syzkaller login: [ 31.730738] BUG: Bad rss-counter state mm:000000000ca4aaa0 type:MM_FILEPAGES val:33 [ 31.732119] BUG: Bad rss-counter state mm:000000000ca4aaa0 type:MM_ANONPAGES val:22 [ 31.886010] ================================================================== [ 31.887109] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.888212] Read of size 8 at addr ffff88800e14f880 by task sshd/221 [ 31.889178] [ 31.889401] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 31.890283] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.891291] Call Trace: [ 31.891623] [ 31.891909] dump_stack_lvl+0x91/0xf0 [ 31.892401] print_report+0xcc/0x620 [ 31.892888] ? __virt_addr_valid+0x102/0x340 [ 31.893464] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.894095] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.894732] kasan_report+0xbe/0xf0 [ 31.895210] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.895841] vma_interval_tree_remove+0xc75/0xec0 [ 31.896450] vma_prepare+0xc54/0x11a0 [ 31.896940] __split_vma+0x5af/0x950 [ 31.897436] ? __pfx___split_vma+0x10/0x10 [ 31.897979] ? find_held_lock+0x2c/0x110 [ 31.898512] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.899078] ? lock_is_held_type+0x9f/0x120 [ 31.899619] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.900228] ? mtree_range_walk+0x632/0x900 [ 31.900784] ? mas_walk+0x5c7/0x7c0 [ 31.901271] do_vmi_munmap+0x1f1/0x2b0 [ 31.901768] mmap_region+0x1f9/0x2660 [ 31.902250] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.902783] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.903503] ? __pfx_lock_acquire+0x10/0x10 [ 31.904035] ? __pfx_mmap_region+0x10/0x10 [ 31.904574] ? security_mmap_addr+0x7d/0xa0 [ 31.905137] ? get_unmapped_area+0x1f5/0x3f0 [ 31.905714] do_mmap+0x854/0xf00 [ 31.906163] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.906659] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.907240] ksys_mmap_pgoff+0x3af/0x500 [ 31.907748] do_syscall_64+0x3f/0x90 [ 31.908225] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.908927] RIP: 0033:0x7f9d2bc30d82 [ 31.909405] 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 [ 31.911574] RSP: 002b:00007fff84b85088 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.912491] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f9d2bc30d82 [ 31.913369] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f9d2b06a000 [ 31.914233] RBP: 00007f9d2b06a000 R08: 0000000000000009 R09: 0000000000001000 [ 31.915084] R10: 0000000000000812 R11: 0000000000000206 R12: 000055ccecf7aec0 [ 31.915928] R13: 00007fff84b850a0 R14: 00007fff84b850d0 R15: 00007fff84b85430 [ 31.916787] [ 31.917080] [ 31.917315] Allocated by task 213: [ 31.917749] kasan_save_stack+0x22/0x50 [ 31.918253] kasan_set_track+0x25/0x30 [ 31.918745] __kasan_slab_alloc+0x59/0x70 [ 31.919269] kmem_cache_alloc+0x16b/0x370 [ 31.919784] vm_area_dup+0x20/0x160 [ 31.920247] __split_vma+0x170/0x950 [ 31.920716] split_vma+0xc6/0x110 [ 31.921167] mprotect_fixup+0x8d2/0xb30 [ 31.921672] do_mprotect_pkey+0x87e/0xd40 [ 31.922192] __x64_sys_mprotect+0x78/0xc0 [ 31.922713] do_syscall_64+0x3f/0x90 [ 31.923185] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.923824] [ 31.924038] Freed by task 19: [ 31.924421] kasan_save_stack+0x22/0x50 [ 31.924923] kasan_set_track+0x25/0x30 [ 31.925439] kasan_save_free_info+0x2b/0x50 [ 31.925975] __kasan_slab_free+0x10a/0x190 [ 31.926512] kmem_cache_free+0x10d/0x4d0 [ 31.927020] rcu_core+0x8c8/0x2860 [ 31.927473] __do_softirq+0x1b7/0x7d4 [ 31.927954] [ 31.928174] Last potentially related work creation: [ 31.928764] kasan_save_stack+0x22/0x50 [ 31.929287] __kasan_record_aux_stack+0x8e/0xa0 [ 31.929859] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.930500] remove_vma+0x139/0x170 [ 31.930958] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.931520] do_vmi_munmap+0x1f1/0x2b0 [ 31.932006] __vm_munmap+0x138/0x3a0 [ 31.932473] __x64_sys_munmap+0x59/0x80 [ 31.932973] do_syscall_64+0x3f/0x90 [ 31.933455] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.934094] [ 