DUID 00:04:e6:d8:3e:4c:c1:15:84:42:dc:00:60:8c:e3:5f:26:b4 forked to background, child pid 5487 [ 46.826288][ T5488] 8021q: adding VLAN 0 to HW filter on device bond0 [ 46.838927][ T5488] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.213' (ED25519) to the list of known hosts. executing program syzkaller login: [ 74.331682][ T5819] loop0: detected capacity change from 0 to 4096 executing program [ 74.502463][ T5823] loop0: detected capacity change from 0 to 4096 [ 74.536119][ T5823] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 74.547064][ T5823] #PF: supervisor instruction fetch in kernel mode [ 74.554824][ T5823] #PF: error_code(0x0010) - not-present page [ 74.565016][ T5823] PGD 80000000758dc067 P4D 80000000758dc067 PUD 769c8067 PMD 0 [ 74.573148][ T5823] Oops: Oops: 0010 [#1] PREEMPT SMP KASAN PTI [ 74.582073][ T5823] CPU: 0 UID: 0 PID: 5823 Comm: syz-executor831 Not tainted 6.13.0-rc5-syzkaller #0 [ 74.595541][ T5823] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 74.607533][ T5823] RIP: 0010:0x0 [ 74.611466][ T5823] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 74.621592][ T5823] RSP: 0018:ffffc90004017af8 EFLAGS: 00010246 [ 74.631753][ T5823] RAX: 1ffffffff1878abd RBX: ffffffff8c3c55e8 RCX: 0000000000001000 [ 74.644206][ T5823] RDX: 0000000000000000 RSI: ffff88807345cde0 RDI: ffff88802e332000 [ 74.653503][ T5823] RBP: ffffc90004017c40 R08: ffffc90004017ba0 R09: ffffc90004017bc0 [ 74.669899][ T5823] R10: dffffc0000000000 R11: 0000000000000000 R12: 0000000000001000 [ 74.681624][ T5823] R13: 0000000000001006 R14: dffffc0000000000 R15: ffff8880300c3c00 [ 74.690830][ T5823] FS: 00007f60c61866c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 74.703072][ T5823] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.711780][ T5823] CR2: ffffffffffffffd6 CR3: 0000000073820000 CR4: 00000000003526f0 [ 74.721526][ T5823] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.731723][ T5823] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.743484][ T5823] Call Trace: [ 74.749160][ T5823] [ 74.752613][ T5823] ? __die_body+0x5f/0xb0 [ 74.759951][ T5823] ? page_fault_oops+0x8e4/0xcc0 [ 74.767746][ T5823] ? __pfx_page_fault_oops+0x10/0x10 [ 74.774080][ T5823] ? __print_lock_name+0x201/0x250 [ 74.786966][ T5823] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 74.793542][ T5823] ? rcu_is_watching+0x15/0xb0 [ 74.804343][ T5823] ? is_errata93+0xbe/0x260 [ 74.809268][ T5823] ? exc_page_fault+0x5ed/0x8b0 [ 74.814180][ T5823] ? asm_exc_page_fault+0x26/0x30 [ 74.826121][ T5823] generic_perform_write+0x346/0x990 [ 74.831739][ T5823] ? __pfx_generic_perform_write+0x10/0x10 [ 74.841485][ T5823] ? file_update_time+0x2ab/0x450 [ 74.847755][ T5823] ? __generic_file_write_iter+0x102/0x230 [ 74.857206][ T5823] ? ntfs_file_write_iter+0x68f/0x7a0 [ 74.866946][ T5823] ntfs_file_write_iter+0x69c/0x7a0 [ 74.873501][ T5823] vfs_write+0xaeb/0xd30 [ 74.884547][ T5823] ? __pfx_ntfs_file_write_iter+0x10/0x10 [ 74.890335][ T5823] ? __pfx_vfs_write+0x10/0x10 [ 74.897779][ T5823] ? __fget_files+0x2a/0x410 [ 74.907067][ T5823] ? __fget_files+0x2a/0x410 [ 74.912241][ T5823] ksys_write+0x18f/0x2b0 [ 74.918348][ T5823] ? __pfx_ksys_write+0x10/0x10 [ 74.927757][ T5823] ? exc_page_fault+0x590/0x8b0 [ 74.933750][ T5823] ? do_syscall_64+0xb6/0x230 [ 74.942205][ T5823] do_syscall_64+0xf3/0x230 [ 74.948125][ T5823] ? clear_bhb_loop+0x35/0x90 [ 74.953132][ T5823] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.963262][ T5823] RIP: 0033:0x7f60c61cfb19 [ 74.968414][ T5823] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 [ 74.994747][ T5823] RSP: 002b:00007f60c6186218 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 75.009676][ T5823] RAX: ffffffffffffffda RBX: 00007f60c62786c8 RCX: 00007f60c61cfb19 [ 75.019770][ T5823] RDX: 0000000000001006 RSI: 00000000200002c0 RDI: 0000000000000004 [ 75.029602][ T5823] RBP: 00007f60c62786c0 R08: 0000000000000000 R09: 0000000000000000 [ 75.039947][ T5823] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f60c62786cc [ 75.049469][ T5823] R13: 00007f60c62240c0 R14: 0030656c69662f2e R15: 86b5113b1fc102c0 [ 75.060710][ T5823] [ 75.065722][ T5823] Modules linked in: [ 75.070767][ T5823] CR2: 0000000000000000 [ 75.075705][ T5823] ---[ end trace 0000000000000000 ]--- [ 75.084247][ T5823] RIP: 0010:0x0 [ 75.090730][ T5823] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 75.100313][ T5823] RSP: 0018:ffffc90004017af8 EFLAGS: 00010246 [ 75.108754][ T5823] RAX: 1ffffffff1878abd RBX: ffffffff8c3c55e8 RCX: 0000000000001000 [ 75.120120][ T5823] RDX: 0000000000000000 RSI: ffff88807345cde0 RDI: ffff88802e332000 [ 75.131672][ T5823] RBP: ffffc90004017c40 R08: ffffc90004017ba0 R09: ffffc90004017bc0 [ 75.146867][ T5823] R10: dffffc0000000000 R11: 0000000000000000 R12: 0000000000001000 [ 75.155025][ T5823] R13: 0000000000001006 R14: dffffc0000000000 R15: ffff8880300c3c00 [ 75.167781][ T5823] FS: 00007f60c61866c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 75.183789][ T5823] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.190830][ T5823] CR2: ffffffffffffffd6 CR3: 0000000073820000 CR4: 00000000003526f0 [ 75.205543][ T5823] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.215427][ T5823] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.228942][ T5823] Kernel panic - not syncing: Fatal exception [ 75.241431][ T5823] Kernel Offset: disabled [ 75.247399][ T5823] Rebooting in 86400 seconds..