syzkaller login: [ 79.324768] BUG: Bad rss-counter state mm:00000000e0a9e07c type:MM_FILEPAGES val:33 [ 79.326933] BUG: Bad rss-counter state mm:00000000e0a9e07c type:MM_ANONPAGES val:22 [ 79.489974] ================================================================== [ 79.490913] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 79.491850] Read of size 8 at addr ffff88800f26a6b0 by task sshd/222 [ 79.492647] [ 79.492970] CPU: 1 PID: 222 Comm: sshd Tainted: G L 6.4.0-rc7-next-20230619 #1 [ 79.494067] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 79.495048] Call Trace: [ 79.495368] [ 79.495679] dump_stack_lvl+0x91/0xf0 [ 79.496180] print_report+0xcc/0x620 [ 79.496679] ? __virt_addr_valid+0x102/0x340 [ 79.497228] ? vma_interval_tree_remove+0xc75/0xec0 [ 79.497851] ? vma_interval_tree_remove+0xc75/0xec0 [ 79.498469] kasan_report+0xbe/0xf0 [ 79.498951] ? vma_interval_tree_remove+0xc75/0xec0 [ 79.499569] vma_interval_tree_remove+0xc75/0xec0 [ 79.500175] vma_prepare+0xc54/0x11a0 [ 79.500677] __split_vma+0x5af/0x950 [ 79.501150] ? __pfx___split_vma+0x10/0x10 [ 79.501679] ? find_held_lock+0x2c/0x110 [ 79.502205] do_vmi_align_munmap+0x2ba/0x11f0 [ 79.502779] ? lock_is_held_type+0x9f/0x120 [ 79.503324] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 79.503939] ? mtree_range_walk+0x632/0x900 [ 79.504503] ? mas_walk+0x5c7/0x7c0 [ 79.504980] do_vmi_munmap+0x1f1/0x2b0 [ 79.505472] mmap_region+0x1f9/0x2660 [ 79.505954] ? vm_mmap_pgoff+0x15c/0x3a0 [ 79.506472] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 79.507185] ? __pfx_lock_acquire+0x10/0x10 [ 79.507721] ? __pfx_mmap_region+0x10/0x10 [ 79.508250] ? security_mmap_addr+0x7d/0xa0 [ 79.508796] ? get_unmapped_area+0x1f5/0x3f0 [ 79.509341] do_mmap+0x854/0xf00 [ 79.509781] vm_mmap_pgoff+0x1a6/0x3a0 [ 79.510284] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 79.510849] ksys_mmap_pgoff+0x3af/0x500 [ 79.511357] do_syscall_64+0x3f/0x90 [ 79.511837] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 79.512501] RIP: 0033:0x7fd21b485d82 [ 79.512969] 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 [ 79.515102] RSP: 002b:00007ffd059eff88 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 79.516014] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fd21b485d82 [ 79.516886] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fd21a8bf000 [ 79.517740] RBP: 00007fd21a8bf000 R08: 0000000000000009 R09: 0000000000001000 [ 79.518595] R10: 0000000000000812 R11: 0000000000000206 R12: 0000558ce6d7aec0 [ 79.519437] R13: 00007ffd059effa0 R14: 00007ffd059effd0 R15: 00007ffd059f0330 [ 79.520318] [ 79.520615] [ 79.520832] Allocated by task 215: [ 79.521266] kasan_save_stack+0x22/0x50 [ 79.521773] kasan_set_track+0x25/0x30 [ 79.522270] __kasan_slab_alloc+0x59/0x70 [ 79.522797] kmem_cache_alloc+0x16b/0x370 [ 79.523319] vm_area_dup+0x20/0x160 [ 79.523783] __split_vma+0x170/0x950 [ 79.524256] split_vma+0xc6/0x110 [ 79.524710] mprotect_fixup+0x8d2/0xb30 [ 79.525236] do_mprotect_pkey+0x87e/0xd40 [ 79.525778] __x64_sys_mprotect+0x78/0xc0 [ 79.526310] do_syscall_64+0x3f/0x90 [ 79.526790] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 79.527452] [ 79.527672] Freed by task 211: [ 79.528079] kasan_save_stack+0x22/0x50 [ 79.528600] kasan_set_track+0x25/0x30 [ 79.529115] kasan_save_free_info+0x2b/0x50 [ 79.529669] __kasan_slab_free+0x10a/0x190 [ 79.530217] kmem_cache_free+0x10d/0x4d0 [ 79.530735] rcu_core+0x8c8/0x2860 [ 79.531178] __do_softirq+0x1b7/0x7d4 [ 79.531667] [ 79.531883] Last potentially related work creation: [ 79.532490] kasan_save_stack+0x22/0x50 [ 79.532995] __kasan_record_aux_stack+0x8e/0xa0 [ 79.533569] __call_rcu_common.constprop.0+0x6a/0xb90 [ 79.534214] remove_vma+0x139/0x170 [ 79.534743] do_vmi_align_munmap+0xd4a/0x11f0 [ 79.535303] do_vmi_munmap+0x1f1/0x2b0 [ 79.535792] __vm_munmap+0x138/0x3a0 [ 