syzkaller login: [ 31.246311] BUG: Bad rss-counter state mm:00000000f272f5ca type:MM_FILEPAGES val:33 [ 31.247616] BUG: Bad rss-counter state mm:00000000f272f5ca type:MM_ANONPAGES val:22 [ 31.423823] ================================================================== [ 31.424828] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.425844] Read of size 8 at addr ffff88800dbb4ed8 by task sshd/220 [ 31.426834] [ 31.427073] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 31.427999] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.429091] Call Trace: [ 31.429440] [ 31.429753] dump_stack_lvl+0x91/0xf0 [ 31.430289] print_report+0xcc/0x620 [ 31.430815] ? __virt_addr_valid+0x102/0x340 [ 31.431407] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.432076] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.432752] kasan_report+0xbe/0xf0 [ 31.433269] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.433944] vma_interval_tree_remove+0xc75/0xec0 [ 31.434594] vma_prepare+0xc54/0x11a0 [ 31.435114] __split_vma+0x5af/0x950 [ 31.435621] ? __pfx___split_vma+0x10/0x10 [ 31.436200] ? find_held_lock+0x2c/0x110 [ 31.436762] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.437374] ? lock_is_held_type+0x9f/0x120 [ 31.437952] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.438610] ? mtree_range_walk+0x632/0x900 [ 31.439203] ? mas_walk+0x5c7/0x7c0 [ 31.439711] do_vmi_munmap+0x1f1/0x2b0 [ 31.440256] mmap_region+0x1f9/0x2660 [ 31.440772] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.441323] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.442088] ? __pfx_lock_acquire+0x10/0x10 [ 31.442661] ? __pfx_mmap_region+0x10/0x10 [ 31.443228] ? security_mmap_addr+0x7d/0xa0 [ 31.443801] ? get_unmapped_area+0x1f5/0x3f0 [ 31.444400] do_mmap+0x854/0xf00 [ 31.444873] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.445408] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.446012] ksys_mmap_pgoff+0x3af/0x500 [ 31.446560] do_syscall_64+0x3f/0x90 [ 31.447076] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.447773] RIP: 0033:0x7fb19ca43d82 [ 31.448275] 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 [ 31.450567] RSP: 002b:00007fff0c0e6e88 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.451548] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fb19ca43d82 [ 31.452470] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fb19be7d000 [ 31.453379] RBP: 00007fb19be7d000 R08: 0000000000000009 R09: 0000000000001000 [ 31.454293] R10: 0000000000000812 R11: 0000000000000206 R12: 00005633bcdaab20 [ 31.455196] R13: 00007fff0c0e6ea0 R14: 00007fff0c0e6ed0 R15: 00007fff0c0e7230 [ 31.456107] [ 31.456426] [ 31.456661] Allocated by task 213: [ 31.457116] kasan_save_stack+0x22/0x50 [ 31.457654] kasan_set_track+0x25/0x30 [ 31.458178] __kasan_slab_alloc+0x59/0x70 [ 31.458734] kmem_cache_alloc+0x16b/0x370 [ 31.459282] vm_area_dup+0x20/0x160 [ 31.459768] __split_vma+0x170/0x950 [ 31.460282] split_vma+0xc6/0x110 [ 31.460756] mprotect_fixup+0x8d2/0xb30 [ 31.461294] do_mprotect_pkey+0x87e/0xd40 [ 31.461843] __x64_sys_mprotect+0x78/0xc0 [ 31.462406] do_syscall_64+0x3f/0x90 [ 31.462908] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.463582] [ 31.463817] Freed by task 210: [ 31.464238] kasan_save_stack+0x22/0x50 [ 31.464774] kasan_set_track+0x25/0x30 [ 31.465292] kasan_save_free_info+0x2b/0x50 [ 31.465892] __kasan_slab_free+0x10a/0x190 [ 31.466477] kmem_cache_free+0x10d/0x4d0 [ 31.467012] rcu_core+0x8c8/0x2860 [ 31.467484] __do_softirq+0x1b7/0x7d4 [ 31.468073] [ 31.468320] Last potentially related work creation: [ 31.468958] kasan_save_stack+0x22/0x50 [ 31.469497] __kasan_record_aux_stack+0x8e/0xa0 [ 31.470111] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.470800] remove_vma+0x139/0x170 [ 31.471290] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.471890] do_vmi_munmap+0x1f1/0x2b0 [ 31.472431] __vm_munmap+0x138/0x3a0 [ 31.472941] __x64_sys_munmap+0x59/0x80 [ 31.473483] do_syscall_64+0x3f/0x90 [ 31.474000] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.474698] [ 31.474932] Second to last potentially related work creation: [ 31.475675] kasan_save_stack+0x22/0x50 [ 31.476219] __kasan_record_aux_stack+0x8e/0xa0 [ 