[ 30.949269] BUG: Bad rss-counter state mm:00000000552559ff type:MM_FILEPAGES val:33 [ 30.950109] BUG: Bad rss-counter state mm:00000000552559ff type:MM_ANONPAGES val:22 [ 31.065251] ================================================================== [ 31.065885] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.066495] Read of size 8 at addr ffff888016c6d140 by task sshd/221 [ 31.067024] [ 31.067164] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.067749] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.068453] Call Trace: [ 31.068667] [ 31.068863] dump_stack_lvl+0x91/0xf0 [ 31.069197] print_report+0xcc/0x620 [ 31.069525] ? __virt_addr_valid+0x102/0x340 [ 31.070072] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.070474] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.070900] kasan_report+0xbe/0xf0 [ 31.071211] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.071614] vma_interval_tree_remove+0xc75/0xec0 [ 31.072023] vma_prepare+0xc54/0x11a0 [ 31.072357] __split_vma+0x5af/0x950 [ 31.072670] ? __pfx___split_vma+0x10/0x10 [ 31.073010] ? find_held_lock+0x2c/0x110 [ 31.073356] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.073767] ? lock_is_held_type+0x9f/0x120 [ 31.074113] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.074513] ? mtree_range_walk+0x632/0x900 [ 31.074898] ? mas_walk+0x5c7/0x7c0 [ 31.075209] do_vmi_munmap+0x1f1/0x2b0 [ 31.075530] mmap_region+0x1f9/0x2660 [ 31.075840] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.076195] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.076663] ? __pfx_lock_acquire+0x10/0x10 [ 31.077020] ? __pfx_mmap_region+0x10/0x10 [ 31.077368] ? security_mmap_addr+0x7d/0xa0 [ 31.077755] ? get_unmapped_area+0x1f5/0x3f0 [ 31.078106] do_mmap+0x854/0xf00 [ 31.078386] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.078712] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.079069] ksys_mmap_pgoff+0x3af/0x500 [ 31.079402] do_syscall_64+0x3f/0x90 [ 31.079742] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.080203] RIP: 0033:0x7f5dbdf0bd82 [ 31.080498] 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 [ 31.081903] RSP: 002b:00007ffd605bfc68 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.082474] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f5dbdf0bd82 [ 31.083016] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f5dbd345000 [ 31.083587] RBP: 00007f5dbd345000 R08: 0000000000000009 R09: 0000000000001000 [ 31.084170] R10: 0000000000000812 R11: 0000000000000206 R12: 000055c436040980 [ 31.084763] R13: 00007ffd605bfc80 R14: 00007ffd605bfcb0 R15: 00007ffd605c0010 [ 31.085316] [ 31.085504] [ 31.085650] Allocated by task 214: [ 31.085931] kasan_save_stack+0x22/0x50 [ 31.086259] kasan_set_track+0x25/0x30 [ 31.086608] __kasan_slab_alloc+0x59/0x70 [ 31.086981] kmem_cache_alloc+0x16b/0x370 [ 31.087398] vm_area_dup+0x20/0x160 [ 31.087757] __split_vma+0x170/0x950 [ 31.088155] split_vma+0xc6/0x110 [ 31.088496] mprotect_fixup+0x8d2/0xb30 [ 31.088864] do_mprotect_pkey+0x87e/0xd40 [ 31.089264] __x64_sys_mprotect+0x78/0xc0 [ 31.089676] do_syscall_64+0x3f/0x90 [ 31.090035] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.090502] [ 31.090667] Freed by task 214: [ 31.090947] kasan_save_stack+0x22/0x50 [ 31.091301] kasan_set_track+0x25/0x30 [ 31.091667] kasan_save_free_info+0x2b/0x50 [ 31.092040] __kasan_slab_free+0x10a/0x190 [ 31.092443] kmem_cache_free+0x10d/0x4d0 [ 31.092796] rcu_core+0x8c8/0x2860 [ 31.093116] __do_softirq+0x1b7/0x7d4 [ 31.093455] [ 31.093607] Last potentially related work creation: [ 31.094007] kasan_save_stack+0x22/0x50 [ 31.094364] __kasan_record_aux_stack+0x8e/0xa0 [ 31.094766] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.095180] remove_vma+0x139/0x170 [ 31.095461] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.095829] do_vmi_munmap+0x1f1/0x2b0 [ 