73] vfs_write+0x30b/0xd60 [ 184.078746][ T6373] ? file_end_write+0x250/0x250 [ 184.083793][ T6373] ? __fget_files+0x40f/0x480 [ 184.088570][ T6373] ? mutex_lock_nested+0x17/0x20 [ 184.093852][ T6373] ? __fdget_pos+0x2bf/0x370 [ 184.098857][ T6373] ? ksys_write+0x71/0x260 [ 184.103535][ T6373] ksys_write+0x152/0x260 [ 184.108611][ T6373] ? __ia32_sys_read+0x80/0x80 [ 184.113635][ T6373] ? lockdep_hardirqs_on+0x94/0x140 [ 184.118944][ T6373] do_syscall_64+0x4c/0xa0 [ 184.123652][ T6373] ? clear_bhb_loop+0x30/0x80 [ 184.128616][ T6373] ? clear_bhb_loop+0x30/0x80 [ 184.133314][ T6373] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 184.139792][ T6373] RIP: 0033:0x7fbdb3b2c74e [ 184.145093][ T6373] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 184.168716][ T6373] RSP: 002b:00007fbdb2dc6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 184.178513][ T6373] RAX: ffffffffffffffda RBX: 00007fbdb2dc76c0 RCX: 00007fbdb3b2c74e [ 184.187502][ T6373] RDX: 0000000000000001 RSI: 00007fbdb2dc70b0 RDI: 0000000000000005 [ 184.196794][ T6373] RBP: 00007fbdb2dc70a0 R08: 0000000000000000 R09: 0000000000000000 [ 184.205525][ T6373] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 184.214964][ T6373] R13: 000000000000006e R14: 00007fbdb3d10058 R15: 00007ffc8d3c7768 [ 184.224122][ T6373] [ 184.243303][ T6375] FAULT_INJECTION: forcing a failure. [ 184.243303][ T6375] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 184.280556][ T6377] FAULT_INJECTION: forcing a failure. [ 184.280556][ T6377] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 184.296489][ T6379] FAULT_INJECTION: forcing a failure. [ 184.296489][ T6379] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 184.316619][ T6379] CPU: 0 PID: 6379 Comm: syz.1.304 Not tainted syzkaller #0 [ 184.324318][ T6379] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 184.334603][ T6379] Call Trace: [ 184.337902][ T6379] [ 184.340833][ T6379] dump_stack_lvl+0x188/0x250 [ 184.345518][ T6379] ? show_regs_print_info+0x20/0x20 [ 184.350820][ T6379] ? load_image+0x400/0x400 [ 184.355341][ T6379] ? __lock_acquire+0x7d10/0x7d10 [ 184.360496][ T6379] should_fail+0x38c/0x4c0 [ 184.364917][ T6379] _copy_from_user+0x2e/0x170 [ 184.369677][ T6379] kstrtouint_from_user+0xd3/0x220 [ 184.374803][ T6379] ? kstrtol_from_user+0x2a0/0x2a0 [ 184.379924][ T6379] proc_fail_nth_write+0x8b/0x200 [ 184.384951][ T6379] ? proc_fail_nth_read+0x220/0x220 [ 184.390224][ T6379] ? common_file_perm+0x171/0x1c0 [ 184.395241][ T6379] ? proc_fail_nth_read+0x220/0x220 [ 184.400520][ T6379] vfs_write+0x30b/0xd60 [ 184.405025][ T6379] ? file_end_write+0x250/0x250 [ 184.409881][ T6379] ? __fget_files+0x40f/0x480 [ 184.414657][ T6379] ? mutex_lock_nested+0x17/0x20 [ 184.420038][ T6379] ? __fdget_pos+0x2bf/0x370 [ 184.424916][ T6379] ? ksys_write+0x71/0x260 [ 184.429326][ T6379] ksys_write+0x152/0x260 [ 184.433667][ T6379] ? __ia32_sys_read+0x80/0x80 [ 184.438423][ T6379] ? lockdep_hardirqs_on+0x94/0x140 [ 184.443642][ T6379] do_syscall_64+0x4c/0xa0 [ 184.448106][ T6379] ? clear_bhb_loop+0x30/0x80 [ 184.452794][ T6379] ? clear_bhb_loop+0x30/0x80 [ 184.457605][ T6379] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 184.463501][ T6379] RIP: 0033:0x7f3baf05d74e [ 184.467910][ T6379] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 184.487626][ T6379] RSP: 002b:00007f3bae318ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 184.496202][ T6379] RAX: ffffffffffffffda RBX: 00007f3bae3196c0 RCX: 00007f3baf05d74e [ 184.504454][ T6379] RDX: 0000000000000001 RSI: 00007f3bae3190b0 RDI: 0000000000000007 [ 184.512446][ T6379] RBP: 00007f3bae3190a0 R08: 0000000000000000 R09: 0000000000000000 [ 184.520487][ T6379] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 184.528571][ T6379] R13: 000000000000000b R14: 00007f3baf240f80 R15: 00007ffeabae9a08 [ 184.536663][ T6379] [ 184.540756][ T6375] CPU: 0 PID: 6375 Comm: syz.4.302 Not tainted syzkaller #0 [ 184.541916][ T6382] FAULT_INJECTION: forcing a failure. [ 184.541916][ T6382] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 184.548247][ T6375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 184.548260][ T6375] Call Trace: [ 184.548267][ T6375] [ 184.548274][ T6375] dump_stack_lvl+0x188/0x250 [ 184.548301][ T6375] ? show_regs_print_info+0x20/0x20 [ 184.591298][ T6375] ? load_image+0x400/0x400 [ 184.596468][ T6375] ? __lock_acquire+0x7d10/0x7d10 [ 184.601524][ T6375] should_fail+0x38c/0x4c0 [ 184.606324][ T6375] _copy_from_user+0x2e/0x170 [ 184.611208][ T6375] kstrtouint_from_user+0xd3/0x220 [ 184.617130][ T6375] ? kstrtol_from_user+0x2a0/0x2a0 [ 184.623233][ T6375] proc_fail_nth_write+0x8b/0x200 [ 184.628421][ T6375] ? proc_fail_nth_read+0x220/0x220 [ 184.633871][ T6375] ? common_file_perm+0x171/0x1c0 [ 184.639116][ T6375] ? proc_fail_nth_read+0x220/0x220 [ 184.644356][ T6375] vfs_write+0x30b/0xd60 [ 184.648638][ T6375] ? file_end_write+0x250/0x250 [ 184.654418][ T6375] ? __fget_files+0x40f/0x480 [ 184.659936][ T6375] ? mutex_lock_nested+0x17/0x20 [ 184.666025][ T6375] ? __fdget_pos+0x2bf/0x370 [ 184.671370][ T6375] ? ksys_write+0x71/0x260 [ 184.677354][ T6375] ksys_write+0x152/0x260 [ 184.683813][ T6375] ? __ia32_sys_read+0x80/0x80 [ 184.690882][ T6375] ? lockdep_hardirqs_on+0x94/0x140 [ 184.696451][ T6375] do_syscall_64+0x4c/0xa0 [ 184.701259][ T6375] ? clear_bhb_loop+0x30/0x80 [ 184.706910][ T6375] ? clear_bhb_loop+0x30/0x80 [ 184.713142][ T6375] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 184.721113][ T6375] RIP: 0033:0x7f16d038274e [ 184.726539][ T6375] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 184.747952][ T6375] RSP: 002b:00007f16cf63dff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 184.756471][ T6375] RAX: ffffffffffffffda RBX: 00007f16cf63e6c0 RCX: 00007f16d038274e [ 184.765015][ T6375] RDX: 0000000000000001 RSI: 00007f16cf63e0b0 RDI: 0000000000000007 [ 184.774266][ T6375] RBP: 00007f16cf63e0a0 R08: 0000000000000000 R09: 0000000000000000 [ 184.782437][ T6375] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 184.791124][ T6375] R13: 000000000000000b R14: 00007f16d0565f80 R15: 00007ffc849792c8 [ 184.799513][ T6375] [ 184.809873][ T6377] CPU: 1 PID: 6377 Comm: syz.0.303 Not tainted syzkaller #0 [ 184.817260][ T6377] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 184.827348][ T6377] Call Trace: [ 184.831110][ T6377] [ 184.834061][ T6377] dump_stack_lvl+0x188/0x250 [ 184.838780][ T6377] ? show_regs_print_info+0x20/0x20 [ 184.844182][ T6377] ? load_image+0x400/0x400 [ 184.848791][ T6377] ? __lock_acquire+0x7d10/0x7d10 [ 184.853831][ T6377] should_fail+0x38c/0x4c0 [ 184.858365][ T6377] _copy_from_user+0x2e/0x170 [ 184.863160][ T6377] kstrtouint_from_user+0xd3/0x220 [ 184.868800][ T6377] ? kstrtol_from_user+0x2a0/0x2a0 [ 184.874059][ T6377] proc_fail_nth_write+0x8b/0x200 [ 184.879108][ T6377] ? proc_fail_nth_read+0x220/0x220 [ 184.884881][ T6377] ? common_file_perm+0x171/0x1c0 [ 184.890032][ T6377] ? proc_fail_nth_read+0x220/0x220 [ 184.890896][ T6385] FAULT_INJECTION: forcing a failure. [ 184.890896][ T6385] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 184.895273][ T6377] vfs_write+0x30b/0xd60 [ 184.895303][ T6377] ? file_end_write+0x250/0x250 [ 184.895324][ T6377] ? __fget_files+0x40f/0x480 [ 184.895345][ T6377] ? mutex_lock_nested+0x17/0x20 [ 184.895365][ T6377] ? __fdget_pos+0x2bf/0x370 [ 184.895385][ T6377] ? ksys_write+0x71/0x260 [ 184.895400][ T6377] ksys_write+0x152/0x260 [ 184.895417][ T6377] ? __ia32_sys_read+0x80/0x80 [ 184.895435][ T6377] ? lockdep_hardirqs_on+0x94/0x140 [ 184.895456][ T6377] do_syscall_64+0x4c/0xa0 [ 184.895471][ T6377] ? clear_bhb_loop+0x30/0x80 [ 184.895486][ T6377] ? clear_bhb_loop+0x30/0x80 [ 184.895500][ T6377] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 184.895516][ T6377] RIP: 0033:0x7f864b3a574e [ 184.979243][ T6377] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 185.000388][ T6377] RSP: 002b:00007f864a660ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 185.009095][ T6377] RAX: ffffffffffffffda RBX: 00007f864a6616c0 RCX: 00007f864b3a574e [ 185.017390][ T6377] RDX: 0000000000000001 RSI: 00007f864a6610b0 RDI: 0000000000000007 [ 185.025471][ T6377] RBP: 00007f864a6610a0 R08: 0000000000000000 R09: 0000000000000000 [ 185.033916][ T6377] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 185.042169][ T6377] R13: 000000000000000b R14: 00007f864b588f80 R15: 00007ffeb91066c8 [ 185.050167][ T6377] [ 185.053275][ T6382] CPU: 0 PID: 6382 Comm: syz.3.305 Not tainted syzkaller #0 [ 185.060785][ T6382] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 185.070894][ T6382] Call Trace: [ 185.074188][ T6382] [ 185.077280][ T6382] dump_stack_lvl+0x188/0x250 [ 185.082003][ T6382] ? show_regs_print_info+0x20/0x20 [ 185.087251][ T6382] ? load_image+0x400/0x400 [ 185.091930][ T6382] ? __lock_acquire+0x7d10/0x7d10 [ 185.097125][ T6382] should_fail+0x38c/0x4c0 [ 185.101567][ T6382] _copy_from_user+0x2e/0x170 [ 185.106233][ T6382] kstrtouint_from_user+0xd3/0x220 [ 185.111631][ T6382] ? kstrtol_from_user+0x2a0/0x2a0 [ 185.116963][ T6382] proc_fail_nth_write+0x8b/0x200 [ 185.122088][ T6382] ? proc_fail_nth_read+0x220/0x220 [ 185.127276][ T6382] ? common_file_perm+0x171/0x1c0 [ 185.132470][ T6382] ? proc_fail_nth_read+0x220/0x220 [ 185.138042][ T6382] vfs_write+0x30b/0xd60 [ 185.142473][ T6382] ? file_end_write+0x250/0x250 [ 185.148175][ T6382] ? __fget_files+0x40f/0x480 [ 185.153093][ T6382] ? mutex_lock_nested+0x17/0x20 [ 185.158593][ T6382] ? __fdget_pos+0x2bf/0x370 [ 185.164523][ T6382] ? ksys_write+0x71/0x260 [ 185.169498][ T6382] ksys_write+0x152/0x260 [ 185.174707][ T6382] ? __ia32_sys_read+0x80/0x80 [ 185.179893][ T6382] ? lockdep_hardirqs_on+0x94/0x140 [ 185.185852][ T6382] do_syscall_64+0x4c/0xa0 [ 185.191178][ T6382] ? clear_bhb_loop+0x30/0x80 [ 185.196681][ T6382] ? clear_bhb_loop+0x30/0x80 [ 185.201391][ T6382] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 185.207834][ T6382] RIP: 0033:0x7fbad61c174e [ 185.212887][ T6382] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 185.233853][ T6382] RSP: 002b:00007fbad545bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 185.242954][ T6382] RAX: ffffffffffffffda RBX: 00007fbad545c6c0 RCX: 00007fbad61c174e [ 185.251223][ T6382] RDX: 0000000000000001 RSI: 00007fbad545c0b0 RDI: 0000000000000005 [ 185.260169][ T6382] RBP: 00007fbad545c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 185.268164][ T6382] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 185.276326][ T6382] R13: 000000000000006e R14: 00007fbad63a5058 R15: 00007ffe2023ce08 [ 185.284504][ T6382] [ 185.288625][ T6385] CPU: 1 PID: 6385 Comm: syz.4.306 Not tainted syzkaller #0 [ 185.296568][ T6385] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 185.307082][ T6385] Call Trace: [ 185.310451][ T6385] [ 185.313558][ T6385] dump_stack_lvl+0x188/0x250 [ 185.318266][ T6385] ? show_regs_print_info+0x20/0x20 [ 185.323577][ T6385] ? load_image+0x400/0x400 [ 185.328251][ T6385] ? __lock_acquire+0x7d10/0x7d10 [ 185.333406][ T6385] should_fail+0x38c/0x4c0 [ 185.338088][ T6385] _copy_from_user+0x2e/0x170 [ 185.343397][ T6385] kstrtouint_from_user+0xd3/0x220 [ 185.348831][ T6385] ? kstrtol_from_user+0x2a0/0x2a0 [ 185.354237][ T6385] proc_fail_nth_write+0x8b/0x200 [ 185.359279][ T6385] ? proc_fail_nth_read+0x220/0x220 [ 185.364588][ T6385] ? common_file_perm+0x171/0x1c0 [ 185.369646][ T6385] ? proc_fail_nth_read+0x220/0x220 [ 185.375364][ T6385] vfs_write+0x30b/0xd60 [ 185.379727][ T6385] ? file_end_write+0x250/0x250 [ 185.384711][ T6385] ? __fget_files+0x40f/0x480 [ 185.389417][ T6385] ? mutex_lock_nested+0x17/0x20 [ 185.395036][ T6385] ? __fdget_pos+0x2bf/0x370 [ 185.399740][ T6385] ? ksys_write+0x71/0x260 [ 185.404155][ T6385] ksys_write+0x152/0x260 [ 185.408664][ T6385] ? __ia32_sys_read+0x80/0x80 [ 185.413507][ T6385] ? lockdep_hardirqs_on+0x94/0x140 [ 185.418900][ T6385] do_syscall_64+0x4c/0xa0 [ 185.423497][ T6385] ? clear_bhb_loop+0x30/0x80 [ 185.428191][ T6385] ? clear_bhb_loop+0x30/0x80 [ 185.432879][ T6385] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 185.439164][ T6385] RIP: 0033:0x7f16d038274e [ 185.443954][ T6385] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 185.464105][ T6385] RSP: 002b:00007f16cf61cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 185.473100][ T6385] RAX: ffffffffffffffda RBX: 00007f16cf61d6c0 RCX: 00007f16d038274e [ 185.481307][ T6385] RDX: 0000000000000001 RSI: 00007f16cf61d0b0 RDI: 0000000000000005 [ 185.489568][ T6385] RBP: 00007f16cf61d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 185.497689][ T6385] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 185.506202][ T6385] R13: 000000000000006e R14: 00007f16d0566058 R15: 00007ffc849792c8 [ 185.514216][ T6385] [ 185.588631][ T6388] FAULT_INJECTION: forcing a failure. [ 185.588631][ T6388] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 185.611166][ T6392] FAULT_INJECTION: forcing a failure. [ 185.611166][ T6392] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 185.611166][ T6394] FAULT_INJECTION: forcing a failure. [ 185.611166][ T6394] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 185.611201][ T6394] CPU: 0 PID: 6394 Comm: syz.4.311 Not tainted syzkaller #0 [ 185.646502][ T6394] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 185.656846][ T6394] Call Trace: [ 185.660392][ T6394] [ 185.663846][ T6394] dump_stack_lvl+0x188/0x250 [ 185.668853][ T6394] ? show_regs_print_info+0x20/0x20 [ 185.674204][ T6394] ? load_image+0x400/0x400 [ 185.678922][ T6394] ? __lock_acquire+0x7d10/0x7d10 [ 185.684005][ T6394] should_fail+0x38c/0x4c0 [ 185.688589][ T6394] _copy_from_user+0x2e/0x170 [ 185.693487][ T6394] kstrtouint_from_user+0xd3/0x220 [ 185.699099][ T6394] ? kstrtol_from_user+0x2a0/0x2a0 [ 185.704371][ T6394] proc_fail_nth_write+0x8b/0x200 [ 185.709725][ T6394] ? proc_fail_nth_read+0x220/0x220 [ 185.715043][ T6394] ? common_file_perm+0x171/0x1c0 [ 185.720172][ T6394] ? proc_fail_nth_read+0x220/0x220 [ 185.725540][ T6394] vfs_write+0x30b/0xd60 [ 185.729993][ T6394] ? file_end_write+0x250/0x250 [ 185.734990][ T6394] ? __fget_files+0x40f/0x480 [ 185.739770][ T6394] ? mutex_lock_nested+0x17/0x20 [ 185.744891][ T6394] ? __fdget_pos+0x2bf/0x370 [ 185.749577][ T6394] ? ksys_write+0x71/0x260 [ 185.754310][ T6394] ksys_write+0x152/0x260 [ 185.758673][ T6394] ? __ia32_sys_read+0x80/0x80 [ 185.763446][ T6394] ? lockdep_hardirqs_on+0x94/0x140 [ 185.768748][ T6394] do_syscall_64+0x4c/0xa0 [ 185.773360][ T6394] ? clear_bhb_loop+0x30/0x80 [ 185.778995][ T6394] ? clear_bhb_loop+0x30/0x80 [ 185.784109][ T6394] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 185.790728][ T6394] RIP: 0033:0x7f16d038274e [ 185.795177][ T6394] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 185.815142][ T6394] RSP: 002b:00007f16cf63dff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 185.823950][ T6394] RAX: ffffffffffffffda RBX: 00007f16cf63e6c0 RCX: 00007f16d038274e [ 185.831942][ T6394] RDX: 0000000000000001 RSI: 00007f16cf63e0b0 RDI: 0000000000000007 [ 185.840311][ T6394] RBP: 00007f16cf63e0a0 R08: 0000000000000000 R09: 0000000000000000 [ 185.848319][ T6394] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 185.856575][ T6394] R13: 000000000000000b R14: 00007f16d0565f80 R15: 00007ffc849792c8 [ 185.864833][ T6394] [ 185.870167][ T6388] CPU: 0 PID: 6388 Comm: syz.1.309 Not tainted syzkaller #0 [ 185.878174][ T6388] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 185.888361][ T6388] Call Trace: [ 185.891827][ T6388] [ 185.894975][ T6388] dump_stack_lvl+0x188/0x250 [ 185.899778][ T6388] ? show_regs_print_info+0x20/0x20 [ 185.905013][ T6388] ? load_image+0x400/0x400 [ 185.909649][ T6388] ? __lock_acquire+0x7d10/0x7d10 [ 185.914893][ T6388] should_fail+0x38c/0x4c0 [ 185.919334][ T6388] _copy_from_user+0x2e/0x170 [ 185.924216][ T6388] kstrtouint_from_user+0xd3/0x220 [ 185.929333][ T6388] ? kstrtol_from_user+0x2a0/0x2a0 [ 185.934555][ T6388] proc_fail_nth_write+0x8b/0x200 [ 185.939820][ T6388] ? proc_fail_nth_read+0x220/0x220 [ 185.945305][ T6388] ? common_file_perm+0x171/0x1c0 [ 185.951033][ T6388] ? proc_fail_nth_read+0x220/0x220 [ 185.956609][ T6388] vfs_write+0x30b/0xd60 [ 185.961473][ T6388] ? file_end_write+0x250/0x250 [ 185.966584][ T6388] ? __fget_files+0x40f/0x480 [ 185.971558][ T6388] ? mutex_lock_nested+0x17/0x20 [ 185.977675][ T6388] ? __fdget_pos+0x2bf/0x370 [ 185.982848][ T6388] ? ksys_write+0x71/0x260 [ 185.987655][ T6388] ksys_write+0x152/0x260 [ 185.992470][ T6388] ? __ia32_sys_read+0x80/0x80 [ 185.998158][ T6388] ? lockdep_hardirqs_on+0x94/0x140 [ 186.003882][ T6388] do_syscall_64+0x4c/0xa0 [ 186.008664][ T6388] ? clear_bhb_loop+0x30/0x80 [ 186.013390][ T6388] ? clear_bhb_loop+0x30/0x80 [ 186.018074][ T6388] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 186.024194][ T6388] RIP: 0033:0x7f3baf05d74e [ 186.028866][ T6388] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 186.049915][ T6388] RSP: 002b:00007f3bae318ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 186.058973][ T6388] RAX: ffffffffffffffda RBX: 00007f3bae3196c0 RCX: 00007f3baf05d74e [ 186.067312][ T6388] RDX: 0000000000000001 RSI: 00007f3bae3190b0 RDI: 0000000000000007 [ 186.076508][ T6388] RBP: 00007f3bae3190a0 R08: 0000000000000000 R09: 0000000000000000 [ 186.085022][ T6388] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 186.093274][ T6388] R13: 000000000000000b R14: 00007f3baf240f80 R15: 00007ffeabae9a08 [ 186.101363][ T6388] [ 186.106878][ T6392] CPU: 0 PID: 6392 Comm: syz.3.310 Not tainted syzkaller #0 [ 186.114687][ T6392] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 186.126238][ T6392] Call Trace: [ 186.129710][ T6392] [ 186.132671][ T6392] dump_stack_lvl+0x188/0x250 [ 186.137478][ T6392] ? show_regs_print_info+0x20/0x20 [ 186.142950][ T6392] ? load_image+0x400/0x400 [ 186.148263][ T6392] ? __lock_acquire+0x7d10/0x7d10 [ 186.153618][ T6392] should_fail+0x38c/0x4c0 [ 186.158671][ T6392] _copy_from_user+0x2e/0x170 [ 186.159435][ T6400] FAULT_INJECTION: forcing a failure. [ 186.159435][ T6400] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 186.165440][ T6392] kstrtouint_from_user+0xd3/0x220 [ 186.165485][ T6392] ? kstrtol_from_user+0x2a0/0x2a0 [ 186.165511][ T6392] proc_fail_nth_write+0x8b/0x200 [ 186.165531][ T6392] ? proc_fail_nth_read+0x220/0x220 [ 186.165548][ T6392] ? common_file_perm+0x171/0x1c0 [ 186.165568][ T6392] ? proc_fail_nth_read+0x220/0x220 [ 186.165586][ T6392] vfs_write+0x30b/0xd60 [ 186.165608][ T6392] ? file_end_write+0x250/0x250 [ 186.165628][ T6392] ? __fget_files+0x40f/0x480 [ 186.165649][ T6392] ? mutex_lock_nested+0x17/0x20 [ 186.165666][ T6392] ? __fdget_pos+0x2bf/0x370 [ 186.165679][ T6392] ? ksys_write+0x71/0x260 [ 186.165696][ T6392] ksys_write+0x152/0x260 [ 186.165712][ T6392] ? __ia32_sys_read+0x80/0x80 [ 186.165728][ T6392] ? lockdep_hardirqs_on+0x94/0x140 [ 186.165750][ T6392] do_syscall_64+0x4c/0xa0 [ 186.165763][ T6392] ? clear_bhb_loop+0x30/0x80 [ 186.165778][ T6392] ? clear_bhb_loop+0x30/0x80 [ 186.165794][ T6392] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 186.165808][ T6392] RIP: 0033:0x7fbad61c174e [ 186.165826][ T6392] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 186.165840][ T6392] RSP: 002b:00007fbad547cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 186.165861][ T6392] RAX: ffffffffffffffda RBX: 00007fbad547d6c0 RCX: 00007fbad61c174e [ 186.165873][ T6392] RDX: 0000000000000001 RSI: 00007fbad547d0b0 RDI: 0000000000000007 [ 186.165884][ T6392] RBP: 00007fbad547d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 186.209049][ T6401] FAULT_INJECTION: forcing a failure. [ 186.209049][ T6401] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 186.211049][ T6392] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 186.211065][ T6392] R13: 000000000000000b R14: 00007fbad63a4f80 R15: 00007ffe2023ce08 [ 186.211090][ T6392] [ 186.275649][ T6400] CPU: 0 PID: 6400 Comm: syz.2.307 Not tainted syzkaller #0 [ 186.291793][ T6397] FAULT_INJECTION: forcing a failure. [ 186.291793][ T6397] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 186.300194][ T6400] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 186.300211][ T6400] Call Trace: [ 186.300221][ T6400] [ 186.300229][ T6400] dump_stack_lvl+0x188/0x250 [ 186.300259][ T6400] ? show_regs_print_info+0x20/0x20 [ 186.300276][ T6400] ? load_image+0x400/0x400 [ 186.300293][ T6400] ? __lock_acquire+0x7d10/0x7d10 [ 186.425776][ T6400] should_fail+0x38c/0x4c0 [ 186.430320][ T6400] _copy_from_user+0x2e/0x170 [ 186.435555][ T6400] kstrtouint_from_user+0xd3/0x220 [ 186.440712][ T6400] ? kstrtol_from_user+0x2a0/0x2a0 [ 186.445865][ T6400] proc_fail_nth_write+0x8b/0x200 [ 186.451097][ T6400] ? proc_fail_nth_read+0x220/0x220 [ 186.456299][ T6400] ? common_file_perm+0x171/0x1c0 [ 186.461660][ T6400] ? proc_fail_nth_read+0x220/0x220 [ 186.467073][ T6400] vfs_write+0x30b/0xd60 [ 186.471343][ T6400] ? file_end_write+0x250/0x250 [ 186.476233][ T6400] ? __fget_files+0x40f/0x480 [ 186.481036][ T6400] ? mutex_lock_nested+0x17/0x20 [ 186.485972][ T6400] ? __fdget_pos+0x2bf/0x370 [ 186.490555][ T6400] ? ksys_write+0x71/0x260 [ 186.495053][ T6400] ksys_write+0x152/0x260 [ 186.499483][ T6400] ? __ia32_sys_read+0x80/0x80 [ 186.504244][ T6400] ? lockdep_hardirqs_on+0x94/0x140 [ 186.509443][ T6400] do_syscall_64+0x4c/0xa0 [ 186.513940][ T6400] ? clear_bhb_loop+0x30/0x80 [ 186.518609][ T6400] ? clear_bhb_loop+0x30/0x80 [ 186.523280][ T6400] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 186.529273][ T6400] RIP: 0033:0x7fbdb3b2c74e [ 186.533804][ T6400] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 186.553419][ T6400] RSP: 002b:00007fbdb2dc6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 186.561855][ T6400] RAX: ffffffffffffffda RBX: 00007fbdb2dc76c0 RCX: 00007fbdb3b2c74e [ 186.569836][ T6400] RDX: 0000000000000001 RSI: 00007fbdb2dc70b0 RDI: 0000000000000005 [ 186.577837][ T6400] RBP: 00007fbdb2dc70a0 R08: 0000000000000000 R09: 0000000000000000 [ 186.586465][ T6400] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 186.594462][ T6400] R13: 000000000000006e R14: 00007fbdb3d10058 R15: 00007ffc8d3c7768 [ 186.602759][ T6400] [ 186.607711][ T6397] CPU: 0 PID: 6397 Comm: syz.0.308 Not tainted syzkaller #0 [ 186.615517][ T6397] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 186.625611][ T6397] Call Trace: [ 186.629161][ T6397] [ 186.632091][ T6397] dump_stack_lvl+0x188/0x250 [ 186.636766][ T6397] ? show_regs_print_info+0x20/0x20 [ 186.642070][ T6397] ? load_image+0x400/0x400 [ 186.646697][ T6397] ? __lock_acquire+0x7d10/0x7d10 [ 186.651820][ T6397] should_fail+0x38c/0x4c0 [ 186.656869][ T6397] _copy_from_user+0x2e/0x170 [ 186.661548][ T6397] kstrtouint_from_user+0xd3/0x220 [ 186.666659][ T6397] ? kstrtol_from_user+0x2a0/0x2a0 [ 186.671779][ T6397] proc_fail_nth_write+0x8b/0x200 [ 186.677151][ T6397] ? proc_fail_nth_read+0x220/0x220 [ 186.682426][ T6397] ? common_file_perm+0x171/0x1c0 [ 186.687726][ T6397] ? proc_fail_nth_read+0x220/0x220 [ 186.693184][ T6397] vfs_write+0x30b/0xd60 [ 186.697518][ T6397] ? file_end_write+0x250/0x250 [ 186.702454][ T6397] ? __fget_files+0x40f/0x480 [ 186.707310][ T6397] ? mutex_lock_nested+0x17/0x20 [ 186.712433][ T6397] ? __fdget_pos+0x2bf/0x370 [ 186.717054][ T6397] ? ksys_write+0x71/0x260 [ 186.721497][ T6397] ksys_write+0x152/0x260 [ 186.726006][ T6397] ? __ia32_sys_read+0x80/0x80 [ 186.730960][ T6397] ? lockdep_hardirqs_on+0x94/0x140 [ 186.736235][ T6397] do_syscall_64+0x4c/0xa0 [ 186.740688][ T6397] ? clear_bhb_loop+0x30/0x80 [ 186.745364][ T6397] ? clear_bhb_loop+0x30/0x80 [ 186.750037][ T6397] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 186.755940][ T6397] RIP: 0033:0x7f864b3a574e [ 186.760377][ T6397] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 186.780088][ T6397] RSP: 002b:00007f864a61eff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 186.788501][ T6397] RAX: ffffffffffffffda RBX: 00007f864a61f6c0 RCX: 00007f864b3a574e [ 186.796487][ T6397] RDX: 0000000000000001 RSI: 00007f864a61f0b0 RDI: 0000000000000005 [ 186.804559][ T6397] RBP: 00007f864a61f0a0 R08: 0000000000000000 R09: 0000000000000000 [ 186.812533][ T6397] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 186.820626][ T6397] R13: 000000000000006e R14: 00007f864b589130 R15: 00007ffeb91066c8 [ 186.828827][ T6397] [ 186.851396][ T6401] CPU: 0 PID: 6401 Comm: syz.4.312 Not tainted syzkaller #0 [ 186.858931][ T6401] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 186.869277][ T6401] Call Trace: [ 186.872661][ T6401] [ 186.876316][ T6401] dump_stack_lvl+0x188/0x250 [ 186.881041][ T6401] ? show_regs_print_info+0x20/0x20 [ 186.886377][ T6401] ? load_image+0x400/0x400 [ 186.890915][ T6401] ? __lock_acquire+0x7d10/0x7d10 [ 186.895957][ T6401] should_fail+0x38c/0x4c0 [ 186.900480][ T6401] _copy_from_user+0x2e/0x170 [ 186.905259][ T6401] kstrtouint_from_user+0xd3/0x220 [ 186.910639][ T6401] ? kstrtol_from_user+0x2a0/0x2a0 [ 186.915757][ T6401] proc_fail_nth_write+0x8b/0x200 [ 186.920786][ T6401] ? proc_fail_nth_read+0x220/0x220 [ 186.925982][ T6401] ? common_file_perm+0x171/0x1c0 [ 186.931005][ T6401] ? proc_fail_nth_read+0x220/0x220 [ 186.936313][ T6401] vfs_write+0x30b/0xd60 [ 186.940673][ T6401] ? file_end_write+0x250/0x250 [ 186.945549][ T6401] ? __fget_files+0x40f/0x480 [ 186.950238][ T6401] ? mutex_lock_nested+0x17/0x20 [ 186.955283][ T6401] ? __fdget_pos+0x2bf/0x370 [ 186.959891][ T6401] ? ksys_write+0x71/0x260 [ 186.964329][ T6401] ksys_write+0x152/0x260 [ 186.969538][ T6401] ? __ia32_sys_read+0x80/0x80 [ 186.974329][ T6401] ? lockdep_hardirqs_on+0x94/0x140 [ 186.979526][ T6401] do_syscall_64+0x4c/0xa0 [ 186.983930][ T6401] ? clear_bhb_loop+0x30/0x80 [ 186.988772][ T6401] ? clear_bhb_loop+0x30/0x80 [ 186.993438][ T6401] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 186.999328][ T6401] RIP: 0033:0x7f16d038274e [ 187.003868][ T6401] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 187.023585][ T6401] RSP: 002b:00007f16cf61cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 187.032036][ T6401] RAX: ffffffffffffffda RBX: 00007f16cf61d6c0 RCX: 00007f16d038274e [ 187.040276][ T6401] RDX: 0000000000000001 RSI: 00007f16cf61d0b0 RDI: 0000000000000005 [ 187.048674][ T6401] RBP: 00007f16cf61d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 187.056636][ T6401] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 187.064595][ T6401] R13: 000000000000006e R14: 00007f16d0566058 R15: 00007ffc849792c8 [ 187.072581][ T6401] [ 187.095442][ T6407] FAULT_INJECTION: forcing a failure. [ 187.095442][ T6407] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 187.110027][ T6406] FAULT_INJECTION: forcing a failure. [ 187.110027][ T6406] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 187.125432][ T6407] CPU: 0 PID: 6407 Comm: syz.1.314 Not tainted syzkaller #0 [ 187.132847][ T6407] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 187.142909][ T6407] Call Trace: [ 187.146188][ T6407] [ 187.149117][ T6407] dump_stack_lvl+0x188/0x250 [ 187.153792][ T6407] ? show_regs_print_info+0x20/0x20 [ 187.159009][ T6407] ? load_image+0x400/0x400 [ 187.163531][ T6407] ? __lock_acquire+0x7d10/0x7d10 [ 187.168675][ T6407] should_fail+0x38c/0x4c0 [ 187.173507][ T6407] _copy_from_user+0x2e/0x170 [ 187.178218][ T6407] kstrtouint_from_user+0xd3/0x220 [ 187.183370][ T6407] ? kstrtol_from_user+0x2a0/0x2a0 [ 187.188577][ T6407] proc_fail_nth_write+0x8b/0x200 [ 187.193774][ T6407] ? proc_fail_nth_read+0x220/0x220 [ 187.199154][ T6407] ? common_file_perm+0x171/0x1c0 [ 187.204272][ T6407] ? proc_fail_nth_read+0x220/0x220 [ 187.209561][ T6407] vfs_write+0x30b/0xd60 [ 187.214623][ T6407] ? file_end_write+0x250/0x250 [ 187.219472][ T6407] ? __fget_files+0x40f/0x480 [ 187.224562][ T6407] ? mutex_lock_nested+0x17/0x20 [ 187.229520][ T6407] ? __fdget_pos+0x2bf/0x370 [ 187.234294][ T6407] ? ksys_write+0x71/0x260 [ 187.238721][ T6407] ksys_write+0x152/0x260 [ 187.243068][ T6407] ? __ia32_sys_read+0x80/0x80 [ 187.247845][ T6407] ? lockdep_hardirqs_on+0x94/0x140 [ 187.253134][ T6407] do_syscall_64+0x4c/0xa0 [ 187.257540][ T6407] ? clear_bhb_loop+0x30/0x80 [ 187.262317][ T6407] ? clear_bhb_loop+0x30/0x80 [ 187.267032][ T6407] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 187.273196][ T6407] RIP: 0033:0x7f3baf05d74e [ 187.277631][ T6407] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 187.297350][ T6407] RSP: 002b:00007f3bae2f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 187.305899][ T6407] RAX: ffffffffffffffda RBX: 00007f3bae2f86c0 RCX: 00007f3baf05d74e [ 187.313881][ T6407] RDX: 0000000000000001 RSI: 00007f3bae2f80b0 RDI: 0000000000000005 [ 187.321841][ T6407] RBP: 00007f3bae2f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 187.329891][ T6407] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 187.338293][ T6407] R13: 000000000000006e R14: 00007f3baf241058 R15: 00007ffeabae9a08 [ 187.346281][ T6407] [ 187.353838][ T6406] CPU: 0 PID: 6406 Comm: syz.3.313 Not tainted syzkaller #0 [ 187.361173][ T6406] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 187.371328][ T6406] Call Trace: [ 187.374620][ T6406] [ 187.377559][ T6406] dump_stack_lvl+0x188/0x250 [ 187.382249][ T6406] ? show_regs_print_info+0x20/0x20 [ 187.387447][ T6406] ? load_image+0x400/0x400 [ 187.391944][ T6406] ? __lock_acquire+0x7d10/0x7d10 [ 187.397084][ T6406] should_fail+0x38c/0x4c0 [ 187.401554][ T6406] _copy_from_user+0x2e/0x170 [ 187.406250][ T6406] kstrtouint_from_user+0xd3/0x220 [ 187.411366][ T6406] ? kstrtol_from_user+0x2a0/0x2a0 [ 187.416729][ T6406] proc_fail_nth_write+0x8b/0x200 [ 187.421784][ T6406] ? proc_fail_nth_read+0x220/0x220 [ 187.426976][ T6406] ? common_file_perm+0x171/0x1c0 [ 187.431999][ T6406] ? proc_fail_nth_read+0x220/0x220 [ 187.437192][ T6406] vfs_write+0x30b/0xd60 [ 187.441426][ T6406] ? file_end_write+0x250/0x250 [ 187.446287][ T6406] ? __fget_files+0x40f/0x480 [ 187.450959][ T6406] ? mutex_lock_nested+0x17/0x20 [ 187.455905][ T6406] ? __fdget_pos+0x2bf/0x370 [ 187.460609][ T6406] ? ksys_write+0x71/0x260 [ 187.465033][ T6406] ksys_write+0x152/0x260 [ 187.469441][ T6406] ? __ia32_sys_read+0x80/0x80 [ 187.474195][ T6406] ? lockdep_hardirqs_on+0x94/0x140 [ 187.479493][ T6406] do_syscall_64+0x4c/0xa0 [ 187.483901][ T6406] ? clear_bhb_loop+0x30/0x80 [ 187.488572][ T6406] ? clear_bhb_loop+0x30/0x80 [ 187.493282][ T6406] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 187.499172][ T6406] RIP: 0033:0x7fbad61c174e [ 187.503582][ T6406] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 187.523185][ T6406] RSP: 002b:00007fbad545bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 187.531607][ T6406] RAX: ffffffffffffffda RBX: 00007fbad545c6c0 RCX: 00007fbad61c174e [ 187.539684][ T6406] RDX: 0000000000000001 RSI: 00007fbad545c0b0 RDI: 0000000000000005 [ 187.547817][ T6406] RBP: 00007fbad545c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 187.555810][ T6406] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 187.564182][ T6406] R13: 000000000000006e R14: 00007fbad63a5058 R15: 00007ffe2023ce08 [ 187.572348][ T6406] [ 187.581952][ T6410] FAULT_INJECTION: forcing a failure. [ 187.581952][ T6410] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 187.595382][ T6410] CPU: 0 PID: 6410 Comm: syz.2.315 Not tainted syzkaller #0 [ 187.602986][ T6410] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 187.613074][ T6410] Call Trace: [ 187.616441][ T6410] [ 187.619367][ T6410] dump_stack_lvl+0x188/0x250 [ 187.624040][ T6410] ? show_regs_print_info+0x20/0x20 [ 187.629232][ T6410] ? load_image+0x400/0x400 [ 187.633818][ T6410] ? __lock_acquire+0x7d10/0x7d10 [ 187.638871][ T6410] should_fail+0x38c/0x4c0 [ 187.643310][ T6410] _copy_from_user+0x2e/0x170 [ 187.647996][ T6410] kstrtouint_from_user+0xd3/0x220 [ 187.653146][ T6410] ? kstrtol_from_user+0x2a0/0x2a0 [ 187.658317][ T6410] proc_fail_nth_write+0x8b/0x200 [ 187.663377][ T6410] ? proc_fail_nth_read+0x220/0x220 [ 187.668693][ T6410] ? common_file_perm+0x171/0x1c0 [ 187.673763][ T6410] ? proc_fail_nth_read+0x220/0x220 [ 187.679556][ T6410] vfs_write+0x30b/0xd60 [ 187.683966][ T6410] ? file_end_write+0x250/0x250 [ 187.688839][ T6410] ? __fget_files+0x40f/0x480 [ 187.693533][ T6410] ? mutex_lock_nested+0x17/0x20 [ 187.698465][ T6410] ? __fdget_pos+0x2bf/0x370 [ 187.703048][ T6410] ? ksys_write+0x71/0x260 [ 187.707542][ T6410] ksys_write+0x152/0x260 [ 187.711860][ T6410] ? __ia32_sys_read+0x80/0x80 [ 187.716700][ T6410] ? lockdep_hardirqs_on+0x94/0x140 [ 187.721893][ T6410] do_syscall_64+0x4c/0xa0 [ 187.726304][ T6410] ? clear_bhb_loop+0x30/0x80 [ 187.730968][ T6410] ? clear_bhb_loop+0x30/0x80 [ 187.735642][ T6410] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 187.741539][ T6410] RIP: 0033:0x7fbdb3b2c74e [ 187.746038][ T6410] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 187.765723][ T6410] RSP: 002b:00007fbdb2dc6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 187.774189][ T6410] RAX: ffffffffffffffda RBX: 00007fbdb2dc76c0 RCX: 00007fbdb3b2c74e [ 187.782156][ T6410] RDX: 0000000000000001 RSI: 00007fbdb2dc70b0 RDI: 0000000000000005 [ 187.790227][ T6410] RBP: 00007fbdb2dc70a0 R08: 0000000000000000 R09: 0000000000000000 [ 187.798288][ T6410] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 187.806246][ T6410] R13: 000000000000006e R14: 00007fbdb3d10058 R15: 00007ffc8d3c7768 [ 187.814223][ T6410] [ 187.864212][ T6412] FAULT_INJECTION: forcing a failure. [ 187.864212][ T6412] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 187.886636][ T6416] FAULT_INJECTION: forcing a failure. [ 187.886636][ T6416] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 187.900263][ T6412] CPU: 0 PID: 6412 Comm: syz.4.317 Not tainted syzkaller #0 [ 187.907588][ T6412] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 187.917666][ T6412] Call Trace: [ 187.920943][ T6412] [ 187.923906][ T6412] dump_stack_lvl+0x188/0x250 [ 187.928582][ T6412] ? show_regs_print_info+0x20/0x20 [ 187.933770][ T6412] ? load_image+0x400/0x400 [ 187.938264][ T6412] ? __lock_acquire+0x7d10/0x7d10 [ 187.943381][ T6412] should_fail+0x38c/0x4c0 [ 187.947877][ T6412] _copy_from_user+0x2e/0x170 [ 187.952844][ T6412] kstrtouint_from_user+0xd3/0x220 [ 187.957987][ T6412] ? kstrtol_from_user+0x2a0/0x2a0 [ 187.963118][ T6412] proc_fail_nth_write+0x8b/0x200 [ 187.968139][ T6412] ? proc_fail_nth_read+0x220/0x220 [ 187.973641][ T6412] ? common_file_perm+0x171/0x1c0 [ 187.978830][ T6412] ? proc_fail_nth_read+0x220/0x220 [ 187.984080][ T6412] vfs_write+0x30b/0xd60 [ 187.988344][ T6412] ? file_end_write+0x250/0x250 [ 187.993187][ T6412] ? __fget_files+0x40f/0x480 [ 187.997857][ T6412] ? mutex_lock_nested+0x17/0x20 [ 188.002783][ T6412] ? __fdget_pos+0x2bf/0x370 [ 188.007476][ T6412] ? ksys_write+0x71/0x260 [ 188.011915][ T6412] ksys_write+0x152/0x260 [ 188.016249][ T6412] ? __ia32_sys_read+0x80/0x80 [ 188.021016][ T6412] ? lockdep_hardirqs_on+0x94/0x140 [ 188.026493][ T6412] do_syscall_64+0x4c/0xa0 [ 188.030927][ T6412] ? clear_bhb_loop+0x30/0x80 [ 188.035682][ T6412] ? clear_bhb_loop+0x30/0x80 [ 188.040359][ T6412] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 188.046240][ T6412] RIP: 0033:0x7f16d038274e [ 188.050646][ T6412] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 188.070589][ T6412] RSP: 002b:00007f16cf63dff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 188.079110][ T6412] RAX: ffffffffffffffda RBX: 00007f16cf63e6c0 RCX: 00007f16d038274e [ 188.087186][ T6412] RDX: 0000000000000001 RSI: 00007f16cf63e0b0 RDI: 0000000000000007 [ 188.095339][ T6412] RBP: 00007f16cf63e0a0 R08: 0000000000000000 R09: 0000000000000000 [ 188.103572][ T6412] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 188.111632][ T6412] R13: 000000000000000b R14: 00007f16d0565f80 R15: 00007ffc849792c8 [ 188.120215][ T6412] [ 188.133563][ T6418] FAULT_INJECTION: forcing a failure. [ 188.133563][ T6418] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 188.148191][ T6416] CPU: 0 PID: 6416 Comm: syz.3.319 Not tainted syzkaller #0 [ 188.155639][ T6416] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 188.165836][ T6416] Call Trace: [ 188.169131][ T6416] [ 188.172094][ T6416] dump_stack_lvl+0x188/0x250 [ 188.176809][ T6416] ? show_regs_print_info+0x20/0x20 [ 188.182033][ T6416] ? load_image+0x400/0x400 [ 188.186568][ T6416] ? __lock_acquire+0x7d10/0x7d10 [ 188.191618][ T6416] should_fail+0x38c/0x4c0 [ 188.196108][ T6416] _copy_from_user+0x2e/0x170 [ 188.200916][ T6416] kstrtouint_from_user+0xd3/0x220 [ 188.206055][ T6416] ? kstrtol_from_user+0x2a0/0x2a0 [ 188.211195][ T6416] proc_fail_nth_write+0x8b/0x200 [ 188.216240][ T6416] ? proc_fail_nth_read+0x220/0x220 [ 188.221446][ T6416] ? common_file_perm+0x171/0x1c0 [ 188.226569][ T6416] ? proc_fail_nth_read+0x220/0x220 [ 188.231879][ T6416] vfs_write+0x30b/0xd60 [ 188.236135][ T6416] ? file_end_write+0x250/0x250 [ 188.240998][ T6416] ? __fget_files+0x40f/0x480 [ 188.245703][ T6416] ? mutex_lock_nested+0x17/0x20 [ 188.250778][ T6416] ? __fdget_pos+0x2bf/0x370 [ 188.255377][ T6416] ? ksys_write+0x71/0x260 [ 188.259830][ T6416] ksys_write+0x152/0x260 [ 188.264178][ T6416] ? __ia32_sys_read+0x80/0x80 [ 188.268938][ T6416] ? lockdep_hardirqs_on+0x94/0x140 [ 188.274138][ T6416] do_syscall_64+0x4c/0xa0 [ 188.278556][ T6416] ? clear_bhb_loop+0x30/0x80 [ 188.283233][ T6416] ? clear_bhb_loop+0x30/0x80 [ 188.287910][ T6416] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 188.293815][ T6416] RIP: 0033:0x7fbad61c174e [ 188.298242][ T6416] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 188.317944][ T6416] RSP: 002b:00007fbad547cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 188.326368][ T6416] RAX: ffffffffffffffda RBX: 00007fbad547d6c0 RCX: 00007fbad61c174e [ 188.334331][ T6416] RDX: 0000000000000001 RSI: 00007fbad547d0b0 RDI: 0000000000000007 [ 188.342561][ T6416] RBP: 00007fbad547d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 188.350536][ T6416] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 188.358610][ T6416] R13: 000000000000000b R14: 00007fbad63a4f80 R15: 00007ffe2023ce08 [ 188.367065][ T6416] [ 188.373201][ T6414] FAULT_INJECTION: forcing a failure. [ 188.373201][ T6414] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 188.384917][ T6418] CPU: 1 PID: 6418 Comm: syz.1.316 Not tainted syzkaller #0 [ 188.393652][ T6418] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 188.403720][ T6418] Call Trace: [ 188.407038][ T6418] [ 188.410155][ T6418] dump_stack_lvl+0x188/0x250 [ 188.414859][ T6418] ? show_regs_print_info+0x20/0x20 [ 188.420175][ T6418] ? load_image+0x400/0x400 [ 188.424696][ T6418] ? __lock_acquire+0x7d10/0x7d10 [ 188.429836][ T6418] should_fail+0x38c/0x4c0 [ 188.434294][ T6418] _copy_from_user+0x2e/0x170 [ 188.438987][ T6418] kstrtouint_from_user+0xd3/0x220 [ 188.444098][ T6418] ? kstrtol_from_user+0x2a0/0x2a0 [ 188.449223][ T6418] proc_fail_nth_write+0x8b/0x200 [ 188.454249][ T6418] ? proc_fail_nth_read+0x220/0x220 [ 188.459455][ T6418] ? common_file_perm+0x171/0x1c0 [ 188.464491][ T6418] ? proc_fail_nth_read+0x220/0x220 [ 188.469878][ T6418] vfs_write+0x30b/0xd60 [ 188.474132][ T6418] ? file_end_write+0x250/0x250 [ 188.479113][ T6418] ? __fget_files+0x40f/0x480 [ 188.483817][ T6418] ? mutex_lock_nested+0x17/0x20 [ 188.488854][ T6418] ? __fdget_pos+0x2bf/0x370 [ 188.493449][ T6418] ? ksys_write+0x71/0x260 [ 188.497879][ T6418] ksys_write+0x152/0x260 [ 188.502225][ T6418] ? __ia32_sys_read+0x80/0x80 [ 188.507023][ T6418] ? lockdep_hardirqs_on+0x94/0x140 [ 188.512222][ T6418] do_syscall_64+0x4c/0xa0 [ 188.516635][ T6418] ? clear_bhb_loop+0x30/0x80 [ 188.521322][ T6418] ? clear_bhb_loop+0x30/0x80 [ 188.526049][ T6418] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 188.531942][ T6418] RIP: 