syzkaller login: [ 31.455637] BUG: Bad rss-counter state mm:000000002f5f9f16 type:MM_FILEPAGES val:33 [ 31.457803] BUG: Bad rss-counter state mm:000000002f5f9f16 type:MM_ANONPAGES val:22 [ 31.642449] ================================================================== [ 31.643445] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.644478] Read of size 8 at addr ffff888009a35d08 by task sshd/219 [ 31.645675] [ 31.645971] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.646940] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.648057] Call Trace: [ 31.648412] [ 31.648729] dump_stack_lvl+0x91/0xf0 [ 31.649326] print_report+0xcc/0x620 [ 31.649859] ? __virt_addr_valid+0x102/0x340 [ 31.650463] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.651127] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.651793] kasan_report+0xbe/0xf0 [ 31.652322] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.653022] vma_interval_tree_remove+0xc75/0xec0 [ 31.653664] vma_prepare+0xc54/0x11a0 [ 31.654194] __split_vma+0x5af/0x950 [ 31.654707] ? __pfx___split_vma+0x10/0x10 [ 31.655282] ? find_held_lock+0x2c/0x110 [ 31.655841] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.656459] ? lock_is_held_type+0x9f/0x120 [ 31.657075] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.657733] ? mtree_range_walk+0x632/0x900 [ 31.658351] ? mas_walk+0x5c7/0x7c0 [ 31.658882] do_vmi_munmap+0x1f1/0x2b0 [ 31.659433] mmap_region+0x1f9/0x2660 [ 31.659978] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.660545] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.661384] ? __pfx_lock_acquire+0x10/0x10 [ 31.661999] ? __pfx_mmap_region+0x10/0x10 [ 31.662581] ? security_mmap_addr+0x7d/0xa0 [ 31.663180] ? get_unmapped_area+0x1f5/0x3f0 [ 31.663796] do_mmap+0x854/0xf00 [ 31.664296] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.664850] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.665505] ksys_mmap_pgoff+0x3af/0x500 [ 31.666086] do_syscall_64+0x3f/0x90 [ 31.666618] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.667342] RIP: 0033:0x7f33bc4f6d82 [ 31.667848] 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 [ 31.670208] RSP: 002b:00007ffc883ec258 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.671199] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f33bc4f6d82 [ 31.672120] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f33bb930000 [ 31.673070] RBP: 00007f33bb930000 R08: 0000000000000009 R09: 0000000000001000 [ 31.673986] R10: 0000000000000812 R11: 0000000000000206 R12: 0000555ded337f70 [ 31.674896] R13: 00007ffc883ec270 R14: 00007ffc883ec2a0 R15: 00007ffc883ec600 [ 31.675822] [ 31.676150] [ 31.676379] Allocated by task 212: [ 31.676833] kasan_save_stack+0x22/0x50 [ 31.677410] kasan_set_track+0x25/0x30 [ 31.677952] __kasan_slab_alloc+0x59/0x70 [ 31.678524] kmem_cache_alloc+0x16b/0x370 [ 31.679092] vm_area_dup+0x20/0x160 [ 31.679579] __split_vma+0x170/0x950 [ 31.680099] split_vma+0xc6/0x110 [ 31.680570] mprotect_fixup+0x8d2/0xb30 [ 31.681141] do_mprotect_pkey+0x87e/0xd40 [ 31.681704] __x64_sys_mprotect+0x78/0xc0 [ 31.682278] do_syscall_64+0x3f/0x90 [ 31.682792] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.683492] [ 31.683726] Freed by task 212: [ 31.684157] kasan_save_stack+0x22/0x50 [ 31.684691] kasan_set_track+0x25/0x30 [ 31.685267] kasan_save_free_info+0x2b/0x50 [ 31.685845] __kasan_slab_free+0x10a/0x190 [ 31.686590] kmem_cache_free+0x10d/0x4d0 [ 31.687153] rcu_core+0x8c8/0x2860 [ 31.687637] __do_softirq+0x1b7/0x7d4 [ 31.688172] [ 31.688413] Last potentially related work creation: [ 31.689112] kasan_save_stack+0x22/0x50 [ 31.689675] __kasan_record_aux_stack+0x8e/0xa0 [ 31.690319] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.691043] remove_vma+0x139/0x170 [ 31.691539] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.692169] do_vmi_munmap+0x1f1/0x2b0 [ 31.692691] __vm_munmap+0x138/0x3a0 [ 31.693228] __x64_sys_munmap+0x59/0x80 [ 31.693758] do_syscall_64+0x3f/0x90 [ 31.694284] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.694999] [ 31.695233] Second to last potentially related work creation: [ 31.695982] kasan_save_stack+0x22/0x50 [ 31.696523] __kasan_record_aux_stack+0x8e/0xa0 [ 