[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ 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... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. [ 69.492717][ T22] ================================================================== [ 69.492731][ T22] BUG: KFENCE: use-after-free read in kvm_fastop_exception+0xf6a/0x1058 [ 69.492731][ T22] [ 69.492785][ T22] Use-after-free read at 0xffff88823bda0020 (in kfence-#207): [ 69.492800][ T22] kvm_fastop_exception+0xf6a/0x1058 [ 69.492822][ T22] d_lookup+0xd8/0x170 [ 69.492847][ T22] lookup_dcache+0x1e/0x130 [ 69.492871][ T22] __lookup_hash+0x29/0x180 [ 69.492894][ T22] kern_path_locked+0x17e/0x320 [ 69.492921][ T22] handle_remove+0xa2/0x5fe [ 69.492948][ T22] devtmpfsd+0x1b9/0x2a3 [ 69.492971][ T22] kthread+0x3e5/0x4d0 [ 69.492996][ T22] ret_from_fork+0x1f/0x30 [ 69.493020][ T22] [ 69.493024][ T22] kfence-#207 [0xffff88823bda0000-0xffff88823bda0fff, size=4096, cache=names_cache] allocated by task 22: [ 69.493067][ T22] getname_kernel+0x4e/0x370 [ 69.493092][ T22] kern_path_locked+0x71/0x320 [ 69.493117][ T22] handle_remove+0xa2/0x5fe [ 69.493152][ T22] devtmpfsd+0x1b9/0x2a3 [ 69.493173][ T22] kthread+0x3e5/0x4d0 [ 69.493195][ T22] ret_from_fork+0x1f/0x30 [ 69.493218][ T22] [ 69.493218][ T22] freed by task 22: [ 69.493248][ T22] putname.part.0+0xe1/0x120 [ 69.493272][ T22] kern_path_locked+0xc2/0x320 [ 69.493297][ T22] handle_remove+0xa2/0x5fe [ 69.493321][ T22] devtmpfsd+0x1b9/0x2a3 [ 69.493343][ T22] kthread+0x3e5/0x4d0 [ 69.493365][ T22] ret_from_fork+0x1f/0x30 [ 69.493393][ T22] [ 69.493398][ T22] CPU: 1 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 69.493422][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.493436][ T22] RIP: 0010:kvm_fastop_exception+0xf6a/0x1058 [ 69.493462][ 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 [ 69.493484][ T22] RSP: 0000:ffffc90000dcfae8 EFLAGS: 00010282 [ 69.493504][ T22] RAX: 0000000035736376 RBX: ffff88806e111068 RCX: ffff88823bda0020 [ 69.493522][ T22] RDX: ffffed100dc22214 RSI: 0000000000000004 RDI: 0000000000000007 [ 69.493537][ T22] RBP: 0000000000000004 R08: 0000000000000000 R09: ffff88806e111098 [ 69.493552][ T22] R10: ffffed100dc22213 R11: 0000000000000000 R12: ffff88823bda0020 [ 69.493567][ T22] R13: ffff88823bda0020 R14: ffff88806e111098 R15: dffffc0000000000 [ 69.493584][ T22] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 69.493607][ T22] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 69.493624][ T22] CR2: ffff88823bda0020 CR3: 00000000143d6000 CR4: 00000000003506e0 [ 69.493639][ T22] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 69.493652][ T22] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 69.493667][ T22] Call Trace: [ 69.493679][ T22] d_lookup+0xd8/0x170 [ 69.493708][ T22] lookup_dcache+0x1e/0x130 [ 69.493741][ T22] __lookup_hash+0x29/0x180 [ 69.493767][ T22] kern_path_locked+0x17e/0x320 [ 69.493796][ T22] ? filename_lookup+0x80/0x80 [ 69.493828][ T22] handle_remove+0xa2/0x5fe [ 69.493858][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 69.493891][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 69.493919][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 69.493949][ T22] ? find_held_lock+0x2d/0x110 [ 69.493972][ T22] ? devtmpfsd+0xaa/0x2a3 [ 69.493995][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 69.494018][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 69.494045][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 69.494074][ T22] devtmpfsd+0x1b9/0x2a3 [ 69.494099][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 69.494127][ T22] kthread+0x3e5/0x4d0 [ 69.494166][ T22] ? set_kthread_struct+0x130/0x130 [ 69.494196][ T22] ret_from_fork+0x1f/0x30 [ 69.494230][ T22] ================================================================== [ 69.494240][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 69.494535][ T22] CPU: 1 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 69.494562][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.494576][ T22] Call Trace: [ 69.494585][ T22] dump_stack_lvl+0xcd/0x134 [ 69.494614][ T22] panic+0x2b0/0x6dd [ 69.494638][ T22] ? __warn_printk+0xf3/0xf3 [ 69.494675][ T22] ? kfence_report_error.cold+0x2f3/0xa56 [ 69.494710][ T22] kfence_report_error.cold+0x304/0xa56 [ 69.494740][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 69.494771][ T22] ? kfence_print_object+0x350/0x350 [ 69.494804][ T22] ? add_lock_to_list.constprop.0+0x185/0x370 [ 69.494830][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 69.494855][ T22] ? d_lookup+0xd8/0x170 [ 69.494881][ T22] ? lookup_dcache+0x1e/0x130 [ 69.494908][ T22] ? __lookup_hash+0x29/0x180 [ 69.494935][ T22] ? kern_path_locked+0x17e/0x320 [ 69.494965][ T22] ? handle_remove+0xa2/0x5fe [ 69.494994][ T22] ? devtmpfsd+0x1b9/0x2a3 [ 69.495019][ T22] ? kthread+0x3e5/0x4d0 [ 69.495047][ T22] ? ret_from_fork+0x1f/0x30 [ 69.495128][ T22] ? mark_lock+0xef/0x17b0 [ 69.495175][ T22] kfence_handle_page_fault+0x203/0x630 [ 69.495214][ T22] page_fault_oops+0x1c5/0x6b0 [ 69.495241][ T22] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 69.495272][ T22] ? is_prefetch.constprop.0+0xb7/0x530 [ 69.495299][ T22] ? dump_pagetable+0xc0/0xc0 [ 69.495325][ T22] ? pgtable_bad+0x90/0x90 [ 69.495355][ T22] ? search_bpf_extables+0x1d1/0x2f0 [ 69.495382][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 69.495416][ T22] kernelmode_fixup_or_oops+0x219/0x280 [ 69.495447][ T22] __bad_area_nosemaphore+0x36d/0x400 [ 69.495475][ T22] ? spurious_kernel_fault+0x38d/0x5b0 [ 69.495507][ T22] do_kern_addr_fault+0x5b/0x70 [ 69.495536][ T22] exc_page_fault+0x155/0x180 [ 69.495565][ T22] asm_exc_page_fault+0x1e/0x30 [ 69.495592][ T22] RIP: 0010:kvm_fastop_exception+0xf6a/0x1058 [ 69.495619][ 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 [ 69.495641][ T22] RSP: 0000:ffffc90000dcfae8 EFLAGS: 00010282 [ 69.495662][ T22] RAX: 0000000035736376 RBX: ffff88806e111068 RCX: ffff88823bda0020 [ 69.495681][ T22] RDX: ffffed100dc22214 RSI: 0000000000000004 RDI: 0000000000000007 [ 69.495698][ T22] RBP: 0000000000000004 R08: 0000000000000000 R09: ffff88806e111098 [ 69.495714][ T22] R10: ffffed100dc22213 R11: 0000000000000000 R12: ffff88823bda0020 [ 69.495732][ T22] R13: ffff88823bda0020 R14: ffff88806e111098 R15: dffffc0000000000 [ 69.495770][ T22] ? __d_lookup+0x372/0x720 [ 69.495813][ T22] d_lookup+0xd8/0x170 [ 69.495844][ T22] lookup_dcache+0x1e/0x130 [ 69.495874][ T22] __lookup_hash+0x29/0x180 [ 69.495907][ T22] kern_path_locked+0x17e/0x320 [ 69.495938][ T22] ? filename_lookup+0x80/0x80 [ 69.495986][ T22] handle_remove+0xa2/0x5fe [ 69.496021][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 69.496060][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 69.496090][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 69.496137][ T22] ? find_held_lock+0x2d/0x110 [ 69.496180][ T22] ? devtmpfsd+0xaa/0x2a3 [ 69.496207][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 69.496233][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 69.496264][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 69.496304][ T22] devtmpfsd+0x1b9/0x2a3 [ 69.496334][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 69.496375][ T22] kthread+0x3e5/0x4d0 [ 69.496404][ T22] ? set_kthread_struct+0x130/0x130 [ 69.496437][ T22] ret_from_fork+0x1f/0x30 [ 69.496893][ T22] Kernel Offset: disabled