31.096190] __vm_munmap+0x138/0x3a0 [ 31.096514] __x64_sys_munmap+0x59/0x80 [ 31.096856] do_syscall_64+0x3f/0x90 [ 31.097175] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.097660] [ 31.097831] The buggy address belongs to the object at ffff888016c6d0e8 [ 31.097831] which belongs to the cache vm_area_struct of size 168 [ 31.098845] The buggy address is located 88 bytes inside of [ 31.098845] freed 168-byte region [ffff888016c6d0e8, ffff888016c6d190) [ 31.099751] [ 31.099890] The buggy address belongs to the physical page: [ 31.100360] page:000000007e30865b refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16c6d [ 31.101073] memcg:ffff888016cd5a01 [ 31.101351] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.101822] page_type: 0xffffffff() [ 31.102125] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 31.102760] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888016cd5a01 [ 31.103394] page dumped because: kasan: bad access detected [ 31.103818] [ 31.103959] Memory state around the buggy address: [ 31.104369] ffff888016c6d000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.104965] ffff888016c6d080: 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb [ 31.105522] >ffff888016c6d100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.106112] ^ [ 31.106536] ffff888016c6d180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 31.107086] ffff888016c6d200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 31.107637] ================================================================== [ 31.108401] Disabling lock debugging due to kernel taint [ 32.993505] BUG: Bad rss-counter state mm:000000005869fce6 type:MM_FILEPAGES val:33 [ 32.994617] BUG: Bad rss-counter state mm:000000005869fce6 type:MM_ANONPAGES val:22 [ 33.452636] BUG: Bad rss-counter state mm:00000000b7dcca45 type:MM_FILEPAGES val:33 [ 33.453367] BUG: Bad rss-counter state mm:00000000b7dcca45 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:45084' (ECDSA) to the list of known hosts. 2023/06/21 09:52:19 fuzzer started 2023/06/21 09:52:20 dialing manager at localhost:36067 2023/06/21 09:52:20 checking machine... 2023/06/21 09:52:20 checking revisions... [ 33.952495] kmemleak: Automatic memory scanning thread ended 2023/06/21 09:52:20 testing simple program... [ 33.999450] cgroup: Unknown subsys name 'net' [ 34.036022] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 09:52:19 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffff88806ce09a98 RCX=0000000000000002 RDX=1ffff1100d9c1354 RSI=ffff88806ce09f50 RDI=ffff88806ce09aa8 RBP=ffff88806ce09f50 RSP=ffff88806ce099f0 R8 =0000000000000001 R9 =ffff88806ce09ad8 R10=0000000000038001 R11=000000000000fdcc R12=0000000000000008 R13=ffff88806ce02000 R14=ffff88806ce09f50 R15=ffff88806ce09a98 RIP=ffffffff8113045d 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 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=00007fff86bacdc8 CR3=000000000cac8000 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=2039313a32353a3930203132206e754a XMM01=657463656e6e6f63736944203a5d3133 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3133325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732039313a32353a3930203132 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=ffff888015c97c38 RCX=0000000000000000 RDX=1ffff1100174301d RSI=ffffffff81f7587a RDI=ffff88800ba180e8 RBP=ffff88800f30d808 RSP=ffff888015c979d0 R8 =0000000000000005 R9 =0000000000000040 R10=0000000000000010 R11=0000000000000000 R12=0000000000000010 R13=ffff88800ba180e0 R14=1ffff11002b92f3e R15=00000000ffffffea RIP=ffffffff81f75893 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 00007f2add913900 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=00007f2addeca618 CR3=000000001bd82000 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=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