31.476840] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.477532] remove_vma+0x139/0x170 [ 31.478017] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.478610] do_vmi_munmap+0x1f1/0x2b0 [ 31.479134] __vm_munmap+0x138/0x3a0 [ 31.479634] elf_map+0x26f/0x310 [ 31.480108] load_elf_binary+0xd82/0x5030 [ 31.480696] bprm_execve+0x803/0x1940 [ 31.481194] do_execveat_common+0x734/0x8e0 [ 31.481767] __x64_sys_execve+0x93/0xc0 [ 31.482286] do_syscall_64+0x3f/0x90 [ 31.482793] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.483481] [ 31.483707] The buggy address belongs to the object at ffff88800dbb4e80 [ 31.483707] which belongs to the cache vm_area_struct of size 168 [ 31.485281] The buggy address is located 88 bytes inside of [ 31.485281] freed 168-byte region [ffff88800dbb4e80, ffff88800dbb4f28) [ 31.486783] [ 31.487008] The buggy address belongs to the physical page: [ 31.487699] page:00000000492c83e6 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdbb4 [ 31.488874] memcg:ffff88800bf36401 [ 31.489323] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.490005] page_type: 0xffffffff() [ 31.490492] raw: 0100000000000200 ffff88800879fc80 ffffea0000399680 dead000000000002 [ 31.491470] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800bf36401 [ 31.492438] page dumped because: kasan: bad access detected [ 31.493134] [ 31.493364] Memory state around the buggy address: [ 31.493973] ffff88800dbb4d80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 31.494879] ffff88800dbb4e00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 31.495771] >ffff88800dbb4e80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.496686] ^ [ 31.497461] ffff88800dbb4f00: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc [ 31.498368] ffff88800dbb4f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 31.499266] ================================================================== [ 31.500326] Disabling lock debugging due to kernel taint [ 33.914329] BUG: Bad rss-counter state mm:000000001f20f901 type:MM_FILEPAGES val:33 [ 33.915497] BUG: Bad rss-counter state mm:000000001f20f901 type:MM_ANONPAGES val:22 [ 34.392528] BUG: Bad rss-counter state mm:000000000a58a5a0 type:MM_FILEPAGES val:33 [ 34.393538] BUG: Bad rss-counter state mm:000000000a58a5a0 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:1804' (ECDSA) to the list of known hosts. 2023/06/19 15:37:45 fuzzer started 2023/06/19 15:37:45 dialing manager at localhost:44161 2023/06/19 15:37:45 checking machine... 2023/06/19 15:37:45 checking revisions... [ 35.107853] kmemleak: Automatic memory scanning thread ended 2023/06/19 15:37:45 testing simple program... [ 35.157717] cgroup: Unknown subsys name 'net' [ 35.214148] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 15:37:45 Registers: info registers vcpu 0 RAX=ffffffff815ab0d0 RBX=ffff88800caddc00 RCX=0000000000000000 RDX=ffff888014258000 RSI=ffffffff814d4599 RDI=ffffc90000687030 RBP=000000007fff0000 RSP=ffff88800d997de8 R8 =0000000000000004 R9 =000000007fff0000 R10=000000007fff0000 R11=0000000000000000 R12=000000007fff0000 R13=dffffc0000000000 R14=ffff88800d997e30 R15=ffffc90000687000 RIP=ffffffff814d45b3 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 00007fe323e88900 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=00007ffefc83bff8 CR3=00000000141f2000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=2cef84022429713200000000000ae988 XMM05=1319e678c5640f8a0000000000135b70 XMM06=94aac670ef06ff650000000000135ad8 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=ffffea0000367180 RCX=0000000000000100 RDX=ffff88800844f780 RSI=ffffffff811431c2 RDI=0000777f80000000 RBP=0000000000000000 RSP=ffff88806cf09d90 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000008 R11=00000000000b6996 R12=ffffffff81845c80 R13=ffffea0000649900 R14=ffffffff818d9dc6 R15=ffff88800c52ea80 RIP=ffffffff8180c49b RFL=00000282 [--S----] 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 00007fcb474bd900 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=00007ffc5f548000 CR3=000000000efbc000 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=635f6e6f69737365733a4d41503d706f XMM01=6f6c5f6d61702c78756e696c65735f6d XMM02=61702c74696d7265705f6d61702c7469 XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000