31.697183] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.697895] remove_vma+0x139/0x170 [ 31.698411] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.699045] do_vmi_munmap+0x1f1/0x2b0 [ 31.699585] __vm_munmap+0x138/0x3a0 [ 31.700115] elf_map+0x26f/0x310 [ 31.700598] load_elf_binary+0x3417/0x5030 [ 31.701219] bprm_execve+0x803/0x1940 [ 31.701737] do_execveat_common+0x734/0x8e0 [ 31.702334] __x64_sys_execve+0x93/0xc0 [ 31.702873] do_syscall_64+0x3f/0x90 [ 31.703406] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.704123] [ 31.704357] The buggy address belongs to the object at ffff888009a35cb0 [ 31.704357] which belongs to the cache vm_area_struct of size 168 [ 31.706029] The buggy address is located 88 bytes inside of [ 31.706029] freed 168-byte region [ffff888009a35cb0, ffff888009a35d58) [ 31.707550] [ 31.707785] The buggy address belongs to the physical page: [ 31.708516] page:00000000eeed4307 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9a35 [ 31.709688] memcg:ffff88801451ba01 [ 31.710151] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.710824] page_type: 0xffffffff() [ 31.711314] raw: 0100000000000200 ffff8880087a0c80 ffffea0000356cc0 000000000000000c [ 31.712322] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801451ba01 [ 31.713330] page dumped because: kasan: bad access detected [ 31.714059] [ 31.714295] Memory state around the buggy address: [ 31.714936] ffff888009a35c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 31.715859] ffff888009a35c80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 31.716785] >ffff888009a35d00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 31.717748] ^ [ 31.718241] ffff888009a35d80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 31.719192] ffff888009a35e00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 31.720120] ================================================================== [ 31.721313] Disabling lock debugging due to kernel taint [ 33.730965] BUG: Bad rss-counter state mm:00000000028e9c1e type:MM_FILEPAGES val:33 [ 33.732127] BUG: Bad rss-counter state mm:00000000028e9c1e type:MM_ANONPAGES val:22 [ 34.245227] BUG: Bad rss-counter state mm:00000000250c9731 type:MM_FILEPAGES val:33 [ 34.246243] BUG: Bad rss-counter state mm:00000000250c9731 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:6005' (ECDSA) to the list of known hosts. 2023/06/21 08:45:55 fuzzer started 2023/06/21 08:45:56 dialing manager at localhost:36067 2023/06/21 08:45:56 checking machine... 2023/06/21 08:45:56 checking revisions... [ 34.999075] kmemleak: Automatic memory scanning thread ended 2023/06/21 08:45:56 testing simple program... [ 35.049346] cgroup: Unknown subsys name 'net' [ 35.090186] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 08:45:55 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8451250e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=0000000000000001 R12=ffffffff85d3d350 R13=1ffffffff0a80fc7 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 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=00007ffe42f0e798 CR3=0000000005482000 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=00000000000000000000000000000000 XMM01=00007f6a7a400510000056182e831790 XMM02=6f6974707972636e6561737268746977 XMM03=00000000000000000000000000777074 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffff00ffffff00ffffff00ff XMM08=00002000000000202020002020200000 XMM09=ffffffffffff00ffffff00ffffff00ff XMM10=00002000000000202020002020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=0000000000000000 RCX=0000000000000000 RDX=ffff888016b551c0 RSI=ffffffff814c857a RDI=0000000000000005 RBP=0000000000000000 RSP=ffff88801032f3d0 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=00000000000b6a61 R12=0000000000000000 R13=0000000000000000 R14=ffffffff85652d08 R15=ffff888015db0118 RIP=ffffffff813744ba 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 00007fd7612f0900 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=00007ff423e7c650 CR3=000000000caa2000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=efaff843b74511a100000000000ae988 XMM05=2f55f8cd4b6401700000000000134598 XMM06=806171799158d9670000000000133388 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000