0033:0x7f3baf05d74e [ 188.536368][ T6418] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 188.556093][ T6418] RSP: 002b:00007f3bae318ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 188.564525][ T6418] RAX: ffffffffffffffda RBX: 00007f3bae3196c0 RCX: 00007f3baf05d74e [ 188.572740][ T6418] RDX: 0000000000000001 RSI: 00007f3bae3190b0 RDI: 0000000000000007 [ 188.580875][ T6418] RBP: 00007f3bae3190a0 R08: 0000000000000000 R09: 0000000000000000 [ 188.589030][ T6418] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 188.597024][ T6418] R13: 000000000000000b R14: 00007f3baf240f80 R15: 00007ffeabae9a08 [ 188.605027][ T6418] [ 188.608176][ T6414] CPU: 0 PID: 6414 Comm: syz.0.318 Not tainted syzkaller #0 [ 188.615475][ T6414] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 188.625529][ T6414] Call Trace: [ 188.628802][ T6414] [ 188.631812][ T6414] dump_stack_lvl+0x188/0x250 [ 188.636574][ T6414] ? show_regs_print_info+0x20/0x20 [ 188.641760][ T6414] ? load_image+0x400/0x400 [ 188.646248][ T6414] ? __lock_acquire+0x7d10/0x7d10 [ 188.651268][ T6414] should_fail+0x38c/0x4c0 [ 188.655682][ T6414] _copy_from_user+0x2e/0x170 [ 188.660369][ T6414] kstrtouint_from_user+0xd3/0x220 [ 188.665572][ T6414] ? kstrtol_from_user+0x2a0/0x2a0 [ 188.670680][ T6414] proc_fail_nth_write+0x8b/0x200 [ 188.675695][ T6414] ? proc_fail_nth_read+0x220/0x220 [ 188.681138][ T6414] ? common_file_perm+0x171/0x1c0 [ 188.686188][ T6414] ? proc_fail_nth_read+0x220/0x220 [ 188.691416][ T6414] vfs_write+0x30b/0xd60 [ 188.695859][ T6414] ? file_end_write+0x250/0x250 [ 188.700843][ T6414] ? __fget_files+0x40f/0x480 [ 188.705694][ T6414] ? mutex_lock_nested+0x17/0x20 [ 188.710732][ T6414] ? __fdget_pos+0x2bf/0x370 [ 188.715314][ T6414] ? ksys_write+0x71/0x260 [ 188.719727][ T6414] ksys_write+0x152/0x260 [ 188.724044][ T6414] ? __ia32_sys_read+0x80/0x80 [ 188.728803][ T6414] ? lockdep_hardirqs_on+0x94/0x140 [ 188.734124][ T6414] do_syscall_64+0x4c/0xa0 [ 188.738555][ T6414] ? clear_bhb_loop+0x30/0x80 [ 188.743224][ T6414] ? clear_bhb_loop+0x30/0x80 [ 188.747980][ T6414] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 188.753862][ T6414] RIP: 0033:0x7f864b3a574e [ 188.758268][ T6414] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 188.778246][ T6414] RSP: 002b:00007f864a660ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 188.786762][ T6414] RAX: ffffffffffffffda RBX: 00007f864a6616c0 RCX: 00007f864b3a574e [ 188.794731][ T6414] RDX: 0000000000000001 RSI: 00007f864a6610b0 RDI: 0000000000000006 [ 188.802691][ T6414] RBP: 00007f864a6610a0 R08: 0000000000000000 R09: 0000000000000000 [ 188.810754][ T6414] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 188.818727][ T6414] R13: 000000000000000b R14: 00007f864b588f80 R15: 00007ffeb91066c8 [ 188.826701][ T6414] [ 188.884650][ T6421] FAULT_INJECTION: forcing a failure. [ 188.884650][ T6421] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 188.884650][ T6424] FAULT_INJECTION: forcing a failure. [ 188.884650][ T6424] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 188.884684][ T6421] CPU: 1 PID: 6421 Comm: syz.4.320 Not tainted syzkaller #0 [ 188.918127][ T6421] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 188.928193][ T6421] Call Trace: [ 188.931483][ T6421] [ 188.934414][ T6421] dump_stack_lvl+0x188/0x250 [ 188.939095][ T6421] ? show_regs_print_info+0x20/0x20 [ 188.944311][ T6421] ? load_image+0x400/0x400 [ 188.949025][ T6421] ? __lock_acquire+0x7d10/0x7d10 [ 188.954159][ T6421] should_fail+0x38c/0x4c0 [ 188.959201][ T6421] _copy_from_user+0x2e/0x170 [ 188.963909][ T6421] kstrtouint_from_user+0xd3/0x220 [ 188.969075][ T6421] ? kstrtol_from_user+0x2a0/0x2a0 [ 188.974215][ T6421] proc_fail_nth_write+0x8b/0x200 [ 188.979349][ T6421] ? proc_fail_nth_read+0x220/0x220 [ 188.984569][ T6421] ? common_file_perm+0x171/0x1c0 [ 188.989713][ T6421] ? proc_fail_nth_read+0x220/0x220 [ 188.994900][ T6421] vfs_write+0x30b/0xd60 [ 188.999171][ T6421] ? file_end_write+0x250/0x250 [ 189.004048][ T6421] ? __fget_files+0x40f/0x480 [ 189.008754][ T6421] ? mutex_lock_nested+0x17/0x20 [ 189.013702][ T6421] ? __fdget_pos+0x2bf/0x370 [ 189.018311][ T6421] ? ksys_write+0x71/0x260 [ 189.022742][ T6421] ksys_write+0x152/0x260 [ 189.027066][ T6421] ? __ia32_sys_read+0x80/0x80 [ 189.031829][ T6421] ? lockdep_hardirqs_on+0x94/0x140 [ 189.037027][ T6421] do_syscall_64+0x4c/0xa0 [ 189.041444][ T6421] ? clear_bhb_loop+0x30/0x80 [ 189.046212][ T6421] ? clear_bhb_loop+0x30/0x80 [ 189.050884][ T6421] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 189.056765][ T6421] RIP: 0033:0x7f16d038274e [ 189.061170][ T6421] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 189.081556][ T6421] RSP: 002b:00007f16cf63dff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 189.090063][ T6421] RAX: ffffffffffffffda RBX: 00007f16cf63e6c0 RCX: 00007f16d038274e [ 189.098035][ T6421] RDX: 0000000000000001 RSI: 00007f16cf63e0b0 RDI: 0000000000000007 [ 189.106241][ T6421] RBP: 00007f16cf63e0a0 R08: 0000000000000000 R09: 0000000000000000 [ 189.114206][ T6421] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 189.122165][ T6421] R13: 000000000000000b R14: 00007f16d0565f80 R15: 00007ffc849792c8 [ 189.130400][ T6421] [ 189.135077][ T6424] CPU: 1 PID: 6424 Comm: syz.3.323 Not tainted syzkaller #0 [ 189.137952][ T6428] FAULT_INJECTION: forcing a failure. [ 189.137952][ T6428] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 189.142424][ T6424] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 189.142439][ T6424] Call Trace: [ 189.142447][ T6424] [ 189.142454][ T6424] dump_stack_lvl+0x188/0x250 [ 189.142479][ T6424] ? show_regs_print_info+0x20/0x20 [ 189.142496][ T6424] ? load_image+0x400/0x400 [ 189.142513][ T6424] ? __lock_acquire+0x7d10/0x7d10 [ 189.192105][ T6424] should_fail+0x38c/0x4c0 [ 189.196634][ T6424] _copy_from_user+0x2e/0x170 [ 189.201390][ T6424] kstrtouint_from_user+0xd3/0x220 [ 189.206634][ T6424] ? kstrtol_from_user+0x2a0/0x2a0 [ 189.211802][ T6424] proc_fail_nth_write+0x8b/0x200 [ 189.216860][ T6424] ? proc_fail_nth_read+0x220/0x220 [ 189.222088][ T6424] ? common_file_perm+0x171/0x1c0 [ 189.227146][ T6424] ? proc_fail_nth_read+0x220/0x220 [ 189.232380][ T6424] vfs_write+0x30b/0xd60 [ 189.236928][ T6424] ? file_end_write+0x250/0x250 [ 189.241806][ T6424] ? __fget_files+0x40f/0x480 [ 189.246522][ T6424] ? mutex_lock_nested+0x17/0x20 [ 189.251439][ T6431] FAULT_INJECTION: forcing a failure. [ 189.251439][ T6431] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 189.251569][ T6424] ? __fdget_pos+0x2bf/0x370 [ 189.266419][ T6432] FAULT_INJECTION: forcing a failure. [ 189.266419][ T6432] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 189.269164][ T6424] ? ksys_write+0x71/0x260 [ 189.286669][ T6424] ksys_write+0x152/0x260 [ 189.291111][ T6424] ? __ia32_sys_read+0x80/0x80 [ 189.295911][ T6424] ? lockdep_hardirqs_on+0x94/0x140 [ 189.301140][ T6424] do_syscall_64+0x4c/0xa0 [ 189.305971][ T6424] ? clear_bhb_loop+0x30/0x80 [ 189.310680][ T6424] ? clear_bhb_loop+0x30/0x80 [ 189.315641][ T6424] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 189.321546][ T6424] RIP: 0033:0x7fbad61c174e [ 189.325967][ T6424] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 189.345578][ T6424] RSP: 002b:00007fbad547cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 189.354009][ T6424] RAX: ffffffffffffffda RBX: 00007fbad547d6c0 RCX: 00007fbad61c174e [ 189.361998][ T6424] RDX: 0000000000000001 RSI: 00007fbad547d0b0 RDI: 0000000000000007 [ 189.369991][ T6424] RBP: 00007fbad547d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 189.378327][ T6424] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 189.386312][ T6424] R13: 000000000000000b R14: 00007fbad63a4f80 R15: 00007ffe2023ce08 [ 189.394308][ T6424] [ 189.397337][ T6431] CPU: 0 PID: 6431 Comm: syz.2.322 Not tainted syzkaller #0 [ 189.404645][ T6431] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 189.414735][ T6431] Call Trace: [ 189.418081][ T6431] [ 189.421006][ T6431] dump_stack_lvl+0x188/0x250 [ 189.425681][ T6431] ? show_regs_print_info+0x20/0x20 [ 189.430868][ T6431] ? load_image+0x400/0x400 [ 189.435385][ T6431] ? __lock_acquire+0x7d10/0x7d10 [ 189.440577][ T6431] should_fail+0x38c/0x4c0 [ 189.445096][ T6431] _copy_from_user+0x2e/0x170 [ 189.449876][ T6431] kstrtouint_from_user+0xd3/0x220 [ 189.454983][ T6431] ? kstrtol_from_user+0x2a0/0x2a0 [ 189.460193][ T6431] proc_fail_nth_write+0x8b/0x200 [ 189.465308][ T6431] ? proc_fail_nth_read+0x220/0x220 [ 189.470705][ T6431] ? common_file_perm+0x171/0x1c0 [ 189.475822][ T6431] ? proc_fail_nth_read+0x220/0x220 [ 189.481014][ T6431] vfs_write+0x30b/0xd60 [ 189.485358][ T6431] ? file_end_write+0x250/0x250 [ 189.490297][ T6431] ? __fget_files+0x40f/0x480 [ 189.494993][ T6431] ? mutex_lock_nested+0x17/0x20 [ 189.499945][ T6431] ? __fdget_pos+0x2bf/0x370 [ 189.504551][ T6431] ? ksys_write+0x71/0x260 [ 189.508971][ T6431] ksys_write+0x152/0x260 [ 189.513304][ T6431] ? __ia32_sys_read+0x80/0x80 [ 189.518171][ T6431] ? lockdep_hardirqs_on+0x94/0x140 [ 189.523360][ T6431] do_syscall_64+0x4c/0xa0 [ 189.528128][ T6431] ? clear_bhb_loop+0x30/0x80 [ 189.532795][ T6431] ? clear_bhb_loop+0x30/0x80 [ 189.537463][ T6431] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 189.543519][ T6431] RIP: 0033:0x7fbdb3b2c74e [ 189.547928][ T6431] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 189.567982][ T6431] RSP: 002b:00007fbdb2dc6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 189.576392][ T6431] RAX: ffffffffffffffda RBX: 00007fbdb2dc76c0 RCX: 00007fbdb3b2c74e 2026/04/25 10:13:27 executed programs: 316 [ 189.584362][ T6431] RDX: 0000000000000001 RSI: 00007fbdb2dc70b0 RDI: 0000000000000005 [ 189.592324][ T6431] RBP: 00007fbdb2dc70a0 R08: 0000000000000000 R09: 0000000000000000 [ 189.600284][ T6431] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 189.608250][ T6431] R13: 000000000000006e R14: 00007fbdb3d10058 R15: 00007ffc8d3c7768 [ 189.616553][ T6431] [ 189.627320][ T6432] CPU: 1 PID: 6432 Comm: syz.0.324 Not tainted syzkaller #0 [ 189.634683][ T6432] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 189.644740][ T6432] Call Trace: [ 189.648024][ T6432] [ 189.650981][ T6432] dump_stack_lvl+0x188/0x250 [ 189.655681][ T6432] ? show_regs_print_info+0x20/0x20 [ 189.660999][ T6432] ? load_image+0x400/0x400 [ 189.665590][ T6432] ? __lock_acquire+0x7d10/0x7d10 [ 189.670618][ T6432] should_fail+0x38c/0x4c0 [ 189.675136][ T6432] _copy_from_user+0x2e/0x170 [ 189.680094][ T6432] kstrtouint_from_user+0xd3/0x220 [ 189.685314][ T6432] ? kstrtol_from_user+0x2a0/0x2a0 [ 189.690655][ T6432] proc_fail_nth_write+0x8b/0x200 [ 189.695756][ T6432] ? proc_fail_nth_read+0x220/0x220 [ 189.701059][ T6432] ? common_file_perm+0x171/0x1c0 [ 189.706157][ T6432] ? proc_fail_nth_read+0x220/0x220 [ 189.711609][ T6432] vfs_write+0x30b/0xd60 [ 189.715847][ T6432] ? file_end_write+0x250/0x250 [ 189.720803][ T6432] ? __fget_files+0x40f/0x480 [ 189.725596][ T6432] ? mutex_lock_nested+0x17/0x20 [ 189.730679][ T6432] ? __fdget_pos+0x2bf/0x370 [ 189.735422][ T6432] ? ksys_write+0x71/0x260 [ 189.740148][ T6432] ksys_write+0x152/0x260 [ 189.744688][ T6432] ? __ia32_sys_read+0x80/0x80 [ 189.749479][ T6432] ? lockdep_hardirqs_on+0x94/0x140 [ 189.754767][ T6432] do_syscall_64+0x4c/0xa0 [ 189.759194][ T6432] ? clear_bhb_loop+0x30/0x80 [ 189.764058][ T6432] ? clear_bhb_loop+0x30/0x80 [ 189.768763][ T6432] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 189.775024][ T6432] RIP: 0033:0x7f864b3a574e [ 189.779462][ T6432] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 189.799243][ T6432] RSP: 002b:00007f864a63fff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 189.807655][ T6432] RAX: ffffffffffffffda RBX: 00007f864a6406c0 RCX: 00007f864b3a574e [ 189.815621][ T6432] RDX: 0000000000000001 RSI: 00007f864a6400b0 RDI: 0000000000000005 [ 189.823585][ T6432] RBP: 00007f864a6400a0 R08: 0000000000000000 R09: 0000000000000000 [ 189.831580][ T6432] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 189.839711][ T6432] R13: 000000000000006e R14: 00007f864b589058 R15: 00007ffeb91066c8 [ 189.847706][ T6432] [ 189.860081][ T6428] CPU: 1 PID: 6428 Comm: syz.1.321 Not tainted syzkaller #0 [ 189.867428][ T6428] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 189.877504][ T6428] Call Trace: [ 189.880799][ T6428] [ 189.883743][ T6428] dump_stack_lvl+0x188/0x250 [ 189.888450][ T6428] ? show_regs_print_info+0x20/0x20 [ 189.893805][ T6428] ? load_image+0x400/0x400 [ 189.898463][ T6428] ? __lock_acquire+0x7d10/0x7d10 [ 189.903520][ T6428] should_fail+0x38c/0x4c0 [ 189.908051][ T6428] _copy_from_user+0x2e/0x170 [ 189.912744][ T6428] kstrtouint_from_user+0xd3/0x220 [ 189.918168][ T6428] ? kstrtol_from_user+0x2a0/0x2a0 [ 189.923588][ T6428] proc_fail_nth_write+0x8b/0x200 [ 189.928696][ T6428] ? proc_fail_nth_read+0x220/0x220 [ 189.934803][ T6428] ? common_file_perm+0x171/0x1c0 [ 189.940042][ T6428] ? proc_fail_nth_read+0x220/0x220 [ 189.945434][ T6428] vfs_write+0x30b/0xd60 [ 189.949682][ T6428] ? file_end_write+0x250/0x250 [ 189.954525][ T6428] ? __fget_files+0x40f/0x480 [ 189.959195][ T6428] ? mutex_lock_nested+0x17/0x20 [ 189.964216][ T6428] ? __fdget_pos+0x2bf/0x370 [ 189.968881][ T6428] ? ksys_write+0x71/0x260 [ 189.973691][ T6428] ksys_write+0x152/0x260 [ 189.978332][ T6428] ? __ia32_sys_read+0x80/0x80 [ 189.983302][ T6428] ? lockdep_hardirqs_on+0x94/0x140 [ 189.988607][ T6428] do_syscall_64+0x4c/0xa0 [ 189.993185][ T6428] ? clear_bhb_loop+0x30/0x80 [ 189.997856][ T6428] ? clear_bhb_loop+0x30/0x80 [ 190.002614][ T6428] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 190.008517][ T6428] RIP: 0033:0x7f3baf05d74e [ 190.012981][ T6428] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 190.032809][ T6428] RSP: 002b:00007f3bae2f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 190.041313][ T6428] RAX: ffffffffffffffda RBX: 00007f3bae2f86c0 RCX: 00007f3baf05d74e [ 190.049274][ T6428] RDX: 0000000000000001 RSI: 00007f3bae2f80b0 RDI: 0000000000000005 [ 190.057238][ T6428] RBP: 00007f3bae2f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 190.065373][ T6428] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 190.073606][ T6428] R13: 000000000000006e R14: 00007f3baf241058 R15: 00007ffeabae9a08 [ 190.081994][ T6428] [ 190.136692][ T6434] FAULT_INJECTION: forcing a failure. [ 190.136692][ T6434] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 190.160893][ T6436] FAULT_INJECTION: forcing a failure. [ 190.160893][ T6436] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 190.161968][ T6441] FAULT_INJECTION: forcing a failure. [ 190.161968][ T6441] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 190.188169][ T6434] CPU: 1 PID: 6434 Comm: syz.4.325 Not tainted syzkaller #0 [ 190.195937][ T6434] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 190.207385][ T6434] Call Trace: [ 190.210770][ T6434] [ 190.213841][ T6434] dump_stack_lvl+0x188/0x250 [ 190.218723][ T6434] ? show_regs_print_info+0x20/0x20 [ 190.223959][ T6434] ? load_image+0x400/0x400 [ 190.229013][ T6434] ? __lock_acquire+0x7d10/0x7d10 [ 190.234405][ T6434] should_fail+0x38c/0x4c0 [ 190.239095][ T6434] _copy_from_user+0x2e/0x170 [ 190.243804][ T6434] kstrtouint_from_user+0xd3/0x220 [ 190.249273][ T6434] ? kstrtol_from_user+0x2a0/0x2a0 [ 190.254434][ T6434] proc_fail_nth_write+0x8b/0x200 [ 190.259481][ T6434] ? proc_fail_nth_read+0x220/0x220 [ 190.264778][ T6434] ? common_file_perm+0x171/0x1c0 [ 190.269852][ T6434] ? proc_fail_nth_read+0x220/0x220 [ 190.275173][ T6434] vfs_write+0x30b/0xd60 [ 190.279553][ T6434] ? file_end_write+0x250/0x250 [ 190.284501][ T6434] ? __fget_files+0x40f/0x480 [ 190.289202][ T6434] ? mutex_lock_nested+0x17/0x20 [ 190.294136][ T6434] ? __fdget_pos+0x2bf/0x370 [ 190.298793][ T6434] ? ksys_write+0x71/0x260 [ 190.303233][ T6434] ksys_write+0x152/0x260 [ 190.307578][ T6434] ? __ia32_sys_read+0x80/0x80 [ 190.312451][ T6434] ? lockdep_hardirqs_on+0x94/0x140 [ 190.317853][ T6434] do_syscall_64+0x4c/0xa0 [ 190.322360][ T6434] ? clear_bhb_loop+0x30/0x80 [ 190.327033][ T6434] ? clear_bhb_loop+0x30/0x80 [ 190.331897][ T6434] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 190.337892][ T6434] RIP: 0033:0x7f16d038274e [ 190.342324][ T6434] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 190.362211][ T6434] RSP: 002b:00007f16cf63dff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 190.370640][ T6434] RAX: ffffffffffffffda RBX: 00007f16cf63e6c0 RCX: 00007f16d038274e [ 190.378635][ T6434] RDX: 0000000000000001 RSI: 00007f16cf63e0b0 RDI: 0000000000000007 [ 190.386733][ T6434] RBP: 00007f16cf63e0a0 R08: 0000000000000000 R09: 0000000000000000 [ 190.394895][ T6434] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 190.402902][ T6434] R13: 000000000000000b R14: 00007f16d0565f80 R15: 00007ffc849792c8 [ 190.410995][ T6434] [ 190.417593][ T6443] FAULT_INJECTION: forcing a failure. [ 190.417593][ T6443] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 190.432305][ T6442] FAULT_INJECTION: forcing a failure. [ 190.432305][ T6442] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 190.436879][ T6436] CPU: 0 PID: 6436 Comm: syz.1.327 Not tainted syzkaller #0 [ 190.452637][ T6436] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 190.463138][ T6436] Call Trace: [ 190.466438][ T6436] [ 190.469364][ T6436] dump_stack_lvl+0x188/0x250 [ 190.475135][ T6436] ? show_regs_print_info+0x20/0x20 [ 190.480360][ T6436] ? load_image+0x400/0x400 [ 190.484948][ T6436] ? __lock_acquire+0x7d10/0x7d10 [ 190.490515][ T6436] should_fail+0x38c/0x4c0 [ 190.495235][ T6436] _copy_from_user+0x2e/0x170 [ 190.499987][ T6436] kstrtouint_from_user+0xd3/0x220 [ 190.505100][ T6436] ? kstrtol_from_user+0x2a0/0x2a0 [ 190.510213][ T6436] proc_fail_nth_write+0x8b/0x200 [ 190.515231][ T6436] ? proc_fail_nth_read+0x220/0x220 [ 190.520428][ T6436] ? common_file_perm+0x171/0x1c0 [ 190.525448][ T6436] ? proc_fail_nth_read+0x220/0x220 [ 190.530730][ T6436] vfs_write+0x30b/0xd60 [ 190.535146][ T6436] ? file_end_write+0x250/0x250 [ 190.540013][ T6436] ? __fget_files+0x40f/0x480 [ 190.544952][ T6436] ? mutex_lock_nested+0x17/0x20 [ 190.549918][ T6436] ? __fdget_pos+0x2bf/0x370 [ 190.554500][ T6436] ? ksys_write+0x71/0x260 [ 190.558920][ T6436] ksys_write+0x152/0x260 [ 190.563350][ T6436] ? __ia32_sys_read+0x80/0x80 [ 190.568105][ T6436] ? lockdep_hardirqs_on+0x94/0x140 [ 190.573323][ T6436] do_syscall_64+0x4c/0xa0 [ 190.577853][ T6436] ? clear_bhb_loop+0x30/0x80 [ 190.582608][ T6436] ? clear_bhb_loop+0x30/0x80 [ 190.587390][ T6436] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 190.593323][ T6436] RIP: 0033:0x7f3baf05d74e [ 190.597851][ T6436] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 190.617493][ T6436] RSP: 002b:00007f3bae318ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 190.625904][ T6436] RAX: ffffffffffffffda RBX: 00007f3bae3196c0 RCX: 00007f3baf05d74e [ 190.633878][ T6436] RDX: 0000000000000001 RSI: 00007f3bae3190b0 RDI: 0000000000000007 [ 190.641931][ T6436] RBP: 00007f3bae3190a0 R08: 0000000000000000 R09: 0000000000000000 [ 190.649897][ T6436] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 190.658288][ T6436] R13: 000000000000000b R14: 00007f3baf240f80 R15: 00007ffeabae9a08 [ 190.666275][ T6436] [ 190.673133][ T6443] CPU: 0 PID: 6443 Comm: syz.0.329 Not tainted syzkaller #0 [ 190.680560][ T6443] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 190.690979][ T6443] Call Trace: [ 190.694375][ T6443] [ 190.697307][ T6443] dump_stack_lvl+0x188/0x250 [ 190.702083][ T6443] ? show_regs_print_info+0x20/0x20 [ 190.707284][ T6443] ? load_image+0x400/0x400 [ 190.711792][ T6443] ? __lock_acquire+0x7d10/0x7d10 [ 190.716943][ T6443] should_fail+0x38c/0x4c0 [ 190.721860][ T6443] _copy_from_user+0x2e/0x170 [ 190.726667][ T6443] kstrtouint_from_user+0xd3/0x220 [ 190.731801][ T6443] ? kstrtol_from_user+0x2a0/0x2a0 [ 190.736943][ T6443] proc_fail_nth_write+0x8b/0x200 [ 190.742259][ T6443] ? proc_fail_nth_read+0x220/0x220 [ 190.747918][ T6443] ? common_file_perm+0x171/0x1c0 [ 190.753072][ T6443] ? proc_fail_nth_read+0x220/0x220 [ 190.758356][ T6443] vfs_write+0x30b/0xd60 [ 190.762611][ T6443] ? file_end_write+0x250/0x250 [ 190.767552][ T6443] ? __fget_files+0x40f/0x480 [ 190.772234][ T6443] ? mutex_lock_nested+0x17/0x20 [ 190.777554][ T6443] ? __fdget_pos+0x2bf/0x370 [ 190.782357][ T6443] ? ksys_write+0x71/0x260 [ 190.787116][ T6443] ksys_write+0x152/0x260 [ 190.791466][ T6443] ? __ia32_sys_read+0x80/0x80 [ 190.796328][ T6443] ? lockdep_hardirqs_on+0x94/0x140 [ 190.801546][ T6443] do_syscall_64+0x4c/0xa0 [ 190.806071][ T6443] ? clear_bhb_loop+0x30/0x80 [ 190.810764][ T6443] ? clear_bhb_loop+0x30/0x80 [ 190.815462][ T6443] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 190.821486][ T6443] RIP: 0033:0x7f864b3a574e [ 190.826078][ T6443] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 190.846049][ T6443] RSP: 002b:00007f864a63fff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 190.854574][ T6443] RAX: ffffffffffffffda RBX: 00007f864a6406c0 RCX: 00007f864b3a574e [ 190.862554][ T6443] RDX: 0000000000000001 RSI: 00007f864a6400b0 RDI: 0000000000000005 [ 190.870714][ T6443] RBP: 00007f864a6400a0 R08: 0000000000000000 R09: 0000000000000000 [ 190.878864][ T6443] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 190.887318][ T6443] R13: 000000000000006e R14: 00007f864b589058 R15: 00007ffeb91066c8 [ 190.895362][ T6443] [ 190.898407][ T6441] CPU: 1 PID: 6441 Comm: syz.3.326 Not tainted syzkaller #0 [ 190.905802][ T6441] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 190.916733][ T6441] Call Trace: [ 190.920044][ T6441] [ 190.923162][ T6441] dump_stack_lvl+0x188/0x250 [ 190.928002][ T6441] ? show_regs_print_info+0x20/0x20 [ 190.933314][ T6441] ? load_image+0x400/0x400 [ 190.937956][ T6441] ? __lock_acquire+0x7d10/0x7d10 [ 190.943313][ T6441] should_fail+0x38c/0x4c0 [ 190.947760][ T6441] _copy_from_user+0x2e/0x170 [ 190.952658][ T6441] kstrtouint_from_user+0xd3/0x220 [ 190.957943][ T6441] ? kstrtol_from_user+0x2a0/0x2a0 [ 190.963386][ T6441] proc_fail_nth_write+0x8b/0x200 [ 190.968418][ T6441] ? proc_fail_nth_read+0x220/0x220 [ 190.973794][ T6441] ? common_file_perm+0x171/0x1c0 [ 190.978964][ T6441] ? proc_fail_nth_read+0x220/0x220 [ 190.984207][ T6441] vfs_write+0x30b/0xd60 [ 190.988590][ T6441] ? file_end_write+0x250/0x250 [ 190.993595][ T6441] ? __fget_files+0x40f/0x480 [ 190.998423][ T6441] ? mutex_lock_nested+0x17/0x20 [ 191.003578][ T6441] ? __fdget_pos+0x2bf/0x370 [ 191.008385][ T6441] ? ksys_write+0x71/0x260 [ 191.013087][ T6441] ksys_write+0x152/0x260 [ 191.017605][ T6441] ? __ia32_sys_read+0x80/0x80 [ 191.022362][ T6441] ? lockdep_hardirqs_on+0x94/0x140 [ 191.027558][ T6441] do_syscall_64+0x4c/0xa0 [ 191.032466][ T6441] ? clear_bhb_loop+0x30/0x80 [ 191.037705][ T6441] ? clear_bhb_loop+0x30/0x80 [ 191.042409][ T6441] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 191.048955][ T6441] RIP: 0033:0x7fbad61c174e [ 191.053394][ T6441] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 191.073284][ T6441] RSP: 002b:00007fbad547cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 191.081727][ T6441] RAX: ffffffffffffffda RBX: 00007fbad547d6c0 RCX: 00007fbad61c174e [ 191.090039][ T6441] RDX: 0000000000000001 RSI: 00007fbad547d0b0 RDI: 0000000000000007 [ 191.098043][ T6441] RBP: 00007fbad547d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 191.106337][ T6441] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 191.114443][ T6441] R13: 000000000000000b R14: 00007fbad63a4f80 R15: 00007ffe2023ce08 [ 191.122454][ T6441] [ 191.131367][ T6442] CPU: 0 PID: 6442 Comm: syz.2.328 Not tainted syzkaller #0 [ 191.138797][ T6442] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 191.149011][ T6442] Call Trace: [ 191.152414][ T6442] [ 191.155545][ T6442] dump_stack_lvl+0x188/0x250 [ 191.160411][ T6442] ? show_regs_print_info+0x20/0x20 [ 191.165713][ T6442] ? load_image+0x400/0x400 [ 191.170301][ T6442] ? __lock_acquire+0x7d10/0x7d10 [ 191.175329][ T6442] should_fail+0x38c/0x4c0 [ 191.179778][ T6442] _copy_from_user+0x2e/0x170 [ 191.184888][ T6442] kstrtouint_from_user+0xd3/0x220 [ 191.190259][ T6442] ? kstrtol_from_user+0x2a0/0x2a0 [ 191.195417][ T6442] proc_fail_nth_write+0x8b/0x200 [ 191.200653][ T6442] ? proc_fail_nth_read+0x220/0x220 [ 191.205969][ T6442] ? common_file_perm+0x171/0x1c0 [ 191.210996][ T6442] ? proc_fail_nth_read+0x220/0x220 [ 191.216201][ T6442] vfs_write+0x30b/0xd60 [ 191.220533][ T6442] ? file_end_write+0x250/0x250 [ 191.225463][ T6442] ? __fget_files+0x40f/0x480 [ 191.230138][ T6442] ? mutex_lock_nested+0x17/0x20 [ 191.235070][ T6442] ? __fdget_pos+0x2bf/0x370 [ 191.239648][ T6442] ? ksys_write+0x71/0x260 [ 191.244141][ T6442] ksys_write+0x152/0x260 [ 191.248581][ T6442] ? __ia32_sys_read+0x80/0x80 [ 191.253434][ T6442] ? lockdep_hardirqs_on+0x94/0x140 [ 191.258667][ T6442] do_syscall_64+0x4c/0xa0 [ 191.263104][ T6442] ? clear_bhb_loop+0x30/0x80 [ 191.267770][ T6442] ? clear_bhb_loop+0x30/0x80 [ 191.272536][ T6442] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 191.278425][ T6442] RIP: 0033:0x7fbdb3b2c74e [ 191.282921][ T6442] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 191.302641][ T6442] RSP: 002b:00007fbdb2de7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 191.311050][ T6442] RAX: ffffffffffffffda RBX: 00007fbdb2de86c0 RCX: 00007fbdb3b2c74e [ 191.319007][ T6442] RDX: 0000000000000001 RSI: 00007fbdb2de80b0 RDI: 0000000000000006 [ 191.327097][ T6442] RBP: 00007fbdb2de80a0 R08: 0000000000000000 R09: 0000000000000000 [ 191.335145][ T6442] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 191.343106][ T6442] R13: 000000000000000b R14: 00007fbdb3d0ff80 R15: 00007ffc8d3c7768 [ 191.351171][ T6442] [ 191.387970][ T6449] FAULT_INJECTION: forcing a failure. [ 191.387970][ T6449] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 191.387970][ T6447] FAULT_INJECTION: forcing a failure. [ 191.387970][ T6447] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 191.388004][ T6449] CPU: 0 PID: 6449 Comm: syz.4.330 Not tainted syzkaller #0 [ 191.421996][ T6449] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 191.432170][ T6449] Call Trace: [ 191.435577][ T6449] [ 191.438676][ T6449] dump_stack_lvl+0x188/0x250 [ 191.443353][ T6449] ? show_regs_print_info+0x20/0x20 [ 191.448571][ T6449] ? load_image+0x400/0x400 [ 191.453242][ T6449] ? __lock_acquire+0x7d10/0x7d10 [ 191.458277][ T6449] should_fail+0x38c/0x4c0 [ 191.462699][ T6449] _copy_from_user+0x2e/0x170 [ 191.467368][ T6449] kstrtouint_from_user+0xd3/0x220 [ 191.472467][ T6449] ? kstrtol_from_user+0x2a0/0x2a0 [ 191.478095][ T6449] proc_fail_nth_write+0x8b/0x200 [ 191.483147][ T6449] ? proc_fail_nth_read+0x220/0x220 [ 191.488488][ T6449] ? common_file_perm+0x171/0x1c0 [ 191.493751][ T6449] ? proc_fail_nth_read+0x220/0x220 [ 191.498988][ T6449] vfs_write+0x30b/0xd60 [ 191.503365][ T6449] ? file_end_write+0x250/0x250 [ 191.508340][ T6449] ? __fget_files+0x40f/0x480 [ 191.513209][ T6449] ? mutex_lock_nested+0x17/0x20 [ 191.518231][ T6449] ? __fdget_pos+0x2bf/0x370 [ 191.522905][ T6449] ? ksys_write+0x71/0x260 [ 191.527442][ T6449] ksys_write+0x152/0x260 [ 191.531795][ T6449] ? __ia32_sys_read+0x80/0x80 [ 191.536562][ T6449] ? lockdep_hardirqs_on+0x94/0x140 [ 191.541850][ T6449] do_syscall_64+0x4c/0xa0 [ 191.546267][ T6449] ? clear_bhb_loop+0x30/0x80 [ 191.551090][ T6449] ? clear_bhb_loop+0x30/0x80 [ 191.555799][ T6449] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 191.561721][ T6449] RIP: 0033:0x7f16d038274e [ 191.566129][ T6449] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 191.585789][ T6449] RSP: 002b:00007f16cf63dff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 191.594653][ T6449] RAX: ffffffffffffffda RBX: 00007f16cf63e6c0 RCX: 00007f16d038274e [ 191.602821][ T6449] RDX: 0000000000000001 RSI: 00007f16cf63e0b0 RDI: 0000000000000007 [ 191.611390][ T6449] RBP: 00007f16cf63e0a0 R08: 0000000000000000 R09: 0000000000000000 [ 191.620239][ T6449] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 191.628313][ T6449] R13: 000000000000000b R14: 00007f16d0565f80 R15: 00007ffc849792c8 [ 191.636290][ T6449] [ 191.641052][ T6447] CPU: 0 PID: 6447 Comm: syz.1.331 Not tainted syzkaller #0 [ 191.648368][ T6447] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 191.658321][ T6453] FAULT_INJECTION: forcing a failure. [ 191.658321][ T6453] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 191.658523][ T6447] Call Trace: [ 191.658532][ T6447] [ 191.678149][ T6447] dump_stack_lvl+0x188/0x250 [ 191.682847][ T6447] ? show_regs_print_info+0x20/0x20 [ 191.688054][ T6447] ? load_image+0x400/0x400 [ 191.692654][ T6447] ? __lock_acquire+0x7d10/0x7d10 [ 191.697788][ T6447] should_fail+0x38c/0x4c0 [ 191.702317][ T6447] _copy_from_user+0x2e/0x170 [ 191.707080][ T6447] kstrtouint_from_user+0xd3/0x220 [ 191.712221][ T6447] ? kstrtol_from_user+0x2a0/0x2a0 [ 191.717370][ T6447] proc_fail_nth_write+0x8b/0x200 [ 191.722420][ T6447] ? proc_fail_nth_read+0x220/0x220 [ 191.727636][ T6447] ? common_file_perm+0x171/0x1c0 [ 191.732883][ T6447] ? proc_fail_nth_read+0x220/0x220 [ 191.738111][ T6447] vfs_write+0x30b/0xd60 [ 191.742376][ T6447] ? file_end_write+0x250/0x250 [ 191.747247][ T6447] ? __fget_files+0x40f/0x480 [ 191.752098][ T6447] ? mutex_lock_nested+0x17/0x20 [ 191.757064][ T6447] ? __fdget_pos+0x2bf/0x370 [ 191.761657][ T6447] ? ksys_write+0x71/0x260 [ 191.766066][ T6447] ksys_write+0x152/0x260 [ 191.770591][ T6447] ? __ia32_sys_read+0x80/0x80 [ 191.775482][ T6447] ? lockdep_hardirqs_on+0x94/0x140 [ 191.780925][ T6447] do_syscall_64+0x4c/0xa0 [ 191.785373][ T6447] ? clear_bhb_loop+0x30/0x80 [ 191.790087][ T6447] ? clear_bhb_loop+0x30/0x80 [ 191.794877][ T6447] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 191.800758][ T6447] RIP: 0033:0x7f3baf05d74e [ 191.805250][ T6447] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 191.825038][ T6447] RSP: 002b:00007f3bae318ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 191.833556][ T6447] RAX: ffffffffffffffda RBX: 00007f3bae3196c0 RCX: 00007f3baf05d74e [ 191.841759][ T6447] RDX: 0000000000000001 RSI: 00007f3bae3190b0 RDI: 0000000000000007 [ 191.849728][ T6447] RBP: 00007f3bae3190a0 R08: 0000000000000000 R09: 0000000000000000 [ 191.857710][ T6447] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 191.865759][ T6447] R13: 000000000000000b R14: 00007f3baf240f80 R15: 00007ffeabae9a08 [ 191.873768][ T6447] [ 191.889651][ T6453] CPU: 1 PID: 6453 Comm: syz.3.333 Not tainted syzkaller #0 [ 191.897015][ T6453] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 191.907086][ T6453] Call Trace: [ 191.910473][ T6453] [ 191.913416][ T6453] dump_stack_lvl+0x188/0x250 [ 191.918121][ T6453] ? show_regs_print_info+0x20/0x20 [ 191.923343][ T6453] ? load_image+0x400/0x400 [ 191.927967][ T6453] ? __lock_acquire+0x7d10/0x7d10 [ 191.933073][ T6453] should_fail+0x38c/0x4c0 [ 191.937499][ T6453] _copy_from_user+0x2e/0x170 [ 191.942167][ T6453] kstrtouint_from_user+0xd3/0x220 [ 191.947271][ T6453] ? kstrtol_from_user+0x2a0/0x2a0 [ 191.952515][ T6453] proc_fail_nth_write+0x8b/0x200 [ 191.957561][ T6453] ? proc_fail_nth_read+0x220/0x220 [ 191.962853][ T6453] ? common_file_perm+0x171/0x1c0 [ 191.967888][ T6453] ? proc_fail_nth_read+0x220/0x220 [ 191.973254][ T6453] vfs_write+0x30b/0xd60 [ 191.977521][ T6453] ? file_end_write+0x250/0x250 [ 191.982392][ T6453] ? __fget_files+0x40f/0x480 [ 191.987086][ T6453] ? mutex_lock_nested+0x17/0x20 [ 191.992018][ T6453] ? __fdget_pos+0x2bf/0x370 [ 191.996765][ T6453] ? ksys_write+0x71/0x260 [ 192.001173][ T6453] ksys_write+0x152/0x260 [ 192.005491][ T6453] ? __ia32_sys_read+0x80/0x80 [ 192.010243][ T6453] ? lockdep_hardirqs_on+0x94/0x140 [ 192.015651][ T6453] do_syscall_64+0x4c/0xa0 [ 192.020081][ T6453] ? clear_bhb_loop+0x30/0x80 [ 192.025027][ T6453] ? clear_bhb_loop+0x30/0x80 [ 192.029770][ T6453] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 192.035771][ T6453] RIP: 0033:0x7fbad61c174e [ 192.040710][ T6453] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 192.060308][ T6453] RSP: 002b:00007fbad545bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 192.068720][ T6453] RAX: ffffffffffffffda RBX: 00007fbad545c6c0 RCX: 00007fbad61c174e [ 192.076741][ T6453] RDX: 0000000000000001 RSI: 00007fbad545c0b0 RDI: 0000000000000005 [ 192.084888][ T6453] RBP: 00007fbad545c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 192.092949][ T6453] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 192.101305][ T6453] R13: 000000000000006e R14: 00007fbad63a5058 R15: 00007ffe2023ce08 [ 192.109564][ T6453] [ 192.114609][ T6457] FAULT_INJECTION: forcing a failure. [ 192.114609][ T6457] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 192.129483][ T6458] FAULT_INJECTION: forcing a failure. [ 192.129483][ T6458] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 192.146262][ T6458] CPU: 0 PID: 6458 Comm: syz.2.334 Not tainted syzkaller #0 [ 192.153608][ T6458] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 192.163865][ T6458] Call Trace: [ 192.167157][ T6458] [ 192.170083][ T6458] dump_stack_lvl+0x188/0x250 [ 192.174790][ T6458] ? show_regs_print_info+0x20/0x20 [ 192.179974][ T6458] ? load_image+0x400/0x400 [ 192.184467][ T6458] ? __lock_acquire+0x7d10/0x7d10 [ 192.189484][ T6458] should_fail+0x38c/0x4c0 [ 192.193983][ T6458] _copy_from_user+0x2e/0x170 [ 192.198649][ T6458] kstrtouint_from_user+0xd3/0x220 [ 192.203835][ T6458] ? kstrtol_from_user+0x2a0/0x2a0 [ 192.208983][ T6458] proc_fail_nth_write+0x8b/0x200 [ 192.214123][ T6458] ? proc_fail_nth_read+0x220/0x220 [ 192.219348][ T6458] ? common_file_perm+0x171/0x1c0 [ 192.224392][ T6458] ? proc_fail_nth_read+0x220/0x220 [ 192.229684][ T6458] vfs_write+0x30b/0xd60 [ 192.234040][ T6458] ? file_end_write+0x250/0x250 [ 192.238885][ T6458] ? __fget_files+0x40f/0x480 [ 192.243555][ T6458] ? mutex_lock_nested+0x17/0x20 [ 192.248661][ T6458] ? __fdget_pos+0x2bf/0x370 [ 192.253239][ T6458] ? ksys_write+0x71/0x260 [ 192.257739][ T6458] ksys_write+0x152/0x260 [ 192.262056][ T6458] ? __ia32_sys_read+0x80/0x80 [ 192.266805][ T6458] ? lockdep_hardirqs_on+0x94/0x140 [ 192.271998][ T6458] do_syscall_64+0x4c/0xa0 [ 192.276428][ T6458] ? clear_bhb_loop+0x30/0x80 [ 192.281096][ T6458] ? clear_bhb_loop+0x30/0x80 [ 192.285766][ T6458] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 192.291644][ T6458] RIP: 0033:0x7fbdb3b2c74e [ 192.296055][ T6458] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 192.315704][ T6458] RSP: 002b:00007fbdb2dc6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 192.324120][ T6458] RAX: ffffffffffffffda RBX: 00007fbdb2dc76c0 RCX: 00007fbdb3b2c74e [ 192.332078][ T6458] RDX: 0000000000000001 RSI: 00007fbdb2dc70b0 RDI: 0000000000000005 [ 192.340036][ T6458] RBP: 00007fbdb2dc70a0 R08: 0000000000000000 R09: 0000000000000000 [ 192.347996][ T6458] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 192.355957][ T6458] R13: 000000000000006e R14: 00007fbdb3d10058 R15: 00007ffc8d3c7768 [ 192.363930][ T6458] [ 192.389575][ T6457] CPU: 0 PID: 6457 Comm: syz.0.332 Not tainted syzkaller #0 [ 192.397123][ T6457] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 192.407380][ T6457] Call Trace: [ 192.410663][ T6457] [ 192.413757][ T6457] dump_stack_lvl+0x188/0x250 [ 192.418442][ T6457] ? show_regs_print_info+0x20/0x20 [ 192.423630][ T6457] ? load_image+0x400/0x400 [ 192.428124][ T6457] ? __lock_acquire+0x7d10/0x7d10 [ 192.433143][ T6457] should_fail+0x38c/0x4c0 [ 192.437557][ T6457] _copy_from_user+0x2e/0x170 [ 192.442342][ T6457] kstrtouint_from_user+0xd3/0x220 [ 192.447480][ T6457] ? kstrtol_from_user+0x2a0/0x2a0 [ 192.452605][ T6457] proc_fail_nth_write+0x8b/0x200 [ 192.457625][ T6457] ? proc_fail_nth_read+0x220/0x220 [ 192.462812][ T6457] ? common_file_perm+0x171/0x1c0 [ 192.467840][ T6457] ? proc_fail_nth_read+0x220/0x220 [ 192.473297][ T6457] vfs_write+0x30b/0xd60 [ 192.477550][ T6457] ? file_end_write+0x250/0x250 [ 192.482417][ T6457] ? __fget_files+0x40f/0x480 [ 192.487172][ T6457] ? mutex_lock_nested+0x17/0x20 [ 192.492116][ T6457] ? __fdget_pos+0x2bf/0x370 [ 192.496724][ T6457] ? ksys_write+0x71/0x260 [ 192.501404][ T6457] ksys_write+0x152/0x260 [ 192.505760][ T6457] ? __ia32_sys_read+0x80/0x80 [ 192.510526][ T6457] ? lockdep_hardirqs_on+0x94/0x140 [ 192.515904][ T6457] do_syscall_64+0x4c/0xa0 [ 192.520708][ T6457] ? clear_bhb_loop+0x30/0x80 [ 192.525417][ T6457] ? clear_bhb_loop+0x30/0x80 [ 192.530148][ T6457] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 192.536501][ T6457] RIP: 0033:0x7f864b3a574e [ 192.540913][ T6457] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 192.560508][ T6457] RSP: 002b:00007f864a63fff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 192.569205][ T6457] RAX: ffffffffffffffda RBX: 00007f864a6406c0 RCX: 00007f864b3a574e [ 192.577173][ T6457] RDX: 0000000000000001 RSI: 00007f864a6400b0 RDI: 0000000000000005 [ 192.585224][ T6457] RBP: 00007f864a6400a0 R08: 0000000000000000 R09: 0000000000000000 [ 192.593191][ T6457] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 192.601395][ T6457] R13: 000000000000006e R14: 00007f864b589058 R15: 00007ffeb91066c8 [ 192.609474][ T6457] [ 192.614020][ T6463] FAULT_INJECTION: forcing a failure. [ 192.614020][ T6463] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 192.640199][ T6463] CPU: 1 PID: 6463 Comm: syz.1.336 Not tainted syzkaller #0 [ 192.647549][ T6463] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 192.657620][ T6463] Call Trace: [ 192.660902][ T6463] [ 192.663830][ T6463] dump_stack_lvl+0x188/0x250 [ 192.668589][ T6463] ? show_regs_print_info+0x20/0x20 [ 192.673887][ T6463] ? load_image+0x400/0x400 [ 192.678387][ T6463] ? __lock_acquire+0x7d10/0x7d10 [ 192.683582][ T6463] should_fail+0x38c/0x4c0 [ 192.688016][ T6463] _copy_from_user+0x2e/0x170 [ 192.692774][ T6463] kstrtouint_from_user+0xd3/0x220 [ 192.698149][ T6463] ? kstrtol_from_user+0x2a0/0x2a0 [ 192.703255][ T6463] proc_fail_nth_write+0x8b/0x200 [ 192.708441][ T6463] ? proc_fail_nth_read+0x220/0x220 [ 192.713647][ T6463] ? common_file_perm+0x171/0x1c0 [ 192.718775][ T6463] ? proc_fail_nth_read+0x220/0x220 [ 192.723965][ T6463] vfs_write+0x30b/0xd60 [ 192.728317][ T6463] ? file_end_write+0x250/0x250 [ 192.733541][ T6463] ? __fget_files+0x40f/0x480 [ 192.738263][ T6463] ? mutex_lock_nested+0x17/0x20 [ 192.743196][ T6463] ? __fdget_pos+0x2bf/0x370 [ 192.747775][ T6463] ? ksys_write+0x71/0x260 [ 192.752227][ T6463] ksys_write+0x152/0x260 [ 192.756543][ T6463] ? __ia32_sys_read+0x80/0x80 [ 192.761300][ T6463] ? lockdep_hardirqs_on+0x94/0x140 [ 192.766486][ T6463] do_syscall_64+0x4c/0xa0 [ 192.770892][ T6463] ? clear_bhb_loop+0x30/0x80 [ 192.775641][ T6463] ? clear_bhb_loop+0x30/0x80 [ 192.780478][ T6463] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 192.786650][ T6463] RIP: 0033:0x7f3baf05d74e [ 192.791082][ T6463] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 192.810738][ T6463] RSP: 002b:00007f3bae2f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 192.819159][ T6463] RAX: ffffffffffffffda RBX: 00007f3bae2f86c0 RCX: 00007f3baf05d74e [ 192.827124][ T6463] RDX: 0000000000000001 RSI: 00007f3bae2f80b0 RDI: 0000000000000005 [ 192.835087][ T6463] RBP: 00007f3bae2f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 192.843044][ T6463] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 192.850997][ T6463] R13: 000000000000006e R14: 00007f3baf241058 R15: 00007ffeabae9a08 [ 192.859283][ T6463] [ 192.865113][ T6466] FAULT_INJECTION: forcing a failure. [ 192.865113][ T6466] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 192.883980][ T6467] FAULT_INJECTION: forcing a failure. [ 192.883980][ T6467] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 