31.934314] Second to last potentially related work creation: [ 31.935002] kasan_save_stack+0x22/0x50 [ 31.935504] __kasan_record_aux_stack+0x8e/0xa0 [ 31.936078] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.936721] remove_vma+0x139/0x170 [ 31.937189] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.937761] do_vmi_munmap+0x1f1/0x2b0 [ 31.938249] __vm_munmap+0x138/0x3a0 [ 31.938722] elf_map+0x26f/0x310 [ 31.939173] load_elf_binary+0xd82/0x5030 [ 31.939703] bprm_execve+0x803/0x1940 [ 31.940174] do_execveat_common+0x734/0x8e0 [ 31.940704] __x64_sys_execve+0x93/0xc0 [ 31.941203] do_syscall_64+0x3f/0x90 [ 31.941681] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.942321] [ 31.942537] The buggy address belongs to the object at ffff88800e14f828 [ 31.942537] which belongs to the cache vm_area_struct of size 168 [ 31.944017] The buggy address is located 88 bytes inside of [ 31.944017] freed 168-byte region [ffff88800e14f828, ffff88800e14f8d0) [ 31.945437] [ 31.945653] The buggy address belongs to the physical page: [ 31.946319] page:0000000033cdd123 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe14f [ 31.947425] memcg:ffff88800d2b5901 [ 31.947868] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 31.948567] page_type: 0xffffffff() [ 31.949018] raw: 0100000000000200 ffff88800879fc80 ffffea00003bb000 dead000000000005 [ 31.949963] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d2b5901 [ 31.950881] page dumped because: kasan: bad access detected [ 31.951543] [ 31.951758] Memory state around the buggy address: [ 31.952340] ffff88800e14f780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 31.953216] ffff88800e14f800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 31.954072] >ffff88800e14f880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 31.954950] ^ [ 31.955362] ffff88800e14f900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.956226] ffff88800e14f980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa [ 31.957082] ================================================================== [ 31.958081] Disabling lock debugging due to kernel taint [ 33.869707] BUG: Bad rss-counter state mm:0000000061bd232a type:MM_FILEPAGES val:33 [ 33.870710] BUG: Bad rss-counter state mm:0000000061bd232a type:MM_ANONPAGES val:22 [ 34.369424] BUG: Bad rss-counter state mm:0000000076b43382 type:MM_FILEPAGES val:33 [ 34.370735] BUG: Bad rss-counter state mm:0000000076b43382 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:35898' (ECDSA) to the list of known hosts. 2023/06/19 11:57:14 fuzzer started 2023/06/19 11:57:14 dialing manager at localhost:44161 2023/06/19 11:57:14 checking machine... 2023/06/19 11:57:14 checking revisions... [ 34.955098] kmemleak: Automatic memory scanning thread ended 2023/06/19 11:57:14 testing simple program... [ 34.996295] cgroup: Unknown subsys name 'net' [ 35.040190] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 11:57:11 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000000 RCX=0000000000000000 RDX=0000000000000000 RSI=ffffffff83ab4224 RDI=ffff8880166d3a74 RBP=0000000000000000 RSP=ffff88800bbc7500 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=00000a0000000a00 R12=0000000000000000 R13=000000000000004f R14=dffffc0000000000 R15=ffffffff87f94640 RIP=ffffffff814c07e0 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 00007f181affd900 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=00007f181b5b4618 CR3=000000000e71c000 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=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 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=00007ff5f3e7c070 CR3=000000000dc40000 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=2034313a37353a3131203931206e754a XMM01=73732878696e755f6d6170203a5d3033 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3033325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732033313a37353a3131203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000