Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ 73.716066][ T22] ================================================================== [ 73.716079][ T22] BUG: KFENCE: use-after-free read in kvm_fastop_exception+0xf6d/0x105b [ 73.716079][ T22] [ 73.716125][ T22] Use-after-free read at 0xffff88823bd74020 (in kfence-#185): [ 73.716141][ T22] kvm_fastop_exception+0xf6d/0x105b [ 73.716163][ T22] d_lookup+0xd8/0x170 [ 73.716193][ T22] lookup_dcache+0x1e/0x130 [ 73.716218][ T22] __lookup_hash+0x29/0x180 [ 73.716241][ T22] kern_path_locked+0x17e/0x320 [ 73.716266][ T22] handle_remove+0xa2/0x5fe [ 73.716292][ T22] devtmpfsd+0x1b9/0x2a3 [ 73.716314][ T22] kthread+0x3e5/0x4d0 [ 73.716338][ T22] ret_from_fork+0x1f/0x30 [ 73.716362][ T22] [ 73.716366][ T22] kfence-#185 [0xffff88823bd74000-0xffff88823bd74fff, size=4096, cache=names_cache] allocated by task 22: [ 73.716408][ T22] getname_kernel+0x4e/0x370 [ 73.716432][ T22] kern_path_locked+0x71/0x320 [ 73.716455][ T22] handle_remove+0xa2/0x5fe [ 73.716477][ T22] devtmpfsd+0x1b9/0x2a3 [ 73.716496][ T22] kthread+0x3e5/0x4d0 [ 73.716516][ T22] ret_from_fork+0x1f/0x30 [ 73.716537][ T22] [ 73.716537][ T22] freed by task 22: [ 73.716565][ T22] putname.part.0+0xe1/0x120 [ 73.716588][ T22] kern_path_locked+0xc2/0x320 [ 73.716612][ T22] handle_remove+0xa2/0x5fe [ 73.716636][ T22] devtmpfsd+0x1b9/0x2a3 [ 73.716656][ T22] kthread+0x3e5/0x4d0 [ 73.716676][ T22] ret_from_fork+0x1f/0x30 [ 73.716698][ T22] [ 73.716703][ T22] CPU: 0 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 73.716728][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.716742][ T22] RIP: 0010:kvm_fastop_exception+0xf6d/0x105b [ 73.716767][ T22] Code: d3 ed e9 f4 e2 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 4a f0 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 3a fa 6e f8 bd [ 73.716790][ T22] RSP: 0018:ffffc90000dcfae8 EFLAGS: 00010282 [ 73.716810][ T22] RAX: 0000000033736376 RBX: ffff88806e45e330 RCX: ffff88823bd74020 [ 73.716827][ T22] RDX: ffffed100dc8bc6d RSI: 0000000000000004 RDI: 0000000000000007 [ 73.716843][ T22] RBP: 0000000000000004 R08: 0000000000000000 R09: ffff88806e45e360 [ 73.716858][ T22] R10: ffffed100dc8bc6c R11: 0000000000000000 R12: ffff88823bd74020 [ 73.716875][ T22] R13: ffff88823bd74020 R14: ffff88806e45e360 R15: dffffc0000000000 [ 73.716892][ T22] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 73.716916][ T22] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.716933][ T22] CR2: ffff88823bd74020 CR3: 000000000b68e000 CR4: 00000000001506f0 [ 73.716949][ T22] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.716963][ T22] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.716979][ T22] Call Trace: [ 73.716991][ T22] d_lookup+0xd8/0x170 [ 73.717017][ T22] lookup_dcache+0x1e/0x130 [ 73.717042][ T22] __lookup_hash+0x29/0x180 [ 73.717067][ T22] kern_path_locked+0x17e/0x320 [ 73.717093][ T22] ? filename_lookup+0x80/0x80 [ 73.717122][ T22] handle_remove+0xa2/0x5fe [ 73.717146][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 73.717182][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 73.717210][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 73.717240][ T22] ? find_held_lock+0x2d/0x110 [ 73.717263][ T22] ? devtmpfsd+0xaa/0x2a3 [ 73.717286][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 73.717308][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 73.717334][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 73.717362][ T22] devtmpfsd+0x1b9/0x2a3 [ 73.717386][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 73.717413][ T22] kthread+0x3e5/0x4d0 [ 73.717437][ T22] ? set_kthread_struct+0x130/0x130 [ 73.717466][ T22] ret_from_fork+0x1f/0x30 [ 73.717498][ T22] ================================================================== [ 73.717507][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 73.717797][ T22] CPU: 0 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 73.717822][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.717836][ T22] Call Trace: [ 73.717844][ T22] dump_stack_lvl+0xcd/0x134 [ 73.717871][ T22] panic+0x2b0/0x6dd [ 73.717896][ T22] ? __warn_printk+0xf3/0xf3 [ 73.717930][ T22] ? kfence_report_error.cold+0x2f3/0xa56 [ 73.717972][ T22] kfence_report_error.cold+0x304/0xa56 [ 73.718009][ T22] ? kvm_fastop_exception+0xf6d/0x105b [ 73.718040][ T22] ? kfence_print_object+0x350/0x350 [ 73.718071][ T22] ? add_lock_to_list.constprop.0+0x185/0x370 [ 73.718098][ T22] ? kvm_fastop_exception+0xf6d/0x105b [ 73.718122][ T22] ? d_lookup+0xd8/0x170 [ 73.718147][ T22] ? lookup_dcache+0x1e/0x130 [ 73.718180][ T22] ? __lookup_hash+0x29/0x180 [ 73.718206][ T22] ? kern_path_locked+0x17e/0x320 [ 73.718234][ T22] ? handle_remove+0xa2/0x5fe [ 73.718261][ T22] ? devtmpfsd+0x1b9/0x2a3 [ 73.718283][ T22] ? kthread+0x3e5/0x4d0 [ 73.718308][ T22] ? ret_from_fork+0x1f/0x30 [ 73.718387][ T22] ? mark_lock+0xef/0x17b0 [ 73.718427][ T22] kfence_handle_page_fault+0x203/0x630 [ 73.718464][ T22] page_fault_oops+0x1c5/0x6b0 [ 73.718491][ T22] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 73.718522][ T22] ? is_prefetch.constprop.0+0xb7/0x530 [ 73.718549][ T22] ? dump_pagetable+0xc0/0xc0 [ 73.718576][ T22] ? pgtable_bad+0x90/0x90 [ 73.718605][ T22] ? search_bpf_extables+0x1d1/0x2f0 [ 73.718632][ T22] ? kvm_fastop_exception+0xf6d/0x105b [ 73.718665][ T22] kernelmode_fixup_or_oops+0x219/0x280 [ 73.718697][ T22] __bad_area_nosemaphore+0x36d/0x400 [ 73.718726][ T22] ? spurious_kernel_fault+0x38d/0x5b0 [ 73.718758][ T22] do_kern_addr_fault+0x5b/0x70 [ 73.718787][ T22] exc_page_fault+0x155/0x180 [ 73.718815][ T22] asm_exc_page_fault+0x1e/0x30 [ 73.718842][ T22] RIP: 0010:kvm_fastop_exception+0xf6d/0x105b [ 73.718868][ T22] Code: d3 ed e9 f4 e2 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 4a f0 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 3a fa 6e f8 bd [ 73.718890][ T22] RSP: 0018:ffffc90000dcfae8 EFLAGS: 00010282 [ 73.718911][ T22] RAX: 0000000033736376 RBX: ffff88806e45e330 RCX: ffff88823bd74020 [ 73.718929][ T22] RDX: ffffed100dc8bc6d RSI: 0000000000000004 RDI: 0000000000000007 [ 73.718945][ T22] RBP: 0000000000000004 R08: 0000000000000000 R09: ffff88806e45e360 [ 73.718961][ T22] R10: ffffed100dc8bc6c R11: 0000000000000000 R12: ffff88823bd74020 [ 73.718978][ T22] R13: ffff88823bd74020 R14: ffff88806e45e360 R15: dffffc0000000000 [ 73.719016][ T22] ? __d_lookup+0x372/0x720 [ 73.719057][ T22] d_lookup+0xd8/0x170 [ 73.719088][ T22] lookup_dcache+0x1e/0x130 [ 73.719117][ T22] __lookup_hash+0x29/0x180 [ 73.719149][ T22] kern_path_locked+0x17e/0x320 [ 73.719187][ T22] ? filename_lookup+0x80/0x80 [ 73.719233][ T22] handle_remove+0xa2/0x5fe [ 73.719266][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 73.719303][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 73.719332][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 73.719373][ T22] ? find_held_lock+0x2d/0x110 [ 73.719404][ T22] ? devtmpfsd+0xaa/0x2a3 [ 73.719428][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 73.719454][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 73.719484][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 73.719523][ T22] devtmpfsd+0x1b9/0x2a3 [ 73.719552][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 73.719584][ T22] kthread+0x3e5/0x4d0 [ 73.719611][ T22] ? set_kthread_struct+0x130/0x130 [ 73.719644][ T22] ret_from_fork+0x1f/0x30 [ 73.721182][ T22] Kernel Offset: disabled