[ 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... [ OK ] Started Load/Save RF Kill Switch Status. [ 67.294078][ T22] ================================================================== [ 67.294091][ T22] BUG: KFENCE: use-after-free read in kvm_fastop_exception+0xf6a/0x1058 [ 67.294091][ T22] [ 67.294142][ T22] Use-after-free read at 0xffff88823bd32020 (in kfence-#152): [ 67.294156][ T22] kvm_fastop_exception+0xf6a/0x1058 [ 67.294176][ T22] d_lookup+0xd8/0x170 [ 67.294197][ T22] lookup_dcache+0x1e/0x130 [ 67.294217][ T22] __lookup_hash+0x29/0x180 [ 67.294240][ T22] kern_path_locked+0x17e/0x320 [ 67.294266][ T22] handle_remove+0xa2/0x5fe [ 67.294292][ T22] devtmpfsd+0x1b9/0x2a3 [ 67.294316][ T22] kthread+0x3e5/0x4d0 [ 67.294340][ T22] ret_from_fork+0x1f/0x30 [ 67.294365][ T22] [ 67.294369][ T22] kfence-#152: 0xffff88823bd32000-0xffff88823bd32fff, size=4096, cache=names_cache [ 67.294369][ T22] [ 67.294392][ T22] allocated by task 22 on cpu 0 at 67.293860s: [ 67.294434][ T22] getname_kernel+0x4e/0x370 [ 67.294458][ T22] kern_path_locked+0x71/0x320 [ 67.294482][ T22] handle_remove+0xa2/0x5fe [ 67.294507][ T22] devtmpfsd+0x1b9/0x2a3 [ 67.294528][ T22] kthread+0x3e5/0x4d0 [ 67.294550][ T22] ret_from_fork+0x1f/0x30 [ 67.294572][ T22] [ 67.294576][ T22] freed by task 22 on cpu 0 at 67.293880s: [ 67.294614][ T22] putname.part.0+0xe1/0x120 [ 67.294634][ T22] kern_path_locked+0xc2/0x320 [ 67.294656][ T22] handle_remove+0xa2/0x5fe [ 67.294678][ T22] devtmpfsd+0x1b9/0x2a3 [ 67.294699][ T22] kthread+0x3e5/0x4d0 [ 67.294721][ T22] ret_from_fork+0x1f/0x30 [ 67.294741][ T22] [ 67.294747][ T22] CPU: 0 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 67.294770][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.294783][ T22] RIP: 0010:kvm_fastop_exception+0xf6a/0x1058 [ 67.294810][ T22] Code: d3 ed e9 bf d9 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 15 e7 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 05 f1 6e f8 bd [ 67.294833][ T22] RSP: 0018:ffffc90000dcfae8 EFLAGS: 00010282 [ 67.294853][ T22] RAX: 0000000032736376 RBX: ffff88806cd17da0 RCX: ffff88823bd32020 [ 67.294871][ T22] RDX: ffffed100d9a2fbb RSI: 0000000000000004 RDI: 0000000000000007 [ 67.294886][ T22] RBP: 0000000000000004 R08: 0000000000000000 R09: ffff88806cd17dd0 [ 67.294902][ T22] R10: ffffed100d9a2fba R11: 0000000000000000 R12: ffff88823bd32020 [ 67.294916][ T22] R13: ffff88823bd32020 R14: ffff88806cd17dd0 R15: dffffc0000000000 [ 67.294934][ T22] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 67.294958][ T22] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.294975][ T22] CR2: ffff88823bd32020 CR3: 000000000b68e000 CR4: 00000000001506f0 [ 67.294992][ T22] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.295006][ T22] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.295022][ T22] Call Trace: [ 67.295034][ T22] d_lookup+0xd8/0x170 [ 67.295061][ T22] lookup_dcache+0x1e/0x130 [ 67.295087][ T22] __lookup_hash+0x29/0x180 [ 67.295113][ T22] kern_path_locked+0x17e/0x320 [ 67.295141][ T22] ? filename_lookup+0x80/0x80 [ 67.295173][ T22] handle_remove+0xa2/0x5fe [ 67.295202][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 67.295234][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 67.295262][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 67.295302][ T22] ? find_held_lock+0x2d/0x110 [ 67.295326][ T22] ? devtmpfsd+0xaa/0x2a3 [ 67.295351][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 67.295375][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 67.295401][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 67.295490][ T22] devtmpfsd+0x1b9/0x2a3 [ 67.295517][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 67.295544][ T22] kthread+0x3e5/0x4d0 [ 67.295569][ T22] ? set_kthread_struct+0x130/0x130 [ 67.295597][ T22] ret_from_fork+0x1f/0x30 [ 67.295628][ T22] ================================================================== [ 67.295638][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 67.295985][ T22] CPU: 0 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 67.296014][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.296029][ T22] Call Trace: [ 67.296039][ T22] dump_stack_lvl+0xcd/0x134 [ 67.296071][ T22] panic+0x2b0/0x6dd [ 67.296097][ T22] ? __warn_printk+0xf3/0xf3 [ 67.296135][ T22] ? kfence_report_error.cold+0x2f3/0xa56 [ 67.296172][ T22] kfence_report_error.cold+0x304/0xa56 [ 67.296202][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 67.296245][ T22] ? kfence_print_object+0x2e0/0x2e0 [ 67.296342][ T22] ? add_lock_to_list.constprop.0+0x185/0x370 [ 67.296370][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 67.296392][ T22] ? d_lookup+0xd8/0x170 [ 67.296415][ T22] ? lookup_dcache+0x1e/0x130 [ 67.296441][ T22] ? __lookup_hash+0x29/0x180 [ 67.296465][ T22] ? kern_path_locked+0x17e/0x320 [ 67.296492][ T22] ? handle_remove+0xa2/0x5fe [ 67.296522][ T22] ? devtmpfsd+0x1b9/0x2a3 [ 67.296549][ T22] ? kthread+0x3e5/0x4d0 [ 67.296577][ T22] ? ret_from_fork+0x1f/0x30 [ 67.296658][ T22] ? mark_lock+0xef/0x17b0 [ 67.296700][ T22] kfence_handle_page_fault+0x203/0x630 [ 67.296738][ T22] page_fault_oops+0x1c5/0x6b0 [ 67.296765][ T22] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 67.296797][ T22] ? is_prefetch.constprop.0+0xb7/0x530 [ 67.296825][ T22] ? dump_pagetable+0xc0/0xc0 [ 67.296851][ T22] ? pgtable_bad+0x90/0x90 [ 67.296881][ T22] ? search_bpf_extables+0x1d1/0x2f0 [ 67.296908][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 67.296941][ T22] kernelmode_fixup_or_oops+0x219/0x280 [ 67.296968][ T22] __bad_area_nosemaphore+0x36d/0x400 [ 67.296994][ T22] ? spurious_kernel_fault+0x38d/0x5b0 [ 67.297022][ T22] do_kern_addr_fault+0x5b/0x70 [ 67.297049][ T22] exc_page_fault+0x155/0x180 [ 67.297076][ T22] asm_exc_page_fault+0x1e/0x30 [ 67.297103][ T22] RIP: 0010:kvm_fastop_exception+0xf6a/0x1058 [ 67.297132][ T22] Code: d3 ed e9 bf d9 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 15 e7 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 05 f1 6e f8 bd [ 67.297155][ T22] RSP: 0018:ffffc90000dcfae8 EFLAGS: 00010282 [ 67.297178][ T22] RAX: 0000000032736376 RBX: ffff88806cd17da0 RCX: ffff88823bd32020 [ 67.297196][ T22] RDX: ffffed100d9a2fbb RSI: 0000000000000004 RDI: 0000000000000007 [ 67.297211][ T22] RBP: 0000000000000004 R08: 0000000000000000 R09: ffff88806cd17dd0 [ 67.297226][ T22] R10: ffffed100d9a2fba R11: 0000000000000000 R12: ffff88823bd32020 [ 67.297243][ T22] R13: ffff88823bd32020 R14: ffff88806cd17dd0 R15: dffffc0000000000 [ 67.297293][ T22] ? __d_lookup+0x372/0x720 [ 67.297336][ T22] d_lookup+0xd8/0x170 [ 67.297368][ T22] lookup_dcache+0x1e/0x130 [ 67.297398][ T22] __lookup_hash+0x29/0x180 [ 67.297430][ T22] kern_path_locked+0x17e/0x320 [ 67.297461][ T22] ? filename_lookup+0x80/0x80 [ 67.297507][ T22] handle_remove+0xa2/0x5fe [ 67.297549][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 67.297587][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 67.297618][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 67.297657][ T22] ? find_held_lock+0x2d/0x110 [ 67.297688][ T22] ? devtmpfsd+0xaa/0x2a3 [ 67.297713][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 67.297738][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 67.297766][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 67.297803][ T22] devtmpfsd+0x1b9/0x2a3 [ 67.297832][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 67.297859][ T22] kthread+0x3e5/0x4d0 [ 67.297882][ T22] ? set_kthread_struct+0x130/0x130 [ 67.297911][ T22] ret_from_fork+0x1f/0x30 [ 67.298417][ T22] Kernel Offset: disabled [ 68.055629][ T22] Rebooting in 86400 seconds..