general protection fault, probably for non-canonical address 0xdffffc0000000014: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000000a0-0x00000000000000a7] CPU: 1 PID: 2095 Comm: syz-executor.1 Not tainted 5.17.0-rc1-syzkaller-00436-g24f4db1f3a27 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:dequeue_load_avg kernel/sched/fair.c:3031 [inline] RIP: 0010:reweight_entity+0x11c/0x570 kernel/sched/fair.c:3053 Code: 03 80 3c 11 00 0f 85 03 04 00 00 48 8d bd a0 00 00 00 4c 8b a3 e0 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 c8 03 00 00 48 8b 95 a0 00 00 00 4c 29 e2 0f 82 RSP: 0018:ffffc9000e76fd20 EFLAGS: 00010006 RAX: 0000000000003c00 RBX: ffff88807321ba80 RCX: 0000000000000014 RDX: dffffc0000000000 RSI: ffff88807321ba80 RDI: 00000000000000a0 RBP: 0000000000000000 R08: ffff88807321be0c R09: ffff888033a08000 R10: ffff88807321bc90 R11: ffff88807321ba70 R12: 0000000000000400 R13: ffff88807321bab8 R14: 1ffff92001cedfba R15: ffff8880b9d3a998 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0063) knlGS:00000000f58a2b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000020001f80 CR3: 0000000045b1a000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: reweight_task+0x94/0x160 kernel/sched/fair.c:3078 set_load_weight kernel/sched/core.c:1236 [inline] set_user_nice.part.0+0x837/0x1120 kernel/sched/core.c:6924 set_one_prio+0x241/0x340 kernel/sys.c:198 __do_sys_setpriority+0x302/0xb80 kernel/sys.c:239 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf6ea8549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f58a25cc EFLAGS: 00000296 ORIG_RAX: 0000000000000061 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000005e42 RDX: 0000000000008000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dequeue_load_avg kernel/sched/fair.c:3031 [inline] RIP: 0010:reweight_entity+0x11c/0x570 kernel/sched/fair.c:3053 Code: 03 80 3c 11 00 0f 85 03 04 00 00 48 8d bd a0 00 00 00 4c 8b a3 e0 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 c8 03 00 00 48 8b 95 a0 00 00 00 4c 29 e2 0f 82 RSP: 0018:ffffc9000e76fd20 EFLAGS: 00010006 RAX: 0000000000003c00 RBX: ffff88807321ba80 RCX: 0000000000000014 RDX: dffffc0000000000 RSI: ffff88807321ba80 RDI: 00000000000000a0 RBP: 0000000000000000 R08: ffff88807321be0c R09: ffff888033a08000 R10: ffff88807321bc90 R11: ffff88807321ba70 R12: 0000000000000400 R13: ffff88807321bab8 R14: 1ffff92001cedfba R15: ffff8880b9d3a998 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0063) knlGS:00000000f58a2b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000020001f80 CR3: 0000000045b1a000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 03 80 3c 11 00 0f add 0xf00113c(%rax),%eax 6: 85 03 test %eax,(%rbx) 8: 04 00 add $0x0,%al a: 00 48 8d add %cl,-0x73(%rax) d: bd a0 00 00 00 mov $0xa0,%ebp 12: 4c 8b a3 e0 00 00 00 mov 0xe0(%rbx),%r12 19: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 20: fc ff df 23: 48 89 f9 mov %rdi,%rcx 26: 48 c1 e9 03 shr $0x3,%rcx * 2a: 80 3c 11 00 cmpb $0x0,(%rcx,%rdx,1) <-- trapping instruction 2e: 0f 85 c8 03 00 00 jne 0x3fc 34: 48 8b 95 a0 00 00 00 mov 0xa0(%rbp),%rdx 3b: 4c 29 e2 sub %r12,%rdx 3e: 0f .byte 0xf 3f: 82 .byte 0x82