[ 28.743356] BUG: Bad rss-counter state mm:000000005859226d type:MM_FILEPAGES val:33 [ 28.744631] BUG: Bad rss-counter state mm:000000005859226d type:MM_ANONPAGES val:22 [ 28.825511] ================================================================== [ 28.826412] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.827360] Read of size 8 at addr ffff88800e0df5c8 by task sshd/219 [ 28.828304] [ 28.828521] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 28.829391] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.830388] Call Trace: [ 28.830702] [ 28.830991] dump_stack_lvl+0x91/0xf0 [ 28.831484] print_report+0xcc/0x620 [ 28.831981] ? __virt_addr_valid+0x102/0x340 [ 28.832538] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.833157] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.833775] kasan_report+0xbe/0xf0 [ 28.834248] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.834869] vma_interval_tree_remove+0xc75/0xec0 [ 28.835468] vma_prepare+0xc54/0x11a0 [ 28.835960] __split_vma+0x5af/0x950 [ 28.836447] ? __pfx___split_vma+0x10/0x10 [ 28.836973] ? find_held_lock+0x2c/0x110 [ 28.837493] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.838054] ? lock_is_held_type+0x9f/0x120 [ 28.838589] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.839192] ? mtree_range_walk+0x632/0x900 [ 28.839767] ? mas_walk+0x5c7/0x7c0 [ 28.840252] do_vmi_munmap+0x1f1/0x2b0 [ 28.840739] mmap_region+0x1f9/0x2660 [ 28.841217] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.841738] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.842476] ? __pfx_lock_acquire+0x10/0x10 [ 28.843023] ? __pfx_mmap_region+0x10/0x10 [ 28.843556] ? security_mmap_addr+0x7d/0xa0 [ 28.844095] ? get_unmapped_area+0x1f5/0x3f0 [ 28.844654] do_mmap+0x854/0xf00 [ 28.845099] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.845599] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.846171] ksys_mmap_pgoff+0x3af/0x500 [ 28.846685] do_syscall_64+0x3f/0x90 [ 28.847167] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.847823] RIP: 0033:0x7fb77f323d82 [ 28.848281] 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 [ 28.850439] RSP: 002b:00007ffc36323238 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.851361] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fb77f323d82 [ 28.852296] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fb77e75d000 [ 28.853178] RBP: 00007fb77e75d000 R08: 0000000000000009 R09: 0000000000001000 [ 28.854057] R10: 0000000000000812 R11: 0000000000000206 R12: 0000560cf4e6db20 [ 28.854941] R13: 00007ffc36323250 R14: 00007ffc36323280 R15: 00007ffc363235e0 [ 28.855840] [ 28.856142] [ 28.856364] Allocated by task 212: [ 28.856807] kasan_save_stack+0x22/0x50 [ 28.857326] kasan_set_track+0x25/0x30 [ 28.857830] __kasan_slab_alloc+0x59/0x70 [ 28.858372] kmem_cache_alloc+0x16b/0x370 [ 28.858903] vm_area_dup+0x20/0x160 [ 28.859370] __split_vma+0x170/0x950 [ 28.859867] split_vma+0xc6/0x110 [ 28.860317] mprotect_fixup+0x8d2/0xb30 [ 28.860836] do_mprotect_pkey+0x87e/0xd40 [ 28.861374] __x64_sys_mprotect+0x78/0xc0 [ 28.861908] do_syscall_64+0x3f/0x90 [ 28.862396] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.863050] [ 28.863273] Freed by task 212: [ 28.863670] kasan_save_stack+0x22/0x50 [ 28.864197] kasan_set_track+0x25/0x30 [ 28.864700] kasan_save_free_info+0x2b/0x50 [ 28.865245] __kasan_slab_free+0x10a/0x190 [ 28.865794] kmem_cache_free+0x10d/0x4d0 [ 28.866319] rcu_core+0x8c8/0x2860 [ 28.866774] __do_softirq+0x1b7/0x7d4 [ 28.867265] [ 28.867489] Last potentially related work creation: [ 28.868107] kasan_save_stack+0x22/0x50 [ 28.868625] __kasan_record_aux_stack+0x8e/0xa0 [ 28.869214] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.869879] remove_vma+0x139/0x170 [ 28.870351] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.870928] do_vmi_munmap+0x1f1/0x2b0 [ 28.871432] __vm_munmap+0x138/0x3a0 [ 28.871932] __x64_sys_munmap+0x59/0x80 [ 28.872448] do_syscall_64+0x3f/0x90 [ 28.872934] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.873596] [ 28.873816] Second to last potentially related work creation: [ 28.874537] kasan_save_stack+0x22/0x50 [ 28.875059] __kasan_record_aux_stack+0x8e/0xa0 [ 28.875657] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.876329] remove_vma+0x139/0x170 [ 28.876796] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.877372] do_vmi_munmap+0x1f1/0x2b0 [ 28.877875] mmap_region+0x1f9/0x2660 [ 28.878374] do_mmap+0x854/0xf00 [ 28.878823] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.879331] ksys_mmap_pgoff+0x3af/0x500 [ 28.879867] do_syscall_64+0x3f/0x90 [ 28.880362] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.881025] [ 28.881247] The buggy address belongs to the object at ffff88800e0df570 [ 28.881247] which belongs to the cache vm_area_struct of size 168 [ 28.882781] The buggy address is located 88 bytes inside of [ 28.882781] freed 168-byte region [ffff88800e0df570, ffff88800e0df618) [ 28.884248] [ 28.884474] The buggy address belongs to the physical page: [ 28.885158] page:000000003387eeba refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe0df [ 28.886285] memcg:ffff888013233e01 [ 28.886725] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 28.887450] page_type: 0xffffffff() [ 28.887936] raw: 0100000000000200 ffff88800879fc80 0000000000000000 dead000000000001 [ 28.888896] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888013233e01 [ 28.889842] page dumped because: kasan: bad access detected [ 28.890533] [ 28.890787] Memory state around the buggy address: [ 28.891385] ffff88800e0df480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 28.892291] ffff88800e0df500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 28.893177] >ffff88800e0df580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.894060] ^ [ 28.894747] ffff88800e0df600: fb fb fb fc fc fc fc fc fc fc fc 00 00 00 00 00 [ 28.895635] ffff88800e0df680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 28.896521] ================================================================== [ 28.897676] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 31.016502] BUG: Bad rss-counter state mm:000000007d0430c7 type:MM_FILEPAGES val:33 [ 31.018075] BUG: Bad rss-counter state mm:000000007d0430c7 type:MM_ANONPAGES val:22 [ 31.493303] BUG: Bad rss-counter state mm:000000005463c582 type:MM_FILEPAGES val:33 [ 31.494485] BUG: Bad rss-counter state mm:000000005463c582 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:25356' (ECDSA) to the list of known hosts. 2023/06/19 22:23:10 fuzzer started 2023/06/19 22:23:10 dialing manager at localhost:44161 2023/06/19 22:23:10 checking machine... 2023/06/19 22:23:10 checking revisions... [ 32.187151] kmemleak: Automatic memory scanning thread ended 2023/06/19 22:23:10 testing simple program... [ 32.237919] cgroup: Unknown subsys name 'net' [ 32.298699] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 22:23:05 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffffffff813ad420 RCX=ffffffff86137501 RDX=1ffff11003064eec RSI=ffffffff8180cd09 RDI=ffff8880183277d0 RBP=ffff8880183277a0 RSP=ffff8880183276f8 R8 =ffffffff86137542 R9 =ffff888018327748 R10=0000000000038001 R11=0000000000020d8a R12=ffff8880183277d0 R13=0000000000000000 R14=ffff888016cab680 R15=0000000000082cc0 RIP=ffffffff813ad42f 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 00007f5e38de7900 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=00007ffc38263000 CR3=000000000ecf2000 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=74696d7265705f6d61703d73726f746e XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 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=00007f27c9d50588 CR3=000000000e7f2000 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=2039303a33323a3232203931206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732039303a33323a3232203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000