[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ 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... [ OK ] Started Load/Save RF Kill Switch Status. [ 70.794992][ T22] ================================================================== [ 70.795006][ T22] BUG: KFENCE: use-after-free read in kvm_fastop_exception+0xf6a/0x1058 [ 70.795006][ T22] [ 70.795050][ T22] Use-after-free read at 0xffff88823bdbe020 (in kfence-#222): [ 70.795064][ T22] kvm_fastop_exception+0xf6a/0x1058 [ 70.795089][ T22] d_lookup+0xd8/0x170 [ 70.795112][ T22] lookup_dcache+0x1e/0x130 [ 70.795132][ T22] __lookup_hash+0x29/0x180 [ 70.795152][ T22] kern_path_locked+0x17e/0x320 [ 70.795174][ T22] handle_remove+0xa2/0x5fe [ 70.795197][ T22] devtmpfsd+0x1b9/0x2a3 [ 70.795218][ T22] kthread+0x3e5/0x4d0 [ 70.795240][ T22] ret_from_fork+0x1f/0x30 [ 70.795261][ T22] [ 70.795265][ T22] kfence-#222 [0xffff88823bdbe000-0xffff88823bdbefff, size=4096, cache=names_cache] allocated by task 22: [ 70.795304][ T22] getname_kernel+0x4e/0x370 [ 70.795324][ T22] kern_path_locked+0x71/0x320 [ 70.795345][ T22] handle_remove+0xa2/0x5fe [ 70.795365][ T22] devtmpfsd+0x1b9/0x2a3 [ 70.795383][ T22] kthread+0x3e5/0x4d0 [ 70.795401][ T22] ret_from_fork+0x1f/0x30 [ 70.795419][ T22] [ 70.795419][ T22] freed by task 22: [ 70.795443][ T22] putname.part.0+0xe1/0x120 [ 70.795463][ T22] kern_path_locked+0xc2/0x320 [ 70.795483][ T22] handle_remove+0xa2/0x5fe [ 70.795503][ T22] devtmpfsd+0x1b9/0x2a3 [ 70.795520][ T22] kthread+0x3e5/0x4d0 [ 70.795539][ T22] ret_from_fork+0x1f/0x30 [ 70.795562][ T22] [ 70.795567][ T22] CPU: 1 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 70.795588][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.795600][ T22] RIP: 0010:kvm_fastop_exception+0xf6a/0x1058 [ 70.795624][ T22] Code: d3 ed e9 ef 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 45 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 35 ec 6e f8 bd [ 70.795648][ T22] RSP: 0018:ffffc90000dcfae8 EFLAGS: 00010282 [ 70.795666][ T22] RAX: 0000000032736376 RBX: ffff88806e9e1ab0 RCX: ffff88823bdbe020 [ 70.795681][ T22] RDX: ffffed100dd3c35d RSI: 0000000000000004 RDI: 0000000000000007 [ 70.795694][ T22] RBP: 0000000000000004 R08: 0000000000000000 R09: ffff88806e9e1ae0 [ 70.795707][ T22] R10: ffffed100dd3c35c R11: 0000000000000000 R12: ffff88823bdbe020 [ 70.795721][ T22] R13: ffff88823bdbe020 R14: ffff88806e9e1ae0 R15: dffffc0000000000 [ 70.795735][ T22] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 70.795755][ T22] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.795769][ T22] CR2: ffff88823bdbe020 CR3: 0000000074f8f000 CR4: 00000000001506e0 [ 70.795783][ T22] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.795795][ T22] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.795808][ T22] Call Trace: [ 70.795819][ T22] d_lookup+0xd8/0x170 [ 70.795841][ T22] lookup_dcache+0x1e/0x130 [ 70.795863][ T22] __lookup_hash+0x29/0x180 [ 70.795885][ T22] kern_path_locked+0x17e/0x320 [ 70.795909][ T22] ? filename_lookup+0x80/0x80 [ 70.795937][ T22] handle_remove+0xa2/0x5fe [ 70.795960][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 70.795987][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 70.796011][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 70.796038][ T22] ? find_held_lock+0x2d/0x110 [ 70.796058][ T22] ? devtmpfsd+0xaa/0x2a3 [ 70.796078][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 70.796105][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 70.796127][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 70.796152][ T22] devtmpfsd+0x1b9/0x2a3 [ 70.796173][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 70.796197][ T22] kthread+0x3e5/0x4d0 [ 70.796218][ T22] ? set_kthread_struct+0x130/0x130 [ 70.796241][ T22] ret_from_fork+0x1f/0x30 [ 70.796268][ T22] ================================================================== [ 70.796277][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 70.796535][ T22] CPU: 1 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 70.796557][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.796569][ T22] Call Trace: [ 70.796576][ T22] dump_stack_lvl+0xcd/0x134 [ 70.796602][ T22] panic+0x2b0/0x6dd [ 70.796631][ T22] ? __warn_printk+0xf3/0xf3 [ 70.796661][ T22] ? kfence_report_error.cold+0x2f3/0xa56 [ 70.796691][ T22] kfence_report_error.cold+0x304/0xa56 [ 70.796716][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 70.796742][ T22] ? kfence_print_object+0x350/0x350 [ 70.796773][ T22] ? add_lock_to_list.constprop.0+0x185/0x370 [ 70.796796][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 70.796817][ T22] ? d_lookup+0xd8/0x170 [ 70.796838][ T22] ? lookup_dcache+0x1e/0x130 [ 70.796864][ T22] ? __lookup_hash+0x29/0x180 [ 70.796886][ T22] ? kern_path_locked+0x17e/0x320 [ 70.796911][ T22] ? handle_remove+0xa2/0x5fe [ 70.796934][ T22] ? devtmpfsd+0x1b9/0x2a3 [ 70.796955][ T22] ? kthread+0x3e5/0x4d0 [ 70.796977][ T22] ? ret_from_fork+0x1f/0x30 [ 70.797040][ T22] ? mark_lock+0xef/0x17b0 [ 70.797074][ T22] kfence_handle_page_fault+0x203/0x630 [ 70.797109][ T22] page_fault_oops+0x1c5/0x6b0 [ 70.797133][ T22] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 70.797160][ T22] ? is_prefetch.constprop.0+0xb7/0x530 [ 70.797187][ T22] ? dump_pagetable+0xc0/0xc0 [ 70.797209][ T22] ? pgtable_bad+0x90/0x90 [ 70.797234][ T22] ? search_bpf_extables+0x1d1/0x2f0 [ 70.797256][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 70.797285][ T22] kernelmode_fixup_or_oops+0x219/0x280 [ 70.797311][ T22] __bad_area_nosemaphore+0x36d/0x400 [ 70.797336][ T22] ? spurious_kernel_fault+0x38d/0x5b0 [ 70.797363][ T22] do_kern_addr_fault+0x5b/0x70 [ 70.797387][ T22] exc_page_fault+0x155/0x180 [ 70.797411][ T22] asm_exc_page_fault+0x1e/0x30 [ 70.797436][ T22] RIP: 0010:kvm_fastop_exception+0xf6a/0x1058 [ 70.797459][ T22] Code: d3 ed e9 ef 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 45 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 35 ec 6e f8 bd [ 70.797479][ T22] RSP: 0018:ffffc90000dcfae8 EFLAGS: 00010282 [ 70.797497][ T22] RAX: 0000000032736376 RBX: ffff88806e9e1ab0 RCX: ffff88823bdbe020 [ 70.797513][ T22] RDX: ffffed100dd3c35d RSI: 0000000000000004 RDI: 0000000000000007 [ 70.797527][ T22] RBP: 0000000000000004 R08: 0000000000000000 R09: ffff88806e9e1ae0 [ 70.797541][ T22] R10: ffffed100dd3c35c R11: 0000000000000000 R12: ffff88823bdbe020 [ 70.797555][ T22] R13: ffff88823bdbe020 R14: ffff88806e9e1ae0 R15: dffffc0000000000 [ 70.797587][ T22] ? __d_lookup+0x372/0x720 [ 70.797628][ T22] d_lookup+0xd8/0x170 [ 70.797653][ T22] lookup_dcache+0x1e/0x130 [ 70.797678][ T22] __lookup_hash+0x29/0x180 [ 70.797705][ T22] kern_path_locked+0x17e/0x320 [ 70.797731][ T22] ? filename_lookup+0x80/0x80 [ 70.797774][ T22] handle_remove+0xa2/0x5fe [ 70.797802][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 70.797854][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 70.797879][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 70.797913][ T22] ? find_held_lock+0x2d/0x110 [ 70.797939][ T22] ? devtmpfsd+0xaa/0x2a3 [ 70.797962][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 70.797990][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 70.798015][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 70.798048][ T22] devtmpfsd+0x1b9/0x2a3 [ 70.798073][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 70.798104][ T22] kthread+0x3e5/0x4d0 [ 70.798127][ T22] ? set_kthread_struct+0x130/0x130 [ 70.798155][ T22] ret_from_fork+0x1f/0x30 [ 70.798602][ T22] Kernel Offset: disabled