Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ 63.741513][ T22] ================================================================== [ 63.741526][ T22] BUG: KFENCE: use-after-free read in kvm_fastop_exception+0xf6a/0x1058 [ 63.741526][ T22] [ 63.741562][ T22] Use-after-free read at 0xffff88823bd02020 (in kfence-#128): [ 63.741577][ T22] kvm_fastop_exception+0xf6a/0x1058 [ 63.741598][ T22] d_lookup+0xd8/0x170 [ 63.741621][ T22] lookup_dcache+0x1e/0x130 [ 63.741643][ T22] __lookup_hash+0x29/0x180 [ 63.741665][ T22] kern_path_locked+0x17e/0x320 [ 63.741689][ T22] handle_remove+0xa2/0x5fe [ 63.741715][ T22] devtmpfsd+0x1b9/0x2a3 [ 63.741736][ T22] kthread+0x3e5/0x4d0 [ 63.741760][ T22] ret_from_fork+0x1f/0x30 [ 63.741782][ T22] [ 63.741786][ T22] kfence-#128 [0xffff88823bd02000-0xffff88823bd02fff, size=4096, cache=names_cache] allocated by task 22: [ 63.741827][ T22] getname_kernel+0x4e/0x370 [ 63.741850][ T22] kern_path_locked+0x71/0x320 [ 63.741874][ T22] handle_remove+0xa2/0x5fe [ 63.741897][ T22] devtmpfsd+0x1b9/0x2a3 [ 63.741916][ T22] kthread+0x3e5/0x4d0 [ 63.741937][ T22] ret_from_fork+0x1f/0x30 [ 63.741957][ T22] [ 63.741957][ T22] freed by task 22: [ 63.741984][ T22] putname.part.0+0xe1/0x120 [ 63.742005][ T22] kern_path_locked+0xc2/0x320 [ 63.742027][ T22] handle_remove+0xa2/0x5fe [ 63.742049][ T22] devtmpfsd+0x1b9/0x2a3 [ 63.742066][ T22] kthread+0x3e5/0x4d0 [ 63.742086][ T22] ret_from_fork+0x1f/0x30 [ 63.742103][ T22] [ 63.742108][ T22] CPU: 1 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 63.742155][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.742167][ T22] RIP: 0010:kvm_fastop_exception+0xf6a/0x1058 [ 63.742191][ T22] Code: d3 ed e9 bf d2 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 e0 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 ea 6e f8 bd [ 63.742211][ T22] RSP: 0018:ffffc90000dcfae8 EFLAGS: 00010282 [ 63.742230][ T22] RAX: 0000000032736376 RBX: ffff88806f7ca4a8 RCX: ffff88823bd02020 [ 63.742246][ T22] RDX: ffffed100def949c RSI: 0000000000000004 RDI: 0000000000000007 [ 63.742259][ T22] RBP: 0000000000000004 R08: 0000000000000000 R09: ffff88806f7ca4d8 [ 63.742272][ T22] R10: ffffed100def949b R11: 0000000000000001 R12: ffff88823bd02020 [ 63.742287][ T22] R13: ffff88823bd02020 R14: ffff88806f7ca4d8 R15: dffffc0000000000 [ 63.742303][ T22] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 63.742324][ T22] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.742338][ T22] CR2: ffff88823bd02020 CR3: 00000000718b8000 CR4: 00000000001506e0 [ 63.742352][ T22] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.742365][ T22] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.742378][ T22] Call Trace: [ 63.742390][ T22] d_lookup+0xd8/0x170 [ 63.742416][ T22] lookup_dcache+0x1e/0x130 [ 63.742441][ T22] __lookup_hash+0x29/0x180 [ 63.742466][ T22] kern_path_locked+0x17e/0x320 [ 63.742492][ T22] ? filename_lookup+0x80/0x80 [ 63.742523][ T22] handle_remove+0xa2/0x5fe [ 63.742551][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 63.742581][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 63.742605][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 63.742632][ T22] ? find_held_lock+0x2d/0x110 [ 63.742654][ T22] ? devtmpfsd+0xaa/0x2a3 [ 63.742676][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 63.742698][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 63.742723][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 63.742752][ T22] devtmpfsd+0x1b9/0x2a3 [ 63.742775][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 63.742801][ T22] kthread+0x3e5/0x4d0 [ 63.742823][ T22] ? set_kthread_struct+0x130/0x130 [ 63.742849][ T22] ret_from_fork+0x1f/0x30 [ 