loop0: detected capacity change from 0 to 1 FAT-fs (loop0): unable to read boot sector (logical sector size = 2048) Oops: general protection fault, probably for non-canonical address 0xdffffc0020000032: 0000 [#1] SMP KASAN NOPTI KASAN: probably user-memory-access in range [0x0000000100000190-0x0000000100000197] CPU: 0 UID: 0 PID: 4047 Comm: syz-executor.7 Tainted: G W 6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:perf_tp_event+0x175/0xe70 Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01 RSP: 0018:ffff88806ce08a80 EFLAGS: 00010012 RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002 RDX: ffff88800d9d5280 RSI: ffffffff8189a4e7 RDI: 0000000100000190 RBP: ffff88806ce08cf0 R08: ffff88806ce31490 R09: ffffe8ffffc16420 R10: 0000000000000000 R11: 746e756f63716573 R12: dffffc0000000000 R13: 000000000000002c R14: ffff88806ce31490 R15: dffffc0000000000 FS: 00007f1f95115700(0000) GS:ffff8880e55d8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1f97cb3018 CR3: 000000000bf23000 CR4: 0000000000350ef0 Call Trace: perf_trace_run_bpf_submit+0xef/0x180 perf_trace_lock+0x337/0x5d0 lock_release+0x1ab/0x290 ktime_get_update_offsets_now+0xab/0x3c0 hrtimer_interrupt+0x114/0x830 __sysvec_apic_timer_interrupt+0xbb/0x330 sysvec_apic_timer_interrupt+0x6b/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__sanitizer_cov_trace_switch+0x16/0x90 Code: 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 56 41 55 41 54 49 89 fc 55 48 89 f5 53 48 8b 46 08 <48> 83 f8 20 74 6b 77 48 48 83 f8 08 74 5b 48 83 f8 10 75 2f 41 bd RSP: 0018:ffff88800eeaf3b0 EFLAGS: 00000202 RAX: 0000000000000020 RBX: 0000000000000020 RCX: ffffc9000c24a000 RDX: 0000000000040000 RSI: ffffffff85323c20 RDI: 0000000000000003 RBP: ffffffff85323c20 R08: 0000000000000003 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000003 R13: 0000000000000042 R14: 0000000000000010 R15: ffff88800eeaf5d0 get_regno.isra.0+0x49/0x1e0 get_eff_addr_sib+0x26e/0x8c0 insn_get_addr_ref+0x738/0x940 get_kernel_gp_address+0x156/0x230 exc_general_protection+0x259/0x330 asm_exc_general_protection+0x26/0x30 RIP: 0010:perf_tp_event+0x175/0xe70 Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01 RSP: 0018:ffff88800eeaf800 EFLAGS: 00010212 RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: ffffc9000c24a000 RDX: 0000000000040000 RSI: ffffffff8189a4e7 RDI: 0000000100000190 RBP: ffff88800eeafa70 R08: ffff88806ce31340 R09: ffffe8ffffc16420 R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000 R13: 000000000000002c R14: ffff88806ce31340 R15: dffffc0000000000 perf_trace_run_bpf_submit+0xef/0x180 perf_trace_lock+0x337/0x5d0 lock_release+0x1ab/0x290 futex_ref_get+0x119/0x300 futex_hash+0x70/0x390 futex_wake+0x143/0x540 do_futex+0x26d/0x370 __x64_sys_futex+0x1c9/0x4d0 do_syscall_64+0xbf/0x360 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1f97b9fb19 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1f95115218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f1f97cb2f68 RCX: 00007f1f97b9fb19 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f1f97cb2f6c RBP: 00007f1f97cb2f60 R08: 000000000000000e R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 00007f1f97cb2f6c R13: 00007fff438e267f R14: 00007f1f95115300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:perf_tp_event+0x175/0xe70 Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01 RSP: 0018:ffff88806ce08a80 EFLAGS: 00010012 RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002 RDX: ffff88800d9d5280 RSI: ffffffff8189a4e7 RDI: 0000000100000190 RBP: ffff88806ce08cf0 R08: ffff88806ce31490 R09: ffffe8ffffc16420 R10: 0000000000000000 R11: 746e756f63716573 R12: dffffc0000000000 R13: 000000000000002c R14: ffff88806ce31490 R15: dffffc0000000000 FS: 00007f1f95115700(0000) GS:ffff8880e55d8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1f97cb3018 CR3: 000000000bf23000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: df 48 89 fisttps -0x77(%rax) 3: 85 a8 fd ff ff 48 test %ebp,0x48fffffd(%rax) 9: c1 e8 03 shr $0x3,%eax c: 4c 01 e0 add %r12,%rax f: 48 89 85 c8 fd ff ff mov %rax,-0x238(%rbp) 16: e8 c9 51 ea ff callq 0xffea51e4 1b: 48 8d bb f0 01 00 00 lea 0x1f0(%rbx),%rdi 22: 48 89 f8 mov %rdi,%rax 25: 48 c1 e8 03 shr $0x3,%rax * 29: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 74 08 je 0x3a 32: 3c 03 cmp $0x3,%al 34: 0f 8e c5 0b 00 00 jle 0xbff 3a: 44 rex.R 3b: 8b .byte 0x8b 3c: ab stos %eax,%es:(%rdi) 3d: f0 lock 3e: 01 .byte 0x1