[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ 64.143776][ T22] ================================================================== [ 64.143788][ T22] BUG: KFENCE: use-after-free read in kvm_fastop_exception+0xf6a/0x1058 [ 64.143788][ T22] [ 64.143823][ T22] Use-after-free read at 0xffff88823bcfa020 (in kfence-#124): [ 64.143836][ T22] kvm_fastop_exception+0xf6a/0x1058 [ 64.143853][ T22] d_lookup+0xd8/0x170 [ 64.143873][ T22] lookup_dcache+0x1e/0x130 [ 64.143892][ T22] __lookup_hash+0x29/0x180 [ 64.143910][ T22] kern_path_locked+0x17e/0x320 [ 64.143931][ T22] handle_remove+0xa2/0x5fe [ 64.143953][ T22] devtmpfsd+0x1b9/0x2a3 [ 64.143971][ T22] kthread+0x3e5/0x4d0 [ 64.143991][ T22] ret_from_fork+0x1f/0x30 [ 64.144010][ T22] [ 64.144014][ T22] kfence-#124 [0xffff88823bcfa000-0xffff88823bcfafff, size=4096, cache=names_cache] allocated by task 22: [ 64.144048][ T22] getname_kernel+0x4e/0x370 [ 64.144068][ T22] kern_path_locked+0x71/0x320 [ 64.144088][ T22] handle_remove+0xa2/0x5fe [ 64.144107][ T22] devtmpfsd+0x1b9/0x2a3 [ 64.144123][ T22] kthread+0x3e5/0x4d0 [ 64.144142][ T22] ret_from_fork+0x1f/0x30 [ 64.144159][ T22] [ 64.144159][ T22] freed by task 22: [ 64.144182][ T22] putname.part.0+0xe1/0x120 [ 64.144200][ T22] kern_path_locked+0xc2/0x320 [ 64.144219][ T22] handle_remove+0xa2/0x5fe [ 64.144238][ T22] devtmpfsd+0x1b9/0x2a3 [ 64.144255][ T22] kthread+0x3e5/0x4d0 [ 64.144272][ T22] ret_from_fork+0x1f/0x30 [ 64.144289][ T22] [ 64.144294][ T22] CPU: 0 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 64.144314][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.144324][ T22] RIP: 0010:kvm_fastop_exception+0xf6a/0x1058 [ 64.144345][ T22] Code: d3 ed e9 df d2 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 35 e0 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 25 ea 6e f8 bd [ 64.144362][ T22] RSP: 0018:ffffc90000dcfae8 EFLAGS: 00010282 [ 64.144378][ T22] RAX: 0000000035736376 RBX: ffff88806ede1358 RCX: ffff88823bcfa020 [ 64.144392][ T22] RDX: ffffed100ddbc272 RSI: 0000000000000004 RDI: 0000000000000007 [ 64.144404][ T22] RBP: 0000000000000004 R08: 0000000000000000 R09: ffff88806ede1388 [ 64.144415][ T22] R10: ffffed100ddbc271 R11: 0000000000000000 R12: ffff88823bcfa020 [ 64.144427][ T22] R13: ffff88823bcfa020 R14: ffff88806ede1388 R15: dffffc0000000000 [ 64.144440][ T22] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 64.144459][ T22] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.144472][ T22] CR2: ffff88823bcfa020 CR3: 0000000021193000 CR4: 00000000001506f0 [ 64.144485][ T22] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.144496][ T22] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.144508][ T22] Call Trace: [ 64.144517][ T22] d_lookup+0xd8/0x170 [ 64.144539][ T22] lookup_dcache+0x1e/0x130 [ 64.144559][ T22] __lookup_hash+0x29/0x180 [ 64.144581][ T22] kern_path_locked+0x17e/0x320 [ 64.144603][ T22] ? filename_lookup+0x80/0x80 [ 64.144629][ T22] handle_remove+0xa2/0x5fe [ 64.144657][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 64.144682][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 64.144703][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 64.144727][ T22] ? find_held_lock+0x2d/0x110 [ 64.144746][ T22] ? devtmpfsd+0xaa/0x2a3 [ 64.144765][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 64.144784][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 64.144805][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 64.144828][ T22] devtmpfsd+0x1b9/0x2a3 [ 64.144848][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 64.144870][ T22] kthread+0x3e5/0x4d0 [ 64.144890][ T22] ? set_kthread_struct+0x130/0x130 [ 64.144912][ T22] ret_from_fork+0x1f/0x30 [ 64.144938][ T22] ================================================================== [ 64.144944][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 64.145164][ T22] CPU: 0 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 64.145183][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.145194][ T22] Call Trace: [ 64.145201][ T22] dump_stack_lvl+0xcd/0x134 [ 64.145223][ T22] panic+0x2b0/0x6dd [ 64.145242][ T22] ? __warn_printk+0xf3/0xf3 [ 64.145271][ T22] ? kfence_report_error.cold+0x2f3/0xa56 [ 64.145297][ T22] kfence_report_error.cold+0x304/0xa56 [ 64.145320][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 64.145344][ T22] ? kfence_print_object+0x350/0x350 [ 64.145368][ T22] ? add_lock_to_list.constprop.0+0x185/0x370 [ 64.145389][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 64.145407][ T22] ? d_lookup+0xd8/0x170 [ 64.145428][ T22] ? lookup_dcache+0x1e/0x130 [ 64.145449][ T22] ? __lookup_hash+0x29/0x180 [ 64.145469][ T22] ? kern_path_locked+0x17e/0x320 [ 64.145492][ T22] ? handle_remove+0xa2/0x5fe [ 64.145515][ T22] ? devtmpfsd+0x1b9/0x2a3 [ 64.145534][ T22] ? kthread+0x3e5/0x4d0 [ 64.145555][ T22] ? ret_from_fork+0x1f/0x30 [ 64.145617][ T22] ? mark_lock+0xef/0x17b0 [ 64.145652][ T22] kfence_handle_page_fault+0x203/0x630 [ 64.145681][ T22] page_fault_oops+0x1c5/0x6b0 [ 64.145702][ T22] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 64.145727][ T22] ? is_prefetch.constprop.0+0xb7/0x530 [ 64.145749][ T22] ? dump_pagetable+0xc0/0xc0 [ 64.145769][ T22] ? pgtable_bad+0x90/0x90 [ 64.145792][ T22] ? search_bpf_extables+0x1d1/0x2f0 [ 64.145812][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 64.145838][ T22] kernelmode_fixup_or_oops+0x219/0x280 [ 64.145863][ T22] __bad_area_nosemaphore+0x36d/0x400 [ 64.145884][ T22] ? spurious_kernel_fault+0x38d/0x5b0 [ 64.145910][ T22] do_kern_addr_fault+0x5b/0x70 [ 64.145933][ T22] exc_page_fault+0x155/0x180 [ 64.145955][ T22] asm_exc_page_fault+0x1e/0x30 [ 64.145977][ T22] RIP: 0010:kvm_fastop_exception+0xf6a/0x1058 [ 64.145997][ T22] Code: d3 ed e9 df d2 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 35 e0 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 25 ea 6e f8 bd [ 64.146015][ T22] RSP: 0018:ffffc90000dcfae8 EFLAGS: 00010282 [ 64.146032][ T22] RAX: 0000000035736376 RBX: ffff88806ede1358 RCX: ffff88823bcfa020 [ 64.146046][ T22] RDX: ffffed100ddbc272 RSI: 0000000000000004 RDI: 0000000000000007 [ 64.146059][ T22] RBP: 0000000000000004 R08: 0000000000000000 R09: ffff88806ede1388 [ 64.146072][ T22] R10: ffffed100ddbc271 R11: 0000000000000000 R12: ffff88823bcfa020 [ 64.146085][ T22] R13: ffff88823bcfa020 R14: ffff88806ede1388 R15: dffffc0000000000 [ 64.146114][ T22] ? __d_lookup+0x372/0x720 [ 64.146148][ T22] d_lookup+0xd8/0x170 [ 64.146172][ T22] lookup_dcache+0x1e/0x130 [ 64.146196][ T22] __lookup_hash+0x29/0x180 [ 64.146221][ T22] kern_path_locked+0x17e/0x320 [ 64.146245][ T22] ? filename_lookup+0x80/0x80 [ 64.146281][ T22] handle_remove+0xa2/0x5fe [ 64.146308][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 64.146338][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 64.146360][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 64.146392][ T22] ? find_held_lock+0x2d/0x110 [ 64.146416][ T22] ? devtmpfsd+0xaa/0x2a3 [ 64.146437][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 64.146457][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 64.146481][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 64.146512][ T22] devtmpfsd+0x1b9/0x2a3 [ 64.146535][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 64.146560][ T22] kthread+0x3e5/0x4d0 [ 64.146582][ T22] ? set_kthread_struct+0x130/0x130 [ 64.146608][ T22] ret_from_fork+0x1f/0x30 [ 64.147014][ T22] Kernel Offset: disabled