[ 25.631907] BUG: Bad rss-counter state mm:000000003aecce54 type:MM_FILEPAGES val:33 [ 25.633155] BUG: Bad rss-counter state mm:000000003aecce54 type:MM_ANONPAGES val:22 [ 25.731401] ================================================================== [ 25.732528] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 25.733884] Read of size 8 at addr ffff88800de70058 by task sshd/220 [ 25.734830] [ 25.735099] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 25.736175] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 25.737395] Call Trace: [ 25.737799] [ 25.738155] dump_stack_lvl+0x91/0xf0 [ 25.738603] print_report+0xcc/0x620 [ 25.738864] ? __virt_addr_valid+0x102/0x340 [ 25.739167] ? vma_interval_tree_remove+0xc75/0xec0 [ 25.739505] ? vma_interval_tree_remove+0xc75/0xec0 [ 25.739842] kasan_report+0xbe/0xf0 [ 25.740102] ? vma_interval_tree_remove+0xc75/0xec0 [ 25.740442] vma_interval_tree_remove+0xc75/0xec0 [ 25.740766] vma_prepare+0xc54/0x11a0 [ 25.741026] __split_vma+0x5af/0x950 [ 25.741282] ? __pfx___split_vma+0x10/0x10 [ 25.741603] ? find_held_lock+0x2c/0x110 [ 25.741894] do_vmi_align_munmap+0x2ba/0x11f0 [ 25.742217] ? lock_is_held_type+0x9f/0x120 [ 25.742527] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 25.742879] ? mtree_range_walk+0x632/0x900 [ 25.743195] ? mas_walk+0x5c7/0x7c0 [ 25.743474] do_vmi_munmap+0x1f1/0x2b0 [ 25.743766] mmap_region+0x1f9/0x2660 [ 25.744120] ? vm_mmap_pgoff+0x15c/0x3a0 [ 25.744411] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 25.744963] ? __pfx_lock_acquire+0x10/0x10 [ 25.745271] ? __pfx_mmap_region+0x10/0x10 [ 25.745590] ? security_mmap_addr+0x7d/0xa0 [ 25.745897] ? get_unmapped_area+0x1f5/0x3f0 [ 25.746219] do_mmap+0x854/0xf00 [ 25.746474] vm_mmap_pgoff+0x1a6/0x3a0 [ 25.746771] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 25.747099] ksys_mmap_pgoff+0x3af/0x500 [ 25.747388] do_syscall_64+0x3f/0x90 [ 25.747664] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 25.748048] RIP: 0033:0x7fc8da23fd82 [ 25.748316] 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 [ 25.749593] RSP: 002b:00007ffe59ffcec8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 25.750118] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fc8da23fd82 [ 25.750612] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fc8d9679000 [ 25.751108] RBP: 00007fc8d9679000 R08: 0000000000000009 R09: 0000000000001000 [ 25.751593] R10: 0000000000000812 R11: 0000000000000206 R12: 000055ba87560ec0 [ 25.752090] R13: 00007ffe59ffcee0 R14: 00007ffe59ffcf10 R15: 00007ffe59ffd270 [ 25.752586] [ 25.752752] [ 25.752877] Allocated by task 213: [ 25.753132] kasan_save_stack+0x22/0x50 [ 25.753426] kasan_set_track+0x25/0x30 [ 25.753711] __kasan_slab_alloc+0x59/0x70 [ 25.754013] kmem_cache_alloc+0x16b/0x370 [ 25.754311] vm_area_dup+0x20/0x160 [ 25.754573] __split_vma+0x170/0x950 [ 25.754842] split_vma+0xc6/0x110 [ 25.755097] mprotect_fixup+0x8d2/0xb30 [ 25.755384] do_mprotect_pkey+0x87e/0xd40 [ 25.755680] __x64_sys_mprotect+0x78/0xc0 [ 25.755982] do_syscall_64+0x3f/0x90 [ 25.756254] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 25.756620] [ 25.756743] Freed by task 211: [ 25.756973] kasan_save_stack+0x22/0x50 [ 25.757263] kasan_set_track+0x25/0x30 [ 25.757559] kasan_save_free_info+0x2b/0x50 [ 25.757862] __kasan_slab_free+0x10a/0x190 [ 25.758166] kmem_cache_free+0x10d/0x4d0 [ 25.758458] rcu_core+0x8c8/0x2860 [ 25.758706] __do_softirq+0x1b7/0x7d4 [ 25.758979] [ 25.759102] Last potentially related work creation: [ 25.759453] kasan_save_stack+0x22/0x50 [ 25.759740] __kasan_record_aux_stack+0x8e/0xa0 [ 25.760068] __call_rcu_common.constprop.0+0x6a/0xb90 [ 25.760437] remove_vma+0x139/0x170 [ 25.760700] do_vmi_align_munmap+0xd4a/0x11f0 [ 25.761022] do_vmi_munmap+0x1f1/0x2b0 [ 25.761298] __vm_munmap+0x138/0x3a0 [ 25.761576] __x64_sys_munmap+0x59/0x80 [ 