R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007f53e07e6218 R14: 00007f53e07e6180 R15: 00007ffef287d038 CFI failure at __traceiter_sched_switch+0x9b/0xd0 include/trace/events/sched.h:222 (target: tp_stub_func+0x0/0x10; expected type: 0xee1f7a69) invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 4041 Comm: syz.5.1084 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:__traceiter_sched_switch+0x9b/0xd0 include/trace/events/sched.h:222 Code: 80 3c 30 00 74 05 e8 f4 86 69 00 49 8b 7d 08 44 89 e6 48 8b 55 c8 48 8b 4d c0 44 8b 45 d4 41 ba 97 85 e0 11 45 03 57 fc 74 02 <0f> 0b 41 ff d7 48 83 c3 18 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 RSP: 0000:ffffc90006f0fa30 EFLAGS: 00010096 RAX: 1ffff11021e65596 RBX: ffff88810f32aca8 RCX: ffff88811c955100 RDX: ffff88811f03e540 RSI: 0000000000000001 RDI: ffffc90007145000 RBP: ffffc90006f0fa70 R08: 0000000000000000 R09: fffffbfff0ee4f16 R10: 00000000b720eca3 R11: 1ffffffff0ee4f15 R12: 0000000000000001 R13: ffff88810f32aca8 R14: dffffc0000000000 R15: ffffffff81714650 FS: 00007f53e13ef6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000011e22f000 CR4: 00000000003526b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: trace_sched_switch include/trace/events/sched.h:222 [inline] __schedule+0x1263/0x14e0 kernel/sched/core.c:6747 preempt_schedule_irq+0x9b/0x110 kernel/sched/core.c:7062 raw_irqentry_exit_cond_resched+0x29/0x30 kernel/entry/common.c:396 irqentry_exit+0x37/0x40 kernel/entry/common.c:439 sysvec_reschedule_ipi+0x78/0x80 arch/x86/kernel/smp.c:244 asm_sysvec_reschedule_ipi+0x1b/0x20 arch/x86/include/asm/idtentry.h:696 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:84 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x75/0x290 mm/kasan/generic.c:189 Code: 00 fc ff df 4f 8d 0c 03 48 8d 5c 37 ff 48 c1 eb 03 4e 8d 14 3b 4d 89 d6 4d 29 ce 49 83 fe 10 7f 26 4d 85 f6 0f 84 39 01 00 00 <48> f7 d3 4c 01 db 41 80 39 00 0f 85 c2 01 00 00 49 ff c1 48 ff c3 RSP: 0000:ffffc90006f0fd10 EFLAGS: 00000202 RAX: 1ffff11023774301 RBX: 1ffff1102008f02f RCX: ffffffff81bd9d9c RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88810047817c RBP: ffffc90006f0fd28 R08: dffffc0000000000 R09: ffffed102008f02f R10: ffffed102008f030 R11: 1ffff1102008f02f R12: ffff88810047817c R13: ffff88811bba1ca0 R14: 0000000000000001 R15: dffffc0000000001 __kasan_check_read+0x11/0x20 mm/kasan/shadow.c:31 instrument_atomic_read include/linux/instrumented.h:72 [inline] atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline] i_readcount_dec include/linux/fs.h:3133 [inline] put_file_access fs/internal.h:108 [inline] __fput+0x4cc/0x8f0 fs/file_table.c:327 ____fput+0x15/0x20 fs/file_table.c:348 task_work_run+0x1db/0x240 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f53e058f749 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f53e13ef038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f53e07e6180 RCX: 00007f53e058f749 RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000000 RBP: 00007f53e13ef090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007f53e07e6218 R14: 00007f53e07e6180 R15: 00007ffef287d038 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__traceiter_sched_switch+0x9b/0xd0 include/trace/events/sched.h:222 Code: 80 3c 30 00 74 05 e8 f4 86 69 00 49 8b 7d 08 44 89 e6 48 8b 55 c8 48 8b 4d c0 44 8b 45 d4 41 ba 97 85 e0 11 45 03 57 fc 74 02 <0f> 0b 41 ff d7 48 83 c3 18 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 RSP: 0000:ffffc90006f0fa30 EFLAGS: 00010096 RAX: 1ffff11021e65596 RBX: ffff88810f32aca8 RCX: ffff88811c955100 RDX: ffff88811f03e540 RSI: 0000000000000001 RDI: ffffc90007145000 RBP: ffffc90006f0fa70 R08: 0000000000000000 R09: fffffbfff0ee4f16 R10: 00000000b720eca3 R11: 1ffffffff0ee4f15 R12: 0000000000000001 R13: ffff88810f32aca8 R14: dffffc0000000000 R15: ffffffff81714650 FS: 00007f53e13ef6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000011e22f000 CR4: 00000000003526b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: df 4f 8d fisttps -0x73(%rdi) 3: 0c 03 or $0x3,%al 5: 48 8d 5c 37 ff lea -0x1(%rdi,%rsi,1),%rbx a: 48 c1 eb 03 shr $0x3,%rbx e: 4e 8d 14 3b lea (%rbx,%r15,1),%r10 12: 4d 89 d6 mov %r10,%r14 15: 4d 29 ce sub %r9,%r14 18: 49 83 fe 10 cmp $0x10,%r14 1c: 7f 26 jg 0x44 1e: 4d 85 f6 test %r14,%r14 21: 0f 84 39 01 00 00 je 0x160 * 27: 48 f7 d3 not %rbx <-- trapping instruction 2a: 4c 01 db add %r11,%rbx 2d: 41 80 39 00 cmpb $0x0,(%r9) 31: 0f 85 c2 01 00 00 jne 0x1f9 37: 49 ff c1 inc %r9 3a: 48 ff c3 inc %rbx