Starting Permit User Sessions... Starting System Logging Service... [ OK ] Started Regular background program processing daemon. Starting getty on tty2-tty6 if dbus and logind are not available... Starting OpenBSD Secure Shell server... [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started System Logging Service. [ OK ] Started Permit User Sessions. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ 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. Starting Load/Save RF Kill Switch Status... [ 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 Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. [ 66.713702][ T22] ================================================================== [ 66.713714][ T22] BUG: KFENCE: use-after-free read in kvm_fastop_exception+0xf6d/0x105b [ 66.713714][ T22] [ 66.713758][ T22] Use-after-free read at 0xffff88823bd32020 (in kfence-#152): [ 66.713772][ T22] kvm_fastop_exception+0xf6d/0x105b [ 66.713791][ T22] d_lookup+0xd8/0x170 [ 66.713811][ T22] lookup_dcache+0x1e/0x130 [ 66.713830][ T22] __lookup_hash+0x29/0x180 [ 66.713850][ T22] kern_path_locked+0x17e/0x320 [ 66.713871][ T22] handle_remove+0xa2/0x5fe [ 66.713893][ T22] devtmpfsd+0x1b9/0x2a3 [ 66.713911][ T22] kthread+0x3e5/0x4d0 [ 66.713931][ T22] ret_from_fork+0x1f/0x30 [ 66.713951][ T22] [ 66.713955][ T22] kfence-#152 [0xffff88823bd32000-0xffff88823bd32fff, size=4096, cache=names_cache] allocated by task 22: [ 66.713991][ T22] getname_kernel+0x4e/0x370 [ 66.714011][ T22] kern_path_locked+0x71/0x320 [ 66.714031][ T22] handle_remove+0xa2/0x5fe [ 66.714050][ T22] devtmpfsd+0x1b9/0x2a3 [ 66.714067][ T22] kthread+0x3e5/0x4d0 [ 66.714085][ T22] ret_from_fork+0x1f/0x30 [ 66.714103][ T22] [ 66.714103][ T22] freed by task 22: [ 66.714127][ T22] putname.part.0+0xe1/0x120 [ 66.714145][ T22] kern_path_locked+0xc2/0x320 [ 66.714165][ T22] handle_remove+0xa2/0x5fe [ 66.714184][ T22] devtmpfsd+0x1b9/0x2a3 [ 66.714201][ T22] kthread+0x3e5/0x4d0 [ 66.714219][ T22] ret_from_fork+0x1f/0x30 [ 66.714237][ T22] [ 66.714241][ T22] CPU: 1 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 66.714262][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.714273][ T22] RIP: 0010:kvm_fastop_exception+0xf6d/0x105b [ 66.714295][ 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 [ 66.714314][ T22] RSP: 0018:ffffc90000dcfae8 EFLAGS: 00010282 [ 66.714331][ T22] RAX: 0000003375736376 RBX: ffff88806ea23ab0 RCX: ffff88823bd32020 [ 66.714351][ T22] RDX: ffffed100dd4475d RSI: 0000000000000005 RDI: 0000000000000007 [ 66.714364][ T22] RBP: 0000000000000005 R08: 0000000000000000 R09: ffff88806ea23ae0 [ 66.714377][ T22] R10: ffffed100dd4475c R11: 0000000000000000 R12: ffff88823bd32020 [ 66.714390][ T22] R13: ffff88823bd32020 R14: ffff88806ea23ae0 R15: dffffc0000000000 [ 66.714404][ T22] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 66.714425][ T22] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.714439][ T22] CR2: ffff88823bd32020 CR3: 000000007402a000 CR4: 00000000001506e0 [ 66.714452][ T22] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.714464][ T22] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.714477][ T22] Call Trace: [ 66.714487][ T22] d_lookup+0xd8/0x170 [ 66.714509][ T22] lookup_dcache+0x1e/0x130 [ 66.714531][ T22] __lookup_hash+0x29/0x180 [ 66.714553][ T22] kern_path_locked+0x17e/0x320 [ 66.714576][ T22] ? filename_lookup+0x80/0x80 [ 66.714603][ T22] handle_remove+0xa2/0x5fe [ 66.714626][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 66.714652][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 66.714675][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 66.714701][ T22] ? find_held_lock+0x2d/0x110 [ 66.714721][ T22] ? devtmpfsd+0xaa/0x2a3 [ 66.714740][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 66.714760][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 