b 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 [ 137.386603][ T5754] RSP: 002b:00007f0a24f7aff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 137.395014][ T5754] RAX: ffffffffffffffda RBX: 00007f0a24f7b6c0 RCX: 00007f0a25ce074e [ 137.403193][ T5754] RDX: 0000000000000001 RSI: 00007f0a24f7b0b0 RDI: 0000000000000005 [ 137.411211][ T5754] RBP: 00007f0a24f7b0a0 R08: 0000000000000000 R09: 0000000000000000 [ 137.419175][ T5754] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 137.427162][ T5754] R13: 000000000000006e R14: 00007f0a25ec4058 R15: 00007fff8b3f2f08 [ 137.435155][ T5754] [ 137.448147][ T5756] FAULT_INJECTION: forcing a failure. [ 137.448147][ T5756] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 137.463133][ T5739] FAULT_INJECTION: forcing a failure. [ 137.463133][ T5739] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 137.475739][ T5756] CPU: 0 PID: 5756 Comm: syz.2.202 Not tainted syzkaller #0 [ 137.483560][ T5756] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 137.493712][ T5756] Call Trace: [ 137.496993][ T5756] [ 137.499920][ T5756] dump_stack_lvl+0x188/0x250 [ 137.504631][ T5756] ? show_regs_print_info+0x20/0x20 [ 137.509825][ T5756] ? load_image+0x410/0x410 [ 137.514420][ T5756] ? __lock_acquire+0x7b50/0x7b50 [ 137.519473][ T5756] should_fail+0x383/0x4b0 [ 137.523898][ T5756] _copy_from_user+0x2e/0x170 [ 137.528660][ T5756] kstrtouint_from_user+0xd3/0x220 [ 137.533862][ T5756] ? kstrtol_from_user+0x2a0/0x2a0 [ 137.538975][ T5756] proc_fail_nth_write+0x8b/0x200 [ 137.543991][ T5756] ? proc_fail_nth_read+0x220/0x220 [ 137.549448][ T5756] ? common_file_perm+0x171/0x1c0 [ 137.554500][ T5756] ? proc_fail_nth_read+0x220/0x220 [ 137.559708][ T5756] vfs_write+0x304/0xd70 [ 137.563981][ T5756] ? file_end_write+0x250/0x250 [ 137.568848][ T5756] ? mutex_lock_nested+0x17/0x20 [ 137.573795][ T5756] ? __fdget_pos+0x2bf/0x370 [ 137.578388][ T5756] ? ksys_write+0x70/0x260 [ 137.582817][ T5756] ksys_write+0x153/0x260 [ 137.587158][ T5756] ? __ia32_sys_read+0x80/0x80 [ 137.592016][ T5756] ? lockdep_hardirqs_on+0x94/0x140 [ 137.597215][ T5756] do_syscall_64+0x4c/0xa0 [ 137.601631][ T5756] ? clear_bhb_loop+0x30/0x80 [ 137.606300][ T5756] ? clear_bhb_loop+0x30/0x80 [ 137.611089][ T5756] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 137.616986][ T5756] RIP: 0033:0x7f43fb03c74e [ 137.621668][ T5756] 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 [ 137.641445][ T5756] RSP: 002b:00007f43fa2f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 137.649862][ T5756] RAX: ffffffffffffffda RBX: 00007f43fa2f86c0 RCX: 00007f43fb03c74e [ 137.657823][ T5756] RDX: 0000000000000001 RSI: 00007f43fa2f80b0 RDI: 0000000000000007 [ 137.665792][ T5756] RBP: 00007f43fa2f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 137.673752][ T5756] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 137.681723][ T5756] R13: 000000000000000b R14: 00007f43fb21ff80 R15: 00007fffb4f5ab98 [ 137.689705][ T5756] [ 137.753582][ T5761] FAULT_INJECTION: forcing a failure. [ 137.753582][ T5761] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 137.753582][ T5764] FAULT_INJECTION: forcing a failure. [ 137.753582][ T5764] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 137.753617][ T5764] CPU: 0 PID: 5764 Comm: syz.4.204 Not tainted syzkaller #0 [ 137.786993][ T5764] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 137.797037][ T5764] Call Trace: [ 137.800307][ T5764] [ 137.803232][ T5764] dump_stack_lvl+0x188/0x250 [ 137.807911][ T5764] ? show_regs_print_info+0x20/0x20 [ 137.813198][ T5764] ? load_image+0x410/0x410 [ 137.817702][ T5764] ? __lock_acquire+0x7b50/0x7b50 [ 137.822731][ T5764] should_fail+0x383/0x4b0 [ 137.827151][ T5764] _copy_from_user+0x2e/0x170 [ 137.831827][ T5764] kstrtouint_from_user+0xd3/0x220 [ 137.836941][ T5764] ? kstrtol_from_user+0x2a0/0x2a0 [ 137.842057][ T5764] proc_fail_nth_write+0x8b/0x200 [ 137.847073][ T5764] ? proc_fail_nth_read+0x220/0x220 [ 137.852272][ T5764] ? common_file_perm+0x171/0x1c0 [ 137.857377][ T5764] ? proc_fail_nth_read+0x220/0x220 [ 137.862655][ T5764] vfs_write+0x304/0xd70 [ 137.867052][ T5764] ? file_end_write+0x250/0x250 [ 137.871924][ T5764] ? mutex_lock_nested+0x17/0x20 [ 137.876866][ T5764] ? __fdget_pos+0x2bf/0x370 [ 137.881457][ T5764] ? ksys_write+0x70/0x260 [ 137.885879][ T5764] ksys_write+0x153/0x260 [ 137.890208][ T5764] ? __ia32_sys_read+0x80/0x80 [ 137.894982][ T5764] ? lockdep_hardirqs_on+0x94/0x140 [ 137.900182][ T5764] do_syscall_64+0x4c/0xa0 [ 137.904600][ T5764] ? clear_bhb_loop+0x30/0x80 [ 137.909267][ T5764] ? clear_bhb_loop+0x30/0x80 [ 137.913935][ T5764] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 137.919828][ T5764] RIP: 0033:0x7f8c3f13c74e [ 137.924253][ T5764] 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 [ 137.943965][ T5764] RSP: 002b:00007f8c3e3f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 137.952380][ T5764] RAX: ffffffffffffffda RBX: 00007f8c3e3f86c0 RCX: 00007f8c3f13c74e [ 137.960342][ T5764] RDX: 0000000000000001 RSI: 00007f8c3e3f80b0 RDI: 0000000000000007 [ 137.968316][ T5764] RBP: 00007f8c3e3f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 137.976318][ T5764] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 137.984283][ T5764] R13: 000000000000000b R14: 00007f8c3f31ff80 R15: 00007ffc85ff7248 [ 137.992269][ T5764] [ 137.995280][ T5739] CPU: 1 PID: 5739 Comm: syz.1.200 Not tainted syzkaller #0 [ 138.002581][ T5739] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 138.012742][ T5739] Call Trace: [ 138.016173][ T5739] [ 138.019104][ T5739] dump_stack_lvl+0x188/0x250 [ 138.023783][ T5739] ? show_regs_print_info+0x20/0x20 [ 138.028990][ T5739] ? load_image+0x410/0x410 [ 138.033609][ T5739] ? __lock_acquire+0x7b50/0x7b50 [ 138.038646][ T5739] should_fail+0x383/0x4b0 [ 138.043082][ T5739] _copy_from_user+0x2e/0x170 [ 138.047770][ T5739] kstrtouint_from_user+0xd3/0x220 [ 138.052877][ T5739] ? kstrtol_from_user+0x2a0/0x2a0 [ 138.058044][ T5739] proc_fail_nth_write+0x8b/0x200 [ 138.063076][ T5739] ? proc_fail_nth_read+0x220/0x220 [ 138.068344][ T5739] ? common_file_perm+0x171/0x1c0 [ 138.073358][ T5739] ? proc_fail_nth_read+0x220/0x220 [ 138.078541][ T5739] vfs_write+0x304/0xd70 [ 138.082777][ T5739] ? file_end_write+0x250/0x250 [ 138.087721][ T5739] ? mutex_lock_nested+0x17/0x20 [ 138.092651][ T5739] ? __fdget_pos+0x2bf/0x370 [ 138.097230][ T5739] ? ksys_write+0x70/0x260 [ 138.101633][ T5739] ksys_write+0x153/0x260 [ 138.106036][ T5739] ? __ia32_sys_read+0x80/0x80 [ 138.110798][ T5739] ? lockdep_hardirqs_on+0x94/0x140 [ 138.116166][ T5739] do_syscall_64+0x4c/0xa0 [ 138.120657][ T5739] ? clear_bhb_loop+0x30/0x80 [ 138.125406][ T5739] ? clear_bhb_loop+0x30/0x80 [ 138.130086][ T5739] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 138.135964][ T5739] RIP: 0033:0x7f3258da874e [ 138.140365][ T5739] 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 [ 138.160043][ T5739] RSP: 002b:00007f3258063ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 138.168529][ T5739] RAX: ffffffffffffffda RBX: 00007f32580646c0 RCX: 00007f3258da874e [ 138.176486][ T5739] RDX: 0000000000000001 RSI: 00007f32580640b0 RDI: 0000000000000007 [ 138.184445][ T5739] RBP: 00007f32580640a0 R08: 0000000000000000 R09: 0000000000000000 [ 138.192409][ T5739] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 138.200366][ T5739] R13: 000000000000000b R14: 00007f3258f8bf80 R15: 00007ffdf34c27f8 [ 138.208345][ T5739] [ 138.213987][ T5761] CPU: 0 PID: 5761 Comm: syz.3.203 Not tainted syzkaller #0 [ 138.215674][ T5766] FAULT_INJECTION: forcing a failure. [ 138.215674][ T5766] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 138.221298][ T5761] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 138.244630][ T5761] Call Trace: [ 138.247924][ T5761] [ 138.250878][ T5761] dump_stack_lvl+0x188/0x250 [ 138.255567][ T5761] ? show_regs_print_info+0x20/0x20 [ 138.260870][ T5761] ? load_image+0x410/0x410 [ 138.265391][ T5761] ? __lock_acquire+0x7b50/0x7b50 [ 138.270491][ T5761] should_fail+0x383/0x4b0 [ 138.274940][ T5761] _copy_from_user+0x2e/0x170 [ 138.279636][ T5761] kstrtouint_from_user+0xd3/0x220 [ 138.284768][ T5761] ? kstrtol_from_user+0x2a0/0x2a0 [ 138.289907][ T5761] proc_fail_nth_write+0x8b/0x200 [ 138.294942][ T5761] ? proc_fail_nth_read+0x220/0x220 [ 138.300148][ T5761] ? common_file_perm+0x171/0x1c0 [ 138.305195][ T5761] ? proc_fail_nth_read+0x220/0x220 [ 138.310797][ T5761] vfs_write+0x304/0xd70 [ 138.315074][ T5761] ? file_end_write+0x250/0x250 [ 138.316864][ T5771] FAULT_INJECTION: forcing a failure. [ 138.316864][ T5771] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 138.319954][ T5761] ? mutex_lock_nested+0x17/0x20 [ 138.338131][ T5761] ? __fdget_pos+0x2bf/0x370 [ 138.342736][ T5761] ? ksys_write+0x70/0x260 [ 138.347164][ T5761] ksys_write+0x153/0x260 [ 138.351514][ T5761] ? __ia32_sys_read+0x80/0x80 [ 138.356287][ T5761] ? lockdep_hardirqs_on+0x94/0x140 [ 138.361587][ T5761] do_syscall_64+0x4c/0xa0 [ 138.366016][ T5761] ? clear_bhb_loop+0x30/0x80 [ 138.370685][ T5761] ? clear_bhb_loop+0x30/0x80 [ 138.375357][ T5761] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 138.381245][ T5761] RIP: 0033:0x7f496b98e74e [ 138.385656][ T5761] 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 [ 138.405272][ T5761] RSP: 002b:00007f496ac49ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 138.413713][ T5761] RAX: ffffffffffffffda RBX: 00007f496ac4a6c0 RCX: 00007f496b98e74e [ 138.421687][ T5761] RDX: 0000000000000001 RSI: 00007f496ac4a0b0 RDI: 0000000000000007 [ 138.429656][ T5761] RBP: 00007f496ac4a0a0 R08: 0000000000000000 R09: 0000000000000000 [ 138.437619][ T5761] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 138.445585][ T5761] R13: 000000000000000b R14: 00007f496bb71f80 R15: 00007ffc8ba6e9a8 [ 138.453685][ T5761] [ 138.470198][ T5766] CPU: 1 PID: 5766 Comm: syz.0.205 Not tainted syzkaller #0 [ 138.477615][ T5766] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 138.487682][ T5766] Call Trace: [ 138.490975][ T5766] [ 138.493918][ T5766] dump_stack_lvl+0x188/0x250 [ 138.498612][ T5766] ? asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 138.504779][ T5766] ? show_regs_print_info+0x20/0x20 [ 138.509985][ T5766] ? load_image+0x410/0x410 [ 138.514489][ T5766] should_fail+0x383/0x4b0 [ 138.518927][ T5766] _copy_from_user+0x2e/0x170 [ 138.523779][ T5766] kstrtouint_from_user+0xd3/0x220 [ 138.528877][ T5766] ? kstrtol_from_user+0x2a0/0x2a0 [ 138.533987][ T5766] proc_fail_nth_write+0x8b/0x200 [ 138.538998][ T5766] ? proc_fail_nth_read+0x220/0x220 [ 138.544181][ T5766] ? common_file_perm+0x171/0x1c0 [ 138.549190][ T5766] ? proc_fail_nth_read+0x220/0x220 [ 138.554376][ T5766] vfs_write+0x304/0xd70 [ 138.558633][ T5766] ? file_end_write+0x250/0x250 [ 138.563505][ T5766] ? mutex_lock_nested+0x17/0x20 [ 138.568435][ T5766] ? __fdget_pos+0x2bf/0x370 [ 138.573016][ T5766] ? ksys_write+0x70/0x260 [ 138.577534][ T5766] ksys_write+0x153/0x260 [ 138.581851][ T5766] ? __ia32_sys_read+0x80/0x80 [ 138.586601][ T5766] ? lockdep_hardirqs_on+0x94/0x140 [ 138.591785][ T5766] do_syscall_64+0x4c/0xa0 [ 138.596191][ T5766] ? clear_bhb_loop+0x30/0x80 [ 138.600865][ T5766] ? clear_bhb_loop+0x30/0x80 [ 138.605526][ T5766] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 138.611403][ T5766] RIP: 0033:0x7f0a25ce074e [ 138.615825][ T5766] 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 [ 138.635416][ T5766] RSP: 002b:00007f0a24f9bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 138.643846][ T5766] RAX: ffffffffffffffda RBX: 00007f0a24f9c6c0 RCX: 00007f0a25ce074e [ 138.651809][ T5766] RDX: 0000000000000001 RSI: 00007f0a24f9c0b0 RDI: 0000000000000007 [ 138.659768][ T5766] RBP: 00007f0a24f9c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 138.667724][ T5766] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 138.675686][ T5766] R13: 000000000000000b R14: 00007f0a25ec3f80 R15: 00007fff8b3f2f08 [ 138.683656][ T5766] [ 138.701916][ T5772] FAULT_INJECTION: forcing a failure. [ 138.701916][ T5772] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 138.725543][ T5771] CPU: 1 PID: 5771 Comm: syz.4.206 Not tainted syzkaller #0 [ 138.733051][ T5771] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 138.743118][ T5771] Call Trace: [ 138.746399][ T5771] [ 138.749332][ T5771] dump_stack_lvl+0x188/0x250 [ 138.754021][ T5771] ? show_regs_print_info+0x20/0x20 [ 138.759229][ T5771] ? load_image+0x410/0x410 [ 138.763738][ T5771] ? __lock_acquire+0x7b50/0x7b50 [ 138.768774][ T5771] should_fail+0x383/0x4b0 [ 138.773206][ T5771] _copy_from_user+0x2e/0x170 [ 138.777874][ T5771] kstrtouint_from_user+0xd3/0x220 [ 138.783060][ T5771] ? kstrtol_from_user+0x2a0/0x2a0 [ 138.788164][ T5771] proc_fail_nth_write+0x8b/0x200 [ 138.793176][ T5771] ? proc_fail_nth_read+0x220/0x220 [ 138.798358][ T5771] ? common_file_perm+0x171/0x1c0 [ 138.803383][ T5771] ? proc_fail_nth_read+0x220/0x220 [ 138.808576][ T5771] vfs_write+0x304/0xd70 [ 138.812822][ T5771] ? file_end_write+0x250/0x250 [ 138.817666][ T5771] ? mutex_lock_nested+0x17/0x20 [ 138.822698][ T5771] ? __fdget_pos+0x2bf/0x370 [ 138.827291][ T5771] ? ksys_write+0x70/0x260 [ 138.831717][ T5771] ksys_write+0x153/0x260 [ 138.836044][ T5771] ? __ia32_sys_read+0x80/0x80 [ 138.840904][ T5771] ? lockdep_hardirqs_on+0x94/0x140 [ 138.846104][ T5771] do_syscall_64+0x4c/0xa0 [ 138.850514][ T5771] ? clear_bhb_loop+0x30/0x80 [ 138.855176][ T5771] ? clear_bhb_loop+0x30/0x80 [ 138.859838][ T5771] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 138.865749][ T5771] RIP: 0033:0x7f8c3f13c74e [ 138.870187][ T5771] 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 [ 138.889891][ T5771] RSP: 002b:00007f8c3e3d6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 138.898302][ T5771] RAX: ffffffffffffffda RBX: 00007f8c3e3d76c0 RCX: 00007f8c3f13c74e [ 138.906301][ T5771] RDX: 0000000000000001 RSI: 00007f8c3e3d70b0 RDI: 0000000000000004 [ 138.914268][ T5771] RBP: 00007f8c3e3d70a0 R08: 0000000000000000 R09: 0000000000000000 [ 138.922225][ T5771] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 138.930267][ T5771] R13: 000000000000006e R14: 00007f8c3f320058 R15: 00007ffc85ff7248 [ 138.938271][ T5771] [ 138.975225][ T5772] CPU: 1 PID: 5772 Comm: syz.2.207 Not tainted syzkaller #0 [ 138.982909][ T5772] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 138.992984][ T5772] Call Trace: [ 138.996369][ T5772] [ 138.999313][ T5772] dump_stack_lvl+0x188/0x250 [ 139.004025][ T5772] ? show_regs_print_info+0x20/0x20 [ 139.009240][ T5772] ? load_image+0x410/0x410 [ 139.013764][ T5772] ? __lock_acquire+0x7b50/0x7b50 [ 139.018822][ T5772] should_fail+0x383/0x4b0 [ 139.023260][ T5772] _copy_from_user+0x2e/0x170 [ 139.027955][ T5772] kstrtouint_from_user+0xd3/0x220 [ 139.033079][ T5772] ? kstrtol_from_user+0x2a0/0x2a0 [ 139.038211][ T5772] proc_fail_nth_write+0x8b/0x200 [ 139.043509][ T5772] ? proc_fail_nth_read+0x220/0x220 [ 139.048806][ T5772] ? common_file_perm+0x171/0x1c0 [ 139.053840][ T5772] ? proc_fail_nth_read+0x220/0x220 [ 139.059041][ T5772] vfs_write+0x304/0xd70 [ 139.063295][ T5772] ? file_end_write+0x250/0x250 [ 139.068339][ T5772] ? mutex_lock_nested+0x17/0x20 [ 139.073284][ T5772] ? __fdget_pos+0x2bf/0x370 [ 139.077880][ T5772] ? ksys_write+0x70/0x260 [ 139.082312][ T5772] ksys_write+0x153/0x260 [ 139.086656][ T5772] ? __ia32_sys_read+0x80/0x80 [ 139.091427][ T5772] ? lockdep_hardirqs_on+0x94/0x140 [ 139.096641][ T5772] do_syscall_64+0x4c/0xa0 [ 139.101061][ T5772] ? clear_bhb_loop+0x30/0x80 [ 139.105774][ T5772] ? clear_bhb_loop+0x30/0x80 [ 139.110455][ T5772] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 139.116611][ T5772] RIP: 0033:0x7f43fb03c74e [ 139.121035][ T5772] 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 [ 139.140853][ T5772] RSP: 002b:00007f43fa2f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 139.149266][ T5772] RAX: ffffffffffffffda RBX: 00007f43fa2f86c0 RCX: 00007f43fb03c74e [ 139.157225][ T5772] RDX: 0000000000000001 RSI: 00007f43fa2f80b0 RDI: 0000000000000006 [ 139.165189][ T5772] RBP: 00007f43fa2f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 139.173152][ T5772] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 139.181106][ T5772] R13: 000000000000000b R14: 00007f43fb21ff80 R15: 00007fffb4f5ab98 [ 139.189171][ T5772] [ 139.341985][ T5777] FAULT_INJECTION: forcing a failure. [ 139.341985][ T5777] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 139.341985][ T5782] FAULT_INJECTION: forcing a failure. [ 139.341985][ T5782] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 139.342014][ T5782] CPU: 1 PID: 5782 Comm: syz.3.209 Not tainted syzkaller #0 [ 139.375384][ T5782] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 139.385434][ T5782] Call Trace: [ 139.388698][ T5782] [ 139.391624][ T5782] dump_stack_lvl+0x188/0x250 [ 139.396382][ T5782] ? show_regs_print_info+0x20/0x20 [ 139.401570][ T5782] ? load_image+0x410/0x410 [ 139.406066][ T5782] ? __lock_acquire+0x7b50/0x7b50 [ 139.411083][ T5782] should_fail+0x383/0x4b0 [ 139.415487][ T5782] _copy_from_user+0x2e/0x170 [ 139.420169][ T5782] kstrtouint_from_user+0xd3/0x220 [ 139.425271][ T5782] ? kstrtol_from_user+0x2a0/0x2a0 [ 139.430481][ T5782] proc_fail_nth_write+0x8b/0x200 [ 139.435491][ T5782] ? proc_fail_nth_read+0x220/0x220 [ 139.440670][ T5782] ? common_file_perm+0x171/0x1c0 [ 139.445696][ T5782] ? proc_fail_nth_read+0x220/0x220 [ 139.450899][ T5782] vfs_write+0x304/0xd70 [ 139.455142][ T5782] ? file_end_write+0x250/0x250 [ 139.459985][ T5782] ? mutex_lock_nested+0x17/0x20 [ 139.464918][ T5782] ? __fdget_pos+0x2bf/0x370 [ 139.469491][ T5782] ? ksys_write+0x70/0x260 [ 139.473894][ T5782] ksys_write+0x153/0x260 [ 139.478304][ T5782] ? __ia32_sys_read+0x80/0x80 [ 139.483070][ T5782] ? lockdep_hardirqs_on+0x94/0x140 [ 139.488277][ T5782] do_syscall_64+0x4c/0xa0 [ 139.492694][ T5782] ? clear_bhb_loop+0x30/0x80 [ 139.497389][ T5782] ? clear_bhb_loop+0x30/0x80 [ 139.502054][ T5782] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 139.507929][ T5782] RIP: 0033:0x7f496b98e74e [ 139.512333][ T5782] 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 [ 139.531924][ T5782] RSP: 002b:00007f496ac49ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 139.540327][ T5782] RAX: ffffffffffffffda RBX: 00007f496ac4a6c0 RCX: 00007f496b98e74e [ 139.548316][ T5782] RDX: 0000000000000001 RSI: 00007f496ac4a0b0 RDI: 0000000000000007 [ 139.556274][ T5782] RBP: 00007f496ac4a0a0 R08: 0000000000000000 R09: 0000000000000000 [ 139.564226][ T5782] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 139.572196][ T5782] R13: 000000000000000b R14: 00007f496bb71f80 R15: 00007ffc8ba6e9a8 [ 139.580274][ T5782] [ 139.586351][ T5785] FAULT_INJECTION: forcing a failure. [ 139.586351][ T5785] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 139.602129][ T5777] CPU: 1 PID: 5777 Comm: syz.1.208 Not tainted syzkaller #0 [ 139.609434][ T5777] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 139.619492][ T5777] Call Trace: [ 139.622781][ T5777] [ 139.625708][ T5777] dump_stack_lvl+0x188/0x250 [ 139.630394][ T5777] ? show_regs_print_info+0x20/0x20 [ 139.635591][ T5777] ? load_image+0x410/0x410 [ 139.640100][ T5777] ? __lock_acquire+0x7b50/0x7b50 [ 139.645313][ T5777] should_fail+0x383/0x4b0 [ 139.649749][ T5777] _copy_from_user+0x2e/0x170 [ 139.654528][ T5777] kstrtouint_from_user+0xd3/0x220 [ 139.659738][ T5777] ? kstrtol_from_user+0x2a0/0x2a0 [ 139.664961][ T5777] proc_fail_nth_write+0x8b/0x200 [ 139.670007][ T5777] ? proc_fail_nth_read+0x220/0x220 [ 139.675306][ T5777] ? common_file_perm+0x171/0x1c0 [ 139.680350][ T5777] ? proc_fail_nth_read+0x220/0x220 [ 139.685554][ T5777] vfs_write+0x304/0xd70 [ 139.689899][ T5777] ? file_end_write+0x250/0x250 [ 139.694778][ T5777] ? mutex_lock_nested+0x17/0x20 [ 139.699726][ T5777] ? __fdget_pos+0x2bf/0x370 [ 139.704320][ T5777] ? ksys_write+0x70/0x260 [ 139.708749][ T5777] ksys_write+0x153/0x260 [ 139.713092][ T5777] ? __ia32_sys_read+0x80/0x80 [ 139.717866][ T5777] ? lockdep_hardirqs_on+0x94/0x140 [ 139.723074][ T5777] do_syscall_64+0x4c/0xa0 [ 139.727593][ T5777] ? clear_bhb_loop+0x30/0x80 [ 139.732274][ T5777] ? clear_bhb_loop+0x30/0x80 [ 139.736960][ T5777] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 139.741855][ T5793] FAULT_INJECTION: forcing a failure. [ 139.741855][ T5793] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 139.743123][ T5777] RIP: 0033:0x7f3258da874e [ 139.760513][ T5777] 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 [ 139.780153][ T5777] RSP: 002b:00007f3258063ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 139.788579][ T5777] RAX: ffffffffffffffda RBX: 00007f32580646c0 RCX: 00007f3258da874e [ 139.796565][ T5777] RDX: 0000000000000001 RSI: 00007f32580640b0 RDI: 0000000000000007 [ 139.804545][ T5777] RBP: 00007f32580640a0 R08: 0000000000000000 R09: 0000000000000000 [ 139.812528][ T5777] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 139.820588][ T5777] R13: 000000000000000b R14: 00007f3258f8bf80 R15: 00007ffdf34c27f8 [ 139.828584][ T5777] [ 139.841286][ T5793] CPU: 0 PID: 5793 Comm: syz.2.212 Not tainted syzkaller #0 [ 139.848878][ T5793] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 139.858948][ T5793] Call Trace: [ 139.862235][ T5793] [ 139.865310][ T5793] dump_stack_lvl+0x188/0x250 [ 139.870088][ T5793] ? show_regs_print_info+0x20/0x20 [ 139.875297][ T5793] ? load_image+0x410/0x410 [ 139.879802][ T5793] ? __lock_acquire+0x7b50/0x7b50 [ 139.884831][ T5793] should_fail+0x383/0x4b0 [ 139.889335][ T5793] _copy_from_user+0x2e/0x170 [ 139.894018][ T5793] kstrtouint_from_user+0xd3/0x220 [ 139.898919][ T5795] FAULT_INJECTION: forcing a failure. [ 139.898919][ T5795] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 139.899243][ T5793] ? kstrtol_from_user+0x2a0/0x2a0 [ 139.917514][ T5793] proc_fail_nth_write+0x8b/0x200 [ 139.922542][ T5793] ? proc_fail_nth_read+0x220/0x220 [ 139.927767][ T5793] ? common_file_perm+0x171/0x1c0 [ 139.932806][ T5793] ? proc_fail_nth_read+0x220/0x220 [ 139.938299][ T5793] vfs_write+0x304/0xd70 [ 139.942715][ T5793] ? file_end_write+0x250/0x250 [ 139.947576][ T5793] ? mutex_lock_nested+0x17/0x20 [ 139.952512][ T5793] ? __fdget_pos+0x2bf/0x370 [ 139.957094][ T5793] ? ksys_write+0x70/0x260 [ 139.961504][ T5793] ksys_write+0x153/0x260 [ 139.965832][ T5793] ? __ia32_sys_read+0x80/0x80 [ 139.970763][ T5793] ? lockdep_hardirqs_on+0x94/0x140 [ 139.975952][ T5793] do_syscall_64+0x4c/0xa0 [ 139.980366][ T5793] ? clear_bhb_loop+0x30/0x80 [ 139.985046][ T5793] ? clear_bhb_loop+0x30/0x80 [ 139.989730][ T5793] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 139.995628][ T5793] RIP: 0033:0x7f43fb03c74e [ 140.000043][ T5793] 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 [ 140.019654][ T5793] RSP: 002b:00007f43fa2d6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 140.028070][ T5793] RAX: ffffffffffffffda RBX: 00007f43fa2d76c0 RCX: 00007f43fb03c74e [ 140.036148][ T5793] RDX: 0000000000000001 RSI: 00007f43fa2d70b0 RDI: 0000000000000005 [ 140.044117][ T5793] RBP: 00007f43fa2d70a0 R08: 0000000000000000 R09: 0000000000000000 [ 140.052087][ T5793] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 140.060058][ T5793] R13: 000000000000006e R14: 00007f43fb220058 R15: 00007fffb4f5ab98 [ 140.068042][ T5793] [ 140.071057][ T5795] CPU: 1 PID: 5795 Comm: syz.0.211 Not tainted syzkaller #0 [ 140.078438][ T5795] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 140.088505][ T5795] Call Trace: [ 140.091885][ T5795] [ 140.094829][ T5795] dump_stack_lvl+0x188/0x250 [ 140.099538][ T5795] ? show_regs_print_info+0x20/0x20 [ 140.105108][ T5795] ? load_image+0x410/0x410 [ 140.109739][ T5795] ? __lock_acquire+0x7b50/0x7b50 [ 140.114875][ T5795] should_fail+0x383/0x4b0 [ 140.119506][ T5795] _copy_from_user+0x2e/0x170 [ 140.124207][ T5795] kstrtouint_from_user+0xd3/0x220 [ 140.129438][ T5795] ? kstrtol_from_user+0x2a0/0x2a0 [ 140.134576][ T5795] proc_fail_nth_write+0x8b/0x200 [ 140.139618][ T5795] ? proc_fail_nth_read+0x220/0x220 [ 140.144832][ T5795] ? common_file_perm+0x171/0x1c0 [ 140.149882][ T5795] ? proc_fail_nth_read+0x220/0x220 [ 140.155090][ T5795] vfs_write+0x304/0xd70 [ 140.159360][ T5795] ? file_end_write+0x250/0x250 [ 140.164238][ T5795] ? mutex_lock_nested+0x17/0x20 [ 140.169192][ T5795] ? __fdget_pos+0x2bf/0x370 [ 140.173795][ T5795] ? ksys_write+0x70/0x260 [ 140.178242][ T5795] ksys_write+0x153/0x260 [ 140.182608][ T5795] ? __ia32_sys_read+0x80/0x80 [ 140.187507][ T5795] ? lockdep_hardirqs_on+0x94/0x140 [ 140.192729][ T5795] do_syscall_64+0x4c/0xa0 [ 140.197164][ T5795] ? clear_bhb_loop+0x30/0x80 [ 140.201949][ T5795] ? clear_bhb_loop+0x30/0x80 [ 140.206660][ T5795] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 140.212587][ T5795] RIP: 0033:0x7f0a25ce074e [ 140.217020][ T5795] 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 [ 140.236774][ T5795] RSP: 002b:00007f0a24f7aff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 140.245224][ T5795] RAX: ffffffffffffffda RBX: 00007f0a24f7b6c0 RCX: 00007f0a25ce074e [ 140.253210][ T5795] RDX: 0000000000000001 RSI: 00007f0a24f7b0b0 RDI: 0000000000000005 [ 140.261194][ T5795] RBP: 00007f0a24f7b0a0 R08: 0000000000000000 R09: 0000000000000000 [ 140.269178][ T5795] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 140.277172][ T5795] R13: 000000000000006e R14: 00007f0a25ec4058 R15: 00007fff8b3f2f08 [ 140.285176][ T5795] [ 140.292538][ T5785] CPU: 1 PID: 5785 Comm: syz.4.210 Not tainted syzkaller #0 [ 140.299950][ T5785] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 140.310032][ T5785] Call Trace: [ 140.313319][ T5785] [ 140.316252][ T5785] dump_stack_lvl+0x188/0x250 [ 140.320948][ T5785] ? show_regs_print_info+0x20/0x20 [ 140.326168][ T5785] ? load_image+0x410/0x410 [ 140.330780][ T5785] ? __lock_acquire+0x7b50/0x7b50 [ 140.335855][ T5785] should_fail+0x383/0x4b0 [ 140.340304][ T5785] _copy_from_user+0x2e/0x170 [ 140.345000][ T5785] kstrtouint_from_user+0xd3/0x220 [ 140.350222][ T5785] ? kstrtol_from_user+0x2a0/0x2a0 [ 140.355428][ T5785] proc_fail_nth_write+0x8b/0x200 [ 140.360473][ T5785] ? proc_fail_nth_read+0x220/0x220 [ 140.365733][ T5785] ? common_file_perm+0x171/0x1c0 [ 140.370877][ T5785] ? proc_fail_nth_read+0x220/0x220 [ 140.376089][ T5785] vfs_write+0x304/0xd70 [ 140.380359][ T5785] ? file_end_write+0x250/0x250 [ 140.385251][ T5785] ? mutex_lock_nested+0x17/0x20 [ 140.390204][ T5785] ? __fdget_pos+0x2bf/0x370 [ 140.394813][ T5785] ? ksys_write+0x70/0x260 [ 140.399249][ T5785] ksys_write+0x153/0x260 [ 140.403597][ T5785] ? __ia32_sys_read+0x80/0x80 [ 140.408475][ T5785] ? lockdep_hardirqs_on+0x94/0x140 [ 140.413708][ T5785] do_syscall_64+0x4c/0xa0 [ 140.418138][ T5785] ? clear_bhb_loop+0x30/0x80 [ 140.422914][ T5785] ? clear_bhb_loop+0x30/0x80 [ 140.427612][ T5785] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 140.433547][ T5785] RIP: 0033:0x7f8c3f13c74e [ 140.437980][ T5785] 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 [ 140.457677][ T5785] RSP: 002b:00007f8c3e3f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 140.466087][ T5785] RAX: ffffffffffffffda RBX: 00007f8c3e3f86c0 RCX: 00007f8c3f13c74e [ 140.474479][ T5785] RDX: 0000000000000001 RSI: 00007f8c3e3f80b0 RDI: 0000000000000007 [ 140.482435][ T5785] RBP: 00007f8c3e3f80a0 R08: 0000000000000000 R09: 0000000000000000 2026/07/19 10:40:12 executed programs: 208 [ 140.490392][ T5785] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 140.498617][ T5785] R13: 000000000000000b R14: 00007f8c3f31ff80 R15: 00007ffc85ff7248 [ 140.506585][ T5785] [ 140.551510][ T5811] FAULT_INJECTION: forcing a failure. [ 140.551510][ T5811] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 140.596885][ T5811] CPU: 1 PID: 5811 Comm: syz.1.213 Not tainted syzkaller #0 [ 140.604210][ T5811] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 140.614251][ T5811] Call Trace: [ 140.617536][ T5811] [ 140.620467][ T5811] dump_stack_lvl+0x188/0x250 [ 140.625146][ T5811] ? show_regs_print_info+0x20/0x20 [ 140.630335][ T5811] ? load_image+0x410/0x410 [ 140.634836][ T5811] ? __lock_acquire+0x7b50/0x7b50 [ 140.639858][ T5811] should_fail+0x383/0x4b0 [ 140.644265][ T5811] _copy_from_user+0x2e/0x170 [ 140.649061][ T5811] kstrtouint_from_user+0xd3/0x220 [ 140.654163][ T5811] ? kstrtol_from_user+0x2a0/0x2a0 [ 140.659355][ T5811] proc_fail_nth_write+0x8b/0x200 [ 140.664452][ T5811] ? proc_fail_nth_read+0x220/0x220 [ 140.669720][ T5811] ? common_file_perm+0x171/0x1c0 [ 140.674735][ T5811] ? proc_fail_nth_read+0x220/0x220 [ 140.679917][ T5811] vfs_write+0x304/0xd70 [ 140.684166][ T5811] ? file_end_write+0x250/0x250 [ 140.689030][ T5811] ? mutex_lock_nested+0x17/0x20 [ 140.694050][ T5811] ? __fdget_pos+0x2bf/0x370 [ 140.698632][ T5811] ? ksys_write+0x70/0x260 [ 140.703041][ T5811] ksys_write+0x153/0x260 [ 140.707357][ T5811] ? __ia32_sys_read+0x80/0x80 [ 140.712109][ T5811] ? lockdep_hardirqs_on+0x94/0x140 [ 140.717294][ T5811] do_syscall_64+0x4c/0xa0 [ 140.721698][ T5811] ? clear_bhb_loop+0x30/0x80 [ 140.726363][ T5811] ? clear_bhb_loop+0x30/0x80 [ 140.731025][ T5811] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 140.736906][ T5811] RIP: 0033:0x7f3258da874e [ 140.741341][ T5811] 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 [ 140.760930][ T5811] RSP: 002b:00007f3258042ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 140.769445][ T5811] RAX: ffffffffffffffda RBX: 00007f32580436c0 RCX: 00007f3258da874e [ 140.777400][ T5811] RDX: 0000000000000001 RSI: 00007f32580430b0 RDI: 0000000000000005 [ 140.785377][ T5811] RBP: 00007f32580430a0 R08: 0000000000000000 R09: 0000000000000000 [ 140.793336][ T5811] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 140.801377][ T5811] R13: 000000000000006e R14: 00007f3258f8c058 R15: 00007ffdf34c27f8 [ 140.809444][ T5811] [ 140.826319][ T5813] FAULT_INJECTION: forcing a failure. [ 140.826319][ T5813] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 140.878981][ T5820] FAULT_INJECTION: forcing a failure. [ 140.878981][ T5820] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 140.889937][ T5813] CPU: 1 PID: 5813 Comm: syz.3.214 Not tainted syzkaller #0 [ 140.899306][ T5813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 140.909378][ T5813] Call Trace: [ 140.912681][ T5813] [ 140.915631][ T5813] dump_stack_lvl+0x188/0x250 [ 140.920326][ T5813] ? show_regs_print_info+0x20/0x20 [ 140.925522][ T5813] ? load_image+0x410/0x410 [ 140.930029][ T5813] ? __lock_acquire+0x7b50/0x7b50 [ 140.935076][ T5813] should_fail+0x383/0x4b0 [ 140.939504][ T5813] _copy_from_user+0x2e/0x170 [ 140.944210][ T5813] kstrtouint_from_user+0xd3/0x220 [ 140.949335][ T5813] ? kstrtol_from_user+0x2a0/0x2a0 [ 140.954472][ T5813] proc_fail_nth_write+0x8b/0x200 [ 140.959509][ T5813] ? proc_fail_nth_read+0x220/0x220 [ 140.964900][ T5813] ? common_file_perm+0x171/0x1c0 [ 140.969944][ T5813] ? proc_fail_nth_read+0x220/0x220 [ 140.975273][ T5813] vfs_write+0x304/0xd70 [ 140.979533][ T5813] ? file_end_write+0x250/0x250 [ 140.984405][ T5813] ? mutex_lock_nested+0x17/0x20 [ 140.989362][ T5813] ? __fdget_pos+0x2bf/0x370 [ 140.994059][ T5813] ? ksys_write+0x70/0x260 [ 140.998490][ T5813] ksys_write+0x153/0x260 [ 141.002870][ T5813] ? __ia32_sys_read+0x80/0x80 [ 141.007685][ T5813] ? lockdep_hardirqs_on+0x94/0x140 [ 141.012886][ T5813] do_syscall_64+0x4c/0xa0 [ 141.017298][ T5813] ? clear_bhb_loop+0x30/0x80 [ 141.021984][ T5813] ? clear_bhb_loop+0x30/0x80 [ 141.026676][ T5813] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 141.032587][ T5813] RIP: 0033:0x7f496b98e74e [ 141.037021][ T5813] 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 [ 141.056893][ T5813] RSP: 002b:00007f496ac49ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 141.065333][ T5813] RAX: ffffffffffffffda RBX: 00007f496ac4a6c0 RCX: 00007f496b98e74e [ 141.073406][ T5813] RDX: 0000000000000001 RSI: 00007f496ac4a0b0 RDI: 0000000000000007 [ 141.081386][ T5813] RBP: 00007f496ac4a0a0 R08: 0000000000000000 R09: 0000000000000000 [ 141.089467][ T5813] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 141.097439][ T5813] R13: 000000000000000b R14: 00007f496bb71f80 R15: 00007ffc8ba6e9a8 [ 141.105516][ T5813] [ 141.108530][ T5820] CPU: 0 PID: 5820 Comm: syz.2.216 Not tainted syzkaller #0 [ 141.115829][ T5820] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 141.125888][ T5820] Call Trace: [ 141.129182][ T5820] [ 141.132121][ T5820] dump_stack_lvl+0x188/0x250 [ 141.136900][ T5820] ? show_regs_print_info+0x20/0x20 [ 141.142115][ T5820] ? load_image+0x410/0x410 [ 141.146642][ T5820] ? __lock_acquire+0x7b50/0x7b50 [ 141.151685][ T5820] should_fail+0x383/0x4b0 [ 141.156117][ T5820] _copy_from_user+0x2e/0x170 [ 141.160834][ T5820] kstrtouint_from_user+0xd3/0x220 [ 141.165954][ T5820] ? kstrtol_from_user+0x2a0/0x2a0 [ 141.171094][ T5820] proc_fail_nth_write+0x8b/0x200 [ 141.176140][ T5820] ? proc_fail_nth_read+0x220/0x220 [ 141.177938][ T5831] FAULT_INJECTION: forcing a failure. [ 141.177938][ T5831] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 141.181343][ T5820] ? common_file_perm+0x171/0x1c0 [ 141.199447][ T5820] ? proc_fail_nth_read+0x220/0x220 [ 141.204665][ T5820] vfs_write+0x304/0xd70 [ 141.208993][ T5820] ? file_end_write+0x250/0x250 [ 141.213909][ T5820] ? mutex_lock_nested+0x17/0x20 [ 141.218866][ T5820] ? __fdget_pos+0x2bf/0x370 [ 141.223456][ T5820] ? ksys_write+0x70/0x260 [ 141.227881][ T5820] ksys_write+0x153/0x260 [ 141.232226][ T5820] ? __ia32_sys_read+0x80/0x80 [ 141.237134][ T5820] ? lockdep_hardirqs_on+0x94/0x140 [ 141.242363][ T5820] do_syscall_64+0x4c/0xa0 [ 141.246784][ T5820] ? clear_bhb_loop+0x30/0x80 [ 141.251468][ T5820] ? clear_bhb_loop+0x30/0x80 [ 141.256154][ T5820] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 141.262055][ T5820] RIP: 0033:0x7f43fb03c74e [ 141.266484][ T5820] 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 [ 141.286102][ T5820] RSP: 002b:00007f43fa2d6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 141.294609][ T5820] RAX: ffffffffffffffda RBX: 00007f43fa2d76c0 RCX: 00007f43fb03c74e [ 141.302674][ T5820] RDX: 0000000000000001 RSI: 00007f43fa2d70b0 RDI: 0000000000000005 [ 141.310745][ T5820] RBP: 00007f43fa2d70a0 R08: 0000000000000000 R09: 0000000000000000 [ 141.318724][ T5820] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 141.326697][ T5820] R13: 000000000000006e R14: 00007f43fb220058 R15: 00007fffb4f5ab98 [ 141.334694][ T5820] [ 141.337716][ T5831] CPU: 1 PID: 5831 Comm: syz.0.217 Not tainted syzkaller #0 [ 141.339516][ T5827] FAULT_INJECTION: forcing a failure. [ 141.339516][ T5827] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 141.345010][ T5831] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 141.368077][ T5831] Call Trace: [ 141.371359][ T5831] [ 141.374286][ T5831] dump_stack_lvl+0x188/0x250 [ 141.378962][ T5831] ? show_regs_print_info+0x20/0x20 [ 141.384252][ T5831] ? load_image+0x410/0x410 [ 141.388754][ T5831] ? __lock_acquire+0x7b50/0x7b50 [ 141.393910][ T5831] should_fail+0x383/0x4b0 [ 141.398321][ T5831] _copy_from_user+0x2e/0x170 [ 141.402988][ T5831] kstrtouint_from_user+0xd3/0x220 [ 141.408087][ T5831] ? kstrtol_from_user+0x2a0/0x2a0 [ 141.413212][ T5831] proc_fail_nth_write+0x8b/0x200 [ 141.418231][ T5831] ? proc_fail_nth_read+0x220/0x220 [ 141.423441][ T5831] ? common_file_perm+0x171/0x1c0 [ 141.428455][ T5831] ? proc_fail_nth_read+0x220/0x220 [ 141.433730][ T5831] vfs_write+0x304/0xd70 [ 141.437963][ T5831] ? file_end_write+0x250/0x250 [ 141.442809][ T5831] ? mutex_lock_nested+0x17/0x20 [ 141.447794][ T5831] ? __fdget_pos+0x2bf/0x370 [ 141.452366][ T5831] ? ksys_write+0x70/0x260 [ 141.456791][ T5831] ksys_write+0x153/0x260 [ 141.461114][ T5831] ? __ia32_sys_read+0x80/0x80 [ 141.465882][ T5831] ? lockdep_hardirqs_on+0x94/0x140 [ 141.471110][ T5831] do_syscall_64+0x4c/0xa0 [ 141.475518][ T5831] ? clear_bhb_loop+0x30/0x80 [ 141.480180][ T5831] ? clear_bhb_loop+0x30/0x80 [ 141.484875][ T5831] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 141.490753][ T5831] RIP: 0033:0x7f0a25ce074e [ 141.495153][ T5831] 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 [ 141.514744][ T5831] RSP: 002b:00007f0a24f7aff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 141.523234][ T5831] RAX: ffffffffffffffda RBX: 00007f0a24f7b6c0 RCX: 00007f0a25ce074e [ 141.531279][ T5831] RDX: 0000000000000001 RSI: 00007f0a24f7b0b0 RDI: 0000000000000005 [ 141.539252][ T5831] RBP: 00007f0a24f7b0a0 R08: 0000000000000000 R09: 0000000000000000 [ 141.547232][ T5831] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 141.555191][ T5831] R13: 000000000000006e R14: 00007f0a25ec4058 R15: 00007fff8b3f2f08 [ 141.563345][ T5831] [ 141.567292][ T5827] CPU: 0 PID: 5827 Comm: syz.4.215 Not tainted syzkaller #0 [ 141.574597][ T5827] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 141.584670][ T5827] Call Trace: [ 141.587946][ T5827] [ 141.590883][ T5827] dump_stack_lvl+0x188/0x250 [ 141.595569][ T5827] ? show_regs_print_info+0x20/0x20 [ 141.600788][ T5827] ? load_image+0x410/0x410 [ 141.605290][ T5827] ? __lock_acquire+0x7b50/0x7b50 [ 141.610320][ T5827] should_fail+0x383/0x4b0 [ 141.614730][ T5827] _copy_from_user+0x2e/0x170 [ 141.619398][ T5827] kstrtouint_from_user+0xd3/0x220 [ 141.624521][ T5827] ? kstrtol_from_user+0x2a0/0x2a0 [ 141.629627][ T5827] proc_fail_nth_write+0x8b/0x200 [ 141.634642][ T5827] ? proc_fail_nth_read+0x220/0x220 [ 141.639828][ T5827] ? common_file_perm+0x171/0x1c0 [ 141.644861][ T5827] ? proc_fail_nth_read+0x220/0x220 [ 141.650079][ T5827] vfs_write+0x304/0xd70 [ 141.654448][ T5827] ? file_end_write+0x250/0x250 [ 141.659301][ T5827] ? mutex_lock_nested+0x17/0x20 [ 141.664227][ T5827] ? __fdget_pos+0x2bf/0x370 [ 141.668807][ T5827] ? ksys_write+0x70/0x260 [ 141.673214][ T5827] ksys_write+0x153/0x260 [ 141.677558][ T5827] ? __ia32_sys_read+0x80/0x80 [ 141.682397][ T5827] ? lockdep_hardirqs_on+0x94/0x140 [ 141.687585][ T5827] do_syscall_64+0x4c/0xa0 [ 141.691986][ T5827] ? clear_bhb_loop+0x30/0x80 [ 141.696652][ T5827] ? clear_bhb_loop+0x30/0x80 [ 141.701319][ T5827] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 141.707325][ T5827] RIP: 0033:0x7f8c3f13c74e [ 141.711737][ T5827] 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 [ 141.731334][ T5827] RSP: 002b:00007f8c3e3d6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 141.739739][ T5827] RAX: ffffffffffffffda RBX: 00007f8c3e3d76c0 RCX: 00007f8c3f13c74e [ 141.747694][ T5827] RDX: 0000000000000001 RSI: 00007f8c3e3d70b0 RDI: 0000000000000005 [ 141.755647][ T5827] RBP: 00007f8c3e3d70a0 R08: 0000000000000000 R09: 0000000000000000 [ 141.763630][ T5827] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 141.771757][ T5827] R13: 000000000000006e R14: 00007f8c3f320058 R15: 00007ffc85ff7248 [ 141.779742][ T5827] [ 141.836253][ T5840] FAULT_INJECTION: forcing a failure. [ 141.836253][ T5840] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 141.850538][ T5841] FAULT_INJECTION: forcing a failure. [ 141.850538][ T5841] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 141.864530][ T5840] CPU: 1 PID: 5840 Comm: syz.3.219 Not tainted syzkaller #0 [ 141.871944][ T5840] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 141.882168][ T5840] Call Trace: [ 141.885435][ T5840] [ 141.888358][ T5840] dump_stack_lvl+0x188/0x250 [ 141.893026][ T5840] ? show_regs_print_info+0x20/0x20 [ 141.898212][ T5840] ? load_image+0x410/0x410 [ 141.902887][ T5840] ? __lock_acquire+0x7b50/0x7b50 [ 141.907899][ T5840] should_fail+0x383/0x4b0 [ 141.912304][ T5840] _copy_from_user+0x2e/0x170 [ 141.916978][ T5840] kstrtouint_from_user+0xd3/0x220 [ 141.922073][ T5840] ? kstrtol_from_user+0x2a0/0x2a0 [ 141.927274][ T5840] proc_fail_nth_write+0x8b/0x200 [ 141.932378][ T5840] ? proc_fail_nth_read+0x220/0x220 [ 141.937562][ T5840] ? common_file_perm+0x171/0x1c0 [ 141.942575][ T5840] ? proc_fail_nth_read+0x220/0x220 [ 141.947758][ T5840] vfs_write+0x304/0xd70 [ 141.952075][ T5840] ? file_end_write+0x250/0x250 [ 141.956926][ T5840] ? mutex_lock_nested+0x17/0x20 [ 141.961853][ T5840] ? __fdget_pos+0x2bf/0x370 [ 141.966436][ T5840] ? ksys_write+0x70/0x260 [ 141.970961][ T5840] ksys_write+0x153/0x260 [ 141.975275][ T5840] ? __ia32_sys_read+0x80/0x80 [ 141.980112][ T5840] ? lockdep_hardirqs_on+0x94/0x140 [ 141.985307][ T5840] do_syscall_64+0x4c/0xa0 [ 141.989709][ T5840] ? clear_bhb_loop+0x30/0x80 [ 141.994474][ T5840] ? clear_bhb_loop+0x30/0x80 [ 141.999144][ T5840] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 142.005110][ T5840] RIP: 0033:0x7f496b98e74e [ 142.009511][ T5840] 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 [ 142.029280][ T5840] RSP: 002b:00007f496ac49ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 142.037682][ T5840] RAX: ffffffffffffffda RBX: 00007f496ac4a6c0 RCX: 00007f496b98e74e [ 142.045639][ T5840] RDX: 0000000000000001 RSI: 00007f496ac4a0b0 RDI: 0000000000000007 [ 142.053606][ T5840] RBP: 00007f496ac4a0a0 R08: 0000000000000000 R09: 0000000000000000 [ 142.061562][ T5840] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 142.069604][ T5840] R13: 000000000000000b R14: 00007f496bb71f80 R15: 00007ffc8ba6e9a8 [ 142.077574][ T5840] [ 142.088022][ T5841] CPU: 0 PID: 5841 Comm: syz.1.218 Not tainted syzkaller #0 [ 142.095350][ T5841] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 142.105581][ T5841] Call Trace: [ 142.108855][ T5841] [ 142.111773][ T5841] dump_stack_lvl+0x188/0x250 [ 142.116442][ T5841] ? show_regs_print_info+0x20/0x20 [ 142.121628][ T5841] ? load_image+0x410/0x410 [ 142.126119][ T5841] ? __lock_acquire+0x7b50/0x7b50 [ 142.131134][ T5841] should_fail+0x383/0x4b0 [ 142.135544][ T5841] _copy_from_user+0x2e/0x170 [ 142.140221][ T5841] kstrtouint_from_user+0xd3/0x220 [ 142.145410][ T5841] ? kstrtol_from_user+0x2a0/0x2a0 [ 142.150519][ T5841] proc_fail_nth_write+0x8b/0x200 [ 142.155556][ T5841] ? proc_fail_nth_read+0x220/0x220 [ 142.160739][ T5841] ? common_file_perm+0x171/0x1c0 [ 142.165760][ T5841] ? proc_fail_nth_read+0x220/0x220 [ 142.170940][ T5841] vfs_write+0x304/0xd70 [ 142.175175][ T5841] ? file_end_write+0x250/0x250 [ 142.180022][ T5841] ? mutex_lock_nested+0x17/0x20 [ 142.184948][ T5841] ? __fdget_pos+0x2bf/0x370 [ 142.189533][ T5841] ? ksys_write+0x70/0x260 [ 142.193938][ T5841] ksys_write+0x153/0x260 [ 142.198251][ T5841] ? __ia32_sys_read+0x80/0x80 [ 142.202998][ T5841] ? lockdep_hardirqs_on+0x94/0x140 [ 142.208354][ T5841] do_syscall_64+0x4c/0xa0 [ 142.212848][ T5841] ? clear_bhb_loop+0x30/0x80 [ 142.217509][ T5841] ? clear_bhb_loop+0x30/0x80 [ 142.222168][ T5841] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 142.228044][ T5841] RIP: 0033:0x7f3258da874e [ 142.232447][ T5841] 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 [ 142.252212][ T5841] RSP: 002b:00007f3258042ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 142.260620][ T5841] RAX: ffffffffffffffda RBX: 00007f32580436c0 RCX: 00007f3258da874e [ 142.268576][ T5841] RDX: 0000000000000001 RSI: 00007f32580430b0 RDI: 0000000000000005 [ 142.276627][ T5841] RBP: 00007f32580430a0 R08: 0000000000000000 R09: 0000000000000000 [ 142.284680][ T5841] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 142.292646][ T5841] R13: 000000000000006e R14: 00007f3258f8c058 R15: 00007ffdf34c27f8 [ 142.300624][ T5841] [ 142.391820][ T5847] FAULT_INJECTION: forcing a failure. [ 142.391820][ T5847] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 142.424385][ T5847] CPU: 1 PID: 5847 Comm: syz.4.221 Not tainted syzkaller #0 [ 142.431719][ T5847] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 142.441806][ T5847] Call Trace: [ 142.445095][ T5847] [ 142.448035][ T5847] dump_stack_lvl+0x188/0x250 [ 142.452735][ T5847] ? show_regs_print_info+0x20/0x20 [ 142.458044][ T5847] ? load_image+0x410/0x410 [ 142.462566][ T5847] ? __lock_acquire+0x7b50/0x7b50 [ 142.467608][ T5847] should_fail+0x383/0x4b0 [ 142.472041][ T5847] _copy_from_user+0x2e/0x170 [ 142.476733][ T5847] kstrtouint_from_user+0xd3/0x220 [ 142.482035][ T5847] ? kstrtol_from_user+0x2a0/0x2a0 [ 142.487166][ T5847] proc_fail_nth_write+0x8b/0x200 [ 142.492196][ T5847] ? proc_fail_nth_read+0x220/0x220 [ 142.497397][ T5847] ? common_file_perm+0x171/0x1c0 [ 142.502438][ T5847] ? proc_fail_nth_read+0x220/0x220 [ 142.507652][ T5847] vfs_write+0x304/0xd70 [ 142.511915][ T5847] ? file_end_write+0x250/0x250 [ 142.516794][ T5847] ? mutex_lock_nested+0x17/0x20 [ 142.521741][ T5847] ? __fdget_pos+0x2bf/0x370 [ 142.526322][ T5847] ? ksys_write+0x70/0x260 [ 142.530726][ T5847] ksys_write+0x153/0x260 [ 142.535041][ T5847] ? __ia32_sys_read+0x80/0x80 [ 142.539796][ T5847] ? lockdep_hardirqs_on+0x94/0x140 [ 142.544985][ T5847] do_syscall_64+0x4c/0xa0 [ 142.549384][ T5847] ? clear_bhb_loop+0x30/0x80 [ 142.554051][ T5847] ? clear_bhb_loop+0x30/0x80 [ 142.558801][ T5847] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 142.564703][ T5847] RIP: 0033:0x7f8c3f13c74e [ 142.569192][ T5847] 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 [ 142.588784][ T5847] RSP: 002b:00007f8c3e3f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 142.597197][ T5847] RAX: ffffffffffffffda RBX: 00007f8c3e3f86c0 RCX: 00007f8c3f13c74e [ 142.605253][ T5847] RDX: 0000000000000001 RSI: 00007f8c3e3f80b0 RDI: 0000000000000007 [ 142.613491][ T5847] RBP: 00007f8c3e3f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 142.621444][ T5847] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 142.629401][ T5847] R13: 000000000000000b R14: 00007f8c3f31ff80 R15: 00007ffc85ff7248 [ 142.637371][ T5847] [ 142.650202][ T5855] FAULT_INJECTION: forcing a failure. [ 142.650202][ T5855] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 142.666451][ T5855] CPU: 1 PID: 5855 Comm: syz.1.223 Not tainted syzkaller #0 [ 142.673766][ T5855] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 142.683833][ T5855] Call Trace: [ 142.687108][ T5855] [ 142.690025][ T5855] dump_stack_lvl+0x188/0x250 [ 142.694698][ T5855] ? show_regs_print_info+0x20/0x20 [ 142.699884][ T5855] ? load_image+0x410/0x410 [ 142.704376][ T5855] ? __lock_acquire+0x7b50/0x7b50 [ 142.709741][ T5855] should_fail+0x383/0x4b0 [ 142.714148][ T5855] _copy_from_user+0x2e/0x170 [ 142.718813][ T5855] kstrtouint_from_user+0xd3/0x220 [ 142.723939][ T5855] ? kstrtol_from_user+0x2a0/0x2a0 [ 142.729233][ T5855] proc_fail_nth_write+0x8b/0x200 [ 142.734247][ T5855] ? proc_fail_nth_read+0x220/0x220 [ 142.739424][ T5855] ? common_file_perm+0x171/0x1c0 [ 142.744433][ T5855] ? proc_fail_nth_read+0x220/0x220 [ 142.749617][ T5855] vfs_write+0x304/0xd70 [ 142.753848][ T5855] ? file_end_write+0x250/0x250 [ 142.758705][ T5855] ? mutex_lock_nested+0x17/0x20 [ 142.763719][ T5855] ? __fdget_pos+0x2bf/0x370 [ 142.768288][ T5855] ? ksys_write+0x70/0x260 [ 142.772691][ T5855] ksys_write+0x153/0x260 [ 142.777176][ T5855] ? __ia32_sys_read+0x80/0x80 [ 142.781922][ T5855] ? lockdep_hardirqs_on+0x94/0x140 [ 142.787102][ T5855] do_syscall_64+0x4c/0xa0 [ 142.791501][ T5855] ? clear_bhb_loop+0x30/0x80 [ 142.796157][ T5855] ? clear_bhb_loop+0x30/0x80 [ 142.800816][ T5855] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 142.806777][ T5855] RIP: 0033:0x7f3258da874e [ 142.811177][ T5855] 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 [ 142.830769][ T5855] RSP: 002b:00007f3258042ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 142.839282][ T5855] RAX: ffffffffffffffda RBX: 00007f32580436c0 RCX: 00007f3258da874e [ 142.847238][ T5855] RDX: 0000000000000001 RSI: 00007f32580430b0 RDI: 0000000000000005 [ 142.855266][ T5855] RBP: 00007f32580430a0 R08: 0000000000000000 R09: 0000000000000000 [ 142.863236][ T5855] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 142.871204][ T5855] R13: 000000000000006e R14: 00007f3258f8c058 R15: 00007ffdf34c27f8 [ 142.879180][ T5855] [ 142.928431][ T5860] FAULT_INJECTION: forcing a failure. [ 142.928431][ T5860] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 142.942585][ T5860] CPU: 0 PID: 5860 Comm: syz.0.224 Not tainted syzkaller #0 [ 142.949933][ T5860] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 142.960502][ T5860] Call Trace: [ 142.963768][ T5860] [ 142.966687][ T5860] dump_stack_lvl+0x188/0x250 [ 142.971360][ T5860] ? show_regs_print_info+0x20/0x20 [ 142.976544][ T5860] ? load_image+0x410/0x410 [ 142.981037][ T5860] ? __lock_acquire+0x7b50/0x7b50 [ 142.986051][ T5860] should_fail+0x383/0x4b0 [ 142.990456][ T5860] _copy_from_user+0x2e/0x170 [ 142.995216][ T5860] kstrtouint_from_user+0xd3/0x220 [ 143.000318][ T5860] ? kstrtol_from_user+0x2a0/0x2a0 [ 143.005431][ T5860] proc_fail_nth_write+0x8b/0x200 [ 143.010473][ T5860] ? proc_fail_nth_read+0x220/0x220 [ 143.015665][ T5860] ? common_file_perm+0x171/0x1c0 [ 143.020680][ T5860] ? proc_fail_nth_read+0x220/0x220 [ 143.025860][ T5860] vfs_write+0x304/0xd70 [ 143.030089][ T5860] ? file_end_write+0x250/0x250 [ 143.034931][ T5860] ? mutex_lock_nested+0x17/0x20 [ 143.039867][ T5860] ? __fdget_pos+0x2bf/0x370 [ 143.044443][ T5860] ? ksys_write+0x70/0x260 [ 143.048843][ T5860] ksys_write+0x153/0x260 [ 143.053166][ T5860] ? __ia32_sys_read+0x80/0x80 [ 143.057924][ T5860] ? lockdep_hardirqs_on+0x94/0x140 [ 143.063195][ T5860] do_syscall_64+0x4c/0xa0 [ 143.067599][ T5860] ? clear_bhb_loop+0x30/0x80 [ 143.072264][ T5860] ? clear_bhb_loop+0x30/0x80 [ 143.076923][ T5860] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 143.082903][ T5860] RIP: 0033:0x7f0a25ce074e [ 143.087302][ T5860] 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 [ 143.106891][ T5860] RSP: 002b:00007f0a24f9bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 143.115377][ T5860] RAX: ffffffffffffffda RBX: 00007f0a24f9c6c0 RCX: 00007f0a25ce074e [ 143.123431][ T5860] RDX: 0000000000000001 RSI: 00007f0a24f9c0b0 RDI: 0000000000000007 [ 143.131397][ T5860] RBP: 00007f0a24f9c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 143.139348][ T5860] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 143.147299][ T5860] R13: 000000000000000b R14: 00007f0a25ec3f80 R15: 00007fff8b3f2f08 [ 143.155262][ T5860] [ 143.164369][ T5857] FAULT_INJECTION: forcing a failure. [ 143.164369][ T5857] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 143.191132][ T5857] CPU: 1 PID: 5857 Comm: syz.3.220 Not tainted syzkaller #0 [ 143.198469][ T5857] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 143.208545][ T5857] Call Trace: [ 143.211821][ T5857] [ 143.214851][ T5857] dump_stack_lvl+0x188/0x250 [ 143.219523][ T5857] ? show_regs_print_info+0x20/0x20 [ 143.224706][ T5857] ? load_image+0x410/0x410 [ 143.229202][ T5857] ? __lock_acquire+0x7b50/0x7b50 [ 143.234225][ T5857] should_fail+0x383/0x4b0 [ 143.238630][ T5857] _copy_from_user+0x2e/0x170 [ 143.243296][ T5857] kstrtouint_from_user+0xd3/0x220 [ 143.248391][ T5857] ? kstrtol_from_user+0x2a0/0x2a0 [ 143.253502][ T5857] proc_fail_nth_write+0x8b/0x200 [ 143.258511][ T5857] ? proc_fail_nth_read+0x220/0x220 [ 143.263692][ T5857] ? common_file_perm+0x171/0x1c0 [ 143.268703][ T5857] ? proc_fail_nth_read+0x220/0x220 [ 143.273914][ T5857] vfs_write+0x304/0xd70 [ 143.278150][ T5857] ? file_end_write+0x250/0x250 [ 143.282994][ T5857] ? mutex_lock_nested+0x17/0x20 [ 143.287914][ T5857] ? __fdget_pos+0x2bf/0x370 [ 143.292568][ T5857] ? ksys_write+0x70/0x260 [ 143.296978][ T5857] ksys_write+0x153/0x260 [ 143.301300][ T5857] ? __ia32_sys_read+0x80/0x80 [ 143.306325][ T5857] ? lockdep_hardirqs_on+0x94/0x140 [ 143.311732][ T5857] do_syscall_64+0x4c/0xa0 [ 143.316155][ T5857] ? clear_bhb_loop+0x30/0x80 [ 143.320823][ T5857] ? clear_bhb_loop+0x30/0x80 [ 143.325580][ T5857] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 143.331462][ T5857] RIP: 0033:0x7f496b98e74e [ 143.335881][ T5857] 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 [ 143.355582][ T5857] RSP: 002b:00007f496ac28ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 143.364005][ T5857] RAX: ffffffffffffffda RBX: 00007f496ac296c0 RCX: 00007f496b98e74e [ 143.371963][ T5857] RDX: 0000000000000001 RSI: 00007f496ac290b0 RDI: 0000000000000005 [ 143.379922][ T5857] RBP: 00007f496ac290a0 R08: 0000000000000000 R09: 0000000000000000 [ 143.387879][ T5857] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 143.395833][ T5857] R13: 000000000000006e R14: 00007f496bb72058 R15: 00007ffc8ba6e9a8 [ 143.403802][ T5857] [ 143.408904][ T5854] FAULT_INJECTION: forcing a failure. [ 143.408904][ T5854] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 143.462313][ T5863] FAULT_INJECTION: forcing a failure. [ 143.462313][ T5863] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 143.485853][ T5854] CPU: 1 PID: 5854 Comm: syz.2.222 Not tainted syzkaller #0 [ 143.493183][ T5854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 143.503253][ T5854] Call Trace: [ 143.506546][ T5854] [ 143.509487][ T5854] dump_stack_lvl+0x188/0x250 [ 143.514264][ T5854] ? show_regs_print_info+0x20/0x20 [ 143.519458][ T5854] ? load_image+0x410/0x410 [ 143.523953][ T5854] ? __lock_acquire+0x7b50/0x7b50 [ 143.529057][ T5854] should_fail+0x383/0x4b0 [ 143.533463][ T5854] _copy_from_user+0x2e/0x170 [ 143.538127][ T5854] kstrtouint_from_user+0xd3/0x220 [ 143.543225][ T5854] ? kstrtol_from_user+0x2a0/0x2a0 [ 143.548337][ T5854] proc_fail_nth_write+0x8b/0x200 [ 143.553347][ T5854] ? proc_fail_nth_read+0x220/0x220 [ 143.558536][ T5854] ? common_file_perm+0x171/0x1c0 [ 143.563555][ T5854] ? proc_fail_nth_read+0x220/0x220 [ 143.568737][ T5854] vfs_write+0x304/0xd70 [ 143.572980][ T5854] ? file_end_write+0x250/0x250 [ 143.577827][ T5854] ? mutex_lock_nested+0x17/0x20 [ 143.582838][ T5854] ? __fdget_pos+0x2bf/0x370 [ 143.587439][ T5854] ? ksys_write+0x70/0x260 [ 143.591929][ T5854] ksys_write+0x153/0x260 [ 143.596246][ T5854] ? __ia32_sys_read+0x80/0x80 [ 143.601001][ T5854] ? lockdep_hardirqs_on+0x94/0x140 [ 143.606203][ T5854] do_syscall_64+0x4c/0xa0 [ 143.610628][ T5854] ? clear_bhb_loop+0x30/0x80 [ 143.615287][ T5854] ? clear_bhb_loop+0x30/0x80 [ 143.619950][ T5854] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 143.625840][ T5854] RIP: 0033:0x7f43fb03c74e [ 143.630263][ T5854] 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 [ 143.649959][ T5854] RSP: 002b:00007f43fa2f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 143.658368][ T5854] RAX: ffffffffffffffda RBX: 00007f43fa2f86c0 RCX: 00007f43fb03c74e [ 143.666525][ T5854] RDX: 0000000000000001 RSI: 00007f43fa2f80b0 RDI: 0000000000000007 [ 143.674498][ T5854] RBP: 00007f43fa2f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 143.682452][ T5854] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 143.690407][ T5854] R13: 000000000000000b R14: 00007f43fb21ff80 R15: 00007fffb4f5ab98 [ 143.698485][ T5854] [ 143.708193][ T5865] FAULT_INJECTION: forcing a failure. [ 143.708193][ T5865] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 143.728594][ T5870] FAULT_INJECTION: forcing a failure. [ 143.728594][ T5870] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 143.750006][ T5865] CPU: 1 PID: 5865 Comm: syz.1.225 Not tainted syzkaller #0 [ 143.757328][ T5865] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 143.767371][ T5865] Call Trace: [ 143.770636][ T5865] [ 143.773815][ T5865] dump_stack_lvl+0x188/0x250 [ 143.778484][ T5865] ? show_regs_print_info+0x20/0x20 [ 143.783669][ T5865] ? load_image+0x410/0x410 [ 143.788160][ T5865] ? __lock_acquire+0x7b50/0x7b50 [ 143.793173][ T5865] should_fail+0x383/0x4b0 [ 143.797577][ T5865] _copy_from_user+0x2e/0x170 [ 143.802241][ T5865] kstrtouint_from_user+0xd3/0x220 [ 143.807423][ T5865] ? kstrtol_from_user+0x2a0/0x2a0 [ 143.812560][ T5865] proc_fail_nth_write+0x8b/0x200 [ 143.817588][ T5865] ? proc_fail_nth_read+0x220/0x220 [ 143.822788][ T5865] ? common_file_perm+0x171/0x1c0 [ 143.827848][ T5865] ? proc_fail_nth_read+0x220/0x220 [ 143.833128][ T5865] vfs_write+0x304/0xd70 [ 143.837368][ T5865] ? file_end_write+0x250/0x250 [ 143.842309][ T5865] ? mutex_lock_nested+0x17/0x20 [ 143.847231][ T5865] ? __fdget_pos+0x2bf/0x370 [ 143.851805][ T5865] ? ksys_write+0x70/0x260 [ 143.856290][ T5865] ksys_write+0x153/0x260 [ 143.860615][ T5865] ? __ia32_sys_read+0x80/0x80 [ 143.865456][ T5865] ? lockdep_hardirqs_on+0x94/0x140 [ 143.870645][ T5865] do_syscall_64+0x4c/0xa0 [ 143.875303][ T5865] ? clear_bhb_loop+0x30/0x80 [ 143.879966][ T5865] ? clear_bhb_loop+0x30/0x80 [ 143.884772][ T5865] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 143.890668][ T5865] RIP: 0033:0x7f3258da874e [ 143.895165][ T5865] 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 [ 143.914877][ T5865] RSP: 002b:00007f3258063ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 143.923280][ T5865] RAX: ffffffffffffffda RBX: 00007f32580646c0 RCX: 00007f3258da874e [ 143.931245][ T5865] RDX: 0000000000000001 RSI: 00007f32580640b0 RDI: 0000000000000007 [ 143.939214][ T5865] RBP: 00007f32580640a0 R08: 0000000000000000 R09: 0000000000000000 [ 143.947176][ T5865] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 143.955130][ T5865] R13: 000000000000000b R14: 00007f3258f8bf80 R15: 00007ffdf34c27f8 [ 143.963098][ T5865] [ 143.971103][ T5868] FAULT_INJECTION: forcing a failure. [ 143.971103][ T5868] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 143.974061][ T5863] CPU: 0 PID: 5863 Comm: syz.4.226 Not tainted syzkaller #0 [ 143.991520][ T5863] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 144.001582][ T5863] Call Trace: [ 144.004859][ T5863] [ 144.007785][ T5863] dump_stack_lvl+0x188/0x250 [ 144.012481][ T5863] ? show_regs_print_info+0x20/0x20 [ 144.017699][ T5863] ? load_image+0x410/0x410 [ 144.022215][ T5863] ? __lock_acquire+0x7b50/0x7b50 [ 144.027250][ T5863] should_fail+0x383/0x4b0 [ 144.031678][ T5863] _copy_from_user+0x2e/0x170 [ 144.036359][ T5863] kstrtouint_from_user+0xd3/0x220 [ 144.041479][ T5863] ? kstrtol_from_user+0x2a0/0x2a0 [ 144.046699][ T5863] proc_fail_nth_write+0x8b/0x200 [ 144.051988][ T5863] ? proc_fail_nth_read+0x220/0x220 [ 144.057192][ T5863] ? common_file_perm+0x171/0x1c0 [ 144.062237][ T5863] ? proc_fail_nth_read+0x220/0x220 [ 144.067431][ T5863] vfs_write+0x304/0xd70 [ 144.071690][ T5863] ? file_end_write+0x250/0x250 [ 144.076560][ T5863] ? mutex_lock_nested+0x17/0x20 [ 144.081679][ T5863] ? __fdget_pos+0x2bf/0x370 [ 144.086260][ T5863] ? ksys_write+0x70/0x260 [ 144.090683][ T5863] ksys_write+0x153/0x260 [ 144.095013][ T5863] ? __ia32_sys_read+0x80/0x80 [ 144.099796][ T5863] ? lockdep_hardirqs_on+0x94/0x140 [ 144.105010][ T5863] do_syscall_64+0x4c/0xa0 [ 144.109435][ T5863] ? clear_bhb_loop+0x30/0x80 [ 144.114106][ T5863] ? clear_bhb_loop+0x30/0x80 [ 144.118871][ T5863] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 144.124865][ T5863] RIP: 0033:0x7f8c3f13c74e [ 144.129295][ T5863] 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 [ 144.148902][ T5863] RSP: 002b:00007f8c3e3f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 144.157326][ T5863] RAX: ffffffffffffffda RBX: 00007f8c3e3f86c0 RCX: 00007f8c3f13c74e [ 144.165301][ T5863] RDX: 0000000000000001 RSI: 00007f8c3e3f80b0 RDI: 0000000000000007 [ 144.173278][ T5863] RBP: 00007f8c3e3f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 144.181258][ T5863] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 144.189326][ T5863] R13: 000000000000000b R14: 00007f8c3f31ff80 R15: 00007ffc85ff7248 [ 144.197380][ T5863] [ 144.206929][ T5868] CPU: 1 PID: 5868 Comm: syz.0.228 Not tainted syzkaller #0 [ 144.214355][ T5868] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 144.224420][ T5868] Call Trace: [ 144.227718][ T5868] [ 144.230670][ T5868] dump_stack_lvl+0x188/0x250 [ 144.235367][ T5868] ? show_regs_print_info+0x20/0x20 [ 144.240582][ T5868] ? load_image+0x410/0x410 [ 144.245101][ T5868] ? __lock_acquire+0x7b50/0x7b50 [ 144.250179][ T5868] should_fail+0x383/0x4b0 [ 144.254594][ T5868] _copy_from_user+0x2e/0x170 [ 144.259282][ T5868] kstrtouint_from_user+0xd3/0x220 [ 144.264394][ T5868] ? kstrtol_from_user+0x2a0/0x2a0 [ 144.269501][ T5868] proc_fail_nth_write+0x8b/0x200 [ 144.274519][ T5868] ? proc_fail_nth_read+0x220/0x220 [ 144.279705][ T5868] ? common_file_perm+0x171/0x1c0 [ 144.284816][ T5868] ? proc_fail_nth_read+0x220/0x220 [ 144.290000][ T5868] vfs_write+0x304/0xd70 [ 144.294232][ T5868] ? file_end_write+0x250/0x250 [ 144.299075][ T5868] ? mutex_lock_nested+0x17/0x20 [ 144.304089][ T5868] ? __fdget_pos+0x2bf/0x370 [ 144.308661][ T5868] ? ksys_write+0x70/0x260 [ 144.313070][ T5868] ksys_write+0x153/0x260 [ 144.317385][ T5868] ? __ia32_sys_read+0x80/0x80 [ 144.322157][ T5868] ? lockdep_hardirqs_on+0x94/0x140 [ 144.327372][ T5868] do_syscall_64+0x4c/0xa0 [ 144.331773][ T5868] ? clear_bhb_loop+0x30/0x80 [ 144.336433][ T5868] ? clear_bhb_loop+0x30/0x80 [ 144.341092][ T5868] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 144.346967][ T5868] RIP: 0033:0x7f0a25ce074e [ 144.351373][ T5868] 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 [ 144.371399][ T5868] RSP: 002b:00007f0a24f9bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 144.379800][ T5868] RAX: ffffffffffffffda RBX: 00007f0a24f9c6c0 RCX: 00007f0a25ce074e [ 144.387799][ T5868] RDX: 0000000000000001 RSI: 00007f0a24f9c0b0 RDI: 0000000000000007 [ 144.395790][ T5868] RBP: 00007f0a24f9c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 144.403754][ T5868] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 144.411733][ T5868] R13: 000000000000000b R14: 00007f0a25ec3f80 R15: 00007fff8b3f2f08 [ 144.419710][ T5868] [ 144.432173][ T5870] CPU: 0 PID: 5870 Comm: syz.3.227 Not tainted syzkaller #0 [ 144.439503][ T5870] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 144.449662][ T5870] Call Trace: [ 144.453035][ T5870] [ 144.455948][ T5870] dump_stack_lvl+0x188/0x250 [ 144.460615][ T5870] ? show_regs_print_info+0x20/0x20 [ 144.465796][ T5870] ? load_image+0x410/0x410 [ 144.470315][ T5870] ? __lock_acquire+0x7b50/0x7b50 [ 144.475329][ T5870] should_fail+0x383/0x4b0 [ 144.479737][ T5870] _copy_from_user+0x2e/0x170 [ 144.484402][ T5870] kstrtouint_from_user+0xd3/0x220 [ 144.489527][ T5870] ? kstrtol_from_user+0x2a0/0x2a0 [ 144.494639][ T5870] proc_fail_nth_write+0x8b/0x200 [ 144.499651][ T5870] ? proc_fail_nth_read+0x220/0x220 [ 144.504834][ T5870] ? common_file_perm+0x171/0x1c0 [ 144.509862][ T5870] ? proc_fail_nth_read+0x220/0x220 [ 144.515044][ T5870] vfs_write+0x304/0xd70 [ 144.519291][ T5870] ? file_end_write+0x250/0x250 [ 144.524137][ T5870] ? mutex_lock_nested+0x17/0x20 [ 144.529058][ T5870] ? __fdget_pos+0x2bf/0x370 [ 144.533629][ T5870] ? ksys_write+0x70/0x260 [ 144.538032][ T5870] ksys_write+0x153/0x260 [ 144.542349][ T5870] ? __ia32_sys_read+0x80/0x80 [ 144.547102][ T5870] ? lockdep_hardirqs_on+0x94/0x140 [ 144.552374][ T5870] do_syscall_64+0x4c/0xa0 [ 144.556772][ T5870] ? clear_bhb_loop+0x30/0x80 [ 144.561435][ T5870] ? clear_bhb_loop+0x30/0x80 [ 144.566108][ T5870] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 144.572160][ T5870] RIP: 0033:0x7f496b98e74e [ 144.576646][ T5870] 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 [ 144.596320][ T5870] RSP: 002b:00007f496ac28ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 144.604982][ T5870] RAX: ffffffffffffffda RBX: 00007f496ac296c0 RCX: 00007f496b98e74e [ 144.612938][ T5870] RDX: 0000000000000001 RSI: 00007f496ac290b0 RDI: 0000000000000005 [ 144.621074][ T5870] RBP: 00007f496ac290a0 R08: 0000000000000000 R09: 0000000000000000 [ 144.629036][ T5870] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 144.636989][ T5870] R13: 000000000000006e R14: 00007f496bb72058 R15: 00007ffc8ba6e9a8 [ 144.644956][ T5870] [ 144.747625][ T5879] FAULT_INJECTION: forcing a failure. [ 144.747625][ T5879] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 144.773121][ T5891] FAULT_INJECTION: forcing a failure. [ 144.773121][ T5891] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 144.791430][ T5879] CPU: 1 PID: 5879 Comm: syz.4.229 Not tainted syzkaller #0 [ 144.798760][ T5879] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 144.808814][ T5879] Call Trace: [ 144.811145][ T5889] FAULT_INJECTION: forcing a failure. [ 144.811145][ T5889] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 144.812189][ T5879] [ 144.828112][ T5879] dump_stack_lvl+0x188/0x250 [ 144.832886][ T5879] ? show_regs_print_info+0x20/0x20 [ 144.838100][ T5879] ? load_image+0x410/0x410 [ 144.842609][ T5879] ? __lock_acquire+0x7b50/0x7b50 [ 144.847644][ T5879] should_fail+0x383/0x4b0 [ 144.852151][ T5879] _copy_from_user+0x2e/0x170 [ 144.856823][ T5879] kstrtouint_from_user+0xd3/0x220 [ 144.861924][ T5879] ? kstrtol_from_user+0x2a0/0x2a0 [ 144.867043][ T5879] proc_fail_nth_write+0x8b/0x200 [ 144.872255][ T5879] ? proc_fail_nth_read+0x220/0x220 [ 144.877487][ T5879] ? common_file_perm+0x171/0x1c0 [ 144.882679][ T5879] ? proc_fail_nth_read+0x220/0x220 [ 144.887861][ T5879] vfs_write+0x304/0xd70 [ 144.892097][ T5879] ? file_end_write+0x250/0x250 [ 144.896938][ T5879] ? mutex_lock_nested+0x17/0x20 [ 144.901862][ T5879] ? __fdget_pos+0x2bf/0x370 [ 144.906434][ T5879] ? ksys_write+0x70/0x260 [ 144.910845][ T5879] ksys_write+0x153/0x260 [ 144.915162][ T5879] ? __ia32_sys_read+0x80/0x80 [ 144.919932][ T5879] ? lockdep_hardirqs_on+0x94/0x140 [ 144.925115][ T5879] do_syscall_64+0x4c/0xa0 [ 144.929514][ T5879] ? clear_bhb_loop+0x30/0x80 [ 144.934263][ T5879] ? clear_bhb_loop+0x30/0x80 [ 144.938922][ T5879] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 144.944797][ T5879] RIP: 0033:0x7f8c3f13c74e [ 144.949219][ T5879] 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 [ 144.968835][ T5879] RSP: 002b:00007f8c3e3f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 144.977357][ T5879] RAX: ffffffffffffffda RBX: 00007f8c3e3f86c0 RCX: 00007f8c3f13c74e [ 144.985593][ T5879] RDX: 0000000000000001 RSI: 00007f8c3e3f80b0 RDI: 0000000000000006 [ 144.993558][ T5879] RBP: 00007f8c3e3f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 145.001526][ T5879] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 145.009506][ T5879] R13: 000000000000000b R14: 00007f8c3f31ff80 R15: 00007ffc85ff7248 [ 145.017478][ T5879] [ 145.021819][ T5891] CPU: 1 PID: 5891 Comm: syz.1.230 Not tainted syzkaller #0 [ 145.029128][ T5891] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 145.039184][ T5891] Call Trace: [ 145.042487][ T5891] [ 145.045421][ T5891] dump_stack_lvl+0x188/0x250 [ 145.050110][ T5891] ? show_regs_print_info+0x20/0x20 [ 145.055308][ T5891] ? load_image+0x410/0x410 [ 145.059809][ T5891] ? __lock_acquire+0x7b50/0x7b50 [ 145.064837][ T5891] should_fail+0x383/0x4b0 [ 145.069259][ T5891] _copy_from_user+0x2e/0x170 [ 145.073945][ T5891] kstrtouint_from_user+0xd3/0x220 [ 145.079051][ T5891] ? kstrtol_from_user+0x2a0/0x2a0 [ 145.081262][ T5893] FAULT_INJECTION: forcing a failure. [ 145.081262][ T5893] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 145.084169][ T5891] proc_fail_nth_write+0x8b/0x200 [ 145.102207][ T5891] ? proc_fail_nth_read+0x220/0x220 [ 145.107413][ T5891] ? common_file_perm+0x171/0x1c0 [ 145.112465][ T5891] ? proc_fail_nth_read+0x220/0x220 [ 145.117658][ T5891] vfs_write+0x304/0xd70 [ 145.121903][ T5891] ? file_end_write+0x250/0x250 [ 145.126763][ T5891] ? mutex_lock_nested+0x17/0x20 [ 145.131709][ T5891] ? __fdget_pos+0x2bf/0x370 [ 145.136297][ T5891] ? ksys_write+0x70/0x260 [ 145.140709][ T5891] ksys_write+0x153/0x260 [ 145.145033][ T5891] ? __ia32_sys_read+0x80/0x80 [ 145.149796][ T5891] ? lockdep_hardirqs_on+0x94/0x140 [ 145.155004][ T5891] do_syscall_64+0x4c/0xa0 [ 145.159414][ T5891] ? clear_bhb_loop+0x30/0x80 [ 145.164265][ T5891] ? clear_bhb_loop+0x30/0x80 [ 145.168937][ T5891] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 145.174825][ T5891] RIP: 0033:0x7f3258da874e [ 145.179238][ T5891] 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 [ 145.199281][ T5891] RSP: 002b:00007f3258042ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 145.207693][ T5891] RAX: ffffffffffffffda RBX: 00007f32580436c0 RCX: 00007f3258da874e [ 145.215747][ T5891] RDX: 0000000000000001 RSI: 00007f32580430b0 RDI: 0000000000000005 [ 145.223723][ T5891] RBP: 00007f32580430a0 R08: 0000000000000000 R09: 0000000000000000 [ 145.231707][ T5891] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 145.239681][ T5891] R13: 000000000000006e R14: 00007f3258f8c058 R15: 00007ffdf34c27f8 [ 145.247671][ T5891] [ 145.251404][ T5893] CPU: 0 PID: 5893 Comm: syz.0.232 Not tainted syzkaller #0 [ 145.258798][ T5893] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 145.268948][ T5893] Call Trace: [ 145.272238][ T5893] [ 145.275179][ T5893] dump_stack_lvl+0x188/0x250 [ 145.279881][ T5893] ? show_regs_print_info+0x20/0x20 [ 145.285091][ T5893] ? load_image+0x410/0x410 [ 145.289594][ T5893] ? __lock_acquire+0x7b50/0x7b50 [ 145.294610][ T5893] should_fail+0x383/0x4b0 [ 145.299017][ T5893] _copy_from_user+0x2e/0x170 [ 145.303687][ T5893] kstrtouint_from_user+0xd3/0x220 [ 145.308788][ T5893] ? kstrtol_from_user+0x2a0/0x2a0 [ 145.313898][ T5893] proc_fail_nth_write+0x8b/0x200 [ 145.318910][ T5893] ? proc_fail_nth_read+0x220/0x220 [ 145.324097][ T5893] ? common_file_perm+0x171/0x1c0 [ 145.329108][ T5893] ? proc_fail_nth_read+0x220/0x220 [ 145.334292][ T5893] vfs_write+0x304/0xd70 [ 145.338528][ T5893] ? file_end_write+0x250/0x250 [ 145.343383][ T5893] ? mutex_lock_nested+0x17/0x20 [ 145.348395][ T5893] ? __fdget_pos+0x2bf/0x370 [ 145.352996][ T5893] ? ksys_write+0x70/0x260 [ 145.357447][ T5893] ksys_write+0x153/0x260 [ 145.361800][ T5893] ? __ia32_sys_read+0x80/0x80 [ 145.366572][ T5893] ? lockdep_hardirqs_on+0x94/0x140 [ 145.371770][ T5893] do_syscall_64+0x4c/0xa0 [ 145.376171][ T5893] ? clear_bhb_loop+0x30/0x80 [ 145.380831][ T5893] ? clear_bhb_loop+0x30/0x80 [ 145.385496][ T5893] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 145.391376][ T5893] RIP: 0033:0x7f0a25ce074e [ 145.395780][ T5893] 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 [ 145.415394][ T5893] RSP: 002b:00007f0a24f7aff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 145.423825][ T5893] RAX: ffffffffffffffda RBX: 00007f0a24f7b6c0 RCX: 00007f0a25ce074e [ 145.431782][ T5893] RDX: 0000000000000001 RSI: 00007f0a24f7b0b0 RDI: 0000000000000005 [ 145.439737][ T5893] RBP: 00007f0a24f7b0a0 R08: 0000000000000000 R09: 0000000000000000 [ 145.447715][ T5893] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 145.455670][ T5893] R13: 000000000000006e R14: 00007f0a25ec4058 R15: 00007fff8b3f2f08 [ 145.463653][ T5893] [ 145.492194][ T5889] CPU: 0 PID: 5889 Comm: syz.2.231 Not tainted syzkaller #0 [ 145.499529][ T5889] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 145.509595][ T5889] Call Trace: [ 145.512977][ T5889] [ 145.515915][ T5889] dump_stack_lvl+0x188/0x250 [ 145.520613][ T5889] ? show_regs_print_info+0x20/0x20 [ 145.525826][ T5889] ? load_image+0x410/0x410 [ 145.530352][ T5889] ? __lock_acquire+0x7b50/0x7b50 [ 145.535420][ T5889] should_fail+0x383/0x4b0 [ 145.539860][ T5889] _copy_from_user+0x2e/0x170 [ 145.544616][ T5889] kstrtouint_from_user+0xd3/0x220 [ 145.549741][ T5889] ? kstrtol_from_user+0x2a0/0x2a0 [ 145.554973][ T5889] proc_fail_nth_write+0x8b/0x200 [ 145.560078][ T5889] ? proc_fail_nth_read+0x220/0x220 [ 145.565261][ T5889] ? common_file_perm+0x171/0x1c0 [ 145.570275][ T5889] ? proc_fail_nth_read+0x220/0x220 [ 145.575457][ T5889] vfs_write+0x304/0xd70 [ 145.579693][ T5889] ? file_end_write+0x250/0x250 [ 145.584554][ T5889] ? mutex_lock_nested+0x17/0x20 [ 145.589483][ T5889] ? __fdget_pos+0x2bf/0x370 [ 145.594055][ T5889] ? ksys_write+0x70/0x260 [ 145.598718][ T5889] ksys_write+0x153/0x260 [ 145.603212][ T5889] ? __ia32_sys_read+0x80/0x80 [ 145.607960][ T5889] ? lockdep_hardirqs_on+0x94/0x140 [ 145.613141][ T5889] do_syscall_64+0x4c/0xa0 [ 145.617544][ T5889] ? clear_bhb_loop+0x30/0x80 [ 145.622297][ T5889] ? clear_bhb_loop+0x30/0x80 [ 145.626958][ T5889] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 145.632831][ T5889] RIP: 0033:0x7f43fb03c74e [ 145.637232][ T5889] 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 [ 145.656842][ T5889] RSP: 002b:00007f43fa2f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 145.665336][ T5889] RAX: ffffffffffffffda RBX: 00007f43fa2f86c0 RCX: 00007f43fb03c74e [ 145.673297][ T5889] RDX: 0000000000000001 RSI: 00007f43fa2f80b0 RDI: 0000000000000007 [ 145.681255][ T5889] RBP: 00007f43fa2f80a0 R08: 0000000000000000 R09: 0000000000000000 2026/07/19 10:40:17 executed programs: 229 [ 145.689235][ T5889] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 145.697189][ T5889] R13: 000000000000000b R14: 00007f43fb21ff80 R15: 00007fffb4f5ab98 [ 145.705159][ T5889] [ 145.735248][ T5900] FAULT_INJECTION: forcing a failure. [ 145.735248][ T5900] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 145.766660][ T5902] FAULT_INJECTION: forcing a failure. [ 145.766660][ T5902] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 145.790797][ T5904] FAULT_INJECTION: forcing a failure. [ 145.790797][ T5904] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 145.810619][ T5902] CPU: 0 PID: 5902 Comm: syz.3.233 Not tainted syzkaller #0 [ 145.817945][ T5902] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 145.828022][ T5902] Call Trace: [ 145.831301][ T5902] [ 145.834250][ T5902] dump_stack_lvl+0x188/0x250 [ 145.838944][ T5902] ? show_regs_print_info+0x20/0x20 [ 145.844157][ T5902] ? load_image+0x410/0x410 [ 145.848685][ T5902] ? __lock_acquire+0x7b50/0x7b50 [ 145.853743][ T5902] should_fail+0x383/0x4b0 [ 145.858182][ T5902] _copy_from_user+0x2e/0x170 [ 145.862865][ T5902] kstrtouint_from_user+0xd3/0x220 [ 145.868136][ T5902] ? kstrtol_from_user+0x2a0/0x2a0 [ 145.873278][ T5902] proc_fail_nth_write+0x8b/0x200 [ 145.878317][ T5902] ? proc_fail_nth_read+0x220/0x220 [ 145.883528][ T5902] ? common_file_perm+0x171/0x1c0 [ 145.888653][ T5902] ? proc_fail_nth_read+0x220/0x220 [ 145.893864][ T5902] vfs_write+0x304/0xd70 [ 145.898126][ T5902] ? file_end_write+0x250/0x250 [ 145.903005][ T5902] ? mutex_lock_nested+0x17/0x20 [ 145.907952][ T5902] ? __fdget_pos+0x2bf/0x370 [ 145.912554][ T5902] ? ksys_write+0x70/0x260 [ 145.916974][ T5902] ksys_write+0x153/0x260 [ 145.921325][ T5902] ? __ia32_sys_read+0x80/0x80 [ 145.926092][ T5902] ? lockdep_hardirqs_on+0x94/0x140 [ 145.931394][ T5902] do_syscall_64+0x4c/0xa0 [ 145.935814][ T5902] ? clear_bhb_loop+0x30/0x80 [ 145.940498][ T5902] ? clear_bhb_loop+0x30/0x80 [ 145.945199][ T5902] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 145.951186][ T5902] RIP: 0033:0x7f496b98e74e [ 145.955618][ T5902] 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 [ 145.975230][ T5902] RSP: 002b:00007f496ac49ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 145.983640][ T5902] RAX: ffffffffffffffda RBX: 00007f496ac4a6c0 RCX: 00007f496b98e74e [ 145.991603][ T5902] RDX: 0000000000000001 RSI: 00007f496ac4a0b0 RDI: 0000000000000007 [ 145.999561][ T5902] RBP: 00007f496ac4a0a0 R08: 0000000000000000 R09: 0000000000000000 [ 146.007602][ T5902] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 146.015554][ T5902] R13: 000000000000000b R14: 00007f496bb71f80 R15: 00007ffc8ba6e9a8 [ 146.023528][ T5902] [ 146.029008][ T5900] CPU: 0 PID: 5900 Comm: syz.4.234 Not tainted syzkaller #0 [ 146.036314][ T5900] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 146.046387][ T5900] Call Trace: [ 146.049676][ T5900] [ 146.052615][ T5900] dump_stack_lvl+0x188/0x250 [ 146.057301][ T5900] ? show_regs_print_info+0x20/0x20 [ 146.062516][ T5900] ? load_image+0x410/0x410 [ 146.067032][ T5900] ? __lock_acquire+0x7b50/0x7b50 [ 146.072060][ T5900] should_fail+0x383/0x4b0 [ 146.076477][ T5900] _copy_from_user+0x2e/0x170 [ 146.081144][ T5900] kstrtouint_from_user+0xd3/0x220 [ 146.086253][ T5900] ? kstrtol_from_user+0x2a0/0x2a0 [ 146.091357][ T5900] proc_fail_nth_write+0x8b/0x200 [ 146.096370][ T5900] ? proc_fail_nth_read+0x220/0x220 [ 146.101566][ T5900] ? common_file_perm+0x171/0x1c0 [ 146.106582][ T5900] ? proc_fail_nth_read+0x220/0x220 [ 146.111763][ T5900] vfs_write+0x304/0xd70 [ 146.116001][ T5900] ? file_end_write+0x250/0x250 [ 146.120848][ T5900] ? mutex_lock_nested+0x17/0x20 [ 146.125864][ T5900] ? __fdget_pos+0x2bf/0x370 [ 146.130525][ T5900] ? ksys_write+0x70/0x260 [ 146.134923][ T5900] ksys_write+0x153/0x260 [ 146.139250][ T5900] ? __ia32_sys_read+0x80/0x80 [ 146.144096][ T5900] ? lockdep_hardirqs_on+0x94/0x140 [ 146.149288][ T5900] do_syscall_64+0x4c/0xa0 [ 146.153696][ T5900] ? clear_bhb_loop+0x30/0x80 [ 146.158367][ T5900] ? clear_bhb_loop+0x30/0x80 [ 146.163048][ T5900] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 146.168923][ T5900] RIP: 0033:0x7f8c3f13c74e [ 146.173501][ T5900] 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 [ 146.193176][ T5900] RSP: 002b:00007f8c3e3f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 146.201757][ T5900] RAX: ffffffffffffffda RBX: 00007f8c3e3f86c0 RCX: 00007f8c3f13c74e [ 146.209715][ T5900] RDX: 0000000000000001 RSI: 00007f8c3e3f80b0 RDI: 0000000000000007 [ 146.217668][ T5900] RBP: 00007f8c3e3f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 146.225710][ T5900] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 146.233839][ T5900] R13: 000000000000000b R14: 00007f8c3f31ff80 R15: 00007ffc85ff7248 [ 146.241807][ T5900] [ 146.248938][ T5909] FAULT_INJECTION: forcing a failure. [ 146.248938][ T5909] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 146.262230][ T5904] CPU: 1 PID: 5904 Comm: syz.1.236 Not tainted syzkaller #0 [ 146.269537][ T5904] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 146.279602][ T5904] Call Trace: [ 146.283067][ T5904] [ 146.286182][ T5904] dump_stack_lvl+0x188/0x250 [ 146.290887][ T5904] ? show_regs_print_info+0x20/0x20 [ 146.296099][ T5904] ? load_image+0x410/0x410 [ 146.300620][ T5904] ? __lock_acquire+0x7b50/0x7b50 [ 146.305667][ T5904] should_fail+0x383/0x4b0 [ 146.310109][ T5904] _copy_from_user+0x2e/0x170 [ 146.314805][ T5904] kstrtouint_from_user+0xd3/0x220 [ 146.319932][ T5904] ? kstrtol_from_user+0x2a0/0x2a0 [ 146.325169][ T5904] proc_fail_nth_write+0x8b/0x200 [ 146.330210][ T5904] ? proc_fail_nth_read+0x220/0x220 [ 146.335422][ T5904] ? common_file_perm+0x171/0x1c0 [ 146.340477][ T5904] ? proc_fail_nth_read+0x220/0x220 [ 146.345690][ T5904] vfs_write+0x304/0xd70 [ 146.349953][ T5904] ? file_end_write+0x250/0x250 [ 146.354832][ T5904] ? mutex_lock_nested+0x17/0x20 [ 146.359786][ T5904] ? __fdget_pos+0x2bf/0x370 [ 146.364384][ T5904] ? ksys_write+0x70/0x260 [ 146.368808][ T5904] ksys_write+0x153/0x260 [ 146.373140][ T5904] ? __ia32_sys_read+0x80/0x80 [ 146.377901][ T5904] ? lockdep_hardirqs_on+0x94/0x140 [ 146.383100][ T5904] do_syscall_64+0x4c/0xa0 [ 146.387507][ T5904] ? clear_bhb_loop+0x30/0x80 [ 146.392014][ T5919] FAULT_INJECTION: forcing a failure. [ 146.392014][ T5919] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 146.392270][ T5904] ? clear_bhb_loop+0x30/0x80 [ 146.410017][ T5904] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 146.412091][ T5920] FAULT_INJECTION: forcing a failure. [ 146.412091][ T5920] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 146.416172][ T5904] RIP: 0033:0x7f3258da874e [ 146.416191][ T5904] 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 [ 146.416205][ T5904] RSP: 002b:00007f3258063ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 146.416224][ T5904] RAX: ffffffffffffffda RBX: 00007f32580646c0 RCX: 00007f3258da874e [ 146.416236][ T5904] RDX: 0000000000000001 RSI: 00007f32580640b0 RDI: 0000000000000007 [ 146.416247][ T5904] RBP: 00007f32580640a0 R08: 0000000000000000 R09: 0000000000000000 [ 146.416257][ T5904] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 146.416267][ T5904] R13: 000000000000000b R14: 00007f3258f8bf80 R15: 00007ffdf34c27f8 [ 146.501770][ T5904] [ 146.504797][ T5909] CPU: 0 PID: 5909 Comm: syz.0.235 Not tainted syzkaller #0 [ 146.512173][ T5909] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 146.522232][ T5909] Call Trace: [ 146.525505][ T5909] [ 146.528511][ T5909] dump_stack_lvl+0x188/0x250 [ 146.533264][ T5909] ? show_regs_print_info+0x20/0x20 [ 146.538447][ T5909] ? load_image+0x410/0x410 [ 146.542935][ T5909] ? __lock_acquire+0x7b50/0x7b50 [ 146.548036][ T5909] should_fail+0x383/0x4b0 [ 146.552547][ T5909] _copy_from_user+0x2e/0x170 [ 146.557211][ T5909] kstrtouint_from_user+0xd3/0x220 [ 146.562307][ T5909] ? kstrtol_from_user+0x2a0/0x2a0 [ 146.567415][ T5909] proc_fail_nth_write+0x8b/0x200 [ 146.572440][ T5909] ? proc_fail_nth_read+0x220/0x220 [ 146.577618][ T5909] ? common_file_perm+0x171/0x1c0 [ 146.582639][ T5909] ? proc_fail_nth_read+0x220/0x220 [ 146.587824][ T5909] vfs_write+0x304/0xd70 [ 146.592061][ T5909] ? file_end_write+0x250/0x250 [ 146.596903][ T5909] ? mutex_lock_nested+0x17/0x20 [ 146.601829][ T5909] ? __fdget_pos+0x2bf/0x370 [ 146.606408][ T5909] ? ksys_write+0x70/0x260 [ 146.610811][ T5909] ksys_write+0x153/0x260 [ 146.615122][ T5909] ? __ia32_sys_read+0x80/0x80 [ 146.619871][ T5909] ? lockdep_hardirqs_on+0x94/0x140 [ 146.625056][ T5909] do_syscall_64+0x4c/0xa0 [ 146.629450][ T5909] ? clear_bhb_loop+0x30/0x80 [ 146.634117][ T5909] ? clear_bhb_loop+0x30/0x80 [ 146.638805][ T5909] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 146.644702][ T5909] RIP: 0033:0x7f0a25ce074e [ 146.649194][ T5909] 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 [ 146.668993][ T5909] RSP: 002b:00007f0a24f7aff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 146.677404][ T5909] RAX: ffffffffffffffda RBX: 00007f0a24f7b6c0 RCX: 00007f0a25ce074e [ 146.685363][ T5909] RDX: 0000000000000001 RSI: 00007f0a24f7b0b0 RDI: 0000000000000004 [ 146.693319][ T5909] RBP: 00007f0a24f7b0a0 R08: 0000000000000000 R09: 0000000000000000 [ 146.701296][ T5909] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 146.709270][ T5909] R13: 000000000000006e R14: 00007f0a25ec4058 R15: 00007fff8b3f2f08 [ 146.717263][ T5909] [ 146.726380][ T5920] CPU: 1 PID: 5920 Comm: syz.4.238 Not tainted syzkaller #0 [ 146.733708][ T5920] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 146.743778][ T5920] Call Trace: [ 146.747175][ T5920] [ 146.750114][ T5920] dump_stack_lvl+0x188/0x250 [ 146.754809][ T5920] ? show_regs_print_info+0x20/0x20 [ 146.760024][ T5920] ? load_image+0x410/0x410 [ 146.764555][ T5920] ? __lock_acquire+0x7b50/0x7b50 [ 146.769599][ T5920] should_fail+0x383/0x4b0 [ 146.774031][ T5920] _copy_from_user+0x2e/0x170 [ 146.778728][ T5920] kstrtouint_from_user+0xd3/0x220 [ 146.783942][ T5920] ? kstrtol_from_user+0x2a0/0x2a0 [ 146.789076][ T5920] proc_fail_nth_write+0x8b/0x200 [ 146.794212][ T5920] ? proc_fail_nth_read+0x220/0x220 [ 146.799410][ T5920] ? common_file_perm+0x171/0x1c0 [ 146.804440][ T5920] ? proc_fail_nth_read+0x220/0x220 [ 146.809638][ T5920] vfs_write+0x304/0xd70 [ 146.813894][ T5920] ? file_end_write+0x250/0x250 [ 146.818767][ T5920] ? mutex_lock_nested+0x17/0x20 [ 146.823709][ T5920] ? __fdget_pos+0x2bf/0x370 [ 146.828389][ T5920] ? ksys_write+0x70/0x260 [ 146.832981][ T5920] ksys_write+0x153/0x260 [ 146.837402][ T5920] ? __ia32_sys_read+0x80/0x80 [ 146.842176][ T5920] ? lockdep_hardirqs_on+0x94/0x140 [ 146.847458][ T5920] do_syscall_64+0x4c/0xa0 [ 146.851872][ T5920] ? clear_bhb_loop+0x30/0x80 [ 146.856745][ T5920] ? clear_bhb_loop+0x30/0x80 [ 146.861438][ T5920] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 146.867362][ T5920] RIP: 0033:0x7f8c3f13c74e [ 146.871789][ T5920] 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 [ 146.891541][ T5920] RSP: 002b:00007f8c3e3d6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 146.899959][ T5920] RAX: ffffffffffffffda RBX: 00007f8c3e3d76c0 RCX: 00007f8c3f13c74e [ 146.907932][ T5920] RDX: 0000000000000001 RSI: 00007f8c3e3d70b0 RDI: 0000000000000005 [ 146.915994][ T5920] RBP: 00007f8c3e3d70a0 R08: 0000000000000000 R09: 0000000000000000 [ 146.923973][ T5920] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 146.932026][ T5920] R13: 000000000000006e R14: 00007f8c3f320058 R15: 00007ffc85ff7248 [ 146.940010][ T5920] [ 146.943033][ T5919] CPU: 0 PID: 5919 Comm: syz.2.237 Not tainted syzkaller #0 [ 146.950328][ T5919] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 146.960393][ T5919] Call Trace: [ 146.963682][ T5919] [ 146.966629][ T5919] dump_stack_lvl+0x188/0x250 [ 146.971304][ T5919] ? show_regs_print_info+0x20/0x20 [ 146.976488][ T5919] ? load_image+0x410/0x410 [ 146.980979][ T5919] ? __lock_acquire+0x7b50/0x7b50 [ 146.986008][ T5919] should_fail+0x383/0x4b0 [ 146.990436][ T5919] _copy_from_user+0x2e/0x170 [ 146.995211][ T5919] kstrtouint_from_user+0xd3/0x220 [ 147.000326][ T5919] ? kstrtol_from_user+0x2a0/0x2a0 [ 147.005443][ T5919] proc_fail_nth_write+0x8b/0x200 [ 147.010462][ T5919] ? proc_fail_nth_read+0x220/0x220 [ 147.015659][ T5919] ? common_file_perm+0x171/0x1c0 [ 147.020784][ T5919] ? proc_fail_nth_read+0x220/0x220 [ 147.025981][ T5919] vfs_write+0x304/0xd70 [ 147.030223][ T5919] ? file_end_write+0x250/0x250 [ 147.035065][ T5919] ? mutex_lock_nested+0x17/0x20 [ 147.039985][ T5919] ? __fdget_pos+0x2bf/0x370 [ 147.044566][ T5919] ? ksys_write+0x70/0x260 [ 147.048967][ T5919] ksys_write+0x153/0x260 [ 147.053401][ T5919] ? __ia32_sys_read+0x80/0x80 [ 147.058155][ T5919] ? lockdep_hardirqs_on+0x94/0x140 [ 147.063341][ T5919] do_syscall_64+0x4c/0xa0 [ 147.067738][ T5919] ? clear_bhb_loop+0x30/0x80 [ 147.072396][ T5919] ? clear_bhb_loop+0x30/0x80 [ 147.077053][ T5919] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 147.082938][ T5919] RIP: 0033:0x7f43fb03c74e [ 147.087428][ T5919] 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 [ 147.107015][ T5919] RSP: 002b:00007f43fa2d6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 147.115412][ T5919] RAX: ffffffffffffffda RBX: 00007f43fa2d76c0 RCX: 00007f43fb03c74e [ 147.123368][ T5919] RDX: 0000000000000001 RSI: 00007f43fa2d70b0 RDI: 0000000000000005 [ 147.131319][ T5919] RBP: 00007f43fa2d70a0 R08: 0000000000000000 R09: 0000000000000000 [ 147.139280][ T5919] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 147.147233][ T5919] R13: 000000000000006e R14: 00007f43fb220058 R15: 00007fffb4f5ab98 [ 147.155201][ T5919] [ 147.236968][ T5928] FAULT_INJECTION: forcing a failure. [ 147.236968][ T5928] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 147.251212][ T5930] FAULT_INJECTION: forcing a failure. [ 147.251212][ T5930] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 147.251212][ T5934] FAULT_INJECTION: forcing a failure. [ 147.251212][ T5934] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 147.251242][ T5934] CPU: 1 PID: 5934 Comm: syz.2.242 Not tainted syzkaller #0 [ 147.284696][ T5934] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 147.294751][ T5934] Call Trace: [ 147.298033][ T5934] [ 147.301010][ T5934] dump_stack_lvl+0x188/0x250 [ 147.305785][ T5934] ? show_regs_print_info+0x20/0x20 [ 147.311083][ T5934] ? load_image+0x410/0x410 [ 147.315592][ T5934] ? __lock_acquire+0x7b50/0x7b50 [ 147.320621][ T5934] should_fail+0x383/0x4b0 [ 147.325034][ T5934] _copy_from_user+0x2e/0x170 [ 147.329712][ T5934] kstrtouint_from_user+0xd3/0x220 [ 147.330018][ T5933] FAULT_INJECTION: forcing a failure. [ 147.330018][ T5933] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 147.334831][ T5934] ? kstrtol_from_user+0x2a0/0x2a0 [ 147.349011][ T5924] FAULT_INJECTION: forcing a failure. [ 147.349011][ T5924] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 147.353129][ T5934] proc_fail_nth_write+0x8b/0x200 [ 147.371385][ T5934] ? proc_fail_nth_read+0x220/0x220 [ 147.376595][ T5934] ? common_file_perm+0x171/0x1c0 [ 147.381624][ T5934] ? proc_fail_nth_read+0x220/0x220 [ 147.386820][ T5934] vfs_write+0x304/0xd70 [ 147.391059][ T5934] ? file_end_write+0x250/0x250 [ 147.396005][ T5934] ? mutex_lock_nested+0x17/0x20 [ 147.400986][ T5934] ? __fdget_pos+0x2bf/0x370 [ 147.405584][ T5934] ? ksys_write+0x70/0x260 [ 147.409995][ T5934] ksys_write+0x153/0x260 [ 147.414410][ T5934] ? __ia32_sys_read+0x80/0x80 [ 147.419166][ T5934] ? lockdep_hardirqs_on+0x94/0x140 [ 147.424359][ T5934] do_syscall_64+0x4c/0xa0 [ 147.428769][ T5934] ? clear_bhb_loop+0x30/0x80 [ 147.433437][ T5934] ? clear_bhb_loop+0x30/0x80 [ 147.438200][ T5934] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 147.444082][ T5934] RIP: 0033:0x7f43fb03c74e [ 147.448492][ T5934] 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 [ 147.468100][ T5934] RSP: 002b:00007f43fa2f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 147.476513][ T5934] RAX: ffffffffffffffda RBX: 00007f43fa2f86c0 RCX: 00007f43fb03c74e [ 147.484480][ T5934] RDX: 0000000000000001 RSI: 00007f43fa2f80b0 RDI: 0000000000000007 [ 147.492463][ T5934] RBP: 00007f43fa2f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 147.500431][ T5934] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 147.508487][ T5934] R13: 000000000000000b R14: 00007f43fb21ff80 R15: 00007fffb4f5ab98 [ 147.516473][ T5934] [ 147.519501][ T5928] CPU: 0 PID: 5928 Comm: syz.1.240 Not tainted syzkaller #0 [ 147.526885][ T5928] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 147.536949][ T5928] Call Trace: [ 147.540235][ T5928] [ 147.543172][ T5928] dump_stack_lvl+0x188/0x250 [ 147.547870][ T5928] ? show_regs_print_info+0x20/0x20 [ 147.553270][ T5928] ? load_image+0x410/0x410 [ 147.557799][ T5928] ? __lock_acquire+0x7b50/0x7b50 [ 147.562848][ T5928] should_fail+0x383/0x4b0 [ 147.567286][ T5928] _copy_from_user+0x2e/0x170 [ 147.571983][ T5928] kstrtouint_from_user+0xd3/0x220 [ 147.577115][ T5928] ? kstrtol_from_user+0x2a0/0x2a0 [ 147.582364][ T5928] proc_fail_nth_write+0x8b/0x200 [ 147.587405][ T5928] ? proc_fail_nth_read+0x220/0x220 [ 147.592625][ T5928] ? common_file_perm+0x171/0x1c0 [ 147.597665][ T5928] ? proc_fail_nth_read+0x220/0x220 [ 147.602879][ T5928] vfs_write+0x304/0xd70 [ 147.607145][ T5928] ? file_end_write+0x250/0x250 [ 147.612029][ T5928] ? mutex_lock_nested+0x17/0x20 [ 147.616981][ T5928] ? __fdget_pos+0x2bf/0x370 [ 147.621578][ T5928] ? ksys_write+0x70/0x260 [ 147.626002][ T5928] ksys_write+0x153/0x260 [ 147.630338][ T5928] ? __ia32_sys_read+0x80/0x80 [ 147.635093][ T5928] ? lockdep_hardirqs_on+0x94/0x140 [ 147.640286][ T5928] do_syscall_64+0x4c/0xa0 [ 147.644699][ T5928] ? clear_bhb_loop+0x30/0x80 [ 147.649371][ T5928] ? clear_bhb_loop+0x30/0x80 [ 147.654058][ T5928] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 147.659964][ T5928] RIP: 0033:0x7f3258da874e [ 147.664477][ T5928] 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 [ 147.684177][ T5928] RSP: 002b:00007f3258063ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 147.692602][ T5928] RAX: ffffffffffffffda RBX: 00007f32580646c0 RCX: 00007f3258da874e [ 147.700588][ T5928] RDX: 0000000000000001 RSI: 00007f32580640b0 RDI: 0000000000000007 [ 147.708568][ T5928] RBP: 00007f32580640a0 R08: 0000000000000000 R09: 0000000000000000 [ 147.716545][ T5928] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 147.724604][ T5928] R13: 000000000000000b R14: 00007f3258f8bf80 R15: 00007ffdf34c27f8 [ 147.732596][ T5928] [ 147.735610][ T5933] CPU: 1 PID: 5933 Comm: syz.4.243 Not tainted syzkaller #0 [ 147.742988][ T5933] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 147.753035][ T5933] Call Trace: [ 147.756304][ T5933] [ 147.759225][ T5933] dump_stack_lvl+0x188/0x250 [ 147.763893][ T5933] ? show_regs_print_info+0x20/0x20 [ 147.769079][ T5933] ? load_image+0x410/0x410 [ 147.773567][ T5933] ? __lock_acquire+0x7b50/0x7b50 [ 147.778754][ T5933] should_fail+0x383/0x4b0 [ 147.783162][ T5933] _copy_from_user+0x2e/0x170 [ 147.787847][ T5933] kstrtouint_from_user+0xd3/0x220 [ 147.792995][ T5933] ? kstrtol_from_user+0x2a0/0x2a0 [ 147.798113][ T5933] proc_fail_nth_write+0x8b/0x200 [ 147.803224][ T5933] ? proc_fail_nth_read+0x220/0x220 [ 147.808410][ T5933] ? common_file_perm+0x171/0x1c0 [ 147.813423][ T5933] ? proc_fail_nth_read+0x220/0x220 [ 147.818607][ T5933] vfs_write+0x304/0xd70 [ 147.822966][ T5933] ? file_end_write+0x250/0x250 [ 147.827813][ T5933] ? mutex_lock_nested+0x17/0x20 [ 147.832737][ T5933] ? __fdget_pos+0x2bf/0x370 [ 147.837309][ T5933] ? ksys_write+0x70/0x260 [ 147.841714][ T5933] ksys_write+0x153/0x260 [ 147.846030][ T5933] ? __ia32_sys_read+0x80/0x80 [ 147.850795][ T5933] ? lockdep_hardirqs_on+0x94/0x140 [ 147.856003][ T5933] do_syscall_64+0x4c/0xa0 [ 147.860412][ T5933] ? clear_bhb_loop+0x30/0x80 [ 147.865115][ T5933] ? clear_bhb_loop+0x30/0x80 [ 147.869788][ T5933] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 147.875763][ T5933] RIP: 0033:0x7f8c3f13c74e [ 147.880165][ T5933] 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 [ 147.899931][ T5933] RSP: 002b:00007f8c3e3f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 147.908436][ T5933] RAX: ffffffffffffffda RBX: 00007f8c3e3f86c0 RCX: 00007f8c3f13c74e [ 147.916392][ T5933] RDX: 0000000000000001 RSI: 00007f8c3e3f80b0 RDI: 0000000000000007 [ 147.924370][ T5933] RBP: 00007f8c3e3f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 147.932328][ T5933] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 147.940287][ T5933] R13: 000000000000000b R14: 00007f8c3f31ff80 R15: 00007ffc85ff7248 [ 147.948888][ T5933] [ 147.952716][ T5930] CPU: 1 PID: 5930 Comm: syz.3.241 Not tainted syzkaller #0 [ 147.960019][ T5930] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 147.970088][ T5930] Call Trace: [ 147.973473][ T5930] [ 147.976413][ T5930] dump_stack_lvl+0x188/0x250 [ 147.981111][ T5930] ? show_regs_print_info+0x20/0x20 [ 147.986343][ T5930] ? load_image+0x410/0x410 [ 147.990870][ T5930] ? __lock_acquire+0x7b50/0x7b50 [ 147.995996][ T5930] should_fail+0x383/0x4b0 [ 148.000411][ T5930] _copy_from_user+0x2e/0x170 [ 148.005085][ T5930] kstrtouint_from_user+0xd3/0x220 [ 148.010185][ T5930] ? kstrtol_from_user+0x2a0/0x2a0 [ 148.015301][ T5930] proc_fail_nth_write+0x8b/0x200 [ 148.020326][ T5930] ? proc_fail_nth_read+0x220/0x220 [ 148.025515][ T5930] ? common_file_perm+0x171/0x1c0 [ 148.030527][ T5930] ? proc_fail_nth_read+0x220/0x220 [ 148.035713][ T5930] vfs_write+0x304/0xd70 [ 148.039950][ T5930] ? file_end_write+0x250/0x250 [ 148.044892][ T5930] ? mutex_lock_nested+0x17/0x20 [ 148.049914][ T5930] ? __fdget_pos+0x2bf/0x370 [ 148.054487][ T5930] ? ksys_write+0x70/0x260 [ 148.058889][ T5930] ksys_write+0x153/0x260 [ 148.063200][ T5930] ? __ia32_sys_read+0x80/0x80 [ 148.067951][ T5930] ? lockdep_hardirqs_on+0x94/0x140 [ 148.073151][ T5930] do_syscall_64+0x4c/0xa0 [ 148.077563][ T5930] ? clear_bhb_loop+0x30/0x80 [ 148.082222][ T5930] ? clear_bhb_loop+0x30/0x80 [ 148.086888][ T5930] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 148.092938][ T5930] RIP: 0033:0x7f496b98e74e [ 148.097428][ T5930] 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 [ 148.117126][ T5930] RSP: 002b:00007f496ac49ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 148.125533][ T5930] RAX: ffffffffffffffda RBX: 00007f496ac4a6c0 RCX: 00007f496b98e74e [ 148.133664][ T5930] RDX: 0000000000000001 RSI: 00007f496ac4a0b0 RDI: 0000000000000007 [ 148.141620][ T5930] RBP: 00007f496ac4a0a0 R08: 0000000000000000 R09: 0000000000000000 [ 148.149672][ T5930] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 148.157624][ T5930] R13: 000000000000000b R14: 00007f496bb71f80 R15: 00007ffc8ba6e9a8 [ 148.165603][ T5930] [ 148.171739][ T5942] FAULT_INJECTION: forcing a failure. [ 148.171739][ T5942] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 148.192300][ T5924] CPU: 0 PID: 5924 Comm: syz.0.239 Not tainted syzkaller #0 [ 148.199631][ T5924] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 148.209704][ T5924] Call Trace: [ 148.212987][ T5924] [ 148.215914][ T5924] dump_stack_lvl+0x188/0x250 [ 148.220607][ T5924] ? show_regs_print_info+0x20/0x20 [ 148.225831][ T5924] ? load_image+0x410/0x410 [ 148.230441][ T5924] ? __lock_acquire+0x7b50/0x7b50 [ 148.235573][ T5924] should_fail+0x383/0x4b0 [ 148.240012][ T5924] _copy_from_user+0x2e/0x170 [ 148.244717][ T5924] kstrtouint_from_user+0xd3/0x220 [ 148.249842][ T5924] ? kstrtol_from_user+0x2a0/0x2a0 [ 148.254979][ T5924] proc_fail_nth_write+0x8b/0x200 [ 148.260026][ T5924] ? proc_fail_nth_read+0x220/0x220 [ 148.265321][ T5924] ? common_file_perm+0x171/0x1c0 [ 148.270361][ T5924] ? proc_fail_nth_read+0x220/0x220 [ 148.275568][ T5924] vfs_write+0x304/0xd70 [ 148.279835][ T5924] ? file_end_write+0x250/0x250 [ 148.284801][ T5924] ? mutex_lock_nested+0x17/0x20 [ 148.289749][ T5924] ? __fdget_pos+0x2bf/0x370 [ 148.294350][ T5924] ? ksys_write+0x70/0x260 [ 148.298860][ T5924] ksys_write+0x153/0x260 [ 148.303201][ T5924] ? __ia32_sys_read+0x80/0x80 [ 148.307978][ T5924] ? lockdep_hardirqs_on+0x94/0x140 [ 148.313281][ T5924] do_syscall_64+0x4c/0xa0 [ 148.317710][ T5924] ? clear_bhb_loop+0x30/0x80 [ 148.322398][ T5924] ? clear_bhb_loop+0x30/0x80 [ 148.327092][ T5924] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 148.332991][ T5924] RIP: 0033:0x7f0a25ce074e [ 148.337411][ T5924] 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 [ 148.357024][ T5924] RSP: 002b:00007f0a24f9bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 148.365450][ T5924] RAX: ffffffffffffffda RBX: 00007f0a24f9c6c0 RCX: 00007f0a25ce074e [ 148.373433][ T5924] RDX: 0000000000000001 RSI: 00007f0a24f9c0b0 RDI: 0000000000000007 [ 148.381413][ T5924] RBP: 00007f0a24f9c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 148.389392][ T5924] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 148.397368][ T5924] R13: 000000000000000b R14: 00007f0a25ec3f80 R15: 00007fff8b3f2f08 [ 148.405450][ T5924] [ 148.432653][ T5954] FAULT_INJECTION: forcing a failure. [ 148.432653][ T5954] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 148.434807][ T5942] CPU: 1 PID: 5942 Comm: syz.2.244 Not tainted syzkaller #0 [ 148.452990][ T5942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 148.463236][ T5942] Call Trace: [ 148.466602][ T5942] [ 148.469663][ T5942] dump_stack_lvl+0x188/0x250 [ 148.474380][ T5942] ? show_regs_print_info+0x20/0x20 [ 148.479685][ T5942] ? load_image+0x410/0x410 [ 148.484206][ T5942] ? __lock_acquire+0x7b50/0x7b50 [ 148.489252][ T5942] should_fail+0x383/0x4b0 [ 148.493768][ T5942] _copy_from_user+0x2e/0x170 [ 148.498461][ T5942] kstrtouint_from_user+0xd3/0x220 [ 148.503593][ T5942] ? kstrtol_from_user+0x2a0/0x2a0 [ 148.508739][ T5942] proc_fail_nth_write+0x8b/0x200 [ 148.513825][ T5942] ? proc_fail_nth_read+0x220/0x220 [ 148.519029][ T5942] ? common_file_perm+0x171/0x1c0 [ 148.524223][ T5942] ? proc_fail_nth_read+0x220/0x220 [ 148.529412][ T5942] vfs_write+0x304/0xd70 [ 148.533650][ T5942] ? file_end_write+0x250/0x250 [ 148.538498][ T5942] ? mutex_lock_nested+0x17/0x20 [ 148.543424][ T5942] ? __fdget_pos+0x2bf/0x370 [ 148.547996][ T5942] ? ksys_write+0x70/0x260 [ 148.552412][ T5942] ksys_write+0x153/0x260 [ 148.556729][ T5942] ? __ia32_sys_read+0x80/0x80 [ 148.561481][ T5942] ? lockdep_hardirqs_on+0x94/0x140 [ 148.566676][ T5942] do_syscall_64+0x4c/0xa0 [ 148.571078][ T5942] ? clear_bhb_loop+0x30/0x80 [ 148.575737][ T5942] ? clear_bhb_loop+0x30/0x80 [ 148.580396][ T5942] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 148.586452][ T5942] RIP: 0033:0x7f43fb03c74e [ 148.590979][ T5942] 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 [ 148.610666][ T5942] RSP: 002b:00007f43fa2d6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 148.619069][ T5942] RAX: ffffffffffffffda RBX: 00007f43fa2d76c0 RCX: 00007f43fb03c74e [ 148.627025][ T5942] RDX: 0000000000000001 RSI: 00007f43fa2d70b0 RDI: 0000000000000005 [ 148.635067][ T5942] RBP: 00007f43fa2d70a0 R08: 0000000000000000 R09: 0000000000000000 [ 148.643026][ T5942] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 148.651093][ T5942] R13: 000000000000006e R14: 00007f43fb220058 R15: 00007fffb4f5ab98 [ 148.659059][ T5942] [ 148.665597][ T5954] CPU: 1 PID: 5954 Comm: syz.1.245 Not tainted syzkaller #0 [ 148.672916][ T5954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 148.679090][ T5958] FAULT_INJECTION: forcing a failure. [ 148.679090][ T5958] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 148.682974][ T5954] Call Trace: [ 148.682987][ T5954] [ 148.682995][ T5954] dump_stack_lvl+0x188/0x250 [ 148.683022][ T5954] ? show_regs_print_info+0x20/0x20 [ 148.712049][ T5954] ? load_image+0x410/0x410 [ 148.716567][ T5954] ? __lock_acquire+0x7b50/0x7b50 [ 148.721605][ T5954] should_fail+0x383/0x4b0 [ 148.726036][ T5954] _copy_from_user+0x2e/0x170 [ 148.730719][ T5954] kstrtouint_from_user+0xd3/0x220 [ 148.735833][ T5954] ? kstrtol_from_user+0x2a0/0x2a0 [ 148.740952][ T5954] proc_fail_nth_write+0x8b/0x200 [ 148.746238][ T5954] ? proc_fail_nth_read+0x220/0x220 [ 148.751443][ T5954] ? common_file_perm+0x171/0x1c0 [ 148.752206][ T5960] FAULT_INJECTION: forcing a failure. [ 148.752206][ T5960] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 148.756472][ T5954] ? proc_fail_nth_read+0x220/0x220 [ 148.756495][ T5954] vfs_write+0x304/0xd70 [ 148.756519][ T5954] ? file_end_write+0x250/0x250 [ 148.756549][ T5954] ? mutex_lock_nested+0x17/0x20 [ 148.756566][ T5954] ? __fdget_pos+0x2bf/0x370 [ 148.793836][ T5954] ? ksys_write+0x70/0x260 [ 148.798362][ T5954] ksys_write+0x153/0x260 [ 148.802708][ T5954] ? __ia32_sys_read+0x80/0x80 [ 148.807485][ T5954] ? lockdep_hardirqs_on+0x94/0x140 [ 148.812913][ T5954] do_syscall_64+0x4c/0xa0 [ 148.817345][ T5954] ? clear_bhb_loop+0x30/0x80 [ 148.822034][ T5954] ? clear_bhb_loop+0x30/0x80 [ 148.826724][ T5954] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 148.832624][ T5954] RIP: 0033:0x7f3258da874e [ 148.837131][ T5954] 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 [ 148.856835][ T5954] RSP: 002b:00007f3258063ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 148.865295][ T5954] RAX: ffffffffffffffda RBX: 00007f32580646c0 RCX: 00007f3258da874e [ 148.873376][ T5954] RDX: 0000000000000001 RSI: 00007f32580640b0 RDI: 0000000000000007 [ 148.881457][ T5954] RBP: 00007f32580640a0 R08: 0000000000000000 R09: 0000000000000000 [ 148.889438][ T5954] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 148.897412][ T5954] R13: 000000000000000b R14: 00007f3258f8bf80 R15: 00007ffdf34c27f8 [ 148.905401][ T5954] [ 148.908046][ T5964] FAULT_INJECTION: forcing a failure. [ 148.908046][ T5964] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 148.931950][ T5960] CPU: 0 PID: 5960 Comm: syz.4.247 Not tainted syzkaller #0 [ 148.939275][ T5960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 148.949333][ T5960] Call Trace: [ 148.952619][ T5960] [ 148.955562][ T5960] dump_stack_lvl+0x188/0x250 [ 148.960264][ T5960] ? show_regs_print_info+0x20/0x20 [ 148.965473][ T5960] ? load_image+0x410/0x410 [ 148.969984][ T5960] ? __lock_acquire+0x7b50/0x7b50 [ 148.975001][ T5960] should_fail+0x383/0x4b0 [ 148.979407][ T5960] _copy_from_user+0x2e/0x170 [ 148.984072][ T5960] kstrtouint_from_user+0xd3/0x220 [ 148.989432][ T5960] ? kstrtol_from_user+0x2a0/0x2a0 [ 148.994535][ T5960] proc_fail_nth_write+0x8b/0x200 [ 148.999546][ T5960] ? proc_fail_nth_read+0x220/0x220 [ 149.004724][ T5960] ? common_file_perm+0x171/0x1c0 [ 149.009733][ T5960] ? proc_fail_nth_read+0x220/0x220 [ 149.014918][ T5960] vfs_write+0x304/0xd70 [ 149.019150][ T5960] ? file_end_write+0x250/0x250 [ 149.023992][ T5960] ? mutex_lock_nested+0x17/0x20 [ 149.028913][ T5960] ? __fdget_pos+0x2bf/0x370 [ 149.033485][ T5960] ? ksys_write+0x70/0x260 [ 149.037974][ T5960] ksys_write+0x153/0x260 [ 149.042291][ T5960] ? __ia32_sys_read+0x80/0x80 [ 149.047039][ T5960] ? lockdep_hardirqs_on+0x94/0x140 [ 149.052220][ T5960] do_syscall_64+0x4c/0xa0 [ 149.056614][ T5960] ? clear_bhb_loop+0x30/0x80 [ 149.061280][ T5960] ? clear_bhb_loop+0x30/0x80 [ 149.065941][ T5960] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 149.071841][ T5960] RIP: 0033:0x7f8c3f13c74e [ 149.076413][ T5960] 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 [ 149.096181][ T5960] RSP: 002b:00007f8c3e3d6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 149.104580][ T5960] RAX: ffffffffffffffda RBX: 00007f8c3e3d76c0 RCX: 00007f8c3f13c74e [ 149.112854][ T5960] RDX: 0000000000000001 RSI: 00007f8c3e3d70b0 RDI: 0000000000000005 [ 149.120816][ T5960] RBP: 00007f8c3e3d70a0 R08: 0000000000000000 R09: 0000000000000000 [ 149.128801][ T5960] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 149.136779][ T5960] R13: 000000000000006e R14: 00007f8c3f320058 R15: 00007ffc85ff7248 [ 149.144753][ T5960] [ 149.175843][ T5958] CPU: 0 PID: 5958 Comm: syz.0.246 Not tainted syzkaller #0 [ 149.183263][ T5958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 149.193426][ T5958] Call Trace: [ 149.196713][ T5958] [ 149.199667][ T5958] dump_stack_lvl+0x188/0x250 [ 149.204359][ T5958] ? show_regs_print_info+0x20/0x20 [ 149.209557][ T5958] ? load_image+0x410/0x410 [ 149.214239][ T5958] ? __lock_acquire+0x7b50/0x7b50 [ 149.219255][ T5958] should_fail+0x383/0x4b0 [ 149.223660][ T5958] _copy_from_user+0x2e/0x170 [ 149.228321][ T5958] kstrtouint_from_user+0xd3/0x220 [ 149.233416][ T5958] ? kstrtol_from_user+0x2a0/0x2a0 [ 149.238519][ T5958] proc_fail_nth_write+0x8b/0x200 [ 149.243534][ T5958] ? proc_fail_nth_read+0x220/0x220 [ 149.248718][ T5958] ? common_file_perm+0x171/0x1c0 [ 149.253729][ T5958] ? proc_fail_nth_read+0x220/0x220 [ 149.258910][ T5958] vfs_write+0x304/0xd70 [ 149.263138][ T5958] ? file_end_write+0x250/0x250 [ 149.267977][ T5958] ? mutex_lock_nested+0x17/0x20 [ 149.272895][ T5958] ? __fdget_pos+0x2bf/0x370 [ 149.277466][ T5958] ? ksys_write+0x70/0x260 [ 149.281864][ T5958] ksys_write+0x153/0x260 [ 149.286175][ T5958] ? __ia32_sys_read+0x80/0x80 [ 149.290923][ T5958] ? lockdep_hardirqs_on+0x94/0x140 [ 149.296107][ T5958] do_syscall_64+0x4c/0xa0 [ 149.300591][ T5958] ? clear_bhb_loop+0x30/0x80 [ 149.305251][ T5958] ? clear_bhb_loop+0x30/0x80 [ 149.309949][ T5958] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 149.315826][ T5958] RIP: 0033:0x7f0a25ce074e [ 149.320227][ T5958] 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 [ 149.339815][ T5958] RSP: 002b:00007f0a24f7aff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 149.348212][ T5958] RAX: ffffffffffffffda RBX: 00007f0a24f7b6c0 RCX: 00007f0a25ce074e [ 149.356187][ T5958] RDX: 0000000000000001 RSI: 00007f0a24f7b0b0 RDI: 0000000000000005 [ 149.364140][ T5958] RBP: 00007f0a24f7b0a0 R08: 0000000000000000 R09: 0000000000000000 [ 149.372189][ T5958] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 149.380144][ T5958] R13: 000000000000006e R14: 00007f0a25ec4058 R15: 00007fff8b3f2f08 [ 149.388111][ T5958] [ 149.395550][ T5964] CPU: 1 PID: 5964 Comm: syz.2.248 Not tainted syzkaller #0 [ 149.402873][ T5964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 149.412933][ T5964] Call Trace: [ 149.416220][ T5964] [ 149.419155][ T5964] dump_stack_lvl+0x188/0x250 [ 149.423848][ T5964] ? show_regs_print_info+0x20/0x20 [ 149.429074][ T5964] ? load_image+0x410/0x410 [ 149.433677][ T5964] ? __lock_acquire+0x7b50/0x7b50 [ 149.438733][ T5964] should_fail+0x383/0x4b0 [ 149.443168][ T5964] _copy_from_user+0x2e/0x170 [ 149.447956][ T5964] kstrtouint_from_user+0xd3/0x220 [ 149.453085][ T5964] ? kstrtol_from_user+0x2a0/0x2a0 [ 149.458226][ T5964] proc_fail_nth_write+0x8b/0x200 [ 149.463264][ T5964] ? proc_fail_nth_read+0x220/0x220 [ 149.468477][ T5964] ? common_file_perm+0x171/0x1c0 [ 149.473525][ T5964] ? proc_fail_nth_read+0x220/0x220 [ 149.478829][ T5964] vfs_write+0x304/0xd70 [ 149.483181][ T5964] ? file_end_write+0x250/0x250 [ 149.488059][ T5964] ? mutex_lock_nested+0x17/0x20 [ 149.493055][ T5964] ? __fdget_pos+0x2bf/0x370 [ 149.497754][ T5964] ? ksys_write+0x70/0x260 [ 149.502184][ T5964] ksys_write+0x153/0x260 [ 149.506530][ T5964] ? __ia32_sys_read+0x80/0x80 [ 149.511311][ T5964] ? lockdep_hardirqs_on+0x94/0x140 [ 149.516611][ T5964] do_syscall_64+0x4c/0xa0 [ 149.521037][ T5964] ? clear_bhb_loop+0x30/0x80 [ 149.525730][ T5964] ? clear_bhb_loop+0x30/0x80 [ 149.530417][ T5964] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 149.536326][ T5964] RIP: 0033:0x7f43fb03c74e [ 149.540750][ T5964] 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 [ 149.560361][ T5964] RSP: 002b:00007f43fa2d6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 149.568792][ T5964] RAX: ffffffffffffffda RBX: 00007f43fa2d76c0 RCX: 00007f43fb03c74e [ 149.576775][ T5964] RDX: 0000000000000001 RSI: 00007f43fa2d70b0 RDI: 0000000000000005 [ 149.584845][ T5964] RBP: 00007f43fa2d70a0 R08: 0000000000000000 R09: 0000000000000000 [ 149.592828][ T5964] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 149.600809][ T5964] R13: 000000000000006e R14: 00007f43fb220058 R15: 00007fffb4f5ab98 [ 149.608809][ T5964] [ 149.613617][ T5977] FAULT_INJECTION: forcing a failure. [ 149.613617][ T5977] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 149.631345][ T5977] CPU: 1 PID: 5977 Comm: syz.3.249 Not tainted syzkaller #0 [ 149.638683][ T5977] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 149.648990][ T5977] Call Trace: [ 149.652282][ T5977] [ 149.655224][ T5977] dump_stack_lvl+0x188/0x250 [ 149.659918][ T5977] ? show_regs_print_info+0x20/0x20 [ 149.665132][ T5977] ? load_image+0x410/0x410 [ 149.669672][ T5977] ? __lock_acquire+0x7b50/0x7b50 [ 149.674806][ T5977] should_fail+0x383/0x4b0 [ 149.679244][ T5977] _copy_from_user+0x2e/0x170 [ 149.684036][ T5977] kstrtouint_from_user+0xd3/0x220 [ 149.689164][ T5977] ? kstrtol_from_user+0x2a0/0x2a0 [ 149.694304][ T5977] proc_fail_nth_write+0x8b/0x200 [ 149.699354][ T5977] ? proc_fail_nth_read+0x220/0x220 [ 149.704561][ T5977] ? common_file_perm+0x171/0x1c0 [ 149.709686][ T5977] ? proc_fail_nth_read+0x220/0x220 [ 149.714910][ T5977] vfs_write+0x304/0xd70 [ 149.719267][ T5977] ? file_end_write+0x250/0x250 [ 149.724144][ T5977] ? mutex_lock_nested+0x17/0x20 [ 149.729095][ T5977] ? __fdget_pos+0x2bf/0x370 [ 149.733696][ T5977] ? ksys_write+0x70/0x260 [ 149.738123][ T5977] ksys_write+0x153/0x260 [ 149.742468][ T5977] ? __ia32_sys_read+0x80/0x80 [ 149.747242][ T5977] ? lockdep_hardirqs_on+0x94/0x140 [ 149.752451][ T5977] do_syscall_64+0x4c/0xa0 [ 149.756875][ T5977] ? clear_bhb_loop+0x30/0x80 [ 149.761565][ T5977] ? clear_bhb_loop+0x30/0x80 [ 149.766251][ T5977] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 149.772153][ T5977] RIP: 0033:0x7f496b98e74e [ 149.776575][ T5977] 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 [ 149.796273][ T5977] RSP: 002b:00007f496ac28ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 149.804699][ T5977] RAX: ffffffffffffffda RBX: 00007f496ac296c0 RCX: 00007f496b98e74e [ 149.812766][ T5977] RDX: 0000000000000001 RSI: 00007f496ac290b0 RDI: 0000000000000005 [ 149.820755][ T5977] RBP: 00007f496ac290a0 R08: 0000000000000000 R09: 0000000000000000 [ 149.828827][ T5977] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 149.836806][ T5977] R13: 000000000000006e R14: 00007f496bb72058 R15: 00007ffc8ba6e9a8 [ 149.844816][ T5977] [ 149.851949][ T5988] FAULT_INJECTION: forcing a failure. [ 149.851949][ T5988] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 149.879761][ T5988] CPU: 1 PID: 5988 Comm: syz.1.250 Not tainted syzkaller #0 [ 149.887176][ T5988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 149.897238][ T5988] Call Trace: [ 149.900521][ T5988] [ 149.903436][ T5988] dump_stack_lvl+0x188/0x250 [ 149.908105][ T5988] ? show_regs_print_info+0x20/0x20 [ 149.913294][ T5988] ? load_image+0x410/0x410 [ 149.917786][ T5988] ? __lock_acquire+0x7b50/0x7b50 [ 149.922799][ T5988] should_fail+0x383/0x4b0 [ 149.927293][ T5988] _copy_from_user+0x2e/0x170 [ 149.931959][ T5988] kstrtouint_from_user+0xd3/0x220 [ 