192.905496][ T6466] CPU: 1 PID: 6466 Comm: syz.4.335 Not tainted syzkaller #0 [ 192.912830][ T6466] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 192.922902][ T6466] Call Trace: [ 192.926191][ T6466] [ 192.929135][ T6466] dump_stack_lvl+0x188/0x250 [ 192.933823][ T6466] ? show_regs_print_info+0x20/0x20 [ 192.939052][ T6466] ? load_image+0x400/0x400 [ 192.943567][ T6466] ? __lock_acquire+0x7d10/0x7d10 [ 192.948692][ T6466] should_fail+0x38c/0x4c0 [ 192.953118][ T6466] _copy_from_user+0x2e/0x170 [ 192.957893][ T6466] kstrtouint_from_user+0xd3/0x220 [ 192.963105][ T6466] ? kstrtol_from_user+0x2a0/0x2a0 [ 192.968292][ T6466] proc_fail_nth_write+0x8b/0x200 [ 192.973344][ T6466] ? proc_fail_nth_read+0x220/0x220 [ 192.979003][ T6466] ? common_file_perm+0x171/0x1c0 [ 192.984185][ T6466] ? proc_fail_nth_read+0x220/0x220 [ 192.989417][ T6466] vfs_write+0x30b/0xd60 [ 192.993693][ T6466] ? file_end_write+0x250/0x250 [ 192.998575][ T6466] ? __fget_files+0x40f/0x480 [ 192.999223][ T6469] FAULT_INJECTION: forcing a failure. [ 192.999223][ T6469] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 193.003500][ T6466] ? mutex_lock_nested+0x17/0x20 [ 193.003535][ T6466] ? __fdget_pos+0x2bf/0x370 [ 193.003550][ T6466] ? ksys_write+0x71/0x260 [ 193.003568][ T6466] ksys_write+0x152/0x260 [ 193.003586][ T6466] ? __ia32_sys_read+0x80/0x80 [ 193.003610][ T6466] ? lockdep_hardirqs_on+0x94/0x140 [ 193.003635][ T6466] do_syscall_64+0x4c/0xa0 [ 193.003651][ T6466] ? clear_bhb_loop+0x30/0x80 [ 193.003667][ T6466] ? clear_bhb_loop+0x30/0x80 [ 193.058943][ T6466] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 193.064949][ T6466] RIP: 0033:0x7f16d038274e [ 193.069398][ T6466] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 193.089034][ T6466] RSP: 002b:00007f16cf61cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 193.097597][ T6466] RAX: ffffffffffffffda RBX: 00007f16cf61d6c0 RCX: 00007f16d038274e [ 193.105826][ T6466] RDX: 0000000000000001 RSI: 00007f16cf61d0b0 RDI: 0000000000000005 [ 193.113825][ T6466] RBP: 00007f16cf61d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 193.121810][ T6466] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 193.129790][ T6466] R13: 000000000000006e R14: 00007f16d0566058 R15: 00007ffc849792c8 [ 193.137783][ T6466] [ 193.141260][ T6467] CPU: 0 PID: 6467 Comm: syz.3.337 Not tainted syzkaller #0 [ 193.148562][ T6467] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 193.158727][ T6467] Call Trace: [ 193.162350][ T6467] [ 193.165363][ T6467] dump_stack_lvl+0x188/0x250 [ 193.170175][ T6467] ? show_regs_print_info+0x20/0x20 [ 193.175373][ T6467] ? load_image+0x400/0x400 [ 193.180019][ T6467] ? __lock_acquire+0x7d10/0x7d10 [ 193.185164][ T6467] should_fail+0x38c/0x4c0 [ 193.189647][ T6467] _copy_from_user+0x2e/0x170 [ 193.194317][ T6467] kstrtouint_from_user+0xd3/0x220 [ 193.199425][ T6467] ? kstrtol_from_user+0x2a0/0x2a0 [ 193.204667][ T6467] proc_fail_nth_write+0x8b/0x200 [ 193.209689][ T6467] ? proc_fail_nth_read+0x220/0x220 [ 193.214905][ T6467] ? common_file_perm+0x171/0x1c0 [ 193.219936][ T6467] ? proc_fail_nth_read+0x220/0x220 [ 193.225213][ T6467] vfs_write+0x30b/0xd60 [ 193.229473][ T6467] ? file_end_write+0x250/0x250 [ 193.234320][ T6467] ? __fget_files+0x40f/0x480 [ 193.238991][ T6467] ? mutex_lock_nested+0x17/0x20 [ 193.243928][ T6467] ? __fdget_pos+0x2bf/0x370 [ 193.248500][ T6467] ? ksys_write+0x71/0x260 [ 193.252914][ T6467] ksys_write+0x152/0x260 [ 193.257260][ T6467] ? __ia32_sys_read+0x80/0x80 [ 193.262015][ T6467] ? lockdep_hardirqs_on+0x94/0x140 [ 193.267204][ T6467] do_syscall_64+0x4c/0xa0 [ 193.271608][ T6467] ? clear_bhb_loop+0x30/0x80 [ 193.276441][ T6467] ? clear_bhb_loop+0x30/0x80 [ 193.281142][ T6467] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 193.287031][ T6467] RIP: 0033:0x7fbad61c174e [ 193.291442][ T6467] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 193.311124][ T6467] RSP: 002b:00007fbad545bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 193.319711][ T6467] RAX: ffffffffffffffda RBX: 00007fbad545c6c0 RCX: 00007fbad61c174e [ 193.327670][ T6467] RDX: 0000000000000001 RSI: 00007fbad545c0b0 RDI: 0000000000000005 [ 193.335635][ T6467] RBP: 00007fbad545c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 193.343776][ T6467] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 193.352166][ T6467] R13: 000000000000006e R14: 00007fbad63a5058 R15: 00007ffe2023ce08 [ 193.360235][ T6467] [ 193.373884][ T6469] CPU: 0 PID: 6469 Comm: syz.0.338 Not tainted syzkaller #0 [ 193.381314][ T6469] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 193.391988][ T6469] Call Trace: [ 193.395266][ T6469] [ 193.398194][ T6469] dump_stack_lvl+0x188/0x250 [ 193.402873][ T6469] ? show_regs_print_info+0x20/0x20 [ 193.408144][ T6469] ? load_image+0x400/0x400 [ 193.412723][ T6469] ? __lock_acquire+0x7d10/0x7d10 [ 193.417742][ T6469] should_fail+0x38c/0x4c0 [ 193.422151][ T6469] _copy_from_user+0x2e/0x170 [ 193.426818][ T6469] kstrtouint_from_user+0xd3/0x220 [ 193.431918][ T6469] ? kstrtol_from_user+0x2a0/0x2a0 [ 193.437029][ T6469] proc_fail_nth_write+0x8b/0x200 [ 193.442041][ T6469] ? proc_fail_nth_read+0x220/0x220 [ 193.447223][ T6469] ? common_file_perm+0x171/0x1c0 [ 193.452235][ T6469] ? proc_fail_nth_read+0x220/0x220 [ 193.457594][ T6469] vfs_write+0x30b/0xd60 [ 193.461835][ T6469] ? file_end_write+0x250/0x250 [ 193.466675][ T6469] ? __fget_files+0x40f/0x480 [ 193.471342][ T6469] ? mutex_lock_nested+0x17/0x20 [ 193.476266][ T6469] ? __fdget_pos+0x2bf/0x370 [ 193.480840][ T6469] ? ksys_write+0x71/0x260 [ 193.485257][ T6469] ksys_write+0x152/0x260 [ 193.489963][ T6469] ? __ia32_sys_read+0x80/0x80 [ 193.494786][ T6469] ? lockdep_hardirqs_on+0x94/0x140 [ 193.500208][ T6469] do_syscall_64+0x4c/0xa0 [ 193.504680][ T6469] ? clear_bhb_loop+0x30/0x80 [ 193.509393][ T6469] ? clear_bhb_loop+0x30/0x80 [ 193.514096][ T6469] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 193.520143][ T6469] RIP: 0033:0x7f864b3a574e [ 193.524682][ T6469] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 193.544500][ T6469] RSP: 002b:00007f864a660ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 193.553007][ T6469] RAX: ffffffffffffffda RBX: 00007f864a6616c0 RCX: 00007f864b3a574e [ 193.561001][ T6469] RDX: 0000000000000001 RSI: 00007f864a6610b0 RDI: 0000000000000007 [ 193.569121][ T6469] RBP: 00007f864a6610a0 R08: 0000000000000000 R09: 0000000000000000 [ 193.577135][ T6469] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 193.585247][ T6469] R13: 000000000000000b R14: 00007f864b588f80 R15: 00007ffeb91066c8 [ 193.593329][ T6469] [ 193.616596][ T6473] FAULT_INJECTION: forcing a failure. [ 193.616596][ T6473] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 193.633736][ T6472] FAULT_INJECTION: forcing a failure. [ 193.633736][ T6472] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 193.648642][ T6477] FAULT_INJECTION: forcing a failure. [ 193.648642][ T6477] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 193.666882][ T6480] FAULT_INJECTION: forcing a failure. [ 193.666882][ T6480] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 193.682743][ T6481] FAULT_INJECTION: forcing a failure. [ 193.682743][ T6481] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 193.696219][ T6473] CPU: 1 PID: 6473 Comm: syz.1.339 Not tainted syzkaller #0 [ 193.703525][ T6473] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 193.713680][ T6473] Call Trace: [ 193.716977][ T6473] [ 193.719918][ T6473] dump_stack_lvl+0x188/0x250 [ 193.724624][ T6473] ? show_regs_print_info+0x20/0x20 [ 193.730025][ T6473] ? load_image+0x400/0x400 [ 193.734735][ T6473] ? __lock_acquire+0x7d10/0x7d10 [ 193.739789][ T6473] should_fail+0x38c/0x4c0 [ 193.744427][ T6473] _copy_from_user+0x2e/0x170 [ 193.749257][ T6473] kstrtouint_from_user+0xd3/0x220 [ 193.754512][ T6473] ? kstrtol_from_user+0x2a0/0x2a0 [ 193.759808][ T6473] proc_fail_nth_write+0x8b/0x200 [ 193.764859][ T6473] ? proc_fail_nth_read+0x220/0x220 [ 193.770077][ T6473] ? common_file_perm+0x171/0x1c0 [ 193.775147][ T6473] ? proc_fail_nth_read+0x220/0x220 [ 193.780459][ T6473] vfs_write+0x30b/0xd60 [ 193.784726][ T6473] ? file_end_write+0x250/0x250 [ 193.789605][ T6473] ? __fget_files+0x40f/0x480 [ 193.794297][ T6473] ? mutex_lock_nested+0x17/0x20 [ 193.799384][ T6473] ? __fdget_pos+0x2bf/0x370 [ 193.803979][ T6473] ? ksys_write+0x71/0x260 [ 193.808402][ T6473] ksys_write+0x152/0x260 [ 193.812732][ T6473] ? __ia32_sys_read+0x80/0x80 [ 193.817581][ T6473] ? lockdep_hardirqs_on+0x94/0x140 [ 193.822992][ T6473] do_syscall_64+0x4c/0xa0 [ 193.827430][ T6473] ? clear_bhb_loop+0x30/0x80 [ 193.832128][ T6473] ? clear_bhb_loop+0x30/0x80 [ 193.836918][ T6473] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 193.842827][ T6473] RIP: 0033:0x7f3baf05d74e [ 193.847258][ T6473] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 193.866906][ T6473] RSP: 002b:00007f3bae318ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 193.875342][ T6473] RAX: ffffffffffffffda RBX: 00007f3bae3196c0 RCX: 00007f3baf05d74e [ 193.883328][ T6473] RDX: 0000000000000001 RSI: 00007f3bae3190b0 RDI: 0000000000000006 [ 193.891320][ T6473] RBP: 00007f3bae3190a0 R08: 0000000000000000 R09: 0000000000000000 [ 193.899431][ T6473] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 193.907707][ T6473] R13: 000000000000000b R14: 00007f3baf240f80 R15: 00007ffeabae9a08 [ 193.915792][ T6473] [ 193.918837][ T6480] CPU: 0 PID: 6480 Comm: syz.3.343 Not tainted syzkaller #0 [ 193.926140][ T6480] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 193.936478][ T6480] Call Trace: [ 193.939860][ T6480] [ 193.942799][ T6480] dump_stack_lvl+0x188/0x250 [ 193.947496][ T6480] ? show_regs_print_info+0x20/0x20 [ 193.952784][ T6480] ? load_image+0x400/0x400 [ 193.957408][ T6480] ? __lock_acquire+0x7d10/0x7d10 [ 193.962484][ T6480] should_fail+0x38c/0x4c0 [ 193.967004][ T6480] _copy_from_user+0x2e/0x170 [ 193.971701][ T6480] kstrtouint_from_user+0xd3/0x220 [ 193.976860][ T6480] ? kstrtol_from_user+0x2a0/0x2a0 [ 193.982027][ T6480] proc_fail_nth_write+0x8b/0x200 [ 193.987063][ T6480] ? proc_fail_nth_read+0x220/0x220 [ 193.992264][ T6480] ? common_file_perm+0x171/0x1c0 [ 193.997377][ T6480] ? proc_fail_nth_read+0x220/0x220 [ 194.002680][ T6480] vfs_write+0x30b/0xd60 [ 194.007124][ T6480] ? file_end_write+0x250/0x250 [ 194.011980][ T6480] ? __fget_files+0x40f/0x480 [ 194.016749][ T6480] ? mutex_lock_nested+0x17/0x20 [ 194.021787][ T6480] ? __fdget_pos+0x2bf/0x370 [ 194.026385][ T6480] ? ksys_write+0x71/0x260 [ 194.030822][ T6480] ksys_write+0x152/0x260 [ 194.035159][ T6480] ? __ia32_sys_read+0x80/0x80 [ 194.039924][ T6480] ? lockdep_hardirqs_on+0x94/0x140 [ 194.045227][ T6480] do_syscall_64+0x4c/0xa0 [ 194.049695][ T6480] ? clear_bhb_loop+0x30/0x80 [ 194.054381][ T6480] ? clear_bhb_loop+0x30/0x80 [ 194.059066][ T6480] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 194.064963][ T6480] RIP: 0033:0x7fbad61c174e [ 194.069395][ T6480] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 194.089145][ T6480] RSP: 002b:00007fbad547cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 194.097660][ T6480] RAX: ffffffffffffffda RBX: 00007fbad547d6c0 RCX: 00007fbad61c174e [ 194.105760][ T6480] RDX: 0000000000000001 RSI: 00007fbad547d0b0 RDI: 0000000000000007 [ 194.113833][ T6480] RBP: 00007fbad547d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 194.121830][ T6480] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 194.130043][ T6480] R13: 000000000000000b R14: 00007fbad63a4f80 R15: 00007ffe2023ce08 [ 194.138055][ T6480] [ 194.141091][ T6481] CPU: 1 PID: 6481 Comm: syz.4.342 Not tainted syzkaller #0 [ 194.148504][ T6481] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 194.158607][ T6481] Call Trace: [ 194.162003][ T6481] [ 194.164936][ T6481] dump_stack_lvl+0x188/0x250 [ 194.169821][ T6481] ? show_regs_print_info+0x20/0x20 [ 194.175019][ T6481] ? load_image+0x400/0x400 [ 194.179526][ T6481] ? __lock_acquire+0x7d10/0x7d10 [ 194.184566][ T6481] should_fail+0x38c/0x4c0 [ 194.189003][ T6481] _copy_from_user+0x2e/0x170 [ 194.193693][ T6481] kstrtouint_from_user+0xd3/0x220 [ 194.198829][ T6481] ? kstrtol_from_user+0x2a0/0x2a0 [ 194.203959][ T6481] proc_fail_nth_write+0x8b/0x200 [ 194.209073][ T6481] ? proc_fail_nth_read+0x220/0x220 [ 194.214277][ T6481] ? common_file_perm+0x171/0x1c0 [ 194.219318][ T6481] ? proc_fail_nth_read+0x220/0x220 [ 194.224535][ T6481] vfs_write+0x30b/0xd60 [ 194.228820][ T6481] ? file_end_write+0x250/0x250 [ 194.234029][ T6481] ? __fget_files+0x40f/0x480 [ 194.238707][ T6481] ? mutex_lock_nested+0x17/0x20 [ 194.243725][ T6481] ? __fdget_pos+0x2bf/0x370 [ 194.248308][ T6481] ? ksys_write+0x71/0x260 [ 194.252722][ T6481] ksys_write+0x152/0x260 [ 194.257062][ T6481] ? __ia32_sys_read+0x80/0x80 [ 194.261946][ T6481] ? lockdep_hardirqs_on+0x94/0x140 [ 194.267164][ T6481] do_syscall_64+0x4c/0xa0 [ 194.271610][ T6481] ? clear_bhb_loop+0x30/0x80 [ 194.276313][ T6481] ? clear_bhb_loop+0x30/0x80 [ 194.281020][ T6481] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 194.286941][ T6481] RIP: 0033:0x7f16d038274e [ 194.291361][ T6481] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 194.310981][ T6481] RSP: 002b:00007f16cf63dff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 194.319405][ T6481] RAX: ffffffffffffffda RBX: 00007f16cf63e6c0 RCX: 00007f16d038274e [ 194.327477][ T6481] RDX: 0000000000000001 RSI: 00007f16cf63e0b0 RDI: 0000000000000007 [ 194.335466][ T6481] RBP: 00007f16cf63e0a0 R08: 0000000000000000 R09: 0000000000000000 [ 194.343445][ T6481] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 194.351420][ T6481] R13: 000000000000000b R14: 00007f16d0565f80 R15: 00007ffc849792c8 [ 194.359408][ T6481] [ 194.373475][ T6477] CPU: 0 PID: 6477 Comm: syz.0.341 Not tainted syzkaller #0 [ 194.380809][ T6477] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 194.390883][ T6477] Call Trace: [ 194.394345][ T6477] [ 194.397270][ T6477] dump_stack_lvl+0x188/0x250 [ 194.401952][ T6477] ? show_regs_print_info+0x20/0x20 [ 194.407235][ T6477] ? load_image+0x400/0x400 [ 194.411819][ T6477] ? __lock_acquire+0x7d10/0x7d10 [ 194.417040][ T6477] should_fail+0x38c/0x4c0 [ 194.421461][ T6477] _copy_from_user+0x2e/0x170 [ 194.426147][ T6477] kstrtouint_from_user+0xd3/0x220 [ 194.431271][ T6477] ? kstrtol_from_user+0x2a0/0x2a0 [ 194.436498][ T6477] proc_fail_nth_write+0x8b/0x200 [ 194.441539][ T6477] ? proc_fail_nth_read+0x220/0x220 [ 194.446740][ T6477] ? common_file_perm+0x171/0x1c0 [ 194.451761][ T6477] ? proc_fail_nth_read+0x220/0x220 [ 194.456954][ T6477] vfs_write+0x30b/0xd60 [ 194.461199][ T6477] ? file_end_write+0x250/0x250 [ 194.466047][ T6477] ? __fget_files+0x40f/0x480 [ 194.470724][ T6477] ? mutex_lock_nested+0x17/0x20 [ 194.475655][ T6477] ? __fdget_pos+0x2bf/0x370 [ 194.480244][ T6477] ? ksys_write+0x71/0x260 [ 194.481219][ T6485] FAULT_INJECTION: forcing a failure. [ 194.481219][ T6485] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 194.484749][ T6477] ksys_write+0x152/0x260 [ 194.484775][ T6477] ? __ia32_sys_read+0x80/0x80 [ 194.484793][ T6477] ? lockdep_hardirqs_on+0x94/0x140 [ 194.484815][ T6477] do_syscall_64+0x4c/0xa0 [ 194.484829][ T6477] ? clear_bhb_loop+0x30/0x80 [ 194.484847][ T6477] ? clear_bhb_loop+0x30/0x80 [ 194.484863][ T6477] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 194.484880][ T6477] RIP: 0033:0x7f864b3a574e [ 194.484900][ T6477] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 194.484914][ T6477] RSP: 002b:00007f864a660ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 194.565035][ T6477] RAX: ffffffffffffffda RBX: 00007f864a6616c0 RCX: 00007f864b3a574e [ 194.573031][ T6477] RDX: 0000000000000001 RSI: 00007f864a6610b0 RDI: 0000000000000007 [ 194.581389][ T6477] RBP: 00007f864a6610a0 R08: 0000000000000000 R09: 0000000000000000 [ 194.589393][ T6477] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 194.597385][ T6477] R13: 000000000000000b R14: 00007f864b588f80 R15: 00007ffeb91066c8 [ 194.605767][ T6477] [ 194.608807][ T6472] CPU: 1 PID: 6472 Comm: syz.2.340 Not tainted syzkaller #0 [ 194.616310][ T6472] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 194.626660][ T6472] Call Trace: [ 194.629952][ T6472] [ 194.632876][ T6472] dump_stack_lvl+0x188/0x250 [ 194.637553][ T6472] ? show_regs_print_info+0x20/0x20 [ 194.642749][ T6472] ? load_image+0x400/0x400 [ 194.647242][ T6472] ? __lock_acquire+0x7d10/0x7d10 [ 194.652259][ T6472] should_fail+0x38c/0x4c0 [ 194.656763][ T6472] _copy_from_user+0x2e/0x170 [ 194.661451][ T6472] kstrtouint_from_user+0xd3/0x220 [ 194.666557][ T6472] ? kstrtol_from_user+0x2a0/0x2a0 [ 194.671776][ T6472] proc_fail_nth_write+0x8b/0x200 [ 194.676788][ T6472] ? proc_fail_nth_read+0x220/0x220 [ 194.682146][ T6472] ? common_file_perm+0x171/0x1c0 [ 194.687266][ T6472] ? proc_fail_nth_read+0x220/0x220 [ 194.692454][ T6472] vfs_write+0x30b/0xd60 [ 194.696690][ T6472] ? file_end_write+0x250/0x250 [ 194.701539][ T6472] ? __fget_files+0x40f/0x480 [ 194.706220][ T6472] ? mutex_lock_nested+0x17/0x20 [ 194.711153][ T6472] ? __fdget_pos+0x2bf/0x370 [ 194.715741][ T6472] ? ksys_write+0x71/0x260 [ 194.720182][ T6472] ksys_write+0x152/0x260 [ 194.724540][ T6472] ? __ia32_sys_read+0x80/0x80 [ 194.729299][ T6472] ? lockdep_hardirqs_on+0x94/0x140 [ 194.734578][ T6472] do_syscall_64+0x4c/0xa0 [ 194.739070][ T6472] ? clear_bhb_loop+0x30/0x80 [ 194.743954][ T6472] ? clear_bhb_loop+0x30/0x80 [ 194.748623][ T6472] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 194.754515][ T6472] RIP: 0033:0x7fbdb3b2c74e [ 194.758941][ T6472] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 194.778639][ T6472] RSP: 002b:00007fbdb2de7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 194.787045][ T6472] RAX: ffffffffffffffda RBX: 00007fbdb2de86c0 RCX: 00007fbdb3b2c74e [ 194.795381][ T6472] RDX: 0000000000000001 RSI: 00007fbdb2de80b0 RDI: 0000000000000007 [ 194.803338][ T6472] RBP: 00007fbdb2de80a0 R08: 0000000000000000 R09: 0000000000000000 [ 194.811294][ T6472] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 194.819253][ T6472] R13: 000000000000000b R14: 00007fbdb3d0ff80 R15: 00007ffc8d3c7768 [ 194.827234][ T6472] [ 194.837139][ T6485] CPU: 0 PID: 6485 Comm: syz.1.344 Not tainted syzkaller #0 [ 194.844718][ T6485] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 194.854956][ T6485] Call Trace: [ 194.858232][ T6485] [ 194.861178][ T6485] dump_stack_lvl+0x188/0x250 [ 194.865878][ T6485] ? show_regs_print_info+0x20/0x20 [ 194.871197][ T6485] ? load_image+0x400/0x400 [ 194.875781][ T6485] ? __lock_acquire+0x7d10/0x7d10 [ 194.880802][ T6485] should_fail+0x38c/0x4c0 [ 194.885305][ T6485] _copy_from_user+0x2e/0x170 [ 194.889972][ T6485] kstrtouint_from_user+0xd3/0x220 [ 194.895072][ T6485] ? kstrtol_from_user+0x2a0/0x2a0 [ 194.900190][ T6485] proc_fail_nth_write+0x8b/0x200 [ 194.905291][ T6485] ? proc_fail_nth_read+0x220/0x220 [ 194.910488][ T6485] ? common_file_perm+0x171/0x1c0 [ 194.915532][ T6485] ? proc_fail_nth_read+0x220/0x220 [ 194.920723][ T6485] vfs_write+0x30b/0xd60 [ 194.924965][ T6485] ? file_end_write+0x250/0x250 [ 194.929892][ T6485] ? __fget_files+0x40f/0x480 [ 194.934561][ T6485] ? mutex_lock_nested+0x17/0x20 [ 194.939493][ T6485] ? __fdget_pos+0x2bf/0x370 [ 194.944067][ T6485] ? ksys_write+0x71/0x260 [ 194.948472][ T6485] ksys_write+0x152/0x260 [ 194.952789][ T6485] ? __ia32_sys_read+0x80/0x80 [ 194.957538][ T6485] ? lockdep_hardirqs_on+0x94/0x140 [ 194.962725][ T6485] do_syscall_64+0x4c/0xa0 [ 194.967129][ T6485] ? clear_bhb_loop+0x30/0x80 [ 194.971794][ T6485] ? clear_bhb_loop+0x30/0x80 [ 194.976514][ T6485] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 194.982398][ T6485] RIP: 0033:0x7f3baf05d74e [ 194.986824][ T6485] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 195.006430][ T6485] RSP: 002b:00007f3bae2d6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 195.014857][ T6485] RAX: ffffffffffffffda RBX: 00007f3bae2d76c0 RCX: 00007f3baf05d74e [ 195.022814][ T6485] RDX: 0000000000000001 RSI: 00007f3bae2d70b0 RDI: 0000000000000005 [ 195.030783][ T6485] RBP: 00007f3bae2d70a0 R08: 0000000000000000 R09: 0000000000000000 [ 195.038759][ T6485] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 195.046829][ T6485] R13: 000000000000006e R14: 00007f3baf241130 R15: 00007ffeabae9a08 [ 195.054841][ T6485] [ 195.062840][ T1421] ieee802154 phy0 wpan0: encryption failed: -22 [ 195.069288][ T1421] ieee802154 phy1 wpan1: encryption failed: -22 2026/04/25 10:13:33 executed programs: 341 [ 195.093612][ T6487] FAULT_INJECTION: forcing a failure. [ 195.093612][ T6487] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 195.108413][ T6490] FAULT_INJECTION: forcing a failure. [ 195.108413][ T6490] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 195.124420][ T6490] CPU: 1 PID: 6490 Comm: syz.3.346 Not tainted syzkaller #0 [ 195.132190][ T6490] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 195.142618][ T6490] Call Trace: [ 195.146153][ T6490] [ 195.149095][ T6490] dump_stack_lvl+0x188/0x250 [ 195.153951][ T6490] ? show_regs_print_info+0x20/0x20 [ 195.159175][ T6490] ? load_image+0x400/0x400 [ 195.163851][ T6490] ? __lock_acquire+0x7d10/0x7d10 [ 195.168875][ T6490] should_fail+0x38c/0x4c0 [ 195.173373][ T6490] _copy_from_user+0x2e/0x170 [ 195.178137][ T6490] kstrtouint_from_user+0xd3/0x220 [ 195.183248][ T6490] ? kstrtol_from_user+0x2a0/0x2a0 [ 195.188617][ T6490] proc_fail_nth_write+0x8b/0x200 [ 195.193811][ T6490] ? proc_fail_nth_read+0x220/0x220 [ 195.199010][ T6490] ? common_file_perm+0x171/0x1c0 [ 195.204038][ T6490] ? proc_fail_nth_read+0x220/0x220 [ 195.209228][ T6490] vfs_write+0x30b/0xd60 [ 195.213529][ T6490] ? file_end_write+0x250/0x250 [ 195.218373][ T6490] ? __fget_files+0x40f/0x480 [ 195.223065][ T6490] ? mutex_lock_nested+0x17/0x20 [ 195.228165][ T6490] ? __fdget_pos+0x2bf/0x370 [ 195.232736][ T6490] ? ksys_write+0x71/0x260 [ 195.237153][ T6490] ksys_write+0x152/0x260 [ 195.241473][ T6490] ? __ia32_sys_read+0x80/0x80 [ 195.246316][ T6490] ? lockdep_hardirqs_on+0x94/0x140 [ 195.251623][ T6490] do_syscall_64+0x4c/0xa0 [ 195.256025][ T6490] ? clear_bhb_loop+0x30/0x80 [ 195.260691][ T6490] ? clear_bhb_loop+0x30/0x80 [ 195.265353][ T6490] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 195.271237][ T6490] RIP: 0033:0x7fbad61c174e [ 195.275644][ T6490] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 195.295427][ T6490] RSP: 002b:00007fbad547cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 195.303829][ T6490] RAX: ffffffffffffffda RBX: 00007fbad547d6c0 RCX: 00007fbad61c174e [ 195.311793][ T6490] RDX: 0000000000000001 RSI: 00007fbad547d0b0 RDI: 0000000000000007 [ 195.319753][ T6490] RBP: 00007fbad547d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 195.327712][ T6490] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 195.335669][ T6490] R13: 000000000000000b R14: 00007fbad63a4f80 R15: 00007ffe2023ce08 [ 195.343639][ T6490] [ 195.354080][ T6487] CPU: 1 PID: 6487 Comm: syz.4.345 Not tainted syzkaller #0 [ 195.361476][ T6487] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 195.371633][ T6487] Call Trace: [ 195.374909][ T6487] [ 195.377830][ T6487] dump_stack_lvl+0x188/0x250 [ 195.382502][ T6487] ? show_regs_print_info+0x20/0x20 [ 195.387686][ T6487] ? load_image+0x400/0x400 [ 195.392182][ T6487] ? __lock_acquire+0x7d10/0x7d10 [ 195.397199][ T6487] should_fail+0x38c/0x4c0 [ 195.401744][ T6487] _copy_from_user+0x2e/0x170 [ 195.406444][ T6487] kstrtouint_from_user+0xd3/0x220 [ 195.411560][ T6487] ? kstrtol_from_user+0x2a0/0x2a0 [ 195.416674][ T6487] proc_fail_nth_write+0x8b/0x200 [ 195.421689][ T6487] ? proc_fail_nth_read+0x220/0x220 [ 195.426871][ T6487] ? common_file_perm+0x171/0x1c0 [ 195.431974][ T6487] ? proc_fail_nth_read+0x220/0x220 [ 195.437163][ T6487] vfs_write+0x30b/0xd60 [ 195.441401][ T6487] ? file_end_write+0x250/0x250 [ 195.446242][ T6487] ? __fget_files+0x40f/0x480 [ 195.450911][ T6487] ? mutex_lock_nested+0x17/0x20 [ 195.455841][ T6487] ? __fdget_pos+0x2bf/0x370 [ 195.460536][ T6487] ? ksys_write+0x71/0x260 [ 195.465133][ T6487] ksys_write+0x152/0x260 [ 195.469663][ T6487] ? __ia32_sys_read+0x80/0x80 [ 195.474755][ T6487] ? lockdep_hardirqs_on+0x94/0x140 [ 195.480244][ T6487] do_syscall_64+0x4c/0xa0 [ 195.484669][ T6487] ? clear_bhb_loop+0x30/0x80 [ 195.489512][ T6487] ? clear_bhb_loop+0x30/0x80 [ 195.494202][ T6487] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 195.500083][ T6487] RIP: 0033:0x7f16d038274e [ 195.504506][ T6487] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 195.524290][ T6487] RSP: 002b:00007f16cf63dff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 195.532808][ T6487] RAX: ffffffffffffffda RBX: 00007f16cf63e6c0 RCX: 00007f16d038274e [ 195.540881][ T6487] RDX: 0000000000000001 RSI: 00007f16cf63e0b0 RDI: 0000000000000007 [ 195.548865][ T6487] RBP: 00007f16cf63e0a0 R08: 0000000000000000 R09: 0000000000000000 [ 195.556845][ T6487] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 195.564985][ T6487] R13: 000000000000000b R14: 00007f16d0565f80 R15: 00007ffc849792c8 [ 195.572965][ T6487] [ 195.581896][ T6491] FAULT_INJECTION: forcing a failure. [ 195.581896][ T6491] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 195.603751][ T6495] FAULT_INJECTION: forcing a failure. [ 195.603751][ T6495] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 195.625630][ T6498] FAULT_INJECTION: forcing a failure. [ 195.625630][ T6498] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 195.637784][ T6491] CPU: 1 PID: 6491 Comm: syz.0.347 Not tainted syzkaller #0 [ 195.646026][ T6491] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 195.656365][ T6491] Call Trace: [ 195.659651][ T6491] [ 195.662572][ T6491] dump_stack_lvl+0x188/0x250 [ 195.667348][ T6491] ? show_regs_print_info+0x20/0x20 [ 195.672712][ T6491] ? load_image+0x400/0x400 [ 195.677225][ T6491] ? __lock_acquire+0x7d10/0x7d10 [ 195.682425][ T6491] should_fail+0x38c/0x4c0 [ 195.686838][ T6491] _copy_from_user+0x2e/0x170 [ 195.691535][ T6491] kstrtouint_from_user+0xd3/0x220 [ 195.696637][ T6491] ? kstrtol_from_user+0x2a0/0x2a0 [ 195.701764][ T6491] proc_fail_nth_write+0x8b/0x200 [ 195.706870][ T6491] ? proc_fail_nth_read+0x220/0x220 [ 195.712060][ T6491] ? common_file_perm+0x171/0x1c0 [ 195.717076][ T6491] ? proc_fail_nth_read+0x220/0x220 [ 195.722286][ T6491] vfs_write+0x30b/0xd60 [ 195.726681][ T6491] ? file_end_write+0x250/0x250 [ 195.731597][ T6491] ? __fget_files+0x40f/0x480 [ 195.736291][ T6491] ? mutex_lock_nested+0x17/0x20 [ 195.741263][ T6491] ? __fdget_pos+0x2bf/0x370 [ 195.746001][ T6491] ? ksys_write+0x71/0x260 [ 195.750465][ T6491] ksys_write+0x152/0x260 [ 195.754797][ T6491] ? __ia32_sys_read+0x80/0x80 [ 195.759749][ T6491] ? lockdep_hardirqs_on+0x94/0x140 [ 195.764976][ T6491] do_syscall_64+0x4c/0xa0 [ 195.769402][ T6491] ? clear_bhb_loop+0x30/0x80 [ 195.774076][ T6491] ? clear_bhb_loop+0x30/0x80 [ 195.778862][ T6491] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 195.784870][ T6491] RIP: 0033:0x7f864b3a574e [ 195.789305][ T6491] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 195.809083][ T6491] RSP: 002b:00007f864a660ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 195.817775][ T6491] RAX: ffffffffffffffda RBX: 00007f864a6616c0 RCX: 00007f864b3a574e [ 195.825927][ T6491] RDX: 0000000000000001 RSI: 00007f864a6610b0 RDI: 0000000000000006 [ 195.833884][ T6491] RBP: 00007f864a6610a0 R08: 0000000000000000 R09: 0000000000000000 [ 195.841872][ T6491] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 195.849850][ T6491] R13: 000000000000000b R14: 00007f864b588f80 R15: 00007ffeb91066c8 [ 195.857936][ T6491] [ 195.863130][ T6495] CPU: 0 PID: 6495 Comm: syz.2.348 Not tainted syzkaller #0 [ 195.870494][ T6495] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 195.880565][ T6495] Call Trace: [ 195.883862][ T6495] [ 195.886810][ T6495] dump_stack_lvl+0x188/0x250 [ 195.891514][ T6495] ? show_regs_print_info+0x20/0x20 [ 195.896832][ T6495] ? load_image+0x400/0x400 [ 195.901454][ T6495] ? __lock_acquire+0x7d10/0x7d10 [ 195.906497][ T6495] should_fail+0x38c/0x4c0 [ 195.911144][ T6495] _copy_from_user+0x2e/0x170 [ 195.915901][ T6495] kstrtouint_from_user+0xd3/0x220 [ 195.921148][ T6495] ? kstrtol_from_user+0x2a0/0x2a0 [ 195.926313][ T6495] proc_fail_nth_write+0x8b/0x200 [ 195.931363][ T6495] ? proc_fail_nth_read+0x220/0x220 [ 195.936564][ T6495] ? common_file_perm+0x171/0x1c0 [ 195.941719][ T6495] ? proc_fail_nth_read+0x220/0x220 [ 195.947116][ T6495] vfs_write+0x30b/0xd60 [ 195.951368][ T6495] ? file_end_write+0x250/0x250 [ 195.956326][ T6495] ? __fget_files+0x40f/0x480 [ 195.961009][ T6495] ? mutex_lock_nested+0x17/0x20 [ 195.965949][ T6495] ? __fdget_pos+0x2bf/0x370 [ 195.970619][ T6495] ? ksys_write+0x71/0x260 [ 195.975031][ T6495] ksys_write+0x152/0x260 [ 195.979350][ T6495] ? __ia32_sys_read+0x80/0x80 [ 195.984111][ T6495] ? lockdep_hardirqs_on+0x94/0x140 [ 195.989390][ T6495] do_syscall_64+0x4c/0xa0 [ 195.993819][ T6495] ? clear_bhb_loop+0x30/0x80 [ 195.998563][ T6495] ? clear_bhb_loop+0x30/0x80 [ 196.003231][ T6495] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 196.009245][ T6495] RIP: 0033:0x7fbdb3b2c74e [ 196.013649][ T6495] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 196.033341][ T6495] RSP: 002b:00007fbdb2de7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 196.042380][ T6495] RAX: ffffffffffffffda RBX: 00007fbdb2de86c0 RCX: 00007fbdb3b2c74e [ 196.050360][ T6495] RDX: 0000000000000001 RSI: 00007fbdb2de80b0 RDI: 0000000000000007 [ 196.058322][ T6495] RBP: 00007fbdb2de80a0 R08: 0000000000000000 R09: 0000000000000000 [ 196.066280][ T6495] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 196.074420][ T6495] R13: 000000000000000b R14: 00007fbdb3d0ff80 R15: 00007ffc8d3c7768 [ 196.082481][ T6495] [ 196.110098][ T6500] FAULT_INJECTION: forcing a failure. [ 196.110098][ T6500] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 196.124026][ T6498] CPU: 0 PID: 6498 Comm: syz.1.349 Not tainted syzkaller #0 [ 196.127865][ T6501] FAULT_INJECTION: forcing a failure. [ 196.127865][ T6501] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 196.131426][ T6498] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 196.131440][ T6498] Call Trace: [ 196.131463][ T6498] [ 196.131472][ T6498] dump_stack_lvl+0x188/0x250 [ 196.166946][ T6498] ? show_regs_print_info+0x20/0x20 [ 196.172171][ T6498] ? load_image+0x400/0x400 [ 196.176722][ T6498] ? __lock_acquire+0x7d10/0x7d10 [ 196.182149][ T6498] should_fail+0x38c/0x4c0 [ 196.186829][ T6498] _copy_from_user+0x2e/0x170 [ 196.191552][ T6498] kstrtouint_from_user+0xd3/0x220 [ 196.196691][ T6498] ? kstrtol_from_user+0x2a0/0x2a0 [ 196.201834][ T6498] proc_fail_nth_write+0x8b/0x200 [ 196.207123][ T6498] ? proc_fail_nth_read+0x220/0x220 [ 196.212403][ T6498] ? common_file_perm+0x171/0x1c0 [ 196.217420][ T6498] ? proc_fail_nth_read+0x220/0x220 [ 196.222611][ T6498] vfs_write+0x30b/0xd60 [ 196.226855][ T6498] ? file_end_write+0x250/0x250 [ 196.231879][ T6498] ? __fget_files+0x40f/0x480 [ 196.236549][ T6498] ? mutex_lock_nested+0x17/0x20 [ 196.241474][ T6498] ? __fdget_pos+0x2bf/0x370 [ 196.246046][ T6498] ? ksys_write+0x71/0x260 [ 196.250455][ T6498] ksys_write+0x152/0x260 [ 196.254870][ T6498] ? __ia32_sys_read+0x80/0x80 [ 196.259632][ T6498] ? lockdep_hardirqs_on+0x94/0x140 [ 196.264825][ T6498] do_syscall_64+0x4c/0xa0 [ 196.269260][ T6498] ? clear_bhb_loop+0x30/0x80 [ 196.273930][ T6498] ? clear_bhb_loop+0x30/0x80 [ 196.278796][ T6498] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 196.284688][ T6498] RIP: 0033:0x7f3baf05d74e [ 196.289103][ T6498] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 196.309228][ T6498] RSP: 002b:00007f3bae318ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 196.317764][ T6498] RAX: ffffffffffffffda RBX: 00007f3bae3196c0 RCX: 00007f3baf05d74e [ 196.325767][ T6498] RDX: 0000000000000001 RSI: 00007f3bae3190b0 RDI: 0000000000000007 [ 196.333930][ T6498] RBP: 00007f3bae3190a0 R08: 0000000000000000 R09: 0000000000000000 [ 196.342112][ T6498] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 196.350107][ T6498] R13: 000000000000000b R14: 00007f3baf240f80 R15: 00007ffeabae9a08 [ 196.358278][ T6498] [ 196.377948][ T6501] CPU: 1 PID: 6501 Comm: syz.3.350 Not tainted syzkaller #0 [ 196.385295][ T6501] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 196.395367][ T6501] Call Trace: [ 196.398667][ T6501] [ 196.401652][ T6501] dump_stack_lvl+0x188/0x250 [ 196.406343][ T6501] ? show_regs_print_info+0x20/0x20 [ 196.411568][ T6501] ? load_image+0x400/0x400 [ 196.416084][ T6501] ? __lock_acquire+0x7d10/0x7d10 [ 196.421115][ T6501] should_fail+0x38c/0x4c0 [ 196.425539][ T6501] _copy_from_user+0x2e/0x170 [ 196.430218][ T6501] kstrtouint_from_user+0xd3/0x220 [ 196.435350][ T6501] ? kstrtol_from_user+0x2a0/0x2a0 [ 196.440520][ T6501] proc_fail_nth_write+0x8b/0x200 [ 196.445572][ T6501] ? proc_fail_nth_read+0x220/0x220 [ 196.450812][ T6501] ? common_file_perm+0x171/0x1c0 [ 196.455938][ T6501] ? proc_fail_nth_read+0x220/0x220 [ 196.461136][ T6501] vfs_write+0x30b/0xd60 [ 196.465380][ T6501] ? file_end_write+0x250/0x250 [ 196.470235][ T6501] ? __fget_files+0x40f/0x480 [ 196.474943][ T6501] ? mutex_lock_nested+0x17/0x20 [ 196.479891][ T6501] ? __fdget_pos+0x2bf/0x370 [ 196.484480][ T6501] ? ksys_write+0x71/0x260 [ 196.488905][ T6501] ksys_write+0x152/0x260 [ 196.493237][ T6501] ? __ia32_sys_read+0x80/0x80 [ 196.498040][ T6501] ? lockdep_hardirqs_on+0x94/0x140 [ 196.503258][ T6501] do_syscall_64+0x4c/0xa0 [ 196.507677][ T6501] ? clear_bhb_loop+0x30/0x80 [ 196.512349][ T6501] ? clear_bhb_loop+0x30/0x80 [ 196.517033][ T6501] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 196.522938][ T6501] RIP: 0033:0x7fbad61c174e [ 196.527393][ T6501] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 196.547111][ T6501] RSP: 002b:00007fbad545bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 196.555539][ T6501] RAX: ffffffffffffffda RBX: 00007fbad545c6c0 RCX: 00007fbad61c174e [ 196.563601][ T6501] RDX: 0000000000000001 RSI: 00007fbad545c0b0 RDI: 0000000000000005 [ 196.571844][ T6501] RBP: 00007fbad545c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 196.579929][ T6501] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 196.587929][ T6501] R13: 000000000000006e R14: 00007fbad63a5058 R15: 00007ffe2023ce08 [ 196.595949][ T6501] [ 196.598993][ T6500] CPU: 0 PID: 6500 Comm: syz.4.351 Not tainted syzkaller #0 [ 196.606307][ T6500] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 196.616388][ T6500] Call Trace: [ 196.619693][ T6500] [ 196.622646][ T6500] dump_stack_lvl+0x188/0x250 [ 196.627360][ T6500] ? show_regs_print_info+0x20/0x20 [ 196.633023][ T6500] ? load_image+0x400/0x400 [ 196.637536][ T6500] ? __lock_acquire+0x7d10/0x7d10 [ 196.642558][ T6500] should_fail+0x38c/0x4c0 [ 196.647158][ T6500] _copy_from_user+0x2e/0x170 [ 196.651828][ T6500] kstrtouint_from_user+0xd3/0x220 [ 196.656928][ T6500] ? kstrtol_from_user+0x2a0/0x2a0 [ 196.662040][ T6500] proc_fail_nth_write+0x8b/0x200 [ 196.667057][ T6500] ? proc_fail_nth_read+0x220/0x220 [ 196.672239][ T6500] ? common_file_perm+0x171/0x1c0 [ 196.677252][ T6500] ? proc_fail_nth_read+0x220/0x220 [ 196.682540][ T6500] vfs_write+0x30b/0xd60 [ 196.686778][ T6500] ? file_end_write+0x250/0x250 [ 196.691623][ T6500] ? __fget_files+0x40f/0x480 [ 196.696571][ T6500] ? mutex_lock_nested+0x17/0x20 [ 196.701702][ T6500] ? __fdget_pos+0x2bf/0x370 [ 196.706397][ T6500] ? ksys_write+0x71/0x260 [ 196.710815][ T6500] ksys_write+0x152/0x260 [ 196.715147][ T6500] ? __ia32_sys_read+0x80/0x80 [ 196.720100][ T6500] ? lockdep_hardirqs_on+0x94/0x140 [ 196.725292][ T6500] do_syscall_64+0x4c/0xa0 [ 196.729715][ T6500] ? clear_bhb_loop+0x30/0x80 [ 196.734405][ T6500] ? clear_bhb_loop+0x30/0x80 [ 196.739111][ T6500] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 196.745000][ T6500] RIP: 0033:0x7f16d038274e [ 196.749409][ T6500] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 196.769006][ T6500] RSP: 002b:00007f16cf63dff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 196.777423][ T6500] RAX: ffffffffffffffda RBX: 00007f16cf63e6c0 RCX: 00007f16d038274e [ 196.785640][ T6500] RDX: 0000000000000001 RSI: 00007f16cf63e0b0 RDI: 0000000000000007 [ 196.793677][ T6500] RBP: 00007f16cf63e0a0 R08: 0000000000000000 R09: 0000000000000000 [ 196.801723][ T6500] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 196.809709][ T6500] R13: 000000000000000b R14: 00007f16d0565f80 R15: 00007ffc849792c8 [ 196.817724][ T6500] [ 196.878327][ T6503] FAULT_INJECTION: forcing a failure. [ 196.878327][ T6503] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 196.878963][ T6506] FAULT_INJECTION: forcing a failure. [ 196.878963][ T6506] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 196.911102][ T6510] FAULT_INJECTION: forcing a failure. [ 196.911102][ T6510] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 196.930279][ T6512] FAULT_INJECTION: forcing a failure. [ 196.930279][ T6512] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 196.933268][ T6503] CPU: 0 PID: 6503 Comm: syz.2.352 Not tainted syzkaller #0 [ 196.950651][ T6503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 196.960732][ T6503] Call Trace: [ 196.964024][ T6503] [ 196.966967][ T6503] dump_stack_lvl+0x188/0x250 [ 196.971667][ T6503] ? show_regs_print_info+0x20/0x20 [ 196.976949][ T6503] ? load_image+0x400/0x400 [ 196.981495][ T6503] ? __lock_acquire+0x7d10/0x7d10 [ 196.986537][ T6503] should_fail+0x38c/0x4c0 [ 196.990974][ T6503] _copy_from_user+0x2e/0x170 [ 196.995851][ T6503] kstrtouint_from_user+0xd3/0x220 [ 197.001016][ T6503] ? kstrtol_from_user+0x2a0/0x2a0 [ 197.006202][ T6503] proc_fail_nth_write+0x8b/0x200 [ 197.011242][ T6503] ? proc_fail_nth_read+0x220/0x220 [ 197.016533][ T6503] ? common_file_perm+0x171/0x1c0 [ 197.021584][ T6503] ? proc_fail_nth_read+0x220/0x220 [ 197.026805][ T6503] vfs_write+0x30b/0xd60 [ 197.031114][ T6503] ? file_end_write+0x250/0x250 [ 197.036078][ T6503] ? __fget_files+0x40f/0x480 [ 197.040801][ T6503] ? mutex_lock_nested+0x17/0x20 [ 197.045765][ T6503] ? __fdget_pos+0x2bf/0x370 [ 197.050367][ T6503] ? ksys_write+0x71/0x260 [ 197.054803][ T6503] ksys_write+0x152/0x260 [ 197.059222][ T6503] ? __ia32_sys_read+0x80/0x80 [ 197.063987][ T6503] ? lockdep_hardirqs_on+0x94/0x140 [ 197.069381][ T6503] do_syscall_64+0x4c/0xa0 [ 197.073887][ T6503] ? clear_bhb_loop+0x30/0x80 [ 197.078564][ T6503] ? clear_bhb_loop+0x30/0x80 [ 197.083241][ T6503] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 197.089132][ T6503] RIP: 0033:0x7fbdb3b2c74e [ 197.093579][ T6503] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 197.113330][ T6503] RSP: 002b:00007fbdb2de7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 197.121752][ T6503] RAX: ffffffffffffffda RBX: 00007fbdb2de86c0 RCX: 00007fbdb3b2c74e [ 197.129718][ T6503] RDX: 0000000000000001 RSI: 00007fbdb2de80b0 RDI: 0000000000000006 [ 197.137689][ T6503] RBP: 00007fbdb2de80a0 R08: 0000000000000000 R09: 0000000000000000 [ 197.145674][ T6503] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 197.153681][ T6503] R13: 000000000000000b R14: 00007fbdb3d0ff80 R15: 00007ffc8d3c7768 [ 197.161684][ T6503] [ 197.164908][ T6506] CPU: 1 PID: 6506 Comm: syz.0.353 Not tainted syzkaller #0 [ 197.172222][ T6506] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 197.182475][ T6506] Call Trace: [ 197.185932][ T6506] [ 197.188856][ T6506] dump_stack_lvl+0x188/0x250 [ 197.193538][ T6506] ? show_regs_print_info+0x20/0x20 [ 197.198736][ T6506] ? load_image+0x400/0x400 [ 197.203236][ T6506] ? __lock_acquire+0x7d10/0x7d10 [ 197.208541][ T6506] should_fail+0x38c/0x4c0 [ 197.212966][ T6506] _copy_from_user+0x2e/0x170 [ 197.217634][ T6506] kstrtouint_from_user+0xd3/0x220 [ 197.222732][ T6506] ? kstrtol_from_user+0x2a0/0x2a0 [ 197.227841][ T6506] proc_fail_nth_write+0x8b/0x200 [ 197.232854][ T6506] ? proc_fail_nth_read+0x220/0x220 [ 197.238039][ T6506] ? common_file_perm+0x171/0x1c0 [ 197.243054][ T6506] ? proc_fail_nth_read+0x220/0x220 [ 197.248240][ T6506] vfs_write+0x30b/0xd60 [ 197.252475][ T6506] ? file_end_write+0x250/0x250 [ 197.257400][ T6506] ? __fget_files+0x40f/0x480 [ 197.262073][ T6506] ? mutex_lock_nested+0x17/0x20 [ 197.267087][ T6506] ? __fdget_pos+0x2bf/0x370 [ 197.271750][ T6506] ? ksys_write+0x71/0x260 [ 197.276269][ T6506] ksys_write+0x152/0x260 [ 197.280791][ T6506] ? __ia32_sys_read+0x80/0x80 [ 197.285574][ T6506] ? lockdep_hardirqs_on+0x94/0x140 [ 197.290774][ T6506] do_syscall_64+0x4c/0xa0 [ 197.295179][ T6506] ? clear_bhb_loop+0x30/0x80 [ 197.299844][ T6506] ? clear_bhb_loop+0x30/0x80 [ 197.304503][ T6506] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 197.310576][ T6506] RIP: 0033:0x7f864b3a574e [ 197.314986][ T6506] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 197.334685][ T6506] RSP: 002b:00007f864a63fff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 197.343106][ T6506] RAX: ffffffffffffffda RBX: 00007f864a6406c0 RCX: 00007f864b3a574e [ 197.351069][ T6506] RDX: 0000000000000001 RSI: 00007f864a6400b0 RDI: 0000000000000005 [ 197.359167][ T6506] RBP: 00007f864a6400a0 R08: 0000000000000000 R09: 0000000000000000 [ 197.367157][ T6506] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 197.375758][ T6506] R13: 000000000000006e R14: 00007f864b589058 R15: 00007ffeb91066c8 [ 197.383975][ T6506] [ 197.389730][ T6512] CPU: 0 PID: 6512 Comm: syz.1.356 Not tainted syzkaller #0 [ 197.397155][ T6512] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 197.407326][ T6512] Call Trace: [ 197.410617][ T6512] [ 197.413557][ T6512] dump_stack_lvl+0x188/0x250 [ 197.418340][ T6512] ? show_regs_print_info+0x20/0x20 [ 197.423535][ T6512] ? load_image+0x400/0x400 [ 197.428128][ T6512] ? __lock_acquire+0x7d10/0x7d10 [ 197.433172][ T6512] should_fail+0x38c/0x4c0 [ 197.437653][ T6512] _copy_from_user+0x2e/0x170 [ 197.440816][ T6514] FAULT_INJECTION: forcing a failure. [ 197.440816][ T6514] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 197.442361][ T6512] kstrtouint_from_user+0xd3/0x220 [ 197.442391][ T6512] ? kstrtol_from_user+0x2a0/0x2a0 [ 197.465625][ T6512] proc_fail_nth_write+0x8b/0x200 [ 197.470674][ T6512] ? proc_fail_nth_read+0x220/0x220 [ 197.475884][ T6512] ? common_file_perm+0x171/0x1c0 [ 197.480914][ T6512] ? proc_fail_nth_read+0x220/0x220 [ 197.486116][ T6512] vfs_write+0x30b/0xd60 [ 197.490370][ T6512] ? file_end_write+0x250/0x250 [ 197.495408][ T6512] ? __fget_files+0x40f/0x480 [ 197.500155][ T6512] ? mutex_lock_nested+0x17/0x20 [ 197.505185][ T6512] ? __fdget_pos+0x2bf/0x370 [ 197.509783][ T6512] ? ksys_write+0x71/0x260 [ 197.514201][ T6512] ksys_write+0x152/0x260 [ 197.518548][ T6512] ? __ia32_sys_read+0x80/0x80 [ 197.523317][ T6512] ? lockdep_hardirqs_on+0x94/0x140 [ 197.528589][ T6512] do_syscall_64+0x4c/0xa0 [ 197.533027][ T6512] ? clear_bhb_loop+0x30/0x80 [ 197.537720][ T6512] ? clear_bhb_loop+0x30/0x80 [ 197.542503][ T6512] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 197.548434][ T6512] RIP: 0033:0x7f3baf05d74e [ 197.553041][ T6512] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 197.572647][ T6512] RSP: 002b:00007f3bae318ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 197.581280][ T6512] RAX: ffffffffffffffda RBX: 00007f3bae3196c0 RCX: 00007f3baf05d74e [ 197.589326][ T6512] RDX: 0000000000000001 RSI: 00007f3bae3190b0 RDI: 0000000000000007 [ 197.597349][ T6512] RBP: 00007f3bae3190a0 R08: 0000000000000000 R09: 0000000000000000 [ 197.605492][ T6512] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 197.613581][ T6512] R13: 000000000000000b R14: 00007f3baf240f80 R15: 00007ffeabae9a08 [ 197.621579][ T6512] [ 197.624609][ T6510] CPU: 1 PID: 6510 Comm: syz.3.355 Not tainted syzkaller #0 [ 197.631912][ T6510] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 197.641982][ T6510] Call Trace: [ 197.645285][ T6510] [ 197.648341][ T6510] dump_stack_lvl+0x188/0x250 [ 197.653094][ T6510] ? show_regs_print_info+0x20/0x20 [ 197.658282][ T6510] ? load_image+0x400/0x400 [ 197.662780][ T6510] ? __lock_acquire+0x7d10/0x7d10 [ 197.667809][ T6510] should_fail+0x38c/0x4c0 [ 197.672318][ T6510] _copy_from_user+0x2e/0x170 [ 197.677069][ T6510] kstrtouint_from_user+0xd3/0x220 [ 197.682264][ T6510] ? kstrtol_from_user+0x2a0/0x2a0 [ 197.687379][ T6510] proc_fail_nth_write+0x8b/0x200 [ 197.692415][ T6510] ? proc_fail_nth_read+0x220/0x220 [ 197.697738][ T6510] ? common_file_perm+0x171/0x1c0 [ 197.702874][ T6510] ? proc_fail_nth_read+0x220/0x220 [ 197.708072][ T6510] vfs_write+0x30b/0xd60 [ 197.712322][ T6510] ? file_end_write+0x250/0x250 [ 197.717182][ T6510] ? __fget_files+0x40f/0x480 [ 197.721987][ T6510] ? mutex_lock_nested+0x17/0x20 [ 197.726942][ T6510] ? __fdget_pos+0x2bf/0x370 [ 197.731534][ T6510] ? ksys_write+0x71/0x260 [ 197.735949][ T6510] ksys_write+0x152/0x260 [ 197.740653][ T6510] ? __ia32_sys_read+0x80/0x80 [ 197.745592][ T6510] ? lockdep_hardirqs_on+0x94/0x140 [ 197.750786][ T6510] do_syscall_64+0x4c/0xa0 [ 197.755199][ T6510] ? clear_bhb_loop+0x30/0x80 [ 197.759983][ T6510] ? clear_bhb_loop+0x30/0x80 [ 197.764648][ T6510] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 197.770528][ T6510] RIP: 0033:0x7fbad61c174e [ 197.774967][ T6510] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 197.794740][ T6510] RSP: 002b:00007fbad547cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 197.803245][ T6510] RAX: ffffffffffffffda RBX: 00007fbad547d6c0 RCX: 00007fbad61c174e [ 197.811203][ T6510] RDX: 0000000000000001 RSI: 00007fbad547d0b0 RDI: 0000000000000007 [ 197.819164][ T6510] RBP: 00007fbad547d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 197.827135][ T6510] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 197.835093][ T6510] R13: 000000000000000b R14: 00007fbad63a4f80 R15: 00007ffe2023ce08 [ 197.843065][ T6510] [ 197.889825][ T6516] FAULT_INJECTION: forcing a failure. [ 197.889825][ T6516] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 197.927960][ T6520] FAULT_INJECTION: forcing a failure. [ 197.927960][ T6520] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 197.942070][ T6516] CPU: 1 PID: 6516 Comm: syz.2.358 Not tainted syzkaller #0 [ 197.949461][ T6516] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 197.959715][ T6516] Call Trace: [ 197.963085][ T6516] [ 197.966004][ T6516] dump_stack_lvl+0x188/0x250 [ 197.970681][ T6516] ? show_regs_print_info+0x20/0x20 [ 197.976094][ T6516] ? load_image+0x400/0x400 [ 197.980710][ T6516] ? __lock_acquire+0x7d10/0x7d10 [ 197.985885][ T6516] should_fail+0x38c/0x4c0 [ 197.990311][ T6516] _copy_from_user+0x2e/0x170 [ 197.995324][ T6516] kstrtouint_from_user+0xd3/0x220 [ 198.000589][ T6516] ? kstrtol_from_user+0x2a0/0x2a0 [ 198.005718][ T6516] proc_fail_nth_write+0x8b/0x200 [ 198.010773][ T6516] ? proc_fail_nth_read+0x220/0x220 [ 198.015958][ T6516] ? common_file_perm+0x171/0x1c0 [ 198.020975][ T6516] ? proc_fail_nth_read+0x220/0x220 [ 198.026167][ T6516] vfs_write+0x30b/0xd60 [ 198.030405][ T6516] ? file_end_write+0x250/0x250 [ 198.035336][ T6516] ? __fget_files+0x40f/0x480 [ 198.040006][ T6516] ? mutex_lock_nested+0x17/0x20 [ 198.045009][ T6516] ? __fdget_pos+0x2bf/0x370 [ 198.049584][ T6516] ? ksys_write+0x71/0x260 [ 198.053988][ T6516] ksys_write+0x152/0x260 [ 198.058310][ T6516] ? __ia32_sys_read+0x80/0x80 [ 198.063072][ T6516] ? lockdep_hardirqs_on+0x94/0x140 [ 198.068269][ T6516] do_syscall_64+0x4c/0xa0 [ 198.072672][ T6516] ? clear_bhb_loop+0x30/0x80 [ 198.077334][ T6516] ? clear_bhb_loop+0x30/0x80 [ 198.082011][ T6516] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 198.087927][ T6516] RIP: 0033:0x7fbdb3b2c74e [ 198.092356][ T6516] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 198.112044][ T6516] RSP: 002b:00007fbdb2de7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 198.120469][ T6516] RAX: ffffffffffffffda RBX: 00007fbdb2de86c0 RCX: 00007fbdb3b2c74e [ 198.128431][ T6516] RDX: 0000000000000001 RSI: 00007fbdb2de80b0 RDI: 0000000000000007 [ 198.136596][ T6516] RBP: 00007fbdb2de80a0 R08: 0000000000000000 R09: 0000000000000000 [ 198.144644][ T6516] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 198.152606][ T6516] R13: 000000000000000b R14: 00007fbdb3d0ff80 R15: 00007ffc8d3c7768 [ 198.160670][ T6516] [ 198.164366][ T6520] CPU: 0 PID: 6520 Comm: syz.0.359 Not tainted syzkaller #0 [ 198.171675][ T6520] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 198.181851][ T6520] Call Trace: [ 198.185133][ T6520] [ 198.188053][ T6520] dump_stack_lvl+0x188/0x250 [ 198.192729][ T6520] ? show_regs_print_info+0x20/0x20 [ 198.197998][ T6520] ? load_image+0x400/0x400 [ 198.202486][ T6520] ? __lock_acquire+0x7d10/0x7d10 [ 198.207536][ T6520] should_fail+0x38c/0x4c0 [ 198.211952][ T6520] _copy_from_user+0x2e/0x170 [ 198.216621][ T6520] kstrtouint_from_user+0xd3/0x220 [ 198.221723][ T6520] ? kstrtol_from_user+0x2a0/0x2a0 [ 198.226914][ T6520] proc_fail_nth_write+0x8b/0x200 [ 198.231930][ T6520] ? proc_fail_nth_read+0x220/0x220 [ 198.237128][ T6520] ? common_file_perm+0x171/0x1c0 [ 198.242146][ T6520] ? proc_fail_nth_read+0x220/0x220 [ 198.247343][ T6520] vfs_write+0x30b/0xd60 [ 198.251588][ T6520] ? file_end_write+0x250/0x250 [ 198.256512][ T6520] ? __fget_files+0x40f/0x480 [ 198.261181][ T6520] ? mutex_lock_nested+0x17/0x20 [ 198.266190][ T6520] ? __fdget_pos+0x2bf/0x370 [ 198.271026][ T6520] ? ksys_write+0x71/0x260 [ 198.275431][ T6520] ksys_write+0x152/0x260 [ 198.279747][ T6520] ? __ia32_sys_read+0x80/0x80 [ 198.284842][ T6520] ? lockdep_hardirqs_on+0x94/0x140 [ 198.290029][ T6520] do_syscall_64+0x4c/0xa0 [ 198.294430][ T6520] ? clear_bhb_loop+0x30/0x80 [ 198.299100][ T6520] ? clear_bhb_loop+0x30/0x80 [ 198.303848][ T6520] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 198.310515][ T6520] RIP: 0033:0x7f864b3a574e [ 198.314959][ T6520] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 198.334747][ T6520] RSP: 002b:00007f864a660ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 198.343495][ T6520] RAX: ffffffffffffffda RBX: 00007f864a6616c0 RCX: 00007f864b3a574e [ 198.351709][ T6520] RDX: 0000000000000001 RSI: 00007f864a6610b0 RDI: 0000000000000007 [ 198.359804][ T6520] RBP: 00007f864a6610a0 R08: 0000000000000000 R09: 0000000000000000 [ 198.367791][ T6520] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 198.375792][ T6520] R13: 000000000000000b R14: 00007f864b588f80 R15: 00007ffeb91066c8 [ 198.383883][ T6520] [ 198.405746][ T6514] CPU: 1 PID: 6514 Comm: syz.4.354 Not tainted syzkaller #0 [ 198.413091][ T6514] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 198.423266][ T6514] Call Trace: [ 198.426560][ T6514] [ 198.429597][ T6514] dump_stack_lvl+0x188/0x250 [ 198.434298][ T6514] ? show_regs_print_info+0x20/0x20 [ 198.439701][ T6514] ? load_image+0x400/0x400 [ 198.444220][ T6514] ? __lock_acquire+0x7d10/0x7d10 [ 198.449255][ T6514] should_fail+0x38c/0x4c0 [ 198.453677][ T6514] _copy_from_user+0x2e/0x170 [ 198.458529][ T6514] kstrtouint_from_user+0xd3/0x220 [ 198.463751][ T6514] ? kstrtol_from_user+0x2a0/0x2a0 [ 198.468862][ T6514] proc_fail_nth_write+0x8b/0x200 [ 198.473989][ T6514] ? proc_fail_nth_read+0x220/0x220 [ 198.479174][ T6514] ? common_file_perm+0x171/0x1c0 [ 198.484276][ T6514] ? proc_fail_nth_read+0x220/0x220 [ 198.489549][ T6514] vfs_write+0x30b/0xd60 [ 198.493782][ T6514] ? file_end_write+0x250/0x250 [ 198.498718][ T6514] ? __fget_files+0x40f/0x480 [ 198.503389][ T6514] ? mutex_lock_nested+0x17/0x20 [ 198.508316][ T6514] ? __fdget_pos+0x2bf/0x370 [ 198.512888][ T6514] ? ksys_write+0x71/0x260 [ 198.517476][ T6514] ksys_write+0x152/0x260 [ 198.521895][ T6514] ? __ia32_sys_read+0x80/0x80 [ 198.526648][ T6514] ? lockdep_hardirqs_on+0x94/0x140 [ 198.531843][ T6514] do_syscall_64+0x4c/0xa0 [ 198.536342][ T6514] ? clear_bhb_loop+0x30/0x80 [ 198.541189][ T6514] ? clear_bhb_loop+0x30/0x80 [ 198.545859][ T6514] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 198.551742][ T6514] RIP: 0033:0x7f16d038274e [ 198.556153][ T6514] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 198.577192][ T6514] RSP: 002b:00007f16cf61cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 198.585601][ T6514] RAX: ffffffffffffffda RBX: 00007f16cf61d6c0 RCX: 00007f16d038274e [ 198.593647][ T6514] RDX: 0000000000000001 RSI: 00007f16cf61d0b0 RDI: 0000000000000005 [ 198.601912][ T6514] RBP: 00007f16cf61d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 198.609891][ T6514] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 198.617861][ T6514] R13: 000000000000006e R14: 00007f16d0566058 R15: 00007ffc849792c8 [ 198.625848][ T6514] [ 198.636207][ T6523] FAULT_INJECTION: forcing a failure. [ 198.636207][ T6523] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 198.651287][ T6523] CPU: 1 PID: 6523 Comm: syz.3.360 Not tainted syzkaller #0 [ 198.658690][ T6523] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 198.668851][ T6523] Call Trace: [ 198.672192][ T6523] [ 198.675129][ T6523] dump_stack_lvl+0x188/0x250 [ 198.679994][ T6523] ? show_regs_print_info+0x20/0x20 [ 198.685267][ T6523] ? load_image+0x400/0x400 [ 198.689854][ T6523] ? __lock_acquire+0x7d10/0x7d10 [ 198.694894][ T6523] should_fail+0x38c/0x4c0 [ 198.699350][ T6523] _copy_from_user+0x2e/0x170 [ 198.704044][ T6523] kstrtouint_from_user+0xd3/0x220 [ 198.709291][ T6523] ? kstrtol_from_user+0x2a0/0x2a0 [ 198.714414][ T6523] proc_fail_nth_write+0x8b/0x200 [ 198.719435][ T6523] ? proc_fail_nth_read+0x220/0x220 [ 198.724640][ T6523] ? common_file_perm+0x171/0x1c0 [ 198.729910][ T6523] ? proc_fail_nth_read+0x220/0x220 [ 198.735137][ T6523] vfs_write+0x30b/0xd60 [ 198.739387][ T6523] ? file_end_write+0x250/0x250 [ 198.744414][ T6523] ? __fget_files+0x40f/0x480 [ 198.749086][ T6523] ? mutex_lock_nested+0x17/0x20 [ 198.754012][ T6523] ? __fdget_pos+0x2bf/0x370 [ 198.758635][ T6523] ? ksys_write+0x71/0x260 [ 198.763057][ T6523] ksys_write+0x152/0x260 [ 198.767374][ T6523] ? __ia32_sys_read+0x80/0x80 [ 198.772558][ T6523] ? lockdep_hardirqs_on+0x94/0x140 [ 198.777747][ T6523] do_syscall_64+0x4c/0xa0 [ 198.782149][ T6523] ? clear_bhb_loop+0x30/0x80 [ 198.786912][ T6523] ? clear_bhb_loop+0x30/0x80 [ 198.791580][ T6523] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 198.797459][ T6523] RIP: 0033:0x7fbad61c174e [ 198.801877][ T6523] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 198.821607][ T6523] RSP: 002b:00007fbad545bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 198.830013][ T6523] RAX: ffffffffffffffda RBX: 00007fbad545c6c0 RCX: 00007fbad61c174e [ 198.838072][ T6523] RDX: 0000000000000001 RSI: 00007fbad545c0b0 RDI: 0000000000000005 [ 198.846028][ T6523] RBP: 00007fbad545c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 198.854072][ T6523] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 198.862203][ T6523] R13: 000000000000006e R14: 00007fbad63a5058 R15: 00007ffe2023ce08 [ 198.870339][ T6523] [ 198.903446][ T6519] FAULT_INJECTION: forcing a failure. [ 198.903446][ T6519] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 198.920688][ T6527] FAULT_INJECTION: forcing a failure. [ 198.920688][ T6527] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 198.938165][ T6527] CPU: 1 PID: 6527 Comm: syz.0.362 Not tainted syzkaller #0 [ 198.945866][ T6527] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 198.955946][ T6527] Call Trace: [ 198.959243][ T6527] [ 198.962181][ T6527] dump_stack_lvl+0x188/0x250 [ 198.966878][ T6527] ? show_regs_print_info+0x20/0x20 [ 198.972098][ T6527] ? load_image+0x400/0x400 [ 198.976630][ T6527] ? __lock_acquire+0x7d10/0x7d10 [ 198.981825][ T6527] should_fail+0x38c/0x4c0 [ 198.986278][ T6527] _copy_from_user+0x2e/0x170 [ 198.991209][ T6527] kstrtouint_from_user+0xd3/0x220 [ 198.996353][ T6527] ? kstrtol_from_user+0x2a0/0x2a0 [ 199.001591][ T6527] proc_fail_nth_write+0x8b/0x200 [ 199.006731][ T6527] ? proc_fail_nth_read+0x220/0x220 [ 199.011947][ T6527] ? common_file_perm+0x171/0x1c0 [ 199.016993][ T6527] ? proc_fail_nth_read+0x220/0x220 [ 199.022236][ T6527] vfs_write+0x30b/0xd60 [ 199.026481][ T6527] ? file_end_write+0x250/0x250 [ 199.031336][ T6527] ? __fget_files+0x40f/0x480 [ 199.036020][ T6527] ? mutex_lock_nested+0x17/0x20 [ 199.040971][ T6527] ? __fdget_pos+0x2bf/0x370 [ 199.045568][ T6527] ? ksys_write+0x71/0x260 [ 199.049996][ T6527] ksys_write+0x152/0x260 [ 199.054329][ T6527] ? __ia32_sys_read+0x80/0x80 [ 199.059104][ T6527] ? lockdep_hardirqs_on+0x94/0x140 [ 199.064312][ T6527] do_syscall_64+0x4c/0xa0 [ 199.068731][ T6527] ? clear_bhb_loop+0x30/0x80 [ 199.073407][ T6527] ? clear_bhb_loop+0x30/0x80 [ 199.078102][ T6527] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 199.084080][ T6527] RIP: 0033:0x7f864b3a574e [ 199.088503][ T6527] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 199.108202][ T6527] RSP: 002b:00007f864a660ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 199.116630][ T6527] RAX: ffffffffffffffda RBX: 00007f864a6616c0 RCX: 00007f864b3a574e [ 199.124892][ T6527] RDX: 0000000000000001 RSI: 00007f864a6610b0 RDI: 0000000000000007 [ 199.133055][ T6527] RBP: 00007f864a6610a0 R08: 0000000000000000 R09: 0000000000000000 [ 199.141056][ T6527] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 199.149212][ T6527] R13: 000000000000000b R14: 00007f864b588f80 R15: 00007ffeb91066c8 [ 199.157218][ T6527] [ 199.160434][ T6519] CPU: 0 PID: 6519 Comm: syz.1.357 Not tainted syzkaller #0 [ 199.163246][ T6531] FAULT_INJECTION: forcing a failure. [ 199.163246][ T6531] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 199.167822][ T6519] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 199.167837][ T6519] Call Trace: [ 199.194280][ T6519] [ 199.197236][ T6519] dump_stack_lvl+0x188/0x250 [ 199.202068][ T6519] ? show_regs_print_info+0x20/0x20 [ 199.207277][ T6519] ? load_image+0x400/0x400 [ 199.211795][ T6519] ? __lock_acquire+0x7d10/0x7d10 [ 199.216834][ T6519] should_fail+0x38c/0x4c0 [ 199.221263][ T6519] _copy_from_user+0x2e/0x170 [ 199.226067][ T6519] kstrtouint_from_user+0xd3/0x220 [ 199.231374][ T6519] ? kstrtol_from_user+0x2a0/0x2a0 [ 199.236780][ T6519] proc_fail_nth_write+0x8b/0x200 [ 199.241916][ T6519] ? proc_fail_nth_read+0x220/0x220 [ 199.248353][ T6519] ? common_file_perm+0x171/0x1c0 [ 199.253406][ T6519] ? proc_fail_nth_read+0x220/0x220 [ 199.253494][ T6530] FAULT_INJECTION: forcing a failure. [ 199.253494][ T6530] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 199.258803][ T6519] vfs_write+0x30b/0xd60 [ 199.276136][ T6519] ? file_end_write+0x250/0x250 [ 199.281104][ T6519] ? __fget_files+0x40f/0x480 [ 199.285789][ T6519] ? mutex_lock_nested+0x17/0x20 [ 199.290894][ T6519] ? __fdget_pos+0x2bf/0x370 [ 199.295649][ T6519] ? ksys_write+0x71/0x260 [ 199.300097][ T6519] ksys_write+0x152/0x260 [ 199.304420][ T6519] ? __ia32_sys_read+0x80/0x80 [ 199.309181][ T6519] ? lockdep_hardirqs_on+0x94/0x140 [ 199.314614][ T6519] do_syscall_64+0x4c/0xa0 [ 199.319047][ T6519] ? clear_bhb_loop+0x30/0x80 [ 199.323721][ T6519] ? clear_bhb_loop+0x30/0x80 [ 199.328499][ T6519] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 199.334425][ T6519] RIP: 0033:0x7f3baf05d74e [ 199.338949][ T6519] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 199.358701][ T6519] RSP: 002b:00007f3bae318ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 199.367120][ T6519] RAX: ffffffffffffffda RBX: 00007f3bae3196c0 RCX: 00007f3baf05d74e [ 199.375167][ T6519] RDX: 0000000000000001 RSI: 00007f3bae3190b0 RDI: 0000000000000007 [ 199.383162][ T6519] RBP: 00007f3bae3190a0 R08: 0000000000000000 R09: 0000000000000000 [ 199.391172][ T6519] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 199.399228][ T6519] R13: 000000000000000b R14: 00007f3baf240f80 R15: 00007ffeabae9a08 [ 199.407209][ T6519] [ 199.412833][ T6530] CPU: 0 PID: 6530 Comm: syz.4.363 Not tainted syzkaller #0 [ 199.420173][ T6530] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 199.430323][ T6530] Call Trace: [ 199.433594][ T6530] [ 199.436618][ T6530] dump_stack_lvl+0x188/0x250 [ 199.442301][ T6530] ? show_regs_print_info+0x20/0x20 [ 199.447515][ T6530] ? load_image+0x400/0x400 [ 199.452144][ T6530] ? __lock_acquire+0x7d10/0x7d10 [ 199.457366][ T6530] should_fail+0x38c/0x4c0 [ 199.461878][ T6530] _copy_from_user+0x2e/0x170 [ 199.466553][ T6530] kstrtouint_from_user+0xd3/0x220 [ 199.471657][ T6530] ? kstrtol_from_user+0x2a0/0x2a0 [ 199.476774][ T6530] proc_fail_nth_write+0x8b/0x200 [ 199.481793][ T6530] ? proc_fail_nth_read+0x220/0x220 [ 199.486977][ T6530] ? common_file_perm+0x171/0x1c0 [ 199.491995][ T6530] ? proc_fail_nth_read+0x220/0x220 [ 199.497269][ T6530] vfs_write+0x30b/0xd60 [ 199.501602][ T6530] ? file_end_write+0x250/0x250 [ 199.506442][ T6530] ? __fget_files+0x40f/0x480 [ 199.511108][ T6530] ? mutex_lock_nested+0x17/0x20 [ 199.516030][ T6530] ? __fdget_pos+0x2bf/0x370 [ 199.520605][ T6530] ? ksys_write+0x71/0x260 [ 199.525009][ T6530] ksys_write+0x152/0x260 [ 199.529511][ T6530] ? __ia32_sys_read+0x80/0x80 [ 199.534280][ T6530] ? lockdep_hardirqs_on+0x94/0x140 [ 199.539487][ T6530] do_syscall_64+0x4c/0xa0 [ 199.543891][ T6530] ? clear_bhb_loop+0x30/0x80 [ 199.548571][ T6530] ? clear_bhb_loop+0x30/0x80 [ 199.553322][ T6530] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 199.559374][ T6530] RIP: 0033:0x7f16d038274e [ 199.563780][ T6530] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 199.583512][ T6530] RSP: 002b:00007f16cf61cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 199.591934][ T6530] RAX: ffffffffffffffda RBX: 00007f16cf61d6c0 RCX: 00007f16d038274e [ 199.600054][ T6530] RDX: 0000000000000001 RSI: 00007f16cf61d0b0 RDI: 0000000000000005 [ 199.608066][ T6530] RBP: 00007f16cf61d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 199.616031][ T6530] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 199.624074][ T6530] R13: 000000000000006e R14: 00007f16d0566058 R15: 00007ffc849792c8 [ 199.632051][ T6530] [ 199.645777][ T6531] CPU: 0 PID: 6531 Comm: syz.2.361 Not tainted syzkaller #0 [ 199.653144][ T6531] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 199.663264][ T6531] Call Trace: [ 199.666556][ T6531] [ 199.669485][ T6531] dump_stack_lvl+0x188/0x250 [ 199.674186][ T6531] ? show_regs_print_info+0x20/0x20 [ 199.679406][ T6531] ? load_image+0x400/0x400 [ 199.684036][ T6531] ? __lock_acquire+0x7d10/0x7d10 [ 199.689155][ T6531] should_fail+0x38c/0x4c0 [ 199.693705][ T6531] _copy_from_user+0x2e/0x170 [ 199.698388][ T6531] kstrtouint_from_user+0xd3/0x220 [ 199.703512][ T6531] ? kstrtol_from_user+0x2a0/0x2a0 [ 199.708653][ T6531] proc_fail_nth_write+0x8b/0x200 [ 199.713685][ T6531] ? proc_fail_nth_read+0x220/0x220 [ 199.718873][ T6531] ? common_file_perm+0x171/0x1c0 [ 199.723889][ T6531] ? proc_fail_nth_read+0x220/0x220 [ 199.729122][ T6531] vfs_write+0x30b/0xd60 [ 199.733403][ T6531] ? file_end_write+0x250/0x250 [ 199.738280][ T6531] ? __fget_files+0x40f/0x480 [ 199.742975][ T6531] ? mutex_lock_nested+0x17/0x20 [ 199.747930][ T6531] ? __fdget_pos+0x2bf/0x370 [ 199.752530][ T6531] ? ksys_write+0x71/0x260 [ 199.756974][ T6531] ksys_write+0x152/0x260 [ 199.761303][ T6531] ? __ia32_sys_read+0x80/0x80 [ 199.766144][ T6531] ? lockdep_hardirqs_on+0x94/0x140 [ 199.771337][ T6531] do_syscall_64+0x4c/0xa0 [ 199.775749][ T6531] ? clear_bhb_loop+0x30/0x80 [ 199.780418][ T6531] ? clear_bhb_loop+0x30/0x80 [ 199.785083][ T6531] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 199.790963][ T6531] RIP: 0033:0x7fbdb3b2c74e [ 199.795368][ T6531] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 199.815052][ T6531] RSP: 002b:00007fbdb2dc6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 199.823460][ T6531] RAX: ffffffffffffffda RBX: 00007fbdb2dc76c0 RCX: 00007fbdb3b2c74e [ 199.831531][ T6531] RDX: 0000000000000001 RSI: 00007fbdb2dc70b0 RDI: 0000000000000005 [ 199.839524][ T6531] RBP: 00007fbdb2dc70a0 R08: 0000000000000000 R09: 0000000000000000 [ 199.847500][ T6531] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 199.855460][ T6531] R13: 000000000000006e R14: 00007fbdb3d10058 R15: 00007ffc8d3c7768 [ 199.863525][ T6531] [ 199.884957][ T6533] FAULT_INJECTION: forcing a failure. [ 199.884957][ T6533] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 199.914645][ T6537] FAULT_INJECTION: forcing a failure. [ 199.914645][ T6537] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 199.938903][ T6539] FAULT_INJECTION: forcing a failure. [ 199.938903][ T6539] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 199.953186][ T6533] CPU: 1 PID: 6533 Comm: syz.0.364 Not tainted syzkaller #0 [ 199.960513][ T6533] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 199.970689][ T6533] Call Trace: [ 199.973987][ T6533] [ 199.976933][ T6533] dump_stack_lvl+0x188/0x250 [ 199.981718][ T6533] ? show_regs_print_info+0x20/0x20 [ 199.986925][ T6533] ? load_image+0x400/0x400 [ 199.991421][ T6533] ? __lock_acquire+0x7d10/0x7d10 [ 199.996446][ T6533] should_fail+0x38c/0x4c0 [ 200.000878][ T6533] _copy_from_user+0x2e/0x170 [ 200.005544][ T6533] kstrtouint_from_user+0xd3/0x220 [ 200.010821][ T6533] ? kstrtol_from_user+0x2a0/0x2a0 [ 200.015925][ T6533] proc_fail_nth_write+0x8b/0x200 [ 200.020940][ T6533] ? proc_fail_nth_read+0x220/0x220 [ 200.026363][ T6533] ? common_file_perm+0x171/0x1c0 [ 200.031412][ T6533] ? proc_fail_nth_read+0x220/0x220 [ 200.036626][ T6533] vfs_write+0x30b/0xd60 [ 200.040877][ T6533] ? file_end_write+0x250/0x250 [ 200.045726][ T6533] ? __fget_files+0x40f/0x480 [ 200.050398][ T6533] ? mutex_lock_nested+0x17/0x20 [ 200.055344][ T6533] ? __fdget_pos+0x2bf/0x370 [ 200.059916][ T6533] ? ksys_write+0x71/0x260 [ 200.064326][ T6533] ksys_write+0x152/0x260 [ 200.068766][ T6533] ? __ia32_sys_read+0x80/0x80 [ 200.073556][ T6533] ? lockdep_hardirqs_on+0x94/0x140 [ 200.078793][ T6533] do_syscall_64+0x4c/0xa0 [ 200.083208][ T6533] ? clear_bhb_loop+0x30/0x80 [ 200.087877][ T6533] ? clear_bhb_loop+0x30/0x80 [ 200.092559][ T6533] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 200.098483][ T6533] RIP: 0033:0x7f864b3a574e [ 200.102946][ T6533] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 200.122742][ T6533] RSP: 002b:00007f864a660ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 200.131188][ T6533] RAX: ffffffffffffffda RBX: 00007f864a6616c0 RCX: 00007f864b3a574e [ 200.139421][ T6533] RDX: 0000000000000001 RSI: 00007f864a6610b0 RDI: 0000000000000006 [ 200.147661][ T6533] RBP: 00007f864a6610a0 R08: 0000000000000000 R09: 0000000000000000 [ 200.156032][ T6533] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 200.164117][ T6533] R13: 000000000000000b R14: 00007f864b588f80 R15: 00007ffeb91066c8 [ 200.172127][ T6533] [ 200.181930][ T6537] CPU: 1 PID: 6537 Comm: syz.1.365 Not tainted syzkaller #0 [ 200.189282][ T6537] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 200.199373][ T6537] Call Trace: [ 200.202676][ T6537] [ 200.205603][ T6537] dump_stack_lvl+0x188/0x250 [ 200.210280][ T6537] ? show_regs_print_info+0x20/0x20 [ 200.215484][ T6537] ? load_image+0x400/0x400 [ 200.219979][ T6537] ? __lock_acquire+0x7d10/0x7d10 [ 200.225104][ T6537] should_fail+0x38c/0x4c0 [ 200.229707][ T6537] _copy_from_user+0x2e/0x170 [ 200.234408][ T6537] kstrtouint_from_user+0xd3/0x220 [ 200.239546][ T6537] ? kstrtol_from_user+0x2a0/0x2a0 [ 200.244668][ T6537] proc_fail_nth_write+0x8b/0x200 [ 200.249690][ T6537] ? proc_fail_nth_read+0x220/0x220 [ 200.254875][ T6537] ? common_file_perm+0x171/0x1c0 [ 200.259891][ T6537] ? proc_fail_nth_read+0x220/0x220 [ 200.265419][ T6537] vfs_write+0x30b/0xd60 [ 200.269721][ T6537] ? file_end_write+0x250/0x250 [ 200.274678][ T6537] ? __fget_files+0x40f/0x480 [ 200.279471][ T6537] ? mutex_lock_nested+0x17/0x20 [ 200.284511][ T6537] ? __fdget_pos+0x2bf/0x370 [ 200.289257][ T6537] ? ksys_write+0x71/0x260 [ 200.293664][ T6537] ksys_write+0x152/0x260 [ 200.297982][ T6537] ? __ia32_sys_read+0x80/0x80 [ 200.302735][ T6537] ? lockdep_hardirqs_on+0x94/0x140 [ 200.307927][ T6537] do_syscall_64+0x4c/0xa0 [ 200.312330][ T6537] ? clear_bhb_loop+0x30/0x80 [ 200.316996][ T6537] ? clear_bhb_loop+0x30/0x80 [ 200.321661][ T6537] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 200.327543][ T6537] RIP: 0033:0x7f3baf05d74e [ 200.331950][ T6537] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 200.351787][ T6537] RSP: 002b:00007f3bae318ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 200.360387][ T6537] RAX: ffffffffffffffda RBX: 00007f3bae3196c0 RCX: 00007f3baf05d74e [ 200.368350][ T6537] RDX: 0000000000000001 RSI: 00007f3bae3190b0 RDI: 0000000000000007 [ 200.376313][ T6537] RBP: 00007f3bae3190a0 R08: 0000000000000000 R09: 0000000000000000 [ 200.384299][ T6537] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 200.392291][ T6537] R13: 000000000000000b R14: 00007f3baf240f80 R15: 00007ffeabae9a08 [ 200.400463][ T6537] [ 200.413369][ T6539] CPU: 0 PID: 6539 Comm: syz.3.367 Not tainted syzkaller #0 [ 200.420707][ T6539] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 200.430778][ T6539] Call Trace: [ 200.434073][ T6539] [ 200.437005][ T6539] dump_stack_lvl+0x188/0x250 [ 200.441676][ T6539] ? show_regs_print_info+0x20/0x20 [ 200.446866][ T6539] ? load_image+0x400/0x400 [ 200.451359][ T6539] ? __lock_acquire+0x7d10/0x7d10 [ 200.456385][ T6539] should_fail+0x38c/0x4c0 [ 200.460794][ T6539] _copy_from_user+0x2e/0x170 [ 200.465462][ T6539] kstrtouint_from_user+0xd3/0x220 [ 200.470560][ T6539] ? kstrtol_from_user+0x2a0/0x2a0 [ 200.475670][ T6539] proc_fail_nth_write+0x8b/0x200 [ 200.480778][ T6539] ? proc_fail_nth_read+0x220/0x220 [ 200.486051][ T6539] ? common_file_perm+0x171/0x1c0 [ 200.491160][ T6539] ? proc_fail_nth_read+0x220/0x220 [ 200.496350][ T6539] vfs_write+0x30b/0xd60 [ 200.500589][ T6539] ? file_end_write+0x250/0x250 [ 200.505518][ T6539] ? __fget_files+0x40f/0x480 [ 200.510205][ T6539] ? mutex_lock_nested+0x17/0x20 [ 200.515153][ T6539] ? __fdget_pos+0x2bf/0x370 [ 200.519749][ T6539] ? ksys_write+0x71/0x260 [ 200.524170][ T6539] ksys_write+0x152/0x260 [ 200.528510][ T6539] ? __ia32_sys_read+0x80/0x80 [ 200.533292][ T6539] ? lockdep_hardirqs_on+0x94/0x140 [ 200.538483][ T6539] do_syscall_64+0x4c/0xa0 [ 200.542884][ T6539] ? clear_bhb_loop+0x30/0x80 [ 200.547547][ T6539] ? clear_bhb_loop+0x30/0x80 [ 200.552211][ T6539] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 200.558094][ T6539] RIP: 0033:0x7fbad61c174e [ 200.562503][ T6539] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 200.582444][ T6539] RSP: 002b:00007fbad547cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 200.590949][ T6539] RAX: ffffffffffffffda RBX: 00007fbad547d6c0 RCX: 00007fbad61c174e [ 200.598908][ T6539] RDX: 0000000000000001 RSI: 00007fbad547d0b0 RDI: 0000000000000007 [ 200.606868][ T6539] RBP: 00007fbad547d0a0 R08: 0000000000000000 R09: 0000000000000000 2026/04/25 10:13:38 executed programs: 363 [ 200.614827][ T6539] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 200.622868][ T6539] R13: 000000000000000b R14: 00007fbad63a4f80 R15: 00007ffe2023ce08 [ 200.631021][ T6539] [ 200.634999][ T6540] FAULT_INJECTION: forcing a failure. [ 200.634999][ T6540] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 200.654722][ T6540] CPU: 1 PID: 6540 Comm: syz.4.366 Not tainted syzkaller #0 [ 200.662150][ T6540] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 200.672397][ T6540] Call Trace: [ 200.675773][ T6540] [ 200.678706][ T6540] dump_stack_lvl+0x188/0x250 [ 200.683467][ T6540] ? show_regs_print_info+0x20/0x20 [ 200.688652][ T6540] ? load_image+0x400/0x400 [ 200.693238][ T6540] ? __lock_acquire+0x7d10/0x7d10 [ 200.698253][ T6540] should_fail+0x38c/0x4c0 [ 200.702661][ T6540] _copy_from_user+0x2e/0x170 [ 200.707330][ T6540] kstrtouint_from_user+0xd3/0x220 [ 200.712436][ T6540] ? kstrtol_from_user+0x2a0/0x2a0 [ 200.717630][ T6540] proc_fail_nth_write+0x8b/0x200 [ 200.722643][ T6540] ? proc_fail_nth_read+0x220/0x220 [ 200.728014][ T6540] ? common_file_perm+0x171/0x1c0 [ 200.733145][ T6540] ? proc_fail_nth_read+0x220/0x220 [ 200.738376][ T6540] vfs_write+0x30b/0xd60 [ 200.742643][ T6540] ? file_end_write+0x250/0x250 [ 200.747516][ T6540] ? __fget_files+0x40f/0x480 [ 200.752191][ T6540] ? mutex_lock_nested+0x17/0x20 [ 200.757119][ T6540] ? __fdget_pos+0x2bf/0x370 [ 200.761698][ T6540] ? ksys_write+0x71/0x260 [ 200.766101][ T6540] ksys_write+0x152/0x260 [ 200.770550][ T6540] ? __ia32_sys_read+0x80/0x80 [ 200.775458][ T6540] ? lockdep_hardirqs_on+0x94/0x140 [ 200.781040][ T6540] do_syscall_64+0x4c/0xa0 [ 200.785631][ T6540] ? clear_bhb_loop+0x30/0x80 [ 200.790306][ T6540] ? clear_bhb_loop+0x30/0x80 [ 200.795019][ T6540] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 200.800948][ T6540] RIP: 0033:0x7f16d038274e [ 200.805456][ T6540] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 200.825582][ T6540] RSP: 002b:00007f16cf63dff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 200.834003][ T6540] RAX: ffffffffffffffda RBX: 00007f16cf63e6c0 RCX: 00007f16d038274e [ 200.841972][ T6540] RDX: 0000000000000001 RSI: 00007f16cf63e0b0 RDI: 0000000000000006 [ 200.849932][ T6540] RBP: 00007f16cf63e0a0 R08: 0000000000000000 R09: 0000000000000000 [ 200.858116][ T6540] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 200.866131][ T6540] R13: 000000000000000b R14: 00007f16d0565f80 R15: 00007ffc849792c8 [ 200.874204][ T6540] [ 200.901593][ T6546] FAULT_INJECTION: forcing a failure. [ 200.901593][ T6546] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 200.923615][ T6548] FAULT_INJECTION: forcing a failure. [ 200.923615][ T6548] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 200.941618][ T6543] FAULT_INJECTION: forcing a failure. [ 200.941618][ T6543] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 200.958113][ T6551] FAULT_INJECTION: forcing a failure. [ 200.958113][ T6551] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 200.972995][ T6550] FAULT_INJECTION: forcing a failure. [ 200.972995][ T6550] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 200.993342][ T6548] CPU: 0 PID: 6548 Comm: syz.3.370 Not tainted syzkaller #0 [ 201.000681][ T6548] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 201.010952][ T6548] Call Trace: [ 201.014248][ T6548] [ 201.017477][ T6548] dump_stack_lvl+0x188/0x250 [ 201.022174][ T6548] ? show_regs_print_info+0x20/0x20 [ 201.027369][ T6548] ? load_image+0x400/0x400 [ 201.031875][ T6548] ? __lock_acquire+0x7d10/0x7d10 [ 201.037102][ T6548] should_fail+0x38c/0x4c0 [ 201.041562][ T6548] _copy_from_user+0x2e/0x170 [ 201.046343][ T6548] kstrtouint_from_user+0xd3/0x220 [ 201.051531][ T6548] ? kstrtol_from_user+0x2a0/0x2a0 [ 201.056778][ T6548] proc_fail_nth_write+0x8b/0x200 [ 201.061842][ T6548] ? proc_fail_nth_read+0x220/0x220 [ 201.067065][ T6548] ? common_file_perm+0x171/0x1c0 [ 201.072166][ T6548] ? proc_fail_nth_read+0x220/0x220 [ 201.077386][ T6548] vfs_write+0x30b/0xd60 [ 201.081765][ T6548] ? file_end_write+0x250/0x250 [ 201.086722][ T6548] ? __fget_files+0x40f/0x480 [ 201.091442][ T6548] ? mutex_lock_nested+0x17/0x20 [ 201.096575][ T6548] ? __fdget_pos+0x2bf/0x370 [ 201.101178][ T6548] ? ksys_write+0x71/0x260 [ 201.105601][ T6548] ksys_write+0x152/0x260 [ 201.109973][ T6548] ? __ia32_sys_read+0x80/0x80 [ 201.114809][ T6548] ? lockdep_hardirqs_on+0x94/0x140 [ 201.120481][ T6548] do_syscall_64+0x4c/0xa0 [ 201.124922][ T6548] ? clear_bhb_loop+0x30/0x80 [ 201.129621][ T6548] ? clear_bhb_loop+0x30/0x80 [ 201.134341][ T6548] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 201.140273][ T6548] RIP: 0033:0x7fbad61c174e [ 201.144800][ T6548] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 201.164696][ T6548] RSP: 002b:00007fbad547cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 201.173124][ T6548] RAX: ffffffffffffffda RBX: 00007fbad547d6c0 RCX: 00007fbad61c174e [ 201.181211][ T6548] RDX: 0000000000000001 RSI: 00007fbad547d0b0 RDI: 0000000000000007 [ 201.189184][ T6548] RBP: 00007fbad547d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 201.197159][ T6548] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 201.205232][ T6548] R13: 000000000000000b R14: 00007fbad63a4f80 R15: 00007ffe2023ce08 [ 201.213317][ T6548] [ 201.216334][ T6546] CPU: 1 PID: 6546 Comm: syz.1.371 Not tainted syzkaller #0 [ 201.223756][ T6546] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 201.233920][ T6546] Call Trace: [ 201.237208][ T6546] [ 201.240142][ T6546] dump_stack_lvl+0x188/0x250 [ 201.244824][ T6546] ? show_regs_print_info+0x20/0x20 [ 201.250024][ T6546] ? load_image+0x400/0x400 [ 201.254559][ T6546] ? __lock_acquire+0x7d10/0x7d10 [ 201.259672][ T6546] should_fail+0x38c/0x4c0 [ 201.264100][ T6546] _copy_from_user+0x2e/0x170 [ 201.268790][ T6546] kstrtouint_from_user+0xd3/0x220 [ 201.274010][ T6546] ? kstrtol_from_user+0x2a0/0x2a0 [ 201.279137][ T6546] proc_fail_nth_write+0x8b/0x200 [ 201.284167][ T6546] ? proc_fail_nth_read+0x220/0x220 [ 201.289368][ T6546] ? common_file_perm+0x171/0x1c0 [ 201.294398][ T6546] ? proc_fail_nth_read+0x220/0x220 [ 201.299699][ T6546] vfs_write+0x30b/0xd60 [ 201.303971][ T6546] ? file_end_write+0x250/0x250 [ 201.308827][ T6546] ? __fget_files+0x40f/0x480 [ 201.313506][ T6546] ? mutex_lock_nested+0x17/0x20 [ 201.318526][ T6546] ? __fdget_pos+0x2bf/0x370 [ 201.323121][ T6546] ? ksys_write+0x71/0x260 [ 201.327541][ T6546] ksys_write+0x152/0x260 [ 201.332015][ T6546] ? __ia32_sys_read+0x80/0x80 [ 201.336782][ T6546] ? lockdep_hardirqs_on+0x94/0x140 [ 201.342078][ T6546] do_syscall_64+0x4c/0xa0 [ 201.346583][ T6546] ? clear_bhb_loop+0x30/0x80 [ 201.351345][ T6546] ? clear_bhb_loop+0x30/0x80 [ 201.356016][ T6546] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 201.361961][ T6546] RIP: 0033:0x7f3baf05d74e [ 201.366461][ T6546] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 201.386248][ T6546] RSP: 002b:00007f3bae318ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 201.394671][ T6546] RAX: ffffffffffffffda RBX: 00007f3bae3196c0 RCX: 00007f3baf05d74e [ 201.402736][ T6546] RDX: 0000000000000001 RSI: 00007f3bae3190b0 RDI: 0000000000000007 [ 201.410976][ T6546] RBP: 00007f3bae3190a0 R08: 0000000000000000 R09: 0000000000000000 [ 201.418953][ T6546] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 201.427012][ T6546] R13: 000000000000000b R14: 00007f3baf240f80 R15: 00007ffeabae9a08 [ 201.435125][ T6546] [ 201.438152][ T6543] CPU: 0 PID: 6543 Comm: syz.0.368 Not tainted syzkaller #0 [ 201.445453][ T6543] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 201.455527][ T6543] Call Trace: [ 201.458812][ T6543] [ 201.461749][ T6543] dump_stack_lvl+0x188/0x250 [ 201.466525][ T6543] ? show_regs_print_info+0x20/0x20 [ 201.471714][ T6543] ? load_image+0x400/0x400 [ 201.476417][ T6543] ? __lock_acquire+0x7d10/0x7d10 [ 201.481617][ T6543] should_fail+0x38c/0x4c0 [ 201.486063][ T6543] _copy_from_user+0x2e/0x170 [ 201.490958][ T6543] kstrtouint_from_user+0xd3/0x220 [ 201.496086][ T6543] ? kstrtol_from_user+0x2a0/0x2a0 [ 201.501215][ T6543] proc_fail_nth_write+0x8b/0x200 [ 201.506260][ T6543] ? proc_fail_nth_read+0x220/0x220 [ 201.511481][ T6543] ? common_file_perm+0x171/0x1c0 [ 201.516530][ T6543] ? proc_fail_nth_read+0x220/0x220 [ 201.521759][ T6543] vfs_write+0x30b/0xd60 [ 201.526030][ T6543] ? file_end_write+0x250/0x250 [ 201.530896][ T6543] ? __fget_files+0x40f/0x480 [ 201.535591][ T6543] ? mutex_lock_nested+0x17/0x20 [ 201.540546][ T6543] ? __fdget_pos+0x2bf/0x370 [ 201.545146][ T6543] ? ksys_write+0x71/0x260 [ 201.549572][ T6543] ksys_write+0x152/0x260 [ 201.553935][ T6543] ? __ia32_sys_read+0x80/0x80 [ 201.558716][ T6543] ? lockdep_hardirqs_on+0x94/0x140 [ 