[ OK ] Finished Remove Stale Onli…ext4 Metadata Check Snapshots. [ OK ] Reached target Graphical Interface. [ 115.584761] BUG: Bad rss-counter state mm:000000007a57eeca type:MM_FILEPAGES val:33 [ 115.585909] BUG: Bad rss-counter state mm:000000007a57eeca type:MM_ANONPAGES val:22 Starting Update UTMP about System Runlevel Changes... [ 115.713022] ================================================================== [ 115.713721] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 115.714437] Read of size 8 at addr ffff88800e231140 by task sshd/219 [ 115.715008] [ 115.715173] CPU: 1 PID: 219 Comm: sshd Tainted: G L 6.4.0-rc7-next-20230619 #1 [ 115.715939] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 115.716667] Call Trace: [ 115.716918] [ 115.717130] dump_stack_lvl+0x91/0xf0 [ 115.717501] print_report+0xcc/0x620 [ 115.718042] ? __virt_addr_valid+0x102/0x340 [ 115.718461] ? vma_interval_tree_remove+0xc75/0xec0 [ 115.718924] ? vma_interval_tree_remove+0xc75/0xec0 [ 115.719387] kasan_report+0xbe/0xf0 [ 115.719745] ? vma_interval_tree_remove+0xc75/0xec0 [ 115.720219] vma_interval_tree_remove+0xc75/0xec0 [ 115.720671] vma_prepare+0xc54/0x11a0 [ 115.721058] __split_vma+0x5af/0x950 [ 115.721410] ? __pfx___split_vma+0x10/0x10 [ 115.721785] ? find_held_lock+0x2c/0x110 [ 115.722082] do_vmi_align_munmap+0x2ba/0x11f0 [ 115.722401] ? lock_is_held_type+0x9f/0x120 [ 115.722716] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 115.723065] ? mtree_range_walk+0x632/0x900 [ 115.723384] ? mas_walk+0x5c7/0x7c0 [ 115.723654] do_vmi_munmap+0x1f1/0x2b0 [ 115.723943] mmap_region+0x1f9/0x2660 [ 115.724220] ? vm_mmap_pgoff+0x15c/0x3a0 [ 115.724525] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 115.724961] ? __pfx_lock_acquire+0x10/0x10 [ 115.725276] ? __pfx_mmap_region+0x10/0x10 [ 115.725586] ? security_mmap_addr+0x7d/0xa0 [ 115.725902] ? get_unmapped_area+0x1f5/0x3f0 [ 115.726221] do_mmap+0x854/0xf00 [ 115.726473] vm_mmap_pgoff+0x1a6/0x3a0 [ 115.726762] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 115.727091] ksys_mmap_pgoff+0x3af/0x500 [ 115.727385] do_syscall_64+0x3f/0x90 [ 115.727662] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 115.728041] RIP: 0033:0x7f72a0ee2d82 [ 115.728310] 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 [ 115.729554] RSP: 002b:00007ffd40337018 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 115.730077] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f72a0ee2d82 [ 115.730577] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f72a031c000 [ 115.731068] RBP: 00007f72a031c000 R08: 0000000000000009 R09: 0000000000001000 [ 115.731559] R10: 0000000000000812 R11: 0000000000000206 R12: 00005642bc62eec0 [ 115.732050] R13: 00007ffd40337030 R14: 00007ffd40337060 R15: 00007ffd403373c0 [ 115.732557] [ 115.732727] [ 115.732848] Allocated by task 204: [ 115.733114] kasan_save_stack+0x22/0x50 [ 115.733410] kasan_set_track+0x25/0x30 [ 115.733696] __kasan_slab_alloc+0x59/0x70 [ 115.734000] kmem_cache_alloc+0x16b/0x370 [ 115.734303] vm_area_dup+0x20/0x160 [ 115.734570] __split_vma+0x170/0x950 [ 115.734839] split_vma+0xc6/0x110 [ 115.735091] mprotect_fixup+0x8d2/0xb30 [ 115.735383] do_mprotect_pkey+0x87e/0xd40 [ 115.735686] __x64_sys_mprotect+0x78/0xc0 [ 115.735993] do_syscall_64+0x3f/0x90 [ 115.736267] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 115.736635] [ 115.736761] Freed by task 13: [ 115.736995] kasan_save_stack+0x22/0x50 [ 115.737287] kasan_set_track+0x25/0x30 [ 115.737566] kasan_save_free_info+0x2b/0x50 [ 115.737868] __kasan_slab_free+0x10a/0x190 [ 115.738178] kmem_cache_free+0x10d/0x4d0 [ 115.738466] rcu_core+0x8c8/0x2860 [ 115.738727] __do_softirq+0x1b7/0x7d4 [ 115.739007] [ 115.739137] Last potentially related work creation: [ 115.739481] kasan_save_stack+0x22/0x50 [ 115.739768] __kasan_record_aux_stack+0x8e/0xa0 [ 115.740102] __call_rcu_common.constprop.0+0x6a/0xb90 [ 115.740475] remove_vma+0x139/0x170 [ 115.740734] do_vmi_align_munmap+0xd4a/0x11f0 [ 115.741061] do_vmi_munmap+0x1f1/0x2b0 [ 115.741333] __vm_munmap+0x138/0x3a0 [ 115.741599] __x64_sys_munmap+0x59/0x80 [ 115.741892] do_syscall_64+0x3f/0x90 [ 115.742172] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 115.742544] [ 115.742674] Second to last potentially related work creation: [ 115.743075] kasan_save_stack+0x22/0x50 [ 115.743368] __kasan_record_aux_stack+0x8e/0xa0 [ 115.743701] __call_rcu_common.constprop.0+0x6a/0xb90 [ 115.744082] remove_vma+0x139/0x170 [ 115.744342] do_vmi_align_munmap+0xd4a/0x11f0 [ 