[ OK ] Started Regular background program processing daemon. Starting Permit User Sessions... Starting getty on tty2-tty6 if dbus and logind are not available... [ OK ] Started Daily Cleanup of Temporary Directories. [ OK ] Reached target Timers. [ OK ] Started System Logging Service. [ OK ] Started Permit User Sessions. [ OK ] Found device /dev/ttyS0. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ 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. [ 77.019531][ T22] ================================================================== [ 77.019544][ T22] BUG: KFENCE: use-after-free read in kvm_fastop_exception+0xf6a/0x1058 [ 77.019544][ T22] [ 77.019591][ T22] Use-after-free read at 0xffff88823bde2020 (in kfence-#240): [ 77.019604][ T22] kvm_fastop_exception+0xf6a/0x1058 [ 77.019625][ T22] d_lookup+0xd8/0x170 [ 77.019644][ T22] lookup_dcache+0x1e/0x130 [ 77.019663][ T22] __lookup_hash+0x29/0x180 [ 77.019681][ T22] kern_path_locked+0x17e/0x320 [ 77.019702][ T22] handle_remove+0xa2/0x5fe [ 77.019721][ T22] devtmpfsd+0x1b9/0x2a3 [ 77.019742][ T22] kthread+0x3e5/0x4d0 [ 77.019763][ T22] ret_from_fork+0x1f/0x30 [ 77.019785][ T22] [ 77.019789][ T22] kfence-#240: 0xffff88823bde2000-0xffff88823bde2fff, size=4096, cache=names_cache [ 77.019789][ T22] [ 77.019809][ T22] allocated by task 22 on cpu 1 at 77.019302s: [ 77.019839][ T22] getname_kernel+0x4e/0x370 [ 77.019859][ T22] kern_path_locked+0x71/0x320 [ 77.019880][ T22] handle_remove+0xa2/0x5fe [ 77.019898][ T22] devtmpfsd+0x1b9/0x2a3 [ 77.019919][ T22] kthread+0x3e5/0x4d0 [ 77.019938][ T22] ret_from_fork+0x1f/0x30 [ 77.019959][ T22] [ 77.019962][ T22] freed by task 22 on cpu 1 at 77.019336s: [ 77.019999][ T22] putname.part.0+0xe1/0x120 [ 77.020018][ T22] kern_path_locked+0xc2/0x320 [ 77.020038][ T22] handle_remove+0xa2/0x5fe [ 77.020055][ T22] devtmpfsd+0x1b9/0x2a3 [ 77.020076][ T22] kthread+0x3e5/0x4d0 [ 77.020096][ T22] ret_from_fork+0x1f/0x30 [ 77.020116][ T22] [ 77.020121][ T22] CPU: 1 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 77.020149][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.020163][ T22] RIP: 0010:kvm_fastop_exception+0xf6a/0x1058 [ 77.020190][ T22] Code: d3 ed e9 67 8d 6d f8 49 8d 0e 48 83 e1 f8 4c 8b 21 41 8d 0e 83 e1 07 c1 e1 03 49 d3 ec e9 bd 9a 6d 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 ad a4 6d f8 bd [ 77.020212][ T22] RSP: 0000:ffffc90000fe7ae8 EFLAGS: 00010282 [ 77.020231][ T22] RAX: 0000000035736376 RBX: ffff888067537528 RCX: ffff88823bde2020 [ 77.020246][ T22] RDX: ffffed100cea6eac RSI: 0000000000000004 RDI: 0000000000000007 [ 77.020261][ T22] RBP: 0000000000000004 R08: 0000000000000000 R09: ffff888067537558 [ 77.020275][ T22] R10: ffffed100cea6eab R11: 0000000000000000 R12: ffff88823bde2020 [ 77.020290][ T22] R13: ffff88823bde2020 R14: ffff888067537558 R15: dffffc0000000000 [ 77.020305][ T22] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 77.020328][ T22] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.020344][ T22] CR2: ffff88823bde2020 CR3: 000000001e4c1000 CR4: 00000000001506e0 [ 77.020359][ T22] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.020372][ T22] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.020386][ T22] Call Trace: [ 77.020394][ T22] d_lookup+0xd8/0x170 [ 77.020415][ T22] lookup_dcache+0x1e/0x130 [ 77.020436][ T22] __lookup_hash+0x29/0x180 [ 77.020457][ T22] kern_path_locked+0x17e/0x320 [ 77.020478][ T22] ? filename_lookup+0x80/0x80 [ 77.020501][ T22] handle_remove+0xa2/0x5fe [ 77.020521][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 77.020544][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 77.020569][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 77.020593][ T22] ? find_held_lock+0x2d/0x110 [ 77.020613][ T22] ? devtmpfsd+0xaa/0x2a3 [ 77.020636][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 77.020657][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 77.020681][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 77.020704][ T22] devtmpfsd+0x1b9/0x2a3 [ 