[ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. [ 68.891806][ T22] ================================================================== [ 68.891818][ T22] BUG: KFENCE: use-after-free read in kvm_fastop_exception+0xf6a/0x1058 [ 68.891818][ T22] [ 68.891866][ T22] Use-after-free read at 0xffff88823bd8e020 (in kfence-#198): [ 68.891881][ T22] kvm_fastop_exception+0xf6a/0x1058 [ 68.891901][ T22] d_lookup+0xd8/0x170 [ 68.891924][ T22] lookup_dcache+0x1e/0x130 [ 68.891946][ T22] __lookup_hash+0x29/0x180 [ 68.891967][ T22] kern_path_locked+0x17e/0x320 [ 68.891991][ T22] handle_remove+0xa2/0x5fe [ 68.892015][ T22] devtmpfsd+0x1b9/0x2a3 [ 68.892036][ T22] kthread+0x3e5/0x4d0 [ 68.892058][ T22] ret_from_fork+0x1f/0x30 [ 68.892080][ T22] [ 68.892085][ T22] kfence-#198 [0xffff88823bd8e000-0xffff88823bd8efff, size=4096, cache=names_cache] allocated by task 22: [ 68.892124][ T22] getname_kernel+0x4e/0x370 [ 68.892152][ T22] kern_path_locked+0x71/0x320 [ 68.892175][ T22] handle_remove+0xa2/0x5fe [ 68.892197][ T22] devtmpfsd+0x1b9/0x2a3 [ 68.892217][ T22] kthread+0x3e5/0x4d0 [ 68.892237][ T22] ret_from_fork+0x1f/0x30 [ 68.892257][ T22] [ 68.892257][ T22] freed by task 22: [ 68.892283][ T22] putname.part.0+0xe1/0x120 [ 68.892304][ T22] kern_path_locked+0xc2/0x320 [ 68.892327][ T22] handle_remove+0xa2/0x5fe [ 68.892349][ T22] devtmpfsd+0x1b9/0x2a3 [ 68.892368][ T22] kthread+0x3e5/0x4d0 [ 68.892388][ T22] ret_from_fork+0x1f/0x30 [ 68.892408][ T22] [ 68.892413][ T22] CPU: 0 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 68.892435][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.892447][ T22] RIP: 0010:kvm_fastop_exception+0xf6a/0x1058 [ 68.892471][ T22] Code: d3 ed e9 af d4 6e f8 49 8d 0e 48 83 e1 f8 4c 8b 21 41 8d 0e 83 e1 07 c1 e1 03 49 d3 ec e9 05 e2 6e f8 49 8d 4d 00 48 83 e1 f8 <4c> 8b 21 41 8d 4d 00 83 e1 07 c1 e1 03 49 d3 ec e9 f5 eb 6e f8 bd [ 68.892491][ T22] RSP: 0018:ffffc90000dcfae8 EFLAGS: 00010282 [ 68.892509][ T22] RAX: 0000000032736376 RBX: ffff888070ff8910 RCX: ffff88823bd8e020 [ 68.892524][ T22] RDX: ffffed100e1ff129 RSI: 0000000000000004 RDI: 0000000000000007 [ 68.892538][ T22] RBP: 0000000000000004 R08: 0000000000000000 R09: ffff888070ff8940 [ 68.892551][ T22] R10: ffffed100e1ff128 R11: 0000000000000000 R12: ffff88823bd8e020 [ 68.892566][ T22] R13: ffff88823bd8e020 R14: ffff888070ff8940 R15: dffffc0000000000 [ 68.892581][ T22] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 68.892603][ T22] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.892618][ T22] CR2: ffff88823bd8e020 CR3: 000000002631d000 CR4: 00000000003506f0 [ 68.892632][ T22] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.892645][ T22] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.892659][ T22] Call Trace: [ 68.892669][ T22] d_lookup+0xd8/0x170 [ 68.892694][ T22] lookup_dcache+0x1e/0x130 [ 68.892718][ T22] __lookup_hash+0x29/0x180 [ 68.892743][ T22] kern_path_locked+0x17e/0x320 [ 68.892769][ T22] ? filename_lookup+0x80/0x80 [ 68.892799][ T22] handle_remove+0xa2/0x5fe [ 68.892825][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 68.892854][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 68.892879][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 68.892906][ T22] ? find_held_lock+0x2d/0x110 [ 68.892929][ T22] ? devtmpfsd+0xaa/0x2a3 [ 68.892950][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 68.892972][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 68.892996][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 68.893023][ T22] devtmpfsd+0x1b9/0x2a3 [ 68.893046][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 68.893071][ T22] kthread+0x3e5/0x4d0 [ 68.893094][ T22] ? set_kthread_struct+0x130/0x130 [ 68.893121][ T22] ret_from_fork+0x1f/0x30 [ 68.893155][ T22] ================================================================== [ 68.893163][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 68.893377][ T22] CPU: 0 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 68.893399][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.893412][ T22] Call Trace: [ 68.893420][ T22] dump_stack_lvl+0xcd/0x134 [ 68.893444][ T22] panic+0x2b0/0x6dd [ 68.893466][ T22] ? __warn_printk+0xf3/0xf3 [ 68.893498][ T22] ? kfence_report_error.cold+0x2f3/0xa56 [ 68.893530][ T22] kfence_report_error.cold+0x304/0xa56 [ 68.893556][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 68.893584][ T22] ? kfence_print_object+0x350/0x350 [ 68.893631][ T22] ? add_lock_to_list.constprop.0+0x185/0x370 [ 68.893656][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 68.893677][ T22] ? d_lookup+0xd8/0x170 [ 68.893701][ T22] ? lookup_dcache+0x1e/0x130 [ 68.893725][ T22] ? __lookup_hash+0x29/0x180 [ 68.893749][ T22] ? kern_path_locked+0x17e/0x320 [ 68.893776][ T22] ? handle_remove+0xa2/0x5fe [ 68.893801][ T22] ? devtmpfsd+0x1b9/0x2a3 [ 68.893824][ T22] ? kthread+0x3e5/0x4d0 [ 68.893847][ T22] ? ret_from_fork+0x1f/0x30 [ 68.893919][ T22] ? mark_lock+0xef/0x17b0 [ 68.893954][ T22] kfence_handle_page_fault+0x203/0x630 [ 68.893988][ T22] page_fault_oops+0x1c5/0x6b0 [ 68.894012][ T22] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 68.894039][ T22] ? is_prefetch.constprop.0+0xb7/0x530 [ 68.894064][ T22] ? dump_pagetable+0xc0/0xc0 [ 68.894088][ T22] ? pgtable_bad+0x90/0x90 [ 68.894114][ T22] ? search_bpf_extables+0x1d1/0x2f0 [ 68.894137][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 68.894171][ T22] kernelmode_fixup_or_oops+0x219/0x280 [ 68.894200][ T22] __bad_area_nosemaphore+0x36d/0x400 [ 68.894226][ T22] ? spurious_kernel_fault+0x38d/0x5b0 [ 68.894255][ T22] do_kern_addr_fault+0x5b/0x70 [ 68.894281][ T22] exc_page_fault+0x155/0x180 [ 68.894307][ T22] asm_exc_page_fault+0x1e/0x30 [ 68.894331][ T22] RIP: 0010:kvm_fastop_exception+0xf6a/0x1058 [ 68.894356][ T22] Code: d3 ed e9 af d4 6e f8 49 8d 0e 48 83 e1 f8 4c 8b 21 41 8d 0e 83 e1 07 c1 e1 03 49 d3 ec e9 05 e2 6e f8 49 8d 4d 00 48 83 e1 f8 <4c> 8b 21 41 8d 4d 00 83 e1 07 c1 e1 03 49 d3 ec e9 f5 eb 6e f8 bd [ 68.894376][ T22] RSP: 0018:ffffc90000dcfae8 EFLAGS: 00010282 [ 68.894396][ T22] RAX: 0000000032736376 RBX: ffff888070ff8910 RCX: ffff88823bd8e020 [ 68.894412][ T22] RDX: ffffed100e1ff129 RSI: 0000000000000004 RDI: 0000000000000007 [ 68.894427][ T22] RBP: 0000000000000004 R08: 0000000000000000 R09: ffff888070ff8940 [ 68.894442][ T22] R10: ffffed100e1ff128 R11: 0000000000000000 R12: ffff88823bd8e020 [ 68.894457][ T22] R13: ffff88823bd8e020 R14: ffff888070ff8940 R15: dffffc0000000000 [ 68.894491][ T22] ? __d_lookup+0x372/0x720 [ 68.894528][ T22] d_lookup+0xd8/0x170 [ 68.894556][ T22] lookup_dcache+0x1e/0x130 [ 68.894583][ T22] __lookup_hash+0x29/0x180 [ 68.894612][ T22] kern_path_locked+0x17e/0x320 [ 68.894641][ T22] ? filename_lookup+0x80/0x80 [ 68.894683][ T22] handle_remove+0xa2/0x5fe [ 68.894714][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 68.894747][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 68.894774][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 68.894811][ T22] ? find_held_lock+0x2d/0x110 [ 68.894838][ T22] ? devtmpfsd+0xaa/0x2a3 [ 68.894862][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 68.894886][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 68.894913][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 68.894949][ T22] devtmpfsd+0x1b9/0x2a3 [ 68.894976][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 68.895005][ T22] kthread+0x3e5/0x4d0 [ 68.895030][ T22] ? set_kthread_struct+0x130/0x130 [ 68.895061][ T22] ret_from_fork+0x1f/0x30 [ 68.895269][ T22] Kernel Offset: disabled