Warning: Permanently added '10.128.0.35' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 241.915862][ T22] ================================================================== [ 241.923967][ T22] BUG: KFENCE: use-after-free read in kvm_fastop_exception+0xf6a/0x1058 [ 241.923967][ T22] [ 241.934689][ T22] Use-after-free read at 0xffff88823bd9a020 (in kfence-#204): [ 241.942144][ T22] kvm_fastop_exception+0xf6a/0x1058 [ 241.947438][ T22] d_lookup+0xd8/0x170 [ 241.951589][ T22] lookup_dcache+0x1e/0x130 [ 241.956093][ T22] __lookup_hash+0x29/0x180 [ 241.960588][ T22] kern_path_locked+0x17e/0x320 [ 241.965433][ T22] handle_remove+0xa2/0x5fe [ 241.969959][ T22] devtmpfsd+0x1b9/0x2a3 [ 241.974215][ T22] kthread+0x3e5/0x4d0 [ 241.978335][ T22] ret_from_fork+0x1f/0x30 [ 241.982756][ T22] [ 241.985245][ T22] kfence-#204: 0xffff88823bd9a000-0xffff88823bd9afff, size=4096, cache=names_cache [ 241.985245][ T22] [ 241.997393][ T22] allocated by task 22 on cpu 0 at 241.915671s: [ 242.003770][ T22] getname_kernel+0x4e/0x370 [ 242.008361][ T22] kern_path_locked+0x71/0x320 [ 242.013147][ T22] handle_remove+0xa2/0x5fe [ 242.017668][ T22] devtmpfsd+0x1b9/0x2a3 [ 242.021910][ T22] kthread+0x3e5/0x4d0 [ 242.025978][ T22] ret_from_fork+0x1f/0x30 [ 242.030388][ T22] [ 242.032711][ T22] freed by task 22 on cpu 0 at 241.915704s: [ 242.038614][ T22] putname.part.0+0xe1/0x120 [ 242.043199][ T22] kern_path_locked+0xc2/0x320 [ 242.047959][ T22] handle_remove+0xa2/0x5fe [ 242.052461][ T22] devtmpfsd+0x1b9/0x2a3 [ 242.056717][ T22] kthread+0x3e5/0x4d0 [ 242.060781][ T22] ret_from_fork+0x1f/0x30 [ 242.065198][ T22] [ 242.067510][ T22] CPU: 0 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 242.075231][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 242.085537][ T22] RIP: 0010:kvm_fastop_exception+0xf6a/0x1058 [ 242.091609][ 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 [ 242.111212][ T22] RSP: 0018:ffffc90000dcfae8 EFLAGS: 00010282 [ 242.117275][ T22] RAX: 00003231706f6f6c RBX: ffff8880180c8ef0 RCX: ffff88823bd9a020 [ 242.125258][ T22] RDX: ffffed10030191e5 RSI: 0000000000000006 RDI: 0000000000000007 [ 242.133220][ T22] RBP: 0000000000000006 R08: 0000000000000000 R09: ffff8880180c8f20 [ 242.141203][ T22] R10: ffffed10030191e4 R11: 0000000000000000 R12: ffff88823bd9a020 [ 242.149168][ T22] R13: ffff88823bd9a020 R14: ffff8880180c8f20 R15: dffffc0000000000 [ 242.157135][ T22] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 242.166066][ T22] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 242.172644][ T22] CR2: ffff88823bd9a020 CR3: 000000006fa35000 CR4: 00000000001506f0 [ 242.180616][ T22] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 242.188579][ T22] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 242.196562][ T22] Call Trace: [ 242.199843][ T22] d_lookup+0xd8/0x170 [ 242.203916][ T22] lookup_dcache+0x1e/0x130 [ 242.208420][ T22] __lookup_hash+0x29/0x180 [ 242.212924][ T22] kern_path_locked+0x17e/0x320 [ 242.217865][ T22] ? filename_lookup+0x80/0x80 [ 242.222634][ T22] handle_remove+0xa2/0x5fe [ 242.227135][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 242.232859][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 242.238912][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 242.244792][ T22] ? find_held_lock+0x2d/0x110 [ 242.249565][ T22] ? devtmpfsd+0xaa/0x2a3 [ 242.253891][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 242.258753][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 242.263777][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 242.268723][ T22] devtmpfsd+0x1b9/0x2a3 [ 242.272964][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 242.278549][ T22] kthread+0x3e5/0x4d0 [ 242.282720][ T22] ? set_kthread_struct+0x130/0x130 [ 242.287927][ T22] ret_from_fork+0x1f/0x30 [ 242.292350][ T22] ================================================================== [ 242.300400][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 242.307516][ T22] CPU: 0 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 242.315256][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 242.325309][ T22] Call Trace: [ 242.328587][ T22] dump_stack_lvl+0xcd/0x134 [ 242.333242][ T22] panic+0x2b0/0x6dd [ 242.337172][ T22] ? __warn_printk+0xf3/0xf3 [ 242.341774][ T22] ? kfence_report_error.cold+0x2f3/0xa56 [ 242.347518][ T22] kfence_report_error.cold+0x304/0xa56 [ 242.353084][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 242.358553][ T22] ? kfence_print_object+0x2e0/0x2e0 [ 242.363848][ T22] ? add_lock_to_list.constprop.0+0x185/0x370 [ 242.369919][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 242.375379][ T22] ? d_lookup+0xd8/0x170 [ 242.379624][ T22] ? lookup_dcache+0x1e/0x130 [ 242.384303][ T22] ? __lookup_hash+0x29/0x180 [ 242.388983][ T22] ? kern_path_locked+0x17e/0x320 [ 242.394009][ T22] ? handle_remove+0xa2/0x5fe [ 242.398694][ T22] ? devtmpfsd+0x1b9/0x2a3 [ 242.403115][ T22] ? kthread+0x3e5/0x4d0 [ 242.407378][ T22] ? ret_from_fork+0x1f/0x30 [ 242.412016][ T22] ? mark_lock+0xef/0x17b0 [ 242.416459][ T22] kfence_handle_page_fault+0x203/0x630 [ 242.422046][ T22] page_fault_oops+0x1c5/0x6b0 [ 242.426862][ T22] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 242.433178][ T22] ? is_prefetch.constprop.0+0xb7/0x530 [ 242.438737][ T22] ? dump_pagetable+0xc0/0xc0 [ 242.443417][ T22] ? pgtable_bad+0x90/0x90 [ 242.447839][ T22] ? search_bpf_extables+0x1d1/0x2f0 [ 242.453250][ T22] ? kvm_fastop_exception+0xf6a/0x1058 [ 242.458740][ T22] kernelmode_fixup_or_oops+0x219/0x280 [ 242.464301][ T22] __bad_area_nosemaphore+0x36d/0x400 [ 242.469680][ T22] ? spurious_kernel_fault+0x38d/0x5b0 [ 242.475167][ T22] do_kern_addr_fault+0x5b/0x70 [ 242.480023][ T22] exc_page_fault+0x155/0x180 [ 242.484725][ T22] asm_exc_page_fault+0x1e/0x30 [ 242.489625][ T22] RIP: 0010:kvm_fastop_exception+0xf6a/0x1058 [ 242.495700][ 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 [ 242.515860][ T22] RSP: 0018:ffffc90000dcfae8 EFLAGS: 00010282 [ 242.522020][ T22] RAX: 00003231706f6f6c RBX: ffff8880180c8ef0 RCX: ffff88823bd9a020 [ 242.530008][ T22] RDX: ffffed10030191e5 RSI: 0000000000000006 RDI: 0000000000000007 [ 242.537981][ T22] RBP: 0000000000000006 R08: 0000000000000000 R09: ffff8880180c8f20 [ 242.545951][ T22] R10: ffffed10030191e4 R11: 0000000000000000 R12: ffff88823bd9a020 [ 242.553951][ T22] R13: ffff88823bd9a020 R14: ffff8880180c8f20 R15: dffffc0000000000 [ 242.561941][ T22] ? __d_lookup+0x372/0x720 [ 242.566474][ T22] d_lookup+0xd8/0x170 [ 242.570554][ T22] lookup_dcache+0x1e/0x130 [ 242.575062][ T22] __lookup_hash+0x29/0x180 [ 242.579572][ T22] kern_path_locked+0x17e/0x320 [ 242.584433][ T22] ? filename_lookup+0x80/0x80 [ 242.589221][ T22] handle_remove+0xa2/0x5fe [ 242.593742][ T22] ? cacheinfo_cpu_online.cold+0x3e/0x3e [ 242.599394][ T22] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 242.605387][ T22] ? finish_task_switch.isra.0+0x232/0xa50 [ 242.611216][ T22] ? find_held_lock+0x2d/0x110 [ 242.615986][ T22] ? devtmpfsd+0xaa/0x2a3 [ 242.620319][ T22] ? lock_downgrade+0x6e0/0x6e0 [ 242.625169][ T22] ? do_raw_spin_lock+0x120/0x2b0 [ 242.630200][ T22] ? rwlock_bug.part.0+0x90/0x90 [ 242.635149][ T22] devtmpfsd+0x1b9/0x2a3 [ 242.639511][ T22] ? dmar_validate_one_drhd+0x24d/0x24d [ 242.645074][ T22] kthread+0x3e5/0x4d0 [ 242.649149][ T22] ? set_kthread_struct+0x130/0x130 [ 242.654362][ T22] ret_from_fork+0x1f/0x30 [ 242.659163][ T22] Kernel Offset: disabled [ 242.663901][ T22] Rebooting in 86400 seconds..