63.742877][ T22] ================================================================== [ 63.742885][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 63.743151][ T22] CPU: 1 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 63.743174][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.743186][ T22] Call Trace: [ 63.743195][ T22] dump_stack_lvl+0xcd/0x134 [ 63.743221][ T22] panic+0x2b0/0x6dd [ 63.743243][ T22] ? __warn_printk+0xf3/0xf3 [ 63.743277][ T22] ? kfence_report_error.cold+0x2f3/0xa56 [ 63.743310][ T22] kfence_report_error.cold+0x304/0xa56 [ 63.743336][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 63.743364][ T22] ? kfence_print_object+0x350/0x350 [ 63.743390][ T22] ? add_lock_to_list.constprop.0+0x185/0x370 [ 63.743411][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 63.743429][ T22] ? d_lookup+0xd8/0x170 [ 63.743450][ T22] ? lookup_dcache+0x1e/0x130 [ 63.743474][ T22] ? __lookup_hash+0x29/0x180 [ 63.743499][ T22] ? kern_path_locked+0x17e/0x320 [ 63.743526][ T22] ? handle_remove+0xa2/0x5fe [ 63.743552][ T22] ? devtmpfsd+0x1b9/0x2a3 [ 63.743575][ T22] ? kthread+0x3e5/0x4d0 [ 63.743600][ T22] ? ret_from_fork+0x1f/0x30 [ 63.743699][ T22] kfence_handle_page_fault+0x203/0x630 [ 63.743734][ T22] page_fault_oops+0x1c5/0x6b0 [ 63.743759][ T22] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 63.743788][ T22] ? is_prefetch.constprop.0+0xb7/0x530 [ 63.743812][ T22] ? dump_pagetable+0xc0/0xc0 [ 63.743836][ T22] ? pgtable_bad+0x90/0x90 [ 63.743863][ T22] ? search_bpf_extables+0x1d1/0x2f0 [ 63.743886][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 63.743917][ T22] kernelmode_fixup_or_oops+0x219/0x280 [ 63.743947][ T22] __bad_area_nosemaphore+0x36d/0x400 [ 63.743974][ T22] ? spurious_kernel_fault+0x38d/0x5b0 [ 63.744005][ T22] do_kern_addr_fault+0x5b/0x70 [ 63.744032][ T22] exc_page_fault+0x155/0x180 [ 63.744059][ T22] asm_exc_page_fault+0x1e/0x30 [ 63.744084][ T22] RIP: 0010:kvm_fastop_exception+0xf6a/0x1058 [ 63.744114][ T22] Code: d3 ed e9 bf d2 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 e0 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 ea 6e f8 bd [ 63.744136][ T22] RSP: 0018:ffffc90000dcfae8 EFLAGS: 00010282 [ 63.744158][ T22] RAX: 0000000032736376 RBX: ffff88806f7ca4a8 RCX: ffff88823bd02020 [ 63.744175][ T22] RDX: ffffed100def949c RSI: 0000000000000004 RDI: 0000000000000007 [ 63.744191][ T22] RBP: 0000000000000004 R08: 0000000000000000 R09: ffff88806f7ca4d8 [ 63.744206][ T22] R10: ffffed100def949b R11: 0000000000000001 R12: ffff88823bd02020 [ 63.744222][ T22] R13: ffff88823bd02020 R14: ffff88806f7ca4d8 R15: dffffc0000000000 [ 63.744258][ T22] ? __d_lookup+0x372/0x720 [ 63.744298][ T22] d_lookup+0xd8/0x170 [ 63.744326][ T22] lookup_dcache+0x1e/0x130 [ 63.744354][ T22] __lookup_hash+0x29/0x180 [ 63.744385][ T22] kern_path_locked+0x17e/0x320 [ 63.744415][ T22] ? filename_lookup+0x80/0x80 [ 63.744459][ T22] handle_remove+0xa2/0x5fe [ 63.744491][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 63.744526][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 63.744554][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 63.744592][ T22] ? find_held_lock+0x2d/0x110 [ 63.744620][ T22] ? devtmpfsd+0xaa/0x2a3 [ 63.744644][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 63.744669][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 63.744697][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 63.744735][ T22] devtmpfsd+0x1b9/0x2a3 [ 63.744764][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 63.744792][ T22] kthread+0x3e5/0x4d0 [ 63.744817][ T22] ? set_kthread_struct+0x130/0x130 [ 63.744848][ T22] ret_from_fork+0x1f/0x30 [ 63.745258][ T22] Kernel Offset: disabled