syzkaller login: [ 74.606628] BUG: Bad rss-counter state mm:000000004c085d89 type:MM_FILEPAGES val:33 [ 74.607854] BUG: Bad rss-counter state mm:000000004c085d89 type:MM_ANONPAGES val:22 [ 74.776415] ================================================================== [ 74.777438] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 74.778585] Read of size 8 at addr ffff88800ede6b38 by task sshd/220 [ 74.779435] [ 74.779676] CPU: 0 PID: 220 Comm: sshd Tainted: G L 6.4.0-rc7-next-20230619 #1 [ 74.780860] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 74.781956] Call Trace: [ 74.782316] [ 74.782639] dump_stack_lvl+0x91/0xf0 [ 74.783187] print_report+0xcc/0x620 [ 74.783729] ? __virt_addr_valid+0x102/0x340 [ 74.784355] ? vma_interval_tree_remove+0xc75/0xec0 [ 74.785059] ? vma_interval_tree_remove+0xc75/0xec0 [ 74.785750] kasan_report+0xbe/0xf0 [ 74.786285] ? vma_interval_tree_remove+0xc75/0xec0 [ 74.786982] vma_interval_tree_remove+0xc75/0xec0 [ 74.787662] vma_prepare+0xc54/0x11a0 [ 74.788209] __split_vma+0x5af/0x950 [ 74.788746] ? __pfx___split_vma+0x10/0x10 [ 74.789345] ? find_held_lock+0x2c/0x110 [ 74.789936] do_vmi_align_munmap+0x2ba/0x11f0 [ 74.790579] ? lock_is_held_type+0x9f/0x120 [ 74.791191] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 74.791896] ? mtree_range_walk+0x632/0x900 [ 74.792527] ? mas_walk+0x5c7/0x7c0 [ 74.793062] do_vmi_munmap+0x1f1/0x2b0 [ 74.793620] mmap_region+0x1f9/0x2660 [ 74.794163] ? vm_mmap_pgoff+0x15c/0x3a0 [ 74.794742] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 74.795539] ? __pfx_lock_acquire+0x10/0x10 [ 74.796149] ? __pfx_mmap_region+0x10/0x10 [ 74.796745] ? security_mmap_addr+0x7d/0xa0 [ 74.797341] ? get_unmapped_area+0x1f5/0x3f0 [ 74.797952] do_mmap+0x854/0xf00 [ 74.798440] vm_mmap_pgoff+0x1a6/0x3a0 [ 74.798998] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 74.799620] ksys_mmap_pgoff+0x3af/0x500 [ 74.800196] do_syscall_64+0x3f/0x90 [ 74.800734] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 74.801462] RIP: 0033:0x7f0aff327d82 [ 74.801976] 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 [ 74.804346] RSP: 002b:00007ffff9d1ba68 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 74.805361] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f0aff327d82 [ 74.806311] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f0afe761000 [ 74.807265] RBP: 00007f0afe761000 R08: 0000000000000009 R09: 0000000000001000 [ 74.808226] R10: 0000000000000812 R11: 0000000000000206 R12: 000056228ae8aec0 [ 74.809174] R13: 00007ffff9d1ba80 R14: 00007ffff9d1bab0 R15: 00007ffff9d1be10 [ 74.810148] [ 74.810479] [ 74.810720] Allocated by task 213: [ 74.811202] kasan_save_stack+0x22/0x50 [ 74.811770] kasan_set_track+0x25/0x30 [ 74.812337] __kasan_slab_alloc+0x59/0x70 [ 74.812929] kmem_cache_alloc+0x16b/0x370 [ 74.813510] vm_area_dup+0x20/0x160 [ 74.814023] __split_vma+0x170/0x950 [ 74.814549] split_vma+0xc6/0x110 [ 74.815042] mprotect_fixup+0x8d2/0xb30 [ 74.815607] do_mprotect_pkey+0x87e/0xd40 [ 74.816200] __x64_sys_mprotect+0x78/0xc0 [ 74.816796] do_syscall_64+0x3f/0x90 [ 74.817329] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 74.818042] [ 74.818281] Freed by task 213: [ 74.818714] kasan_save_stack+0x22/0x50 [ 74.819271] kasan_set_track+0x25/0x30 [ 74.819828] kasan_save_free_info+0x2b/0x50 [ 74.820445] __kasan_slab_free+0x10a/0x190 [ 74.821141] kmem_cache_free+0x10d/0x4d0 [ 74.821684] rcu_core+0x8c8/0x2860 [ 74.822161] __do_softirq+0x1b7/0x7d4 [ 74.822677] [ 74.822911] Last potentially related work creation: [ 74.823535] kasan_save_stack+0x22/0x50 [ 74.824091] __kasan_record_aux_stack+0x8e/0xa0 [ 74.824711] __call_rcu_common.constprop.0+0x6a/0xb90 [ 74.825400] remove_vma+0x139/0x170 [ 74.825897] do_vmi_align_munmap+0xd4a/0x11f0 [ 74.826498] do_vmi_munmap+0x1f1/0x2b0 [ 74.827020] __vm_munmap+0x138/0x3a0 [ 74.827522] __x64_sys_munmap+0x59/0x80 [ 