201.564446][ T6543] do_syscall_64+0x4c/0xa0 [ 201.568884][ T6543] ? clear_bhb_loop+0x30/0x80 [ 201.573585][ T6543] ? clear_bhb_loop+0x30/0x80 [ 201.578297][ T6543] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 201.584348][ T6543] RIP: 0033:0x7f864b3a574e [ 201.588786][ T6543] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 201.608424][ T6543] RSP: 002b:00007f864a660ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 201.616860][ T6543] RAX: ffffffffffffffda RBX: 00007f864a6616c0 RCX: 00007f864b3a574e [ 201.624988][ T6543] RDX: 0000000000000001 RSI: 00007f864a6610b0 RDI: 0000000000000007 [ 201.633120][ T6543] RBP: 00007f864a6610a0 R08: 0000000000000000 R09: 0000000000000000 [ 201.641227][ T6543] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 201.649284][ T6543] R13: 000000000000000b R14: 00007f864b588f80 R15: 00007ffeb91066c8 [ 201.657370][ T6543] [ 201.662325][ T6550] CPU: 0 PID: 6550 Comm: syz.4.372 Not tainted syzkaller #0 [ 201.669647][ T6550] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 201.679718][ T6550] Call Trace: [ 201.683030][ T6550] [ 201.685963][ T6550] dump_stack_lvl+0x188/0x250 [ 201.690680][ T6550] ? show_regs_print_info+0x20/0x20 [ 201.696251][ T6550] ? load_image+0x400/0x400 [ 201.700947][ T6550] ? __lock_acquire+0x7d10/0x7d10 [ 201.705988][ T6550] should_fail+0x38c/0x4c0 [ 201.710444][ T6550] _copy_from_user+0x2e/0x170 [ 201.715130][ T6550] kstrtouint_from_user+0xd3/0x220 [ 201.720354][ T6550] ? kstrtol_from_user+0x2a0/0x2a0 [ 201.725503][ T6550] proc_fail_nth_write+0x8b/0x200 [ 201.730638][ T6550] ? proc_fail_nth_read+0x220/0x220 [ 201.735869][ T6550] ? common_file_perm+0x171/0x1c0 [ 201.740997][ T6550] ? proc_fail_nth_read+0x220/0x220 [ 201.746283][ T6550] vfs_write+0x30b/0xd60 [ 201.750556][ T6550] ? file_end_write+0x250/0x250 [ 201.755435][ T6550] ? __fget_files+0x40f/0x480 [ 201.760135][ T6550] ? mutex_lock_nested+0x17/0x20 [ 201.765092][ T6550] ? __fdget_pos+0x2bf/0x370 [ 201.769703][ T6550] ? ksys_write+0x71/0x260 [ 201.774166][ T6550] ksys_write+0x152/0x260 [ 201.778614][ T6550] ? __ia32_sys_read+0x80/0x80 [ 201.783403][ T6550] ? lockdep_hardirqs_on+0x94/0x140 [ 201.788628][ T6550] do_syscall_64+0x4c/0xa0 [ 201.793235][ T6550] ? clear_bhb_loop+0x30/0x80 [ 201.798052][ T6550] ? clear_bhb_loop+0x30/0x80 [ 201.802757][ T6550] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 201.808855][ T6550] RIP: 0033:0x7f16d038274e [ 201.813290][ T6550] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 201.833083][ T6550] RSP: 002b:00007f16cf63dff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 201.841537][ T6550] RAX: ffffffffffffffda RBX: 00007f16cf63e6c0 RCX: 00007f16d038274e [ 201.849525][ T6550] RDX: 0000000000000001 RSI: 00007f16cf63e0b0 RDI: 0000000000000007 [ 201.857576][ T6550] RBP: 00007f16cf63e0a0 R08: 0000000000000000 R09: 0000000000000000 [ 201.865590][ T6550] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 201.873691][ T6550] R13: 000000000000000b R14: 00007f16d0565f80 R15: 00007ffc849792c8 [ 201.881685][ T6550] [ 201.884718][ T6551] CPU: 1 PID: 6551 Comm: syz.2.369 Not tainted syzkaller #0 [ 201.892188][ T6551] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 201.902274][ T6551] Call Trace: [ 201.905572][ T6551] [ 201.908496][ T6551] dump_stack_lvl+0x188/0x250 [ 201.913171][ T6551] ? show_regs_print_info+0x20/0x20 [ 201.918367][ T6551] ? load_image+0x400/0x400 [ 201.923035][ T6551] ? __lock_acquire+0x7d10/0x7d10 [ 201.928065][ T6551] should_fail+0x38c/0x4c0 [ 201.932480][ T6551] _copy_from_user+0x2e/0x170 [ 201.937157][ T6551] kstrtouint_from_user+0xd3/0x220 [ 201.942274][ T6551] ? kstrtol_from_user+0x2a0/0x2a0 [ 201.947502][ T6551] proc_fail_nth_write+0x8b/0x200 [ 201.952629][ T6551] ? proc_fail_nth_read+0x220/0x220 [ 201.957845][ T6551] ? common_file_perm+0x171/0x1c0 [ 201.962869][ T6551] ? proc_fail_nth_read+0x220/0x220 [ 201.968056][ T6551] vfs_write+0x30b/0xd60 [ 201.972295][ T6551] ? file_end_write+0x250/0x250 [ 201.977138][ T6551] ? __fget_files+0x40f/0x480 [ 201.981814][ T6551] ? mutex_lock_nested+0x17/0x20 [ 201.986945][ T6551] ? __fdget_pos+0x2bf/0x370 [ 201.991692][ T6551] ? ksys_write+0x71/0x260 [ 201.996180][ T6551] ksys_write+0x152/0x260 [ 202.000520][ T6551] ? __ia32_sys_read+0x80/0x80 [ 202.005366][ T6551] ? lockdep_hardirqs_on+0x94/0x140 [ 202.010661][ T6551] do_syscall_64+0x4c/0xa0 [ 202.015075][ T6551] ? clear_bhb_loop+0x30/0x80 [ 202.019744][ T6551] ? clear_bhb_loop+0x30/0x80 [ 202.024412][ T6551] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 202.030289][ T6551] RIP: 0033:0x7fbdb3b2c74e [ 202.034691][ T6551] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 202.054633][ T6551] RSP: 002b:00007fbdb2de7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 202.063047][ T6551] RAX: ffffffffffffffda RBX: 00007fbdb2de86c0 RCX: 00007fbdb3b2c74e [ 202.071196][ T6551] RDX: 0000000000000001 RSI: 00007fbdb2de80b0 RDI: 0000000000000007 [ 202.079251][ T6551] RBP: 00007fbdb2de80a0 R08: 0000000000000000 R09: 0000000000000000 [ 202.087217][ T6551] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 202.095201][ T6551] R13: 000000000000000b R14: 00007fbdb3d0ff80 R15: 00007ffc8d3c7768 [ 202.103176][ T6551] [ 202.113838][ T6554] FAULT_INJECTION: forcing a failure. [ 202.113838][ T6554] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 202.162845][ T6554] CPU: 1 PID: 6554 Comm: syz.3.373 Not tainted syzkaller #0 [ 202.170305][ T6554] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 202.180382][ T6554] Call Trace: [ 202.183683][ T6554] [ 202.186626][ T6554] dump_stack_lvl+0x188/0x250 [ 202.191412][ T6554] ? show_regs_print_info+0x20/0x20 [ 202.196618][ T6554] ? load_image+0x400/0x400 [ 202.201121][ T6554] ? __lock_acquire+0x7d10/0x7d10 [ 202.206179][ T6554] should_fail+0x38c/0x4c0 [ 202.210594][ T6554] _copy_from_user+0x2e/0x170 [ 202.215273][ T6554] kstrtouint_from_user+0xd3/0x220 [ 202.220482][ T6554] ? kstrtol_from_user+0x2a0/0x2a0 [ 202.225621][ T6554] proc_fail_nth_write+0x8b/0x200 [ 202.230822][ T6554] ? proc_fail_nth_read+0x220/0x220 [ 202.236014][ T6554] ? common_file_perm+0x171/0x1c0 [ 202.241240][ T6554] ? proc_fail_nth_read+0x220/0x220 [ 202.246452][ T6554] vfs_write+0x30b/0xd60 [ 202.250684][ T6554] ? file_end_write+0x250/0x250 [ 202.255537][ T6554] ? __fget_files+0x40f/0x480 [ 202.260237][ T6554] ? mutex_lock_nested+0x17/0x20 [ 202.265595][ T6554] ? __fdget_pos+0x2bf/0x370 [ 202.270171][ T6554] ? ksys_write+0x71/0x260 [ 202.274588][ T6554] ksys_write+0x152/0x260 [ 202.278913][ T6554] ? __ia32_sys_read+0x80/0x80 [ 202.283696][ T6554] ? lockdep_hardirqs_on+0x94/0x140 [ 202.288887][ T6554] do_syscall_64+0x4c/0xa0 [ 202.293305][ T6554] ? clear_bhb_loop+0x30/0x80 [ 202.298080][ T6554] ? clear_bhb_loop+0x30/0x80 [ 202.302984][ T6554] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 202.308894][ T6554] RIP: 0033:0x7fbad61c174e [ 202.313310][ T6554] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 202.332924][ T6554] RSP: 002b:00007fbad545bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 202.341347][ T6554] RAX: ffffffffffffffda RBX: 00007fbad545c6c0 RCX: 00007fbad61c174e [ 202.349312][ T6554] RDX: 0000000000000001 RSI: 00007fbad545c0b0 RDI: 0000000000000005 [ 202.357280][ T6554] RBP: 00007fbad545c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 202.365237][ T6554] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 202.373203][ T6554] R13: 000000000000006e R14: 00007fbad63a5058 R15: 00007ffe2023ce08 [ 202.381192][ T6554] [ 202.386374][ T6564] FAULT_INJECTION: forcing a failure. [ 202.386374][ T6564] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 202.400476][ T6565] FAULT_INJECTION: forcing a failure. [ 202.400476][ T6565] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 202.416481][ T6563] FAULT_INJECTION: forcing a failure. [ 202.416481][ T6563] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 202.433271][ T6566] FAULT_INJECTION: forcing a failure. [ 202.433271][ T6566] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 202.446543][ T6563] CPU: 0 PID: 6563 Comm: syz.2.377 Not tainted syzkaller #0 [ 202.453851][ T6563] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 202.463999][ T6563] Call Trace: [ 202.467362][ T6563] [ 202.470291][ T6563] dump_stack_lvl+0x188/0x250 [ 202.475155][ T6563] ? show_regs_print_info+0x20/0x20 [ 202.480521][ T6563] ? load_image+0x400/0x400 [ 202.485158][ T6563] ? __lock_acquire+0x7d10/0x7d10 [ 202.490205][ T6563] should_fail+0x38c/0x4c0 [ 202.494637][ T6563] _copy_from_user+0x2e/0x170 [ 202.499419][ T6563] kstrtouint_from_user+0xd3/0x220 [ 202.504746][ T6563] ? kstrtol_from_user+0x2a0/0x2a0 [ 202.510154][ T6563] proc_fail_nth_write+0x8b/0x200 [ 202.515193][ T6563] ? proc_fail_nth_read+0x220/0x220 [ 202.520521][ T6563] ? common_file_perm+0x171/0x1c0 [ 202.526197][ T6563] ? proc_fail_nth_read+0x220/0x220 [ 202.531492][ T6563] vfs_write+0x30b/0xd60 [ 202.535734][ T6563] ? file_end_write+0x250/0x250 [ 202.540583][ T6563] ? __fget_files+0x40f/0x480 [ 202.545348][ T6563] ? mutex_lock_nested+0x17/0x20 [ 202.550298][ T6563] ? __fdget_pos+0x2bf/0x370 [ 202.555156][ T6563] ? ksys_write+0x71/0x260 [ 202.559563][ T6563] ksys_write+0x152/0x260 [ 202.563973][ T6563] ? __ia32_sys_read+0x80/0x80 [ 202.568773][ T6563] ? lockdep_hardirqs_on+0x94/0x140 [ 202.574033][ T6563] do_syscall_64+0x4c/0xa0 [ 202.578437][ T6563] ? clear_bhb_loop+0x30/0x80 [ 202.583192][ T6563] ? clear_bhb_loop+0x30/0x80 [ 202.587885][ T6563] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 202.593886][ T6563] RIP: 0033:0x7fbdb3b2c74e [ 202.598299][ T6563] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 202.618164][ T6563] RSP: 002b:00007fbdb2dc6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 202.626573][ T6563] RAX: ffffffffffffffda RBX: 00007fbdb2dc76c0 RCX: 00007fbdb3b2c74e [ 202.634533][ T6563] RDX: 0000000000000001 RSI: 00007fbdb2dc70b0 RDI: 0000000000000005 [ 202.642497][ T6563] RBP: 00007fbdb2dc70a0 R08: 0000000000000000 R09: 0000000000000000 [ 202.650636][ T6563] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 202.658917][ T6563] R13: 000000000000006e R14: 00007fbdb3d10058 R15: 00007ffc8d3c7768 [ 202.666913][ T6563] [ 202.673408][ T6565] CPU: 0 PID: 6565 Comm: syz.4.375 Not tainted syzkaller #0 [ 202.680861][ T6565] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 202.690947][ T6565] Call Trace: [ 202.694252][ T6565] [ 202.697190][ T6565] dump_stack_lvl+0x188/0x250 [ 202.702042][ T6565] ? show_regs_print_info+0x20/0x20 [ 202.707342][ T6565] ? load_image+0x400/0x400 [ 202.711851][ T6565] ? __lock_acquire+0x7d10/0x7d10 [ 202.716888][ T6565] should_fail+0x38c/0x4c0 [ 202.721402][ T6565] _copy_from_user+0x2e/0x170 [ 202.726263][ T6565] kstrtouint_from_user+0xd3/0x220 [ 202.731575][ T6565] ? kstrtol_from_user+0x2a0/0x2a0 [ 202.736799][ T6565] proc_fail_nth_write+0x8b/0x200 [ 202.741919][ T6565] ? proc_fail_nth_read+0x220/0x220 [ 202.747302][ T6565] ? common_file_perm+0x171/0x1c0 [ 202.752345][ T6565] ? proc_fail_nth_read+0x220/0x220 [ 202.757634][ T6565] vfs_write+0x30b/0xd60 [ 202.761880][ T6565] ? file_end_write+0x250/0x250 [ 202.766813][ T6565] ? __fget_files+0x40f/0x480 [ 202.771485][ T6565] ? mutex_lock_nested+0x17/0x20 [ 202.776429][ T6565] ? __fdget_pos+0x2bf/0x370 [ 202.781024][ T6565] ? ksys_write+0x71/0x260 [ 202.785461][ T6565] ksys_write+0x152/0x260 [ 202.789812][ T6565] ? __ia32_sys_read+0x80/0x80 [ 202.794672][ T6565] ? lockdep_hardirqs_on+0x94/0x140 [ 202.799882][ T6565] do_syscall_64+0x4c/0xa0 [ 202.804389][ T6565] ? clear_bhb_loop+0x30/0x80 [ 202.809065][ T6565] ? clear_bhb_loop+0x30/0x80 [ 202.813744][ T6565] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 202.819642][ T6565] RIP: 0033:0x7f16d038274e [ 202.824106][ T6565] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 202.843899][ T6565] RSP: 002b:00007f16cf61cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 202.852447][ T6565] RAX: ffffffffffffffda RBX: 00007f16cf61d6c0 RCX: 00007f16d038274e [ 202.860517][ T6565] RDX: 0000000000000001 RSI: 00007f16cf61d0b0 RDI: 0000000000000005 [ 202.868504][ T6565] RBP: 00007f16cf61d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 202.876578][ T6565] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 202.884565][ T6565] R13: 000000000000006e R14: 00007f16d0566058 R15: 00007ffc849792c8 [ 202.892561][ T6565] [ 202.895582][ T6564] CPU: 1 PID: 6564 Comm: syz.1.376 Not tainted syzkaller #0 [ 202.902970][ T6564] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 202.913030][ T6564] Call Trace: [ 202.916302][ T6564] [ 202.919224][ T6564] dump_stack_lvl+0x188/0x250 [ 202.923896][ T6564] ? show_regs_print_info+0x20/0x20 [ 202.929089][ T6564] ? load_image+0x400/0x400 [ 202.933588][ T6564] ? __lock_acquire+0x7d10/0x7d10 [ 202.938618][ T6564] should_fail+0x38c/0x4c0 [ 202.943049][ T6564] _copy_from_user+0x2e/0x170 [ 202.948032][ T6564] kstrtouint_from_user+0xd3/0x220 [ 202.953262][ T6564] ? kstrtol_from_user+0x2a0/0x2a0 [ 202.958401][ T6564] proc_fail_nth_write+0x8b/0x200 [ 202.963444][ T6564] ? proc_fail_nth_read+0x220/0x220 [ 202.968636][ T6564] ? common_file_perm+0x171/0x1c0 [ 202.973678][ T6564] ? proc_fail_nth_read+0x220/0x220 [ 202.978910][ T6564] vfs_write+0x30b/0xd60 [ 202.983163][ T6564] ? file_end_write+0x250/0x250 [ 202.988100][ T6564] ? __fget_files+0x40f/0x480 [ 202.992790][ T6564] ? mutex_lock_nested+0x17/0x20 [ 202.997904][ T6564] ? __fdget_pos+0x2bf/0x370 [ 203.002504][ T6564] ? ksys_write+0x71/0x260 [ 203.007032][ T6564] ksys_write+0x152/0x260 [ 203.011366][ T6564] ? __ia32_sys_read+0x80/0x80 [ 203.016131][ T6564] ? lockdep_hardirqs_on+0x94/0x140 [ 203.021327][ T6564] do_syscall_64+0x4c/0xa0 [ 203.025736][ T6564] ? clear_bhb_loop+0x30/0x80 [ 203.030401][ T6564] ? clear_bhb_loop+0x30/0x80 [ 203.035239][ T6564] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 203.041141][ T6564] RIP: 0033:0x7f3baf05d74e [ 203.045634][ T6564] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 203.065281][ T6564] RSP: 002b:00007f3bae2f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 203.073851][ T6564] RAX: ffffffffffffffda RBX: 00007f3bae2f86c0 RCX: 00007f3baf05d74e [ 203.081997][ T6564] RDX: 0000000000000001 RSI: 00007f3bae2f80b0 RDI: 0000000000000005 [ 203.090995][ T6564] RBP: 00007f3bae2f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 203.098979][ T6564] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 203.106967][ T6564] R13: 000000000000006e R14: 00007f3baf241058 R15: 00007ffeabae9a08 [ 203.115029][ T6564] [ 203.119583][ T6566] CPU: 0 PID: 6566 Comm: syz.0.374 Not tainted syzkaller #0 [ 203.126908][ T6566] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 203.137168][ T6566] Call Trace: [ 203.140547][ T6566] [ 203.143556][ T6566] dump_stack_lvl+0x188/0x250 [ 203.148322][ T6566] ? show_regs_print_info+0x20/0x20 [ 203.153594][ T6566] ? load_image+0x400/0x400 [ 203.158144][ T6566] ? __lock_acquire+0x7d10/0x7d10 [ 203.163166][ T6566] should_fail+0x38c/0x4c0 [ 203.167576][ T6566] _copy_from_user+0x2e/0x170 [ 203.172239][ T6566] kstrtouint_from_user+0xd3/0x220 [ 203.177426][ T6566] ? kstrtol_from_user+0x2a0/0x2a0 [ 203.182533][ T6566] proc_fail_nth_write+0x8b/0x200 [ 203.187636][ T6566] ? proc_fail_nth_read+0x220/0x220 [ 203.192824][ T6566] ? common_file_perm+0x171/0x1c0 [ 203.198024][ T6566] ? proc_fail_nth_read+0x220/0x220 [ 203.203224][ T6566] vfs_write+0x30b/0xd60 [ 203.208001][ T6566] ? file_end_write+0x250/0x250 [ 203.212842][ T6566] ? __fget_files+0x40f/0x480 [ 203.217685][ T6566] ? mutex_lock_nested+0x17/0x20 [ 203.222762][ T6566] ? __fdget_pos+0x2bf/0x370 [ 203.227338][ T6566] ? ksys_write+0x71/0x260 [ 203.231741][ T6566] ksys_write+0x152/0x260 [ 203.236146][ T6566] ? __ia32_sys_read+0x80/0x80 [ 203.240896][ T6566] ? lockdep_hardirqs_on+0x94/0x140 [ 203.246084][ T6566] do_syscall_64+0x4c/0xa0 [ 203.250486][ T6566] ? clear_bhb_loop+0x30/0x80 [ 203.255151][ T6566] ? clear_bhb_loop+0x30/0x80 [ 203.259813][ T6566] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 203.265688][ T6566] RIP: 0033:0x7f864b3a574e [ 203.270091][ T6566] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 203.290350][ T6566] RSP: 002b:00007f864a63fff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 203.298949][ T6566] RAX: ffffffffffffffda RBX: 00007f864a6406c0 RCX: 00007f864b3a574e [ 203.307095][ T6566] RDX: 0000000000000001 RSI: 00007f864a6400b0 RDI: 0000000000000005 [ 203.315072][ T6566] RBP: 00007f864a6400a0 R08: 0000000000000000 R09: 0000000000000000 [ 203.323148][ T6566] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 203.331643][ T6566] R13: 000000000000006e R14: 00007f864b589058 R15: 00007ffeb91066c8 [ 203.339707][ T6566] [ 203.418394][ T6570] FAULT_INJECTION: forcing a failure. [ 203.418394][ T6570] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 203.418394][ T6574] FAULT_INJECTION: forcing a failure. [ 203.418394][ T6574] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 203.418428][ T6574] CPU: 0 PID: 6574 Comm: syz.1.380 Not tainted syzkaller #0 [ 203.451963][ T6574] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 203.462034][ T6574] Call Trace: [ 203.465874][ T6574] [ 203.468807][ T6574] dump_stack_lvl+0x188/0x250 [ 203.473570][ T6574] ? show_regs_print_info+0x20/0x20 [ 203.478756][ T6574] ? load_image+0x400/0x400 [ 203.483342][ T6574] ? __lock_acquire+0x7d10/0x7d10 [ 203.488538][ T6574] should_fail+0x38c/0x4c0 [ 203.493092][ T6574] _copy_from_user+0x2e/0x170 [ 203.498142][ T6574] kstrtouint_from_user+0xd3/0x220 [ 203.503656][ T6574] ? kstrtol_from_user+0x2a0/0x2a0 [ 203.509038][ T6574] proc_fail_nth_write+0x8b/0x200 [ 203.514074][ T6574] ? proc_fail_nth_read+0x220/0x220 [ 203.519516][ T6574] ? common_file_perm+0x171/0x1c0 [ 203.525221][ T6574] ? proc_fail_nth_read+0x220/0x220 [ 203.530446][ T6574] vfs_write+0x30b/0xd60 [ 203.534683][ T6574] ? file_end_write+0x250/0x250 [ 203.539525][ T6574] ? __fget_files+0x40f/0x480 [ 203.544352][ T6574] ? mutex_lock_nested+0x17/0x20 [ 203.549679][ T6574] ? __fdget_pos+0x2bf/0x370 [ 203.554367][ T6574] ? ksys_write+0x71/0x260 [ 203.558813][ T6574] ksys_write+0x152/0x260 [ 203.563193][ T6574] ? __ia32_sys_read+0x80/0x80 [ 203.568099][ T6574] ? lockdep_hardirqs_on+0x94/0x140 [ 203.573323][ T6574] do_syscall_64+0x4c/0xa0 [ 203.577887][ T6574] ? clear_bhb_loop+0x30/0x80 [ 203.582924][ T6574] ? clear_bhb_loop+0x30/0x80 [ 203.587841][ T6574] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 203.594019][ T6574] RIP: 0033:0x7f3baf05d74e [ 203.598532][ T6574] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 203.618228][ T6574] RSP: 002b:00007f3bae318ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 203.626835][ T6574] RAX: ffffffffffffffda RBX: 00007f3bae3196c0 RCX: 00007f3baf05d74e [ 203.635026][ T6574] RDX: 0000000000000001 RSI: 00007f3bae3190b0 RDI: 0000000000000007 [ 203.643009][ T6574] RBP: 00007f3bae3190a0 R08: 0000000000000000 R09: 0000000000000000 [ 203.651174][ T6574] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 203.659156][ T6574] R13: 000000000000000b R14: 00007f3baf240f80 R15: 00007ffeabae9a08 [ 203.667149][ T6574] [ 203.675316][ T6570] CPU: 0 PID: 6570 Comm: syz.4.382 Not tainted syzkaller #0 [ 203.682662][ T6570] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 203.692818][ T6570] Call Trace: [ 203.696302][ T6570] [ 203.699244][ T6570] dump_stack_lvl+0x188/0x250 [ 203.703924][ T6570] ? show_regs_print_info+0x20/0x20 [ 203.709141][ T6570] ? load_image+0x400/0x400 [ 203.714021][ T6570] ? __lock_acquire+0x7d10/0x7d10 [ 203.719080][ T6570] should_fail+0x38c/0x4c0 [ 203.723525][ T6570] _copy_from_user+0x2e/0x170 [ 203.728593][ T6570] kstrtouint_from_user+0xd3/0x220 [ 203.733741][ T6570] ? kstrtol_from_user+0x2a0/0x2a0 [ 203.739403][ T6570] proc_fail_nth_write+0x8b/0x200 [ 203.744459][ T6570] ? proc_fail_nth_read+0x220/0x220 [ 203.749676][ T6570] ? common_file_perm+0x171/0x1c0 [ 203.754925][ T6570] ? proc_fail_nth_read+0x220/0x220 [ 203.760179][ T6570] vfs_write+0x30b/0xd60 [ 203.764423][ T6570] ? file_end_write+0x250/0x250 [ 203.769266][ T6570] ? __fget_files+0x40f/0x480 [ 203.774012][ T6570] ? mutex_lock_nested+0x17/0x20 [ 203.779032][ T6570] ? __fdget_pos+0x2bf/0x370 [ 203.783628][ T6570] ? ksys_write+0x71/0x260 [ 203.788366][ T6570] ksys_write+0x152/0x260 [ 203.792816][ T6570] ? __ia32_sys_read+0x80/0x80 [ 203.797605][ T6570] ? lockdep_hardirqs_on+0x94/0x140 [ 203.802928][ T6570] do_syscall_64+0x4c/0xa0 [ 203.807360][ T6570] ? clear_bhb_loop+0x30/0x80 [ 203.812131][ T6570] ? clear_bhb_loop+0x30/0x80 [ 203.816810][ T6570] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 203.822718][ T6570] RIP: 0033:0x7f16d038274e [ 203.827167][ T6570] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 203.846906][ T6570] RSP: 002b:00007f16cf63dff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 203.855341][ T6570] RAX: ffffffffffffffda RBX: 00007f16cf63e6c0 RCX: 00007f16d038274e [ 203.863890][ T6570] RDX: 0000000000000001 RSI: 00007f16cf63e0b0 RDI: 0000000000000007 [ 203.871889][ T6570] RBP: 00007f16cf63e0a0 R08: 0000000000000000 R09: 0000000000000000 [ 203.879892][ T6570] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 203.887891][ T6570] R13: 000000000000000b R14: 00007f16d0565f80 R15: 00007ffc849792c8 [ 203.895977][ T6570] [ 203.903119][ T6575] FAULT_INJECTION: forcing a failure. [ 203.903119][ T6575] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 203.919033][ T6572] FAULT_INJECTION: forcing a failure. [ 203.919033][ T6572] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 203.927869][ T6575] CPU: 0 PID: 6575 Comm: syz.3.378 Not tainted syzkaller #0 [ 203.939509][ T6575] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 203.949672][ T6575] Call Trace: [ 203.952970][ T6575] [ 203.955933][ T6575] dump_stack_lvl+0x188/0x250 [ 203.960646][ T6575] ? show_regs_print_info+0x20/0x20 [ 203.966471][ T6575] ? load_image+0x400/0x400 [ 203.971009][ T6575] ? __lock_acquire+0x7d10/0x7d10 [ 203.976070][ T6575] should_fail+0x38c/0x4c0 [ 203.981225][ T6575] _copy_from_user+0x2e/0x170 [ 203.986167][ T6575] kstrtouint_from_user+0xd3/0x220 [ 203.991361][ T6575] ? kstrtol_from_user+0x2a0/0x2a0 [ 203.996692][ T6575] proc_fail_nth_write+0x8b/0x200 [ 204.001942][ T6575] ? proc_fail_nth_read+0x220/0x220 [ 204.007200][ T6575] ? common_file_perm+0x171/0x1c0 [ 204.012257][ T6575] ? proc_fail_nth_read+0x220/0x220 [ 204.017467][ T6575] vfs_write+0x30b/0xd60 [ 204.021723][ T6575] ? file_end_write+0x250/0x250 [ 204.026597][ T6575] ? __fget_files+0x40f/0x480 [ 204.031338][ T6575] ? mutex_lock_nested+0x17/0x20 [ 204.036322][ T6575] ? __fdget_pos+0x2bf/0x370 [ 204.041145][ T6575] ? ksys_write+0x71/0x260 [ 204.045605][ T6575] ksys_write+0x152/0x260 [ 204.050059][ T6575] ? __ia32_sys_read+0x80/0x80 [ 204.054934][ T6575] ? lockdep_hardirqs_on+0x94/0x140 [ 204.060292][ T6575] do_syscall_64+0x4c/0xa0 [ 204.065232][ T6575] ? clear_bhb_loop+0x30/0x80 [ 204.070114][ T6575] ? clear_bhb_loop+0x30/0x80 [ 204.074910][ T6575] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 204.081025][ T6575] RIP: 0033:0x7fbad61c174e [ 204.085775][ T6575] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 204.105732][ T6575] RSP: 002b:00007fbad547cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 204.114452][ T6575] RAX: ffffffffffffffda RBX: 00007fbad547d6c0 RCX: 00007fbad61c174e [ 204.122615][ T6575] RDX: 0000000000000001 RSI: 00007fbad547d0b0 RDI: 0000000000000006 [ 204.130613][ T6575] RBP: 00007fbad547d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 204.138893][ T6575] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 204.147189][ T6575] R13: 000000000000000b R14: 00007fbad63a4f80 R15: 00007ffe2023ce08 [ 204.155381][ T6575] [ 204.158427][ T6572] CPU: 1 PID: 6572 Comm: syz.0.381 Not tainted syzkaller #0 [ 204.166209][ T6572] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 204.176552][ T6572] Call Trace: [ 204.179940][ T6572] [ 204.182978][ T6572] dump_stack_lvl+0x188/0x250 [ 204.187684][ T6572] ? show_regs_print_info+0x20/0x20 [ 204.193035][ T6572] ? load_image+0x400/0x400 [ 204.197567][ T6572] ? __lock_acquire+0x7d10/0x7d10 [ 204.202763][ T6572] should_fail+0x38c/0x4c0 [ 204.207258][ T6572] _copy_from_user+0x2e/0x170 [ 204.211955][ T6572] kstrtouint_from_user+0xd3/0x220 [ 204.217619][ T6572] ? kstrtol_from_user+0x2a0/0x2a0 [ 204.222958][ T6572] proc_fail_nth_write+0x8b/0x200 [ 204.228015][ T6572] ? proc_fail_nth_read+0x220/0x220 [ 204.233617][ T6572] ? common_file_perm+0x171/0x1c0 [ 204.238679][ T6572] ? proc_fail_nth_read+0x220/0x220 [ 204.244001][ T6572] vfs_write+0x30b/0xd60 [ 204.248409][ T6572] ? file_end_write+0x250/0x250 [ 204.253285][ T6572] ? __fget_files+0x40f/0x480 [ 204.258066][ T6572] ? mutex_lock_nested+0x17/0x20 [ 204.263010][ T6572] ? __fdget_pos+0x2bf/0x370 [ 204.267591][ T6572] ? ksys_write+0x71/0x260 [ 204.272006][ T6572] ksys_write+0x152/0x260 [ 204.276335][ T6572] ? __ia32_sys_read+0x80/0x80 [ 204.281382][ T6572] ? lockdep_hardirqs_on+0x94/0x140 [ 204.286602][ T6572] do_syscall_64+0x4c/0xa0 [ 204.291025][ T6572] ? clear_bhb_loop+0x30/0x80 [ 204.295734][ T6572] ? clear_bhb_loop+0x30/0x80 [ 204.300494][ T6572] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 204.306400][ T6572] RIP: 0033:0x7f864b3a574e [ 204.310806][ T6572] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 204.330485][ T6572] RSP: 002b:00007f864a660ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 204.339230][ T6572] RAX: ffffffffffffffda RBX: 00007f864a6616c0 RCX: 00007f864b3a574e [ 204.347210][ T6572] RDX: 0000000000000001 RSI: 00007f864a6610b0 RDI: 0000000000000007 [ 204.355171][ T6572] RBP: 00007f864a6610a0 R08: 0000000000000000 R09: 0000000000000000 [ 204.363224][ T6572] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 204.371185][ T6572] R13: 000000000000000b R14: 00007f864b588f80 R15: 00007ffeb91066c8 [ 204.379174][ T6572] [ 204.385478][ T6577] FAULT_INJECTION: forcing a failure. [ 204.385478][ T6577] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 204.405306][ T6577] CPU: 1 PID: 6577 Comm: syz.2.379 Not tainted syzkaller #0 [ 204.412742][ T6577] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 204.422805][ T6577] Call Trace: [ 204.426122][ T6577] [ 204.429428][ T6577] dump_stack_lvl+0x188/0x250 [ 204.434131][ T6577] ? show_regs_print_info+0x20/0x20 [ 204.439329][ T6577] ? load_image+0x400/0x400 [ 204.443913][ T6577] ? __lock_acquire+0x7d10/0x7d10 [ 204.449031][ T6577] should_fail+0x38c/0x4c0 [ 204.453534][ T6577] _copy_from_user+0x2e/0x170 [ 204.458290][ T6577] kstrtouint_from_user+0xd3/0x220 [ 204.463420][ T6577] ? kstrtol_from_user+0x2a0/0x2a0 [ 204.468969][ T6577] proc_fail_nth_write+0x8b/0x200 [ 204.474256][ T6577] ? proc_fail_nth_read+0x220/0x220 [ 204.479476][ T6577] ? common_file_perm+0x171/0x1c0 [ 204.484510][ T6577] ? proc_fail_nth_read+0x220/0x220 [ 204.489714][ T6577] vfs_write+0x30b/0xd60 [ 204.494007][ T6577] ? file_end_write+0x250/0x250 [ 204.498965][ T6577] ? __fget_files+0x40f/0x480 [ 204.503663][ T6577] ? mutex_lock_nested+0x17/0x20 [ 204.508642][ T6577] ? __fdget_pos+0x2bf/0x370 [ 204.513345][ T6577] ? ksys_write+0x71/0x260 [ 204.517758][ T6577] ksys_write+0x152/0x260 [ 204.522107][ T6577] ? __ia32_sys_read+0x80/0x80 [ 204.526973][ T6577] ? lockdep_hardirqs_on+0x94/0x140 [ 204.532184][ T6577] do_syscall_64+0x4c/0xa0 [ 204.536618][ T6577] ? clear_bhb_loop+0x30/0x80 [ 204.541308][ T6577] ? clear_bhb_loop+0x30/0x80 [ 204.546090][ T6577] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 204.551987][ T6577] RIP: 0033:0x7fbdb3b2c74e [ 204.556401][ T6577] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 204.576127][ T6577] RSP: 002b:00007fbdb2de7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 204.584892][ T6577] RAX: ffffffffffffffda RBX: 00007fbdb2de86c0 RCX: 00007fbdb3b2c74e [ 204.593160][ T6577] RDX: 0000000000000001 RSI: 00007fbdb2de80b0 RDI: 0000000000000007 [ 204.601128][ T6577] RBP: 00007fbdb2de80a0 R08: 0000000000000000 R09: 0000000000000000 [ 204.609099][ T6577] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 204.617080][ T6577] R13: 000000000000000b R14: 00007fbdb3d0ff80 R15: 00007ffc8d3c7768 [ 204.625165][ T6577] [ 204.632356][ T6581] FAULT_INJECTION: forcing a failure. [ 204.632356][ T6581] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 204.663541][ T6580] FAULT_INJECTION: forcing a failure. [ 204.663541][ T6580] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 204.678286][ T6585] FAULT_INJECTION: forcing a failure. [ 204.678286][ T6585] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 204.694618][ T6587] FAULT_INJECTION: forcing a failure. [ 204.694618][ T6587] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 204.703514][ T6581] CPU: 1 PID: 6581 Comm: syz.4.384 Not tainted syzkaller #0 [ 204.715020][ T6581] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 204.725081][ T6581] Call Trace: [ 204.728349][ T6581] [ 204.731271][ T6581] dump_stack_lvl+0x188/0x250 [ 204.735980][ T6581] ? show_regs_print_info+0x20/0x20 [ 204.741266][ T6581] ? load_image+0x400/0x400 [ 204.745762][ T6581] ? __lock_acquire+0x7d10/0x7d10 [ 204.750811][ T6581] should_fail+0x38c/0x4c0 [ 204.755351][ T6581] _copy_from_user+0x2e/0x170 [ 204.760055][ T6581] kstrtouint_from_user+0xd3/0x220 [ 204.765187][ T6581] ? kstrtol_from_user+0x2a0/0x2a0 [ 204.770437][ T6581] proc_fail_nth_write+0x8b/0x200 [ 204.775463][ T6581] ? proc_fail_nth_read+0x220/0x220 [ 204.780867][ T6581] ? common_file_perm+0x171/0x1c0 [ 204.785913][ T6581] ? proc_fail_nth_read+0x220/0x220 [ 204.791114][ T6581] vfs_write+0x30b/0xd60 [ 204.795351][ T6581] ? file_end_write+0x250/0x250 [ 204.800189][ T6581] ? __fget_files+0x40f/0x480 [ 204.804870][ T6581] ? mutex_lock_nested+0x17/0x20 [ 204.809800][ T6581] ? __fdget_pos+0x2bf/0x370 [ 204.814411][ T6581] ? ksys_write+0x71/0x260 [ 204.818832][ T6581] ksys_write+0x152/0x260 [ 204.823468][ T6581] ? __ia32_sys_read+0x80/0x80 [ 204.828629][ T6581] ? lockdep_hardirqs_on+0x94/0x140 [ 204.834285][ T6581] do_syscall_64+0x4c/0xa0 [ 204.838832][ T6581] ? clear_bhb_loop+0x30/0x80 [ 204.843863][ T6581] ? clear_bhb_loop+0x30/0x80 [ 204.848690][ T6581] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 204.854909][ T6581] RIP: 0033:0x7f16d038274e [ 204.859460][ T6581] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 204.879174][ T6581] RSP: 002b:00007f16cf63dff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 204.887712][ T6581] RAX: ffffffffffffffda RBX: 00007f16cf63e6c0 RCX: 00007f16d038274e [ 204.895722][ T6581] RDX: 0000000000000001 RSI: 00007f16cf63e0b0 RDI: 0000000000000006 [ 204.903875][ T6581] RBP: 00007f16cf63e0a0 R08: 0000000000000000 R09: 0000000000000000 [ 204.911928][ T6581] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 204.919889][ T6581] R13: 000000000000000b R14: 00007f16d0565f80 R15: 00007ffc849792c8 [ 204.927865][ T6581] [ 204.932869][ T6585] CPU: 0 PID: 6585 Comm: syz.1.385 Not tainted syzkaller #0 [ 204.940191][ T6585] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 204.950260][ T6585] Call Trace: [ 204.953559][ T6585] [ 204.956516][ T6585] dump_stack_lvl+0x188/0x250 [ 204.961211][ T6585] ? show_regs_print_info+0x20/0x20 [ 204.966409][ T6585] ? load_image+0x400/0x400 [ 204.970910][ T6585] ? __lock_acquire+0x7d10/0x7d10 [ 204.975939][ T6585] should_fail+0x38c/0x4c0 [ 204.980526][ T6585] _copy_from_user+0x2e/0x170 [ 204.985236][ T6585] kstrtouint_from_user+0xd3/0x220 [ 204.990479][ T6585] ? kstrtol_from_user+0x2a0/0x2a0 [ 204.995804][ T6585] proc_fail_nth_write+0x8b/0x200 [ 205.000848][ T6585] ? proc_fail_nth_read+0x220/0x220 [ 205.003638][ T6589] FAULT_INJECTION: forcing a failure. [ 205.003638][ T6589] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 205.006066][ T6585] ? common_file_perm+0x171/0x1c0 [ 205.024174][ T6585] ? proc_fail_nth_read+0x220/0x220 [ 205.029501][ T6585] vfs_write+0x30b/0xd60 [ 205.033778][ T6585] ? file_end_write+0x250/0x250 [ 205.039048][ T6585] ? __fget_files+0x40f/0x480 [ 205.043750][ T6585] ? mutex_lock_nested+0x17/0x20 [ 205.048710][ T6585] ? __fdget_pos+0x2bf/0x370 [ 205.053312][ T6585] ? ksys_write+0x71/0x260 [ 205.057748][ T6585] ksys_write+0x152/0x260 [ 205.062097][ T6585] ? __ia32_sys_read+0x80/0x80 [ 205.067133][ T6585] ? lockdep_hardirqs_on+0x94/0x140 [ 205.072349][ T6585] do_syscall_64+0x4c/0xa0 [ 205.076781][ T6585] ? clear_bhb_loop+0x30/0x80 [ 205.081610][ T6585] ? clear_bhb_loop+0x30/0x80 [ 205.086318][ T6585] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 205.092236][ T6585] RIP: 0033:0x7f3baf05d74e [ 205.097286][ T6585] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 205.117012][ T6585] RSP: 002b:00007f3bae318ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 205.125448][ T6585] RAX: ffffffffffffffda RBX: 00007f3bae3196c0 RCX: 00007f3baf05d74e [ 205.133458][ T6585] RDX: 0000000000000001 RSI: 00007f3bae3190b0 RDI: 0000000000000007 [ 205.141434][ T6585] RBP: 00007f3bae3190a0 R08: 0000000000000000 R09: 0000000000000000 [ 205.149594][ T6585] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 205.157573][ T6585] R13: 000000000000000b R14: 00007f3baf240f80 R15: 00007ffeabae9a08 [ 205.165576][ T6585] [ 205.168605][ T6587] CPU: 1 PID: 6587 Comm: syz.2.386 Not tainted syzkaller #0 [ 205.176002][ T6587] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 205.186167][ T6587] Call Trace: [ 205.189445][ T6587] [ 205.192370][ T6587] dump_stack_lvl+0x188/0x250 [ 205.197057][ T6587] ? show_regs_print_info+0x20/0x20 [ 205.202254][ T6587] ? load_image+0x400/0x400 [ 205.206750][ T6587] ? __lock_acquire+0x7d10/0x7d10 [ 205.211776][ T6587] should_fail+0x38c/0x4c0 [ 205.216222][ T6587] _copy_from_user+0x2e/0x170 [ 205.220900][ T6587] kstrtouint_from_user+0xd3/0x220 [ 205.226058][ T6587] ? kstrtol_from_user+0x2a0/0x2a0 [ 205.231702][ T6587] proc_fail_nth_write+0x8b/0x200 [ 205.236740][ T6587] ? proc_fail_nth_read+0x220/0x220 [ 205.241947][ T6587] ? common_file_perm+0x171/0x1c0 [ 205.247187][ T6587] ? proc_fail_nth_read+0x220/0x220 [ 205.252493][ T6587] vfs_write+0x30b/0xd60 [ 205.256844][ T6587] ? file_end_write+0x250/0x250 [ 205.261712][ T6587] ? __fget_files+0x40f/0x480 [ 205.266384][ T6587] ? mutex_lock_nested+0x17/0x20 [ 205.271428][ T6587] ? __fdget_pos+0x2bf/0x370 [ 205.276042][ T6587] ? ksys_write+0x71/0x260 [ 205.280491][ T6587] ksys_write+0x152/0x260 [ 205.284833][ T6587] ? __ia32_sys_read+0x80/0x80 [ 205.289626][ T6587] ? lockdep_hardirqs_on+0x94/0x140 [ 205.294844][ T6587] do_syscall_64+0x4c/0xa0 [ 205.299392][ T6587] ? clear_bhb_loop+0x30/0x80 [ 205.304079][ T6587] ? clear_bhb_loop+0x30/0x80 [ 205.308776][ T6587] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 205.314686][ T6587] RIP: 0033:0x7fbdb3b2c74e [ 205.319116][ T6587] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 205.338727][ T6587] RSP: 002b:00007fbdb2de7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 205.347158][ T6587] RAX: ffffffffffffffda RBX: 00007fbdb2de86c0 RCX: 00007fbdb3b2c74e [ 205.355148][ T6587] RDX: 0000000000000001 RSI: 00007fbdb2de80b0 RDI: 0000000000000007 [ 205.363145][ T6587] RBP: 00007fbdb2de80a0 R08: 0000000000000000 R09: 0000000000000000 [ 205.371134][ T6587] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 205.379206][ T6587] R13: 000000000000000b R14: 00007fbdb3d0ff80 R15: 00007ffc8d3c7768 [ 205.387200][ T6587] [ 205.390229][ T6580] CPU: 0 PID: 6580 Comm: syz.3.383 Not tainted syzkaller #0 [ 205.397539][ T6580] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 205.407801][ T6580] Call Trace: [ 205.411094][ T6580] [ 205.414035][ T6580] dump_stack_lvl+0x188/0x250 [ 205.418729][ T6580] ? show_regs_print_info+0x20/0x20 [ 205.423941][ T6580] ? load_image+0x400/0x400 [ 205.428496][ T6580] ? __lock_acquire+0x7d10/0x7d10 [ 205.433536][ T6580] should_fail+0x38c/0x4c0 [ 205.438136][ T6580] _copy_from_user+0x2e/0x170 [ 205.442832][ T6580] kstrtouint_from_user+0xd3/0x220 [ 205.447962][ T6580] ? kstrtol_from_user+0x2a0/0x2a0 [ 205.453107][ T6580] proc_fail_nth_write+0x8b/0x200 [ 205.458163][ T6580] ? proc_fail_nth_read+0x220/0x220 [ 205.463385][ T6580] ? common_file_perm+0x171/0x1c0 [ 205.468427][ T6580] ? proc_fail_nth_read+0x220/0x220 [ 205.473657][ T6580] vfs_write+0x30b/0xd60 [ 205.477914][ T6580] ? file_end_write+0x250/0x250 [ 205.482774][ T6580] ? __fget_files+0x40f/0x480 [ 205.487463][ T6580] ? mutex_lock_nested+0x17/0x20 [ 205.492429][ T6580] ? __fdget_pos+0x2bf/0x370 [ 205.497037][ T6580] ? ksys_write+0x71/0x260 [ 205.501483][ T6580] ksys_write+0x152/0x260 [ 205.505815][ T6580] ? __ia32_sys_read+0x80/0x80 [ 205.510581][ T6580] ? lockdep_hardirqs_on+0x94/0x140 [ 205.515790][ T6580] do_syscall_64+0x4c/0xa0 [ 205.520212][ T6580] ? clear_bhb_loop+0x30/0x80 [ 205.524902][ T6580] ? clear_bhb_loop+0x30/0x80 [ 205.529670][ T6580] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 205.535577][ T6580] RIP: 0033:0x7fbad61c174e [ 205.540012][ T6580] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 205.559719][ T6580] RSP: 002b:00007fbad547cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 205.568164][ T6580] RAX: ffffffffffffffda RBX: 00007fbad547d6c0 RCX: 00007fbad61c174e [ 205.576148][ T6580] RDX: 0000000000000001 RSI: 00007fbad547d0b0 RDI: 0000000000000008 [ 205.584138][ T6580] RBP: 00007fbad547d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 205.592247][ T6580] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 205.600343][ T6580] R13: 000000000000000b R14: 00007fbad63a4f80 R15: 00007ffe2023ce08 [ 205.608357][ T6580] [ 205.628086][ T6589] CPU: 0 PID: 6589 Comm: syz.0.387 Not tainted syzkaller #0 [ 205.635533][ T6589] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 205.645864][ T6589] Call Trace: [ 205.649153][ T6589] [ 205.652176][ T6589] dump_stack_lvl+0x188/0x250 [ 205.656878][ T6589] ? show_regs_print_info+0x20/0x20 [ 205.662072][ T6589] ? load_image+0x400/0x400 [ 205.666671][ T6589] ? __lock_acquire+0x7d10/0x7d10 [ 205.671954][ T6589] should_fail+0x38c/0x4c0 [ 205.676393][ T6589] _copy_from_user+0x2e/0x170 [ 205.681103][ T6589] kstrtouint_from_user+0xd3/0x220 [ 205.686236][ T6589] ? kstrtol_from_user+0x2a0/0x2a0 [ 205.691357][ T6589] proc_fail_nth_write+0x8b/0x200 [ 205.696382][ T6589] ? proc_fail_nth_read+0x220/0x220 [ 205.701578][ T6589] ? common_file_perm+0x171/0x1c0 [ 205.706772][ T6589] ? proc_fail_nth_read+0x220/0x220 [ 205.712143][ T6589] vfs_write+0x30b/0xd60 [ 205.716379][ T6589] ? file_end_write+0x250/0x250 [ 205.721221][ T6589] ? __fget_files+0x40f/0x480 [ 205.725983][ T6589] ? mutex_lock_nested+0x17/0x20 [ 205.730911][ T6589] ? __fdget_pos+0x2bf/0x370 [ 205.735577][ T6589] ? ksys_write+0x71/0x260 [ 205.739995][ T6589] ksys_write+0x152/0x260 [ 205.744321][ T6589] ? __ia32_sys_read+0x80/0x80 [ 205.749090][ T6589] ? lockdep_hardirqs_on+0x94/0x140 [ 205.754307][ T6589] do_syscall_64+0x4c/0xa0 [ 205.758744][ T6589] ? clear_bhb_loop+0x30/0x80 [ 205.763429][ T6589] ? clear_bhb_loop+0x30/0x80 [ 205.768107][ T6589] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 205.774095][ T6589] RIP: 0033:0x7f864b3a574e [ 205.778627][ T6589] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 205.798248][ T6589] RSP: 002b:00007f864a660ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 205.806682][ T6589] RAX: ffffffffffffffda RBX: 00007f864a6616c0 RCX: 00007f864b3a574e [ 205.814880][ T6589] RDX: 0000000000000001 RSI: 00007f864a6610b0 RDI: 0000000000000007 [ 205.823314][ T6589] RBP: 00007f864a6610a0 R08: 0000000000000000 R09: 0000000000000000 [ 205.831328][ T6589] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 205.839314][ T6589] R13: 000000000000000b R14: 00007f864b588f80 R15: 00007ffeb91066c8 [ 205.847323][ T6589] [ 205.903027][ T6591] FAULT_INJECTION: forcing a failure. [ 205.903027][ T6591] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 205.939203][ T6591] CPU: 0 PID: 6591 Comm: syz.4.388 Not tainted