77.020727][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 77.020754][ T22] kthread+0x3e5/0x4d0 [ 77.020776][ T22] ? set_kthread_struct+0x130/0x130 [ 77.020801][ T22] ret_from_fork+0x1f/0x30 [ 77.020826][ T22] ================================================================== [ 77.020835][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 77.021172][ T22] CPU: 1 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 77.021197][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.021210][ T22] Call Trace: [ 77.021217][ T22] dump_stack_lvl+0xcd/0x134 [ 77.021243][ T22] panic+0x2b0/0x6dd [ 77.021266][ T22] ? __warn_printk+0xf3/0xf3 [ 77.021289][ T22] ? kfence_report_error.cold+0x2f3/0xa56 [ 77.021314][ T22] kfence_report_error.cold+0x304/0xa56 [ 77.021338][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 77.021364][ T22] ? kfence_print_object+0x2e0/0x2e0 [ 77.021388][ T22] ? add_lock_to_list.constprop.0+0x185/0x370 [ 77.021412][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 77.021436][ T22] ? d_lookup+0xd8/0x170 [ 77.021458][ T22] ? lookup_dcache+0x1e/0x130 [ 77.021481][ T22] ? __lookup_hash+0x29/0x180 [ 77.021503][ T22] ? kern_path_locked+0x17e/0x320 [ 77.021527][ T22] ? handle_remove+0xa2/0x5fe [ 77.021549][ T22] ? devtmpfsd+0x1b9/0x2a3 [ 77.021574][ T22] ? kthread+0x3e5/0x4d0 [ 77.021598][ T22] ? ret_from_fork+0x1f/0x30 [ 77.021626][ T22] ? mark_lock+0xef/0x17b0 [ 77.021647][ T22] ? mark_lock+0xef/0x17b0 [ 77.021670][ T22] kfence_handle_page_fault+0x203/0x630 [ 77.021694][ T22] ? __sanitizer_cov_trace_cmp8+0x1d/0x70 [ 77.021720][ T22] page_fault_oops+0x1c5/0x6b0 [ 77.021744][ T22] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 77.021770][ T22] ? is_prefetch.constprop.0+0xb7/0x530 [ 77.021795][ T22] ? dump_pagetable+0xc0/0xc0 [ 77.021816][ T22] ? pgtable_bad+0x90/0x90 [ 77.021838][ T22] ? search_module_extables+0xaf/0x100 [ 77.021866][ T22] ? search_exception_tables+0x33/0x50 [ 77.021890][ T22] kernelmode_fixup_or_oops+0x219/0x280 [ 77.021915][ T22] __bad_area_nosemaphore+0x36d/0x400 [ 77.021940][ T22] ? spurious_kernel_fault+0x38d/0x5b0 [ 77.021964][ T22] do_kern_addr_fault+0x5b/0x70 [ 77.021988][ T22] exc_page_fault+0x155/0x180 [ 77.022012][ T22] asm_exc_page_fault+0x1e/0x30 [ 77.022039][ T22] RIP: 0010:kvm_fastop_exception+0xf6a/0x1058 [ 77.022067][ T22] Code: d3 ed e9 67 8d 6d f8 49 8d 0e 48 83 e1 f8 4c 8b 21 41 8d 0e 83 e1 07 c1 e1 03 49 d3 ec e9 bd 9a 6d 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 ad a4 6d f8 bd [ 77.022091][ T22] RSP: 0000:ffffc90000fe7ae8 EFLAGS: 00010282 [ 77.022112][ T22] RAX: 0000000035736376 RBX: ffff888067537528 RCX: ffff88823bde2020 [ 77.022129][ T22] RDX: ffffed100cea6eac RSI: 0000000000000004 RDI: 0000000000000007 [ 77.022151][ T22] RBP: 0000000000000004 R08: 0000000000000000 R09: ffff888067537558 [ 77.022165][ T22] R10: ffffed100cea6eab R11: 0000000000000000 R12: ffff88823bde2020 [ 77.022181][ T22] R13: ffff88823bde2020 R14: ffff888067537558 R15: dffffc0000000000 [ 77.022200][ T22] ? __d_lookup+0x372/0x720 [ 77.022224][ T22] d_lookup+0xd8/0x170 [ 77.022246][ T22] lookup_dcache+0x1e/0x130 [ 77.022269][ T22] __lookup_hash+0x29/0x180 [ 77.022291][ T22] kern_path_locked+0x17e/0x320 [ 77.022315][ T22] ? filename_lookup+0x80/0x80 [ 77.022340][ T22] handle_remove+0xa2/0x5fe [ 77.022363][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 77.022387][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 77.022420][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 77.022447][ T22] ? find_held_lock+0x2d/0x110 [ 77.022469][ T22] ? devtmpfsd+0xaa/0x2a3 [ 77.022494][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 77.022517][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 77.022542][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 77.022567][ T22] devtmpfsd+0x1b9/0x2a3 [ 77.022592][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 77.022620][ T22] kthread+0x3e5/0x4d0 [ 77.022643][ T22] ? set_kthread_struct+0x130/0x130 [ 77.022669][ T22] ret_from_fork+0x1f/0x30 [ 77.023156][ T22] Kernel Offset: disabled