DUID 00:04:a1:84:1b:e0:48:24:35:f8:15:f9:55:b5:79:ea:e6:3e forked to background, child pid 4682 [ 29.842020][ T4683] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.854678][ T4683] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.14' (ED25519) to the list of known hosts. syzkaller login: [ 52.825977][ T5011] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 52.835853][ T5011] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 52.843683][ T5011] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 52.851915][ T5011] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 52.859140][ T5011] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 52.866723][ T5011] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 executing program [ 52.914587][ T5010] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5010 'syz-executor748' [ 52.925506][ T5010] loop0: detected capacity change from 0 to 64 [ 52.949954][ T5019] syz-executor748[5019]: segfault at 0 ip 0000000000000000 sp 0000000020000008 error 14 likely on CPU 0 (core 0, socket 0) [ 52.951001][ T5020] syz-executor748[5020]: segfault at 0 ip 0000000000000000 sp 0000000020000008 error 14 [ 52.964094][ T5016] syz-executor748[5016]: segfault at 0 ip 0000000000000000 sp 0000000020000008 error 14 [ 52.977533][ T5017] syz-executor748[5017]: segfault at 0 ip 0000000000000000 sp 0000000020000008 error 14 [ 52.980984][ T5019] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 52.987450][ T5018] syz-executor748[5018]: segfault at 0 ip 0000000000000000 sp 0000000020000008 error 14 [ 52.997369][ T5033] syz-executor748[5033]: segfault at 0 ip 0000000000000000 sp 0000000020000008 error 14 [ 53.004740][ T5021] syz-executor748[5021]: segfault at 0 ip 0000000000000000 sp 0000000020000008 error 14 [ 53.014242][ T5034] syz-executor748[5034]: segfault at 0 ip 0000000000000000 sp 0000000020000008 error 14 [ 53.024344][ T5022] syz-executor748[5022]: segfault at 0 ip 0000000000000000 sp 0000000020000008 error 14 [ 53.033825][ T5032] syz-executor748[5032]: segfault at 0 ip 0000000000000000 sp 0000000020000008 error 14 [ 53.049753][ T5016] likely on CPU 1 (core 0, socket 0) [ 53.053792][ T5017] likely on CPU 1 (core 0, socket 0) [ 53.063380][ T5018] likely on CPU 1 (core 0, socket 0) [ 53.070922][ T5020] likely on CPU 1 (core 0, socket 0) [ 53.082229][ T5021] likely on CPU 1 (core 0, socket 0) [ 53.089774][ T5021] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 53.097488][ T5022] likely on CPU 1 (core 0, socket 0) [ 53.115411][ T5023] ------------[ cut here ]------------ [ 53.121052][ T5023] WARNING: CPU: 1 PID: 5023 at fs/buffer.c:1193 mark_buffer_dirty+0x2dd/0x500 [ 53.129940][ T5023] Modules linked in: [ 53.129983][ T5017] [ 53.133868][ T5023] CPU: 1 PID: 5023 Comm: syz-executor748 Not tainted 6.5.0-rc7-syzkaller-00185-g28f20a19294d #0 [ 53.136738][ T5017] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 53.146608][ T5023] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 [ 53.146622][ T5023] RIP: 0010:mark_buffer_dirty+0x2dd/0x500 [ 53.154386][ T5033] likely on CPU 0 (core 0, socket 0) [ 53.164060][ T5023] Code: df e8 a7 12 e0 ff 48 8b 3b be 04 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 62 5d fc ff e8 cd 31 87 ff e9 71 ff ff ff e8 c3 31 87 ff <0f> 0b e9 6d fd ff ff e8 b7 31 87 ff 0f 0b e9 96 fd ff ff e8 ab 31 [ 53.164078][ T5023] RSP: 0018:ffffc90003a4ece8 EFLAGS: 00010293 [ 53.164097][ T5023] RAX: ffffffff820486bd RBX: ffff888016be9201 RCX: ffff88807c090000 [ 53.170005][ T5020] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 53.175177][ T5023] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 53.211021][ T5032] likely on CPU 0 (core 0, socket 0) [ 53.216223][ T5023] RBP: 0000000000000000 R08: ffffffff82048424 R09: 1ffff1100ec4c35c [ 53.225225][ T5034] likely on CPU 0 (core 0, socket 0) [ 53.229512][ T5023] R10: dffffc0000000000 R11: ffffed100ec4c35d R12: ffff888076261ae0 [ 53.251026][ T5033] [ 53.251027][ T5023] R13: ffff888076261570 R14: ffff888076261ae0 R15: dffffc0000000000 [ 53.253342][ T5033] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 53.261373][ T5023] FS: 00005555571453c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 53.277649][ T5023] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.280959][ T5034] [ 53.284271][ T5023] CR2: 0000000000000000 CR3: 00000000734ee000 CR4: 00000000003506e0 [ 53.286535][ T5034] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 53.294519][ T5023] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.294533][ T5023] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.294545][ T5023] Call Trace: [ 53.294552][ T5023] [ 53.294560][ T5023] ? __warn+0x162/0x4a0 [ 53.294584][ T5023] ? mark_buffer_dirty+0x2dd/0x500 [ 53.303202][ T5032] [ 53.309904][ T5023] ? report_bug+0x2b3/0x500 [ 53.317944][ T5016] [ 53.321183][ T5023] ? mark_buffer_dirty+0x2dd/0x500 [ 53.321210][ T5023] ? handle_bug+0x3d/0x70 [ 53.334895][ T5016] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 53.335714][ T5023] ? exc_invalid_op+0x1a/0x50 [ 53.341157][ T5018] [ 53.342549][ T5023] ? asm_exc_invalid_op+0x1a/0x20 [ 53.347581][ T5018] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 53.351925][ T5023] ? mark_buffer_dirty+0x44/0x500 [ 53.351946][ T5023] ? mark_buffer_dirty+0x2dd/0x500 [ 53.373655][ T5032] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 53.378685][ T5023] ? mark_buffer_dirty+0x2dd/0x500 [ 53.401522][ T5023] ? mark_buffer_dirty+0x2dd/0x500 [ 53.406647][ T5023] bfs_get_block+0x856/0xad0 [ 53.411383][ T5023] __block_write_begin_int+0x555/0x1a60 [ 53.416967][ T5023] ? bfs_bmap+0x30/0x30 [ 53.421160][ T5023] ? folio_zero_new_buffers+0x540/0x540 [ 53.426723][ T5023] ? pagecache_get_page+0xeb/0x220 [ 53.431921][ T5023] ? bfs_bmap+0x30/0x30 [ 53.433217][ T5022] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 53.436076][ T5023] block_write_begin+0x9c/0x1f0 [ 53.448679][ T5023] ? bfs_write_begin+0x1e/0xd0 [ 53.453515][ T5023] bfs_write_begin+0x35/0xd0 [ 53.458126][ T5023] generic_perform_write+0x31b/0x630 [ 53.463505][ T5023] ? generic_file_direct_write+0x3f0/0x3f0 [ 53.469331][ T5023] ? generic_write_checks_count+0x490/0x490 [ 53.475292][ T5023] ? lockdep_hardirqs_on_prepare+0x43c/0x7a0 [ 53.481327][ T5023] ? __generic_file_write_iter+0x101/0x230 [ 53.487183][ T5023] generic_file_write_iter+0xaf/0x310 [ 53.492624][ T5023] __kernel_write_iter+0x32a/0x7c0 [ 53.497753][ T5023] ? _raw_spin_unlock+0x40/0x40 [ 53.502678][ T5023] ? vfs_read+0xb00/0xb00 [ 53.507031][ T5023] ? iov_iter_kvec+0x4e/0x1e0 [ 53.511754][ T5023] __kernel_write+0x120/0x170 [ 53.516438][ T5023] ? irqentry_exit_to_user_mode+0x9/0x40 [ 53.522101][ T5023] ? exc_page_fault+0x4e7/0x7c0 [ 53.526959][ T5023] ? __kernel_write_iter+0x7c0/0x7c0 [ 53.532305][ T5023] __dump_emit+0x236/0x360 [ 53.536731][ T5023] ? __dump_skip+0x250/0x250 [ 53.541352][ T5023] ? dump_emit+0x99/0xd0 [ 53.545601][ T5023] elf_core_dump+0x336a/0x4490 [ 53.550361][ T5023] ? load_elf_binary+0x2760/0x2760 [ 53.555524][ T5023] ? up_write+0x1a9/0x580 [ 53.559878][ T5023] ? rcu_read_lock_any_held+0xb7/0x160 [ 53.565365][ T5023] ? 