syzkaller #0 2026/04/25 10:13:43 executed programs: 384 [ 205.946548][ T6591] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 205.956633][ T6591] Call Trace: [ 205.959975][ T6591] [ 205.962917][ T6591] dump_stack_lvl+0x188/0x250 [ 205.967616][ T6591] ? show_regs_print_info+0x20/0x20 [ 205.972824][ T6591] ? load_image+0x400/0x400 [ 205.977331][ T6591] ? __lock_acquire+0x7d10/0x7d10 [ 205.982367][ T6591] should_fail+0x38c/0x4c0 [ 205.986807][ T6591] _copy_from_user+0x2e/0x170 [ 205.991508][ T6591] kstrtouint_from_user+0xd3/0x220 [ 205.996722][ T6591] ? kstrtol_from_user+0x2a0/0x2a0 [ 206.001863][ T6591] proc_fail_nth_write+0x8b/0x200 [ 206.006890][ T6591] ? proc_fail_nth_read+0x220/0x220 [ 206.012084][ T6591] ? common_file_perm+0x171/0x1c0 [ 206.017193][ T6591] ? proc_fail_nth_read+0x220/0x220 [ 206.022516][ T6591] vfs_write+0x30b/0xd60 [ 206.026780][ T6591] ? file_end_write+0x250/0x250 [ 206.031652][ T6591] ? __fget_files+0x40f/0x480 [ 206.036446][ T6591] ? mutex_lock_nested+0x17/0x20 [ 206.041399][ T6591] ? __fdget_pos+0x2bf/0x370 [ 206.046071][ T6591] ? ksys_write+0x71/0x260 [ 206.050532][ T6591] ksys_write+0x152/0x260 [ 206.054883][ T6591] ? __ia32_sys_read+0x80/0x80 [ 206.059730][ T6591] ? lockdep_hardirqs_on+0x94/0x140 [ 206.064951][ T6591] do_syscall_64+0x4c/0xa0 [ 206.069481][ T6591] ? clear_bhb_loop+0x30/0x80 [ 206.074158][ T6591] ? clear_bhb_loop+0x30/0x80 [ 206.078831][ T6591] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 206.084732][ T6591] RIP: 0033:0x7f16d038274e [ 206.089139][ T6591] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 206.109008][ T6591] RSP: 002b:00007f16cf63dff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 206.117531][ T6591] RAX: ffffffffffffffda RBX: 00007f16cf63e6c0 RCX: 00007f16d038274e [ 206.125509][ T6591] RDX: 0000000000000001 RSI: 00007f16cf63e0b0 RDI: 0000000000000006 [ 206.133468][ T6591] RBP: 00007f16cf63e0a0 R08: 0000000000000000 R09: 0000000000000000 [ 206.141455][ T6591] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 206.149458][ T6591] R13: 000000000000000b R14: 00007f16d0565f80 R15: 00007ffc849792c8 [ 206.157446][ T6591] [ 206.223888][ T6594] FAULT_INJECTION: forcing a failure. [ 206.223888][ T6594] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 206.252789][ T6594] CPU: 1 PID: 6594 Comm: syz.0.389 Not tainted syzkaller #0 [ 206.260218][ T6594] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 206.270298][ T6594] Call Trace: [ 206.273598][ T6594] [ 206.276520][ T6594] dump_stack_lvl+0x188/0x250 [ 206.281203][ T6594] ? show_regs_print_info+0x20/0x20 [ 206.286401][ T6594] ? load_image+0x400/0x400 [ 206.290899][ T6594] ? __lock_acquire+0x7d10/0x7d10 [ 206.296093][ T6594] should_fail+0x38c/0x4c0 [ 206.300514][ T6594] _copy_from_user+0x2e/0x170 [ 206.305270][ T6594] kstrtouint_from_user+0xd3/0x220 [ 206.310371][ T6594] ? kstrtol_from_user+0x2a0/0x2a0 [ 206.315489][ T6594] proc_fail_nth_write+0x8b/0x200 [ 206.320514][ T6594] ? proc_fail_nth_read+0x220/0x220 [ 206.325700][ T6594] ? common_file_perm+0x171/0x1c0 [ 206.330712][ T6594] ? proc_fail_nth_read+0x220/0x220 [ 206.335898][ T6594] vfs_write+0x30b/0xd60 [ 206.340135][ T6594] ? file_end_write+0x250/0x250 [ 206.344975][ T6594] ? __fget_files+0x40f/0x480 [ 206.349739][ T6594] ? mutex_lock_nested+0x17/0x20 [ 206.354668][ T6594] ? __fdget_pos+0x2bf/0x370 [ 206.359339][ T6594] ? ksys_write+0x71/0x260 [ 206.363743][ T6594] ksys_write+0x152/0x260 [ 206.368063][ T6594] ? __ia32_sys_read+0x80/0x80 [ 206.372817][ T6594] ? lockdep_hardirqs_on+0x94/0x140 [ 206.378015][ T6594] do_syscall_64+0x4c/0xa0 [ 206.382414][ T6594] ? clear_bhb_loop+0x30/0x80 [ 206.387076][ T6594] ? clear_bhb_loop+0x30/0x80 [ 206.391767][ T6594] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 206.397713][ T6594] RIP: 0033:0x7f864b3a574e [ 206.402128][ T6594] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 206.421830][ T6594] RSP: 002b:00007f864a660ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 206.430236][ T6594] RAX: ffffffffffffffda RBX: 00007f864a6616c0 RCX: 00007f864b3a574e [ 206.438292][ T6594] RDX: 0000000000000001 RSI: 00007f864a6610b0 RDI: 0000000000000007 [ 206.446251][ T6594] RBP: 00007f864a6610a0 R08: 0000000000000000 R09: 0000000000000000 [ 206.454214][ T6594] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 206.462342][ T6594] R13: 000000000000000b R14: 00007f864b588f80 R15: 00007ffeb91066c8 [ 206.470315][ T6594] [ 206.476930][ T6600] FAULT_INJECTION: forcing a failure. [ 206.476930][ T6600] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 206.491935][ T6596] FAULT_INJECTION: forcing a failure. [ 206.491935][ T6596] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 206.506087][ T6601] FAULT_INJECTION: forcing a failure. [ 206.506087][ T6601] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 206.520049][ T6600] CPU: 0 PID: 6600 Comm: syz.2.392 Not tainted syzkaller #0 [ 206.527377][ T6600] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 206.537447][ T6600] Call Trace: [ 206.540734][ T6600] [ 206.543763][ T6600] dump_stack_lvl+0x188/0x250 [ 206.548564][ T6600] ? show_regs_print_info+0x20/0x20 [ 206.553878][ T6600] ? load_image+0x400/0x400 [ 206.558410][ T6600] ? __lock_acquire+0x7d10/0x7d10 [ 206.563445][ T6600] should_fail+0x38c/0x4c0 [ 206.567973][ T6600] _copy_from_user+0x2e/0x170 [ 206.572684][ T6600] kstrtouint_from_user+0xd3/0x220 [ 206.577840][ T6600] ? kstrtol_from_user+0x2a0/0x2a0 [ 206.583161][ T6600] proc_fail_nth_write+0x8b/0x200 [ 206.588211][ T6600] ? proc_fail_nth_read+0x220/0x220 [ 206.593527][ T6600] ? common_file_perm+0x171/0x1c0 [ 206.598576][ T6600] ? proc_fail_nth_read+0x220/0x220 [ 206.603783][ T6600] vfs_write+0x30b/0xd60 [ 206.608115][ T6600] ? file_end_write+0x250/0x250 [ 206.612977][ T6600] ? __fget_files+0x40f/0x480 [ 206.617662][ T6600] ? mutex_lock_nested+0x17/0x20 [ 206.622595][ T6600] ? __fdget_pos+0x2bf/0x370 [ 206.627174][ T6600] ? ksys_write+0x71/0x260 [ 206.631579][ T6600] ksys_write+0x152/0x260 [ 206.635906][ T6600] ? __ia32_sys_read+0x80/0x80 [ 206.640656][ T6600] ? lockdep_hardirqs_on+0x94/0x140 [ 206.645845][ T6600] do_syscall_64+0x4c/0xa0 [ 206.650256][ T6600] ? clear_bhb_loop+0x30/0x80 [ 206.654918][ T6600] ? clear_bhb_loop+0x30/0x80 [ 206.659588][ T6600] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 206.665491][ T6600] RIP: 0033:0x7fbdb3b2c74e [ 206.669898][ T6600] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 206.689575][ T6600] RSP: 002b:00007fbdb2de7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 206.698065][ T6600] RAX: ffffffffffffffda RBX: 00007fbdb2de86c0 RCX: 00007fbdb3b2c74e [ 206.706305][ T6600] RDX: 0000000000000001 RSI: 00007fbdb2de80b0 RDI: 0000000000000007 [ 206.714380][ T6600] RBP: 00007fbdb2de80a0 R08: 0000000000000000 R09: 0000000000000000 [ 206.722363][ T6600] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 206.730355][ T6600] R13: 000000000000000b R14: 00007fbdb3d0ff80 R15: 00007ffc8d3c7768 [ 206.738339][ T6600] [ 206.745199][ T6605] FAULT_INJECTION: forcing a failure. [ 206.745199][ T6605] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 206.753182][ T6596] CPU: 0 PID: 6596 Comm: syz.3.390 Not tainted syzkaller #0 [ 206.765720][ T6596] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 206.775876][ T6596] Call Trace: [ 206.779191][ T6596] [ 206.782217][ T6596] dump_stack_lvl+0x188/0x250 [ 206.786900][ T6596] ? show_regs_print_info+0x20/0x20 [ 206.792095][ T6596] ? load_image+0x400/0x400 [ 206.797304][ T6596] ? __lock_acquire+0x7d10/0x7d10 [ 206.802360][ T6596] should_fail+0x38c/0x4c0 [ 206.806900][ T6596] _copy_from_user+0x2e/0x170 [ 206.811619][ T6596] kstrtouint_from_user+0xd3/0x220 [ 206.816758][ T6596] ? kstrtol_from_user+0x2a0/0x2a0 [ 206.821997][ T6596] proc_fail_nth_write+0x8b/0x200 [ 206.827050][ T6596] ? proc_fail_nth_read+0x220/0x220 [ 206.832270][ T6596] ? common_file_perm+0x171/0x1c0 [ 206.837311][ T6596] ? proc_fail_nth_read+0x220/0x220 [ 206.842519][ T6596] vfs_write+0x30b/0xd60 [ 206.846933][ T6596] ? file_end_write+0x250/0x250 [ 206.851786][ T6596] ? __fget_files+0x40f/0x480 [ 206.856558][ T6596] ? mutex_lock_nested+0x17/0x20 [ 206.861547][ T6596] ? __fdget_pos+0x2bf/0x370 [ 206.866121][ T6596] ? ksys_write+0x71/0x260 [ 206.870641][ T6596] ksys_write+0x152/0x260 [ 206.875006][ T6596] ? __ia32_sys_read+0x80/0x80 [ 206.879788][ T6596] ? lockdep_hardirqs_on+0x94/0x140 [ 206.884990][ T6596] do_syscall_64+0x4c/0xa0 [ 206.889483][ T6596] ? clear_bhb_loop+0x30/0x80 [ 206.894145][ T6596] ? clear_bhb_loop+0x30/0x80 [ 206.898898][ T6596] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 206.904793][ T6596] RIP: 0033:0x7fbad61c174e [ 206.909211][ T6596] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 206.929162][ T6596] RSP: 002b:00007fbad547cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 206.937598][ T6596] RAX: ffffffffffffffda RBX: 00007fbad547d6c0 RCX: 00007fbad61c174e [ 206.945680][ T6596] RDX: 0000000000000001 RSI: 00007fbad547d0b0 RDI: 0000000000000007 [ 206.953779][ T6596] RBP: 00007fbad547d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 206.961742][ T6596] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 206.969711][ T6596] R13: 000000000000000b R14: 00007fbad63a4f80 R15: 00007ffe2023ce08 [ 206.977771][ T6596] [ 206.983683][ T6601] CPU: 0 PID: 6601 Comm: syz.1.393 Not tainted syzkaller #0 [ 206.991004][ T6601] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 207.001287][ T6601] Call Trace: [ 207.004583][ T6601] [ 207.007538][ T6601] dump_stack_lvl+0x188/0x250 [ 207.012229][ T6601] ? show_regs_print_info+0x20/0x20 [ 207.017529][ T6601] ? load_image+0x400/0x400 [ 207.022054][ T6601] ? __lock_acquire+0x7d10/0x7d10 [ 207.027219][ T6601] should_fail+0x38c/0x4c0 [ 207.031675][ T6601] _copy_from_user+0x2e/0x170 [ 207.036588][ T6601] kstrtouint_from_user+0xd3/0x220 [ 207.041713][ T6601] ? kstrtol_from_user+0x2a0/0x2a0 [ 207.046849][ T6601] proc_fail_nth_write+0x8b/0x200 [ 207.051885][ T6601] ? proc_fail_nth_read+0x220/0x220 [ 207.057084][ T6601] ? common_file_perm+0x171/0x1c0 [ 207.062111][ T6601] ? proc_fail_nth_read+0x220/0x220 [ 207.067314][ T6601] vfs_write+0x30b/0xd60 [ 207.071576][ T6601] ? file_end_write+0x250/0x250 [ 207.075676][ T6609] FAULT_INJECTION: forcing a failure. [ 207.075676][ T6609] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 207.076448][ T6601] ? __fget_files+0x40f/0x480 [ 207.094127][ T6601] ? mutex_lock_nested+0x17/0x20 [ 207.099085][ T6601] ? __fdget_pos+0x2bf/0x370 [ 207.103781][ T6601] ? ksys_write+0x71/0x260 [ 207.108226][ T6601] ksys_write+0x152/0x260 [ 207.112753][ T6601] ? __ia32_sys_read+0x80/0x80 [ 207.117538][ T6601] ? lockdep_hardirqs_on+0x94/0x140 [ 207.122763][ T6601] do_syscall_64+0x4c/0xa0 [ 207.127249][ T6601] ? clear_bhb_loop+0x30/0x80 [ 207.131927][ T6601] ? clear_bhb_loop+0x30/0x80 [ 207.136704][ T6601] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 207.142714][ T6601] RIP: 0033:0x7f3baf05d74e [ 207.147341][ T6601] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 207.167127][ T6601] RSP: 002b:00007f3bae318ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 207.175810][ T6601] RAX: ffffffffffffffda RBX: 00007f3bae3196c0 RCX: 00007f3baf05d74e [ 207.183806][ T6601] RDX: 0000000000000001 RSI: 00007f3bae3190b0 RDI: 0000000000000007 [ 207.191782][ T6601] RBP: 00007f3bae3190a0 R08: 0000000000000000 R09: 0000000000000000 [ 207.199755][ T6601] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 207.207735][ T6601] R13: 000000000000000b R14: 00007f3baf240f80 R15: 00007ffeabae9a08 [ 207.214610][ T6610] FAULT_INJECTION: forcing a failure. [ 207.214610][ T6610] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 207.215723][ T6601] [ 207.240223][ T6605] CPU: 0 PID: 6605 Comm: syz.0.394 Not tainted syzkaller #0 [ 207.247791][ T6605] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 207.257956][ T6605] Call Trace: [ 207.261244][ T6605] [ 207.264163][ T6605] dump_stack_lvl+0x188/0x250 [ 207.268834][ T6605] ? show_regs_print_info+0x20/0x20 [ 207.274016][ T6605] ? load_image+0x400/0x400 [ 207.278506][ T6605] ? __lock_acquire+0x7d10/0x7d10 [ 207.283531][ T6605] should_fail+0x38c/0x4c0 [ 207.287963][ T6605] _copy_from_user+0x2e/0x170 [ 207.292626][ T6605] kstrtouint_from_user+0xd3/0x220 [ 207.297726][ T6605] ? kstrtol_from_user+0x2a0/0x2a0 [ 207.302835][ T6605] proc_fail_nth_write+0x8b/0x200 [ 207.307847][ T6605] ? proc_fail_nth_read+0x220/0x220 [ 207.313061][ T6605] ? common_file_perm+0x171/0x1c0 [ 207.318079][ T6605] ? proc_fail_nth_read+0x220/0x220 [ 207.323295][ T6605] vfs_write+0x30b/0xd60 [ 207.327560][ T6605] ? file_end_write+0x250/0x250 [ 207.332476][ T6605] ? __fget_files+0x40f/0x480 [ 207.337151][ T6605] ? mutex_lock_nested+0x17/0x20 [ 207.342163][ T6605] ? __fdget_pos+0x2bf/0x370 [ 207.346733][ T6605] ? ksys_write+0x71/0x260 [ 207.351137][ T6605] ksys_write+0x152/0x260 [ 207.355536][ T6605] ? __ia32_sys_read+0x80/0x80 [ 207.360289][ T6605] ? lockdep_hardirqs_on+0x94/0x140 [ 207.365500][ T6605] do_syscall_64+0x4c/0xa0 [ 207.369995][ T6605] ? clear_bhb_loop+0x30/0x80 [ 207.374741][ T6605] ? clear_bhb_loop+0x30/0x80 [ 207.379404][ T6605] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 207.385496][ T6605] RIP: 0033:0x7f864b3a574e [ 207.389906][ T6605] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 207.409498][ T6605] RSP: 002b:00007f864a660ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 207.417920][ T6605] RAX: ffffffffffffffda RBX: 00007f864a6616c0 RCX: 00007f864b3a574e [ 207.426070][ T6605] RDX: 0000000000000001 RSI: 00007f864a6610b0 RDI: 0000000000000006 [ 207.434203][ T6605] RBP: 00007f864a6610a0 R08: 0000000000000000 R09: 0000000000000000 [ 207.442171][ T6605] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 207.450281][ T6605] R13: 000000000000000b R14: 00007f864b588f80 R15: 00007ffeb91066c8 [ 207.458380][ T6605] [ 207.464735][ T6609] CPU: 0 PID: 6609 Comm: syz.4.391 Not tainted syzkaller #0 [ 207.472065][ T6609] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 207.482141][ T6609] Call Trace: [ 207.485518][ T6609] [ 207.488530][ T6609] dump_stack_lvl+0x188/0x250 [ 207.493289][ T6609] ? show_regs_print_info+0x20/0x20 [ 207.498479][ T6609] ? load_image+0x400/0x400 [ 207.502976][ T6609] ? __lock_acquire+0x7d10/0x7d10 [ 207.507992][ T6609] should_fail+0x38c/0x4c0 [ 207.512415][ T6609] _copy_from_user+0x2e/0x170 [ 207.517113][ T6609] kstrtouint_from_user+0xd3/0x220 [ 207.522227][ T6609] ? kstrtol_from_user+0x2a0/0x2a0 [ 207.527370][ T6609] proc_fail_nth_write+0x8b/0x200 [ 207.532667][ T6609] ? proc_fail_nth_read+0x220/0x220 [ 207.537865][ T6609] ? common_file_perm+0x171/0x1c0 [ 207.542885][ T6609] ? proc_fail_nth_read+0x220/0x220 [ 207.548073][ T6609] vfs_write+0x30b/0xd60 [ 207.552305][ T6609] ? file_end_write+0x250/0x250 [ 207.557162][ T6609] ? __fget_files+0x40f/0x480 [ 207.561836][ T6609] ? mutex_lock_nested+0x17/0x20 [ 207.566758][ T6609] ? __fdget_pos+0x2bf/0x370 [ 207.571338][ T6609] ? ksys_write+0x71/0x260 [ 207.575770][ T6609] ksys_write+0x152/0x260 [ 207.580088][ T6609] ? __ia32_sys_read+0x80/0x80 [ 207.584936][ T6609] ? lockdep_hardirqs_on+0x94/0x140 [ 207.590134][ T6609] do_syscall_64+0x4c/0xa0 [ 207.594632][ T6609] ? clear_bhb_loop+0x30/0x80 [ 207.599299][ T6609] ? clear_bhb_loop+0x30/0x80 [ 207.603965][ T6609] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 207.609872][ T6609] RIP: 0033:0x7f16d038274e [ 207.614313][ T6609] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 207.633927][ T6609] RSP: 002b:00007f16cf61cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 207.642350][ T6609] RAX: ffffffffffffffda RBX: 00007f16cf61d6c0 RCX: 00007f16d038274e [ 207.650404][ T6609] RDX: 0000000000000001 RSI: 00007f16cf61d0b0 RDI: 0000000000000005 [ 207.658369][ T6609] RBP: 00007f16cf61d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 207.666327][ T6609] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 207.674369][ T6609] R13: 000000000000006e R14: 00007f16d0566058 R15: 00007ffc849792c8 [ 207.682362][ T6609] [ 207.686507][ T6610] CPU: 0 PID: 6610 Comm: syz.2.395 Not tainted syzkaller #0 [ 207.694133][ T6610] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 207.704312][ T6610] Call Trace: [ 207.707852][ T6610] [ 207.710774][ T6610] dump_stack_lvl+0x188/0x250 [ 207.715471][ T6610] ? show_regs_print_info+0x20/0x20 [ 207.720690][ T6610] ? load_image+0x400/0x400 [ 207.725212][ T6610] ? __lock_acquire+0x7d10/0x7d10 [ 207.730242][ T6610] should_fail+0x38c/0x4c0 [ 207.734664][ T6610] _copy_from_user+0x2e/0x170 [ 207.739524][ T6610] kstrtouint_from_user+0xd3/0x220 [ 207.744632][ T6610] ? kstrtol_from_user+0x2a0/0x2a0 [ 207.749953][ T6610] proc_fail_nth_write+0x8b/0x200 [ 207.755085][ T6610] ? proc_fail_nth_read+0x220/0x220 [ 207.760376][ T6610] ? common_file_perm+0x171/0x1c0 [ 207.765463][ T6610] ? proc_fail_nth_read+0x220/0x220 [ 207.770915][ T6610] vfs_write+0x30b/0xd60 [ 207.775248][ T6610] ? file_end_write+0x250/0x250 [ 207.780271][ T6610] ? __fget_files+0x40f/0x480 [ 207.785064][ T6610] ? mutex_lock_nested+0x17/0x20 [ 207.790018][ T6610] ? __fdget_pos+0x2bf/0x370 [ 207.794606][ T6610] ? ksys_write+0x71/0x260 [ 207.799017][ T6610] ksys_write+0x152/0x260 [ 207.803334][ T6610] ? __ia32_sys_read+0x80/0x80 [ 207.808180][ T6610] ? lockdep_hardirqs_on+0x94/0x140 [ 207.813372][ T6610] do_syscall_64+0x4c/0xa0 [ 207.817866][ T6610] ? clear_bhb_loop+0x30/0x80 [ 207.822532][ T6610] ? clear_bhb_loop+0x30/0x80 [ 207.827196][ T6610] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 207.833179][ T6610] RIP: 0033:0x7fbdb3b2c74e [ 207.837755][ T6610] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 207.857641][ T6610] RSP: 002b:00007fbdb2dc6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 207.866061][ T6610] RAX: ffffffffffffffda RBX: 00007fbdb2dc76c0 RCX: 00007fbdb3b2c74e [ 207.874030][ T6610] RDX: 0000000000000001 RSI: 00007fbdb2dc70b0 RDI: 0000000000000005 [ 207.881990][ T6610] RBP: 00007fbdb2dc70a0 R08: 0000000000000000 R09: 0000000000000000 [ 207.889960][ T6610] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 207.898031][ T6610] R13: 000000000000006e R14: 00007fbdb3d10058 R15: 00007ffc8d3c7768 [ 207.906030][ T6610] [ 207.958884][ T6612] FAULT_INJECTION: forcing a failure. [ 207.958884][ T6612] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 207.983788][ T6616] FAULT_INJECTION: forcing a failure. [ 207.983788][ T6616] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 207.999050][ T6614] FAULT_INJECTION: forcing a failure. [ 207.999050][ T6614] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 208.012361][ T6616] CPU: 0 PID: 6616 Comm: syz.1.397 Not tainted syzkaller #0 [ 208.019668][ T6616] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 208.029812][ T6616] Call Trace: [ 208.033087][ T6616] [ 208.036008][ T6616] dump_stack_lvl+0x188/0x250 [ 208.040679][ T6616] ? show_regs_print_info+0x20/0x20 [ 208.045863][ T6616] ? load_image+0x400/0x400 [ 208.050469][ T6616] ? __lock_acquire+0x7d10/0x7d10 [ 208.055774][ T6616] should_fail+0x38c/0x4c0 [ 208.060219][ T6616] _copy_from_user+0x2e/0x170 [ 208.064905][ T6616] kstrtouint_from_user+0xd3/0x220 [ 208.070020][ T6616] ? kstrtol_from_user+0x2a0/0x2a0 [ 208.075128][ T6616] proc_fail_nth_write+0x8b/0x200 [ 208.080283][ T6616] ? proc_fail_nth_read+0x220/0x220 [ 208.085582][ T6616] ? common_file_perm+0x171/0x1c0 [ 208.090710][ T6616] ? proc_fail_nth_read+0x220/0x220 [ 208.095904][ T6616] vfs_write+0x30b/0xd60 [ 208.100144][ T6616] ? file_end_write+0x250/0x250 [ 208.104996][ T6616] ? __fget_files+0x40f/0x480 [ 208.109669][ T6616] ? mutex_lock_nested+0x17/0x20 [ 208.114598][ T6616] ? __fdget_pos+0x2bf/0x370 [ 208.119174][ T6616] ? ksys_write+0x71/0x260 [ 208.123665][ T6616] ksys_write+0x152/0x260 [ 208.127981][ T6616] ? __ia32_sys_read+0x80/0x80 [ 208.132730][ T6616] ? lockdep_hardirqs_on+0x94/0x140 [ 208.138011][ T6616] do_syscall_64+0x4c/0xa0 [ 208.142950][ T6616] ? clear_bhb_loop+0x30/0x80 [ 208.147612][ T6616] ? clear_bhb_loop+0x30/0x80 [ 208.152275][ T6616] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 208.158156][ T6616] RIP: 0033:0x7f3baf05d74e [ 208.162636][ T6616] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 208.182341][ T6616] RSP: 002b:00007f3bae318ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 208.190762][ T6616] RAX: ffffffffffffffda RBX: 00007f3bae3196c0 RCX: 00007f3baf05d74e [ 208.198817][ T6616] RDX: 0000000000000001 RSI: 00007f3bae3190b0 RDI: 0000000000000007 [ 208.206789][ T6616] RBP: 00007f3bae3190a0 R08: 0000000000000000 R09: 0000000000000000 [ 208.214948][ T6616] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 208.222920][ T6616] R13: 000000000000000b R14: 00007f3baf240f80 R15: 00007ffeabae9a08 [ 208.230901][ T6616] [ 208.235933][ T6612] CPU: 0 PID: 6612 Comm: syz.0.396 Not tainted syzkaller #0 [ 208.243245][ T6612] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 208.252843][ T6619] FAULT_INJECTION: forcing a failure. [ 208.252843][ T6619] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 208.253302][ T6612] Call Trace: [ 208.253310][ T6612] [ 208.253319][ T6612] dump_stack_lvl+0x188/0x250 [ 208.277370][ T6612] ? show_regs_print_info+0x20/0x20 [ 208.282583][ T6612] ? load_image+0x400/0x400 [ 208.287082][ T6612] ? __lock_acquire+0x7d10/0x7d10 [ 208.292198][ T6612] should_fail+0x38c/0x4c0 [ 208.296632][ T6612] _copy_from_user+0x2e/0x170 [ 208.301332][ T6612] kstrtouint_from_user+0xd3/0x220 [ 208.306589][ T6612] ? kstrtol_from_user+0x2a0/0x2a0 [ 208.311750][ T6612] proc_fail_nth_write+0x8b/0x200 [ 208.316811][ T6612] ? proc_fail_nth_read+0x220/0x220 [ 208.322047][ T6612] ? common_file_perm+0x171/0x1c0 [ 208.327198][ T6612] ? proc_fail_nth_read+0x220/0x220 [ 208.332447][ T6612] vfs_write+0x30b/0xd60 [ 208.336701][ T6612] ? file_end_write+0x250/0x250 [ 208.341565][ T6612] ? __fget_files+0x40f/0x480 [ 208.346264][ T6612] ? mutex_lock_nested+0x17/0x20 [ 208.351219][ T6612] ? __fdget_pos+0x2bf/0x370 [ 208.355842][ T6612] ? ksys_write+0x71/0x260 [ 208.360299][ T6612] ksys_write+0x152/0x260 [ 208.364654][ T6612] ? __ia32_sys_read+0x80/0x80 [ 208.369434][ T6612] ? lockdep_hardirqs_on+0x94/0x140 [ 208.374645][ T6612] do_syscall_64+0x4c/0xa0 [ 208.379071][ T6612] ? clear_bhb_loop+0x30/0x80 [ 208.383768][ T6612] ? clear_bhb_loop+0x30/0x80 [ 208.388488][ T6612] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 208.394454][ T6612] RIP: 0033:0x7f864b3a574e [ 208.398894][ T6612] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 208.412187][ T6622] FAULT_INJECTION: forcing a failure. [ 208.412187][ T6622] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 208.413440][ T6622] [ 208.413448][ T6622] ====================================================== [ 208.413454][ T6622] WARNING: possible circular locking dependency detected [ 208.413464][ T6622] syzkaller #0 Not tainted [ 208.413472][ T6622] ------------------------------------------------------ [ 208.413477][ T6622] syz.2.400/6622 is trying to acquire lock: [ 208.413485][ T6622] ffffffff8c313580 (console_owner){....}-{0:0}, at: console_trylock_spinning+0x15c/0x370 [ 208.413530][ T6622] [ 208.413530][ T6622] but task is already holding lock: [ 208.413535][ T6622] ffff8880b913a358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 [ 208.413571][ T6622] [ 208.413571][ T6622] which lock already depends on the new lock. [ 208.413571][ T6622] [ 208.413576][ T6622] [ 208.413576][ T6622] the existing dependency chain (in reverse order) is: [ 208.413580][ T6622] [ 208.413580][ T6622] -> #4 (&rq->__lock){-.-.}-{2:2}: [ 208.413599][ T6622] _raw_spin_lock_nested+0x2e/0x40 [ 208.413616][ T6622] raw_spin_rq_lock_nested+0x26/0x140 [ 208.413630][ T6622] task_fork_fair+0x5c/0x350 [ 208.413642][ T6622] sched_cgroup_fork+0x2c6/0x320 [ 208.413658][ T6622] copy_process+0x22f6/0x3e20 [ 208.413673][ T6622] kernel_clone+0x23f/0x990 [ 208.413686][ T6622] kernel_thread+0xfa/0x160 [ 208.413700][ T6622] rest_init+0x21/0x330 [ 208.413723][ T6622] start_kernel+0x489/0x540 [ 208.413738][ T6622] secondary_startup_64_no_verify+0xb1/0xbb [ 208.413756][ T6622] [ 208.413756][ T6622] -> #3 (&p->pi_lock){-.-.}-{2:2}: [ 208.413775][ T6622] _raw_spin_lock_irqsave+0xb0/0x100 [ 208.413789][ T6622] try_to_wake_up+0x5c/0x1050 [ 208.413803][ T6622] __wake_up_common+0x2a4/0x4e0 [ 208.413819][ T6622] __wake_up+0x10e/0x180 [ 208.413832][ T6622] tty_port_default_wakeup+0xa5/0xf0 [ 208.413850][ T6622] serial8250_tx_chars+0x629/0x830 [ 208.413867][ T6622] serial8250_handle_irq+0x519/0x610 [ 208.413883][ T6622] serial8250_default_handle_irq+0xb4/0x1a0 [ 208.413899][ T6622] serial8250_interrupt+0x9b/0x1c0 [ 208.413913][ T6622] __handle_irq_event_percpu+0x299/0x9d0 [ 208.413928][ T6622] handle_irq_event+0xa5/0x220 [ 208.413942][ T6622] handle_edge_irq+0x243/0xb20 [ 208.413956][ T6622] __common_interrupt+0xd7/0x1e0 [ 208.413971][ T6622] common_interrupt+0xb0/0xd0 [ 208.413985][ T6622] asm_common_interrupt+0x22/0x40 [ 208.413999][ T6622] default_idle+0xb/0x10 [ 208.414010][ T6622] default_idle_call+0x81/0xc0 [ 208.414023][ T6622] do_idle+0x251/0x650 [ 208.414037][ T6622] cpu_startup_entry+0x14/0x20 [ 208.414051][ T6622] start_secondary+0x330/0x430 [ 208.414068][ T6622] secondary_startup_64_no_verify+0xb1/0xbb [ 208.414083][ T6622] [ 208.414083][ T6622] -> #2 (&tty->write_wait){-.-.}-{2:2}: [ 208.414102][ T6622] _raw_spin_lock_irqsave+0xb0/0x100 [ 208.414115][ T6622] __wake_up+0xf4/0x180 [ 208.414129][ T6622] tty_port_default_wakeup+0xa5/0xf0 [ 208.414143][ T6622] serial8250_tx_chars+0x629/0x830 [ 208.414158][ T6622] serial8250_handle_irq+0x519/0x610 [ 208.414173][ T6622] serial8250_default_handle_irq+0xb4/0x1a0 [ 208.414189][ T6622] serial8250_interrupt+0x9b/0x1c0 [ 208.414204][ T6622] __handle_irq_event_percpu+0x299/0x9d0 [ 208.414219][ T6622] handle_irq_event+0xa5/0x220 [ 208.414232][ T6622] handle_edge_irq+0x243/0xb20 [ 208.414247][ T6622] __common_interrupt+0xd7/0x1e0 [ 208.414260][ T6622] common_interrupt+0xb0/0xd0 [ 208.414274][ T6622] asm_common_interrupt+0x22/0x40 [ 208.414288][ T6622] default_idle+0xb/0x10 [ 208.414300][ T6622] default_idle_call+0x81/0xc0 [ 208.414313][ T6622] do_idle+0x251/0x650 [ 208.414326][ T6622] cpu_startup_entry+0x14/0x20 [ 208.414341][ T6622] start_secondary+0x330/0x430 [ 208.414355][ T6622] secondary_startup_64_no_verify+0xb1/0xbb [ 208.414370][ T6622] [ 208.414370][ T6622] -> #1 (&port_lock_key){-.-.}-{2:2}: [ 208.414389][ T6622] _raw_spin_lock_irqsave+0xb0/0x100 [ 208.414403][ T6622] serial8250_console_write+0x178/0x1000 [ 208.414419][ T6622] console_unlock+0xb9a/0x1120 [ 208.414431][ T6622] vprintk_emit+0xc0/0x150 [ 208.414443][ T6622] _printk+0xda/0x130 [ 208.414455][ T6622] register_console+0x699/0x980 [ 208.414467][ T6622] univ8250_console_init+0x41/0x50 [ 208.414483][ T6622] console_init+0x177/0x5d0 [ 208.414497][ T6622] start_kernel+0x2fc/0x540 [ 208.414510][ T6622] secondary_startup_64_no_verify+0xb1/0xbb [ 208.414525][ T6622] [ 208.414525][ T6622] -> #0 (console_owner){....}-{0:0}: [ 208.414542][ T6622] __lock_acquire+0x2c42/0x7d10 [ 208.414558][ T6622] lock_acquire+0x19e/0x400 [ 208.414572][ T6622] console_trylock_spinning+0x17c/0x370 [ 208.414586][ T6622] vprintk_emit+0xa7/0x150 [ 208.414597][ T6622] _printk+0xda/0x130 [ 208.414608][ T6622] should_fail+0x36d/0x4c0 [ 208.414624][ T6622] strncpy_from_user+0x32/0x360 [ 208.414638][ T6622] strncpy_from_user_nofault+0x6d/0x140 [ 208.414653][ T6622] bpf_probe_read_user_str+0x26/0x70 [ 208.414670][ T6622] bpf_prog_693483806bd7978c+0x5b/0xb80 [ 208.414683][ T6622] bpf_trace_run2+0x163/0x2e0 [ 208.414695][ T6622] __traceiter_tlb_flush+0x69/0xb0 [ 208.414716][ T6622] trace_tlb_flush+0xe6/0x110 [ 208.414729][ T6622] switch_mm_irqs_off+0x6f3/0x9b0 [ 208.414741][ T6622] __schedule+0x1079/0x43c0 [ 208.414755][ T6622] preempt_schedule_irq+0xbb/0x160 [ 208.414770][ T6622] irqentry_exit+0x63/0x70 [ 208.414784][ T6622] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 208.414799][ T6622] lock_acquire+0x208/0x400 [ 208.414814][ T6622] file_start_write+0xc3/0x250 [ 208.414829][ T6622] vfs_write+0x295/0xd60 [ 208.414841][ T6622] ksys_write+0x152/0x260 [ 208.414854][ T6622] do_syscall_64+0x4c/0xa0 [ 208.414867][ T6622] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 208.414881][ T6622] [ 208.414881][ T6622] other info that might help us debug this: [ 208.414881][ T6622] [ 208.414885][ T6622] Chain exists of: [ 208.414885][ T6622] console_owner --> &p->pi_lock --> &rq->__lock [ 208.414885][ T6622] [ 208.414906][ T6622] Possible unsafe locking scenario: [ 208.414906][ T6622] [ 208.414910][ T6622] CPU0 CPU1 [ 208.414914][ T6622] ---- ---- [ 208.414917][ T6622] lock(&rq->__lock); [ 208.414926][ T6622] lock(&p->pi_lock); [ 208.414935][ T6622] lock(&rq->__lock); [ 208.414944][ T6622] lock(console_owner); [ 208.414952][ T6622] [ 208.414952][ T6622] *** DEADLOCK *** [ 208.414952][ T6622] [ 208.414956][ T6622] 4 locks held by syz.2.400/6622: [ 208.414965][ T6622] #0: ffff88807826f770 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2bf/0x370 [ 208.415000][ T6622] #1: ffff88807a4a8460 (sb_writers#4){.+.+}-{0:0}, at: vfs_write+0x295/0xd60 [ 208.415036][ T6622] #2: ffff8880b913a358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 [ 208.415070][ T6622] #3: ffffffff8c31eb20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 [ 208.415104][ T6622] [ 208.415104][ T6622] stack backtrace: [ 208.418601][ T6612] RSP: 002b:00007f864a660ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 208.418621][ T6612] RAX: ffffffffffffffda RBX: 00007f864a6616c0 RCX: 00007f864b3a574e [ 208.418632][ T6612] RDX: 0000000000000001 RSI: 00007f864a6610b0 RDI: 0000000000000007 [ 208.418641][ T6612] RBP: 00007f864a6610a0 R08: 0000000000000000 R09: 0000000000000000 [ 208.418650][ T6612] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 208.418660][ T6612] R13: 000000000000000b R14: 00007f864b588f80 R15: 00007ffeb91066c8 [ 208.418678][ T6612] [ 208.418686][ T6622] CPU: 1 PID: 6622 Comm: syz.2.400 Not tainted syzkaller #0 [ 208.418699][ T6622] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 208.418712][ T6622] Call Trace: [ 208.418718][ T6622] [ 208.418722][ T6622] dump_stack_lvl+0x188/0x250 [ 208.418737][ T6622] ? load_image+0x400/0x400 [ 208.418747][ T6622] ? show_regs_print_info+0x20/0x20 [ 208.418761][ T6622] ? print_circular_bug+0x12b/0x1a0 [ 208.418773][ T6622] check_noncircular+0x296/0x330 [ 208.418786][ T6622] ? add_chain_block+0x940/0x940 [ 208.418796][ T6622] ? lockdep_lock+0xf1/0x1f0 [ 208.418811][ T6622] ? mark_lock+0x94/0x320 [ 208.418822][ T6622] __lock_acquire+0x2c42/0x7d10 [ 208.418841][ T6622] ? verify_lock_unused+0x140/0x140 [ 208.418854][ T6622] ? verify_lock_unused+0x140/0x140 [ 208.418870][ T6622] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 208.418882][ T6622] ? _raw_spin_unlock+0x40/0x40 [ 208.418894][ T6622] lock_acquire+0x19e/0x400 [ 208.418906][ T6622] ? console_trylock_spinning+0x15c/0x370 [ 208.418918][ T6622] ? console_trylock_spinning+0x15c/0x370 [ 208.418930][ T6622] ? __lock_acquire+0x7d10/0x7d10 [ 208.418942][ T6622] ? do_raw_spin_lock+0x128/0x2f0 [ 208.418953][ T6622] ? read_lock_is_recursive+0x10/0x10 [ 208.418967][ T6622] ? __rwlock_init+0x140/0x140 [ 208.418977][ T6622] ? __lock_acquire+0x12e8/0x7d10 [ 208.418991][ T6622] ? do_raw_spin_unlock+0x11d/0x230 [ 208.419003][ T6622] console_trylock_spinning+0x17c/0x370 [ 208.419014][ T6622] ? console_trylock_spinning+0x15c/0x370 [ 208.419026][ T6622] ? vprintk_emit+0x150/0x150 [ 208.419041][ T6622] vprintk_emit+0xa7/0x150 [ 208.419052][ T6622] _printk+0xda/0x130 [ 208.419064][ T6622] ? load_image+0x400/0x400 [ 208.419073][ T6622] ? __lock_acquire+0x12e8/0x7d10 [ 208.419089][ T6622] should_fail+0x36d/0x4c0 [ 208.419103][ T6622] strncpy_from_user+0x32/0x360 [ 208.419115][ T6622] ? read_lock_is_recursive+0x10/0x10 [ 208.419128][ T6622] strncpy_from_user_nofault+0x6d/0x140 [ 208.419142][ T6622] bpf_probe_read_user_str+0x26/0x70 [ 208.419155][ T6622] bpf_prog_693483806bd7978c+0x5b/0xb80 [ 208.419166][ T6622] bpf_trace_run2+0x163/0x2e0 [ 208.419177][ T6622] ? trace_pelt_se_tp+0x39/0x100 [ 208.419188][ T6622] ? bpf_trace_run1+0x2e0/0x2e0 [ 208.419197][ T6622] ? __update_load_avg_se+0x6e7/0xba0 [ 208.419210][ T6622] ? psi_group_change+0xb40/0x1150 [ 208.419222][ T6622] ? perf_trace_tlb_flush+0x330/0x330 [ 208.419234][ T6622] __traceiter_tlb_flush+0x69/0xb0 [ 208.419247][ T6622] trace_tlb_flush+0xe6/0x110 [ 208.419258][ T6622] switch_mm_irqs_off+0x6f3/0x9b0 [ 208.419271][ T6622] ? switch_mm+0x140/0x140 [ 208.419284][ T6622] __schedule+0x1079/0x43c0 [ 208.419297][ T6622] ? mark_lock+0x94/0x320 [ 208.419308][ T6622] ? mark_lock+0x94/0x320 [ 208.419321][ T6622] ? release_firmware_map_entry+0x190/0x190 [ 208.419336][ T6622] ? preempt_schedule_irq+0xb0/0x160 [ 208.419349][ T6622] preempt_schedule_irq+0xbb/0x160 [ 208.419361][ T6622] ? __cond_resched+0xd0/0xd0 [ 208.419373][ T6622] ? rcu_is_watching+0x11/0xa0 [ 208.419388][ T6622] ? rcu_irq_exit_check_preempt+0xdb/0x200 [ 208.419400][ T6622] irqentry_exit+0x63/0x70 [ 208.419410][ T6622] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 208.419420][ T6622] RIP: 0010:lock_acquire+0x208/0x400 [ 208.419432][ T6622] Code: f7 84 24 80 00 00 00 00 02 00 00 43 c6 44 3d 04 f8 0f 85 f1 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 44 3d 00 00 00 00 00 43 c7 44 3d 08 00 00 00 00 65 48 8b 04 [ 208.419440][ T6622] RSP: 0018:ffffc90002f8fb80 EFLAGS: 00000206 [ 208.419448][ T6622] RAX: 0000000000000001 RBX: 0000000000000000 RCX: e1c07c5352c37900 [ 208.419454][ T6622] RDX: 0000000000000000 RSI: ffffffff8a2b3aa0 RDI: ffffffff8a79fe40 [ 208.419463][ T6622] RBP: ffffc90002f8fca0 R08: dffffc0000000000 R09: 1ffffffff203aa2d [ 208.419469][ T6622] R10: dffffc0000000000 R11: fffffbfff203aa2e R12: ffff88807a4a8460 [ 208.419476][ T6622] R13: 1ffff920005f1f7c R14: 0000000000000246 R15: dffffc0000000000 [ 208.419487][ T6622] ? rcu_lock_release+0x20/0x20 [ 208.419497][ T6622] ? read_lock_is_recursive+0x10/0x10 [ 208.419508][ T6622] ? end_current_label_crit_section+0x14b/0x170 [ 208.419521][ T6622] ? common_file_perm+0x171/0x1c0 [ 208.419530][ T6622] file_start_write+0xc3/0x250 [ 208.419539][ T6622] ? vfs_write+0x295/0xd60 [ 208.419548][ T6622] vfs_write+0x295/0xd60 [ 208.419557][ T6622] ? file_end_write+0x250/0x250 [ 208.419566][ T6622] ? __fget_files+0x40f/0x480 [ 208.419576][ T6622] ? mutex_lock_nested+0x17/0x20 [ 208.419585][ T6622] ? __fdget_pos+0x2bf/0x370 [ 208.419593][ T6622] ? ksys_write+0x71/0x260 [ 208.419601][ T6622] ksys_write+0x152/0x260 [ 208.419609][ T6622] ? __ia32_sys_read+0x80/0x80 [ 208.419618][ T6622] ? lockdep_hardirqs_on+0x94/0x140 [ 208.419628][ T6622] do_syscall_64+0x4c/0xa0 [ 208.419637][ T6622] ? clear_bhb_loop+0x30/0x80 [ 208.419645][ T6622] ? clear_bhb_loop+0x30/0x80 [ 208.419654][ T6622] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 208.419663][ T6622] RIP: 0033:0x7fbdb3b2c74e [ 208.419671][ T6622] Code: Unable to access opcode bytes at RIP 0x7fbdb3b2c724. [ 208.419675][ T6622] RSP: 002b:00007fbdb2dc6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 208.419684][ T6622] RAX: ffffffffffffffda RBX: 00007fbdb2dc76c0 RCX: 00007fbdb3b2c74e [ 208.419690][ T6622] RDX: 0000000000000001 RSI: 00007fbdb2dc70b0 RDI: 0000000000000004 [ 208.419696][ T6622] RBP: 00007fbdb2dc70a0 R08: 0000000000000000 R09: 0000000000000000 [ 208.419702][ T6622] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 208.419712][ T6622] R13: 000000000000006e R14: 00007fbdb3d10058 R15: 00007ffc8d3c7768 [ 208.419721][ T6622] [ 209.708443][ T6622] CPU: 1 PID: 6622 Comm: syz.2.400 Not tainted syzkaller #0 [ 209.715808][ T6622] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 209.725931][ T6622] Call Trace: [ 209.729196][ T6622] [ 209.732232][ T6622] dump_stack_lvl+0x188/0x250 [ 209.736922][ T6622] ? show_regs_print_info+0x20/0x20 [ 209.742206][ T6622] ? load_image+0x400/0x400 [ 209.746830][ T6622] ? __lock_acquire+0x12e8/0x7d10 [ 209.752148][ T6622] should_fail+0x38c/0x4c0 [ 209.756602][ T6622] strncpy_from_user+0x32/0x360 [ 209.761480][ T6622] ? read_lock_is_recursive+0x10/0x10 [ 209.766858][ T6622] strncpy_from_user_nofault+0x6d/0x140 [ 209.772395][ T6622] bpf_probe_read_user_str+0x26/0x70 [ 209.777669][ T6622] bpf_prog_693483806bd7978c+0x5b/0xb80 [ 209.783426][ T6622] bpf_trace_run2+0x163/0x2e0 [ 209.788198][ T6622] ? trace_pelt_se_tp+0x39/0x100 [ 209.793171][ T6622] ? bpf_trace_run1+0x2e0/0x2e0 [ 209.798003][ T6622] ? __update_load_avg_se+0x6e7/0xba0 [ 209.803451][ T6622] ? psi_group_change+0xb40/0x1150 [ 209.808556][ T6622] ? perf_trace_tlb_flush+0x330/0x330 [ 209.813907][ T6622] __traceiter_tlb_flush+0x69/0xb0 [ 209.819003][ T6622] trace_tlb_flush+0xe6/0x110 [ 209.823660][ T6622] switch_mm_irqs_off+0x6f3/0x9b0 [ 209.828673][ T6622] ? switch_mm+0x140/0x140 [ 209.833093][ T6622] __schedule+0x1079/0x43c0 [ 209.837581][ T6622] ? mark_lock+0x94/0x320 [ 209.841889][ T6622] ? mark_lock+0x94/0x320 [ 209.846196][ T6622] ? release_firmware_map_entry+0x190/0x190 [ 209.852070][ T6622] ? preempt_schedule_irq+0xb0/0x160 [ 209.857437][ T6622] preempt_schedule_irq+0xbb/0x160 [ 209.862532][ T6622] ? __cond_resched+0xd0/0xd0 [ 209.867190][ T6622] ? rcu_is_watching+0x11/0xa0 [ 209.872020][ T6622] ? rcu_irq_exit_check_preempt+0xdb/0x200 [ 209.877804][ T6622] irqentry_exit+0x63/0x70 [ 209.882219][ T6622] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 209.888303][ T6622] RIP: 0010:lock_acquire+0x208/0x400 [ 209.893592][ T6622] Code: f7 84 24 80 00 00 00 00 02 00 00 43 c6 44 3d 04 f8 0f 85 f1 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 44 3d 00 00 00 00 00 43 c7 44 3d 08 00 00 00 00 65 48 8b 04 [ 209.913292][ T6622] RSP: 0018:ffffc90002f8fb80 EFLAGS: 00000206 [ 209.919370][ T6622] RAX: 0000000000000001 RBX: 0000000000000000 RCX: e1c07c5352c37900 [ 209.927335][ T6622] RDX: 0000000000000000 RSI: ffffffff8a2b3aa0 RDI: ffffffff8a79fe40 [ 209.935291][ T6622] RBP: ffffc90002f8fca0 R08: dffffc0000000000 R09: 1ffffffff203aa2d [ 209.943402][ T6622] R10: dffffc0000000000 R11: fffffbfff203aa2e R12: ffff88807a4a8460 [ 209.951381][ T6622] R13: 1ffff920005f1f7c R14: 0000000000000246 R15: dffffc0000000000 [ 209.959366][ T6622] ? rcu_lock_release+0x20/0x20 [ 209.964224][ T6622] ? read_lock_is_recursive+0x10/0x10 [ 209.969609][ T6622] ? end_current_label_crit_section+0x14b/0x170 [ 209.975835][ T6622] ? common_file_perm+0x171/0x1c0 [ 209.980838][ T6622] file_start_write+0xc3/0x250 [ 209.985592][ T6622] ? vfs_write+0x295/0xd60 [ 209.989982][ T6622] vfs_write+0x295/0xd60 [ 209.994202][ T6622] ? file_end_write+0x250/0x250 [ 209.999032][ T6622] ? __fget_files+0x40f/0x480 [ 210.003702][ T6622] ? mutex_lock_nested+0x17/0x20 [ 210.008624][ T6622] ? __fdget_pos+0x2bf/0x370 [ 210.013187][ T6622] ? ksys_write+0x71/0x260 [ 210.017604][ T6622] ksys_write+0x152/0x260 [ 210.021909][ T6622] ? __ia32_sys_read+0x80/0x80 [ 210.026653][ T6622] ? lockdep_hardirqs_on+0x94/0x140 [ 210.031927][ T6622] do_syscall_64+0x4c/0xa0 [ 210.036316][ T6622] ? clear_bhb_loop+0x30/0x80 [ 210.040967][ T6622] ? clear_bhb_loop+0x30/0x80 [ 210.045628][ T6622] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 210.051497][ T6622] RIP: 0033:0x7fbdb3b2c74e [ 210.055896][ T6622] Code: Unable to access opcode bytes at RIP 0x7fbdb3b2c724. [ 210.063243][ T6622] RSP: 002b:00007fbdb2dc6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 210.071628][ T6622] RAX: ffffffffffffffda RBX: 00007fbdb2dc76c0 RCX: 00007fbdb3b2c74e [ 210.079598][ T6622] RDX: 0000000000000001 RSI: 00007fbdb2dc70b0 RDI: 0000000000000004 [ 210.087633][ T6622] RBP: 00007fbdb2dc70a0 R08: 0000000000000000 R09: 0000000000000000 [ 210.095598][ T6622] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 210.103722][ T6622] R13: 000000000000006e R14: 00007fbdb3d10058 R15: 