syzkaller login: [ 32.753533] BUG: Bad rss-counter state mm:0000000053d67cb9 type:MM_FILEPAGES val:33 [ 32.755515] BUG: Bad rss-counter state mm:0000000053d67cb9 type:MM_ANONPAGES val:22 [ 32.933361] ================================================================== [ 32.934449] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 32.935591] Read of size 8 at addr ffff88800e21fb38 by task sshd/220 [ 32.936477] [ 32.936708] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 32.937575] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 32.938539] Call Trace: [ 32.938871] [ 32.939157] dump_stack_lvl+0x91/0xf0 [ 32.939643] print_report+0xcc/0x620 [ 32.940121] ? __virt_addr_valid+0x102/0x340 [ 32.940674] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.941291] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.941916] kasan_report+0xbe/0xf0 [ 32.942412] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.943069] vma_interval_tree_remove+0xc75/0xec0 [ 32.943692] vma_prepare+0xc54/0x11a0 [ 32.944194] __split_vma+0x5af/0x950 [ 32.944681] ? __pfx___split_vma+0x10/0x10 [ 32.945228] ? find_held_lock+0x2c/0x110 [ 32.945773] do_vmi_align_munmap+0x2ba/0x11f0 [ 32.946351] ? lock_is_held_type+0x9f/0x120 [ 32.946930] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 32.947565] ? mtree_range_walk+0x632/0x900 [ 32.948141] ? mas_walk+0x5c7/0x7c0 [ 32.948637] do_vmi_munmap+0x1f1/0x2b0 [ 32.949149] mmap_region+0x1f9/0x2660 [ 32.949656] ? vm_mmap_pgoff+0x15c/0x3a0 [ 32.950182] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 32.950932] ? __pfx_lock_acquire+0x10/0x10 [ 32.951487] ? __pfx_mmap_region+0x10/0x10 [ 32.952033] ? security_mmap_addr+0x7d/0xa0 [ 32.952587] ? get_unmapped_area+0x1f5/0x3f0 [ 32.953166] do_mmap+0x854/0xf00 [ 32.953622] vm_mmap_pgoff+0x1a6/0x3a0 [ 32.954136] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 32.954726] ksys_mmap_pgoff+0x3af/0x500 [ 32.955248] do_syscall_64+0x3f/0x90 [ 32.955747] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.956415] RIP: 0033:0x7fcf9675ed82 [ 32.956890] 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 [ 32.959131] RSP: 002b:00007ffc0df92328 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 32.960086] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fcf9675ed82 [ 32.960980] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fcf95b98000 [ 32.961866] RBP: 00007fcf95b98000 R08: 0000000000000009 R09: 0000000000001000 [ 32.962759] R10: 0000000000000812 R11: 0000000000000206 R12: 00005587c143ed90 [ 32.963645] R13: 00007ffc0df92340 R14: 00007ffc0df92370 R15: 00007ffc0df926d0 [ 32.964532] [ 32.964839] [ 32.965061] Allocated by task 213: [ 32.965507] kasan_save_stack+0x22/0x50 [ 32.966033] kasan_set_track+0x25/0x30 [ 32.966542] __kasan_slab_alloc+0x59/0x70 [ 32.967106] kmem_cache_alloc+0x16b/0x370 [ 32.967649] vm_area_dup+0x20/0x160 [ 32.968119] __split_vma+0x170/0x950 [ 32.968603] split_vma+0xc6/0x110 [ 32.969062] mprotect_fixup+0x8d2/0xb30 [ 32.969584] do_mprotect_pkey+0x87e/0xd40 [ 32.970127] __x64_sys_mprotect+0x78/0xc0 [ 32.970675] do_syscall_64+0x3f/0x90 [ 32.971171] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.971847] [ 32.972071] Freed by task 203: [ 32.972477] kasan_save_stack+0x22/0x50 [ 32.972994] kasan_set_track+0x25/0x30 [ 32.973507] kasan_save_free_info+0x2b/0x50 [ 32.974060] __kasan_slab_free+0x10a/0x190 [ 32.974624] kmem_cache_free+0x10d/0x4d0 [ 32.975153] rcu_core+0x8c8/0x2860 [ 32.975618] __do_softirq+0x1b7/0x7d4 [ 32.976116] [ 32.976342] Last potentially related work creation: [ 32.976951] kasan_save_stack+0x22/0x50 [ 32.977475] __kasan_record_aux_stack+0x8e/0xa0 [ 32.978068] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.978748] remove_vma+0x139/0x170 [ 32.979225] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.979802] do_vmi_munmap+0x1f1/0x2b0 [ 32.980311] __vm_munmap+0x138/0x3a0 [ 32.980792] __x64_sys_munmap+0x59/0x80 [ 32.981305] do_syscall_64+0x3f/0x90 [ 32.981797] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.982465] [ 32.982697] Second to last potentially related work creation: [ 32.983418] kasan_save_stack+0x22/0x50 [ 