0xffffffffff600000 [ 53.569522][ T5023] ? getname_kernel+0x140/0x2e0 [ 53.574416][ T5023] do_coredump+0x1b73/0x2ab0 [ 53.579032][ T5023] ? nfs_ssc_unregister+0x30/0x30 [ 53.584130][ T5023] ? _raw_spin_unlock_irq+0x23/0x50 [ 53.589344][ T5023] ? lockdep_hardirqs_on+0x98/0x140 [ 53.594585][ T5023] get_signal+0x145e/0x17e0 [ 53.599112][ T5023] ? ptrace_notify+0x380/0x380 [ 53.603921][ T5023] ? force_sig_fault+0x12b/0x1d0 [ 53.608884][ T5023] arch_do_signal_or_restart+0x91/0x670 [ 53.614484][ T5023] ? get_sigframe_size+0x10/0x10 [ 53.619439][ T5023] ? exit_to_user_mode_loop+0x39/0x100 [ 53.624931][ T5023] exit_to_user_mode_loop+0x6a/0x100 [ 53.630218][ T5023] exit_to_user_mode_prepare+0xb1/0x140 [ 53.635801][ T5023] irqentry_exit_to_user_mode+0x9/0x40 [ 53.641289][ T5023] exc_page_fault+0x4e7/0x7c0 [ 53.645956][ T5023] asm_exc_page_fault+0x26/0x30 [ 53.650788][ T5023] RIP: 0033:0x0 [ 53.654281][ T5023] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 53.661677][ T5023] RSP: 002b:0000000020000008 EFLAGS: 00010217 [ 53.667729][ T5023] RAX: 0000000000000000 RBX: 000000000000001a RCX: 00007f9d1491ba39 [ 53.675723][ T5023] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000000 [ 53.683716][ T5023] RBP: 00007ffe5806fcd8 R08: 0000000000000000 R09: 0000000000000000 [ 53.691712][ T5023] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe5806fd10 [ 53.699680][ T5023] R13: 00007f9d1499d590 R14: 0000000000000000 R15: 00007ffe5806fcf0 [ 53.707694][ T5023] [ 53.710719][ T5023] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 53.717979][ T5023] CPU: 1 PID: 5023 Comm: syz-executor748 Not tainted 6.5.0-rc7-syzkaller-00185-g28f20a19294d #0 [ 53.728374][ T5023] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 [ 53.738410][ T5023] Call Trace: [ 53.741673][ T5023] [ 53.744587][ T5023] dump_stack_lvl+0x1e7/0x2d0 [ 53.749249][ T5023] ? nf_tcp_handle_invalid+0x650/0x650 [ 53.754689][ T5023] ? panic+0x770/0x770 [ 53.758745][ T5023] ? vscnprintf+0x5d/0x80 [ 53.763063][ T5023] panic+0x30f/0x770 [ 53.766966][ T5023] ? __warn+0x171/0x4a0 [ 53.771116][ T5023] ? __memcpy_flushcache+0x2b0/0x2b0 [ 53.776402][ T5023] __warn+0x314/0x4a0 [ 53.780370][ T5023] ? mark_buffer_dirty+0x2dd/0x500 [ 53.785472][ T5023] report_bug+0x2b3/0x500 [ 53.789791][ T5023] ? mark_buffer_dirty+0x2dd/0x500 [ 53.794891][ T5023] handle_bug+0x3d/0x70 [ 53.799034][ T5023] exc_invalid_op+0x1a/0x50 [ 53.803528][ T5023] asm_exc_invalid_op+0x1a/0x20 [ 53.808364][ T5023] RIP: 0010:mark_buffer_dirty+0x2dd/0x500 [ 53.814074][ T5023] Code: df e8 a7 12 e0 ff 48 8b 3b be 04 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 62 5d fc ff e8 cd 31 87 ff e9 71 ff ff ff e8 c3 31 87 ff <0f> 0b e9 6d fd ff ff e8 b7 31 87 ff 0f 0b e9 96 fd ff ff e8 ab 31 [ 53.833665][ T5023] RSP: 0018:ffffc90003a4ece8 EFLAGS: 00010293 [ 53.839723][ T5023] RAX: ffffffff820486bd RBX: ffff888016be9201 RCX: ffff88807c090000 [ 53.847683][ T5023] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 53.855643][ T5023] RBP: 0000000000000000 R08: ffffffff82048424 R09: 1ffff1100ec4c35c [ 53.863601][ T5023] R10: dffffc0000000000 R11: ffffed100ec4c35d