[ 45.564028] BUG: Bad rss-counter state mm:00000000433d744e type:MM_FILEPAGES val:33 [ 45.564649] BUG: Bad rss-counter state mm:00000000433d744e type:MM_ANONPAGES val:22 [ OK ] Finished Update UTMP about System Runlevel Changes. [ 45.853435] ================================================================== [ 45.853449] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 45.853486] Read of size 8 at addr ffff88801aa6ea50 by task sshd/221 [ 45.853504] [ 45.853508] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 45.853531] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 45.853543] Call Trace: [ 45.853549] [ 45.853556] dump_stack_lvl+0x91/0xf0 [ 45.853588] print_report+0xcc/0x620 [ 45.853623] ? __virt_addr_valid+0x102/0x340 [ 45.853648] ? vma_interval_tree_remove+0xc75/0xec0 [ 45.853675] ? vma_interval_tree_remove+0xc75/0xec0 [ 45.853702] kasan_report+0xbe/0xf0 [ 45.853737] ? vma_interval_tree_remove+0xc75/0xec0 [ 45.853768] vma_interval_tree_remove+0xc75/0xec0 [ 45.853798] vma_prepare+0xc54/0x11a0 [ 45.853823] __split_vma+0x5af/0x950 [ 45.853849] ? __pfx___split_vma+0x10/0x10 [ 45.853882] ? find_held_lock+0x2c/0x110 [ 45.853918] do_vmi_align_munmap+0x2ba/0x11f0 [ 45.853947] ? lock_is_held_type+0x9f/0x120 [ 45.853975] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 45.854002] ? mtree_range_walk+0x632/0x900 [ 45.854040] ? mas_walk+0x5c7/0x7c0 [ 45.854074] do_vmi_munmap+0x1f1/0x2b0 [ 45.854102] mmap_region+0x1f9/0x2660 [ 45.854130] ? vm_mmap_pgoff+0x15c/0x3a0 [ 45.854159] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 45.854185] ? __pfx_lock_acquire+0x10/0x10 [ 45.854210] ? __pfx_mmap_region+0x10/0x10 [ 45.854239] ? security_mmap_addr+0x7d/0xa0 [ 45.854262] ? get_unmapped_area+0x1f5/0x3f0 [ 45.854287] do_mmap+0x854/0xf00 [ 45.854316] vm_mmap_pgoff+0x1a6/0x3a0 [ 45.854346] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 45.854380] ksys_mmap_pgoff+0x3af/0x500 [ 45.854406] do_syscall_64+0x3f/0x90 [ 45.854436] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 45.854472] RIP: 0033:0x7fd136c4ed82 [ 45.854487] 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 [ 45.854508] RSP: 002b:00007ffe25e25d08 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 45.854529] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fd136c4ed82 [ 45.854544] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fd136088000 [ 45.854558] RBP: 00007fd136088000 R08: 0000000000000009 R09: 0000000000001000 [ 45.854575] R10: 0000000000000812 R11: 0000000000000206 R12: 00005557654cdb20 [ 45.854591] R13: 00007ffe25e25d20 R14: 00007ffe25e25d50 R15: 00007ffe25e260b0 [ 45.854613] [ 45.854619] [ 45.854622] Allocated by task 207: [ 45.854630] kasan_save_stack+0x22/0x50 [ 45.854661] kasan_set_track+0x25/0x30 [ 45.854690] __kasan_slab_alloc+0x59/0x70 [ 45.854722] kmem_cache_alloc+0x16b/0x370 [ 45.854747] vm_area_dup+0x20/0x160 [ 45.854767] __split_vma+0x170/0x950 [ 45.854789] split_vma+0xc6/0x110 [ 45.854812] mprotect_fixup+0x8d2/0xb30 [ 45.854840] do_mprotect_pkey+0x87e/0xd40 [ 45.854869] __x64_sys_mprotect+0x78/0xc0 [ 45.854898] do_syscall_64+0x3f/0x90 [ 45.854926] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 45.854958] [ 45.854961] Freed by task 32: [ 45.854969] kasan_save_stack+0x22/0x50 [ 45.854998] kasan_set_track+0x25/0x30 [ 45.855028] kasan_save_free_info+0x2b/0x50 [ 45.855052] __kasan_slab_free+0x10a/0x190 [ 45.855083] kmem_cache_free+0x10d/0x4d0 [ 45.855109] rcu_core+0x8c8/0x2860 [ 45.855129] __do_softirq+0x1b7/0x7d4 [ 45.855151] [ 45.855154] Last potentially related work creation: [ 45.855159] kasan_save_stack+0x22/0x50 [ 45.855189] __kasan_record_aux_stack+0x8e/0xa0 [ 45.855212] __call_rcu_common.constprop.0+0x6a/0xb90 [ 45.855245] remove_vma+0x139/0x170 [ 45.855263] do_vmi_align_munmap+0xd4a/0x11f0 [ 45.855287] do_vmi_munmap+0x1f1/0x2b0 [ 45.855310] __vm_munmap+0x138/0x3a0 [ 45.855333] __x64_sys_munmap+0x59/0x80 [ 45.855358] do_syscall_64+0x3f/0x90 [ 45.855385] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 45.855418] [ 45.855420] The buggy address belongs to the object at ffff88801aa6e9f8 [ 45.855420] which belongs to the cache vm_area_struct of size 168 [ 45.855436] The buggy address is located 88 bytes inside of [ 45.855436] freed 168-byte region [ffff88801aa6e9f8, ffff88801aa6eaa0) [ 45.855457] [ 45.855461] The buggy address belongs to the physical page: [ 45.855467] page:0000000048a22a8c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1aa6e [ 45.855490] memcg:ffff88801aa5e301 [ 45.855496] flags: 0x100000000000200(slab|node=0|zone=1) [ 45.855513] page_type: 0xffffffff() [ 45.855531] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 45.855551] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801aa5e301 [ 45.855562] page dumped because: kasan: bad access detected [ 45.855570] [ 45.855572] Memory state around the buggy address: [ 45.855581] ffff88801aa6e900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 45.855595] ffff88801aa6e980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa [ 45.855609] >ffff88801aa6ea00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 45.855619] ^ [ 45.855630] ffff88801aa6ea80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 45.855644] ffff88801aa6eb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 45.855654] ================================================================== [ 45.855693] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 47.913061] BUG: Bad rss-counter state mm:0000000023845878 type:MM_FILEPAGES val:33 [ 47.914295] BUG: Bad rss-counter state mm:0000000023845878 type:MM_ANONPAGES val:22 [ 48.301345] BUG: Bad rss-counter state mm:00000000dd8404b1 type:MM_FILEPAGES val:33 [ 48.302446] BUG: Bad rss-counter state mm:00000000dd8404b1 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:59443' (ECDSA) to the list of known hosts. 2023/06/20 05:38:44 fuzzer started 2023/06/20 05:38:45 dialing manager at localhost:44161 2023/06/20 05:38:45 checking machine... 2023/06/20 05:38:45 checking revisions... [ 49.075147] kmemleak: Automatic memory scanning thread ended 2023/06/20 05:38:45 testing simple program... [ 49.123984] cgroup: Unknown subsys name 'net' [ 49.172826] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 05:38:22 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000563aa7cc6b20 RCX=0000563aa7ce3f80 RDX=000000000000000a RSI=00007fffb73783c8 RDI=00007fffb73783c0 RBP=0000000000000001 RSP=00007fffb7378360 R8 =0000563aa7cf2f0a R9 =00007fbf3b430be0 R10=000000000000006f R11=0000000000000246 R12=0000563aa7ce3f80 R13=00007fffb73783c8 R14=00007fbf3ae59b22 R15=00007fbf3ae7e710 RIP=00007fbf3b2e76ea RFL=00000206 [-----P-] CPL=3 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0033 0000000000000000 ffffffff 00a0fb00 DPL=3 CS64 [-RA] SS =002b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007fbf3ae7e900 00000000 00000000 GS =0000 0000000000000000 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=00007fbf3b433650 CR3=000000000d836000 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=23232323232323232323232323232323 XMM01=0000000000000000000000000000ffff XMM02=0000000000000000000000000000ffff XMM03=796e6120776f6c6c6120746f6e206f74 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ff0000ffffffff00ffffffffffffffff XMM08=6120776f6c6c6120746f6e206f740000 XMM09=00000000000000000000000000000000 XMM10=00002020202020200020202020202020 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=00007ffc4b1da898 CR3=000000000e902000 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=2034343a38333a3530203032206e754a XMM01=657463656e6e6f63736944203a5d3932 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3932325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732034343a38333a3530203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000