syzkaller login: [ 30.672509] BUG: Bad rss-counter state mm:00000000b6b4dfb0 type:MM_FILEPAGES val:33 [ 30.673769] BUG: Bad rss-counter state mm:00000000b6b4dfb0 type:MM_ANONPAGES val:22 [ 30.757659] ================================================================== [ 30.758581] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.759520] Read of size 8 at addr ffff88800ded6228 by task sshd/219 [ 30.760291] [ 30.760511] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.761477] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.762461] Call Trace: [ 30.762803] [ 30.763093] dump_stack_lvl+0x91/0xf0 [ 30.763590] print_report+0xcc/0x620 [ 30.764082] ? __virt_addr_valid+0x102/0x340 [ 30.764643] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.765288] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.765910] kasan_report+0xbe/0xf0 [ 30.766389] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.767020] vma_interval_tree_remove+0xc75/0xec0 [ 30.767620] vma_prepare+0xc54/0x11a0 [ 30.768097] __split_vma+0x5af/0x950 [ 30.768580] ? __pfx___split_vma+0x10/0x10 [ 30.769117] ? find_held_lock+0x2c/0x110 [ 30.769661] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.770232] ? lock_is_held_type+0x9f/0x120 [ 30.770773] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.771387] ? mtree_range_walk+0x632/0x900 [ 30.771941] ? mas_walk+0x5c7/0x7c0 [ 30.772418] do_vmi_munmap+0x1f1/0x2b0 [ 30.772912] mmap_region+0x1f9/0x2660 [ 30.773421] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.773945] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.774667] ? __pfx_lock_acquire+0x10/0x10 [ 30.775208] ? __pfx_mmap_region+0x10/0x10 [ 30.775738] ? security_mmap_addr+0x7d/0xa0 [ 30.776267] ? get_unmapped_area+0x1f5/0x3f0 [ 30.776824] do_mmap+0x854/0xf00 [ 30.777275] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.777777] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.778343] ksys_mmap_pgoff+0x3af/0x500 [ 30.778863] do_syscall_64+0x3f/0x90 [ 30.779344] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.779996] RIP: 0033:0x7f050a6fed82 [ 30.780458] 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 [ 30.782609] RSP: 002b:00007fff9b264cf8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.783521] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f050a6fed82 [ 30.784388] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f0509b38000 [ 30.785247] RBP: 00007f0509b38000 R08: 0000000000000009 R09: 0000000000001000 [ 30.786088] R10: 0000000000000812 R11: 0000000000000206 R12: 000055ecfa148ec0 [ 30.786935] R13: 00007fff9b264d10 R14: 00007fff9b264d40 R15: 00007fff9b2650a0 [ 30.787803] [ 30.788098] [ 30.788313] Allocated by task 212: [ 30.788751] kasan_save_stack+0x22/0x50 [ 30.789265] kasan_set_track+0x25/0x30 [ 30.789767] __kasan_slab_alloc+0x59/0x70 [ 30.790293] kmem_cache_alloc+0x16b/0x370 [ 30.790815] vm_area_dup+0x20/0x160 [ 30.791266] __split_vma+0x170/0x950 [ 30.791744] split_vma+0xc6/0x110 [ 30.792187] mprotect_fixup+0x8d2/0xb30 [ 30.792691] do_mprotect_pkey+0x87e/0xd40 [ 30.793235] __x64_sys_mprotect+0x78/0xc0 [ 30.793756] do_syscall_64+0x3f/0x90 [ 30.794228] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.794880] [ 30.795094] Freed by task 212: [ 30.795494] kasan_save_stack+0x22/0x50 [ 30.795996] kasan_set_track+0x25/0x30 [ 30.796493] kasan_save_free_info+0x2b/0x50 [ 30.797030] __kasan_slab_free+0x10a/0x190 [ 30.797575] kmem_cache_free+0x10d/0x4d0 [ 30.798084] rcu_core+0x8c8/0x2860 [ 30.798524] __do_softirq+0x1b7/0x7d4 [ 30.799010] [ 30.799227] Last potentially related work creation: [ 30.799820] kasan_save_stack+0x22/0x50 [ 30.800328] __kasan_record_aux_stack+0x8e/0xa0 [ 30.800909] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.801578] remove_vma+0x139/0x170 [ 30.802037] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.802601] do_vmi_munmap+0x1f1/0x2b0 [ 30.803093] __vm_munmap+0x138/0x3a0 [ 30.803567] __x64_sys_munmap+0x59/0x80 [ 30.804072] do_syscall_64+0x3f/0x90 [ 30.804544] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.805273] [ 30.805530] The buggy address belongs to the object at ffff88800ded61d0 [ 30.805530] which belongs to the cache vm_area_struct of size 168 [ 30.807117] The buggy address is located 88 bytes inside of [ 30.807117] freed 168-byte region [ffff88800ded61d0, ffff88800ded6278) [ 30.808602] [ 30.808827] The buggy address belongs to the physical page: [ 30.809548] page:00000000ad2a5c2f refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xded6 [ 30.810659] memcg:ffff8880198cc701 [ 30.811090] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.811753] page_type: 0xffffffff() [ 30.812215] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.813184] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff8880198cc701 [ 30.814120] page dumped because: kasan: bad access detected [ 30.814796] [ 30.815014] Memory state around the buggy address: [ 30.815597] ffff88800ded6100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.816495] ffff88800ded6180: 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 30.817362] >ffff88800ded6200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 30.818221] ^ [ 30.818785] ffff88800ded6280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 30.819639] ffff88800ded6300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 30.820488] ================================================================== [ 30.821789] Disabling lock debugging due to kernel taint [ 32.904893] BUG: Bad rss-counter state mm:00000000e10a8c1b type:MM_FILEPAGES val:33 [ 32.906113] BUG: Bad rss-counter state mm:00000000e10a8c1b type:MM_ANONPAGES val:22 [ 33.315507] BUG: Bad rss-counter state mm:000000008972b221 type:MM_FILEPAGES val:33 [ 33.316722] BUG: Bad rss-counter state mm:000000008972b221 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:41180' (ECDSA) to the list of known hosts. 2023/06/21 02:29:05 fuzzer started 2023/06/21 02:29:05 dialing manager at localhost:36067 2023/06/21 02:29:05 checking machine... 2023/06/21 02:29:05 checking revisions... [ 34.017489] kmemleak: Automatic memory scanning thread ended 2023/06/21 02:29:05 testing simple program... [ 34.060717] cgroup: Unknown subsys name 'net' [ 34.106486] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:29:05 Registers: info registers vcpu 0 RAX=1ffffffff0c0aa69 RBX=ffffffff86055348 RCX=ffffffff846000a9 RDX=0000000000000000 RSI=ffffffff864bbb4e RDI=ffffffff86055348 RBP=ffffffff86055348 RSP=ffff8880180679e8 R8 =ffffffff864bbb4e R9 =ffff888018067ae0 R10=0000000000038001 R11=00000000000b6a61 R12=ffffffff8605534c R13=ffffffff86055348 R14=ffffffff86055348 R15=dffffc0000000000 RIP=ffffffff8112fc7f 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 00007f56f8890900 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=00007f56f8e480b0 CR3=000000000f300000 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=ffffffffffffffffffffffff00000000 XMM01=000000000000000000005500746f6f72 XMM02=00000000000000000000000000000000 XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=2f3a746f6f723a303a303a3a746f6f72 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=00007ffe07685ff8 CR3=000000000cb4c000 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=2035303a39323a3230203132206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732034303a39323a3230203132 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000