R12: ffff888076261ae0 [ 53.871561][ T5023] R13: ffff888076261570 R14: ffff888076261ae0 R15: dffffc0000000000 [ 53.879523][ T5023] ? mark_buffer_dirty+0x44/0x500 [ 53.884537][ T5023] ? mark_buffer_dirty+0x2dd/0x500 [ 53.889642][ T5023] ? mark_buffer_dirty+0x2dd/0x500 [ 53.894741][ T5023] bfs_get_block+0x856/0xad0 [ 53.899332][ T5023] __block_write_begin_int+0x555/0x1a60 [ 53.904883][ T5023] ? bfs_bmap+0x30/0x30 [ 53.909028][ T5023] ? folio_zero_new_buffers+0x540/0x540 [ 53.914566][ T5023] ? pagecache_get_page+0xeb/0x220 [ 53.919666][ T5023] ? bfs_bmap+0x30/0x30 [ 53.923812][ T5023] block_write_begin+0x9c/0x1f0 [ 53.928648][ T5023] ? bfs_write_begin+0x1e/0xd0 [ 53.933404][ T5023] bfs_write_begin+0x35/0xd0 [ 53.937989][ T5023] generic_perform_write+0x31b/0x630 [ 53.943277][ T5023] ? generic_file_direct_write+0x3f0/0x3f0 [ 53.949073][ T5023] ? generic_write_checks_count+0x490/0x490 [ 53.954953][ T5023] ? lockdep_hardirqs_on_prepare+0x43c/0x7a0 [ 53.960932][ T5023] ? __generic_file_write_iter+0x101/0x230 [ 53.966738][ T5023] generic_file_write_iter+0xaf/0x310 [ 53.972105][ T5023] __kernel_write_iter+0x32a/0x7c0 [ 53.977208][ T5023] ? _raw_spin_unlock+0x40/0x40 [ 53.982054][ T5023] ? vfs_read+0xb00/0xb00 [ 53.986386][ T5023] ? iov_iter_kvec+0x4e/0x1e0 [ 53.991071][ T5023] __kernel_write+0x120/0x170 [ 53.995736][ T5023] ? irqentry_exit_to_user_mode+0x9/0x40 [ 54.001358][ T5023] ? exc_page_fault+0x4e7/0x7c0 [ 54.006198][ T5023] ? __kernel_write_iter+0x7c0/0x7c0 [ 54.011487][ T5023] __dump_emit+0x236/0x360 [ 54.015899][ T5023] ? __dump_skip+0x250/0x250 [ 54.020480][ T5023] ? dump_emit+0x99/0xd0 [ 54.024713][ T5023] elf_core_dump+0x336a/0x4490 [ 54.029483][ T5023] ? load_elf_binary+0x2760/0x2760 [ 54.034588][ T5023] ? up_write+0x1a9/0x580 [ 54.038934][ T5023] ? rcu_read_lock_any_held+0xb7/0x160 [ 54.044386][ T5023] ? 0xffffffffff600000 [ 54.048527][ T5023] ? getname_kernel+0x140/0x2e0 [ 54.053375][ T5023] do_coredump+0x1b73/0x2ab0 [ 54.057978][ T5023] ? nfs_ssc_unregister+0x30/0x30 [ 54.063048][ T5023] ? _raw_spin_unlock_irq+0x23/0x50 [ 54.068324][ T5023] ? lockdep_hardirqs_on+0x98/0x140 [ 54.073515][ T5023] get_signal+0x145e/0x17e0 [ 54.078022][ T5023] ? ptrace_notify+0x380/0x380 [ 54.082773][ T5023] ? force_sig_fault+0x12b/0x1d0 [ 54.087702][ T5023] arch_do_signal_or_restart+0x91/0x670 [ 54.093244][ T5023] ? get_sigframe_size+0x10/0x10 [ 54.098182][ T5023] ? exit_to_user_mode_loop+0x39/0x100 [ 54.103629][ T5023] exit_to_user_mode_loop+0x6a/0x100 [ 54.108902][ T5023] exit_to_user_mode_prepare+0xb1/0x140 [ 54.114446][ T5023] irqentry_exit_to_user_mode+0x9/0x40 [ 54.119896][ T5023] exc_page_fault+0x4e7/0x7c0 [ 54.124570][ T5023] asm_exc_page_fault+0x26/0x30 [ 54.129408][ T5023] RIP: 0033:0x0 [ 54.132855][ T5023] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 54.140202][ T5023] RSP: 002b:0000000020000008 EFLAGS: 00010217 [ 54.146258][ T5023] RAX: 0000000000000000 RBX: 000000000000001a RCX: 00007f9d1491ba39 [ 54.154220][ T5023] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000000 [ 54.162180][ T5023] RBP: 00007ffe5806fcd8 R08: 0000000000000000 R09: 0000000000000000 [ 54.170139][ T5023] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe5806fd10 [ 54.178101][ T5023] R13: 00007f9d1499d590 R14: 0000000000000000 R15: 00007ffe5806fcf0 [ 54.186072][ T5023] [ 54.189261][ T5023] Kernel Offset: disabled [ 54.193655][ T5023] Rebooting in 86400 seconds..