32.983945] __kasan_record_aux_stack+0x8e/0xa0 [ 32.984551] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.985214] remove_vma+0x139/0x170 [ 32.985695] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.986275] do_vmi_munmap+0x1f1/0x2b0 [ 32.986787] mmap_region+0x1f9/0x2660 [ 32.987279] do_mmap+0x854/0xf00 [ 32.987734] vm_mmap_pgoff+0x1a6/0x3a0 [ 32.988238] ksys_mmap_pgoff+0x3af/0x500 [ 32.988760] do_syscall_64+0x3f/0x90 [ 32.989252] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.989925] [ 32.990146] The buggy address belongs to the object at ffff88800e21fae0 [ 32.990146] which belongs to the cache vm_area_struct of size 168 [ 32.991697] The buggy address is located 88 bytes inside of [ 32.991697] freed 168-byte region [ffff88800e21fae0, ffff88800e21fb88) [ 32.993170] [ 32.993393] The buggy address belongs to the physical page: [ 32.994082] page:00000000ad7e8a9d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe21f [ 32.995214] memcg:ffff88800e0a4001 [ 32.995666] flags: 0x100000000000200(slab|node=0|zone=1) [ 32.996344] page_type: 0xffffffff() [ 32.996815] raw: 0100000000000200 ffff88800879fc80 ffffea0000356cc0 dead000000000004 [ 32.997780] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e0a4001 [ 32.998742] page dumped because: kasan: bad access detected [ 32.999424] [ 32.999645] Memory state around the buggy address: [ 33.000253] ffff88800e21fa00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 33.001142] ffff88800e21fa80: 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb [ 33.002048] >ffff88800e21fb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.002948] ^ [ 33.003583] ffff88800e21fb80: fb fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 [ 33.004475] ffff88800e21fc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc [ 33.005359] ================================================================== [ 33.006387] Disabling lock debugging due to kernel taint [ 35.312126] BUG: Bad rss-counter state mm:0000000060e5c12b type:MM_FILEPAGES val:33 [ 35.313100] BUG: Bad rss-counter state mm:0000000060e5c12b type:MM_ANONPAGES val:22 [ 35.701453] BUG: Bad rss-counter state mm:00000000fe456131 type:MM_FILEPAGES val:33 [ 35.702424] BUG: Bad rss-counter state mm:00000000fe456131 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:64032' (ECDSA) to the list of known hosts. 2023/06/20 04:46:40 fuzzer started 2023/06/20 04:46:40 dialing manager at localhost:44161 2023/06/20 04:46:40 checking machine... 2023/06/20 04:46:40 checking revisions... [ 36.414297] kmemleak: Automatic memory scanning thread ended 2023/06/20 04:46:40 testing simple program... [ 36.524542] cgroup: Unknown subsys name 'net' [ 36.576779] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 04:46:38 Registers: info registers vcpu 0 RAX=ffffffff8180c522 RBX=0000000000000002 RCX=ffffffff860d68f6 RDX=dffffc0000000000 RSI=ffff88806ce09bc8 RDI=1ffff1100d9c135e RBP=ffff88806ce09af0 RSP=ffff88806ce09a28 R8 =ffffffff860d68fa R9 =ffff88806ce09ad8 R10=0000000000038001 R11=0000000000010b7e R12=ffff88806ce09af8 R13=ffff88806ce09ae0 R14=ffff88806ce09bd0 R15=ffff88806ce09a98 RIP=ffffffff8113106f RFL=00000246 [---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 00007f8a9d106900 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=00007f8a9d6be0b0 CR3=000000000ea16000 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=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=ffffffff856529e0 RCX=0000000000000000 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3bed0 RBP=00007fc118aa3c64 RSP=ffff888014777938 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=00000000000b6996 R12=00007fc118aa3c64 R13=0000000000000000 R14=ffff888016a79b40 R15=dffffc0000000000 RIP=ffffffff814c8411 RFL=00000286 [--S--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 00007fc1181ea900 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=00007fc1175d8570 CR3=00000000144d6000 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=2039333a36343a3430203032206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732039333a36343a3430203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000