Warning: Permanently added '10.128.0.64' (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 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 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 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 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 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 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 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 executing program syzkaller login: [ 64.982153][ T22] ================================================================== [ 64.982164][ T22] BUG: KFENCE: use-after-free read in kvm_fastop_exception+0xfdb/0x1089 [ 64.982164][ T22] [ 64.982202][ T22] Use-after-free read at 0xffff88823bd9e020 (in kfence-#206): [ 64.982212][ T22] kvm_fastop_exception+0xfdb/0x1089 [ 64.982224][ T22] d_lookup+0x32/0x70 [ 64.982234][ T22] __lookup_hash+0x2e/0x240 [ 64.982248][ T22] kern_path_locked+0x2f2/0x490 [ 64.982260][ T22] devtmpfs_work_loop+0x264/0x1080 [ 64.982272][ T22] devtmpfsd+0x44/0x50 [ 64.982285][ T22] kthread+0x453/0x480 [ 64.982295][ T22] ret_from_fork+0x1f/0x30 [ 64.982308][ T22] [ 64.982310][ T22] kfence-#206: 0xffff88823bd9e000-0xffff88823bd9efff, size=4096, cache=names_cache [ 64.982310][ T22] [ 64.982323][ T22] allocated by task 22 on cpu 1 at 64.981944s: [ 64.982342][ T22] getname_kernel+0x55/0x2d0 [ 64.982354][ T22] kern_path_locked+0xbb/0x490 [ 64.982366][ T22] devtmpfs_work_loop+0x264/0x1080 [ 64.982376][ T22] devtmpfsd+0x44/0x50 [ 64.982387][ T22] kthread+0x453/0x480 [ 64.982396][ T22] ret_from_fork+0x1f/0x30 [ 64.982406][ T22] [ 64.982409][ T22] freed by task 22 on cpu 1 at 64.981996s: [ 64.982423][ T22] kern_path_locked+0x226/0x490 [ 64.982435][ T22] devtmpfs_work_loop+0x264/0x1080 [ 64.982445][ T22] devtmpfsd+0x44/0x50 [ 64.982456][ T22] kthread+0x453/0x480 [ 64.982464][ T22] ret_from_fork+0x1f/0x30 [ 64.982475][ T22] [ 64.982479][ T22] CPU: 1 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 64.982491][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.982499][ T22] RIP: 0010:kvm_fastop_exception+0xfdb/0x1089 [ 64.982513][ T22] Code: ed e9 03 ea be f7 49 8d 4d 00 48 83 e1 f8 48 8b 19 41 8d 4d 00 83 e1 07 c1 e1 03 48 d3 eb e9 e7 fd be f7 49 8d 0e 48 83 e1 f8 <4c> 8b 21 41 8d 0e 83 e1 07 c1 e1 03 49 d3 ec e9 ab 06 bf f7 49 8d [ 64.982523][ T22] RSP: 0018:ffffc90000dcfa18 EFLAGS: 00010282 [ 64.982536][ T22] RAX: 0000003232736376 RBX: 0000000000000028 RCX: ffff88823bd9e020 [ 64.982545][ T22] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88807e31a360 [ 64.982554][ T22] RBP: 0000000000000005 R08: dffffc0000000000 R09: ffffed100fc6346d [ 64.982562][ T22] R10: ffffed100fc6346d R11: 0000000000000000 R12: 00000000f47267d6 [ 64.982571][ T22] R13: 0000003232736376 R14: ffff88823bd9e020 R15: ffff88807e31a360 [ 64.982580][ T22] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 64.982591][ T22] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.982600][ T22] CR2: ffff88823bd9e020 CR3: 0000000070c71000 CR4: 00000000001506e0 [ 64.982613][ T22] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.982620][ T22] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.982628][ T22] Call Trace: [ 64.982636][ T22] d_lookup+0x32/0x70 [ 64.982648][ T22] __lookup_hash+0x2e/0x240 [ 64.982663][ T22] kern_path_locked+0x2f2/0x490 [ 64.982677][ T22] ? __filename_lookup+0x640/0x640 [ 64.982692][ T22] ? do_raw_spin_unlock+0x134/0x8a0 [ 64.982708][ T22] devtmpfs_work_loop+0x264/0x1080 [ 64.982722][ T22] ? public_dev_mount+0xa0/0xa0 [ 64.982734][ T22] ? rcu_read_lock_sched_held+0x89/0x130 [ 64.982747][ T22] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 64.982772][ T22] ? _raw_spin_unlock_irqrestore+0x8b/0x130 [ 64.982788][ T22] ? _raw_spin_unlock+0x40/0x40 [ 64.982800][ T22] ? swake_up_locked+0x76/0x130 [ 64.982815][ T22] ? complete+0x54/0xa0 [ 64.982826][ T22] devtmpfsd+0x44/0x50 [ 64.982841][ T22] kthread+0x453/0x480 [ 64.982853][ T22] ? dmar_validate_one_drhd+0x2f0/0x2f0 [ 64.982869][ T22] ? kthread_blkcg+0xd0/0xd0 [ 64.982885][ T22] ret_from_fork+0x1f/0x30 [ 64.982905][ T22] ================================================================== [ 64.982911][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 64.983102][ T22] CPU: 1 PID: 22 Comm: kdevtmpfs Not tainted 5.14.0-syzkaller #0 [ 64.983116][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.983123][ T22] Call Trace: [ 64.983129][ T22] dump_stack_lvl+0x1dc/0x2d8 [ 64.983147][ T22] ? show_regs_print_info+0x12/0x12 [ 64.983162][ T22] ? log_buf_vmcoreinfo_setup+0x498/0x498 [ 64.983181][ T22] ? irq_work_queue+0xbd/0x120 [ 64.983204][ T22] panic+0x2d6/0x810 [ 64.983221][ T22] ? kfence_report_error+0x8d1/0xb20 [ 64.983236][ T22] ? nmi_panic+0x90/0x90 [ 64.983250][ T22] ? log_buf_vmcoreinfo_setup+0x498/0x498 [ 64.983270][ T22] ? ret_from_fork+0x1f/0x30 [ 64.983289][ T22] kfence_report_error+0xb20/0xb20 [ 64.983312][ T22] ? kfence_print_stack+0x2c0/0x2c0 [ 64.983327][ T22] ? kvm_fastop_exception+0xfdb/0x1089 [ 64.983340][ T22] ? d_lookup+0x32/0x70 [ 64.983351][ T22] ? __lookup_hash+0x2e/0x240 [ 64.983364][ T22] ? kern_path_locked+0x2f2/0x490 [ 64.983378][ T22] ? devtmpfs_work_loop+0x264/0x1080 [ 64.983391][ T22] ? devtmpfsd+0x44/0x50 [ 64.983404][ T22] ? kthread+0x453/0x480 [ 64.983415][ T22] ? ret_from_fork+0x1f/0x30 [ 64.983467][ T22] ? _raw_spin_lock_irqsave+0xdd/0x120 [ 64.983483][ T22] ? _raw_spin_lock+0x40/0x40 [ 64.983501][ T22] ? rcu_lock_release+0x5/0x20 [ 64.983518][ T22] kfence_handle_page_fault+0x46e/0x500 [ 64.983537][ T22] page_fault_oops+0x1a8/0xac0 [ 64.983552][ T22] ? is_prefetch+0x1ba/0x6f0 [ 64.983571][ T22] ? kernelmode_fixup_or_oops+0x260/0x260 [ 64.983583][ T22] ? search_module_extables+0x88/0xc0 [ 64.983601][ T22] ? fixup_exception+0x9c/0xd0 [ 64.983619][ T22] ? kernelmode_fixup_or_oops+0x203/0x260 [ 64.983637][ T22] __bad_area_nosemaphore+0x121/0x590 [ 64.983656][ T22] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 64.983671][ T22] ? bad_area_nosemaphore+0x30/0x30 [ 64.983688][ T22] ? spurious_kernel_fault+0xb8/0x570 [ 64.983706][ T22] exc_page_fault+0x15b/0x1e0 [ 64.983725][ T22] asm_exc_page_fault+0x1e/0x30 [ 64.983739][ T22] RIP: 0010:kvm_fastop_exception+0xfdb/0x1089 [ 64.983755][ T22] Code: ed e9 03 ea be f7 49 8d 4d 00 48 83 e1 f8 48 8b 19 41 8d 4d 00 83 e1 07 c1 e1 03 48 d3 eb e9 e7 fd be f7 49 8d 0e 48 83 e1 f8 <4c> 8b 21 41 8d 0e 83 e1 07 c1 e1 03 49 d3 ec e9 ab 06 bf f7 49 8d [ 64.983766][ T22] RSP: 0018:ffffc90000dcfa18 EFLAGS: 00010282 [ 64.983779][ T22] RAX: 0000003232736376 RBX: 0000000000000028 RCX: ffff88823bd9e020 [ 64.983789][ T22] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88807e31a360 [ 64.983799][ T22] RBP: 0000000000000005 R08: dffffc0000000000 R09: ffffed100fc6346d [ 64.983808][ T22] R10: ffffed100fc6346d R11: 0000000000000000 R12: 00000000f47267d6 [ 64.983818][ T22] R13: 0000003232736376 R14: ffff88823bd9e020 R15: ffff88807e31a360 [ 64.983842][ T22] ? __d_lookup+0x378/0x720 [ 64.983864][ T22] d_lookup+0x32/0x70 [ 64.983879][ T22] __lookup_hash+0x2e/0x240 [ 64.983898][ T22] kern_path_locked+0x2f2/0x490 [ 64.983917][ T22] ? __filename_lookup+0x640/0x640 [ 64.983935][ T22] ? do_raw_spin_unlock+0x134/0x8a0 [ 64.983957][ T22] devtmpfs_work_loop+0x264/0x1080 [ 64.983977][ T22] ? public_dev_mount+0xa0/0xa0 [ 64.983992][ T22] ? rcu_read_lock_sched_held+0x89/0x130 [ 64.984006][ T22] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 64.984055][ T22] ? _raw_spin_unlock_irqrestore+0x8b/0x130 [ 64.984076][ T22] ? _raw_spin_unlock+0x40/0x40 [ 64.984090][ T22] ? swake_up_locked+0x76/0x130 [ 64.984116][ T22] ? complete+0x54/0xa0 [ 64.984132][ T22] devtmpfsd+0x44/0x50 [ 64.984146][ T22] kthread+0x453/0x480 [ 64.984159][ T22] ? dmar_validate_one_drhd+0x2f0/0x2f0 [ 64.984173][ T22] ? kthread_blkcg+0xd0/0xd0 [ 64.984188][ T22] ret_from_fork+0x1f/0x30 [ 64.984574][ T22] Kernel Offset: disabled [ 65.721848][ T22] Rebooting in 86400 seconds..