00007ffc8d3c7768 [ 210.111696][ T6622] [ 210.138851][ T6624] FAULT_INJECTION: forcing a failure. [ 210.138851][ T6624] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 210.152233][ T6624] CPU: 0 PID: 6624 Comm: syz.0.401 Not tainted syzkaller #0 [ 210.159630][ T6624] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 210.169873][ T6624] Call Trace: [ 210.173168][ T6624] [ 210.176190][ T6624] dump_stack_lvl+0x188/0x250 [ 210.180875][ T6624] ? show_regs_print_info+0x20/0x20 [ 210.186062][ T6624] ? load_image+0x400/0x400 [ 210.190677][ T6624] ? rcu_is_watching+0x11/0xa0 [ 210.195433][ T6624] ? __lock_acquire+0x7d10/0x7d10 [ 210.200461][ T6624] ? lock_release+0xb5/0x8a0 [ 210.205062][ T6624] ? __might_sleep+0xf0/0xf0 [ 210.209642][ T6624] should_fail+0x38c/0x4c0 [ 210.214046][ T6624] _copy_from_user+0x2e/0x170 [ 210.218707][ T6624] kstrtouint_from_user+0xd3/0x220 [ 210.223896][ T6624] ? rcu_is_watching+0x11/0xa0 [ 210.228643][ T6624] ? kstrtol_from_user+0x2a0/0x2a0 [ 210.233832][ T6624] ? lock_acquire+0xc8/0x400 [ 210.238422][ T6624] ? rcu_lock_release+0x20/0x20 [ 210.243343][ T6624] ? read_lock_is_recursive+0x10/0x10 [ 210.248700][ T6624] proc_fail_nth_write+0x8b/0x200 [ 210.253706][ T6624] ? proc_fail_nth_read+0x220/0x220 [ 210.258892][ T6624] ? common_file_perm+0x171/0x1c0 [ 210.263904][ T6624] ? preempt_count_add+0x8d/0x190 [ 210.268998][ T6624] ? proc_fail_nth_read+0x220/0x220 [ 210.274180][ T6624] vfs_write+0x30b/0xd60 [ 210.278406][ T6624] ? file_end_write+0x250/0x250 [ 210.283244][ T6624] ? rcu_is_watching+0x11/0xa0 [ 210.287993][ T6624] ? __fget_files+0x40f/0x480 [ 210.292655][ T6624] ? mutex_lock_nested+0x17/0x20 [ 210.297578][ T6624] ? __fdget_pos+0x2bf/0x370 [ 210.302155][ T6624] ? ksys_write+0x71/0x260 [ 210.306658][ T6624] ksys_write+0x152/0x260 [ 210.311085][ T6624] ? __ia32_sys_read+0x80/0x80 [ 210.315831][ T6624] ? rcu_is_watching+0x11/0xa0 [ 210.320579][ T6624] do_syscall_64+0x4c/0xa0 [ 210.324995][ T6624] ? clear_bhb_loop+0x30/0x80 [ 210.329656][ T6624] ? clear_bhb_loop+0x30/0x80 [ 210.334322][ T6624] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 210.340241][ T6624] RIP: 0033:0x7f864b3a574e [ 210.344670][ T6624] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 210.364348][ T6624] RSP: 002b:00007f864a660ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 210.372749][ T6624] RAX: ffffffffffffffda RBX: 00007f864a6616c0 RCX: 00007f864b3a574e [ 210.380725][ T6624] RDX: 0000000000000001 RSI: 00007f864a6610b0 RDI: 0000000000000007 [ 210.388789][ T6624] RBP: 00007f864a6610a0 R08: 0000000000000000 R09: 0000000000000000 [ 210.396751][ T6624] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 210.404708][ T6624] R13: 000000000000000b R14: 00007f864b588f80 R15: 00007ffeb91066c8 [ 210.412667][ T6624] [ 210.433400][ T6614] CPU: 0 PID: 6614 Comm: syz.4.398 Not tainted syzkaller #0 [ 210.440820][ T6614] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 210.450886][ T6614] Call Trace: [ 210.454159][ T6614] [ 210.457118][ T6614] dump_stack_lvl+0x188/0x250 [ 210.461791][ T6614] ? show_regs_print_info+0x20/0x20 [ 210.467066][ T6614] ? load_image+0x400/0x400 [ 210.471561][ T6614] ? __lock_acquire+0x7d10/0x7d10 [ 210.476768][ T6614] should_fail+0x38c/0x4c0 [ 210.481187][ T6614] _copy_from_user+0x2e/0x170 [ 210.485530][ T6630] FAULT_INJECTION: forcing a failure. [ 210.485530][ T6630] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 210.485856][ T6614] kstrtouint_from_user+0xd3/0x220 [ 210.503952][ T6614] ? kstrtol_from_user+0x2a0/0x2a0 [ 210.509081][ T6614] proc_fail_nth_write+0x8b/0x200 [ 210.514109][ T6614] ? proc_fail_nth_read+0x220/0x220 [ 210.519298][ T6614] ? common_file_perm+0x171/0x1c0 [ 210.524318][ T6614] ? proc_fail_nth_read+0x220/0x220 [ 210.529508][ T6614] vfs_write+0x30b/0xd60 [ 210.533782][ T6614] ? file_end_write+0x250/0x250 [ 210.538627][ T6614] ? __fget_files+0x40f/0x480 [ 210.543304][ T6614] ? mutex_lock_nested+0x17/0x20 [ 210.548247][ T6614] ? __fdget_pos+0x2bf/0x370 [ 210.552845][ T6614] ? ksys_write+0x71/0x260 [ 210.557321][ T6614] ksys_write+0x152/0x260 [ 210.561643][ T6614] ? __ia32_sys_read+0x80/0x80 [ 210.566397][ T6614] ? lockdep_hardirqs_on+0x94/0x140 [ 210.571599][ T6614] do_syscall_64+0x4c/0xa0 [ 210.576011][ T6614] ? clear_bhb_loop+0x30/0x80 [ 210.580677][ T6614] ? clear_bhb_loop+0x30/0x80 [ 210.585345][ T6614] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 210.591268][ T6614] RIP: 0033:0x7f16d038274e [ 210.595682][ T6614] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 210.615381][ T6614] RSP: 002b:00007f16cf63dff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 210.624061][ T6614] RAX: ffffffffffffffda RBX: 00007f16cf63e6c0 RCX: 00007f16d038274e [ 210.632071][ T6614] RDX: 0000000000000001 RSI: 00007f16cf63e0b0 RDI: 0000000000000007 [ 210.640055][ T6614] RBP: 00007f16cf63e0a0 R08: 0000000000000000 R09: 0000000000000000 [ 210.648113][ T6614] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 210.656177][ T6614] R13: 000000000000000b R14: 00007f16d0565f80 R15: 00007ffc849792c8 [ 210.664344][ T6614] [ 210.667356][ T6619] CPU: 1 PID: 6619 Comm: syz.3.399 Not tainted syzkaller #0 [ 210.674772][ T6619] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 210.684832][ T6619] Call Trace: [ 210.688108][ T6619] [ 210.691026][ T6619] dump_stack_lvl+0x188/0x250 [ 210.695699][ T6619] ? show_regs_print_info+0x20/0x20 [ 210.700892][ T6619] ? load_image+0x400/0x400 [ 210.705384][ T6619] ? __lock_acquire+0x7d10/0x7d10 [ 210.710427][ T6619] should_fail+0x38c/0x4c0 [ 210.714946][ T6619] _copy_from_user+0x2e/0x170 [ 210.719638][ T6619] kstrtouint_from_user+0xd3/0x220 [ 210.724767][ T6619] ? kstrtol_from_user+0x2a0/0x2a0 [ 210.730074][ T6619] proc_fail_nth_write+0x8b/0x200 [ 210.735240][ T6619] ? proc_fail_nth_read+0x220/0x220 [ 210.740464][ T6619] ? common_file_perm+0x171/0x1c0 [ 210.745493][ T6619] ? proc_fail_nth_read+0x220/0x220 [ 210.750695][ T6619] vfs_write+0x30b/0xd60 [ 210.754937][ T6619] ? file_end_write+0x250/0x250 [ 210.759784][ T6619] ? __fget_files+0x40f/0x480 [ 210.764457][ T6619] ? mutex_lock_nested+0x17/0x20 [ 210.769387][ T6619] ? __fdget_pos+0x2bf/0x370 [ 210.773973][ T6619] ? ksys_write+0x71/0x260 [ 210.778393][ T6619] ksys_write+0x152/0x260 [ 210.782716][ T6619] ? __ia32_sys_read+0x80/0x80 [ 210.787471][ T6619] ? lockdep_hardirqs_on+0x94/0x140 [ 210.792662][ T6619] do_syscall_64+0x4c/0xa0 [ 210.797067][ T6619] ? clear_bhb_loop+0x30/0x80 [ 210.801770][ T6619] ? clear_bhb_loop+0x30/0x80 [ 210.806434][ T6619] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 210.812413][ T6619] RIP: 0033:0x7fbad61c174e [ 210.816820][ T6619] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 210.836507][ T6619] RSP: 002b:00007fbad545bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 210.845035][ T6619] RAX: ffffffffffffffda RBX: 00007fbad545c6c0 RCX: 00007fbad61c174e [ 210.853009][ T6619] RDX: 0000000000000001 RSI: 00007fbad545c0b0 RDI: 0000000000000005 [ 210.860982][ T6619] RBP: 00007fbad545c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 210.868952][ T6619] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 210.877286][ T6619] R13: 000000000000006e R14: 00007fbad63a5058 R15: 00007ffe2023ce08 [ 210.885271][ T6619] [ 210.888288][ T6630] CPU: 0 PID: 6630 Comm: syz.0.403 Not tainted syzkaller #0 [ 210.890334][ T6632] FAULT_INJECTION: forcing a failure. [ 210.890334][ T6632] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 210.895580][ T6630] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 210.895592][ T6630] Call Trace: [ 210.895598][ T6630] [ 210.895604][ T6630] dump_stack_lvl+0x188/0x250 [ 210.895628][ T6630] ? show_regs_print_info+0x20/0x20 [ 210.895641][ T6630] ? load_image+0x400/0x400 [ 210.895654][ T6630] ? rcu_is_watching+0x11/0xa0 [ 210.895668][ T6630] ? __lock_acquire+0x7d10/0x7d10 [ 210.895686][ T6630] ? lock_release+0xb5/0x8a0 [ 210.895702][ T6630] ? __might_sleep+0xf0/0xf0 [ 210.895717][ T6630] should_fail+0x38c/0x4c0 [ 210.895738][ T6630] _copy_from_user+0x2e/0x170 [ 210.895756][ T6630] kstrtouint_from_user+0xd3/0x220 [ 210.895773][ T6630] ? rcu_is_watching+0x11/0xa0 [ 210.895787][ T6630] ? kstrtol_from_user+0x2a0/0x2a0 [ 210.895802][ T6630] ? lock_acquire+0xc8/0x400 [ 210.895821][ T6630] ? rcu_lock_release+0x20/0x20 [ 210.991899][ T6630] ? read_lock_is_recursive+0x10/0x10 [ 210.997284][ T6630] proc_fail_nth_write+0x8b/0x200 [ 211.002299][ T6630] ? proc_fail_nth_read+0x220/0x220 [ 211.007480][ T6630] ? common_file_perm+0x171/0x1c0 [ 211.012498][ T6630] ? preempt_count_add+0x8d/0x190 [ 211.017506][ T6630] ? proc_fail_nth_read+0x220/0x220 [ 211.022691][ T6630] vfs_write+0x30b/0xd60 [ 211.027002][ T6630] ? file_end_write+0x250/0x250 [ 211.031841][ T6630] ? rcu_is_watching+0x11/0xa0 [ 211.036591][ T6630] ? __fget_files+0x40f/0x480 [ 211.041257][ T6630] ? mutex_lock_nested+0x17/0x20 [ 211.046177][ T6630] ? __fdget_pos+0x2bf/0x370 [ 211.050752][ T6630] ? ksys_write+0x71/0x260 [ 211.055173][ T6630] ksys_write+0x152/0x260 [ 211.059573][ T6630] ? __ia32_sys_read+0x80/0x80 [ 211.064319][ T6630] ? rcu_is_watching+0x11/0xa0 [ 211.069070][ T6630] do_syscall_64+0x4c/0xa0 [ 211.073556][ T6630] ? clear_bhb_loop+0x30/0x80 [ 211.078310][ T6630] ? clear_bhb_loop+0x30/0x80 [ 211.083344][ T6630] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 211.089245][ T6630] RIP: 0033:0x7f864b3a574e [ 211.093694][ T6630] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 211.113304][ T6630] RSP: 002b:00007f864a63fff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 211.121806][ T6630] RAX: ffffffffffffffda RBX: 00007f864a6406c0 RCX: 00007f864b3a574e [ 211.129958][ T6630] RDX: 0000000000000001 RSI: 00007f864a6400b0 RDI: 0000000000000005 [ 211.137926][ T6630] RBP: 00007f864a6400a0 R08: 0000000000000000 R09: 0000000000000000 [ 211.145888][ T6630] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 211.153843][ T6630] R13: 000000000000006e R14: 00007f864b589058 R15: 00007ffeb91066c8 [ 211.161854][ T6630] [ 211.170267][ T6634] FAULT_INJECTION: forcing a failure. [ 211.170267][ T6634] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 211.174320][ T6632] CPU: 1 PID: 6632 Comm: syz.2.402 Not tainted syzkaller #0 [ 211.190979][ T6632] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 211.201046][ T6632] Call Trace: [ 211.204324][ T6632] [ 211.207247][ T6632] dump_stack_lvl+0x188/0x250 [ 211.211920][ T6632] ? show_regs_print_info+0x20/0x20 [ 211.217281][ T6632] ? load_image+0x400/0x400 [ 211.221782][ T6632] ? rcu_is_watching+0x11/0xa0 [ 211.226537][ T6632] ? __lock_acquire+0x7d10/0x7d10 [ 211.231570][ T6632] ? lock_release+0xb5/0x8a0 [ 211.236152][ T6632] ? __might_sleep+0xf0/0xf0 [ 211.240744][ T6632] should_fail+0x38c/0x4c0 [ 211.245192][ T6632] _copy_from_user+0x2e/0x170 [ 211.249865][ T6632] kstrtouint_from_user+0xd3/0x220 [ 211.254980][ T6632] ? rcu_is_watching+0x11/0xa0 [ 211.259780][ T6632] ? kstrtol_from_user+0x2a0/0x2a0 [ 211.264913][ T6632] ? lock_acquire+0xc8/0x400 [ 211.269529][ T6632] ? rcu_lock_release+0x20/0x20 [ 211.274391][ T6632] ? read_lock_is_recursive+0x10/0x10 [ 211.279757][ T6632] proc_fail_nth_write+0x8b/0x200 [ 211.285002][ T6632] ? proc_fail_nth_read+0x220/0x220 [ 211.290213][ T6632] ? common_file_perm+0x171/0x1c0 [ 211.295320][ T6632] ? preempt_count_add+0x8d/0x190 [ 211.300359][ T6632] ? proc_fail_nth_read+0x220/0x220 [ 211.305617][ T6632] vfs_write+0x30b/0xd60 [ 211.309849][ T6632] ? file_end_write+0x250/0x250 [ 211.314684][ T6632] ? rcu_is_watching+0x11/0xa0 [ 211.319438][ T6632] ? __fget_files+0x40f/0x480 [ 211.324115][ T6632] ? mutex_lock_nested+0x17/0x20 [ 211.329045][ T6632] ? __fdget_pos+0x2bf/0x370 [ 211.333646][ T6632] ? ksys_write+0x71/0x260 [ 211.338149][ T6632] ksys_write+0x152/0x260 [ 211.342477][ T6632] ? __ia32_sys_read+0x80/0x80 [ 211.347232][ T6632] ? rcu_is_watching+0x11/0xa0 [ 211.351993][ T6632] do_syscall_64+0x4c/0xa0 [ 211.356395][ T6632] ? clear_bhb_loop+0x30/0x80 [ 211.361064][ T6632] ? clear_bhb_loop+0x30/0x80 [ 211.365727][ T6632] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 211.371865][ T6632] RIP: 0033:0x7fbdb3b2c74e [ 211.376292][ T6632] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 211.395891][ T6632] RSP: 002b:00007fbdb2dc6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 211.404319][ T6632] RAX: ffffffffffffffda RBX: 00007fbdb2dc76c0 RCX: 00007fbdb3b2c74e [ 211.412470][ T6632] RDX: 0000000000000001 RSI: 00007fbdb2dc70b0 RDI: 0000000000000005 [ 211.420616][ T6632] RBP: 00007fbdb2dc70a0 R08: 0000000000000000 R09: 0000000000000000 [ 211.428581][ T6632] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 211.436560][ T6632] R13: 000000000000006e R14: 00007fbdb3d10058 R15: 00007ffc8d3c7768 [ 211.444528][ T6632] [ 211.447538][ T6634] CPU: 0 PID: 6634 Comm: syz.1.404 Not tainted syzkaller #0 [ 211.454829][ T6634] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 211.464901][ T6634] Call Trace: [ 211.468186][ T6634] [ 211.471122][ T6634] dump_stack_lvl+0x188/0x250 [ 211.475815][ T6634] ? show_regs_print_info+0x20/0x20 [ 211.481022][ T6634] ? load_image+0x400/0x400 [ 211.485629][ T6634] ? rcu_is_watching+0x11/0xa0 [ 211.490409][ T6634] ? __lock_acquire+0x7d10/0x7d10 [ 211.495570][ T6634] ? lock_release+0xb5/0x8a0 [ 211.500373][ T6634] ? __might_sleep+0xf0/0xf0 [ 211.504949][ T6634] should_fail+0x38c/0x4c0 [ 211.509359][ T6634] _copy_from_user+0x2e/0x170 [ 211.514021][ T6634] kstrtouint_from_user+0xd3/0x220 [ 211.519152][ T6634] ? rcu_is_watching+0x11/0xa0 [ 211.523988][ T6634] ? kstrtol_from_user+0x2a0/0x2a0 [ 211.529085][ T6634] ? lock_acquire+0xc8/0x400 [ 211.533660][ T6634] ? rcu_lock_release+0x20/0x20 [ 211.538518][ T6634] ? read_lock_is_recursive+0x10/0x10 [ 211.544036][ T6634] proc_fail_nth_write+0x8b/0x200 [ 211.549252][ T6634] ? proc_fail_nth_read+0x220/0x220 [ 211.554614][ T6634] ? common_file_perm+0x171/0x1c0 [ 211.559756][ T6634] ? preempt_count_add+0x8d/0x190 [ 211.564803][ T6634] ? proc_fail_nth_read+0x220/0x220 [ 211.570032][ T6634] vfs_write+0x30b/0xd60 [ 211.574280][ T6634] ? file_end_write+0x250/0x250 [ 211.579133][ T6634] ? rcu_is_watching+0x11/0xa0 [ 211.584019][ T6634] ? __fget_files+0x40f/0x480 [ 211.588683][ T6634] ? mutex_lock_nested+0x17/0x20 [ 211.593631][ T6634] ? __fdget_pos+0x2bf/0x370 [ 211.598318][ T6634] ? ksys_write+0x71/0x260 [ 211.602724][ T6634] ksys_write+0x152/0x260 [ 211.607041][ T6634] ? __ia32_sys_read+0x80/0x80 [ 211.611788][ T6634] ? rcu_is_watching+0x11/0xa0 [ 211.616642][ T6634] do_syscall_64+0x4c/0xa0 [ 211.621071][ T6634] ? clear_bhb_loop+0x30/0x80 [ 211.625844][ T6634] ? clear_bhb_loop+0x30/0x80 [ 211.630682][ T6634] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 211.636734][ T6634] RIP: 0033:0x7f3baf05d74e [ 211.641172][ T6634] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 211.660787][ T6634] RSP: 002b:00007f3bae2d6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 211.669213][ T6634] RAX: ffffffffffffffda RBX: 00007f3bae2d76c0 RCX: 00007f3baf05d74e [ 211.677180][ T6634] RDX: 0000000000000001 RSI: 00007f3bae2d70b0 RDI: 0000000000000005 [ 211.685185][ T6634] RBP: 00007f3bae2d70a0 R08: 0000000000000000 R09: 0000000000000000 2026/04/25 10:13:49 executed programs: 401 [ 211.693238][ T6634] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 211.701374][ T6634] R13: 000000000000006e R14: 00007f3baf241130 R15: 00007ffeabae9a08 [ 211.709437][ T6634] [ 211.713681][ T6639] FAULT_INJECTION: forcing a failure. [ 211.713681][ T6639] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 211.739778][ T6639] CPU: 0 PID: 6639 Comm: syz.4.405 Not tainted syzkaller #0 [ 211.745380][ T6640] FAULT_INJECTION: forcing a failure. [ 211.745380][ T6640] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 211.747156][ T6639] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 211.770375][ T6639] Call Trace: [ 211.773654][ T6639] [ 211.776665][ T6639] dump_stack_lvl+0x188/0x250 [ 211.781418][ T6639] ? show_regs_print_info+0x20/0x20 [ 211.786696][ T6639] ? load_image+0x400/0x400 [ 211.791184][ T6639] ? rcu_is_watching+0x11/0xa0 [ 211.795931][ T6639] ? __lock_acquire+0x7d10/0x7d10 [ 211.800968][ T6639] ? lock_release+0xb5/0x8a0 [ 211.805682][ T6639] ? __might_sleep+0xf0/0xf0 [ 211.810378][ T6639] should_fail+0x38c/0x4c0 [ 211.814843][ T6639] _copy_from_user+0x2e/0x170 [ 211.819558][ T6639] kstrtouint_from_user+0xd3/0x220 [ 211.824682][ T6639] ? rcu_is_watching+0x11/0xa0 [ 211.829519][ T6639] ? kstrtol_from_user+0x2a0/0x2a0 [ 211.834628][ T6639] ? lock_acquire+0xc8/0x400 [ 211.839206][ T6639] ? rcu_lock_release+0x20/0x20 [ 211.844164][ T6639] ? read_lock_is_recursive+0x10/0x10 [ 211.849543][ T6639] proc_fail_nth_write+0x8b/0x200 [ 211.854553][ T6639] ? proc_fail_nth_read+0x220/0x220 [ 211.859920][ T6639] ? common_file_perm+0x171/0x1c0 [ 211.864957][ T6639] ? preempt_count_add+0x8d/0x190 [ 211.869995][ T6639] ? proc_fail_nth_read+0x220/0x220 [ 211.875227][ T6639] vfs_write+0x30b/0xd60 [ 211.879552][ T6639] ? file_end_write+0x250/0x250 [ 211.884387][ T6639] ? rcu_is_watching+0x11/0xa0 [ 211.889138][ T6639] ? __fget_files+0x40f/0x480 [ 211.893946][ T6639] ? mutex_lock_nested+0x17/0x20 [ 211.898871][ T6639] ? __fdget_pos+0x2bf/0x370 [ 211.903442][ T6639] ? ksys_write+0x71/0x260 [ 211.907851][ T6639] ksys_write+0x152/0x260 [ 211.912296][ T6639] ? __ia32_sys_read+0x80/0x80 [ 211.917076][ T6639] ? rcu_is_watching+0x11/0xa0 [ 211.921833][ T6639] do_syscall_64+0x4c/0xa0 [ 211.926237][ T6639] ? clear_bhb_loop+0x30/0x80 [ 211.930910][ T6639] ? clear_bhb_loop+0x30/0x80 [ 211.935666][ T6639] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 211.941833][ T6639] RIP: 0033:0x7f16d038274e [ 211.946257][ T6639] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 211.966124][ T6639] RSP: 002b:00007f16cf61cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 211.974631][ T6639] RAX: ffffffffffffffda RBX: 00007f16cf61d6c0 RCX: 00007f16d038274e [ 211.982589][ T6639] RDX: 0000000000000001 RSI: 00007f16cf61d0b0 RDI: 0000000000000005 [ 211.990556][ T6639] RBP: 00007f16cf61d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 211.998675][ T6639] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 212.006652][ T6639] R13: 000000000000006e R14: 00007f16d0566058 R15: 00007ffc849792c8 [ 212.014618][ T6639] [ 212.022874][ T6640] CPU: 0 PID: 6640 Comm: syz.3.406 Not tainted syzkaller #0 [ 212.027076][ T6644] FAULT_INJECTION: forcing a failure. [ 212.027076][ T6644] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 212.030202][ T6640] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 212.053334][ T6640] Call Trace: [ 212.056649][ T6640] [ 212.059569][ T6640] dump_stack_lvl+0x188/0x250 [ 212.064269][ T6640] ? show_regs_print_info+0x20/0x20 [ 212.069464][ T6640] ? load_image+0x400/0x400 [ 212.074105][ T6640] ? rcu_is_watching+0x11/0xa0 [ 212.077737][ T6646] FAULT_INJECTION: forcing a failure. [ 212.077737][ T6646] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 212.078999][ T6640] ? __lock_acquire+0x7d10/0x7d10 [ 212.097057][ T6640] ? lock_release+0xb5/0x8a0 [ 212.101656][ T6640] ? __might_sleep+0xf0/0xf0 [ 212.106420][ T6640] should_fail+0x38c/0x4c0 [ 212.110846][ T6640] _copy_from_user+0x2e/0x170 [ 212.115515][ T6640] kstrtouint_from_user+0xd3/0x220 [ 212.120704][ T6640] ? rcu_is_watching+0x11/0xa0 [ 212.125461][ T6640] ? kstrtol_from_user+0x2a0/0x2a0 [ 212.130569][ T6640] ? lock_acquire+0xc8/0x400 [ 212.135191][ T6640] ? rcu_lock_release+0x20/0x20 [ 212.140045][ T6640] ? read_lock_is_recursive+0x10/0x10 [ 212.145443][ T6640] proc_fail_nth_write+0x8b/0x200 [ 212.150720][ T6640] ? proc_fail_nth_read+0x220/0x220 [ 212.155936][ T6640] ? common_file_perm+0x171/0x1c0 [ 212.161053][ T6640] ? preempt_count_add+0x8d/0x190 [ 212.166079][ T6640] ? proc_fail_nth_read+0x220/0x220 [ 212.171288][ T6640] vfs_write+0x30b/0xd60 [ 212.175528][ T6640] ? file_end_write+0x250/0x250 [ 212.180371][ T6640] ? rcu_is_watching+0x11/0xa0 [ 212.185145][ T6640] ? __fget_files+0x40f/0x480 [ 212.189996][ T6640] ? mutex_lock_nested+0x17/0x20 [ 212.195017][ T6640] ? __fdget_pos+0x2bf/0x370 [ 212.199660][ T6640] ? ksys_write+0x71/0x260 [ 212.204065][ T6640] ksys_write+0x152/0x260 [ 212.208393][ T6640] ? __ia32_sys_read+0x80/0x80 [ 212.213155][ T6640] ? rcu_is_watching+0x11/0xa0 [ 212.217916][ T6640] do_syscall_64+0x4c/0xa0 [ 212.222334][ T6640] ? clear_bhb_loop+0x30/0x80 [ 212.227005][ T6640] ? clear_bhb_loop+0x30/0x80 [ 212.231671][ T6640] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 212.237643][ T6640] RIP: 0033:0x7fbad61c174e [ 212.242121][ T6640] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 212.261729][ T6640] RSP: 002b:00007fbad545bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 212.270164][ T6640] RAX: ffffffffffffffda RBX: 00007fbad545c6c0 RCX: 00007fbad61c174e [ 212.278136][ T6640] RDX: 0000000000000001 RSI: 00007fbad545c0b0 RDI: 0000000000000005 [ 212.286105][ T6640] RBP: 00007fbad545c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 212.294068][ T6640] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 212.302039][ T6640] R13: 000000000000006e R14: 00007fbad63a5058 R15: 00007ffe2023ce08 [ 212.310014][ T6640] [ 212.313130][ T6646] CPU: 1 PID: 6646 Comm: syz.0.407 Not tainted syzkaller #0 [ 212.320506][ T6646] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 212.330558][ T6646] Call Trace: [ 212.333830][ T6646] [ 212.336751][ T6646] dump_stack_lvl+0x188/0x250 [ 212.341426][ T6646] ? show_regs_print_info+0x20/0x20 [ 212.346625][ T6646] ? load_image+0x400/0x400 [ 212.351309][ T6646] ? rcu_is_watching+0x11/0xa0 [ 212.356347][ T6646] ? __lock_acquire+0x7d10/0x7d10 [ 212.361382][ T6646] ? lock_release+0xb5/0x8a0 [ 212.365976][ T6646] ? __might_sleep+0xf0/0xf0 [ 212.370565][ T6646] should_fail+0x38c/0x4c0 [ 212.374987][ T6646] _copy_from_user+0x2e/0x170 [ 212.379744][ T6646] kstrtouint_from_user+0xd3/0x220 [ 212.384851][ T6646] ? rcu_is_watching+0x11/0xa0 [ 212.389603][ T6646] ? kstrtol_from_user+0x2a0/0x2a0 [ 212.394709][ T6646] ? lock_acquire+0xc8/0x400 [ 212.399298][ T6646] ? rcu_lock_release+0x20/0x20 [ 212.404148][ T6646] ? read_lock_is_recursive+0x10/0x10 [ 212.409526][ T6646] proc_fail_nth_write+0x8b/0x200 [ 212.414551][ T6646] ? proc_fail_nth_read+0x220/0x220 [ 212.419743][ T6646] ? common_file_perm+0x171/0x1c0 [ 212.424763][ T6646] ? preempt_count_add+0x8d/0x190 [ 212.429874][ T6646] ? proc_fail_nth_read+0x220/0x220 [ 212.435175][ T6646] vfs_write+0x30b/0xd60 [ 212.439773][ T6646] ? file_end_write+0x250/0x250 [ 212.444619][ T6646] ? rcu_is_watching+0x11/0xa0 [ 212.449379][ T6646] ? __fget_files+0x40f/0x480 [ 212.454059][ T6646] ? mutex_lock_nested+0x17/0x20 [ 212.458992][ T6646] ? __fdget_pos+0x2bf/0x370 [ 212.463664][ T6646] ? ksys_write+0x71/0x260 [ 212.468079][ T6646] ksys_write+0x152/0x260 [ 212.472408][ T6646] ? __ia32_sys_read+0x80/0x80 [ 212.477166][ T6646] ? rcu_is_watching+0x11/0xa0 [ 212.481930][ T6646] do_syscall_64+0x4c/0xa0 [ 212.486452][ T6646] ? clear_bhb_loop+0x30/0x80 [ 212.491144][ T6646] ? clear_bhb_loop+0x30/0x80 [ 212.495832][ T6646] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 212.501740][ T6646] RIP: 0033:0x7f864b3a574e [ 212.506166][ T6646] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 212.525953][ T6646] RSP: 002b:00007f864a63fff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 212.534382][ T6646] RAX: ffffffffffffffda RBX: 00007f864a6406c0 RCX: 00007f864b3a574e [ 212.542583][ T6646] RDX: 0000000000000001 RSI: 00007f864a6400b0 RDI: 0000000000000005 [ 212.550663][ T6646] RBP: 00007f864a6400a0 R08: 0000000000000000 R09: 0000000000000000 [ 212.558740][ T6646] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 212.567327][ T6646] R13: 000000000000006e R14: 00007f864b589058 R15: 00007ffeb91066c8 [ 212.575323][ T6646] [ 212.578359][ T6644] CPU: 0 PID: 6644 Comm: syz.2.408 Not tainted syzkaller #0 [ 212.585656][ T6644] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 212.595757][ T6644] Call Trace: [ 212.599058][ T6644] [ 212.601980][ T6644] dump_stack_lvl+0x188/0x250 [ 212.606654][ T6644] ? show_regs_print_info+0x20/0x20 [ 212.611939][ T6644] ? load_image+0x400/0x400 [ 212.616535][ T6644] ? rcu_is_watching+0x11/0xa0 [ 212.621306][ T6644] ? __lock_acquire+0x7d10/0x7d10 [ 212.626336][ T6644] ? lock_release+0xb5/0x8a0 [ 212.630924][ T6644] ? __might_sleep+0xf0/0xf0 [ 212.635529][ T6644] should_fail+0x38c/0x4c0 [ 212.639945][ T6644] _copy_from_user+0x2e/0x170 [ 212.644618][ T6644] kstrtouint_from_user+0xd3/0x220 [ 212.649812][ T6644] ? rcu_is_watching+0x11/0xa0 [ 212.654569][ T6644] ? kstrtol_from_user+0x2a0/0x2a0 [ 212.659665][ T6644] ? lock_acquire+0xc8/0x400 [ 212.664249][ T6644] ? rcu_lock_release+0x20/0x20 [ 212.669083][ T6644] ? read_lock_is_recursive+0x10/0x10 [ 212.674448][ T6644] proc_fail_nth_write+0x8b/0x200 [ 212.679465][ T6644] ? proc_fail_nth_read+0x220/0x220 [ 212.684656][ T6644] ? common_file_perm+0x171/0x1c0 [ 212.689697][ T6644] ? preempt_count_add+0x8d/0x190 [ 212.694850][ T6644] ? proc_fail_nth_read+0x220/0x220 [ 212.700170][ T6644] vfs_write+0x30b/0xd60 [ 212.704418][ T6644] ? file_end_write+0x250/0x250 [ 212.709268][ T6644] ? rcu_is_watching+0x11/0xa0 [ 212.714032][ T6644] ? __fget_files+0x40f/0x480 [ 212.719416][ T6644] ? mutex_lock_nested+0x17/0x20 [ 212.724360][ T6644] ? __fdget_pos+0x2bf/0x370 [ 212.728948][ T6644] ? ksys_write+0x71/0x260 [ 212.733362][ T6644] ksys_write+0x152/0x260 [ 212.737705][ T6644] ? __ia32_sys_read+0x80/0x80 [ 212.742465][ T6644] ? rcu_is_watching+0x11/0xa0 [ 212.747222][ T6644] do_syscall_64+0x4c/0xa0 [ 212.751633][ T6644] ? clear_bhb_loop+0x30/0x80 [ 212.756296][ T6644] ? clear_bhb_loop+0x30/0x80 [ 212.760971][ T6644] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 212.766880][ T6644] RIP: 0033:0x7fbdb3b2c74e [ 212.771303][ T6644] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 212.791087][ T6644] RSP: 002b:00007fbdb2dc6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 212.799775][ T6644] RAX: ffffffffffffffda RBX: 00007fbdb2dc76c0 RCX: 00007fbdb3b2c74e [ 212.807931][ T6644] RDX: 0000000000000001 RSI: 00007fbdb2dc70b0 RDI: 0000000000000005 [ 212.815937][ T6644] RBP: 00007fbdb2dc70a0 R08: 0000000000000000 R09: 0000000000000000 [ 212.824068][ T6644] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 212.832034][ T6644] R13: 000000000000006e R14: 00007fbdb3d10058 R15: 00007ffc8d3c7768 [ 212.839999][ T6644] [ 212.884484][ T6654] FAULT_INJECTION: forcing a failure. [ 212.884484][ T6654] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 212.900397][ T6650] FAULT_INJECTION: forcing a failure. [ 212.900397][ T6650] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 212.914688][ T6654] CPU: 1 PID: 6654 Comm: syz.2.411 Not tainted syzkaller #0 [ 212.916390][ T6653] FAULT_INJECTION: forcing a failure. [ 212.916390][ T6653] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 212.922011][ T6654] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 212.945326][ T6654] Call Trace: [ 212.948788][ T6654] [ 212.951849][ T6654] dump_stack_lvl+0x188/0x250 [ 212.956640][ T6654] ? show_regs_print_info+0x20/0x20 [ 212.961978][ T6654] ? load_image+0x400/0x400 [ 212.966532][ T6654] ? rcu_is_watching+0x11/0xa0 [ 212.971416][ T6654] ? __lock_acquire+0x7d10/0x7d10 [ 212.976445][ T6654] ? lock_release+0xb5/0x8a0 [ 212.981068][ T6654] ? __might_sleep+0xf0/0xf0 [ 212.985747][ T6654] should_fail+0x38c/0x4c0 [ 212.990163][ T6654] _copy_from_user+0x2e/0x170 [ 212.994834][ T6654] kstrtouint_from_user+0xd3/0x220 [ 213.000066][ T6654] ? rcu_is_watching+0x11/0xa0 [ 213.004875][ T6654] ? kstrtol_from_user+0x2a0/0x2a0 [ 213.010068][ T6654] ? lock_acquire+0xc8/0x400 [ 213.014665][ T6654] ? rcu_lock_release+0x20/0x20 [ 213.019515][ T6654] ? read_lock_is_recursive+0x10/0x10 [ 213.024881][ T6654] proc_fail_nth_write+0x8b/0x200 [ 213.029915][ T6654] ? proc_fail_nth_read+0x220/0x220 [ 213.035134][ T6654] ? common_file_perm+0x171/0x1c0 [ 213.039292][ T6649] FAULT_INJECTION: forcing a failure. [ 213.039292][ T6649] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 213.040180][ T6654] ? preempt_count_add+0x8d/0x190 [ 213.058190][ T6654] ? proc_fail_nth_read+0x220/0x220 [ 213.063407][ T6654] vfs_write+0x30b/0xd60 [ 213.067666][ T6654] ? file_end_write+0x250/0x250 [ 213.072548][ T6654] ? rcu_is_watching+0x11/0xa0 [ 213.077347][ T6654] ? __fget_files+0x40f/0x480 [ 213.082049][ T6654] ? mutex_lock_nested+0x17/0x20 [ 213.086998][ T6654] ? __fdget_pos+0x2bf/0x370 [ 213.091635][ T6654] ? ksys_write+0x71/0x260 [ 213.096059][ T6654] ksys_write+0x152/0x260 [ 213.100398][ T6654] ? __ia32_sys_read+0x80/0x80 [ 213.105179][ T6654] ? rcu_is_watching+0x11/0xa0 [ 213.109943][ T6654] do_syscall_64+0x4c/0xa0 [ 213.114376][ T6654] ? clear_bhb_loop+0x30/0x80 [ 213.119231][ T6654] ? clear_bhb_loop+0x30/0x80 [ 213.123914][ T6654] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 213.129892][ T6654] RIP: 0033:0x7fbdb3b2c74e [ 213.134306][ T6654] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 213.154228][ T6654] RSP: 002b:00007fbdb2de7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 213.162819][ T6654] RAX: ffffffffffffffda RBX: 00007fbdb2de86c0 RCX: 00007fbdb3b2c74e [ 213.170806][ T6654] RDX: 0000000000000001 RSI: 00007fbdb2de80b0 RDI: 0000000000000007 [ 213.178793][ T6654] RBP: 00007fbdb2de80a0 R08: 0000000000000000 R09: 0000000000000000 [ 213.186768][ T6654] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 213.195090][ T6654] R13: 000000000000000b R14: 00007fbdb3d0ff80 R15: 00007ffc8d3c7768 [ 213.203093][ T6654] [ 213.206127][ T6650] CPU: 0 PID: 6650 Comm: syz.4.409 Not tainted syzkaller #0 [ 213.213433][ T6650] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 213.213909][ T6657] FAULT_INJECTION: forcing a failure. [ 213.213909][ T6657] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 213.223581][ T6650] Call Trace: [ 213.223593][ T6650] [ 213.223600][ T6650] dump_stack_lvl+0x188/0x250 [ 213.223624][ T6650] ? show_regs_print_info+0x20/0x20 [ 213.223639][ T6650] ? load_image+0x400/0x400 [ 213.257199][ T6650] ? rcu_is_watching+0x11/0xa0 [ 213.261974][ T6650] ? __lock_acquire+0x7d10/0x7d10 [ 213.267002][ T6650] ? lock_release+0xb5/0x8a0 [ 213.271589][ T6650] ? __might_sleep+0xf0/0xf0 [ 213.276172][ T6650] should_fail+0x38c/0x4c0 [ 213.280665][ T6650] _copy_from_user+0x2e/0x170 [ 213.285333][ T6650] kstrtouint_from_user+0xd3/0x220 [ 213.290459][ T6650] ? rcu_is_watching+0x11/0xa0 [ 213.295206][ T6650] ? kstrtol_from_user+0x2a0/0x2a0 [ 213.300394][ T6650] ? lock_acquire+0xc8/0x400 [ 213.305242][ T6650] ? rcu_lock_release+0x20/0x20 [ 213.310083][ T6650] ? read_lock_is_recursive+0x10/0x10 [ 213.315442][ T6650] proc_fail_nth_write+0x8b/0x200 [ 213.320458][ T6650] ? proc_fail_nth_read+0x220/0x220 [ 213.325641][ T6650] ? common_file_perm+0x171/0x1c0 [ 213.330647][ T6650] ? preempt_count_add+0x8d/0x190 [ 213.335678][ T6650] ? proc_fail_nth_read+0x220/0x220 [ 213.340960][ T6650] vfs_write+0x30b/0xd60 [ 213.345215][ T6650] ? file_end_write+0x250/0x250 [ 213.350053][ T6650] ? rcu_is_watching+0x11/0xa0 [ 213.354819][ T6650] ? __fget_files+0x40f/0x480 [ 213.359567][ T6650] ? mutex_lock_nested+0x17/0x20 [ 213.364499][ T6650] ? __fdget_pos+0x2bf/0x370 [ 213.369070][ T6650] ? ksys_write+0x71/0x260 [ 213.373471][ T6650] ksys_write+0x152/0x260 [ 213.377923][ T6650] ? __ia32_sys_read+0x80/0x80 [ 213.382667][ T6650] ? rcu_is_watching+0x11/0xa0 [ 213.387418][ T6650] do_syscall_64+0x4c/0xa0 [ 213.391914][ T6650] ? clear_bhb_loop+0x30/0x80 [ 213.396659][ T6650] ? clear_bhb_loop+0x30/0x80 [ 213.401319][ T6650] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 213.407201][ T6650] RIP: 0033:0x7f16d038274e [ 213.411601][ T6650] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 213.431213][ T6650] RSP: 002b:00007f16cf63dff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 213.439652][ T6650] RAX: ffffffffffffffda RBX: 00007f16cf63e6c0 RCX: 00007f16d038274e [ 213.447640][ T6650] RDX: 0000000000000001 RSI: 00007f16cf63e0b0 RDI: 0000000000000007 [ 213.455596][ T6650] RBP: 00007f16cf63e0a0 R08: 0000000000000000 R09: 0000000000000000 [ 213.463560][ T6650] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 213.471613][ T6650] R13: 000000000000000b R14: 00007f16d0565f80 R15: 00007ffc849792c8 [ 213.479597][ T6650] [ 213.487851][ T6649] CPU: 1 PID: 6649 Comm: syz.3.412 Not tainted syzkaller #0 [ 213.495181][ T6649] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 213.505243][ T6649] Call Trace: [ 213.508530][ T6649] [ 213.511462][ T6649] dump_stack_lvl+0x188/0x250 [ 213.516269][ T6649] ? show_regs_print_info+0x20/0x20 [ 213.521955][ T6649] ? load_image+0x400/0x400 [ 213.526487][ T6649] ? rcu_is_watching+0x11/0xa0 [ 213.531277][ T6649] ? __lock_acquire+0x7d10/0x7d10 [ 213.536323][ T6649] ? lock_release+0xb5/0x8a0 [ 213.540935][ T6649] ? __might_sleep+0xf0/0xf0 [ 213.545621][ T6649] should_fail+0x38c/0x4c0 [ 213.550150][ T6649] _copy_from_user+0x2e/0x170 [ 213.554846][ T6649] kstrtouint_from_user+0xd3/0x220 [ 213.560534][ T6649] ? rcu_is_watching+0x11/0xa0 [ 213.565485][ T6649] ? kstrtol_from_user+0x2a0/0x2a0 [ 213.570640][ T6649] ? lock_acquire+0xc8/0x400 [ 213.575243][ T6649] ? rcu_lock_release+0x20/0x20 [ 213.580123][ T6649] ? read_lock_is_recursive+0x10/0x10 [ 213.585534][ T6649] proc_fail_nth_write+0x8b/0x200 [ 213.590578][ T6649] ? proc_fail_nth_read+0x220/0x220 [ 213.595774][ T6649] ? common_file_perm+0x171/0x1c0 [ 213.600798][ T6649] ? preempt_count_add+0x8d/0x190 [ 213.605826][ T6649] ? proc_fail_nth_read+0x220/0x220 [ 213.611041][ T6649] vfs_write+0x30b/0xd60 [ 213.615291][ T6649] ? file_end_write+0x250/0x250 [ 213.620148][ T6649] ? rcu_is_watching+0x11/0xa0 [ 213.624938][ T6649] ? __fget_files+0x40f/0x480 [ 213.629625][ T6649] ? mutex_lock_nested+0x17/0x20 [ 213.634571][ T6649] ? __fdget_pos+0x2bf/0x370 [ 213.639184][ T6649] ? ksys_write+0x71/0x260 [ 213.643618][ T6649] ksys_write+0x152/0x260 [ 213.647951][ T6649] ? __ia32_sys_read+0x80/0x80 [ 213.652721][ T6649] ? rcu_is_watching+0x11/0xa0 [ 213.657501][ T6649] do_syscall_64+0x4c/0xa0 [ 213.661925][ T6649] ? clear_bhb_loop+0x30/0x80 [ 213.666622][ T6649] ? clear_bhb_loop+0x30/0x80 [ 213.671430][ T6649] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 213.677386][ T6649] RIP: 0033:0x7fbad61c174e [ 213.681815][ T6649] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 213.701900][ T6649] RSP: 002b:00007fbad547cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 213.710328][ T6649] RAX: ffffffffffffffda RBX: 00007fbad547d6c0 RCX: 00007fbad61c174e [ 213.718404][ T6649] RDX: 0000000000000001 RSI: 00007fbad547d0b0 RDI: 0000000000000007 [ 213.726388][ T6649] RBP: 00007fbad547d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 213.734406][ T6649] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 213.742388][ T6649] R13: 000000000000000b R14: 00007fbad63a4f80 R15: 00007ffe2023ce08 [ 213.750379][ T6649] [ 213.753479][ T6657] CPU: 0 PID: 6657 Comm: syz.1.410 Not tainted syzkaller #0 [ 213.760859][ T6657] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 213.770909][ T6657] Call Trace: [ 213.774216][ T6657] [ 213.777227][ T6657] dump_stack_lvl+0x188/0x250 [ 213.781921][ T6657] ? show_regs_print_info+0x20/0x20 [ 213.787126][ T6657] ? load_image+0x400/0x400 [ 213.791709][ T6657] ? rcu_is_watching+0x11/0xa0 [ 213.796479][ T6657] ? __lock_acquire+0x7d10/0x7d10 [ 213.801521][ T6657] ? lock_release+0xb5/0x8a0 [ 213.806108][ T6657] ? __might_sleep+0xf0/0xf0 [ 213.810786][ T6657] should_fail+0x38c/0x4c0 [ 213.815194][ T6657] _copy_from_user+0x2e/0x170 [ 213.819854][ T6657] kstrtouint_from_user+0xd3/0x220 [ 213.824951][ T6657] ? rcu_is_watching+0x11/0xa0 [ 213.829696][ T6657] ? kstrtol_from_user+0x2a0/0x2a0 [ 213.834794][ T6657] ? lock_acquire+0xc8/0x400 [ 213.839367][ T6657] ? rcu_lock_release+0x20/0x20 [ 213.844210][ T6657] ? read_lock_is_recursive+0x10/0x10 [ 213.849694][ T6657] proc_fail_nth_write+0x8b/0x200 [ 213.855204][ T6657] ? proc_fail_nth_read+0x220/0x220 [ 213.860507][ T6657] ? common_file_perm+0x171/0x1c0 [ 213.865706][ T6657] ? preempt_count_add+0x8d/0x190 [ 213.870743][ T6657] ? proc_fail_nth_read+0x220/0x220 [ 213.875951][ T6657] vfs_write+0x30b/0xd60 [ 213.880320][ T6657] ? file_end_write+0x250/0x250 [ 213.885177][ T6657] ? rcu_is_watching+0x11/0xa0 [ 213.889955][ T6657] ? __fget_files+0x40f/0x480 [ 213.894646][ T6657] ? mutex_lock_nested+0x17/0x20 [ 213.899692][ T6657] ? __fdget_pos+0x2bf/0x370 [ 213.904325][ T6657] ? ksys_write+0x71/0x260 [ 213.908885][ T6657] ksys_write+0x152/0x260 [ 213.913237][ T6657] ? __ia32_sys_read+0x80/0x80 [ 213.918025][ T6657] ? rcu_is_watching+0x11/0xa0 [ 213.922802][ T6657] do_syscall_64+0x4c/0xa0 [ 213.927296][ T6657] ? clear_bhb_loop+0x30/0x80 [ 213.931973][ T6657] ? clear_bhb_loop+0x30/0x80 [ 213.936645][ T6657] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 213.942712][ T6657] RIP: 0033:0x7f3baf05d74e [ 213.947327][ T6657] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 213.967191][ T6657] RSP: 002b:00007f3bae2f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 213.975678][ T6657] RAX: ffffffffffffffda RBX: 00007f3bae2f86c0 RCX: 00007f3baf05d74e [ 213.983649][ T6657] RDX: 0000000000000001 RSI: 00007f3bae2f80b0 RDI: 0000000000000005 [ 213.991622][ T6657] RBP: 00007f3bae2f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 213.999590][ T6657] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 214.007559][ T6657] R13: 000000000000006e R14: 00007f3baf241058 R15: 00007ffeabae9a08 [ 214.015522][ T6657] [ 214.032861][ T6653] CPU: 1 PID: 6653 Comm: syz.0.413 Not tainted syzkaller #0 [ 214.040261][ T6653] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 214.050588][ T6653] Call Trace: [ 214.053894][ T6653] [ 214.056832][ T6653] dump_stack_lvl+0x188/0x250 [ 214.061524][ T6653] ? show_regs_print_info+0x20/0x20 [ 214.066740][ T6653] ? load_image+0x400/0x400 [ 214.071247][ T6653] ? rcu_is_watching+0x11/0xa0 [ 214.076010][ T6653] ? __lock_acquire+0x7d10/0x7d10 [ 214.081159][ T6653] ? lock_release+0xb5/0x8a0 [ 214.085765][ T6653] ? __might_sleep+0xf0/0xf0 [ 214.090370][ T6653] should_fail+0x38c/0x4c0 [ 214.094875][ T6653] _copy_from_user+0x2e/0x170 [ 214.099692][ T6653] kstrtouint_from_user+0xd3/0x220 [ 214.104818][ T6653] ? rcu_is_watching+0x11/0xa0 [ 214.109577][ T6653] ? kstrtol_from_user+0x2a0/0x2a0 [ 214.114681][ T6653] ? lock_acquire+0xc8/0x400 [ 214.119350][ T6653] ? rcu_lock_release+0x20/0x20 [ 214.124290][ T6653] ? read_lock_is_recursive+0x10/0x10 [ 214.129650][ T6653] proc_fail_nth_write+0x8b/0x200 [ 214.134765][ T6653] ? proc_fail_nth_read+0x220/0x220 [ 214.140041][ T6653] ? common_file_perm+0x171/0x1c0 [ 214.145057][ T6653] ? preempt_count_add+0x8d/0x190 [ 214.150177][ T6653] ? proc_fail_nth_read+0x220/0x220 [ 214.155358][ T6653] vfs_write+0x30b/0xd60 [ 214.159594][ T6653] ? file_end_write+0x250/0x250 [ 214.164439][ T6653] ? rcu_is_watching+0x11/0xa0 [ 214.169362][ T6653] ? __fget_files+0x40f/0x480 [ 214.174023][ T6653] ? mutex_lock_nested+0x17/0x20 [ 214.178945][ T6653] ? __fdget_pos+0x2bf/0x370 [ 214.183513][ T6653] ? ksys_write+0x71/0x260 [ 214.187933][ T6653] ksys_write+0x152/0x260 [ 214.192275][ T6653] ? __ia32_sys_read+0x80/0x80 [ 214.197034][ T6653] ? rcu_is_watching+0x11/0xa0 [ 214.201790][ T6653] do_syscall_64+0x4c/0xa0 [ 214.206202][ T6653] ? clear_bhb_loop+0x30/0x80 [ 214.210866][ T6653] ? clear_bhb_loop+0x30/0x80 [ 214.215523][ T6653] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 214.221398][ T6653] RIP: 0033:0x7f864b3a574e [ 214.225805][ T6653] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 214.245567][ T6653] RSP: 002b:00007f864a660ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 214.253978][ T6653] RAX: ffffffffffffffda RBX: 00007f864a6616c0 RCX: 00007f864b3a574e [ 214.261935][ T6653] RDX: 0000000000000001 RSI: 00007f864a6610b0 