25.761868] do_syscall_64+0x3f/0x90 [ 25.762152] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 25.762518] [ 25.762643] The buggy address belongs to the object at ffff88800de70000 [ 25.762643] which belongs to the cache vm_area_struct of size 168 [ 25.763516] The buggy address is located 88 bytes inside of [ 25.763516] freed 168-byte region [ffff88800de70000, ffff88800de700a8) [ 25.764342] [ 25.764465] The buggy address belongs to the physical page: [ 25.764844] page:000000006a0660ad refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xde70 [ 25.765492] memcg:ffff88800dd03201 [ 25.765740] flags: 0x100000000000200(slab|node=0|zone=1) [ 25.766117] page_type: 0xffffffff() [ 25.766383] raw: 0100000000000200 ffff88800879fc80 dead000000000100 dead000000000122 [ 25.766915] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800dd03201 [ 25.767443] page dumped because: kasan: bad access detected [ 25.767824] [ 25.767951] Memory state around the buggy address: [ 25.768284] ffff88800de6ff00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc [ 25.768784] ffff88800de6ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 25.769283] >ffff88800de70000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 25.769786] ^ [ 25.770216] ffff88800de70080: fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 00 [ 25.770703] ffff88800de70100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 25.771207] ================================================================== [ 25.771760] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 27.792229] BUG: Bad rss-counter state mm:00000000ed9ec69a type:MM_FILEPAGES val:33 [ 27.793413] BUG: Bad rss-counter state mm:00000000ed9ec69a type:MM_ANONPAGES val:22 [ 28.259722] BUG: Bad rss-counter state mm:000000000cae4941 type:MM_FILEPAGES val:33 [ 28.260903] BUG: Bad rss-counter state mm:000000000cae4941 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:21916' (ECDSA) to the list of known hosts. 2023/06/19 12:54:23 fuzzer started 2023/06/19 12:54:23 dialing manager at localhost:44161 2023/06/19 12:54:23 checking machine... 2023/06/19 12:54:23 checking revisions... [ 28.859058] kmemleak: Automatic memory scanning thread ended 2023/06/19 12:54:23 testing simple program... [ 28.904629] cgroup: Unknown subsys name 'net' [ 28.960372] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 12:54:21 Registers: info registers vcpu 0 RAX=ffffffff810bd033 RBX=0000000000000002 RCX=ffffffff86096756 RDX=dffffc0000000000 RSI=ffff88806ce09a90 RDI=1ffff1100d9c135e RBP=ffff88806ce09af0 RSP=ffff88806ce099d8 R8 =ffffffff8609675a R9 =ffff88806ce09ad8 R10=0000000000038001 R11=0000000000006097 R12=ffff88806ce09af8 R13=ffff88806ce09ae0 R14=ffff88806ce09a98 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 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=00007ff706f303a0 CR3=000000000c57c000 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=2032323a34353a3231203931206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732032323a34353a3231203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=0000000000000009 RCX=0000000000000000 RDX=0000000000000001 RSI=0000000000000000 RDI=1ffffffff0ba7a02 RBP=000000000003fda0 RSP=ffff8880168cf7d8 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff85d3bed7 R11=000000000001be2c R12=ffff88807ffdc500 R13=000000000003fda0 R14=000000000001be2c R15=ffff88807ffdc500 RIP=ffffffff816b0a31 RFL=00000056 [---ZAP-] 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 00007f3bbf017900 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=00007fff56f79000 CR3=000000000c5dc000 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=6720646572637465733a4d41503d706f XMM01=652022746f6f72223d74636361207469 XMM02=3d6c616e696d72657420322e322e302e XMM03=3d656d616e74736f682022646873732f XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000