:54 checking machine... 2023/06/20 02:40:54 checking revisions... [ 65.172411] kmemleak: Automatic memory scanning thread ended 2023/06/20 02:40:54 testing simple program... [ 65.218519] cgroup: Unknown subsys name 'net' [ 65.270473] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:40:31 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff888016b09980 RCX=ffffea0000000000 RDX=ffff88800844f780 RSI=0000000000000000 RDI=ffff88800844f780 RBP=ffff888008d7fd38 RSP=ffff888008d7fd10 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=0000000000000128 R12=ffff88800844f780 R13=ffffea00005ac240 R14=ffffffff813782a8 R15=ffff888016b09a00 RIP=ffffffff818098f6 RFL=00000202 [-------] 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 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=00007ffebcba63d8 CR3=000000000da94000 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=30343a3230203032206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3932325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320323639 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=0000000000000001 RCX=ffffffff8100455b RDX=0000000000000045 RSI=0000000000000045 RDI=ffffffff864e7cd4 RBP=ffff888008e57988 RSP=ffff888008e578c0 R8 =0000000000000000 R9 =ffff888008e57970 R10=0000000000038001 R11=0000000000009bea R12=ffff888008e57990 R13=ffff888008e57978 R14=ffff888008e57971 R15=ffff888008e57930 RIP=ffffffff8113077a RFL=00000217 [----APC] 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 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=00007f4f13cd4618 CR3=0000000019e46000 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=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000