79.536259] __x64_sys_munmap+0x59/0x80 [ 79.536771] do_syscall_64+0x3f/0x90 [ 79.537247] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 79.537892] [ 79.538105] The buggy address belongs to the object at ffff88800f26a658 [ 79.538105] which belongs to the cache vm_area_struct of size 168 [ 79.539592] The buggy address is located 88 bytes inside of [ 79.539592] freed 168-byte region [ffff88800f26a658, ffff88800f26a700) [ 79.541026] [ 79.541243] The buggy address belongs to the physical page: [ 79.541913] page:00000000f3f28529 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf26a [ 79.542992] memcg:ffff88800e405901 [ 79.543423] flags: 0x100000000000200(slab|node=0|zone=1) [ 79.544064] page_type: 0xffffffff() [ 79.544522] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 79.545446] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e405901 [ 79.546351] page dumped because: kasan: bad access detected [ 79.547019] [ 79.547233] Memory state around the buggy address: [ 79.547819] ffff88800f26a580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 79.548678] ffff88800f26a600: 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb [ 79.549531] >ffff88800f26a680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 79.550389] ^ [ 79.550972] ffff88800f26a700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 79.551833] ffff88800f26a780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 79.552713] ================================================================== [ 79.553655] Disabling lock debugging due to kernel taint [ 82.245394] BUG: Bad rss-counter state mm:000000002e08b7d5 type:MM_FILEPAGES val:33 [ 82.246370] BUG: Bad rss-counter state mm:000000002e08b7d5 type:MM_ANONPAGES val:22 [ 82.755327] BUG: Bad rss-counter state mm:00000000f1e4c02e type:MM_FILEPAGES val:33 [ 82.756321] BUG: Bad rss-counter state mm:00000000f1e4c02e type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:61716' (ECDSA) to the list of known hosts. 2023/06/19 14:35:27 fuzzer started 2023/06/19 14:35:27 dialing manager at localhost:44161 2023/06/19 14:35:27 checking machine... 2023/06/19 14:35:27 checking revisions... [ 83.499399] kmemleak: Automatic memory scanning thread ended 2023/06/19 14:35:27 testing simple program... [ 83.546969] cgroup: Unknown subsys name 'net' [ 83.586770] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 14:34:38 Registers: info registers vcpu 0 RAX=0000000080010001 RBX=0000000000000000 RCX=0000000000000000 RDX=ffffffff8542a6c0 RSI=ffffffff813fa194 RDI=000000133c3cdbc0 RBP=000000133c3cdbc0 RSP=ffff88806ce09f10 R8 =0000000000000000 R9 =ffffed100d9c5728 R10=ffff88806ce2b943 R11=ffff88806ce09ff8 R12=0000000000000046 R13=ffff88806ce2b98c R14=0000000000000000 R15=ffff88806ce2b940 RIP=ffffffff814c0800 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 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=00007f0de25933a0 CR3=000000000ed28000 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=2036323a35333a3431203931206e754a XMM01=73732878696e755f6d6170203a5d3133 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3133325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732036323a35333a3431203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=1ffff110012f16f7 RBX=ffff88800978b788 RCX=ffffffff812e00e5 RDX=0000000000000000 RSI=0000000000000000 RDI=ffff88800978b7b8 RBP=ffff88800f13d170 RSP=ffff88800ef6f978 R8 =0000000000000001 R9 =ffffed1001dedf23 R10=0000000000000003 R11=0000000000110000 R12=dffffc0000000000 R13=ffff88800f075700 R14=ffffffff81802eb3 R15=ffff88800efdad98 RIP=ffffffff81846362 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 00007f8ee046a900 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=00007ffe67fe8000 CR3=000000000fcec000 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=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