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: 4072 Comm: syz-executor.0 Tainted: G W 6.17.0-rc3-next-20250829 #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:ffff88806ce08740 EFLAGS: 00010012 RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002 RDX: ffff88800fad1b80 RSI: ffffffff818995b7 RDI: 0000000100000190 RBP: ffff88806ce089b0 R08: ffff88806ce313e8 R09: ffffe8ffffc16450 R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000 R13: 0000000000000014 R14: ffff88806ce313e8 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055556215ec58 CR3: 000000003d000000 CR4: 0000000000350ef0 Call Trace: perf_trace_run_bpf_submit+0xef/0x180 perf_trace_preemptirq_template+0x259/0x430 trace_irq_disable.constprop.0+0xa6/0x100 __folio_end_writeback+0x5c2/0xae0 folio_end_writeback+0x11f/0x430 ext4_finish_bio+0x709/0x940 ext4_end_bio+0x14b/0x580 bio_endio+0x5ad/0x6b0 blk_update_request+0x2c5/0x1060 scsi_end_request+0x7a/0xa00 scsi_io_completion+0xbf/0x1640 scsi_complete+0x114/0x380 blk_complete_reqs+0xb2/0xf0 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 common_interrupt+0xbd/0xd0 asm_common_interrupt+0x26/0x40 RIP: 0010:__asan_memset+0xe/0x50 Code: 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 55 41 89 f5 41 54 49 89 d4 01 00 00 00 55 48 8b 4c 24 18 4c 89 e6 48 89 fd e8 4c f0 ff ff RSP: 0018:ffff88801722f650 EFLAGS: 00000292 RAX: ffff88800fad1b80 RBX: ffff88801722f750 RCX: ffff88801722f750 RDX: 0000000000000070 RSI: 0000000000000000 RDI: ffff88801722f6b8 RBP: ffff88800fad1b80 R08: 0000000000000001 R09: 0000000000000000 R10: ffff88800e85d460 R11: 00000000ffffffff R12: 0000000000000070 R13: 0000000000000000 R14: ffff88800fad1b80 R15: ffff88801722f6b8 __unwind_start+0x2e/0x7c0 arch_stack_walk+0x62/0xf0 stack_trace_save+0x8e/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_noprof+0x205/0x690 __alloc_object+0x2b/0x2c0 __create_object+0x1d/0x80 __kmalloc_cache_noprof+0x42a/0x690 kmem_cache_free+0x134/0x540 exit_mmap+0x47f/0xaa0 mmput+0xd5/0x390 do_exit+0x79d/0x2970 do_group_exit+0xd3/0x2a0 __x64_sys_exit_group+0x3e/0x50 x64_sys_call+0x18c5/0x18d0 do_syscall_64+0xbf/0x360 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff3d0e4fb19 Code: Unable to access opcode bytes at 0x7ff3d0e4faef. RSP: 002b:00007fff029df6d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007ff3d0e4fb19 RDX: 00007ff3d0e0272b RSI: ffffffffffffffbc RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000001b2cd2255c R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007fff029df7c0 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:ffff88806ce08740 EFLAGS: 00010012 RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002 RDX: ffff88800fad1b80 RSI: ffffffff818995b7 RDI: 0000000100000190 RBP: ffff88806ce089b0 R08: ffff88806ce313e8 R09: ffffe8ffffc16450 R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000 R13: 0000000000000014 R14: ffff88806ce313e8 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055556215ec58 CR3: 000000003d000000 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