74.828063] do_syscall_64+0x3f/0x90 [ 74.828570] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 74.829262] [ 74.829497] Second to last potentially related work creation: [ 74.830229] kasan_save_stack+0x22/0x50 [ 74.830768] __kasan_record_aux_stack+0x8e/0xa0 [ 74.831383] __call_rcu_common.constprop.0+0x6a/0xb90 [ 74.832101] remove_vma+0x139/0x170 [ 74.832586] do_vmi_align_munmap+0xd4a/0x11f0 [ 74.833187] do_vmi_munmap+0x1f1/0x2b0 [ 74.833709] mmap_region+0x1f9/0x2660 [ 74.834219] do_mmap+0x854/0xf00 [ 74.834680] vm_mmap_pgoff+0x1a6/0x3a0 [ 74.835208] ksys_mmap_pgoff+0x3af/0x500 [ 74.835753] do_syscall_64+0x3f/0x90 [ 74.836273] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 74.836964] [ 74.837194] The buggy address belongs to the object at ffff88800ede6ae0 [ 74.837194] which belongs to the cache vm_area_struct of size 168 [ 74.838792] The buggy address is located 88 bytes inside of [ 74.838792] freed 168-byte region [ffff88800ede6ae0, ffff88800ede6b88) [ 74.840295] [ 74.840527] The buggy address belongs to the physical page: [ 74.841228] page:00000000e8766f95 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xede6 [ 74.842369] memcg:ffff88800c7b2a01 [ 74.842827] flags: 0x100000000000200(slab|node=0|zone=1) [ 74.843509] page_type: 0xffffffff() [ 74.844001] raw: 0100000000000200 ffff88800879fc80 dead000000000100 dead000000000122 [ 74.844981] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800c7b2a01 [ 74.845948] page dumped because: kasan: bad access detected [ 74.846655] [ 74.846884] Memory state around the buggy address: [ 74.847500] ffff88800ede6a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 74.848422] ffff88800ede6a80: 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb [ 74.849327] >ffff88800ede6b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 74.850232] ^ [ 74.850879] ffff88800ede6b80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 74.851793] ffff88800ede6c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 74.852725] ================================================================== [ 74.853793] Disabling lock debugging due to kernel taint [ 76.835891] BUG: Bad rss-counter state mm:000000009cb709cd type:MM_FILEPAGES val:33 [ 76.837058] BUG: Bad rss-counter state mm:000000009cb709cd type:MM_ANONPAGES val:22 [ 77.252820] BUG: Bad rss-counter state mm:0000000075d57133 type:MM_FILEPAGES val:33 [ 77.253708] BUG: Bad rss-counter state mm:0000000075d57133 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:4370' (ECDSA) to the list of known hosts. 2023/06/20 06:47:15 fuzzer started 2023/06/20 06:47:15 dialing manager at localhost:44161 2023/06/20 06:47:15 checking machine... 2023/06/20 06:47:15 checking revisions... [ 78.001816] kmemleak: Automatic memory scanning thread ended 2023/06/20 06:47:15 testing simple program... [ 78.047768] cgroup: Unknown subsys name 'net' [ 78.088422] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 06:46:30 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000000 RCX=0000000000000000 RDX=ffff888015a2d1c0 RSI=ffffffff8386d57e RDI=0000000000000005 RBP=1ffff110018a3f50 RSP=ffff88800c51fa78 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=6873733d6c616e69 R12=ffff888009000000 R13=0000000000000000 R14=ffffffff87f94640 R15=ffff88800c51faa0 RIP=ffffffff81374464 RFL=00000293 [--S-A-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 00007f78f57a5900 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=00007ffc1a9d3000 CR3=000000001ce0e000 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=6720646572637465733a4d41503d706f 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=00007f5a36902ad0 CR3=000000000ba62000 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=2034313a37343a3630203032206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732034313a37343a3630203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000