RDI: 0000000000000007 [ 214.269892][ T6653] RBP: 00007f864a6610a0 R08: 0000000000000000 R09: 0000000000000000 [ 214.277846][ T6653] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 214.285800][ T6653] R13: 000000000000000b R14: 00007f864b588f80 R15: 00007ffeb91066c8 [ 214.293850][ T6653] [ 214.323968][ T6659] FAULT_INJECTION: forcing a failure. [ 214.323968][ T6659] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 214.323968][ T6663] FAULT_INJECTION: forcing a failure. [ 214.323968][ T6663] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 214.323998][ T6659] CPU: 1 PID: 6659 Comm: syz.2.414 Not tainted syzkaller #0 [ 214.357395][ T6659] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 214.367454][ T6659] Call Trace: [ 214.370724][ T6659] [ 214.373642][ T6659] dump_stack_lvl+0x188/0x250 [ 214.378404][ T6659] ? show_regs_print_info+0x20/0x20 [ 214.383596][ T6659] ? load_image+0x400/0x400 [ 214.388106][ T6659] ? rcu_is_watching+0x11/0xa0 [ 214.392872][ T6659] ? __lock_acquire+0x7d10/0x7d10 [ 214.397895][ T6659] ? lock_release+0xb5/0x8a0 [ 214.402489][ T6659] ? __might_sleep+0xf0/0xf0 [ 214.407351][ T6659] should_fail+0x38c/0x4c0 [ 214.411853][ T6659] _copy_from_user+0x2e/0x170 [ 214.413146][ T6665] FAULT_INJECTION: forcing a failure. [ 214.413146][ T6665] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 214.416522][ T6659] kstrtouint_from_user+0xd3/0x220 [ 214.434819][ T6659] ? rcu_is_watching+0x11/0xa0 [ 214.439575][ T6659] ? kstrtol_from_user+0x2a0/0x2a0 [ 214.444669][ T6659] ? lock_acquire+0xc8/0x400 [ 214.449366][ T6659] ? rcu_lock_release+0x20/0x20 [ 214.454198][ T6659] ? read_lock_is_recursive+0x10/0x10 [ 214.459560][ T6659] proc_fail_nth_write+0x8b/0x200 [ 214.464569][ T6659] ? proc_fail_nth_read+0x220/0x220 [ 214.469762][ T6659] ? common_file_perm+0x171/0x1c0 [ 214.474768][ T6659] ? preempt_count_add+0x8d/0x190 [ 214.479866][ T6659] ? proc_fail_nth_read+0x220/0x220 [ 214.485136][ T6659] vfs_write+0x30b/0xd60 [ 214.489361][ T6659] ? file_end_write+0x250/0x250 [ 214.494190][ T6659] ? rcu_is_watching+0x11/0xa0 [ 214.498940][ T6659] ? __fget_files+0x40f/0x480 [ 214.503610][ T6659] ? mutex_lock_nested+0x17/0x20 [ 214.508550][ T6659] ? __fdget_pos+0x2bf/0x370 [ 214.513221][ T6659] ? ksys_write+0x71/0x260 [ 214.517638][ T6659] ksys_write+0x152/0x260 [ 214.522143][ T6659] ? __ia32_sys_read+0x80/0x80 [ 214.526890][ T6659] ? rcu_is_watching+0x11/0xa0 [ 214.531644][ T6659] do_syscall_64+0x4c/0xa0 [ 214.536045][ T6659] ? clear_bhb_loop+0x30/0x80 [ 214.540726][ T6659] ? clear_bhb_loop+0x30/0x80 [ 214.545438][ T6659] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 214.551417][ T6659] RIP: 0033:0x7fbdb3b2c74e [ 214.555838][ T6659] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 214.575701][ T6659] RSP: 002b:00007fbdb2de7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 214.584101][ T6659] RAX: ffffffffffffffda RBX: 00007fbdb2de86c0 RCX: 00007fbdb3b2c74e [ 214.592144][ T6659] RDX: 0000000000000001 RSI: 00007fbdb2de80b0 RDI: 0000000000000007 [ 214.600188][ T6659] RBP: 00007fbdb2de80a0 R08: 0000000000000000 R09: 0000000000000000 [ 214.608154][ T6659] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 214.616107][ T6659] R13: 000000000000000b R14: 00007fbdb3d0ff80 R15: 00007ffc8d3c7768 [ 214.624253][ T6659] [ 214.633986][ T6665] CPU: 1 PID: 6665 Comm: syz.1.416 Not tainted syzkaller #0 [ 214.636302][ T6668] FAULT_INJECTION: forcing a failure. [ 214.636302][ T6668] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 214.641316][ T6665] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 214.641332][ T6665] Call Trace: [ 214.641339][ T6665] [ 214.641346][ T6665] dump_stack_lvl+0x188/0x250 [ 214.641371][ T6665] ? show_regs_print_info+0x20/0x20 [ 214.680612][ T6665] ? load_image+0x400/0x400 [ 214.685144][ T6665] ? rcu_is_watching+0x11/0xa0 [ 214.686890][ T6671] FAULT_INJECTION: forcing a failure. [ 214.686890][ T6671] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 214.689923][ T6665] ? __lock_acquire+0x7d10/0x7d10 [ 214.689953][ T6665] ? lock_release+0xb5/0x8a0 [ 214.712728][ T6665] ? __might_sleep+0xf0/0xf0 [ 214.717338][ T6665] should_fail+0x38c/0x4c0 [ 214.721773][ T6665] _copy_from_user+0x2e/0x170 [ 214.726455][ T6665] kstrtouint_from_user+0xd3/0x220 [ 214.731573][ T6665] ? rcu_is_watching+0x11/0xa0 [ 214.736346][ T6665] ? kstrtol_from_user+0x2a0/0x2a0 [ 214.737061][ T6672] FAULT_INJECTION: forcing a failure. [ 214.737061][ T6672] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 214.741467][ T6665] ? lock_acquire+0xc8/0x400 [ 214.741495][ T6665] ? rcu_lock_release+0x20/0x20 [ 214.764030][ T6665] ? read_lock_is_recursive+0x10/0x10 [ 214.769496][ T6665] proc_fail_nth_write+0x8b/0x200 [ 214.774607][ T6665] ? proc_fail_nth_read+0x220/0x220 [ 214.780047][ T6665] ? common_file_perm+0x171/0x1c0 [ 214.785158][ T6665] ? preempt_count_add+0x8d/0x190 [ 214.790180][ T6665] ? proc_fail_nth_read+0x220/0x220 [ 214.795375][ T6665] vfs_write+0x30b/0xd60 [ 214.799614][ T6665] ? file_end_write+0x250/0x250 [ 214.804462][ T6665] ? rcu_is_watching+0x11/0xa0 [ 214.809230][ T6665] ? __fget_files+0x40f/0x480 [ 214.813907][ T6665] ? mutex_lock_nested+0x17/0x20 [ 214.818858][ T6665] ? __fdget_pos+0x2bf/0x370 [ 214.823450][ T6665] ? ksys_write+0x71/0x260 [ 214.827869][ T6665] ksys_write+0x152/0x260 [ 214.832460][ T6665] ? __ia32_sys_read+0x80/0x80 [ 214.837335][ T6665] ? rcu_is_watching+0x11/0xa0 [ 214.842103][ T6665] do_syscall_64+0x4c/0xa0 [ 214.846517][ T6665] ? clear_bhb_loop+0x30/0x80 [ 214.851190][ T6665] ? clear_bhb_loop+0x30/0x80 [ 214.855870][ T6665] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 214.861873][ T6665] RIP: 0033:0x7f3baf05d74e [ 214.866286][ T6665] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 214.886131][ T6665] RSP: 002b:00007f3bae318ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 214.894557][ T6665] RAX: ffffffffffffffda RBX: 00007f3bae3196c0 RCX: 00007f3baf05d74e [ 214.902619][ T6665] RDX: 0000000000000001 RSI: 00007f3bae3190b0 RDI: 0000000000000007 [ 214.910686][ T6665] RBP: 00007f3bae3190a0 R08: 0000000000000000 R09: 0000000000000000 [ 214.918911][ T6665] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 214.926889][ T6665] R13: 000000000000000b R14: 00007f3baf240f80 R15: 00007ffeabae9a08 [ 214.934903][ T6665] [ 214.940545][ T6672] CPU: 0 PID: 6672 Comm: syz.2.419 Not tainted syzkaller #0 [ 214.947851][ T6672] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 214.958019][ T6672] Call Trace: [ 214.961290][ T6672] [ 214.964205][ T6672] dump_stack_lvl+0x188/0x250 [ 214.968903][ T6672] ? show_regs_print_info+0x20/0x20 [ 214.974118][ T6672] ? load_image+0x400/0x400 [ 214.978628][ T6672] ? rcu_is_watching+0x11/0xa0 [ 214.983380][ T6672] ? __lock_acquire+0x7d10/0x7d10 [ 214.988479][ T6672] ? lock_release+0xb5/0x8a0 [ 214.993063][ T6672] ? __might_sleep+0xf0/0xf0 [ 214.997640][ T6672] should_fail+0x38c/0x4c0 [ 215.002047][ T6672] _copy_from_user+0x2e/0x170 [ 215.006709][ T6672] kstrtouint_from_user+0xd3/0x220 [ 215.011806][ T6672] ? rcu_is_watching+0x11/0xa0 [ 215.016556][ T6672] ? kstrtol_from_user+0x2a0/0x2a0 [ 215.021652][ T6672] ? lock_acquire+0xc8/0x400 [ 215.026249][ T6672] ? rcu_lock_release+0x20/0x20 [ 215.031102][ T6672] ? read_lock_is_recursive+0x10/0x10 [ 215.036462][ T6672] proc_fail_nth_write+0x8b/0x200 [ 215.041473][ T6672] ? proc_fail_nth_read+0x220/0x220 [ 215.046652][ T6672] ? common_file_perm+0x171/0x1c0 [ 215.051712][ T6672] ? preempt_count_add+0x8d/0x190 [ 215.056723][ T6672] ? proc_fail_nth_read+0x220/0x220 [ 215.061921][ T6672] vfs_write+0x30b/0xd60 [ 215.066177][ T6672] ? file_end_write+0x250/0x250 [ 215.071009][ T6672] ? rcu_is_watching+0x11/0xa0 [ 215.075757][ T6672] ? __fget_files+0x40f/0x480 [ 215.080415][ T6672] ? mutex_lock_nested+0x17/0x20 [ 215.085348][ T6672] ? __fdget_pos+0x2bf/0x370 [ 215.089959][ T6672] ? ksys_write+0x71/0x260 [ 215.094363][ T6672] ksys_write+0x152/0x260 [ 215.098679][ T6672] ? __ia32_sys_read+0x80/0x80 [ 215.103426][ T6672] ? rcu_is_watching+0x11/0xa0 [ 215.108206][ T6672] do_syscall_64+0x4c/0xa0 [ 215.112692][ T6672] ? clear_bhb_loop+0x30/0x80 [ 215.117640][ T6672] ? clear_bhb_loop+0x30/0x80 [ 215.122429][ T6672] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 215.128314][ T6672] RIP: 0033:0x7fbdb3b2c74e [ 215.132716][ T6672] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 215.152317][ T6672] RSP: 002b:00007fbdb2dc6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 215.160866][ T6672] RAX: ffffffffffffffda RBX: 00007fbdb2dc76c0 RCX: 00007fbdb3b2c74e [ 215.168919][ T6672] RDX: 0000000000000001 RSI: 00007fbdb2dc70b0 RDI: 0000000000000004 [ 215.176877][ T6672] RBP: 00007fbdb2dc70a0 R08: 0000000000000000 R09: 0000000000000000 [ 215.184922][ T6672] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 215.192877][ T6672] R13: 000000000000006e R14: 00007fbdb3d10058 R15: 00007ffc8d3c7768 [ 215.200864][ T6672] [ 215.210577][ T6668] CPU: 1 PID: 6668 Comm: syz.3.415 Not tainted syzkaller #0 [ 215.218074][ T6668] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 215.228408][ T6668] Call Trace: [ 215.231693][ T6668] [ 215.234610][ T6668] dump_stack_lvl+0x188/0x250 [ 215.239280][ T6668] ? show_regs_print_info+0x20/0x20 [ 215.244463][ T6668] ? load_image+0x400/0x400 [ 215.248950][ T6668] ? rcu_is_watching+0x11/0xa0 [ 215.253704][ T6668] ? __lock_acquire+0x7d10/0x7d10 [ 215.258721][ T6668] ? lock_release+0xb5/0x8a0 [ 215.263299][ T6668] ? __might_sleep+0xf0/0xf0 [ 215.267956][ T6668] should_fail+0x38c/0x4c0 [ 215.272370][ T6668] _copy_from_user+0x2e/0x170 [ 215.277062][ T6668] kstrtouint_from_user+0xd3/0x220 [ 215.282184][ T6668] ? rcu_is_watching+0x11/0xa0 [ 215.286943][ T6668] ? kstrtol_from_user+0x2a0/0x2a0 [ 215.292622][ T6668] ? lock_acquire+0xc8/0x400 [ 215.297227][ T6668] ? rcu_lock_release+0x20/0x20 [ 215.302151][ T6668] ? read_lock_is_recursive+0x10/0x10 [ 215.307525][ T6668] proc_fail_nth_write+0x8b/0x200 [ 215.312557][ T6668] ? proc_fail_nth_read+0x220/0x220 [ 215.317737][ T6668] ? common_file_perm+0x171/0x1c0 [ 215.322753][ T6668] ? preempt_count_add+0x8d/0x190 [ 215.327861][ T6668] ? proc_fail_nth_read+0x220/0x220 [ 215.333060][ T6668] vfs_write+0x30b/0xd60 [ 215.337301][ T6668] ? file_end_write+0x250/0x250 [ 215.342131][ T6668] ? rcu_is_watching+0x11/0xa0 [ 215.346892][ T6668] ? __fget_files+0x40f/0x480 [ 215.351553][ T6668] ? mutex_lock_nested+0x17/0x20 [ 215.356480][ T6668] ? __fdget_pos+0x2bf/0x370 [ 215.361048][ T6668] ? ksys_write+0x71/0x260 [ 215.365541][ T6668] ksys_write+0x152/0x260 [ 215.370026][ T6668] ? __ia32_sys_read+0x80/0x80 [ 215.374859][ T6668] ? rcu_is_watching+0x11/0xa0 [ 215.379612][ T6668] do_syscall_64+0x4c/0xa0 [ 215.384024][ T6668] ? clear_bhb_loop+0x30/0x80 [ 215.388706][ T6668] ? clear_bhb_loop+0x30/0x80 [ 215.393379][ T6668] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 215.399261][ T6668] RIP: 0033:0x7fbad61c174e [ 215.403677][ T6668] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 215.424593][ T6668] RSP: 002b:00007fbad545bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 215.433008][ T6668] RAX: ffffffffffffffda RBX: 00007fbad545c6c0 RCX: 00007fbad61c174e [ 215.441234][ T6668] RDX: 0000000000000001 RSI: 00007fbad545c0b0 RDI: 0000000000000005 [ 215.449309][ T6668] RBP: 00007fbad545c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 215.457437][ T6668] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 215.465405][ T6668] R13: 000000000000006e R14: 00007fbad63a5058 R15: 00007ffe2023ce08 [ 215.473568][ T6668] [ 215.480534][ T6671] CPU: 1 PID: 6671 Comm: syz.4.418 Not tainted syzkaller #0 [ 215.488060][ T6671] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 215.498186][ T6671] Call Trace: [ 215.501557][ T6671] [ 215.504477][ T6671] dump_stack_lvl+0x188/0x250 [ 215.509409][ T6671] ? show_regs_print_info+0x20/0x20 [ 215.514674][ T6671] ? load_image+0x400/0x400 [ 215.519166][ T6671] ? rcu_is_watching+0x11/0xa0 [ 215.523927][ T6671] ? __lock_acquire+0x7d10/0x7d10 [ 215.529118][ T6671] ? lock_release+0xb5/0x8a0 [ 215.533696][ T6671] ? __might_sleep+0xf0/0xf0 [ 215.538272][ T6671] should_fail+0x38c/0x4c0 [ 215.542701][ T6671] _copy_from_user+0x2e/0x170 [ 215.547364][ T6671] kstrtouint_from_user+0xd3/0x220 [ 215.552459][ T6671] ? rcu_is_watching+0x11/0xa0 [ 215.557303][ T6671] ? kstrtol_from_user+0x2a0/0x2a0 [ 215.562396][ T6671] ? lock_acquire+0xc8/0x400 [ 215.566990][ T6671] ? rcu_lock_release+0x20/0x20 [ 215.572065][ T6671] ? read_lock_is_recursive+0x10/0x10 [ 215.577949][ T6671] proc_fail_nth_write+0x8b/0x200 [ 215.583024][ T6671] ? proc_fail_nth_read+0x220/0x220 [ 215.588219][ T6671] ? common_file_perm+0x171/0x1c0 [ 215.593237][ T6671] ? preempt_count_add+0x8d/0x190 [ 215.598301][ T6671] ? proc_fail_nth_read+0x220/0x220 [ 215.603713][ T6671] vfs_write+0x30b/0xd60 [ 215.607957][ T6671] ? file_end_write+0x250/0x250 [ 215.612791][ T6671] ? rcu_is_watching+0x11/0xa0 [ 215.617541][ T6671] ? __fget_files+0x40f/0x480 [ 215.622204][ T6671] ? mutex_lock_nested+0x17/0x20 [ 215.627139][ T6671] ? __fdget_pos+0x2bf/0x370 [ 215.631827][ T6671] ? ksys_write+0x71/0x260 [ 215.636232][ T6671] ksys_write+0x152/0x260 [ 215.640726][ T6671] ? __ia32_sys_read+0x80/0x80 [ 215.645471][ T6671] ? rcu_is_watching+0x11/0xa0 [ 215.650219][ T6671] do_syscall_64+0x4c/0xa0 [ 215.654628][ T6671] ? clear_bhb_loop+0x30/0x80 [ 215.659308][ T6671] ? clear_bhb_loop+0x30/0x80 [ 215.663965][ T6671] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 215.669844][ T6671] RIP: 0033:0x7f16d038274e [ 215.674251][ T6671] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 215.693969][ T6671] RSP: 002b:00007f16cf61cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 215.702491][ T6671] RAX: ffffffffffffffda RBX: 00007f16cf61d6c0 RCX: 00007f16d038274e [ 215.710465][ T6671] RDX: 0000000000000001 RSI: 00007f16cf61d0b0 RDI: 0000000000000004 [ 215.718435][ T6671] RBP: 00007f16cf61d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 215.726404][ T6671] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 215.734411][ T6671] R13: 000000000000006e R14: 00007f16d0566058 R15: 00007ffc849792c8 [ 215.742406][ T6671] [ 215.749610][ T6663] CPU: 0 PID: 6663 Comm: syz.0.417 Not tainted syzkaller #0 [ 215.756935][ T6663] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 215.767092][ T6663] Call Trace: [ 215.770380][ T6663] [ 215.773301][ T6663] dump_stack_lvl+0x188/0x250 [ 215.778054][ T6663] ? show_regs_print_info+0x20/0x20 [ 215.783381][ T6663] ? load_image+0x400/0x400 [ 215.788095][ T6663] ? rcu_is_watching+0x11/0xa0 [ 215.792872][ T6663] ? __lock_acquire+0x7d10/0x7d10 [ 215.797982][ T6663] ? lock_release+0xb5/0x8a0 [ 215.802559][ T6663] ? __might_sleep+0xf0/0xf0 [ 215.807133][ T6663] should_fail+0x38c/0x4c0 [ 215.811547][ T6663] _copy_from_user+0x2e/0x170 [ 215.816209][ T6663] kstrtouint_from_user+0xd3/0x220 [ 215.821418][ T6663] ? rcu_is_watching+0x11/0xa0 [ 215.826187][ T6663] ? kstrtol_from_user+0x2a0/0x2a0 [ 215.831398][ T6663] ? lock_acquire+0xc8/0x400 [ 215.836104][ T6663] ? rcu_lock_release+0x20/0x20 [ 215.841148][ T6663] ? read_lock_is_recursive+0x10/0x10 [ 215.846515][ T6663] proc_fail_nth_write+0x8b/0x200 [ 215.851533][ T6663] ? proc_fail_nth_read+0x220/0x220 [ 215.856727][ T6663] ? common_file_perm+0x171/0x1c0 [ 215.861990][ T6663] ? preempt_count_add+0x8d/0x190 [ 215.867279][ T6663] ? proc_fail_nth_read+0x220/0x220 [ 215.872554][ T6663] vfs_write+0x30b/0xd60 [ 215.876786][ T6663] ? file_end_write+0x250/0x250 [ 215.881617][ T6663] ? rcu_is_watching+0x11/0xa0 [ 215.886464][ T6663] ? __fget_files+0x40f/0x480 [ 215.891125][ T6663] ? mutex_lock_nested+0x17/0x20 [ 215.896255][ T6663] ? __fdget_pos+0x2bf/0x370 [ 215.900872][ T6663] ? ksys_write+0x71/0x260 [ 215.905318][ T6663] ksys_write+0x152/0x260 [ 215.909639][ T6663] ? __ia32_sys_read+0x80/0x80 [ 215.914493][ T6663] ? rcu_is_watching+0x11/0xa0 [ 215.919528][ T6663] do_syscall_64+0x4c/0xa0 [ 215.923936][ T6663] ? clear_bhb_loop+0x30/0x80 [ 215.928686][ T6663] ? clear_bhb_loop+0x30/0x80 [ 215.933345][ T6663] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 215.939222][ T6663] RIP: 0033:0x7f864b3a574e [ 215.943630][ T6663] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 215.963403][ T6663] RSP: 002b:00007f864a660ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 215.971824][ T6663] RAX: ffffffffffffffda RBX: 00007f864a6616c0 RCX: 00007f864b3a574e [ 215.979877][ T6663] RDX: 0000000000000001 RSI: 00007f864a6610b0 RDI: 0000000000000007 [ 215.988025][ T6663] RBP: 00007f864a6610a0 R08: 0000000000000000 R09: 0000000000000000 [ 215.996113][ T6663] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 216.004070][ T6663] R13: 000000000000000b R14: 00007f864b588f80 R15: 00007ffeb91066c8 [ 216.012303][ T6663] [ 216.043983][ T6676] FAULT_INJECTION: forcing a failure. [ 216.043983][ T6676] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 216.063974][ T6679] FAULT_INJECTION: forcing a failure. [ 216.063974][ T6679] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 216.077384][ T6679] CPU: 0 PID: 6679 Comm: syz.3.422 Not tainted syzkaller #0 [ 216.084999][ T6679] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 216.095163][ T6679] Call Trace: [ 216.098450][ T6679] [ 216.101368][ T6679] dump_stack_lvl+0x188/0x250 [ 216.106041][ T6679] ? show_regs_print_info+0x20/0x20 [ 216.111310][ T6679] ? load_image+0x400/0x400 [ 216.115795][ T6679] ? exc_page_fault+0x88/0x100 [ 216.120558][ T6679] ? rcu_is_watching+0x11/0xa0 [ 216.125313][ T6679] should_fail+0x38c/0x4c0 [ 216.129800][ T6679] strncpy_from_user+0x32/0x360 [ 216.134721][ T6679] ? read_lock_is_recursive+0x10/0x10 [ 216.140094][ T6679] strncpy_from_user_nofault+0x6d/0x140 [ 216.145893][ T6679] bpf_probe_read_user_str+0x26/0x70 [ 216.151479][ T6679] bpf_prog_693483806bd7978c+0x5b/0x808 [ 216.157059][ T6679] bpf_trace_run2+0x163/0x2e0 [ 216.161817][ T6679] ? do_raw_spin_lock+0x128/0x2f0 [ 216.166949][ T6679] ? bpf_trace_run1+0x2e0/0x2e0 [ 216.172188][ T6679] ? psi_group_change+0xb40/0x1150 [ 216.177396][ T6679] ? perf_trace_tlb_flush+0x330/0x330 [ 216.182801][ T6679] __traceiter_tlb_flush+0x69/0xb0 [ 216.188021][ T6679] trace_tlb_flush+0xe6/0x110 [ 216.192850][ T6679] switch_mm_irqs_off+0x6f3/0x9b0 [ 216.198045][ T6679] ? switch_mm+0x140/0x140 [ 216.203045][ T6679] __schedule+0x1079/0x43c0 [ 216.207603][ T6679] ? release_firmware_map_entry+0x190/0x190 [ 216.213507][ T6679] ? lock_chain_count+0x20/0x20 [ 216.218390][ T6679] ? __irq_exit_rcu+0x147/0x230 [ 216.223344][ T6679] schedule+0x11b/0x1e0 [ 216.227694][ T6679] exit_to_user_mode_loop+0x47/0x130 [ 216.232992][ T6679] exit_to_user_mode_prepare+0xee/0x180 [ 216.238644][ T6679] irqentry_exit_to_user_mode+0x5/0x30 [ 216.244165][ T6679] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 216.250150][ T6679] RIP: 0033:0x7fbad61c174e [ 216.254751][ T6679] Code: Unable to access opcode bytes at RIP 0x7fbad61c1724. [ 216.262227][ T6679] RSP: 002b:00007fbad547cff8 EFLAGS: 00000246 [ 216.268676][ T6679] RAX: 0000000000000001 RBX: 00007fbad547d6c0 RCX: 00007fbad61c174e [ 216.276697][ T6679] RDX: 0000000000000001 RSI: 00007fbad547d0a0 RDI: 0000000000000007 [ 216.284690][ T6679] RBP: 00007fbad547d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 216.292715][ T6679] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 216.300696][ T6679] R13: 000000000000000b R14: 00007fbad63a4f80 R15: 00007ffe2023ce08 [ 216.308766][ T6679] [ 216.317154][ T6675] FAULT_INJECTION: forcing a failure. [ 216.317154][ T6675] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 216.318517][ T6684] FAULT_INJECTION: forcing a failure. [ 216.318517][ T6684] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 216.331893][ T6676] CPU: 0 PID: 6676 Comm: syz.4.421 Not tainted syzkaller #0 [ 216.351844][ T6676] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 216.362129][ T6676] Call Trace: [ 216.365417][ T6676] [ 216.368645][ T6676] dump_stack_lvl+0x188/0x250 [ 216.373329][ T6676] ? show_regs_print_info+0x20/0x20 [ 216.378786][ T6676] ? load_image+0x400/0x400 [ 216.383293][ T6676] ? rcu_is_watching+0x11/0xa0 [ 216.388056][ T6676] ? __lock_acquire+0x7d10/0x7d10 [ 216.393078][ T6676] ? lock_release+0xb5/0x8a0 [ 216.397671][ T6676] ? __might_sleep+0xf0/0xf0 [ 216.402263][ T6676] should_fail+0x38c/0x4c0 [ 216.406802][ T6676] _copy_from_user+0x2e/0x170 [ 216.411472][ T6676] kstrtouint_from_user+0xd3/0x220 [ 216.416575][ T6676] ? rcu_is_watching+0x11/0xa0 [ 216.421326][ T6676] ? kstrtol_from_user+0x2a0/0x2a0 [ 216.426420][ T6676] ? lock_acquire+0xc8/0x400 [ 216.431088][ T6676] ? rcu_lock_release+0x20/0x20 [ 216.435936][ T6676] ? read_lock_is_recursive+0x10/0x10 [ 216.441443][ T6676] proc_fail_nth_write+0x8b/0x200 [ 216.446482][ T6676] ? proc_fail_nth_read+0x220/0x220 [ 216.451685][ T6676] ? common_file_perm+0x171/0x1c0 [ 216.456797][ T6676] ? preempt_count_add+0x8d/0x190 [ 216.461944][ T6676] ? proc_fail_nth_read+0x220/0x220 [ 216.467366][ T6676] vfs_write+0x30b/0xd60 [ 216.471724][ T6676] ? file_end_write+0x250/0x250 [ 216.476558][ T6676] ? rcu_is_watching+0x11/0xa0 [ 216.481307][ T6676] ? __fget_files+0x40f/0x480 [ 216.485967][ T6676] ? mutex_lock_nested+0x17/0x20 [ 216.491213][ T6676] ? __fdget_pos+0x2bf/0x370 [ 216.495895][ T6676] ? ksys_write+0x71/0x260 [ 216.500317][ T6676] ksys_write+0x152/0x260 [ 216.504835][ T6676] ? __ia32_sys_read+0x80/0x80 [ 216.509587][ T6676] ? rcu_is_watching+0x11/0xa0 [ 216.514531][ T6676] do_syscall_64+0x4c/0xa0 [ 216.519221][ T6676] ? clear_bhb_loop+0x30/0x80 [ 216.523900][ T6676] ? clear_bhb_loop+0x30/0x80 [ 216.528560][ T6676] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 216.534555][ T6676] RIP: 0033:0x7f16d038274e [ 216.538987][ T6676] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 216.559025][ T6676] RSP: 002b:00007f16cf63dff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 216.567549][ T6676] RAX: ffffffffffffffda RBX: 00007f16cf63e6c0 RCX: 00007f16d038274e [ 216.575804][ T6676] RDX: 0000000000000001 RSI: 00007f16cf63e0b0 RDI: 0000000000000007 [ 216.584073][ T6676] RBP: 00007f16cf63e0a0 R08: 0000000000000000 R09: 0000000000000000 [ 216.592183][ T6676] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 216.600317][ T6676] R13: 000000000000000b R14: 00007f16d0565f80 R15: 00007ffc849792c8 [ 216.608761][ T6676] [ 216.612454][ T6675] CPU: 1 PID: 6675 Comm: syz.2.420 Not tainted syzkaller #0 [ 216.619846][ T6675] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 216.629997][ T6675] Call Trace: [ 216.633414][ T6675] [ 216.636329][ T6675] dump_stack_lvl+0x188/0x250 [ 216.641083][ T6675] ? show_regs_print_info+0x20/0x20 [ 216.646269][ T6675] ? load_image+0x400/0x400 [ 216.650764][ T6675] ? rcu_is_watching+0x11/0xa0 [ 216.655600][ T6675] ? __lock_acquire+0x7d10/0x7d10 [ 216.660726][ T6675] ? lock_release+0xb5/0x8a0 [ 216.665310][ T6675] ? __might_sleep+0xf0/0xf0 [ 216.669904][ T6675] should_fail+0x38c/0x4c0 [ 216.674405][ T6675] _copy_from_user+0x2e/0x170 [ 216.679067][ T6675] kstrtouint_from_user+0xd3/0x220 [ 216.684162][ T6675] ? rcu_is_watching+0x11/0xa0 [ 216.689265][ T6675] ? kstrtol_from_user+0x2a0/0x2a0 [ 216.694382][ T6675] ? lock_acquire+0xc8/0x400 [ 216.698959][ T6675] ? rcu_lock_release+0x20/0x20 [ 216.703796][ T6675] ? read_lock_is_recursive+0x10/0x10 [ 216.709153][ T6675] proc_fail_nth_write+0x8b/0x200 [ 216.714177][ T6675] ? proc_fail_nth_read+0x220/0x220 [ 216.719369][ T6675] ? common_file_perm+0x171/0x1c0 [ 216.724387][ T6675] ? preempt_count_add+0x8d/0x190 [ 216.729409][ T6675] ? proc_fail_nth_read+0x220/0x220 [ 216.734724][ T6675] vfs_write+0x30b/0xd60 [ 216.738962][ T6675] ? file_end_write+0x250/0x250 [ 216.744111][ T6675] ? rcu_is_watching+0x11/0xa0 [ 216.748992][ T6675] ? __fget_files+0x40f/0x480 [ 216.753675][ T6675] ? mutex_lock_nested+0x17/0x20 [ 216.758618][ T6675] ? __fdget_pos+0x2bf/0x370 [ 216.763290][ T6675] ? ksys_write+0x71/0x260 [ 216.767701][ T6675] ksys_write+0x152/0x260 [ 216.772013][ T6675] ? __ia32_sys_read+0x80/0x80 [ 216.777081][ T6675] ? rcu_is_watching+0x11/0xa0 [ 216.782006][ T6675] do_syscall_64+0x4c/0xa0 [ 216.786495][ T6675] ? clear_bhb_loop+0x30/0x80 [ 216.791157][ T6675] ? clear_bhb_loop+0x30/0x80 [ 216.795820][ T6675] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 216.801794][ T6675] RIP: 0033:0x7fbdb3b2c74e [ 216.806301][ T6675] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 216.826172][ T6675] RSP: 002b:00007fbdb2de7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 216.834667][ T6675] RAX: ffffffffffffffda RBX: 00007fbdb2de86c0 RCX: 00007fbdb3b2c74e [ 216.842641][ T6675] RDX: 0000000000000001 RSI: 00007fbdb2de80b0 RDI: 0000000000000006 [ 216.850632][ T6675] RBP: 00007fbdb2de80a0 R08: 0000000000000000 R09: 0000000000000000 [ 216.858657][ T6675] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 216.866646][ T6675] R13: 000000000000000b R14: 00007fbdb3d0ff80 R15: 00007ffc8d3c7768 [ 216.874718][ T6675] [ 216.879237][ T6684] CPU: 0 PID: 6684 Comm: syz.0.424 Not tainted syzkaller #0 [ 216.886679][ T6684] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 216.896762][ T6684] Call Trace: [ 216.900049][ T6684] [ 216.902989][ T6684] dump_stack_lvl+0x188/0x250 [ 216.907713][ T6684] ? show_regs_print_info+0x20/0x20 [ 216.913285][ T6684] ? load_image+0x400/0x400 [ 216.918299][ T6684] ? rcu_is_watching+0x11/0xa0 [ 216.923366][ T6684] ? __lock_acquire+0x7d10/0x7d10 [ 216.928664][ T6684] ? lock_release+0xb5/0x8a0 [ 216.933501][ T6684] ? __might_sleep+0xf0/0xf0 [ 216.938182][ T6684] should_fail+0x38c/0x4c0 [ 216.943038][ T6684] _copy_from_user+0x2e/0x170 [ 216.947902][ T6684] kstrtouint_from_user+0xd3/0x220 [ 216.953173][ T6684] ? rcu_is_watching+0x11/0xa0 [ 216.957932][ T6684] ? kstrtol_from_user+0x2a0/0x2a0 [ 216.963227][ T6684] ? lock_acquire+0xc8/0x400 [ 216.968097][ T6684] ? rcu_lock_release+0x20/0x20 [ 216.973162][ T6684] ? read_lock_is_recursive+0x10/0x10 [ 216.978625][ T6684] proc_fail_nth_write+0x8b/0x200 [ 216.983815][ T6684] ? proc_fail_nth_read+0x220/0x220 [ 216.989029][ T6684] ? common_file_perm+0x171/0x1c0 [ 216.994191][ T6684] ? preempt_count_add+0x8d/0x190 [ 216.999230][ T6684] ? proc_fail_nth_read+0x220/0x220 [ 217.004530][ T6684] vfs_write+0x30b/0xd60 [ 217.008766][ T6684] ? file_end_write+0x250/0x250 [ 217.013602][ T6684] ? rcu_is_watching+0x11/0xa0 [ 217.018358][ T6684] ? __fget_files+0x40f/0x480 [ 217.023229][ T6684] ? mutex_lock_nested+0x17/0x20 [ 217.028153][ T6684] ? __fdget_pos+0x2bf/0x370 [ 217.032982][ T6684] ? ksys_write+0x71/0x260 [ 217.037500][ T6684] ksys_write+0x152/0x260 [ 217.041924][ T6684] ? __ia32_sys_read+0x80/0x80 [ 217.046710][ T6684] ? rcu_is_watching+0x11/0xa0 [ 217.051674][ T6684] do_syscall_64+0x4c/0xa0 [ 217.056111][ T6684] ? clear_bhb_loop+0x30/0x80 [ 217.061034][ T6684] ? clear_bhb_loop+0x30/0x80 [ 217.065729][ T6684] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 217.071619][ T6684] RIP: 0033:0x7f864b3a574e [ 217.076366][ T6684] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 217.096503][ T6684] RSP: 002b:00007f864a63fff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 217.105100][ T6684] RAX: ffffffffffffffda RBX: 00007f864a6406c0 RCX: 00007f864b3a574e [ 217.113262][ T6684] RDX: 0000000000000001 RSI: 00007f864a6400b0 RDI: 0000000000000005 [ 217.121324][ T6684] RBP: 00007f864a6400a0 R08: 0000000000000000 R09: 0000000000000000 [ 217.129365][ T6684] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 217.137515][ T6684] R13: 000000000000006e R14: 00007f864b589058 R15: 00007ffeb91066c8 [ 217.145935][ T6684] [ 217.186045][ T6682] FAULT_INJECTION: forcing a failure. [ 217.186045][ T6682] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 217.200611][ T6687] FAULT_INJECTION: forcing a failure. [ 217.200611][ T6687] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 217.218246][ T6690] FAULT_INJECTION: forcing a failure. [ 217.218246][ T6690] name fail_usercopy, interval 1, probability 0, space 0, times 0 2026/04/25 10:13:55 executed programs: 420 [ 217.222201][ T6687] CPU: 0 PID: 6687 Comm: syz.2.425 Not tainted syzkaller #0 [ 217.238791][ T6687] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 217.248859][ T6687] Call Trace: [ 217.252139][ T6687] [ 217.255056][ T6687] dump_stack_lvl+0x188/0x250 [ 217.260016][ T6687] ? show_regs_print_info+0x20/0x20 [ 217.265238][ T6687] ? load_image+0x400/0x400 [ 217.269757][ T6687] ? rcu_is_watching+0x11/0xa0 [ 217.274525][ T6687] ? __lock_acquire+0x7d10/0x7d10 [ 217.279642][ T6687] ? lock_release+0xb5/0x8a0 [ 217.284477][ T6687] ? __might_sleep+0xf0/0xf0 [ 217.289050][ T6687] should_fail+0x38c/0x4c0 [ 217.293458][ T6687] _copy_from_user+0x2e/0x170 [ 217.298150][ T6687] kstrtouint_from_user+0xd3/0x220 [ 217.303243][ T6687] ? rcu_is_watching+0x11/0xa0 [ 217.307991][ T6687] ? kstrtol_from_user+0x2a0/0x2a0 [ 217.313089][ T6687] ? lock_acquire+0xc8/0x400 [ 217.317666][ T6687] ? rcu_lock_release+0x20/0x20 [ 217.322559][ T6687] ? read_lock_is_recursive+0x10/0x10 [ 217.327921][ T6687] proc_fail_nth_write+0x8b/0x200 [ 217.332937][ T6687] ? proc_fail_nth_read+0x220/0x220 [ 217.338383][ T6687] ? common_file_perm+0x171/0x1c0 [ 217.343404][ T6687] ? preempt_count_add+0x8d/0x190 [ 217.348465][ T6687] ? proc_fail_nth_read+0x220/0x220 [ 217.353717][ T6687] vfs_write+0x30b/0xd60 [ 217.357958][ T6687] ? file_end_write+0x250/0x250 [ 217.362800][ T6687] ? rcu_is_watching+0x11/0xa0 [ 217.367550][ T6687] ? __fget_files+0x40f/0x480 [ 217.372306][ T6687] ? mutex_lock_nested+0x17/0x20 [ 217.377253][ T6687] ? __fdget_pos+0x2bf/0x370 [ 217.381957][ T6687] ? ksys_write+0x71/0x260 [ 217.386628][ T6687] ksys_write+0x152/0x260 [ 217.390978][ T6687] ? __ia32_sys_read+0x80/0x80 [ 217.395826][ T6687] ? rcu_is_watching+0x11/0xa0 [ 217.400593][ T6687] do_syscall_64+0x4c/0xa0 [ 217.405104][ T6687] ? clear_bhb_loop+0x30/0x80 [ 217.409876][ T6687] ? clear_bhb_loop+0x30/0x80 [ 217.414556][ T6687] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 217.420459][ T6687] RIP: 0033:0x7fbdb3b2c74e [ 217.424902][ T6687] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 217.444616][ T6687] RSP: 002b:00007fbdb2de7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 217.453343][ T6687] RAX: ffffffffffffffda RBX: 00007fbdb2de86c0 RCX: 00007fbdb3b2c74e [ 217.461322][ T6687] RDX: 0000000000000001 RSI: 00007fbdb2de80b0 RDI: 0000000000000007 [ 217.469378][ T6687] RBP: 00007fbdb2de80a0 R08: 0000000000000000 R09: 0000000000000000 [ 217.477660][ T6687] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 217.485818][ T6687] R13: 000000000000000b R14: 00007fbdb3d0ff80 R15: 00007ffc8d3c7768 [ 217.493901][ T6687] [ 217.499118][ T6692] FAULT_INJECTION: forcing a failure. [ 217.499118][ T6692] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 217.505680][ T6682] CPU: 0 PID: 6682 Comm: syz.1.423 Not tainted syzkaller #0 [ 217.519526][ T6682] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 217.529582][ T6682] Call Trace: [ 217.532861][ T6682] [ 217.535875][ T6682] dump_stack_lvl+0x188/0x250 [ 217.540569][ T6682] ? show_regs_print_info+0x20/0x20 [ 217.545862][ T6682] ? load_image+0x400/0x400 [ 217.550594][ T6682] ? rcu_is_watching+0x11/0xa0 [ 217.555365][ T6682] ? __lock_acquire+0x7d10/0x7d10 [ 217.560833][ T6682] ? lock_release+0xb5/0x8a0 [ 217.565428][ T6682] ? __might_sleep+0xf0/0xf0 [ 217.570016][ T6682] should_fail+0x38c/0x4c0 [ 217.574434][ T6682] _copy_from_user+0x2e/0x170 [ 217.579112][ T6682] kstrtouint_from_user+0xd3/0x220 [ 217.584221][ T6682] ? rcu_is_watching+0x11/0xa0 [ 217.589064][ T6682] ? kstrtol_from_user+0x2a0/0x2a0 [ 217.594195][ T6682] ? lock_acquire+0xc8/0x400 [ 217.598780][ T6682] ? rcu_lock_release+0x20/0x20 [ 217.603797][ T6682] ? read_lock_is_recursive+0x10/0x10 [ 217.609179][ T6682] proc_fail_nth_write+0x8b/0x200 [ 217.614202][ T6682] ? proc_fail_nth_read+0x220/0x220 [ 217.619392][ T6682] ? common_file_perm+0x171/0x1c0 [ 217.624408][ T6682] ? preempt_count_add+0x8d/0x190 [ 217.629510][ T6682] ? proc_fail_nth_read+0x220/0x220 [ 217.634702][ T6682] vfs_write+0x30b/0xd60 [ 217.638964][ T6682] ? file_end_write+0x250/0x250 [ 217.643976][ T6682] ? rcu_is_watching+0x11/0xa0 [ 217.648751][ T6682] ? __fget_files+0x40f/0x480 [ 217.653529][ T6682] ? mutex_lock_nested+0x17/0x20 [ 217.658564][ T6682] ? __fdget_pos+0x2bf/0x370 [ 217.663238][ T6682] ? ksys_write+0x71/0x260 [ 217.667658][ T6682] ksys_write+0x152/0x260 [ 217.671996][ T6682] ? __ia32_sys_read+0x80/0x80 [ 217.676870][ T6682] ? rcu_is_watching+0x11/0xa0 [ 217.682142][ T6682] do_syscall_64+0x4c/0xa0 [ 217.686599][ T6682] ? clear_bhb_loop+0x30/0x80 [ 217.691383][ T6682] ? clear_bhb_loop+0x30/0x80 [ 217.696089][ T6682] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 217.702088][ T6682] RIP: 0033:0x7f3baf05d74e [ 217.706501][ T6682] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 217.726259][ T6682] RSP: 002b:00007f3bae318ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 217.734938][ T6682] RAX: ffffffffffffffda RBX: 00007f3bae3196c0 RCX: 00007f3baf05d74e [ 217.742942][ T6682] RDX: 0000000000000001 RSI: 00007f3bae3190b0 RDI: 0000000000000008 [ 217.751025][ T6682] RBP: 00007f3bae3190a0 R08: 0000000000000000 R09: 0000000000000000 [ 217.759080][ T6682] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 217.767172][ T6682] R13: 000000000000000b R14: 00007f3baf240f80 R15: 00007ffeabae9a08 [ 217.775181][ T6682] [ 217.778220][ T6692] CPU: 1 PID: 6692 Comm: syz.0.427 Not tainted syzkaller #0 [ 217.785659][ T6692] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 217.795728][ T6692] Call Trace: [ 217.799092][ T6692] [ 217.802026][ T6692] dump_stack_lvl+0x188/0x250 [ 217.806721][ T6692] ? show_regs_print_info+0x20/0x20 [ 217.811936][ T6692] ? load_image+0x400/0x400 [ 217.816456][ T6692] ? rcu_is_watching+0x11/0xa0 [ 217.821323][ T6692] ? __lock_acquire+0x7d10/0x7d10 [ 217.826343][ T6692] ? lock_release+0xb5/0x8a0 [ 217.830487][ T6694] FAULT_INJECTION: forcing a failure. [ 217.830487][ T6694] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 217.830935][ T6692] ? __might_sleep+0xf0/0xf0 [ 217.848560][ T6692] should_fail+0x38c/0x4c0 [ 217.853006][ T6692] _copy_from_user+0x2e/0x170 [ 217.857702][ T6692] kstrtouint_from_user+0xd3/0x220 [ 217.862914][ T6692] ? rcu_is_watching+0x11/0xa0 [ 217.867864][ T6692] ? kstrtol_from_user+0x2a0/0x2a0 [ 217.872984][ T6692] ? lock_acquire+0xc8/0x400 [ 217.877729][ T6692] ? rcu_lock_release+0x20/0x20 [ 217.882593][ T6692] ? read_lock_is_recursive+0x10/0x10 [ 217.887990][ T6692] proc_fail_nth_write+0x8b/0x200 [ 217.893022][ T6692] ? proc_fail_nth_read+0x220/0x220 [ 217.898236][ T6692] ? common_file_perm+0x171/0x1c0 [ 217.903276][ T6692] ? preempt_count_add+0x8d/0x190 [ 217.908395][ T6692] ? proc_fail_nth_read+0x220/0x220 [ 217.913685][ T6692] vfs_write+0x30b/0xd60 [ 217.917929][ T6692] ? file_end_write+0x250/0x250 [ 217.922776][ T6692] ? rcu_is_watching+0x11/0xa0 [ 217.927550][ T6692] ? __fget_files+0x40f/0x480 [ 217.932234][ T6692] ? mutex_lock_nested+0x17/0x20 [ 217.937189][ T6692] ? __fdget_pos+0x2bf/0x370 [ 217.941781][ T6692] ? ksys_write+0x71/0x260 [ 217.946202][ T6692] ksys_write+0x152/0x260 [ 217.950546][ T6692] ? __ia32_sys_read+0x80/0x80 [ 217.955303][ T6692] ? rcu_is_watching+0x11/0xa0 [ 217.960059][ T6692] do_syscall_64+0x4c/0xa0 [ 217.964469][ T6692] ? clear_bhb_loop+0x30/0x80 [ 217.969141][ T6692] ? clear_bhb_loop+0x30/0x80 [ 217.973814][ T6692] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 217.979709][ T6692] RIP: 0033:0x7f864b3a574e [ 217.984306][ T6692] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 218.004005][ T6692] RSP: 002b:00007f864a660ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 218.012429][ T6692] RAX: ffffffffffffffda RBX: 00007f864a6616c0 RCX: 00007f864b3a574e [ 218.020414][ T6692] RDX: 0000000000000001 RSI: 00007f864a6610b0 RDI: 0000000000000007 [ 218.028408][ T6692] RBP: 00007f864a6610a0 R08: 0000000000000000 R09: 0000000000000000 [ 218.036399][ T6692] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 218.044378][ T6692] R13: 000000000000000b R14: 00007f864b588f80 R15: 00007ffeb91066c8 [ 218.052536][ T6692] [ 218.055548][ T6694] CPU: 0 PID: 6694 Comm: syz.4.426 Not tainted syzkaller #0 [ 218.062842][ T6694] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 218.073045][ T6694] Call Trace: [ 218.076341][ T6694] [ 218.079301][ T6694] dump_stack_lvl+0x188/0x250 [ 218.083992][ T6694] ? show_regs_print_info+0x20/0x20 [ 218.089211][ T6694] ? load_image+0x400/0x400 [ 218.093794][ T6694] ? rcu_is_watching+0x11/0xa0 [ 218.098613][ T6694] ? __lock_acquire+0x7d10/0x7d10 [ 218.103864][ T6694] ? lock_release+0xb5/0x8a0 [ 218.108474][ T6694] ? __might_sleep+0xf0/0xf0 [ 218.113089][ T6694] should_fail+0x38c/0x4c0 [ 218.117498][ T6694] _copy_from_user+0x2e/0x170 [ 218.122274][ T6694] kstrtouint_from_user+0xd3/0x220 [ 218.127568][ T6694] ? rcu_is_watching+0x11/0xa0 [ 218.132669][ T6694] ? kstrtol_from_user+0x2a0/0x2a0 [ 218.137882][ T6694] ? lock_acquire+0xc8/0x400 [ 218.142462][ T6694] ? rcu_lock_release+0x20/0x20 [ 218.147300][ T6694] ? read_lock_is_recursive+0x10/0x10 [ 218.152659][ T6694] proc_fail_nth_write+0x8b/0x200 [ 218.157678][ T6694] ? proc_fail_nth_read+0x220/0x220 [ 218.162958][ T6694] ? common_file_perm+0x171/0x1c0 [ 218.167990][ T6694] ? preempt_count_add+0x8d/0x190 [ 218.173124][ T6694] ? proc_fail_nth_read+0x220/0x220 [ 218.178413][ T6694] vfs_write+0x30b/0xd60 [ 218.182669][ T6694] ? file_end_write+0x250/0x250 [ 218.187628][ T6694] ? rcu_is_watching+0x11/0xa0 [ 218.192391][ T6694] ? __fget_files+0x40f/0x480 [ 218.197065][ T6694] ? mutex_lock_nested+0x17/0x20 [ 218.201998][ T6694] ? __fdget_pos+0x2bf/0x370 [ 218.206599][ T6694] ? ksys_write+0x71/0x260 [ 218.211005][ T6694] ksys_write+0x152/0x260 [ 218.215328][ T6694] ? __ia32_sys_read+0x80/0x80 [ 218.220101][ T6694] ? rcu_is_watching+0x11/0xa0 [ 218.224852][ T6694] do_syscall_64+0x4c/0xa0 [ 218.229267][ T6694] ? clear_bhb_loop+0x30/0x80 [ 218.234015][ T6694] ? clear_bhb_loop+0x30/0x80 [ 218.238677][ T6694] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 218.244588][ T6694] RIP: 0033:0x7f16d038274e [ 218.248994][ T6694] Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 [ 218.268585][ T6694] RSP: 002b:00007f16cf61cff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 218.276996][ T6694] RAX: ffffffffffffffda RBX: 00007f16cf61d6c0 RCX: 00007f16d038274e [ 218.285043][ T6694] RDX: 0000000000000001 RSI: 00007f16cf61d0b0 RDI: 0000000000000005 [ 218.292997][ T6694] RBP: 00007f16cf61d0a0 R08: 0000000000000000 R09: 0000000000000000 [ 218.300952][ T6694] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 218.308993][ T6694] R13: 000000000000006e R14: 00007f16d0566058 R15: 00007ffc849792c8 [ 218.316957][ T6694] [ 218.323573][ T6699] FAULT_INJECTION: forcing a failure. [ 218.323573][ T6699] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 218.341071][ T6690] CPU: 0 PID: 6690 Comm: syz.3.428 Not tainted syzkaller #0 [ 218.348400][ T6690] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 218.358625][ T6690] Call Trace: [ 218.361929][ T6690] [ 218.364857][ T6690] dump_stack_lvl+0x188/0x250 [ 218.369540][ T6690] ? show_regs_print_info+0x20/0x20 [ 218.374731][ T6690] ? load_image+0x400/0x400 [ 218.379229][ T6690] ? rcu_is_watching+0x11/0xa0 [ 218.384000][ T6690] ? __lock_acquire+0x7d10/0x7d10 [ 218.389046][ T6690] ? lock_release+0xb5/0x8a0 [ 218.393643][ T6690] ? __might_sleep+0xf0/0xf0 [ 218.398234][ T6690] should_fail+0x38c/0x4c0 [ 218.402653][ T6690] _copy_from_user+0x2e/0x170 [ 218.407320][ T6690] kstrtouint_from_user+0xd3/0x220 [ 218.412423][ T6690] ? rcu_is_watching+0x11/0xa0 [ 218.417181][ T6690] ? kstrtol_from_user+0x2a0/0x2a0 [ 218.422281][ T6690] ? lock_acquire+0xc8/0x400 [ 218.426866][ T6690] ? rcu_lock_release+0x20/0x20 [ 218.431709][ T6690] ? read_lock_is_recursive+0x10/0x10