115.744669] do_vmi_munmap+0x1f1/0x2b0 [ 115.744964] mmap_region+0x1f9/0x2660 [ 115.745241] do_mmap+0x854/0xf00 [ 115.745491] vm_mmap_pgoff+0x1a6/0x3a0 [ 115.745769] ksys_mmap_pgoff+0x3af/0x500 [ 115.746055] do_syscall_64+0x3f/0x90 [ 115.746325] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 115.746700] [ 115.746825] The buggy address belongs to the object at ffff88800e2310e8 [ 115.746825] which belongs to the cache vm_area_struct of size 168 [ 115.747707] The buggy address is located 88 bytes inside of [ 115.747707] freed 168-byte region [ffff88800e2310e8, ffff88800e231190) [ 115.748533] [ 115.748656] The buggy address belongs to the physical page: [ 115.749045] page:0000000014080c5c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe231 [ 115.749665] memcg:ffff88800e3e7601 [ 115.749918] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 115.750332] page_type: 0xffffffff() [ 115.750590] raw: 0100000000000200 ffff88800879fc80 ffffea000038d640 dead000000000007 [ 115.751128] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e3e7601 [ 115.751664] page dumped because: kasan: bad access detected [ 115.752046] [ 115.752168] Memory state around the buggy address: [ 115.752509] ffff88800e231000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 115.753028] ffff88800e231080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 115.753542] >ffff88800e231100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 115.754039] ^ [ 115.754412] ffff88800e231180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 115.754913] ffff88800e231200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 115.755424] ================================================================== [ 115.755989] Disabling lock debugging due to kernel taint [ OK ] Finished Update UTMP about System Runlevel Changes. Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 117.709745] BUG: Bad rss-counter state mm:0000000003158a30 type:MM_FILEPAGES val:33 [ 117.710531] BUG: Bad rss-counter state mm:0000000003158a30 type:MM_ANONPAGES val:22 [ 118.119484] BUG: Bad rss-counter state mm:0000000036cb2b5b type:MM_FILEPAGES val:33 [ 118.120224] BUG: Bad rss-counter state mm:0000000036cb2b5b type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:6543' (ECDSA) to the list of known hosts. 2023/06/19 11:16:08 fuzzer started 2023/06/19 11:16:08 dialing manager at localhost:44161 2023/06/19 11:16:08 checking machine... 2023/06/19 11:16:08 checking revisions... [ 118.763702] kmemleak: Automatic memory scanning thread ended 2023/06/19 11:16:08 testing simple program... [ 118.813345] cgroup: Unknown subsys name 'net' [ 118.868820] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 11:14:36 Registers: info registers vcpu 0 RAX=0000000000000002 RBX=ffff88806ce3a2c0 RCX=1ffffffff0ba7a02 RDX=0000000000000002 RSI=00000000fffd37bc RDI=ffff88806ce3a2c0 RBP=0000000000000001 RSP=ffff88806ce09c40 R8 =00000000fffed1e4 R9 =fffffbfff0ba77da R10=0000000000008995 R11=0000001221c907c8 R12=ffffffff85d3bf9c R13=ffff88806ce3a2c0 R14=1ffff1100d9c139c R15=0000000000000000 RIP=ffffffff8450bdca RFL=00000046 [---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=00007ffe93c4b3a8 CR3=0000000005482000 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=00007fb911f69510000055b2ebccd790 XMM02=6f6974707972636e6561737268746977 XMM03=00000000000000000000000000777074 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffff00ffffff00ffffff00ff XMM08=00002000000000202020002020200000 XMM09=ffffffffffff00ffffff00ffffff00ff XMM10=00002000000000202020002020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000080000000 RBX=0000000000000000 RCX=ffffffff81b3bc35 RDX=ffff888016b01b40 RSI=0000000000000000 RDI=0000000000000007 RBP=ffff8880166c9118 RSP=ffff88800d80f790 R8 =0000000000000007 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000000 R12=0000000000000000 R13=ffff8880143eca20 R14=ffff8880166c8c98 R15=ffff88800d80f8c0 RIP=ffffffff814c07eb 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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007fbd1562d900 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=00007fbd14a352b0 CR3=000000000d592000 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=454d49544c4145525f454352554f535f XMM01=3d504d415453454d49545f454d49544c XMM02=ffffffffffffffffffffffffffffffff XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=9aa89e908a3352c200000000000ae988 XMM05=fd5530f5bfd59706000000000013ed00 XMM06=00c3ffa147b8d857000000000013d780 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000