[ 23.606147] BUG: Bad rss-counter state mm:00000000d82fe932 type:MM_FILEPAGES val:33 [ 23.606913] BUG: Bad rss-counter state mm:00000000d82fe932 type:MM_ANONPAGES val:22 [ OK ] Finished Update UTMP about System Runlevel Changes. [ 23.748580] ================================================================== [ 23.748593] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 23.748629] Read of size 8 at addr ffff888019a3e5c8 by task sshd/219 [ 23.748644] [ 23.748649] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 23.748670] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 23.748681] Call Trace: [ 23.748687] [ 23.748694] dump_stack_lvl+0x91/0xf0 [ 23.748726] print_report+0xcc/0x620 [ 23.748759] ? __virt_addr_valid+0x102/0x340 [ 23.748784] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.748808] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.748832] kasan_report+0xbe/0xf0 [ 23.748866] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.748894] vma_interval_tree_remove+0xc75/0xec0 [ 23.748921] vma_prepare+0xc54/0x11a0 [ 23.748945] __split_vma+0x5af/0x950 [ 23.748969] ? __pfx___split_vma+0x10/0x10 [ 23.748995] ? find_held_lock+0x2c/0x110 [ 23.749029] do_vmi_align_munmap+0x2ba/0x11f0 [ 23.749055] ? lock_is_held_type+0x9f/0x120 [ 23.749083] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 23.749107] ? mtree_range_walk+0x632/0x900 [ 23.749144] ? mas_walk+0x5c7/0x7c0 [ 23.749177] do_vmi_munmap+0x1f1/0x2b0 [ 23.749203] mmap_region+0x1f9/0x2660 [ 23.749228] ? vm_mmap_pgoff+0x15c/0x3a0 [ 23.749255] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 23.749281] ? __pfx_lock_acquire+0x10/0x10 [ 23.749307] ? __pfx_mmap_region+0x10/0x10 [ 23.749334] ? security_mmap_addr+0x7d/0xa0 [ 23.749356] ? get_unmapped_area+0x1f5/0x3f0 [ 23.749379] do_mmap+0x854/0xf00 [ 23.749406] vm_mmap_pgoff+0x1a6/0x3a0 [ 23.749436] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 23.749467] ksys_mmap_pgoff+0x3af/0x500 [ 23.749491] do_syscall_64+0x3f/0x90 [ 23.749521] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.749557] RIP: 0033:0x7faec3edad82 [ 23.749571] 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 [ 23.749590] RSP: 002b:00007ffca4eadf48 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 23.749611] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007faec3edad82 [ 23.749625] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007faec3314000 [ 23.749637] RBP: 00007faec3314000 R08: 0000000000000009 R09: 0000000000001000 [ 23.749651] R10: 0000000000000812 R11: 0000000000000206 R12: 0000560ed6d38ec0 [ 23.749663] R13: 00007ffca4eadf60 R14: 00007ffca4eadf90 R15: 00007ffca4eae2f0 [ 23.749683] [ 23.749689] [ 23.749692] Allocated by task 206: [ 23.749700] kasan_save_stack+0x22/0x50 [ 23.749728] kasan_set_track+0x25/0x30 [ 23.749755] __kasan_slab_alloc+0x59/0x70 [ 23.749784] kmem_cache_alloc+0x16b/0x370 [ 23.749808] vm_area_dup+0x20/0x160 [ 23.749826] __split_vma+0x170/0x950 [ 23.749847] split_vma+0xc6/0x110 [ 23.749867] mprotect_fixup+0x8d2/0xb30 [ 23.749894] do_mprotect_pkey+0x87e/0xd40 [ 23.749920] __x64_sys_mprotect+0x78/0xc0 [ 23.749947] do_syscall_64+0x3f/0x90 [ 23.749974] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.750006] [ 23.750009] Freed by task 206: [ 23.750016] kasan_save_stack+0x22/0x50 [ 23.750048] kasan_set_track+0x25/0x30 [ 23.750075] kasan_save_free_info+0x2b/0x50 [ 23.750097] __kasan_slab_free+0x10a/0x190 [ 23.750126] kmem_cache_free+0x10d/0x4d0 [ 23.750150] rcu_core+0x8c8/0x2860 [ 23.750169] __do_softirq+0x1b7/0x7d4 [ 23.750191] [ 23.750194] Last potentially related work creation: [ 23.750199] kasan_save_stack+0x22/0x50 [ 23.750226] __kasan_record_aux_stack+0x8e/0xa0 [ 23.750247] __call_rcu_common.constprop.0+0x6a/0xb90 [ 23.750278] remove_vma+0x139/0x170 [ 23.750295] do_vmi_align_munmap+0xd4a/0x11f0 [ 23.750317] do_vmi_munmap+0x1f1/0x2b0 [ 23.750338] __vm_munmap+0x138/0x3a0 [ 23.750359] __x64_sys_munmap+0x59/0x80 [ 23.750382] do_syscall_64+0x3f/0x90 [ 23.750409] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.750440] [ 23.750442] The buggy address belongs to the object at ffff888019a3e570 [ 23.750442] which belongs to the cache vm_area_struct of size 168 [ 23.750458] The buggy address is located 88 bytes inside of [ 23.750458] freed 168-byte region [ffff888019a3e570, ffff888019a3e618) [ 23.750477] [ 23.750480] The buggy address belongs to the physical page: [ 23.750486] page:00000000d276290d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x19a3e [ 23.750507] memcg:ffff888010087701 [ 23.750514] flags: 0x100000000000200(slab|node=0|zone=1) [ 23.750529] page_type: 0xffffffff() [ 23.750546] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 23.750565] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888010087701 [ 23.750575] page dumped because: kasan: bad access detected [ 23.750582] [ 23.750585] Memory state around the buggy address: [ 23.750593] ffff888019a3e480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 23.750605] ffff888019a3e500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 23.750618] >ffff888019a3e580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.750628] ^ [ 23.750637] ffff888019a3e600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 23.750650] ffff888019a3e680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.750660] ================================================================== [ 23.750755] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 25.471558] BUG: Bad rss-counter state mm:00000000e0d3cc84 type:MM_FILEPAGES val:33 [ 25.472338] BUG: Bad rss-counter state mm:00000000e0d3cc84 type:MM_ANONPAGES val:22 [ 25.875214] BUG: Bad rss-counter state mm:000000009e0fa3e9 type:MM_FILEPAGES val:33 [ 25.875992] BUG: Bad rss-counter state mm:000000009e0fa3e9 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:41312' (ECDSA) to the list of known hosts. [ 25.987485] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 25.988558] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 25.989242] CPU: 0 PID: 238 Comm: sshd Tainted: G B 6.4.0-rc7-next-20230620 #1 [ 25.990029] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 25.990781] RIP: 0010:__rb_insert_augmented+0x78/0x8b0 [ 25.991390] Code: ea 48 c1 ea 03 42 80 3c 2a 00 0f 85 65 05 00 00 4c 8b 65 00 41 f6 c4 01 0f 85 18 05 00 00 4d 8d 44 24 08 4c 89 c2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77 [ 25.993030] RSP: 0018:ffff88800f9c78a8 EFLAGS: 00010212 [ 25.993541] RAX: ffff888018bb4b28 RBX: ffff88800f1f9868 RCX: 1ffff11001e3f30d [ 25.994193] RDX: 0000000000000001 RSI: ffff888018bb4b28 RDI: ffff88800f1f9868 [ 25.994846] RBP: ffff888019a484c8 R08: 0000000000000008 R09: 0000000000000000 [ 25.995492] R10: 0000000000000000 R11: 00000000000b6a61 R12: 0000000000000000 [ 25.996148] R13: dffffc0000000000 R14: ffff88800f9c7988 R15: ffffffff816e6340 [ 25.996774] FS: 00007f98ce304900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 [ 25.997483] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.997998] CR2: 00007f98ce2cb000 CR3: 0000000019926000 CR4: 0000000000350ef0 [ 25.998636] Call Trace: [ 25.998873] [ 25.999081] ? die_addr+0x3c/0xa0 [ 25.999409] ? exc_general_protection+0x125/0x220 [ 25.999882] ? asm_exc_general_protection+0x26/0x30 [ 26.000343] ? __pfx_vma_interval_tree_augment_rotate+0x10/0x10 [ 26.000891] ? __rb_insert_augmented+0x78/0x8b0 [ 26.001318] ? vma_interval_tree_insert+0x23a/0x400 [ 26.001772] vma_prepare+0xa1a/0x11a0 [ 26.002124] __split_vma+0x5af/0x950 [ 26.002473] ? __pfx___split_vma+0x10/0x10 [ 26.002863] ? lock_acquire+0x434/0x4c0 [ 26.003231] do_vmi_align_munmap+0x361/0x11f0 [ 26.003655] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 26.004107] ? mtree_range_walk+0x632/0x900 [ 26.004512] ? mas_walk+0x5c7/0x7c0 [ 26.004864] do_vmi_munmap+0x1f1/0x2b0 [ 26.005230] mmap_region+0x1f9/0x2660 [ 26.005597] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 26.006118] ? __pfx_lock_acquire+0x10/0x10 [ 26.006515] ? __pfx_mmap_region+0x10/0x10 [ 26.006902] ? security_mmap_addr+0x7d/0xa0 [ 26.007297] ? get_unmapped_area+0x1f5/0x3f0 [ 26.007695] do_mmap+0x854/0xf00 [ 26.008026] vm_mmap_pgoff+0x1a6/0x3a0 [ 26.008386] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 26.008796] ksys_mmap_pgoff+0x3af/0x500 [ 26.009169] do_syscall_64+0x3f/0x90 [ 26.009522] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.009999] RIP: 0033:0x7f98cee96d82 [ 26.010337] 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 [ 26.012013] RSP: 002b:00007ffd50a68e08 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 26.012748] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f98cee96d82 [ 26.013401] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f98ce2c6000 [ 26.014062] RBP: 00007f98ce2c6000 R08: 0000000000000008 R09: 0000000000001000 [ 26.014714] R10: 0000000000000812 R11: 0000000000000206 R12: 000055818e7ae630 [ 26.015372] R13: 00007ffd50a68e20 R14: 00007ffd50a68e50 R15: 00007ffd50a691b0 [ 26.016042] [ 26.016266] Modules linked in: [ 26.016695] ---[ end trace 0000000000000000 ]--- [ 26.017143] RIP: 0010:__rb_insert_augmented+0x78/0x8b0 [ 26.017889] Code: ea 48 c1 ea 03 42 80 3c 2a 00 0f 85 65 05 00 00 4c 8b 65 00 41 f6 c4 01 0f 85 18 05 00 00 4d 8d 44 24 08 4c 89 c2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77 [ 26.019838] RSP: 0018:ffff88800f9c78a8 EFLAGS: 00010212 [ 26.020344] RAX: ffff888018bb4b28 RBX: ffff88800f1f9868 RCX: 1ffff11001e3f30d [ 26.021199] RDX: 0000000000000001 RSI: ffff888018bb4b28 RDI: ffff88800f1f9868 [ 26.022012] RBP: ffff888019a484c8 R08: 0000000000000008 R09: 0000000000000000 [ 26.022835] R10: 0000000000000000 R11: 00000000000b6a61 R12: 0000000000000000 [ 26.023637] R13: dffffc0000000000 R14: ffff88800f9c7988 R15: ffffffff816e6340 [ 26.024317] FS: 00007f98ce304900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 [ 26.025080] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.025639] CR2: 00007f98ce2cb000 CR3: 0000000019926000 CR4: 0000000000350ef0 VM DIAGNOSIS: 22:15:28 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8451250e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c04000 R12=ffffffff85d3d350 R13=1ffffffff0a80fc7 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f 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 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=00007f5f4fa9ea10 CR3=0000000015b24000 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=2038323a35313a3232203032206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732038323a35313a3232203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=0000000000001255 RCX=0000000000000000 RDX=1ffff11001e3e3d4 RSI=ffffffff8171b153 RDI=ffff8880095a1fe8 RBP=ffff88800f1f1e80 RSP=ffff888017607e70 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000000 R12=0000000000000000 R13=0000563747cd6130 R14=ffff88800f1f1e90 R15=0000000000000000 RIP=ffffffff814c0860 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 00007f9eb657b900 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=0000563747cd6130 CR3=000000000e468000 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=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