149.937056][ T5988] ? kstrtol_from_user+0x2a0/0x2a0 [ 149.942162][ T5988] proc_fail_nth_write+0x8b/0x200 [ 149.947171][ T5988] ? proc_fail_nth_read+0x220/0x220 [ 149.952353][ T5988] ? common_file_perm+0x171/0x1c0 [ 149.957366][ T5988] ? proc_fail_nth_read+0x220/0x220 [ 149.962561][ T5988] vfs_write+0x304/0xd70 [ 149.966823][ T5988] ? file_end_write+0x250/0x250 [ 149.971684][ T5988] ? mutex_lock_nested+0x17/0x20 [ 149.976641][ T5988] ? __fdget_pos+0x2bf/0x370 [ 149.981217][ T5988] ? ksys_write+0x70/0x260 [ 149.985628][ T5988] ksys_write+0x153/0x260 [ 149.989949][ T5988] ? __ia32_sys_read+0x80/0x80 [ 149.994700][ T5988] ? lockdep_hardirqs_on+0x94/0x140 [ 149.999886][ T5988] do_syscall_64+0x4c/0xa0 [ 150.004284][ T5988] ? clear_bhb_loop+0x30/0x80 [ 150.008943][ T5988] ? clear_bhb_loop+0x30/0x80 [ 150.013613][ T5988] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 150.019664][ T5988] RIP: 0033:0x7f3258da874e [ 150.024070][ T5988] 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 [ 150.043749][ T5988] RSP: 002b:00007f3258042ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 150.052237][ T5988] RAX: ffffffffffffffda RBX: 00007f32580436c0 RCX: 00007f3258da874e [ 150.060196][ T5988] RDX: 0000000000000001 RSI: 00007f32580430b0 RDI: 0000000000000005 [ 150.068152][ T5988] RBP: 00007f32580430a0 R08: 0000000000000000 R09: 0000000000000000 [ 150.076106][ T5988] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 150.084071][ T5988] R13: 000000000000006e R14: 00007f3258f8c058 R15: 00007ffdf34c27f8 [ 150.092049][ T5988] [ 150.134762][ T5990] FAULT_INJECTION: forcing a failure. [ 150.134762][ T5990] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 150.181855][ T5994] FAULT_INJECTION: forcing a failure. [ 150.181855][ T5994] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 150.199335][ T5997] FAULT_INJECTION: forcing a failure. [ 150.199335][ T5997] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 150.212983][ T5990] CPU: 0 PID: 5990 Comm: syz.4.252 Not tainted syzkaller #0 [ 150.220390][ T5990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 150.230459][ T5990] Call Trace: [ 150.233748][ T5990] [ 150.236700][ T5990] dump_stack_lvl+0x188/0x250 [ 150.241732][ T5990] ? show_regs_print_info+0x20/0x20 [ 150.246933][ T5990] ? load_image+0x410/0x410 [ 150.251455][ T5990] ? __lock_acquire+0x7b50/0x7b50 [ 150.256493][ T5990] should_fail+0x383/0x4b0 [ 150.260916][ T5990] _copy_from_user+0x2e/0x170 [ 150.265595][ T5990] kstrtouint_from_user+0xd3/0x220 [ 150.270723][ T5990] ? kstrtol_from_user+0x2a0/0x2a0 [ 150.275861][ T5990] proc_fail_nth_write+0x8b/0x200 [ 150.280933][ T5990] ? proc_fail_nth_read+0x220/0x220 [ 150.286139][ T5990] ? common_file_perm+0x171/0x1c0 [ 150.291187][ T5990] ? proc_fail_nth_read+0x220/0x220 [ 150.296568][ T5990] vfs_write+0x304/0xd70 [ 150.300828][ T5990] ? file_end_write+0x250/0x250 [ 150.305689][ T5990] ? mutex_lock_nested+0x17/0x20 [ 150.310625][ T5990] ? __fdget_pos+0x2bf/0x370 [ 150.315214][ T5990] ? ksys_write+0x70/0x260 [ 150.319634][ T5990] ksys_write+0x153/0x260 [ 150.323961][ T5990] ? __ia32_sys_read+0x80/0x80 [ 150.328718][ T5990] ? lockdep_hardirqs_on+0x94/0x140 [ 150.333914][ T5990] do_syscall_64+0x4c/0xa0 [ 150.338331][ T5990] ? clear_bhb_loop+0x30/0x80 [ 150.342997][ T5990] ? clear_bhb_loop+0x30/0x80 [ 150.347665][ T5990] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 150.353633][ T5990] RIP: 0033:0x7f8c3f13c74e [ 150.358046][ T5990] 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 [ 150.377915][ T5990] RSP: 002b:00007f8c3e3f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 150.386325][ T5990] RAX: ffffffffffffffda RBX: 00007f8c3e3f86c0 RCX: 00007f8c3f13c74e [ 150.394288][ T5990] RDX: 0000000000000001 RSI: 00007f8c3e3f80b0 RDI: 0000000000000007 [ 150.402255][ T5990] RBP: 00007f8c3e3f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 150.410340][ T5990] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 150.418312][ T5990] R13: 000000000000000b R14: 00007f8c3f31ff80 R15: 00007ffc85ff7248 [ 150.426380][ T5990] [ 150.429398][ T5997] CPU: 1 PID: 5997 Comm: syz.2.251 Not tainted syzkaller #0 [ 150.436690][ T5997] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 150.446737][ T5997] Call Trace: [ 150.450004][ T5997] [ 150.452925][ T5997] dump_stack_lvl+0x188/0x250 [ 150.457595][ T5997] ? show_regs_print_info+0x20/0x20 [ 150.462781][ T5997] ? load_image+0x410/0x410 [ 150.467270][ T5997] ? __lock_acquire+0x7b50/0x7b50 [ 150.472287][ T5997] should_fail+0x383/0x4b0 [ 150.476704][ T5997] _copy_from_user+0x2e/0x170 [ 150.481371][ T5997] kstrtouint_from_user+0xd3/0x220 [ 150.486478][ T5997] ? kstrtol_from_user+0x2a0/0x2a0 [ 150.491659][ T5997] proc_fail_nth_write+0x8b/0x200 [ 150.496682][ T5997] ? proc_fail_nth_read+0x220/0x220 [ 150.501954][ T5997] ? common_file_perm+0x171/0x1c0 [ 150.506999][ T5997] ? proc_fail_nth_read+0x220/0x220 [ 150.512191][ T5997] vfs_write+0x304/0xd70 [ 150.516426][ T5997] ? file_end_write+0x250/0x250 [ 150.521276][ T5997] ? mutex_lock_nested+0x17/0x20 [ 150.526199][ T5997] ? __fdget_pos+0x2bf/0x370 [ 150.530791][ T5997] ? ksys_write+0x70/0x260 [ 150.535195][ T5997] ksys_write+0x153/0x260 [ 150.539516][ T5997] ? __ia32_sys_read+0x80/0x80 [ 150.544273][ T5997] ? lockdep_hardirqs_on+0x94/0x140 [ 150.549460][ T5997] do_syscall_64+0x4c/0xa0 [ 150.553857][ T5997] ? clear_bhb_loop+0x30/0x80 [ 150.558519][ T5997] ? clear_bhb_loop+0x30/0x80 [ 150.563187][ T5997] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 150.569153][ T5997] RIP: 0033:0x7f43fb03c74e [ 150.573557][ T5997] 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 [ 150.593146][ T5997] RSP: 002b:00007f43fa2f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 150.601546][ T5997] RAX: ffffffffffffffda RBX: 00007f43fa2f86c0 RCX: 00007f43fb03c74e [ 150.609510][ T5997] RDX: 0000000000000001 RSI: 00007f43fa2f80b0 RDI: 0000000000000007 [ 150.617477][ T5997] RBP: 00007f43fa2f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 150.625448][ T5997] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 150.633531][ T5997] R13: 000000000000000b R14: 00007f43fb21ff80 R15: 00007fffb4f5ab98 [ 150.641946][ T5997] [ 150.648905][ T5994] CPU: 1 PID: 5994 Comm: syz.0.253 Not tainted syzkaller #0 [ 150.656228][ T5994] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 150.666378][ T5994] Call Trace: [ 150.669671][ T5994] [ 150.672705][ T5994] dump_stack_lvl+0x188/0x250 [ 150.677494][ T5994] ? show_regs_print_info+0x20/0x20 [ 150.682694][ T5994] ? load_image+0x410/0x410 [ 150.687190][ T5994] ? __lock_acquire+0x7b50/0x7b50 [ 150.692209][ T5994] should_fail+0x383/0x4b0 [ 150.696637][ T5994] _copy_from_user+0x2e/0x170 [ 150.701309][ T5994] kstrtouint_from_user+0xd3/0x220 [ 150.706415][ T5994] ? kstrtol_from_user+0x2a0/0x2a0 [ 150.711606][ T5994] proc_fail_nth_write+0x8b/0x200 [ 150.716646][ T5994] ? proc_fail_nth_read+0x220/0x220 [ 150.721831][ T5994] ? common_file_perm+0x171/0x1c0 [ 150.726863][ T5994] ? proc_fail_nth_read+0x220/0x220 [ 150.732045][ T5994] vfs_write+0x304/0xd70 [ 150.736282][ T5994] ? file_end_write+0x250/0x250 [ 150.741129][ T5994] ? mutex_lock_nested+0x17/0x20 [ 150.746052][ T5994] ? __fdget_pos+0x2bf/0x370 [ 150.750624][ T5994] ? ksys_write+0x70/0x260 [ 150.755025][ T5994] ksys_write+0x153/0x260 [ 150.759339][ T5994] ? __ia32_sys_read+0x80/0x80 [ 150.764090][ T5994] ? lockdep_hardirqs_on+0x94/0x140 [ 150.769275][ T5994] do_syscall_64+0x4c/0xa0 [ 150.774196][ T5994] ? clear_bhb_loop+0x30/0x80 [ 150.778855][ T5994] ? clear_bhb_loop+0x30/0x80 [ 150.783521][ T5994] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 150.789395][ T5994] RIP: 0033:0x7f0a25ce074e [ 150.793800][ T5994] 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 [ 150.813823][ T5994] RSP: 002b:00007f0a24f9bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 150.822314][ T5994] RAX: ffffffffffffffda RBX: 00007f0a24f9c6c0 RCX: 00007f0a25ce074e [ 150.830705][ T5994] RDX: 0000000000000001 RSI: 00007f0a24f9c0b0 RDI: 0000000000000007 [ 150.838660][ T5994] RBP: 00007f0a24f9c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 150.846618][ T5994] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 150.854577][ T5994] R13: 000000000000000b R14: 00007f0a25ec3f80 R15: 00007fff8b3f2f08 [ 150.862659][ T5994] 2026/07/19 10:40:23 executed programs: 250 [ 150.910734][ T6002] FAULT_INJECTION: forcing a failure. [ 150.910734][ T6002] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 150.941683][ T6002] CPU: 0 PID: 6002 Comm: syz.3.254 Not tainted syzkaller #0 [ 150.943269][ T6007] FAULT_INJECTION: forcing a failure. [ 150.943269][ T6007] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 150.949004][ T6002] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 150.949017][ T6002] Call Trace: [ 150.949055][ T6002] [ 150.949063][ T6002] dump_stack_lvl+0x188/0x250 [ 150.982955][ T6002] ? show_regs_print_info+0x20/0x20 [ 150.988163][ T6002] ? load_image+0x410/0x410 [ 150.992680][ T6002] ? __lock_acquire+0x7b50/0x7b50 [ 150.997712][ T6002] should_fail+0x383/0x4b0 [ 151.002140][ T6002] _copy_from_user+0x2e/0x170 [ 151.006825][ T6002] kstrtouint_from_user+0xd3/0x220 [ 151.011950][ T6002] ? kstrtol_from_user+0x2a0/0x2a0 [ 151.017166][ T6002] proc_fail_nth_write+0x8b/0x200 [ 151.022188][ T6002] ? proc_fail_nth_read+0x220/0x220 [ 151.027387][ T6002] ? common_file_perm+0x171/0x1c0 [ 151.032496][ T6002] ? proc_fail_nth_read+0x220/0x220 [ 151.037692][ T6002] vfs_write+0x304/0xd70 [ 151.041984][ T6002] ? file_end_write+0x250/0x250 [ 151.046845][ T6002] ? mutex_lock_nested+0x17/0x20 [ 151.051783][ T6002] ? __fdget_pos+0x2bf/0x370 [ 151.056465][ T6002] ? ksys_write+0x70/0x260 [ 151.060891][ T6002] ksys_write+0x153/0x260 [ 151.061914][ T6009] FAULT_INJECTION: forcing a failure. [ 151.061914][ T6009] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 151.065230][ T6002] ? __ia32_sys_read+0x80/0x80 [ 151.082997][ T6002] ? lockdep_hardirqs_on+0x94/0x140 [ 151.088282][ T6002] do_syscall_64+0x4c/0xa0 [ 151.092696][ T6002] ? clear_bhb_loop+0x30/0x80 [ 151.097362][ T6002] ? clear_bhb_loop+0x30/0x80 [ 151.102036][ T6002] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 151.107933][ T6002] RIP: 0033:0x7f496b98e74e [ 151.112351][ T6002] 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 [ 151.131962][ T6002] RSP: 002b:00007f496ac49ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 151.140377][ T6002] RAX: ffffffffffffffda RBX: 00007f496ac4a6c0 RCX: 00007f496b98e74e [ 151.148517][ T6002] RDX: 0000000000000001 RSI: 00007f496ac4a0b0 RDI: 0000000000000008 [ 151.156483][ T6002] RBP: 00007f496ac4a0a0 R08: 0000000000000000 R09: 0000000000000000 [ 151.164543][ T6002] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 151.172504][ T6002] R13: 000000000000000b R14: 00007f496bb71f80 R15: 00007ffc8ba6e9a8 [ 151.180492][ T6002] [ 151.183503][ T6009] CPU: 1 PID: 6009 Comm: syz.1.256 Not tainted syzkaller #0 [ 151.190793][ T6009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 151.200860][ T6009] Call Trace: [ 151.204143][ T6009] [ 151.207079][ T6009] dump_stack_lvl+0x188/0x250 [ 151.211782][ T6009] ? show_regs_print_info+0x20/0x20 [ 151.216984][ T6009] ? load_image+0x410/0x410 [ 151.221481][ T6009] ? __lock_acquire+0x7b50/0x7b50 [ 151.226495][ T6009] should_fail+0x383/0x4b0 [ 151.230988][ T6009] _copy_from_user+0x2e/0x170 [ 151.235746][ T6009] kstrtouint_from_user+0xd3/0x220 [ 151.240850][ T6009] ? kstrtol_from_user+0x2a0/0x2a0 [ 151.245955][ T6009] proc_fail_nth_write+0x8b/0x200 [ 151.250964][ T6009] ? proc_fail_nth_read+0x220/0x220 [ 151.256147][ T6009] ? common_file_perm+0x171/0x1c0 [ 151.261157][ T6009] ? proc_fail_nth_read+0x220/0x220 [ 151.266338][ T6009] vfs_write+0x304/0xd70 [ 151.270578][ T6009] ? file_end_write+0x250/0x250 [ 151.275421][ T6009] ? mutex_lock_nested+0x17/0x20 [ 151.280340][ T6009] ? __fdget_pos+0x2bf/0x370 [ 151.284914][ T6009] ? ksys_write+0x70/0x260 [ 151.289320][ T6009] ksys_write+0x153/0x260 [ 151.293640][ T6009] ? __ia32_sys_read+0x80/0x80 [ 151.298390][ T6009] ? lockdep_hardirqs_on+0x94/0x140 [ 151.303728][ T6009] do_syscall_64+0x4c/0xa0 [ 151.308216][ T6009] ? clear_bhb_loop+0x30/0x80 [ 151.312874][ T6009] ? clear_bhb_loop+0x30/0x80 [ 151.317550][ T6009] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 151.323439][ T6009] RIP: 0033:0x7f3258da874e [ 151.327927][ T6009] 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 [ 151.347807][ T6009] RSP: 002b:00007f3258042ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 151.356216][ T6009] RAX: ffffffffffffffda RBX: 00007f32580436c0 RCX: 00007f3258da874e [ 151.364267][ T6009] RDX: 0000000000000001 RSI: 00007f32580430b0 RDI: 0000000000000004 [ 151.372229][ T6009] RBP: 00007f32580430a0 R08: 0000000000000000 R09: 0000000000000000 [ 151.380269][ T6009] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 151.388235][ T6009] R13: 000000000000006e R14: 00007f3258f8c058 R15: 00007ffdf34c27f8 [ 151.396202][ T6009] [ 151.410874][ T6007] CPU: 1 PID: 6007 Comm: syz.4.255 Not tainted syzkaller #0 [ 151.418198][ T6007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 151.428273][ T6007] Call Trace: [ 151.431563][ T6007] [ 151.434501][ T6007] dump_stack_lvl+0x188/0x250 [ 151.439221][ T6007] ? show_regs_print_info+0x20/0x20 [ 151.444419][ T6007] ? load_image+0x410/0x410 [ 151.449089][ T6007] ? __lock_acquire+0x7b50/0x7b50 [ 151.454106][ T6007] should_fail+0x383/0x4b0 [ 151.458511][ T6007] _copy_from_user+0x2e/0x170 [ 151.463186][ T6007] kstrtouint_from_user+0xd3/0x220 [ 151.468283][ T6007] ? kstrtol_from_user+0x2a0/0x2a0 [ 151.473488][ T6007] proc_fail_nth_write+0x8b/0x200 [ 151.478501][ T6007] ? proc_fail_nth_read+0x220/0x220 [ 151.483855][ T6007] ? common_file_perm+0x171/0x1c0 [ 151.488873][ T6007] ? proc_fail_nth_read+0x220/0x220 [ 151.494056][ T6007] vfs_write+0x304/0xd70 [ 151.498290][ T6007] ? file_end_write+0x250/0x250 [ 151.503160][ T6007] ? mutex_lock_nested+0x17/0x20 [ 151.508084][ T6007] ? __fdget_pos+0x2bf/0x370 [ 151.512656][ T6007] ? ksys_write+0x70/0x260 [ 151.517057][ T6007] ksys_write+0x153/0x260 [ 151.521401][ T6007] ? __ia32_sys_read+0x80/0x80 [ 151.526153][ T6007] ? lockdep_hardirqs_on+0x94/0x140 [ 151.531345][ T6007] do_syscall_64+0x4c/0xa0 [ 151.535745][ T6007] ? clear_bhb_loop+0x30/0x80 [ 151.540403][ T6007] ? clear_bhb_loop+0x30/0x80 [ 151.545063][ T6007] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 151.550941][ T6007] RIP: 0033:0x7f8c3f13c74e [ 151.555350][ T6007] 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 [ 151.574951][ T6007] RSP: 002b:00007f8c3e3f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 151.583525][ T6007] RAX: ffffffffffffffda RBX: 00007f8c3e3f86c0 RCX: 00007f8c3f13c74e [ 151.591660][ T6007] RDX: 0000000000000001 RSI: 00007f8c3e3f80b0 RDI: 0000000000000007 [ 151.599624][ T6007] RBP: 00007f8c3e3f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 151.607578][ T6007] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 151.615539][ T6007] R13: 000000000000000b R14: 00007f8c3f31ff80 R15: 00007ffc85ff7248 [ 151.623506][ T6007] [ 151.680491][ T6017] FAULT_INJECTION: forcing a failure. [ 151.680491][ T6017] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 151.705127][ T6019] FAULT_INJECTION: forcing a failure. [ 151.705127][ T6019] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 151.705787][ T6019] [ 151.705793][ T6019] ====================================================== [ 151.705798][ T6019] WARNING: possible circular locking dependency detected [ 151.705808][ T6019] syzkaller #0 Not tainted [ 151.705815][ T6019] ------------------------------------------------------ [ 151.705819][ T6019] syz.2.258/6019 is trying to acquire lock: [ 151.705826][ T6019] ffffffff8c3139a0 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x2c/0x60 [ 151.705863][ T6019] [ 151.705863][ T6019] but task is already holding lock: [ 151.705867][ T6019] ffff8880b903a358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x130 [ 151.705897][ T6019] [ 151.705897][ T6019] which lock already depends on the new lock. [ 151.705897][ T6019] [ 151.705901][ T6019] [ 151.705901][ T6019] the existing dependency chain (in reverse order) is: [ 151.705905][ T6019] [ 151.705905][ T6019] -> #4 (&rq->__lock){-.-.}-{2:2}: [ 151.705919][ T6019] _raw_spin_lock_nested+0x2e/0x40 [ 151.705938][ T6019] raw_spin_rq_lock_nested+0x25/0x130 [ 151.705949][ T6019] task_fork_fair+0x5c/0x360 [ 151.705959][ T6019] sched_cgroup_fork+0x2e8/0x340 [ 151.705971][ T6019] copy_process+0x2348/0x3ec0 [ 151.705982][ T6019] kernel_clone+0x23f/0x990 [ 151.705991][ T6019] kernel_thread+0xfa/0x160 [ 151.706001][ T6019] rest_init+0x21/0x330 [ 151.706012][ T6019] start_kernel+0x489/0x540 [ 151.706022][ T6019] secondary_startup_64_no_verify+0xb1/0xbb [ 151.706034][ T6019] [ 151.706034][ T6019] -> #3 (&p->pi_lock){-.-.}-{2:2}: [ 151.706048][ T6019] _raw_spin_lock_irqsave+0xb0/0x100 [ 151.706060][ T6019] try_to_wake_up+0x5a/0x1020 [ 151.706071][ T6019] __wake_up_common+0x28e/0x4d0 [ 151.706083][ T6019] __wake_up+0x10e/0x180 [ 151.706093][ T6019] tty_port_default_wakeup+0xa5/0xf0 [ 151.706104][ T6019] serial8250_tx_chars+0x615/0x800 [ 151.706115][ T6019] serial8250_handle_irq+0x4f5/0x5f0 [ 151.706125][ T6019] serial8250_default_handle_irq+0xb4/0x1a0 [ 151.706136][ T6019] serial8250_interrupt+0x9b/0x1c0 [ 151.706146][ T6019] __handle_irq_event_percpu+0x299/0x9d0 [ 151.706157][ T6019] handle_irq_event+0xa5/0x220 [ 151.706167][ T6019] handle_edge_irq+0x242/0xb20 [ 151.706178][ T6019] __common_interrupt+0xd7/0x1e0 [ 151.706188][ T6019] common_interrupt+0xb0/0xd0 [ 151.706198][ T6019] asm_common_interrupt+0x22/0x40 [ 151.706207][ T6019] lock_acquire+0x208/0x400 [ 151.706219][ T6019] _raw_spin_lock+0x2a/0x40 [ 151.706230][ T6019] validate_mm+0x360/0xa50 [ 151.706241][ T6019] mmap_region+0xe80/0x1730 [ 151.706251][ T6019] do_mmap+0x801/0xe30 [ 151.706260][ T6019] vm_mmap_pgoff+0x1c1/0x2d0 [ 151.706270][ T6019] ksys_mmap_pgoff+0x4e2/0x790 [ 151.706280][ T6019] do_syscall_64+0x4c/0xa0 [ 151.706289][ T6019] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 151.706299][ T6019] [ 151.706299][ T6019] -> #2 (&tty->write_wait){-.-.}-{2:2}: [ 151.706313][ T6019] _raw_spin_lock_irqsave+0xb0/0x100 [ 151.706324][ T6019] __wake_up+0xf4/0x180 [ 151.706334][ T6019] tty_port_default_wakeup+0xa5/0xf0 [ 151.706344][ T6019] serial8250_tx_chars+0x615/0x800 [ 151.706354][ T6019] serial8250_handle_irq+0x4f5/0x5f0 [ 151.706364][ T6019] serial8250_default_handle_irq+0xb4/0x1a0 [ 151.706375][ T6019] serial8250_interrupt+0x9b/0x1c0 [ 151.706385][ T6019] __handle_irq_event_percpu+0x299/0x9d0 [ 151.706395][ T6019] handle_irq_event+0xa5/0x220 [ 151.706405][ T6019] handle_edge_irq+0x242/0xb20 [ 151.706416][ T6019] __common_interrupt+0xd7/0x1e0 [ 151.706426][ T6019] common_interrupt+0xb0/0xd0 [ 151.706436][ T6019] asm_common_interrupt+0x22/0x40 [ 151.706446][ T6019] default_idle+0xb/0x10 [ 151.706456][ T6019] default_idle_call+0x81/0xc0 [ 151.706467][ T6019] do_idle+0x3a1/0x650 [ 151.706478][ T6019] cpu_startup_entry+0x14/0x20 [ 151.706489][ T6019] start_kernel+0x489/0x540 [ 151.706497][ T6019] secondary_startup_64_no_verify+0xb1/0xbb [ 151.706509][ T6019] [ 151.706509][ T6019] -> #1 (&port_lock_key){-.-.}-{2:2}: [ 151.706522][ T6019] _raw_spin_lock_irqsave+0xb0/0x100 [ 151.706534][ T6019] serial8250_console_write+0x16c/0xf50 [ 151.706545][ T6019] console_unlock+0xb47/0x10f0 [ 151.706554][ T6019] vprintk_emit+0xc0/0x150 [ 151.706563][ T6019] _printk+0xda/0x130 [ 151.706574][ T6019] register_console+0x693/0x970 [ 151.706584][ T6019] univ8250_console_init+0x41/0x50 [ 151.706596][ T6019] console_init+0x177/0x5d0 [ 151.706605][ T6019] start_kernel+0x2fc/0x540 [ 151.706612][ T6019] secondary_startup_64_no_verify+0xb1/0xbb [ 151.706621][ T6019] [ 151.706621][ T6019] -> #0 (console_owner){....}-{0:0}: [ 151.706631][ T6019] __lock_acquire+0x2c66/0x7b50 [ 151.706640][ T6019] lock_acquire+0x19e/0x400 [ 151.706648][ T6019] console_lock_spinning_enable+0x51/0x60 [ 151.706656][ T6019] console_unlock+0x8b5/0x10f0 [ 151.706663][ T6019] vprintk_emit+0xc0/0x150 [ 151.706670][ T6019] _printk+0xda/0x130 [ 151.706677][ T6019] should_fail+0x364/0x4b0 [ 151.706686][ T6019] strncpy_from_user+0x32/0x350 [ 151.706693][ T6019] strncpy_from_user_nofault+0x6d/0x140 [ 151.706703][ T6019] bpf_probe_read_user_str+0x26/0x70 [ 151.706712][ T6019] bpf_prog_693483806bd7978c+0x5b/0xae8 [ 151.706721][ T6019] bpf_trace_run2+0x163/0x2e0 [ 151.706728][ T6019] __traceiter_tlb_flush+0x69/0xb0 [ 151.706739][ T6019] trace_tlb_flush+0xe6/0x110 [ 151.706747][ T6019] switch_mm_irqs_off+0x73a/0x9d0 [ 151.706754][ T6019] __schedule+0x102e/0x4350 [ 151.706762][ T6019] preempt_schedule_irq+0xbb/0x160 [ 151.706770][ T6019] irqentry_exit+0x63/0x70 [ 151.706777][ T6019] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 151.706786][ T6019] check_stack_object+0x4b/0x80 [ 151.706794][ T6019] __check_object_size+0x5c/0x410 [ 151.706803][ T6019] simple_read_from_buffer+0xd3/0x150 [ 151.706812][ T6019] proc_fail_nth_read+0x1a6/0x220 [ 151.706822][ T6019] vfs_read+0x2ff/0xd50 [ 151.706829][ T6019] ksys_read+0x153/0x260 [ 151.706836][ T6019] do_syscall_64+0x4c/0xa0 [ 151.706843][ T6019] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 151.706851][ T6019] [ 151.706851][ T6019] other info that might help us debug this: [ 151.706851][ T6019] [ 151.706854][ T6019] Chain exists of: [ 151.706854][ T6019] console_owner --> &p->pi_lock --> &rq->__lock [ 151.706854][ T6019] [ 151.706865][ T6019] Possible unsafe locking scenario: [ 151.706865][ T6019] [ 151.706868][ T6019] CPU0 CPU1 [ 151.706870][ T6019] ---- ---- [ 151.706872][ T6019] lock(&rq->__lock); [ 151.706877][ T6019] lock(&p->pi_lock); [ 151.706882][ T6019] lock(&rq->__lock); [ 151.706887][ T6019] lock(console_owner); [ 151.706892][ T6019] [ 151.706892][ T6019] *** DEADLOCK *** [ 151.706892][ T6019] [ 151.706894][ T6019] 4 locks held by syz.2.258/6019: [ 151.706899][ T6019] #0: ffff888076320870 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2bf/0x370 [ 151.706919][ T6019] #1: ffff8880b903a358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x130 [ 151.706943][ T6019] #2: ffffffff8c31ef20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 [ 151.706962][ T6019] #3: ffffffff8c313a80 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0xa7/0x150 [ 151.706980][ T6019] [ 151.706980][ T6019] stack backtrace: [ 151.706983][ T6019] CPU: 0 PID: 6019 Comm: syz.2.258 Not tainted syzkaller #0 [ 151.706993][ T6019] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 151.706998][ T6019] Call Trace: [ 151.707001][ T6019] [ 151.707005][ T6019] dump_stack_lvl+0x188/0x250 [ 151.707016][ T6019] ? load_image+0x410/0x410 [ 151.707025][ T6019] ? show_regs_print_info+0x20/0x20 [ 151.707036][ T6019] ? print_circular_bug+0x12b/0x1a0 [ 151.707045][ T6019] check_noncircular+0x296/0x330 [ 151.707054][ T6019] ? add_chain_block+0x9b0/0x9b0 [ 151.707062][ T6019] ? lockdep_lock+0xf1/0x1f0 [ 151.707071][ T6019] ? lockdep_unlock+0x143/0x2e0 [ 151.707082][ T6019] __lock_acquire+0x2c66/0x7b50 [ 151.707095][ T6019] ? format_decode+0x19b/0x1330 [ 151.707106][ T6019] ? verify_lock_unused+0x140/0x140 [ 151.707119][ T6019] ? sprintf+0xe4/0x140 [ 151.707128][ T6019] lock_acquire+0x19e/0x400 [ 151.707137][ T6019] ? console_lock_spinning_enable+0x2c/0x60 [ 151.707146][ T6019] ? prb_read_valid+0x60/0x60 [ 151.707156][ T6019] ? read_lock_is_recursive+0x10/0x10 [ 151.707165][ T6019] ? do_raw_spin_lock+0x128/0x2f0 [ 151.707174][ T6019] ? __rwlock_init+0x140/0x140 [ 151.707183][ T6019] ? do_raw_spin_unlock+0x11d/0x230 [ 151.707192][ T6019] console_lock_spinning_enable+0x51/0x60 [ 151.707200][ T6019] ? console_lock_spinning_enable+0x2c/0x60 [ 151.707208][ T6019] console_unlock+0x8b5/0x10f0 [ 151.707216][ T6019] ? read_lock_is_recursive+0x10/0x10 [ 151.707227][ T6019] ? console_trylock_spinning+0x370/0x370 [ 151.707236][ T6019] ? __down_trylock_console_sem+0x19f/0x1f0 [ 151.707245][ T6019] ? vprintk_emit+0xa7/0x150 [ 151.707253][ T6019] ? printk_parse_prefix+0x310/0x310 [ 151.707261][ T6019] ? vprintk_emit+0xa7/0x150 [ 151.707268][ T6019] ? console_trylock+0x70/0x70 [ 151.707276][ T6019] ? mark_lock+0x94/0x320 [ 151.707284][ T6019] ? __lock_acquire+0x1305/0x7b50 [ 151.707295][ T6019] ? vprintk_emit+0x150/0x150 [ 151.707303][ T6019] ? search_extable+0x8c/0xd0 [ 151.707313][ T6019] ? __lock_acquire+0x7b50/0x7b50 [ 151.707322][ T6019] ? strncpy_from_user+0x268/0x350 [ 151.707331][ T6019] vprintk_emit+0xc0/0x150 [ 151.707339][ T6019] _printk+0xda/0x130 [ 151.707349][ T6019] ? load_image+0x410/0x410 [ 151.707357][ T6019] ? exc_page_fault+0x88/0x100 [ 151.707367][ T6019] should_fail+0x364/0x4b0 [ 151.707377][ T6019] strncpy_from_user+0x32/0x350 [ 151.707384][ T6019] ? read_lock_is_recursive+0x10/0x10 [ 151.707395][ T6019] strncpy_from_user_nofault+0x6d/0x140 [ 151.707404][ T6019] bpf_probe_read_user_str+0x26/0x70 [ 151.707414][ T6019] bpf_prog_693483806bd7978c+0x5b/0xae8 [ 151.707423][ T6019] bpf_trace_run2+0x163/0x2e0 [ 151.707433][ T6019] ? bpf_trace_run1+0x2e0/0x2e0 [ 151.707443][ T6019] ? psi_group_change+0xb44/0x1280 [ 151.707452][ T6019] ? perf_trace_tlb_flush+0x330/0x330 [ 151.707461][ T6019] __traceiter_tlb_flush+0x69/0xb0 [ 151.707471][ T6019] trace_tlb_flush+0xe6/0x110 [ 151.707479][ T6019] switch_mm_irqs_off+0x73a/0x9d0 [ 151.707487][ T6019] ? psi_task_switch+0x4c3/0x810 [ 151.707497][ T6019] ? switch_mm+0x140/0x140 [ 151.707506][ T6019] __schedule+0x102e/0x4350 [ 151.707516][ T6019] ? __lock_acquire+0x1305/0x7b50 [ 151.707528][ T6019] ? release_firmware_map_entry+0x190/0x190 [ 151.707537][ T6019] ? number+0xc99/0xef0 [ 151.707547][ T6019] ? preempt_schedule_irq+0xb0/0x160 [ 151.707556][ T6019] preempt_schedule_irq+0xbb/0x160 [ 151.707565][ T6019] ? __cond_resched+0xd0/0xd0 [ 151.707574][ T6019] ? rcu_is_watching+0x11/0xa0 [ 151.707583][ T6019] ? rcu_irq_exit_check_preempt+0xdb/0x200 [ 151.707592][ T6019] irqentry_exit+0x63/0x70 [ 151.707600][ T6019] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 151.707609][ T6019] RIP: 0010:check_stack_object+0x4b/0x80 [ 151.707619][ T6019] Code: e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 15 64 f7 ff 49 8b 0f 48 8d 91 00 80 00 00 4c 01 f3 49 39 ce <0f> 92 c0 48 39 da 40 0f 92 c6 40 08 c6 40 0f b6 c6 f7 d8 83 c8 02 [ 151.707627][ T6019] RSP: 0018:ffffc90002f9fb58 EFLAGS: 00000202 [ 151.707635][ T6019] RAX: 1ffff1100353f004 RBX: ffffc90002f9fc42 RCX: ffffc90002f98000 [ 151.707642][ T6019] RDX: ffffc90002fa0000 RSI: 0000000000000002 RDI: ffffc90002f9fc40 [ 151.707648][ T6019] RBP: 000000000000000f R08: 0000000000000002 R09: 1ffff1100353f005 [ 151.707654][ T6019] R10: dffffc0000000000 R11: ffffed100353f006 R12: ffffc90002f9fc40 [ 151.707661][ T6019] R13: 0000000000000001 R14: ffffc90002f9fc40 R15: ffff88801a9f8020 [ 151.707671][ T6019] ? check_stack_object+0x10/0x80 [ 151.707680][ T6019] __check_object_size+0x5c/0x410 [ 151.707688][ T6019] ? simple_read_from_buffer+0xb3/0x150 [ 151.707698][ T6019] simple_read_from_buffer+0xd3/0x150 [ 151.707707][ T6019] proc_fail_nth_read+0x1a6/0x220 [ 151.707717][ T6019] ? proc_fault_inject_write+0x310/0x310 [ 151.707727][ T6019] ? fsnotify_perm+0x254/0x560 [ 151.707737][ T6019] ? proc_fault_inject_write+0x310/0x310 [ 151.707746][ T6019] vfs_read+0x2ff/0xd50 [ 151.707754][ T6019] ? __lock_acquire+0x7b50/0x7b50 [ 151.707764][ T6019] ? kernel_read+0x1e0/0x1e0 [ 151.707775][ T6019] ? mutex_lock_nested+0x17/0x20 [ 151.707784][ T6019] ? __fdget_pos+0x2bf/0x370 [ 151.707792][ T6019] ? ksys_read+0x70/0x260 [ 151.707800][ T6019] ksys_read+0x153/0x260 [ 151.707808][ T6019] ? vfs_write+0xd70/0xd70 [ 151.707817][ T6019] ? lockdep_hardirqs_on+0x94/0x140 [ 151.707826][ T6019] do_syscall_64+0x4c/0xa0 [ 151.707833][ T6019] ? clear_bhb_loop+0x30/0x80 [ 151.707842][ T6019] ? clear_bhb_loop+0x30/0x80 [ 151.707850][ T6019] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 151.707858][ T6019] RIP: 0033:0x7f43fb03c74e [ 151.707865][ T6019] Code: Unable to access opcode bytes at RIP 0x7f43fb03c724. [ 151.707870][ T6019] RSP: 002b:00007f43fa2f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 151.707878][ T6019] RAX: ffffffffffffffda RBX: 00007f43fa2f86c0 RCX: 00007f43fb03c74e [ 151.707884][ T6019] RDX: 000000000000000f RSI: 00007f43fa2f80b0 RDI: 0000000000000007 [ 151.707890][ T6019] RBP: 00007f43fa2f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 151.707895][ T6019] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 151.707901][ T6019] R13: 000000000000000b R14: 00007f43fb21ff80 R15: 00007fffb4f5ab98 [ 151.707910][ T6019] [ 153.026715][ T6019] CPU: 0 PID: 6019 Comm: syz.2.258 Not tainted syzkaller #0 [ 153.033974][ T6019] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 153.044023][ T6019] Call Trace: [ 153.047461][ T6019] [ 153.050371][ T6019] dump_stack_lvl+0x188/0x250 [ 153.055029][ T6019] ? show_regs_print_info+0x20/0x20 [ 153.060204][ T6019] ? load_image+0x410/0x410 [ 153.064689][ T6019] ? exc_page_fault+0x88/0x100 [ 153.069432][ T6019] should_fail+0x383/0x4b0 [ 153.073860][ T6019] strncpy_from_user+0x32/0x350 [ 153.078690][ T6019] ? read_lock_is_recursive+0x10/0x10 [ 153.084043][ T6019] strncpy_from_user_nofault+0x6d/0x140 [ 153.089585][ T6019] bpf_probe_read_user_str+0x26/0x70 [ 153.094851][ T6019] bpf_prog_693483806bd7978c+0x5b/0xae8 [ 153.100376][ T6019] bpf_trace_run2+0x163/0x2e0 [ 153.105040][ T6019] ? bpf_trace_run1+0x2e0/0x2e0 [ 153.109890][ T6019] ? psi_group_change+0xb44/0x1280 [ 153.115018][ T6019] ? perf_trace_tlb_flush+0x330/0x330 [ 153.120405][ T6019] __traceiter_tlb_flush+0x69/0xb0 [ 153.125506][ T6019] trace_tlb_flush+0xe6/0x110 [ 153.130179][ T6019] switch_mm_irqs_off+0x73a/0x9d0 [ 153.135201][ T6019] ? psi_task_switch+0x4c3/0x810 [ 153.140127][ T6019] ? switch_mm+0x140/0x140 [ 153.144543][ T6019] __schedule+0x102e/0x4350 [ 153.149027][ T6019] ? __lock_acquire+0x1305/0x7b50 [ 153.154032][ T6019] ? release_firmware_map_entry+0x190/0x190 [ 153.159901][ T6019] ? number+0xc99/0xef0 [ 153.164042][ T6019] ? preempt_schedule_irq+0xb0/0x160 [ 153.169328][ T6019] preempt_schedule_irq+0xbb/0x160 [ 153.174419][ T6019] ? __cond_resched+0xd0/0xd0 [ 153.179069][ T6019] ? rcu_is_watching+0x11/0xa0 [ 153.183823][ T6019] ? rcu_irq_exit_check_preempt+0xdb/0x200 [ 153.189606][ T6019] irqentry_exit+0x63/0x70 [ 153.194091][ T6019] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 153.200170][ T6019] RIP: 0010:check_stack_object+0x4b/0x80 [ 153.205883][ T6019] Code: e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 15 64 f7 ff 49 8b 0f 48 8d 91 00 80 00 00 4c 01 f3 49 39 ce <0f> 92 c0 48 39 da 40 0f 92 c6 40 08 c6 40 0f b6 c6 f7 d8 83 c8 02 [ 153.225741][ T6019] RSP: 0018:ffffc90002f9fb58 EFLAGS: 00000202 [ 153.231807][ T6019] RAX: 1ffff1100353f004 RBX: ffffc90002f9fc42 RCX: ffffc90002f98000 [ 153.239853][ T6019] RDX: ffffc90002fa0000 RSI: 0000000000000002 RDI: ffffc90002f9fc40 [ 153.247906][ T6019] RBP: 000000000000000f R08: 0000000000000002 R09: 1ffff1100353f005 [ 153.255853][ T6019] R10: dffffc0000000000 R11: ffffed100353f006 R12: ffffc90002f9fc40 [ 153.263802][ T6019] R13: 0000000000000001 R14: ffffc90002f9fc40 R15: ffff88801a9f8020 [ 153.271757][ T6019] ? check_stack_object+0x10/0x80 [ 153.276759][ T6019] __check_object_size+0x5c/0x410 [ 153.281771][ T6019] ? simple_read_from_buffer+0xb3/0x150 [ 153.287298][ T6019] simple_read_from_buffer+0xd3/0x150 [ 153.292645][ T6019] proc_fail_nth_read+0x1a6/0x220 [ 153.297646][ T6019] ? proc_fault_inject_write+0x310/0x310 [ 153.303255][ T6019] ? fsnotify_perm+0x254/0x560 [ 153.308004][ T6019] ? proc_fault_inject_write+0x310/0x310 [ 153.313886][ T6019] vfs_read+0x2ff/0xd50 [ 153.318019][ T6019] ? __lock_acquire+0x7b50/0x7b50 [ 153.323021][ T6019] ? kernel_read+0x1e0/0x1e0 [ 153.327611][ T6019] ? mutex_lock_nested+0x17/0x20 [ 153.332624][ T6019] ? __fdget_pos+0x2bf/0x370 [ 153.337185][ T6019] ? ksys_read+0x70/0x260 [ 153.341493][ T6019] ksys_read+0x153/0x260 [ 153.345711][ T6019] ? vfs_write+0xd70/0xd70 [ 153.350099][ T6019] ? lockdep_hardirqs_on+0x94/0x140 [ 153.355355][ T6019] do_syscall_64+0x4c/0xa0 [ 153.359747][ T6019] ? clear_bhb_loop+0x30/0x80 [ 153.364396][ T6019] ? clear_bhb_loop+0x30/0x80 [ 153.369043][ T6019] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 153.374922][ T6019] RIP: 0033:0x7f43fb03c74e [ 153.379329][ T6019] Code: Unable to access opcode bytes at RIP 0x7f43fb03c724. [ 153.386752][ T6019] RSP: 002b:00007f43fa2f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 153.395151][ T6019] RAX: ffffffffffffffda RBX: 00007f43fa2f86c0 RCX: 00007f43fb03c74e [ 153.403093][ T6019] RDX: 000000000000000f RSI: 00007f43fa2f80b0 RDI: 0000000000000007 [ 153.411123][ T6019] RBP: 00007f43fa2f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 153.419071][ T6019] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 153.427016][ T6019] R13: 000000000000000b R14: 00007f43fb21ff80 R15: 00007fffb4f5ab98 [ 153.435052][ T6019] [ 153.451689][ T6012] FAULT_INJECTION: forcing a failure. [ 153.451689][ T6012] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 153.473229][ T6012] CPU: 0 PID: 6012 Comm: syz.0.257 Not tainted syzkaller #0 [ 153.480640][ T6012] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 153.490699][ T6012] Call Trace: [ 153.494069][ T6012] [ 153.497003][ T6012] dump_stack_lvl+0x188/0x250 [ 153.501690][ T6012] ? show_regs_print_info+0x20/0x20 [ 153.506893][ T6012] ? load_image+0x410/0x410 [ 153.511404][ T6012] ? rcu_is_watching+0x11/0xa0 [ 153.516174][ T6012] ? __lock_acquire+0x7b50/0x7b50 [ 153.521200][ T6012] ? rcu_is_watching+0x11/0xa0 [ 153.525955][ T6012] ? lock_release+0xb5/0x8a0 [ 153.530551][ T6012] should_fail+0x383/0x4b0 [ 153.534973][ T6012] _copy_from_user+0x2e/0x170 [ 153.539643][ T6012] kstrtouint_from_user+0xd3/0x220 [ 153.544741][ T6012] ? rcu_is_watching+0x11/0xa0 [ 153.549585][ T6012] ? kstrtol_from_user+0x2a0/0x2a0 [ 153.554773][ T6012] ? lock_acquire+0xc8/0x400 [ 153.559352][ T6012] ? __mutex_trylock_common+0x15c/0x260 [ 153.564887][ T6012] ? read_lock_is_recursive+0x10/0x10 [ 153.570249][ T6012] proc_fail_nth_write+0x8b/0x200 [ 153.575372][ T6012] ? proc_fail_nth_read+0x220/0x220 [ 153.580555][ T6012] ? common_file_perm+0x171/0x1c0 [ 153.585662][ T6012] ? preempt_count_add+0x8d/0x190 [ 153.590675][ T6012] ? proc_fail_nth_read+0x220/0x220 [ 153.595869][ T6012] vfs_write+0x304/0xd70 [ 153.600107][ T6012] ? file_end_write+0x250/0x250 [ 153.604949][ T6012] ? mutex_lock_nested+0x17/0x20 [ 153.609875][ T6012] ? __fdget_pos+0x2bf/0x370 [ 153.614538][ T6012] ? ksys_write+0x70/0x260 [ 153.618943][ T6012] ksys_write+0x153/0x260 [ 153.623261][ T6012] ? __ia32_sys_read+0x80/0x80 [ 153.628097][ T6012] ? rcu_is_watching+0x11/0xa0 [ 153.632850][ T6012] do_syscall_64+0x4c/0xa0 [ 153.637251][ T6012] ? clear_bhb_loop+0x30/0x80 [ 153.641914][ T6012] ? clear_bhb_loop+0x30/0x80 [ 153.646575][ T6012] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 153.652455][ T6012] RIP: 0033:0x7f0a25ce074e [ 153.656860][ T6012] 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 [ 153.676452][ T6012] RSP: 002b:00007f0a24f9bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 153.684853][ T6012] RAX: ffffffffffffffda RBX: 00007f0a24f9c6c0 RCX: 00007f0a25ce074e [ 153.692808][ T6012] RDX: 0000000000000001 RSI: 00007f0a24f9c0b0 RDI: 0000000000000006 [ 153.700768][ T6012] RBP: 00007f0a24f9c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 153.708730][ T6012] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 153.716701][ T6012] R13: 000000000000000b R14: 00007f0a25ec3f80 R15: 00007fff8b3f2f08 [ 153.724668][ T6012] [ 153.727673][ T6017] CPU: 1 PID: 6017 Comm: syz.3.259 Not tainted syzkaller #0 [ 153.734960][ T6017] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 153.745118][ T6017] Call Trace: [ 153.748389][ T6017] [ 153.751307][ T6017] dump_stack_lvl+0x188/0x250 [ 153.755974][ T6017] ? show_regs_print_info+0x20/0x20 [ 153.761154][ T6017] ? load_image+0x410/0x410 [ 153.765641][ T6017] ? __lock_acquire+0x7b50/0x7b50 [ 153.770653][ T6017] should_fail+0x383/0x4b0 [ 153.775050][ T6017] _copy_from_user+0x2e/0x170 [ 153.779817][ T6017] kstrtouint_from_user+0xd3/0x220 [ 153.784911][ T6017] ? kstrtol_from_user+0x2a0/0x2a0 [ 153.790004][ T6017] proc_fail_nth_write+0x8b/0x200 [ 153.795008][ T6017] ? proc_fail_nth_read+0x220/0x220 [ 153.800185][ T6017] ? common_file_perm+0x171/0x1c0 [ 153.805209][ T6017] ? proc_fail_nth_read+0x220/0x220 [ 153.810417][ T6017] vfs_write+0x304/0xd70 [ 153.814681][ T6017] ? file_end_write+0x250/0x250 [ 153.819525][ T6017] ? mutex_lock_nested+0x17/0x20 [ 153.824560][ T6017] ? __fdget_pos+0x2bf/0x370 [ 153.829133][ T6017] ? ksys_write+0x70/0x260 [ 153.833645][ T6017] ksys_write+0x153/0x260 [ 153.838044][ T6017] ? __ia32_sys_read+0x80/0x80 [ 153.842790][ T6017] ? lockdep_hardirqs_on+0x94/0x140 [ 153.847999][ T6017] do_syscall_64+0x4c/0xa0 [ 153.852404][ T6017] ? clear_bhb_loop+0x30/0x80 [ 153.857070][ T6017] ? clear_bhb_loop+0x30/0x80 [ 153.861734][ T6017] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 153.867720][ T6017] RIP: 0033:0x7f496b98e74e [ 153.872137][ T6017] 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 [ 153.891831][ T6017] RSP: 002b:00007f496ac49ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 153.900235][ T6017] RAX: ffffffffffffffda RBX: 00007f496ac4a6c0 RCX: 00007f496b98e74e [ 153.908190][ T6017] RDX: 0000000000000001 RSI: 00007f496ac4a0b0 RDI: 0000000000000007 [ 153.916143][ T6017] RBP: 00007f496ac4a0a0 R08: 0000000000000000 R09: 0000000000000000 [ 153.924269][ T6017] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 153.932525][ T6017] R13: 000000000000000b R14: 00007f496bb71f80 R15: 00007ffc8ba6e9a8 [ 153.940516][ T6017] [ 154.017594][ T6033] FAULT_INJECTION: forcing a failure. [ 154.017594][ T6033] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 154.031938][ T6032] FAULT_INJECTION: forcing a failure. [ 154.031938][ T6032] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 154.046824][ T6037] FAULT_INJECTION: forcing a failure. [ 154.046824][ T6037] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 154.048384][ T6034] FAULT_INJECTION: forcing a failure. [ 154.048384][ T6034] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 154.076935][ T6033] CPU: 1 PID: 6033 Comm: syz.1.262 Not tainted syzkaller #0 [ 154.084258][ T6033] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 154.094366][ T6033] Call Trace: [ 154.097653][ T6033] [ 154.100579][ T6033] dump_stack_lvl+0x188/0x250 [ 154.105261][ T6033] ? show_regs_print_info+0x20/0x20 [ 154.110485][ T6033] ? load_image+0x410/0x410 [ 154.115027][ T6033] ? rcu_is_watching+0x11/0xa0 [ 154.119883][ T6033] ? __lock_acquire+0x7b50/0x7b50 [ 154.124923][ T6033] ? rcu_is_watching+0x11/0xa0 [ 154.129706][ T6033] ? lock_release+0xb5/0x8a0 [ 154.134299][ T6033] should_fail+0x383/0x4b0 [ 154.138711][ T6033] _copy_from_user+0x2e/0x170 [ 154.143488][ T6033] kstrtouint_from_user+0xd3/0x220 [ 154.148600][ T6033] ? rcu_is_watching+0x11/0xa0 [ 154.153359][ T6033] ? kstrtol_from_user+0x2a0/0x2a0 [ 154.158461][ T6033] ? lock_acquire+0xc8/0x400 [ 154.163056][ T6033] ? __mutex_trylock_common+0x15c/0x260 [ 154.167136][ T6039] FAULT_INJECTION: forcing a failure. [ 154.167136][ T6039] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 154.168616][ T6033] ? read_lock_is_recursive+0x10/0x10 [ 154.186964][ T6033] proc_fail_nth_write+0x8b/0x200 [ 154.192083][ T6033] ? proc_fail_nth_read+0x220/0x220 [ 154.197455][ T6033] ? common_file_perm+0x171/0x1c0 [ 154.202471][ T6033] ? preempt_count_add+0x8d/0x190 [ 154.207487][ T6033] ? proc_fail_nth_read+0x220/0x220 [ 154.212683][ T6033] vfs_write+0x304/0xd70 [ 154.216929][ T6033] ? file_end_write+0x250/0x250 [ 154.221802][ T6033] ? mutex_lock_nested+0x17/0x20 [ 154.226743][ T6033] ? __fdget_pos+0x2bf/0x370 [ 154.231427][ T6033] ? ksys_write+0x70/0x260 [ 154.235849][ T6033] ksys_write+0x153/0x260 [ 154.240176][ T6033] ? __ia32_sys_read+0x80/0x80 [ 154.244945][ T6033] ? rcu_is_watching+0x11/0xa0 [ 154.249714][ T6033] do_syscall_64+0x4c/0xa0 [ 154.254129][ T6033] ? clear_bhb_loop+0x30/0x80 [ 154.258798][ T6033] ? clear_bhb_loop+0x30/0x80 [ 154.263471][ T6033] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 154.269450][ T6033] RIP: 0033:0x7f3258da874e [ 154.273855][ T6033] 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 [ 154.293452][ T6033] RSP: 002b:00007f3258063ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 154.302210][ T6033] RAX: ffffffffffffffda RBX: 00007f32580646c0 RCX: 00007f3258da874e [ 154.310171][ T6033] RDX: 0000000000000001 RSI: 00007f32580640b0 RDI: 0000000000000007 [ 154.318154][ T6033] RBP: 00007f32580640a0 R08: 0000000000000000 R09: 0000000000000000 [ 154.326117][ T6033] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 154.334078][ T6033] R13: 000000000000000b R14: 00007f3258f8bf80 R15: 00007ffdf34c27f8 [ 154.342051][ T6033] [ 154.345127][ T6037] CPU: 0 PID: 6037 Comm: syz.3.264 Not tainted syzkaller #0 [ 154.352418][ T6037] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 154.362566][ T6037] Call Trace: [ 154.365846][ T6037] [ 154.368780][ T6037] dump_stack_lvl+0x188/0x250 [ 154.373489][ T6037] ? show_regs_print_info+0x20/0x20 [ 154.378698][ T6037] ? load_image+0x410/0x410 [ 154.383208][ T6037] ? rcu_is_watching+0x11/0xa0 [ 154.387976][ T6037] ? __lock_acquire+0x7b50/0x7b50 [ 154.392996][ T6037] ? rcu_is_watching+0x11/0xa0 [ 154.397843][ T6037] ? lock_release+0xb5/0x8a0 [ 154.402604][ T6037] should_fail+0x383/0x4b0 [ 154.407191][ T6037] _copy_from_user+0x2e/0x170 [ 154.411888][ T6037] kstrtouint_from_user+0xd3/0x220 [ 154.416998][ T6037] ? rcu_is_watching+0x11/0xa0 [ 154.421760][ T6037] ? kstrtol_from_user+0x2a0/0x2a0 [ 154.426861][ T6037] ? lock_acquire+0xc8/0x400 [ 154.431440][ T6037] ? __mutex_trylock_common+0x15c/0x260 [ 154.436975][ T6037] ? read_lock_is_recursive+0x10/0x10 [ 154.442354][ T6037] proc_fail_nth_write+0x8b/0x200 [ 154.447377][ T6037] ? proc_fail_nth_read+0x220/0x220 [ 154.452581][ T6037] ? common_file_perm+0x171/0x1c0 [ 154.457592][ T6037] ? preempt_count_add+0x8d/0x190 [ 154.462619][ T6037] ? proc_fail_nth_read+0x220/0x220 [ 154.467809][ T6037] vfs_write+0x304/0xd70 [ 154.472047][ T6037] ? file_end_write+0x250/0x250 [ 154.476894][ T6037] ? mutex_lock_nested+0x17/0x20 [ 154.481826][ T6037] ? __fdget_pos+0x2bf/0x370 [ 154.486404][ T6037] ? ksys_write+0x70/0x260 [ 154.490831][ T6037] ksys_write+0x153/0x260 [ 154.495164][ T6037] ? __ia32_sys_read+0x80/0x80 [ 154.499929][ T6037] ? rcu_is_watching+0x11/0xa0 [ 154.504689][ T6037] do_syscall_64+0x4c/0xa0 [ 154.509103][ T6037] ? clear_bhb_loop+0x30/0x80 [ 154.513871][ T6037] ? clear_bhb_loop+0x30/0x80 [ 154.518536][ T6037] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 154.524428][ T6037] RIP: 0033:0x7f496b98e74e [ 154.528832][ T6037] 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 [ 154.548438][ T6037] RSP: 002b:00007f496ac49ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 154.556847][ T6037] RAX: ffffffffffffffda RBX: 00007f496ac4a6c0 RCX: 00007f496b98e74e [ 154.564802][ T6037] RDX: 0000000000000001 RSI: 00007f496ac4a0b0 RDI: 0000000000000007 [ 154.572946][ T6037] RBP: 00007f496ac4a0a0 R08: 0000000000000000 R09: 0000000000000000 [ 154.580909][ T6037] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 154.588869][ T6037] R13: 000000000000000b R14: 00007f496bb71f80 R15: 00007ffc8ba6e9a8 [ 154.596831][ T6037] [ 154.601189][ T6034] CPU: 1 PID: 6034 Comm: syz.4.261 Not tainted syzkaller #0 [ 154.608498][ T6034] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 154.618550][ T6034] Call Trace: [ 154.621825][ T6034] [ 154.624778][ T6034] dump_stack_lvl+0x188/0x250 [ 154.629452][ T6034] ? show_regs_print_info+0x20/0x20 [ 154.634791][ T6034] ? load_image+0x410/0x410 [ 154.639297][ T6034] ? rcu_is_watching+0x11/0xa0 [ 154.644062][ T6034] ? __lock_acquire+0x7b50/0x7b50 [ 154.649077][ T6034] ? rcu_is_watching+0x11/0xa0 [ 154.653842][ T6034] ? lock_release+0xb5/0x8a0 [ 154.658457][ T6034] should_fail+0x383/0x4b0 [ 154.662875][ T6034] _copy_from_user+0x2e/0x170 [ 154.667554][ T6034] kstrtouint_from_user+0xd3/0x220 [ 154.672662][ T6034] ? rcu_is_watching+0x11/0xa0 [ 154.677434][ T6034] ? kstrtol_from_user+0x2a0/0x2a0 [ 154.682534][ T6034] ? lock_acquire+0xc8/0x400 [ 154.687130][ T6034] ? __mutex_trylock_common+0x15c/0x260 [ 154.692667][ T6034] ? read_lock_is_recursive+0x10/0x10 [ 154.698040][ T6034] proc_fail_nth_write+0x8b/0x200 [ 154.703072][ T6034] ? proc_fail_nth_read+0x220/0x220 [ 154.708263][ T6034] ? common_file_perm+0x171/0x1c0 [ 154.713281][ T6034] ? preempt_count_add+0x8d/0x190 [ 154.718301][ T6034] ? proc_fail_nth_read+0x220/0x220 [ 154.723492][ T6034] vfs_write+0x304/0xd70 [ 154.727731][ T6034] ? file_end_write+0x250/0x250 [ 154.732578][ T6034] ? mutex_lock_nested+0x17/0x20 [ 154.737508][ T6034] ? __fdget_pos+0x2bf/0x370 [ 154.742084][ T6034] ? ksys_write+0x70/0x260 [ 154.746664][ T6034] ksys_write+0x153/0x260 [ 154.750999][ T6034] ? __ia32_sys_read+0x80/0x80 [ 154.755858][ T6034] ? rcu_is_watching+0x11/0xa0 [ 154.760625][ T6034] do_syscall_64+0x4c/0xa0 [ 154.765029][ T6034] ? clear_bhb_loop+0x30/0x80 [ 154.770047][ T6034] ? clear_bhb_loop+0x30/0x80 [ 154.774727][ T6034] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 154.780623][ T6034] RIP: 0033:0x7f8c3f13c74e [ 154.785036][ T6034] 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 [ 154.804641][ T6034] RSP: 002b:00007f8c3e3f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 154.813056][ T6034] RAX: ffffffffffffffda RBX: 00007f8c3e3f86c0 RCX: 00007f8c3f13c74e [ 154.821024][ T6034] RDX: 0000000000000001 RSI: 00007f8c3e3f80b0 RDI: 0000000000000007 [ 154.828995][ T6034] RBP: 00007f8c3e3f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 154.837219][ T6034] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 154.845305][ T6034] R13: 000000000000000b R14: 00007f8c3f31ff80 R15: 00007ffc85ff7248 [ 154.853279][ T6034] [ 154.860294][ T6032] CPU: 0 PID: 6032 Comm: syz.0.260 Not tainted syzkaller #0 [ 154.867623][ T6032] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 154.877676][ T6032] Call Trace: [ 154.880958][ T6032] [ 154.883996][ T6032] dump_stack_lvl+0x188/0x250 [ 154.888685][ T6032] ? show_regs_print_info+0x20/0x20 [ 154.893984][ T6032] ? load_image+0x410/0x410 [ 154.898486][ T6032] ? rcu_is_watching+0x11/0xa0 [ 154.903249][ T6032] ? __lock_acquire+0x7b50/0x7b50 [ 154.908272][ T6032] ? rcu_is_watching+0x11/0xa0 [ 154.913048][ T6032] ? lock_release+0xb5/0x8a0 [ 154.917642][ T6032] should_fail+0x383/0x4b0 [ 154.922052][ T6032] _copy_from_user+0x2e/0x170 [ 154.926804][ T6032] kstrtouint_from_user+0xd3/0x220 [ 154.931901][ T6032] ? rcu_is_watching+0x11/0xa0 [ 154.936658][ T6032] ? kstrtol_from_user+0x2a0/0x2a0 [ 154.941770][ T6032] ? lock_acquire+0xc8/0x400 [ 154.946347][ T6032] ? __mutex_trylock_common+0x15c/0x260 [ 154.951876][ T6032] ? read_lock_is_recursive+0x10/0x10 [ 154.957237][ T6032] proc_fail_nth_write+0x8b/0x200 [ 154.962248][ T6032] ? proc_fail_nth_read+0x220/0x220 [ 154.967443][ T6032] ? common_file_perm+0x171/0x1c0 [ 154.972446][ T6032] ? preempt_count_add+0x8d/0x190 [ 154.977453][ T6032] ? proc_fail_nth_read+0x220/0x220 [ 154.982632][ T6032] vfs_write+0x304/0xd70 [ 154.986860][ T6032] ? file_end_write+0x250/0x250 [ 154.991711][ T6032] ? mutex_lock_nested+0x17/0x20 [ 154.996634][ T6032] ? __fdget_pos+0x2bf/0x370 [ 155.001220][ T6032] ? ksys_write+0x70/0x260 [ 155.005618][ T6032] ksys_write+0x153/0x260 [ 155.010016][ T6032] ? __ia32_sys_read+0x80/0x80 [ 155.014788][ T6032] ? rcu_is_watching+0x11/0xa0 [ 155.019552][ T6032] do_syscall_64+0x4c/0xa0 [ 155.023951][ T6032] ? clear_bhb_loop+0x30/0x80 [ 155.028615][ T6032] ? clear_bhb_loop+0x30/0x80 [ 155.033270][ T6032] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 155.039145][ T6032] RIP: 0033:0x7f0a25ce074e [ 155.043630][ T6032] 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 [ 155.063321][ T6032] RSP: 002b:00007f0a24f9bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 155.071719][ T6032] RAX: ffffffffffffffda RBX: 00007f0a24f9c6c0 RCX: 00007f0a25ce074e [ 155.079769][ T6032] RDX: 0000000000000001 RSI: 00007f0a24f9c0b0 RDI: 0000000000000007 [ 155.087719][ T6032] RBP: 00007f0a24f9c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 155.095765][ T6032] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 155.103712][ T6032] R13: 000000000000000b R14: 00007f0a25ec3f80 R15: 00007fff8b3f2f08 [ 155.111792][ T6032] [ 155.128400][ T6039] CPU: 0 PID: 6039 Comm: syz.2.263 Not tainted syzkaller #0 [ 155.135751][ T6039] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 155.145889][ T6039] Call Trace: [ 155.149169][ T6039] [ 155.152095][ T6039] dump_stack_lvl+0x188/0x250 [ 155.156784][ T6039] ? show_regs_print_info+0x20/0x20 [ 155.161976][ T6039] ? load_image+0x410/0x410 [ 155.166552][ T6039] ? rcu_is_watching+0x11/0xa0 [ 155.171298][ T6039] ? __lock_acquire+0x7b50/0x7b50 [ 155.176310][ T6039] ? rcu_is_watching+0x11/0xa0 [ 155.181056][ T6039] ? lock_release+0xb5/0x8a0 [ 155.185717][ T6039] should_fail+0x383/0x4b0 [ 155.190130][ T6039] _copy_from_user+0x2e/0x170 [ 155.194791][ T6039] kstrtouint_from_user+0xd3/0x220 [ 155.199881][ T6039] ? rcu_is_watching+0x11/0xa0 [ 155.204626][ T6039] ? kstrtol_from_user+0x2a0/0x2a0 [ 155.209725][ T6039] ? lock_acquire+0xc8/0x400 [ 155.214649][ T6039] ? __mutex_trylock_common+0x15c/0x260 [ 155.220262][ T6039] ? read_lock_is_recursive+0x10/0x10 [ 155.225620][ T6039] proc_fail_nth_write+0x8b/0x200 [ 155.230640][ T6039] ? proc_fail_nth_read+0x220/0x220 [ 155.236063][ T6039] ? common_file_perm+0x171/0x1c0 [ 155.241417][ T6039] ? preempt_count_add+0x8d/0x190 [ 155.246517][ T6039] ? proc_fail_nth_read+0x220/0x220 [ 155.251703][ T6039] vfs_write+0x304/0xd70 [ 155.256015][ T6039] ? file_end_write+0x250/0x250 [ 155.260861][ T6039] ? mutex_lock_nested+0x17/0x20 [ 155.265807][ T6039] ? __fdget_pos+0x2bf/0x370 [ 155.270387][ T6039] ? ksys_write+0x70/0x260 [ 155.274792][ T6039] ksys_write+0x153/0x260 [ 155.279111][ T6039] ? __ia32_sys_read+0x80/0x80 [ 155.283858][ T6039] ? rcu_is_watching+0x11/0xa0 [ 155.288623][ T6039] do_syscall_64+0x4c/0xa0 [ 155.293149][ T6039] ? clear_bhb_loop+0x30/0x80 [ 155.297822][ T6039] ? clear_bhb_loop+0x30/0x80 [ 155.302495][ T6039] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 155.308373][ T6039] RIP: 0033:0x7f43fb03c74e [ 155.312796][ T6039] 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 [ 155.332482][ T6039] RSP: 002b:00007f43fa2d6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 155.340987][ T6039] RAX: ffffffffffffffda RBX: 00007f43fa2d76c0 RCX: 00007f43fb03c74e [ 155.349116][ T6039] RDX: 0000000000000001 RSI: 00007f43fa2d70b0 RDI: 0000000000000005 [ 155.357069][ T6039] RBP: 00007f43fa2d70a0 R08: 0000000000000000 R09: 0000000000000000 [ 155.365066][ T6039] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 155.373046][ T6039] R13: 000000000000006e R14: 00007f43fb220058 R15: 00007fffb4f5ab98 [ 155.381015][ T6039] [ 155.390529][ T6051] FAULT_INJECTION: forcing a failure. [ 155.390529][ T6051] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 155.401176][ T6047] FAULT_INJECTION: forcing a failure. [ 155.401176][ T6047] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 155.429148][ T6051] CPU: 1 PID: 6051 Comm: syz.3.266 Not tainted syzkaller #0 [ 155.436467][ T6051] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 155.446704][ T6051] Call Trace: [ 155.449762][ T6060] FAULT_INJECTION: forcing a failure. [ 155.449762][ T6060] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 155.450012][ T6051] [ 155.466101][ T6051] dump_stack_lvl+0x188/0x250 [ 155.470785][ T6051] ? show_regs_print_info+0x20/0x20 [ 155.476245][ T6051] ? load_image+0x410/0x410 [ 155.480750][ T6051] ? rcu_is_watching+0x11/0xa0 [ 155.485567][ T6051] ? __lock_acquire+0x7b50/0x7b50 [ 155.490601][ T6051] ? rcu_is_watching+0x11/0xa0 [ 155.495360][ T6051] ? lock_release+0xb5/0x8a0 [ 155.499940][ T6051] should_fail+0x383/0x4b0 [ 155.504351][ T6051] _copy_from_user+0x2e/0x170 [ 155.509018][ T6051] kstrtouint_from_user+0xd3/0x220 [ 155.514114][ T6051] ? rcu_is_watching+0x11/0xa0 [ 155.518863][ T6051] ? kstrtol_from_user+0x2a0/0x2a0 [ 155.523963][ T6051] ? lock_acquire+0xc8/0x400 [ 155.528549][ T6051] ? __mutex_trylock_common+0x15c/0x260 [ 155.534270][ T6051] ? read_lock_is_recursive+0x10/0x10 [ 155.539753][ T6051] proc_fail_nth_write+0x8b/0x200 [ 155.544862][ T6051] ? proc_fail_nth_read+0x220/0x220 [ 155.550056][ T6051] ? common_file_perm+0x171/0x1c0 [ 155.555090][ T6051] ? preempt_count_add+0x8d/0x190 [ 155.560274][ T6051] ? proc_fail_nth_read+0x220/0x220 [ 155.565635][ T6051] vfs_write+0x304/0xd70 [ 155.569872][ T6051] ? file_end_write+0x250/0x250 [ 155.574719][ T6051] ? mutex_lock_nested+0x17/0x20 [ 155.579774][ T6051] ? __fdget_pos+0x2bf/0x370 [ 155.584377][ T6051] ? ksys_write+0x70/0x260 [ 155.588869][ T6051] ksys_write+0x153/0x260 [ 155.593188][ T6051] ? __ia32_sys_read+0x80/0x80 [ 155.597942][ T6051] ? rcu_is_watching+0x11/0xa0 [ 155.602697][ T6051] do_syscall_64+0x4c/0xa0 [ 155.607103][ T6051] ? clear_bhb_loop+0x30/0x80 [ 155.611807][ T6051] ? clear_bhb_loop+0x30/0x80 [ 155.616473][ T6051] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 155.622356][ T6051] RIP: 0033:0x7f496b98e74e [ 155.626758][ T6051] 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 [ 155.646366][ T6051] RSP: 002b:00007f496ac28ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 155.654772][ T6051] RAX: ffffffffffffffda RBX: 00007f496ac296c0 RCX: 00007f496b98e74e [ 155.663318][ T6051] RDX: 0000000000000001 RSI: 00007f496ac290b0 RDI: 0000000000000005 [ 155.671298][ T6051] RBP: 00007f496ac290a0 R08: 0000000000000000 R09: 0000000000000000 [ 155.679265][ T6051] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 155.680114][ T6065] FAULT_INJECTION: forcing a failure. [ 155.680114][ T6065] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 155.687316][ T6051] R13: 000000000000006e R14: 00007f496bb72058 R15: 00007ffc8ba6e9a8 [ 155.687336][ T6051] [ 155.690104][ T6066] FAULT_INJECTION: forcing a failure. [ 155.690104][ T6066] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 155.702316][ T6047] CPU: 0 PID: 6047 Comm: syz.1.265 Not tainted syzkaller #0 [ 155.731783][ T6047] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 155.741827][ T6047] Call Trace: [ 155.745093][ T6047] [ 155.748012][ T6047] dump_stack_lvl+0x188/0x250 [ 155.752689][ T6047] ? show_regs_print_info+0x20/0x20 [ 155.757882][ T6047] ? load_image+0x410/0x410 [ 155.762429][ T6047] ? rcu_is_watching+0x11/0xa0 [ 155.767180][ T6047] ? __lock_acquire+0x7b50/0x7b50 [ 155.772190][ T6047] ? rcu_is_watching+0x11/0xa0 [ 155.776940][ T6047] ? lock_release+0xb5/0x8a0 [ 155.781528][ T6047] should_fail+0x383/0x4b0 [ 155.785942][ T6047] _copy_from_user+0x2e/0x170 [ 155.790622][ T6047] kstrtouint_from_user+0xd3/0x220 [ 155.795858][ T6047] ? rcu_is_watching+0x11/0xa0 [ 155.800616][ T6047] ? kstrtol_from_user+0x2a0/0x2a0 [ 155.805719][ T6047] ? lock_acquire+0xc8/0x400 [ 155.810305][ T6047] ? __mutex_trylock_common+0x15c/0x260 [ 155.815932][ T6047] ? read_lock_is_recursive+0x10/0x10 [ 155.821645][ T6047] proc_fail_nth_write+0x8b/0x200 [ 155.826659][ T6047] ? proc_fail_nth_read+0x220/0x220 [ 155.831939][ T6047] ? common_file_perm+0x171/0x1c0 [ 155.836949][ T6047] ? preempt_count_add+0x8d/0x190 [ 155.842145][ T6047] ? proc_fail_nth_read+0x220/0x220 [ 155.847331][ T6047] vfs_write+0x304/0xd70 [ 155.851591][ T6047] ? file_end_write+0x250/0x250 [ 155.856461][ T6047] ? mutex_lock_nested+0x17/0x20 [ 155.861408][ T6047] ? __fdget_pos+0x2bf/0x370 [ 155.865988][ T6047] ? ksys_write+0x70/0x260 [ 155.870664][ T6047] ksys_write+0x153/0x260 [ 155.875004][ T6047] ? __ia32_sys_read+0x80/0x80 [ 155.879852][ T6047] ? rcu_is_watching+0x11/0xa0 [ 155.884603][ T6047] do_syscall_64+0x4c/0xa0 [ 155.889011][ T6047] ? clear_bhb_loop+0x30/0x80 [ 155.893857][ T6047] ? clear_bhb_loop+0x30/0x80 [ 155.898534][ T6047] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 155.904424][ T6047] RIP: 0033:0x7f3258da874e [ 155.908831][ T6047] 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 [ 155.928608][ T6047] RSP: 002b:00007f3258063ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 155.937011][ T6047] RAX: ffffffffffffffda RBX: 00007f32580646c0 RCX: 00007f3258da874e [ 155.944965][ T6047] RDX: 0000000000000001 RSI: 00007f32580640b0 RDI: 0000000000000006 [ 155.952920][ T6047] RBP: 00007f32580640a0 R08: 0000000000000000 R09: 0000000000000000 [ 155.960963][ T6047] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 155.968921][ T6047] R13: 000000000000000b R14: 00007f3258f8bf80 R15: 00007ffdf34c27f8 [ 155.976886][ T6047] [ 155.985723][ T6060] CPU: 1 PID: 6060 Comm: syz.0.267 Not tainted syzkaller #0 [ 155.993038][ T6060] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 156.003100][ T6060] Call Trace: [ 156.006468][ T6060] [ 156.009403][ T6060] dump_stack_lvl+0x188/0x250 [ 156.014092][ T6060] ? show_regs_print_info+0x20/0x20 [ 156.019299][ T6060] ? load_image+0x410/0x410 [ 156.023806][ T6060] ? rcu_is_watching+0x11/0xa0 [ 156.028575][ T6060] ? __lock_acquire+0x7b50/0x7b50 [ 156.033601][ T6060] ? rcu_is_watching+0x11/0xa0 [ 156.038369][ T6060] ? lock_release+0xb5/0x8a0 [ 156.042975][ T6060] should_fail+0x383/0x4b0 [ 156.047485][ T6060] _copy_from_user+0x2e/0x170 [ 156.052166][ T6060] kstrtouint_from_user+0xd3/0x220 [ 156.057282][ T6060] ? rcu_is_watching+0x11/0xa0 [ 156.062130][ T6060] ? kstrtol_from_user+0x2a0/0x2a0 [ 156.067242][ T6060] ? lock_acquire+0xc8/0x400 [ 156.071831][ T6060] ? __mutex_trylock_common+0x15c/0x260 [ 156.077374][ T6060] ? read_lock_is_recursive+0x10/0x10 [ 156.082760][ T6060] proc_fail_nth_write+0x8b/0x200 [ 156.087971][ T6060] ? proc_fail_nth_read+0x220/0x220 [ 156.093172][ T6060] ? common_file_perm+0x171/0x1c0 [ 156.098200][ T6060] ? preempt_count_add+0x8d/0x190 [ 156.103228][ T6060] ? proc_fail_nth_read+0x220/0x220 [ 156.108430][ T6060] vfs_write+0x304/0xd70 [ 156.112700][ T6060] ? file_end_write+0x250/0x250 [ 156.117559][ T6060] ? mutex_lock_nested+0x17/0x20 [ 156.122504][ T6060] ? __fdget_pos+0x2bf/0x370 [ 156.127089][ T6060] ? ksys_write+0x70/0x260 [ 156.131502][ T6060] ksys_write+0x153/0x260 [ 156.135841][ T6060] ? __ia32_sys_read+0x80/0x80 [ 156.140607][ T6060] ? rcu_is_watching+0x11/0xa0 [ 156.145370][ T6060] do_syscall_64+0x4c/0xa0 [ 156.149787][ T6060] ? clear_bhb_loop+0x30/0x80 [ 156.154460][ T6060] ? clear_bhb_loop+0x30/0x80 [ 156.159138][ T6060] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 156.165026][ T6060] RIP: 0033:0x7f0a25ce074e [ 156.169439][ T6060] 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 [ 156.189042][ T6060] RSP: 002b:00007f0a24f7aff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 156.197451][ T6060] RAX: ffffffffffffffda RBX: 00007f0a24f7b6c0 RCX: 00007f0a25ce074e [ 156.205416][ T6060] RDX: 0000000000000001 RSI: 00007f0a24f7b0b0 RDI: 0000000000000005 [ 156.213382][ T6060] RBP: 00007f0a24f7b0a0 R08: 0000000000000000 R09: 0000000000000000 [ 156.221527][ T6060] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 156.229577][ T6060] R13: 000000000000006e R14: 00007f0a25ec4058 R15: 00007fff8b3f2f08 [ 156.237553][ T6060] [ 156.240570][ T6065] CPU: 0 PID: 6065 Comm: syz.4.268 Not tainted syzkaller #0 [ 156.247888][ T6065] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 156.258031][ T6065] Call Trace: [ 156.261302][ T6065] [ 156.264235][ T6065] dump_stack_lvl+0x188/0x250 [ 156.268900][ T6065] ? show_regs_print_info+0x20/0x20 [ 156.274081][ T6065] ? load_image+0x410/0x410 [ 156.278562][ T6065] ? rcu_is_watching+0x11/0xa0 [ 156.283310][ T6065] ? __lock_acquire+0x7b50/0x7b50 [ 156.288350][ T6065] ? rcu_is_watching+0x11/0xa0 [ 156.293093][ T6065] ? lock_release+0xb5/0x8a0 [ 156.297666][ T6065] should_fail+0x383/0x4b0 [ 156.302073][ T6065] _copy_from_user+0x2e/0x170 [ 156.306736][ T6065] kstrtouint_from_user+0xd3/0x220 [ 156.311829][ T6065] ? rcu_is_watching+0x11/0xa0 [ 156.316584][ T6065] ? kstrtol_from_user+0x2a0/0x2a0 [ 156.321674][ T6065] ? lock_acquire+0xc8/0x400 [ 156.326251][ T6065] ? __mutex_trylock_common+0x15c/0x260 [ 156.331781][ T6065] ? read_lock_is_recursive+0x10/0x10 [ 156.337134][ T6065] proc_fail_nth_write+0x8b/0x200 [ 156.342143][ T6065] ? proc_fail_nth_read+0x220/0x220 [ 156.347322][ T6065] ? common_file_perm+0x171/0x1c0 [ 156.352323][ T6065] ? preempt_count_add+0x8d/0x190 [ 156.357326][ T6065] ? proc_fail_nth_read+0x220/0x220 [ 156.362504][ T6065] vfs_write+0x304/0xd70 [ 156.366725][ T6065] ? file_end_write+0x250/0x250 [ 156.371557][ T6065] ? mutex_lock_nested+0x17/0x20 [ 156.376475][ T6065] ? __fdget_pos+0x2bf/0x370 [ 156.381132][ T6065] ? ksys_write+0x70/0x260 [ 156.385526][ T6065] ksys_write+0x153/0x260 [ 156.389834][ T6065] ? __ia32_sys_read+0x80/0x80 [ 156.394580][ T6065] ? rcu_is_watching+0x11/0xa0 [ 156.399326][ T6065] do_syscall_64+0x4c/0xa0 [ 156.403720][ T6065] ? clear_bhb_loop+0x30/0x80 [ 156.408375][ T6065] ? clear_bhb_loop+0x30/0x80 [ 156.413030][ T6065] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 156.418913][ T6065] RIP: 0033:0x7f8c3f13c74e [ 156.423314][ T6065] 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 [ 156.443043][ T6065] RSP: 002b:00007f8c3e3d6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 156.451447][ T6065] RAX: ffffffffffffffda RBX: 00007f8c3e3d76c0 RCX: 00007f8c3f13c74e [ 156.459470][ T6065] RDX: 0000000000000001 RSI: 00007f8c3e3d70b0 RDI: 0000000000000004 [ 156.467426][ T6065] RBP: 00007f8c3e3d70a0 R08: 0000000000000000 R09: 0000000000000000 [ 156.475571][ T6065] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 156.483525][ T6065] R13: 000000000000006e R14: 00007f8c3f320058 R15: 00007ffc85ff7248 [ 156.491657][ T6065] [ 156.510012][ T6066] CPU: 1 PID: 6066 Comm: syz.2.269 Not tainted syzkaller #0 [ 156.517336][ T6066] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 156.527423][ T6066] Call Trace: [ 156.530706][ T6066] [ 156.533638][ T6066] dump_stack_lvl+0x188/0x250 [ 156.538326][ T6066] ? show_regs_print_info+0x20/0x20 [ 156.543538][ T6066] ? load_image+0x410/0x410 [ 156.548046][ T6066] ? rcu_is_watching+0x11/0xa0 [ 156.552825][ T6066] ? __lock_acquire+0x7b50/0x7b50 [ 156.557857][ T6066] ? rcu_is_watching+0x11/0xa0 [ 156.559555][ T6077] FAULT_INJECTION: forcing a failure. [ 156.559555][ T6077] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 156.562657][ T6066] ? lock_release+0xb5/0x8a0 [ 156.580417][ T6066] should_fail+0x383/0x4b0 [ 156.584846][ T6066] _copy_from_user+0x2e/0x170 [ 156.589539][ T6066] kstrtouint_from_user+0xd3/0x220 [ 156.594646][ T6066] ? rcu_is_watching+0x11/0xa0 [ 156.599406][ T6066] ? kstrtol_from_user+0x2a0/0x2a0 [ 156.604522][ T6066] ? lock_acquire+0xc8/0x400 [ 156.609119][ T6066] ? __mutex_trylock_common+0x15c/0x260 [ 156.614673][ T6066] ? read_lock_is_recursive+0x10/0x10 [ 156.620046][ T6066] proc_fail_nth_write+0x8b/0x200 [ 156.625079][ T6066] ? proc_fail_nth_read+0x220/0x220 [ 156.630276][ T6066] ? common_file_perm+0x171/0x1c0 [ 156.635305][ T6066] ? preempt_count_add+0x8d/0x190 [ 156.640416][ T6066] ? proc_fail_nth_read+0x220/0x220 [ 156.645616][ T6066] vfs_write+0x304/0xd70 [ 156.649871][ T6066] ? file_end_write+0x250/0x250 [ 156.654832][ T6066] ? mutex_lock_nested+0x17/0x20 [ 156.659772][ T6066] ? __fdget_pos+0x2bf/0x370 [ 156.664359][ T6066] ? ksys_write+0x70/0x260 [ 156.668766][ T6066] ksys_write+0x153/0x260 [ 156.673095][ T6066] ? __ia32_sys_read+0x80/0x80 [ 156.677866][ T6066] ? rcu_is_watching+0x11/0xa0 [ 156.682649][ T6066] do_syscall_64+0x4c/0xa0 [ 156.687067][ T6066] ? clear_bhb_loop+0x30/0x80 [ 156.691840][ T6066] ? clear_bhb_loop+0x30/0x80 [ 156.696546][ T6066] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 156.702449][ T6066] RIP: 0033:0x7f43fb03c74e [ 156.706876][ T6066] 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 [ 156.726571][ T6066] RSP: 002b:00007f43fa2d6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 156.735112][ T6066] RAX: ffffffffffffffda RBX: 00007f43fa2d76c0 RCX: 00007f43fb03c74e [ 156.743090][ T6066] RDX: 0000000000000001 RSI: 00007f43fa2d70b0 RDI: 0000000000000005 [ 156.751061][ T6066] RBP: 00007f43fa2d70a0 R08: 0000000000000000 R09: 0000000000000000 [ 156.759033][ T6066] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 156.767183][ T6066] R13: 000000000000006e R14: 00007f43fb220058 R15: 00007fffb4f5ab98 [ 156.775162][ T6066] [ 156.778188][ T6077] CPU: 0 PID: 6077 Comm: syz.1.270 Not tainted syzkaller #0 2026/07/19 10:40:28 executed programs: 265 [ 156.785477][ T6077] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 156.795537][ T6077] Call Trace: [ 156.798821][ T6077] [ 156.801841][ T6077] dump_stack_lvl+0x188/0x250 [ 156.806525][ T6077] ? show_regs_print_info+0x20/0x20 [ 156.811732][ T6077] ? load_image+0x410/0x410 [ 156.816254][ T6077] ? rcu_is_watching+0x11/0xa0 [ 156.821006][ T6077] ? __lock_acquire+0x7b50/0x7b50 [ 156.826196][ T6077] ? rcu_is_watching+0x11/0xa0 [ 156.831075][ T6077] ? lock_release+0xb5/0x8a0 [ 156.835676][ T6077] should_fail+0x383/0x4b0 [ 156.840165][ T6077] _copy_from_user+0x2e/0x170 [ 156.844826][ T6077] kstrtouint_from_user+0xd3/0x220 [ 156.849924][ T6077] ? rcu_is_watching+0x11/0xa0 [ 156.854677][ T6077] ? kstrtol_from_user+0x2a0/0x2a0 [ 156.859766][ T6077] ? lock_acquire+0xc8/0x400 [ 156.864342][ T6077] ? __mutex_trylock_common+0x15c/0x260 [ 156.870046][ T6077] ? read_lock_is_recursive+0x10/0x10 [ 156.875410][ T6077] proc_fail_nth_write+0x8b/0x200 [ 156.880448][ T6077] ? proc_fail_nth_read+0x220/0x220 [ 156.885637][ T6077] ? common_file_perm+0x171/0x1c0 [ 156.890675][ T6077] ? preempt_count_add+0x8d/0x190 [ 156.895700][ T6077] ? proc_fail_nth_read+0x220/0x220 [ 156.900895][ T6077] vfs_write+0x304/0xd70 [ 156.905131][ T6077] ? file_end_write+0x250/0x250 [ 156.909996][ T6077] ? mutex_lock_nested+0x17/0x20 [ 156.915031][ T6077] ? __fdget_pos+0x2bf/0x370 [ 156.919666][ T6077] ? ksys_write+0x70/0x260 [ 156.924087][ T6077] ksys_write+0x153/0x260 [ 156.928400][ T6077] ? __ia32_sys_read+0x80/0x80 [ 156.933147][ T6077] ? rcu_is_watching+0x11/0xa0 [ 156.937896][ T6077] do_syscall_64+0x4c/0xa0 [ 156.942294][ T6077] ? clear_bhb_loop+0x30/0x80 [ 156.946953][ T6077] ? clear_bhb_loop+0x30/0x80 [ 156.951614][ T6077] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 156.957493][ T6077] RIP: 0033:0x7f3258da874e [ 156.961892][ T6077] 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 [ 156.981485][ T6077] RSP: 002b:00007f3258042ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 156.989899][ T6077] RAX: ffffffffffffffda RBX: 00007f32580436c0 RCX: 00007f3258da874e [ 156.997852][ T6077] RDX: 0000000000000001 RSI: 00007f32580430b0 RDI: 0000000000000005 [ 157.006005][ T6077] RBP: 00007f32580430a0 R08: 0000000000000000 R09: 0000000000000000 [ 157.014143][ T6077] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 157.022102][ T6077] R13: 000000000000006e R14: 00007f3258f8c058 R15: 00007ffdf34c27f8 [ 157.030063][ T6077] [ 157.069542][ T6089] FAULT_INJECTION: forcing a failure. [ 157.069542][ T6089] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 157.092573][ T6094] FAULT_INJECTION: forcing a failure. [ 157.092573][ T6094] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 157.119630][ T6089] CPU: 0 PID: 6089 Comm: syz.4.271 Not tainted syzkaller #0 [ 157.126955][ T6089] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 157.137009][ T6089] Call Trace: [ 157.140306][ T6089] [ 157.143244][ T6089] dump_stack_lvl+0x188/0x250 [ 157.147938][ T6089] ? show_regs_print_info+0x20/0x20 [ 157.153150][ T6089] ? load_image+0x410/0x410 [ 157.157662][ T6089] ? rcu_is_watching+0x11/0xa0 [ 157.159707][ T6101] FAULT_INJECTION: forcing a failure. [ 157.159707][ T6101] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 157.162434][ T6089] ? __lock_acquire+0x7b50/0x7b50 [ 157.180440][ T6089] ? rcu_is_watching+0x11/0xa0 [ 157.185207][ T6089] ? lock_release+0xb5/0x8a0 [ 157.189812][ T6089] should_fail+0x383/0x4b0 [ 157.194329][ T6089] _copy_from_user+0x2e/0x170 [ 157.199012][ T6089] kstrtouint_from_user+0xd3/0x220 [ 157.204121][ T6089] ? rcu_is_watching+0x11/0xa0 [ 157.208884][ T6089] ? kstrtol_from_user+0x2a0/0x2a0 [ 157.213992][ T6089] ? lock_acquire+0xc8/0x400 [ 157.218678][ T6089] ? __mutex_trylock_common+0x15c/0x260 [ 157.224236][ T6089] ? read_lock_is_recursive+0x10/0x10 [ 157.229717][ T6089] proc_fail_nth_write+0x8b/0x200 [ 157.234758][ T6089] ? proc_fail_nth_read+0x220/0x220 [ 157.239974][ T6089] ? common_file_perm+0x171/0x1c0 [ 157.245014][ T6089] ? preempt_count_add+0x8d/0x190 [ 157.250045][ T6089] ? proc_fail_nth_read+0x220/0x220 [ 157.255248][ T6089] vfs_write+0x304/0xd70 [ 157.259498][ T6089] ? file_end_write+0x250/0x250 [ 157.264353][ T6089] ? mutex_lock_nested+0x17/0x20 [ 157.269291][ T6089] ? __fdget_pos+0x2bf/0x370 [ 157.273885][ T6089] ? ksys_write+0x70/0x260 [ 157.278293][ T6089] ksys_write+0x153/0x260 [ 157.282612][ T6089] ? __ia32_sys_read+0x80/0x80 [ 157.287362][ T6089] ? rcu_is_watching+0x11/0xa0 [ 157.292108][ T6089] do_syscall_64+0x4c/0xa0 [ 157.296507][ T6089] ? clear_bhb_loop+0x30/0x80 [ 157.301165][ T6089] ? clear_bhb_loop+0x30/0x80 [ 157.305822][ T6089] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 157.311695][ T6089] RIP: 0033:0x7f8c3f13c74e [ 157.316091][ T6089] 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 [ 157.335919][ T6089] RSP: 002b:00007f8c3e3d6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 157.344413][ T6089] RAX: ffffffffffffffda RBX: 00007f8c3e3d76c0 RCX: 00007f8c3f13c74e [ 157.352381][ T6089] RDX: 0000000000000001 RSI: 00007f8c3e3d70b0 RDI: 0000000000000005 [ 157.360344][ T6089] RBP: 00007f8c3e3d70a0 R08: 0000000000000000 R09: 0000000000000000 [ 157.368323][ T6089] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 157.376283][ T6089] R13: 000000000000006e R14: 00007f8c3f320058 R15: 00007ffc85ff7248 [ 157.384275][ T6089] [ 157.389230][ T6094] CPU: 0 PID: 6094 Comm: syz.3.274 Not tainted syzkaller #0 [ 157.390066][ T6098] FAULT_INJECTION: forcing a failure. [ 157.390066][ T6098] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 157.396521][ T6094] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 157.396533][ T6094] Call Trace: [ 157.396539][ T6094] [ 157.396545][ T6094] dump_stack_lvl+0x188/0x250 [ 157.396572][ T6094] ? show_regs_print_info+0x20/0x20 [ 157.396587][ T6094] ? load_image+0x410/0x410 [ 157.396601][ T6094] ? rcu_is_watching+0x11/0xa0 [ 157.396617][ T6094] ? __lock_acquire+0x7b50/0x7b50 [ 157.396633][ T6094] ? rcu_is_watching+0x11/0xa0 [ 157.396646][ T6094] ? lock_release+0xb5/0x8a0 [ 157.396664][ T6094] should_fail+0x383/0x4b0 [ 157.396682][ T6094] _copy_from_user+0x2e/0x170 [ 157.396701][ T6094] kstrtouint_from_user+0xd3/0x220 [ 157.396716][ T6094] ? rcu_is_watching+0x11/0xa0 [ 157.396730][ T6094] ? kstrtol_from_user+0x2a0/0x2a0 [ 157.396743][ T6094] ? lock_acquire+0xc8/0x400 [ 157.488019][ T6094] ? __mutex_trylock_common+0x15c/0x260 [ 157.493568][ T6094] ? read_lock_is_recursive+0x10/0x10 [ 157.498937][ T6094] proc_fail_nth_write+0x8b/0x200 [ 157.503966][ T6094] ? proc_fail_nth_read+0x220/0x220 [ 157.509162][ T6094] ? common_file_perm+0x171/0x1c0 [ 157.514175][ T6094] ? preempt_count_add+0x8d/0x190 [ 157.519196][ T6094] ? proc_fail_nth_read+0x220/0x220 [ 157.524386][ T6094] vfs_write+0x304/0xd70 [ 157.528641][ T6094] ? file_end_write+0x250/0x250 [ 157.533518][ T6094] ? mutex_lock_nested+0x17/0x20 [ 157.538447][ T6094] ? __fdget_pos+0x2bf/0x370 [ 157.543150][ T6094] ? ksys_write+0x70/0x260 [ 157.547557][ T6094] ksys_write+0x153/0x260 [ 157.551893][ T6094] ? __ia32_sys_read+0x80/0x80 [ 157.556730][ T6094] ? rcu_is_watching+0x11/0xa0 [ 157.561581][ T6094] do_syscall_64+0x4c/0xa0 [ 157.566075][ T6094] ? clear_bhb_loop+0x30/0x80 [ 157.570732][ T6094] ? clear_bhb_loop+0x30/0x80 [ 157.575397][ T6094] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 157.581270][ T6094] RIP: 0033:0x7f496b98e74e [ 157.585760][ T6094] 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 [ 157.605347][ T6094] RSP: 002b:00007f496ac49ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 157.613830][ T6094] RAX: ffffffffffffffda RBX: 00007f496ac4a6c0 RCX: 00007f496b98e74e [ 157.622147][ T6094] RDX: 0000000000000001 RSI: 00007f496ac4a0b0 RDI: 0000000000000007 [ 157.630100][ T6094] RBP: 00007f496ac4a0a0 R08: 0000000000000000 R09: 0000000000000000 [ 157.638055][ T6094] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 157.646010][ T6094] R13: 000000000000000b R14: 00007f496bb71f80 R15: 00007ffc8ba6e9a8 [ 157.653983][ T6094] [ 157.659280][ T6098] CPU: 1 PID: 6098 Comm: syz.2.273 Not tainted syzkaller #0 [ 157.666578][ T6098] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 157.676626][ T6098] Call Trace: [ 157.679901][ T6098] [ 157.682833][ T6098] dump_stack_lvl+0x188/0x250 [ 157.687522][ T6098] ? show_regs_print_info+0x20/0x20 [ 157.692740][ T6098] ? load_image+0x410/0x410 [ 157.697276][ T6098] ? rcu_is_watching+0x11/0xa0 [ 157.702036][ T6098] ? __lock_acquire+0x7b50/0x7b50 [ 157.707057][ T6098] ? rcu_is_watching+0x11/0xa0 [ 157.711906][ T6098] ? lock_release+0xb5/0x8a0 [ 157.716489][ T6098] should_fail+0x383/0x4b0 [ 157.720907][ T6098] _copy_from_user+0x2e/0x170 [ 157.725580][ T6098] kstrtouint_from_user+0xd3/0x220 [ 157.730682][ T6098] ? rcu_is_watching+0x11/0xa0 [ 157.735446][ T6098] ? kstrtol_from_user+0x2a0/0x2a0 [ 157.740551][ T6098] ? lock_acquire+0xc8/0x400 [ 157.745136][ T6098] ? __mutex_trylock_common+0x15c/0x260 [ 157.750680][ T6098] ? read_lock_is_recursive+0x10/0x10 [ 157.756145][ T6098] proc_fail_nth_write+0x8b/0x200 [ 157.761165][ T6098] ? proc_fail_nth_read+0x220/0x220 [ 157.766369][ T6098] ? common_file_perm+0x171/0x1c0 [ 157.771398][ T6098] ? preempt_count_add+0x8d/0x190 [ 157.776416][ T6098] ? proc_fail_nth_read+0x220/0x220 [ 157.781613][ T6098] vfs_write+0x304/0xd70 [ 157.785846][ T6098] ? file_end_write+0x250/0x250 [ 157.790684][ T6098] ? mutex_lock_nested+0x17/0x20 [ 157.795881][ T6098] ? __fdget_pos+0x2bf/0x370 [ 157.800546][ T6098] ? ksys_write+0x70/0x260 [ 157.805047][ T6098] ksys_write+0x153/0x260 [ 157.809367][ T6098] ? __ia32_sys_read+0x80/0x80 [ 157.814120][ T6098] ? rcu_is_watching+0x11/0xa0 [ 157.818880][ T6098] do_syscall_64+0x4c/0xa0 [ 157.823284][ T6098] ? clear_bhb_loop+0x30/0x80 [ 157.827946][ T6098] ? clear_bhb_loop+0x30/0x80 [ 157.832615][ T6098] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 157.838496][ T6098] RIP: 0033:0x7f43fb03c74e [ 157.842902][ T6098] 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 [ 157.862635][ T6098] RSP: 002b:00007f43fa2d6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 157.871046][ T6098] RAX: ffffffffffffffda RBX: 00007f43fa2d76c0 RCX: 00007f43fb03c74e [ 157.879030][ T6098] RDX: 0000000000000001 RSI: 00007f43fa2d70b0 RDI: 0000000000000005 [ 157.887006][ T6098] RBP: 00007f43fa2d70a0 R08: 0000000000000000 R09: 0000000000000000 [ 157.894967][ T6098] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 157.902929][ T6098] R13: 000000000000006e R14: 00007f43fb220058 R15: 00007fffb4f5ab98 [ 157.910905][ T6098] [ 157.913912][ T6101] CPU: 0 PID: 6101 Comm: syz.0.272 Not tainted syzkaller #0 [ 157.921217][ T6101] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 157.931277][ T6101] Call Trace: [ 157.934572][ T6101] [ 157.937488][ T6101] dump_stack_lvl+0x188/0x250 [ 157.942276][ T6101] ? show_regs_print_info+0x20/0x20 [ 157.947472][ T6101] ? load_image+0x410/0x410 [ 157.951966][ T6101] ? rcu_is_watching+0x11/0xa0 [ 157.956738][ T6101] ? __lock_acquire+0x7b50/0x7b50 [ 157.961752][ T6101] ? rcu_is_watching+0x11/0xa0 [ 157.966495][ T6101] ? lock_release+0xb5/0x8a0 [ 157.971064][ T6101] should_fail+0x383/0x4b0 [ 157.975462][ T6101] _copy_from_user+0x2e/0x170 [ 157.980126][ T6101] kstrtouint_from_user+0xd3/0x220 [ 157.985216][ T6101] ? rcu_is_watching+0x11/0xa0 [ 157.989964][ T6101] ? kstrtol_from_user+0x2a0/0x2a0 [ 157.995052][ T6101] ? lock_acquire+0xc8/0x400 [ 157.999626][ T6101] ? __mutex_trylock_common+0x15c/0x260 [ 158.005240][ T6101] ? read_lock_is_recursive+0x10/0x10 [ 158.010598][ T6101] proc_fail_nth_write+0x8b/0x200 [ 158.015605][ T6101] ? proc_fail_nth_read+0x220/0x220 [ 158.020958][ T6101] ? common_file_perm+0x171/0x1c0 [ 158.026113][ T6101] ? preempt_count_add+0x8d/0x190 [ 158.031132][ T6101] ? proc_fail_nth_read+0x220/0x220 [ 158.036314][ T6101] vfs_write+0x304/0xd70 [ 158.040549][ T6101] ? file_end_write+0x250/0x250 [ 158.045387][ T6101] ? mutex_lock_nested+0x17/0x20 [ 158.050318][ T6101] ? __fdget_pos+0x2bf/0x370 [ 158.054890][ T6101] ? ksys_write+0x70/0x260 [ 158.059297][ T6101] ksys_write+0x153/0x260 [ 158.063606][ T6101] ? __ia32_sys_read+0x80/0x80 [ 158.068353][ T6101] ? rcu_is_watching+0x11/0xa0 [ 158.073112][ T6101] do_syscall_64+0x4c/0xa0 [ 158.077508][ T6101] ? clear_bhb_loop+0x30/0x80 [ 158.082280][ T6101] ? clear_bhb_loop+0x30/0x80 [ 158.086938][ T6101] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 158.092811][ T6101] RIP: 0033:0x7f0a25ce074e [ 158.097207][ T6101] 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 [ 158.116825][ T6101] RSP: 002b:00007f0a24f7aff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 158.125224][ T6101] RAX: ffffffffffffffda RBX: 00007f0a24f7b6c0 RCX: 00007f0a25ce074e [ 158.133178][ T6101] RDX: 0000000000000001 RSI: 00007f0a24f7b0b0 RDI: 0000000000000005 [ 158.141138][ T6101] RBP: 00007f0a24f7b0a0 R08: 0000000000000000 R09: 0000000000000000 [ 158.149185][ T6101] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 158.157142][ T6101] R13: 000000000000006e R14: 00007f0a25ec4058 R15: 00007fff8b3f2f08 [ 158.165110][ T6101] [ 158.189748][ T6110] FAULT_INJECTION: forcing a failure. [ 158.189748][ T6110] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 158.209391][ T6113] FAULT_INJECTION: forcing a failure. [ 158.209391][ T6113] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 158.236290][ T6110] CPU: 1 PID: 6110 Comm: syz.4.275 Not tainted syzkaller #0 [ 158.236758][ T6114] FAULT_INJECTION: forcing a failure. [ 158.236758][ T6114] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 158.243622][ T6110] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 158.266738][ T6110] Call Trace: [ 158.270004][ T6110] [ 158.272927][ T6110] dump_stack_lvl+0x188/0x250 [ 158.277615][ T6110] ? show_regs_print_info+0x20/0x20 [ 158.282903][ T6110] ? load_image+0x410/0x410 [ 158.287412][ T6110] ? rcu_is_watching+0x11/0xa0 [ 158.292183][ T6110] ? __lock_acquire+0x7b50/0x7b50 [ 158.297208][ T6110] ? rcu_is_watching+0x11/0xa0 [ 158.301966][ T6110] ? lock_release+0xb5/0x8a0 [ 158.306563][ T6110] should_fail+0x383/0x4b0 [ 158.310976][ T6110] _copy_from_user+0x2e/0x170 [ 158.315641][ T6110] kstrtouint_from_user+0xd3/0x220 [ 158.320778][ T6110] ? rcu_is_watching+0x11/0xa0 [ 158.325542][ T6110] ? kstrtol_from_user+0x2a0/0x2a0 [ 158.330644][ T6110] ? lock_acquire+0xc8/0x400 [ 158.335232][ T6110] ? __mutex_trylock_common+0x15c/0x260 [ 158.340773][ T6110] ? read_lock_is_recursive+0x10/0x10 [ 158.346137][ T6110] proc_fail_nth_write+0x8b/0x200 [ 158.351162][ T6110] ? proc_fail_nth_read+0x220/0x220 [ 158.356446][ T6110] ? common_file_perm+0x171/0x1c0 [ 158.361564][ T6110] ? preempt_count_add+0x8d/0x190 [ 158.366586][ T6110] ? proc_fail_nth_read+0x220/0x220 [ 158.372039][ T6110] vfs_write+0x304/0xd70 [ 158.376277][ T6110] ? file_end_write+0x250/0x250 [ 158.381128][ T6110] ? mutex_lock_nested+0x17/0x20 [ 158.386061][ T6110] ? __fdget_pos+0x2bf/0x370 [ 158.390643][ T6110] ? ksys_write+0x70/0x260 [ 158.395048][ T6110] ksys_write+0x153/0x260 [ 158.399390][ T6110] ? __ia32_sys_read+0x80/0x80 [ 158.400579][ T6117] FAULT_INJECTION: forcing a failure. [ 158.400579][ T6117] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 158.404235][ T6110] ? rcu_is_watching+0x11/0xa0 [ 158.404258][ T6110] do_syscall_64+0x4c/0xa0 [ 158.426731][ T6110] ? clear_bhb_loop+0x30/0x80 [ 158.431488][ T6110] ? clear_bhb_loop+0x30/0x80 [ 158.436339][ T6110] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 158.442659][ T6110] RIP: 0033:0x7f8c3f13c74e [ 158.447152][ T6110] 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 [ 158.467372][ T6110] RSP: 002b:00007f8c3e3f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 158.475784][ T6110] RAX: ffffffffffffffda RBX: 00007f8c3e3f86c0 RCX: 00007f8c3f13c74e [ 158.483930][ T6110] RDX: 0000000000000001 RSI: 00007f8c3e3f80b0 RDI: 0000000000000007 [ 158.491981][ T6110] RBP: 00007f8c3e3f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 158.499947][ T6110] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 158.507909][ T6110] R13: 000000000000000b R14: 00007f8c3f31ff80 R15: 00007ffc85ff7248 [ 158.516015][ T6110] [ 158.519030][ T6117] CPU: 0 PID: 6117 Comm: syz.3.278 Not tainted syzkaller #0 [ 158.526326][ T6117] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 158.536385][ T6117] Call Trace: [ 158.539680][ T6117] [ 158.542774][ T6117] dump_stack_lvl+0x188/0x250 [ 158.547452][ T6117] ? show_regs_print_info+0x20/0x20 [ 158.552644][ T6117] ? load_image+0x410/0x410 [ 158.557144][ T6117] ? rcu_is_watching+0x11/0xa0 [ 158.561908][ T6117] ? __lock_acquire+0x7b50/0x7b50 [ 158.566939][ T6117] ? rcu_is_watching+0x11/0xa0 [ 158.571734][ T6117] ? lock_release+0xb5/0x8a0 [ 158.576331][ T6117] should_fail+0x383/0x4b0 [ 158.580835][ T6117] _copy_from_user+0x2e/0x170 [ 158.585512][ T6117] kstrtouint_from_user+0xd3/0x220 [ 158.590630][ T6117] ? rcu_is_watching+0x11/0xa0 [ 158.595400][ T6117] ? kstrtol_from_user+0x2a0/0x2a0 [ 158.600507][ T6117] ? lock_acquire+0xc8/0x400 [ 158.605105][ T6117] ? __mutex_trylock_common+0x15c/0x260 [ 158.610648][ T6117] ? read_lock_is_recursive+0x10/0x10 [ 158.616030][ T6117] proc_fail_nth_write+0x8b/0x200 [ 158.621095][ T6117] ? proc_fail_nth_read+0x220/0x220 [ 158.626332][ T6117] ? common_file_perm+0x171/0x1c0 [ 158.631528][ T6117] ? preempt_count_add+0x8d/0x190 [ 158.636554][ T6117] ? proc_fail_nth_read+0x220/0x220 [ 158.641834][ T6117] vfs_write+0x304/0xd70 [ 158.646080][ T6117] ? file_end_write+0x250/0x250 [ 158.650939][ T6117] ? mutex_lock_nested+0x17/0x20 [ 158.655877][ T6117] ? __fdget_pos+0x2bf/0x370 [ 158.660474][ T6117] ? ksys_write+0x70/0x260 [ 158.664897][ T6117] ksys_write+0x153/0x260 [ 158.669233][ T6117] ? __ia32_sys_read+0x80/0x80 [ 158.674017][ T6117] ? rcu_is_watching+0x11/0xa0 [ 158.678785][ T6117] do_syscall_64+0x4c/0xa0 [ 158.683203][ T6117] ? clear_bhb_loop+0x30/0x80 [ 158.687877][ T6117] ? clear_bhb_loop+0x30/0x80 [ 158.692559][ T6117] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 158.698447][ T6117] RIP: 0033:0x7f496b98e74e [ 158.702858][ T6117] 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 [ 158.722454][ T6117] RSP: 002b:00007f496ac28ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 158.730952][ T6117] RAX: ffffffffffffffda RBX: 00007f496ac296c0 RCX: 00007f496b98e74e [ 158.738935][ T6117] RDX: 0000000000000001 RSI: 00007f496ac290b0 RDI: 0000000000000004 [ 158.746907][ T6117] RBP: 00007f496ac290a0 R08: 0000000000000000 R09: 0000000000000000 [ 158.754878][ T6117] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 158.762848][ T6117] R13: 000000000000006e R14: 00007f496bb72058 R15: 00007ffc8ba6e9a8 [ 158.770828][ T6117] [ 158.777944][ T6113] CPU: 1 PID: 6113 Comm: syz.1.276 Not tainted syzkaller #0 [ 158.785254][ T6113] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 158.795302][ T6113] Call Trace: [ 158.798579][ T6113] [ 158.801501][ T6113] dump_stack_lvl+0x188/0x250 [ 158.806174][ T6113] ? show_regs_print_info+0x20/0x20 [ 158.811380][ T6113] ? load_image+0x410/0x410 [ 158.815875][ T6113] ? rcu_is_watching+0x11/0xa0 [ 158.820643][ T6113] ? __lock_acquire+0x7b50/0x7b50 [ 158.825666][ T6113] ? rcu_is_watching+0x11/0xa0 [ 158.830421][ T6113] ? lock_release+0xb5/0x8a0 [ 158.835001][ T6113] should_fail+0x383/0x4b0 [ 158.839409][ T6113] _copy_from_user+0x2e/0x170 [ 158.844088][ T6113] kstrtouint_from_user+0xd3/0x220 [ 158.849194][ T6113] ? rcu_is_watching+0x11/0xa0 [ 158.853961][ T6113] ? kstrtol_from_user+0x2a0/0x2a0 [ 158.859067][ T6113] ? lock_acquire+0xc8/0x400 [ 158.863671][ T6113] ? __mutex_trylock_common+0x15c/0x260 [ 158.869216][ T6113] ? read_lock_is_recursive+0x10/0x10 [ 158.874593][ T6113] proc_fail_nth_write+0x8b/0x200 [ 158.879616][ T6113] ? proc_fail_nth_read+0x220/0x220 [ 158.884808][ T6113] ? common_file_perm+0x171/0x1c0 [ 158.889832][ T6113] ? preempt_count_add+0x8d/0x190 [ 158.894866][ T6113] ? proc_fail_nth_read+0x220/0x220 [ 158.900073][ T6113] vfs_write+0x304/0xd70 [ 158.904330][ T6113] ? file_end_write+0x250/0x250 [ 158.909192][ T6113] ? mutex_lock_nested+0x17/0x20 [ 158.914144][ T6113] ? __fdget_pos+0x2bf/0x370 [ 158.918736][ T6113] ? ksys_write+0x70/0x260 [ 158.923151][ T6113] ksys_write+0x153/0x260 [ 158.927483][ T6113] ? __ia32_sys_read+0x80/0x80 [ 158.932253][ T6113] ? rcu_is_watching+0x11/0xa0 [ 158.937010][ T6113] do_syscall_64+0x4c/0xa0 [ 158.941420][ T6113] ? clear_bhb_loop+0x30/0x80 [ 158.946088][ T6113] ? clear_bhb_loop+0x30/0x80 [ 158.950762][ T6113] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 158.956658][ T6113] RIP: 0033:0x7f3258da874e [ 158.961114][ T6113] 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 [ 158.980714][ T6113] RSP: 002b:00007f3258063ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 158.989211][ T6113] RAX: ffffffffffffffda RBX: 00007f32580646c0 RCX: 00007f3258da874e [ 158.997187][ T6113] RDX: 0000000000000001 RSI: 00007f32580640b0 RDI: 0000000000000007 [ 159.005152][ T6113] RBP: 00007f32580640a0 R08: 0000000000000000 R09: 0000000000000000 [ 159.013111][ T6113] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 159.021069][ T6113] R13: 000000000000000b R14: 00007f3258f8bf80 R15: 00007ffdf34c27f8 [ 159.029036][ T6113] [ 159.032069][ T6114] CPU: 0 PID: 6114 Comm: syz.2.277 Not tainted syzkaller #0 [ 159.039367][ T6114] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 159.049669][ T6114] Call Trace: [ 159.052935][ T6114] [ 159.055845][ T6114] dump_stack_lvl+0x188/0x250 [ 159.060510][ T6114] ? show_regs_print_info+0x20/0x20 [ 159.065775][ T6114] ? load_image+0x410/0x410 [ 159.070268][ T6114] ? rcu_is_watching+0x11/0xa0 [ 159.075010][ T6114] ? __lock_acquire+0x7b50/0x7b50 [ 159.080014][ T6114] ? rcu_is_watching+0x11/0xa0 [ 159.084773][ T6114] ? lock_release+0xb5/0x8a0 [ 159.089348][ T6114] should_fail+0x383/0x4b0 [ 159.093766][ T6114] _copy_from_user+0x2e/0x170 [ 159.098445][ T6114] kstrtouint_from_user+0xd3/0x220 [ 159.103538][ T6114] ? rcu_is_watching+0x11/0xa0 [ 159.108280][ T6114] ? kstrtol_from_user+0x2a0/0x2a0 [ 159.113372][ T6114] ? lock_acquire+0xc8/0x400 [ 159.117947][ T6114] ? __mutex_trylock_common+0x15c/0x260 [ 159.123481][ T6114] ? read_lock_is_recursive+0x10/0x10 [ 159.128835][ T6114] proc_fail_nth_write+0x8b/0x200 [ 159.133838][ T6114] ? proc_fail_nth_read+0x220/0x220 [ 159.139013][ T6114] ? common_file_perm+0x171/0x1c0 [ 159.144017][ T6114] ? preempt_count_add+0x8d/0x190 [ 159.149194][ T6114] ? proc_fail_nth_read+0x220/0x220 [ 159.154378][ T6114] vfs_write+0x304/0xd70 [ 159.158606][ T6114] ? file_end_write+0x250/0x250 [ 159.163460][ T6114] ? mutex_lock_nested+0x17/0x20 [ 159.168479][ T6114] ? __fdget_pos+0x2bf/0x370 [ 159.173135][ T6114] ? ksys_write+0x70/0x260 [ 159.177536][ T6114] ksys_write+0x153/0x260 [ 159.181851][ T6114] ? __ia32_sys_read+0x80/0x80 [ 159.186777][ T6114] ? rcu_is_watching+0x11/0xa0 [ 159.191519][ T6114] do_syscall_64+0x4c/0xa0 [ 159.195917][ T6114] ? clear_bhb_loop+0x30/0x80 [ 159.200575][ T6114] ? clear_bhb_loop+0x30/0x80 [ 159.205229][ T6114] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 159.211369][ T6114] RIP: 0033:0x7f43fb03c74e [ 159.215773][ T6114] 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 [ 159.235451][ T6114] RSP: 002b:00007f43fa2f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 159.243857][ T6114] RAX: ffffffffffffffda RBX: 00007f43fa2f86c0 RCX: 00007f43fb03c74e [ 159.251835][ T6114] RDX: 0000000000000001 RSI: 00007f43fa2f80b0 RDI: 0000000000000007 [ 159.259811][ T6114] RBP: 00007f43fa2f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 159.267937][ T6114] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 159.275978][ T6114] R13: 000000000000000b R14: 00007f43fb21ff80 R15: 00007fffb4f5ab98 [ 159.284197][ T6114] [ 159.306375][ T6131] FAULT_INJECTION: forcing a failure. [ 159.306375][ T6131] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 159.306424][ T6132] FAULT_INJECTION: forcing a failure. [ 159.306424][ T6132] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 159.334837][ T6134] FAULT_INJECTION: forcing a failure. [ 159.334837][ T6134] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 159.342883][ T6131] CPU: 0 PID: 6131 Comm: syz.4.280 Not tainted syzkaller #0 [ 159.355326][ T6131] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 159.365392][ T6131] Call Trace: [ 159.368661][ T6131] [ 159.371583][ T6131] dump_stack_lvl+0x188/0x250 [ 159.376350][ T6131] ? show_regs_print_info+0x20/0x20 [ 159.381542][ T6131] ? load_image+0x410/0x410 [ 159.386042][ T6131] ? rcu_is_watching+0x11/0xa0 [ 159.390805][ T6131] ? __lock_acquire+0x7b50/0x7b50 [ 159.395821][ T6131] ? rcu_is_watching+0x11/0xa0 [ 159.400598][ T6131] ? lock_release+0xb5/0x8a0 [ 159.405200][ T6131] should_fail+0x383/0x4b0 [ 159.409617][ T6131] _copy_from_user+0x2e/0x170 [ 159.414284][ T6131] kstrtouint_from_user+0xd3/0x220 [ 159.419414][ T6131] ? rcu_is_watching+0x11/0xa0 [ 159.424173][ T6131] ? kstrtol_from_user+0x2a0/0x2a0 [ 159.429273][ T6131] ? lock_acquire+0xc8/0x400 [ 159.433844][ T6131] ? __mutex_trylock_common+0x15c/0x260 [ 159.439372][ T6131] ? read_lock_is_recursive+0x10/0x10 [ 159.444728][ T6131] proc_fail_nth_write+0x8b/0x200 [ 159.449733][ T6131] ? proc_fail_nth_read+0x220/0x220 [ 159.455000][ T6131] ? common_file_perm+0x171/0x1c0 [ 159.460091][ T6131] ? preempt_count_add+0x8d/0x190 [ 159.465201][ T6131] ? proc_fail_nth_read+0x220/0x220 [ 159.470524][ T6131] vfs_write+0x304/0xd70 [ 159.474754][ T6131] ? file_end_write+0x250/0x250 [ 159.479590][ T6131] ? mutex_lock_nested+0x17/0x20 [ 159.484515][ T6131] ? __fdget_pos+0x2bf/0x370 [ 159.489111][ T6131] ? ksys_write+0x70/0x260 [ 159.493515][ T6131] ksys_write+0x153/0x260 [ 159.497843][ T6131] ? __ia32_sys_read+0x80/0x80 [ 159.502602][ T6131] ? rcu_is_watching+0x11/0xa0 [ 159.507347][ T6131] do_syscall_64+0x4c/0xa0 [ 159.511743][ T6131] ? clear_bhb_loop+0x30/0x80 [ 159.516409][ T6131] ? clear_bhb_loop+0x30/0x80 [ 159.521069][ T6131] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 159.527059][ T6131] RIP: 0033:0x7f8c3f13c74e [ 159.531457][ T6131] 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 [ 159.551049][ T6131] RSP: 002b:00007f8c3e3f7ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 159.559641][ T6131] RAX: ffffffffffffffda RBX: 00007f8c3e3f86c0 RCX: 00007f8c3f13c74e [ 159.567681][ T6131] RDX: 0000000000000001 RSI: 00007f8c3e3f80b0 RDI: 0000000000000007 [ 159.575648][ T6131] RBP: 00007f8c3e3f80a0 R08: 0000000000000000 R09: 0000000000000000 [ 159.583862][ T6131] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 159.591810][ T6131] R13: 000000000000000b R14: 00007f8c3f31ff80 R15: 00007ffc85ff7248 [ 159.599786][ T6131] [ 159.620761][ T6134] CPU: 0 PID: 6134 Comm: syz.1.281 Not tainted syzkaller #0 [ 159.628083][ T6134] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 159.638145][ T6134] Call Trace: [ 159.641418][ T6134] [ 159.644338][ T6134] dump_stack_lvl+0x188/0x250 [ 159.649011][ T6134] ? show_regs_print_info+0x20/0x20 [ 159.654204][ T6134] ? load_image+0x410/0x410 [ 159.658702][ T6134] ? rcu_is_watching+0x11/0xa0 [ 159.663454][ T6134] ? __lock_acquire+0x7b50/0x7b50 [ 159.668560][ T6134] ? rcu_is_watching+0x11/0xa0 [ 159.673312][ T6134] ? lock_release+0xb5/0x8a0 [ 159.677979][ T6134] should_fail+0x383/0x4b0 [ 159.682400][ T6134] _copy_from_user+0x2e/0x170 [ 159.687122][ T6134] kstrtouint_from_user+0xd3/0x220 [ 159.692231][ T6134] ? rcu_is_watching+0x11/0xa0 [ 159.696992][ T6134] ? kstrtol_from_user+0x2a0/0x2a0 [ 159.702088][ T6134] ? lock_acquire+0xc8/0x400 [ 159.706667][ T6134] ? __mutex_trylock_common+0x15c/0x260 [ 159.712201][ T6134] ? read_lock_is_recursive+0x10/0x10 [ 159.717574][ T6134] proc_fail_nth_write+0x8b/0x200 [ 159.722592][ T6134] ? proc_fail_nth_read+0x220/0x220 [ 159.727788][ T6134] ? common_file_perm+0x171/0x1c0 [ 159.732809][ T6134] ? preempt_count_add+0x8d/0x190 [ 159.737826][ T6134] ? proc_fail_nth_read+0x220/0x220 [ 159.743011][ T6134] vfs_write+0x304/0xd70 [ 159.747237][ T6134] ? file_end_write+0x250/0x250 [ 159.752166][ T6134] ? mutex_lock_nested+0x17/0x20 [ 159.757081][ T6134] ? __fdget_pos+0x2bf/0x370 [ 159.761647][ T6134] ? ksys_write+0x70/0x260 [ 159.766127][ T6134] ksys_write+0x153/0x260 [ 159.770434][ T6134] ? __ia32_sys_read+0x80/0x80 [ 159.775177][ T6134] ? rcu_is_watching+0x11/0xa0 [ 159.779927][ T6134] do_syscall_64+0x4c/0xa0 [ 159.784325][ T6134] ? clear_bhb_loop+0x30/0x80 [ 159.788983][ T6134] ? clear_bhb_loop+0x30/0x80 [ 159.793639][ T6134] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 159.799512][ T6134] RIP: 0033:0x7f3258da874e [ 159.803949][ T6134] 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 [ 159.823627][ T6134] RSP: 002b:00007f3258063ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 159.832027][ T6134] RAX: ffffffffffffffda RBX: 00007f32580646c0 RCX: 00007f3258da874e [ 159.839998][ T6134] RDX: 0000000000000001 RSI: 00007f32580640b0 RDI: 0000000000000007 [ 159.847953][ T6134] RBP: 00007f32580640a0 R08: 0000000000000000 R09: 0000000000000000 [ 159.855905][ T6134] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 159.863946][ T6134] R13: 000000000000000b R14: 00007f3258f8bf80 R15: 00007ffdf34c27f8 [ 159.872076][ T6134] [ 159.879285][ T6132] CPU: 0 PID: 6132 Comm: syz.0.279 Not tainted syzkaller #0 [ 159.886604][ T6132] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 159.896654][ T6132] Call Trace: [ 159.897090][ T6141] FAULT_INJECTION: forcing a failure. [ 159.897090][ T6141] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 159.899968][ T6132] [ 159.915875][ T6132] dump_stack_lvl+0x188/0x250 [ 159.920553][ T6132] ? show_regs_print_info+0x20/0x20 [ 159.925741][ T6132] ? load_image+0x410/0x410 [ 159.930240][ T6132] ? rcu_is_watching+0x11/0xa0 [ 159.935009][ T6132] ? __lock_acquire+0x7b50/0x7b50 [ 159.940059][ T6132] ? rcu_is_watching+0x11/0xa0 [ 159.944863][ T6132] ? lock_release+0xb5/0x8a0 [ 159.949478][ T6132] should_fail+0x383/0x4b0 [ 159.953904][ T6132] _copy_from_user+0x2e/0x170 [ 159.958585][ T6132] kstrtouint_from_user+0xd3/0x220 [ 159.963709][ T6132] ? rcu_is_watching+0x11/0xa0 [ 159.968478][ T6132] ? kstrtol_from_user+0x2a0/0x2a0 [ 159.973593][ T6132] ? lock_acquire+0xc8/0x400 [ 159.978197][ T6132] ? __mutex_trylock_common+0x15c/0x260 [ 159.981581][ T6145] FAULT_INJECTION: forcing a failure. [ 159.981581][ T6145] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 159.983757][ T6132] ? read_lock_is_recursive+0x10/0x10 [ 160.002111][ T6132] proc_fail_nth_write+0x8b/0x200 [ 160.007244][ T6132] ? proc_fail_nth_read+0x220/0x220 [ 160.012466][ T6132] ? common_file_perm+0x171/0x1c0 [ 160.017505][ T6132] ? preempt_count_add+0x8d/0x190 [ 160.022530][ T6132] ? proc_fail_nth_read+0x220/0x220 [ 160.027721][ T6132] vfs_write+0x304/0xd70 [ 160.030901][ T6147] FAULT_INJECTION: forcing a failure. [ 160.030901][ T6147] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 160.031959][ T6132] ? file_end_write+0x250/0x250 [ 160.049836][ T6132] ? mutex_lock_nested+0x17/0x20 [ 160.054780][ T6132] ? __fdget_pos+0x2bf/0x370 [ 160.059380][ T6132] ? ksys_write+0x70/0x260 [ 160.063801][ T6132] ksys_write+0x153/0x260 [ 160.068140][ T6132] ? __ia32_sys_read+0x80/0x80 [ 160.073003][ T6132] ? rcu_is_watching+0x11/0xa0 [ 160.077780][ T6132] do_syscall_64+0x4c/0xa0 [ 160.082198][ T6132] ? clear_bhb_loop+0x30/0x80 [ 160.086884][ T6132] ? clear_bhb_loop+0x30/0x80 [ 160.091569][ T6132] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 160.097562][ T6132] RIP: 0033:0x7f0a25ce074e [ 160.101987][ T6132] 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 [ 160.121994][ T6132] RSP: 002b:00007f0a24f9bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 160.130399][ T6132] RAX: ffffffffffffffda RBX: 00007f0a24f9c6c0 RCX: 00007f0a25ce074e [ 160.138363][ T6132] RDX: 0000000000000001 RSI: 00007f0a24f9c0b0 RDI: 0000000000000007 [ 160.146321][ T6132] RBP: 00007f0a24f9c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 160.154277][ T6132] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 160.162228][ T6132] R13: 000000000000000b R14: 00007f0a25ec3f80 R15: 00007fff8b3f2f08 [ 160.170184][ T6132] [ 160.173770][ T6147] CPU: 1 PID: 6147 Comm: syz.4.284 Not tainted syzkaller #0 [ 160.181066][ T6147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 160.191120][ T6147] Call Trace: [ 160.194480][ T6147] [ 160.197399][ T6147] dump_stack_lvl+0x188/0x250 [ 160.202071][ T6147] ? show_regs_print_info+0x20/0x20 [ 160.207262][ T6147] ? load_image+0x410/0x410 [ 160.211759][ T6147] ? rcu_is_watching+0x11/0xa0 [ 160.216511][ T6147] ? __lock_acquire+0x7b50/0x7b50 [ 160.221558][ T6147] ? rcu_is_watching+0x11/0xa0 [ 160.226318][ T6147] ? lock_release+0xb5/0x8a0 [ 160.230903][ T6147] should_fail+0x383/0x4b0 [ 160.235310][ T6147] _copy_from_user+0x2e/0x170 [ 160.239979][ T6147] kstrtouint_from_user+0xd3/0x220 [ 160.245085][ T6147] ? rcu_is_watching+0x11/0xa0 [ 160.249836][ T6147] ? kstrtol_from_user+0x2a0/0x2a0 [ 160.254938][ T6147] ? lock_acquire+0xc8/0x400 [ 160.259514][ T6147] ? __mutex_trylock_common+0x15c/0x260 [ 160.265042][ T6147] ? read_lock_is_recursive+0x10/0x10 [ 160.270436][ T6147] proc_fail_nth_write+0x8b/0x200 [ 160.275444][ T6147] ? proc_fail_nth_read+0x220/0x220 [ 160.280622][ T6147] ? common_file_perm+0x171/0x1c0 [ 160.285628][ T6147] ? preempt_count_add+0x8d/0x190 [ 160.290637][ T6147] ? proc_fail_nth_read+0x220/0x220 [ 160.295903][ T6147] vfs_write+0x304/0xd70 [ 160.300150][ T6147] ? file_end_write+0x250/0x250 [ 160.304985][ T6147] ? mutex_lock_nested+0x17/0x20 [ 160.309992][ T6147] ? __fdget_pos+0x2bf/0x370 [ 160.314562][ T6147] ? ksys_write+0x70/0x260 [ 160.318976][ T6147] ksys_write+0x153/0x260 [ 160.323285][ T6147] ? __ia32_sys_read+0x80/0x80 [ 160.328034][ T6147] ? rcu_is_watching+0x11/0xa0 [ 160.332787][ T6147] do_syscall_64+0x4c/0xa0 [ 160.337191][ T6147] ? clear_bhb_loop+0x30/0x80 [ 160.341855][ T6147] ? clear_bhb_loop+0x30/0x80 [ 160.346524][ T6147] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 160.352396][ T6147] RIP: 0033:0x7f8c3f13c74e [ 160.356792][ T6147] 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 [ 160.376550][ T6147] RSP: 002b:00007f8c3e3d6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 160.384942][ T6147] RAX: ffffffffffffffda RBX: 00007f8c3e3d76c0 RCX: 00007f8c3f13c74e [ 160.392894][ T6147] RDX: 0000000000000001 RSI: 00007f8c3e3d70b0 RDI: 0000000000000004 [ 160.400845][ T6147] RBP: 00007f8c3e3d70a0 R08: 0000000000000000 R09: 0000000000000000 [ 160.408795][ T6147] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 160.416756][ T6147] R13: 000000000000006e R14: 00007f8c3f320058 R15: 00007ffc85ff7248 [ 160.424735][ T6147] [ 160.433016][ T6141] CPU: 0 PID: 6141 Comm: syz.3.282 Not tainted syzkaller #0 [ 160.440327][ T6141] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 160.450367][ T6141] Call Trace: [ 160.453630][ T6141] [ 160.456543][ T6141] dump_stack_lvl+0x188/0x250 [ 160.461207][ T6141] ? show_regs_print_info+0x20/0x20 [ 160.466390][ T6141] ? load_image+0x410/0x410 [ 160.470872][ T6141] ? rcu_is_watching+0x11/0xa0 [ 160.475617][ T6141] ? __lock_acquire+0x7b50/0x7b50 [ 160.480624][ T6141] ? rcu_is_watching+0x11/0xa0 [ 160.485367][ T6141] ? lock_release+0xb5/0x8a0 [ 160.489937][ T6141] should_fail+0x383/0x4b0 [ 160.494339][ T6141] _copy_from_user+0x2e/0x170 [ 160.498999][ T6141] kstrtouint_from_user+0xd3/0x220 [ 160.504088][ T6141] ? rcu_is_watching+0x11/0xa0 [ 160.508832][ T6141] ? kstrtol_from_user+0x2a0/0x2a0 [ 160.513960][ T6141] ? lock_acquire+0xc8/0x400 [ 160.518531][ T6141] ? __mutex_trylock_common+0x15c/0x260 [ 160.524069][ T6141] ? read_lock_is_recursive+0x10/0x10 [ 160.529422][ T6141] proc_fail_nth_write+0x8b/0x200 [ 160.534427][ T6141] ? proc_fail_nth_read+0x220/0x220 [ 160.539611][ T6141] ? common_file_perm+0x171/0x1c0 [ 160.544612][ T6141] ? preempt_count_add+0x8d/0x190 [ 160.549620][ T6141] ? proc_fail_nth_read+0x220/0x220 [ 160.554798][ T6141] vfs_write+0x304/0xd70 [ 160.559026][ T6141] ? file_end_write+0x250/0x250 [ 160.563859][ T6141] ? mutex_lock_nested+0x17/0x20 [ 160.568775][ T6141] ? __fdget_pos+0x2bf/0x370 [ 160.573343][ T6141] ? ksys_write+0x70/0x260 [ 160.577770][ T6141] ksys_write+0x153/0x260 [ 160.582081][ T6141] ? __ia32_sys_read+0x80/0x80 [ 160.586825][ T6141] ? rcu_is_watching+0x11/0xa0 [ 160.591571][ T6141] do_syscall_64+0x4c/0xa0 [ 160.595988][ T6141] ? clear_bhb_loop+0x30/0x80 [ 160.600669][ T6141] ? clear_bhb_loop+0x30/0x80 [ 160.605332][ T6141] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 160.611207][ T6141] RIP: 0033:0x7f496b98e74e [ 160.615607][ T6141] 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 [ 160.635194][ T6141] RSP: 002b:00007f496ac28ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 160.643613][ T6141] RAX: ffffffffffffffda RBX: 00007f496ac296c0 RCX: 00007f496b98e74e [ 160.651578][ T6141] RDX: 0000000000000001 RSI: 00007f496ac290b0 RDI: 0000000000000005 [ 160.659543][ T6141] RBP: 00007f496ac290a0 R08: 0000000000000000 R09: 0000000000000000 [ 160.667505][ T6141] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 160.675459][ T6141] R13: 000000000000006e R14: 00007f496bb72058 R15: 00007ffc8ba6e9a8 [ 160.683423][ T6141] [ 160.689463][ T6145] CPU: 0 PID: 6145 Comm: syz.2.283 Not tainted syzkaller #0 [ 160.696773][ T6145] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 160.706834][ T6145] Call Trace: [ 160.710136][ T6145] [ 160.713074][ T6145] dump_stack_lvl+0x188/0x250 [ 160.717767][ T6145] ? show_regs_print_info+0x20/0x20 [ 160.723161][ T6145] ? load_image+0x410/0x410 [ 160.727676][ T6145] ? rcu_is_watching+0x11/0xa0 [ 160.732442][ T6145] ? __lock_acquire+0x7b50/0x7b50 [ 160.737470][ T6145] ? rcu_is_watching+0x11/0xa0 [ 160.742240][ T6145] ? lock_release+0xb5/0x8a0 [ 160.746841][ T6145] should_fail+0x383/0x4b0 [ 160.751270][ T6145] _copy_from_user+0x2e/0x170 [ 160.755939][ T6145] kstrtouint_from_user+0xd3/0x220 [ 160.761121][ T6145] ? rcu_is_watching+0x11/0xa0 [ 160.765872][ T6145] ? kstrtol_from_user+0x2a0/0x2a0 [ 160.770961][ T6145] ? lock_acquire+0xc8/0x400 [ 160.775543][ T6145] ? __mutex_trylock_common+0x15c/0x260 [ 160.781172][ T6145] ? read_lock_is_recursive+0x10/0x10 [ 160.786526][ T6145] proc_fail_nth_write+0x8b/0x200 [ 160.791534][ T6145] ? proc_fail_nth_read+0x220/0x220 [ 160.796713][ T6145] ? common_file_perm+0x171/0x1c0 [ 160.801998][ T6145] ? preempt_count_add+0x8d/0x190 [ 160.807013][ T6145] ? proc_fail_nth_read+0x220/0x220 [ 160.812291][ T6145] vfs_write+0x304/0xd70 [ 160.816524][ T6145] ? file_end_write+0x250/0x250 [ 160.821540][ T6145] ? mutex_lock_nested+0x17/0x20 [ 160.826488][ T6145] ? __fdget_pos+0x2bf/0x370 [ 160.831065][ T6145] ? ksys_write+0x70/0x260 [ 160.835462][ T6145] ksys_write+0x153/0x260 [ 160.839790][ T6145] ? __ia32_sys_read+0x80/0x80 [ 160.844557][ T6145] ? rcu_is_watching+0x11/0xa0 [ 160.849414][ T6145] do_syscall_64+0x4c/0xa0 [ 160.853840][ T6145] ? clear_bhb_loop+0x30/0x80 [ 160.858507][ T6145] ? clear_bhb_loop+0x30/0x80 [ 160.863255][ T6145] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 160.869129][ T6145] RIP: 0033:0x7f43fb03c74e [ 160.873534][ T6145] 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 [ 160.893309][ T6145] RSP: 002b:00007f43fa2d6ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 160.901794][ T6145] RAX: ffffffffffffffda RBX: 00007f43fa2d76c0 RCX: 00007f43fb03c74e [ 160.909747][ T6145] RDX: 0000000000000001 RSI: 00007f43fa2d70b0 RDI: 0000000000000005 [ 160.917702][ T6145] RBP: 00007f43fa2d70a0 R08: 0000000000000000 R09: 0000000000000000 [ 160.925654][ T6145] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 160.933608][ T6145] R13: 000000000000006e R14: 00007f43fb220058 R15: 00007fffb4f5ab98 [ 160.941568][ T6145] [ 160.988918][ T6163] FAULT_INJECTION: forcing a failure. [ 160.988918][ T6163] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 161.005115][ T6160] FAULT_INJECTION: forcing a failure. [ 161.005115][ T6160] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 161.023065][ T6161] FAULT_INJECTION: forcing a failure. [ 161.023065][ T6161] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 161.039431][ T6163] CPU: 0 PID: 6163 Comm: syz.3.288 Not tainted syzkaller #0 [ 161.046834][ T6163] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 161.056970][ T6163] Call Trace: [ 161.060239][ T6163] [ 161.063150][ T6163] dump_stack_lvl+0x188/0x250 [ 161.067825][ T6163] ? show_regs_print_info+0x20/0x20 [ 161.073031][ T6163] ? load_image+0x410/0x410 [ 161.077530][ T6163] ? rcu_is_watching+0x11/0xa0 [ 161.082277][ T6163] ? __lock_acquire+0x7b50/0x7b50 [ 161.087286][ T6163] ? rcu_is_watching+0x11/0xa0 [ 161.092032][ T6163] ? lock_release+0xb5/0x8a0 [ 161.096615][ T6163] should_fail+0x383/0x4b0 [ 161.101033][ T6163] _copy_from_user+0x2e/0x170 [ 161.105703][ T6163] kstrtouint_from_user+0xd3/0x220 [ 161.110821][ T6163] ? rcu_is_watching+0x11/0xa0 [ 161.115571][ T6163] ? kstrtol_from_user+0x2a0/0x2a0 [ 161.120694][ T6163] ? lock_acquire+0xc8/0x400 [ 161.125283][ T6163] ? __mutex_trylock_common+0x15c/0x260 [ 161.130818][ T6163] ? read_lock_is_recursive+0x10/0x10 [ 161.136189][ T6163] proc_fail_nth_write+0x8b/0x200 [ 161.141198][ T6163] ? proc_fail_nth_read+0x220/0x220 [ 161.146385][ T6163] ? common_file_perm+0x171/0x1c0 [ 161.151488][ T6163] ? preempt_count_add+0x8d/0x190 [ 161.156498][ T6163] ? proc_fail_nth_read+0x220/0x220 [ 161.161777][ T6163] vfs_write+0x304/0xd70 [ 161.166018][ T6163] ? file_end_write+0x250/0x250 [ 161.170853][ T6163] ? mutex_lock_nested+0x17/0x20 [ 161.175773][ T6163] ? __fdget_pos+0x2bf/0x370 [ 161.180345][ T6163] ? ksys_write+0x70/0x260 [ 161.184741][ T6163] ksys_write+0x153/0x260 [ 161.189075][ T6163] ? __ia32_sys_read+0x80/0x80 [ 161.193843][ T6163] ? rcu_is_watching+0x11/0xa0 [ 161.198590][ T6163] do_syscall_64+0x4c/0xa0 [ 161.202992][ T6163] ? clear_bhb_loop+0x30/0x80 [ 161.207648][ T6163] ? clear_bhb_loop+0x30/0x80 [ 161.212306][ T6163] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 161.218180][ T6163] RIP: 0033:0x7f496b98e74e [ 161.222582][ T6163] 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 [ 161.242168][ T6163] RSP: 002b:00007f496ac49ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 161.250567][ T6163] RAX: ffffffffffffffda RBX: 00007f496ac4a6c0 RCX: 00007f496b98e74e [ 161.258522][ T6163] RDX: 0000000000000001 RSI: 00007f496ac4a0b0 RDI: 0000000000000007 [ 161.266474][ T6163] RBP: 00007f496ac4a0a0 R08: 0000000000000000 R09: 0000000000000000 [ 161.274425][ T6163] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 161.282374][ T6163] R13: 000000000000000b R14: 00007f496bb71f80 R15: 00007ffc8ba6e9a8 [ 161.290333][ T6163] [ 161.298453][ T6169] FAULT_INJECTION: forcing a failure. [ 161.298453][ T6169] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 161.321175][ T6160] CPU: 0 PID: 6160 Comm: syz.0.286 Not tainted syzkaller #0 [ 161.328539][ T6160] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 161.338597][ T6160] Call Trace: [ 161.341878][ T6160] [ 161.344810][ T6160] dump_stack_lvl+0x188/0x250 [ 161.349580][ T6160] ? show_regs_print_info+0x20/0x20 [ 161.354795][ T6160] ? load_image+0x410/0x410 [ 161.359303][ T6160] ? rcu_is_watching+0x11/0xa0 [ 161.364079][ T6160] ? __lock_acquire+0x7b50/0x7b50 [ 161.369114][ T6160] ? rcu_is_watching+0x11/0xa0 [ 161.373882][ T6160] ? lock_release+0xb5/0x8a0 [ 161.378578][ T6160] should_fail+0x383/0x4b0 [ 161.382999][ T6160] _copy_from_user+0x2e/0x170 [ 161.387666][ T6160] kstrtouint_from_user+0xd3/0x220 [ 161.392763][ T6160] ? rcu_is_watching+0x11/0xa0 [ 161.397545][ T6160] ? kstrtol_from_user+0x2a0/0x2a0 [ 161.402639][ T6160] ? lock_acquire+0xc8/0x400 [ 161.407218][ T6160] ? __mutex_trylock_common+0x15c/0x260 [ 161.412758][ T6160] ? read_lock_is_recursive+0x10/0x10 [ 161.418117][ T6160] proc_fail_nth_write+0x8b/0x200 [ 161.423130][ T6160] ? proc_fail_nth_read+0x220/0x220 [ 161.428315][ T6160] ? common_file_perm+0x171/0x1c0 [ 161.433331][ T6160] ? preempt_count_add+0x8d/0x190 [ 161.438438][ T6160] ? proc_fail_nth_read+0x220/0x220 [ 161.443627][ T6160] vfs_write+0x304/0xd70 [ 161.447862][ T6160] ? file_end_write+0x250/0x250 [ 161.452744][ T6160] ? mutex_lock_nested+0x17/0x20 [ 161.457672][ T6160] ? __fdget_pos+0x2bf/0x370 [ 161.462246][ T6160] ? ksys_write+0x70/0x260 [ 161.466648][ T6160] ksys_write+0x153/0x260 [ 161.470977][ T6160] ? __ia32_sys_read+0x80/0x80 [ 161.475729][ T6160] ? rcu_is_watching+0x11/0xa0 [ 161.480488][ T6160] do_syscall_64+0x4c/0xa0 [ 161.484897][ T6160] ? clear_bhb_loop+0x30/0x80 [ 161.489559][ T6160] ? clear_bhb_loop+0x30/0x80 [ 161.494251][ T6160] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 161.500319][ T6160] RIP: 0033:0x7f0a25ce074e [ 161.504736][ T6160] 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 [ 161.524505][ T6160] RSP: 002b:00007f0a24f9bff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 161.532921][ T6160] RAX: ffffffffffffffda RBX: 00007f0a24f9c6c0 RCX: 00007f0a25ce074e [ 161.540918][ T6160] RDX: 0000000000000001 RSI: 00007f0a24f9c0b0 RDI: 0000000000000007 [ 161.548962][ T6160] RBP: 00007f0a24f9c0a0 R08: 0000000000000000 R09: 0000000000000000 [ 161.557005][ T6160] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 161.564965][ T6160] R13: 000000000000000b R14: 00007f0a25ec3f80 R15: 00007fff8b3f2f08 [ 161.572923][ T6160] [ 161.577544][ T6176] FAULT_INJECTION: forcing a failure. [ 161.577544][ T6176] name fail_usercopy, interval 1, probability 0, space 0, times 0 [ 161.593281][ T6169] CPU: 1 PID: 6169 Comm: syz.2.289 Not tainted syzkaller #0 [ 161.600760][ T6169] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 161.610817][ T6169] Call Trace: [ 161.614084][ T6169] [ 161.616999][ T6169] dump_stack_lvl+0x188/0x250 [ 161.621674][ T6169] ? show_regs_print_info+0x20/0x20 [ 161.626860][ T6169] ? load_image+0x410/0x410 [ 161.631349][ T6169] ? rcu_is_watching+0x11/0xa0 [ 161.636097][ T6169] ? __lock_acquire+0x7b50/0x7b50 [ 161.641108][ T6169] ? rcu_is_watching+0x11/0xa0 [ 161.645856][ T6169] ? lock_release+0xb5/0x8a0 [ 161.650443][ T6169] should_fail+0x383/0x4b0 [ 161.654842][ T6169] _copy_from_user+0x2e/0x170 [ 161.659508][ T6169] kstrtouint_from_user+0xd3/0x220 [ 161.664686][ T6169] ? rcu_is_watching+0x11/0xa0 [ 161.669429][ T6169] ? kstrtol_from_user+0x2a0/0x2a0 [ 161.674518][ T6169] ? lock_acquire+0xc8/0x400 [ 161.679088][ T6169] ? __mutex_trylock_common+0x15c/0x260 [ 161.684614][ T6169] ? read_lock_is_recursive+0x10/0x10 [ 161.690075][ T6169] proc_fail_nth_write+0x8b/0x200 [ 161.695171][ T6169] ? proc_fail_nth_read+0x220/0x220 [ 161.700359][ T6169] ? common_file_perm+0x171/0x1c0 [ 161.705397][ T6169] ? preempt_count_add+0x8d/0x190 [ 161.710404][ T6169] ? proc_fail_nth_read+0x220/0x220 [ 161.715582][ T6169] vfs_write+0x304/0xd70 [ 161.719809][ T6169] ? file_end_write+0x250/0x250 [ 161.724775][ T6169] ? mutex_lock_nested+0x17/0x20 [ 161.729791][ T6169] ? __fdget_pos+0x2bf/0x370 [ 161.734389][ T6169] ? ksys_write+0x70/0x260 [ 161.738889][ T6169] ksys_write+0x153/0x260