Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ 63.942978][ T22] ================================================================== [ 63.942990][ T22] BUG: KFENCE: use-after-free read in kvm_fastop_exception+0xf6a/0x1058 [ 63.942990][ T22] [ 63.943025][ T22] Use-after-free read at 0xffff88823bcec020 (in kfence-#117): [ 63.943040][ T22] kvm_fastop_exception+0xf6a/0x1058 [ 63.943059][ T22] d_lookup+0xd8/0x170 [ 63.943082][ T22] lookup_dcache+0x1e/0x130 [ 63.943103][ T22] __lookup_hash+0x29/0x180 [ 63.943124][ T22] kern_path_locked+0x17e/0x320 [ 63.943148][ T22] handle_remove+0xa2/0x5fe [ 63.943172][ T22] devtmpfsd+0x1b9/0x2a3 [ 63.943193][ T22] kthread+0x3e5/0x4d0 [ 63.943215][ T22] ret_from_fork+0x1f/0x30 [ 63.943236][ T22] [ 63.943239][ T22] kfence-#117 [0xffff88823bcec000-0xffff88823bcecfff, size=4096, cache=names_cache] allocated by task 22: [ 63.943285][ T22] getname_kernel+0x4e/0x370 [ 63.943308][ T22] kern_path_locked+0x71/0x320 [ 63.943332][ T22] handle_remove+0xa2/0x5fe [ 63.943355][ T22] devtmpfsd+0x1b9/0x2a3 [ 63.943374][ T22] kthread+0x3e5/0x4d0 [ 63.943393][ T22] ret_from_fork+0x1f/0x30 [ 63.943412][ T22] [ 63.943412][ T22] freed by task 22: [ 63.943437][ T22] putname.part.0+0xe1/0x120 [ 63.943458][ T22] kern_path_locked+0xc2/0x320 [ 63.943480][ T22] handle_remove+0xa2/0x5fe [ 63.943502][ T22] devtmpfsd+0x1b9/0x2a3 [ 63.943521][ T22] kthread+0x3e5/0x4d0 [ 63.943541][ T22] ret_from_fork+0x1f/0x30 [ 63.943567][ T22] [ 63.943571][ T22] CPU: 1 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 63.943593][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.943605][ T22] RIP: 0010:kvm_fastop_exception+0xf6a/0x1058 [ 63.943630][ T22] Code: d3 ed e9 df 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 35 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 25 ea 6e f8 bd [ 63.943649][ T22] RSP: 0018:ffffc90000dcfae8 EFLAGS: 00010282 [ 63.943668][ T22] RAX: 0000000033736376 RBX: ffff88806e502a88 RCX: ffff88823bcec020 [ 63.943682][ T22] RDX: ffffed100dca0558 RSI: 0000000000000004 RDI: 0000000000000007 [ 63.943696][ T22] RBP: 0000000000000004 R08: 0000000000000000 R09: ffff88806e502ab8 [ 63.943708][ T22] R10: ffffed100dca0557 R11: 0000000000000000 R12: ffff88823bcec020 [ 63.943722][ T22] R13: ffff88823bcec020 R14: ffff88806e502ab8 R15: dffffc0000000000 [ 63.943735][ T22] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 63.943755][ T22] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.943768][ T22] CR2: ffff88823bcec020 CR3: 000000000b68e000 CR4: 00000000001506e0 [ 63.943781][ T22] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.943794][ T22] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.943806][ T22] Call Trace: [ 63.943818][ T22] d_lookup+0xd8/0x170 [ 63.943841][ T22] lookup_dcache+0x1e/0x130 [ 63.943865][ T22] __lookup_hash+0x29/0x180 [ 63.943887][ T22] kern_path_locked+0x17e/0x320 [ 63.943912][ T22] ? filename_lookup+0x80/0x80 [ 63.943940][ T22] handle_remove+0xa2/0x5fe [ 63.943966][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 63.943994][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 63.944019][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 63.944046][ T22] ? find_held_lock+0x2d/0x110 [ 63.944067][ T22] ? devtmpfsd+0xaa/0x2a3 [ 63.944088][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 63.944108][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 63.944131][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 63.944154][ T22] devtmpfsd+0x1b9/0x2a3 [ 63.944174][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 63.944196][ T22] kthread+0x3e5/0x4d0 [ 63.944217][ T22] ? set_kthread_struct+0x130/0x130 [ 63.944241][ T22] ret_from_fork+0x1f/0x30 [ 63.944268][ T22] ================================================================== [ 63.944276][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 63.944599][ T22] CPU: 1 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 63.944623][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.944635][ T22] Call Trace: [ 63.944644][ T22] dump_stack_lvl+0xcd/0x134 [ 63.944671][ T22] panic+0x2b0/0x6dd [ 63.944693][ T22] ? __warn_printk+0xf3/0xf3 [ 63.944725][ T22] ? kfence_report_error.cold+0x2f3/0xa56 [ 63.944755][ T22] kfence_report_error.cold+0x304/0xa56 [ 63.944781][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 63.944807][ T22] ? kfence_print_object+0x350/0x350 [ 63.944835][ T22] ? add_lock_to_list.constprop.0+0x185/0x370 [ 63.944858][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 63.944881][ T22] ? d_lookup+0xd8/0x170 [ 63.944903][ T22] ? lookup_dcache+0x1e/0x130 [ 63.944925][ T22] ? __lookup_hash+0x29/0x180 [ 63.944948][ T22] ? kern_path_locked+0x17e/0x320 [ 63.944972][ T22] ? handle_remove+0xa2/0x5fe [ 63.944997][ T22] ? devtmpfsd+0x1b9/0x2a3 [ 63.945019][ T22] ? kthread+0x3e5/0x4d0 [ 63.945042][ T22] ? ret_from_fork+0x1f/0x30 [ 63.945114][ T22] ? mark_lock+0xef/0x17b0 [ 63.945151][ T22] kfence_handle_page_fault+0x203/0x630 [ 63.945183][ T22] page_fault_oops+0x1c5/0x6b0 [ 63.945207][ T22] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 63.945234][ T22] ? is_prefetch.constprop.0+0xb7/0x530 [ 63.945259][ T22] ? dump_pagetable+0xc0/0xc0 [ 63.945282][ T22] ? pgtable_bad+0x90/0x90 [ 63.945308][ T22] ? search_bpf_extables+0x1d1/0x2f0 [ 63.945332][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 63.945362][ T22] kernelmode_fixup_or_oops+0x219/0x280 [ 63.945390][ T22] __bad_area_nosemaphore+0x36d/0x400 [ 63.945420][ T22] ? spurious_kernel_fault+0x38d/0x5b0 [ 63.945447][ T22] do_kern_addr_fault+0x5b/0x70 [ 63.945472][ T22] exc_page_fault+0x155/0x180 [ 63.945497][ T22] asm_exc_page_fault+0x1e/0x30 [ 63.945522][ T22] RIP: 0010:kvm_fastop_exception+0xf6a/0x1058 [ 63.945545][ T22] Code: d3 ed e9 df 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 35 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 25 ea 6e f8 bd [ 63.945571][ T22] RSP: 0018:ffffc90000dcfae8 EFLAGS: 00010282 [ 63.945591][ T22] RAX: 0000000033736376 RBX: ffff88806e502a88 RCX: ffff88823bcec020 [ 63.945606][ T22] RDX: ffffed100dca0558 RSI: 0000000000000004 RDI: 0000000000000007 [ 63.945621][ T22] RBP: 0000000000000004 R08: 0000000000000000 R09: ffff88806e502ab8 [ 63.945635][ T22] R10: ffffed100dca0557 R11: 0000000000000000 R12: ffff88823bcec020 [ 63.945648][ T22] R13: ffff88823bcec020 R14: ffff88806e502ab8 R15: dffffc0000000000 [ 63.945682][ T22] ? __d_lookup+0x372/0x720 [ 63.945721][ T22] d_lookup+0xd8/0x170 [ 63.945751][ T22] lookup_dcache+0x1e/0x130 [ 63.945778][ T22] __lookup_hash+0x29/0x180 [ 63.945808][ T22] kern_path_locked+0x17e/0x320 [ 63.945837][ T22] ? filename_lookup+0x80/0x80 [ 63.945879][ T22] handle_remove+0xa2/0x5fe [ 63.945912][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 63.945945][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 63.945972][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 63.946010][ T22] ? find_held_lock+0x2d/0x110 [ 63.946039][ T22] ? devtmpfsd+0xaa/0x2a3 [ 63.946062][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 63.946088][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 63.946113][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 63.946148][ T22] devtmpfsd+0x1b9/0x2a3 [ 63.946176][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 63.946205][ T22] kthread+0x3e5/0x4d0 [ 63.946230][ T22] ? set_kthread_struct+0x130/0x130 [ 63.946262][ T22] ret_from_fork+0x1f/0x30 [ 63.946729][ T22] Kernel Offset: disabled