66.714782][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 66.714806][ T22] devtmpfsd+0x1b9/0x2a3 [ 66.714826][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 66.714849][ T22] kthread+0x3e5/0x4d0 [ 66.714870][ T22] ? set_kthread_struct+0x130/0x130 [ 66.714893][ T22] ret_from_fork+0x1f/0x30 [ 66.714919][ T22] ================================================================== [ 66.714927][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 66.715151][ T22] CPU: 1 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 66.715172][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.715183][ T22] Call Trace: [ 66.715190][ T22] dump_stack_lvl+0xcd/0x134 [ 66.715213][ T22] panic+0x2b0/0x6dd [ 66.715233][ T22] ? __warn_printk+0xf3/0xf3 [ 66.715263][ T22] ? kfence_report_error.cold+0x2f3/0xa56 [ 66.715298][ T22] kfence_report_error.cold+0x304/0xa56 [ 66.715327][ T22] ? kvm_fastop_exception+0xf6d/0x105b [ 66.715362][ T22] ? kfence_print_object+0x350/0x350 [ 66.715387][ T22] ? add_lock_to_list.constprop.0+0x185/0x370 [ 66.715410][ T22] ? kvm_fastop_exception+0xf6d/0x105b [ 66.715430][ T22] ? d_lookup+0xd8/0x170 [ 66.715450][ T22] ? lookup_dcache+0x1e/0x130 [ 66.715472][ T22] ? __lookup_hash+0x29/0x180 [ 66.715493][ T22] ? kern_path_locked+0x17e/0x320 [ 66.715517][ T22] ? handle_remove+0xa2/0x5fe [ 66.715539][ T22] ? devtmpfsd+0x1b9/0x2a3 [ 66.715559][ T22] ? kthread+0x3e5/0x4d0 [ 66.715580][ T22] ? ret_from_fork+0x1f/0x30 [ 66.715644][ T22] ? mark_lock+0xef/0x17b0 [ 66.715676][ T22] kfence_handle_page_fault+0x203/0x630 [ 66.715707][ T22] page_fault_oops+0x1c5/0x6b0 [ 66.715729][ T22] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 66.715755][ T22] ? is_prefetch.constprop.0+0xb7/0x530 [ 66.715777][ T22] ? dump_pagetable+0xc0/0xc0 [ 66.715799][ T22] ? pgtable_bad+0x90/0x90 [ 66.715823][ T22] ? search_bpf_extables+0x1d1/0x2f0 [ 66.715845][ T22] ? kvm_fastop_exception+0xf6d/0x105b [ 66.715873][ T22] kernelmode_fixup_or_oops+0x219/0x280 [ 66.715900][ T22] __bad_area_nosemaphore+0x36d/0x400 [ 66.715924][ T22] ? spurious_kernel_fault+0x38d/0x5b0 [ 66.715951][ T22] do_kern_addr_fault+0x5b/0x70 [ 66.715975][ T22] exc_page_fault+0x155/0x180 [ 66.715998][ T22] asm_exc_page_fault+0x1e/0x30 [ 66.716020][ T22] RIP: 0010:kvm_fastop_exception+0xf6d/0x105b [ 66.716043][ 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 [ 66.716063][ T22] RSP: 0018:ffffc90000dcfae8 EFLAGS: 00010282 [ 66.716081][ T22] RAX: 0000003375736376 RBX: ffff88806ea23ab0 RCX: ffff88823bd32020 [ 66.716096][ T22] RDX: ffffed100dd4475d RSI: 0000000000000005 RDI: 0000000000000007 [ 66.716110][ T22] RBP: 0000000000000005 R08: 0000000000000000 R09: ffff88806ea23ae0 [ 66.716124][ T22] R10: ffffed100dd4475c R11: 0000000000000000 R12: ffff88823bd32020 [ 66.716138][ T22] R13: ffff88823bd32020 R14: ffff88806ea23ae0 R15: dffffc0000000000 [ 66.716169][ T22] ? __d_lookup+0x372/0x720 [ 66.716202][ T22] d_lookup+0xd8/0x170 [ 66.716227][ T22] lookup_dcache+0x1e/0x130 [ 66.716251][ T22] __lookup_hash+0x29/0x180 [ 66.716277][ T22] kern_path_locked+0x17e/0x320 [ 66.716302][ T22] ? filename_lookup+0x80/0x80 [ 66.716366][ T22] handle_remove+0xa2/0x5fe [ 66.716394][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 66.716424][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 66.716448][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 66.716482][ T22] ? find_held_lock+0x2d/0x110 [ 66.716507][ T22] ? devtmpfsd+0xaa/0x2a3 [ 66.716528][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 66.716550][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 66.716574][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 66.716606][ T22] devtmpfsd+0x1b9/0x2a3 [ 66.716631][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 66.716657][ T22] kthread+0x3e5/0x4d0 [ 66.716679][ T22] ? set_kthread_struct+0x130/0x130 [ 66.716706][ T22] ret_from_fork+0x1f/0x30 [ 66.717114][ T22] Kernel Offset: disabled