general protection fault, probably for non-canonical address 0xe557e80010000052: 0000 [#1] PREEMPT SMP KASAN KASAN: maybe wild-memory-access in range [0x2abf600080000290-0x2abf600080000297] CPU: 2 PID: 9026 Comm: syz-executor.1 Not tainted 5.8.0-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 RIP: 0010:htab_elem_free kernel/bpf/hashtab.c:769 [inline] RIP: 0010:htab_elem_free_rcu+0x4a/0x110 kernel/bpf/hashtab.c:779 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bc 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b f8 48 8d 7d 18 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 82 00 00 00 44 8b 65 18 bf 05 RSP: 0018:ffffc90000540e48 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888060000010 RCX: 00000000ffd48f6f RDX: 0557ec0010000052 RSI: ffffffff81871c6e RDI: 2abf600080000293 RBP: 2abf60008000027b R08: 0000000000000000 R09: ffffffff8c5eca37 R10: fffffbfff18bd946 R11: 0000000000000000 R12: ffffc90000540ed8 R13: ffff888060000000 R14: 0000000000000000 R15: ffff888029e0c300 FS: 0000000000000000(0000) GS:ffff88802d000000(0000) knlGS:0000000000000000 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000000400200 CR3: 00000000617c7000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_do_batch kernel/rcu/tree.c:2428 [inline] rcu_core+0x5c7/0x1190 kernel/rcu/tree.c:2656 __do_softirq+0x2de/0xa24 kernel/softirq.c:298 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0x9d/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x1f3/0x230 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x51/0xf0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:write_comp_data+0x2f/0x80 kernel/kcov.c:218 Code: 05 d6 bd 8d 7e 65 48 8b 34 25 00 ff 01 00 a9 00 01 ff 00 74 0f f6 c4 01 74 59 8b 86 0c 14 00 00 85 c0 74 4f 8b 86 e8 13 00 00 <83> f8 03 75 44 48 8b 86 f0 13 00 00 8b b6 ec 13 00 00 4c 8b 00 48 RSP: 0018:ffffc90002207b58 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff888029e0c300 RCX: ffffffff8146955c RDX: 0000000000000000 RSI: ffff888029e0c300 RDI: 0000000000000007 RBP: ffffc90002201600 R08: 0000000000000000 R09: ffff8880294dcb07 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffffc90002200000 R14: dffffc0000000000 R15: ffff888029e0c830 stack_not_used include/linux/sched/task_stack.h:101 [inline] check_stack_usage kernel/exit.c:692 [inline] do_exit+0x187c/0x29f0 kernel/exit.c:849 do_group_exit+0x125/0x310 kernel/exit.c:903 get_signal+0x40b/0x1ee0 kernel/signal.c:2743 arch_do_signal+0x82/0x2520 arch/x86/kernel/signal.c:811 exit_to_user_mode_loop kernel/entry/common.c:135 [inline] exit_to_user_mode_prepare+0x172/0x1d0 kernel/entry/common.c:166 syscall_exit_to_user_mode+0x59/0x2b0 kernel/entry/common.c:241 __do_fast_syscall_32+0x63/0x80 arch/x86/entry/common.c:127 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:149 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f3f569 Code: Bad RIP value. RSP: 002b:00000000f553911c EFLAGS: 00000292 ORIG_RAX: 00000000000000f0 RAX: fffffffffffffe00 RBX: 000000000817af68 RCX: 0000000000000080 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000804c3b6 RBP: 0000000008158000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 55438b766f1c6b0d ]--- RIP: 0010:htab_elem_free kernel/bpf/hashtab.c:769 [inline] RIP: 0010:htab_elem_free_rcu+0x4a/0x110 kernel/bpf/hashtab.c:779 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bc 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b f8 48 8d 7d 18 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 82 00 00 00 44 8b 65 18 bf 05 RSP: 0018:ffffc90000540e48 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888060000010 RCX: 00000000ffd48f6f RDX: 0557ec0010000052 RSI: ffffffff81871c6e RDI: 2abf600080000293 RBP: 2abf60008000027b R08: 0000000000000000 R09: ffffffff8c5eca37 R10: fffffbfff18bd946 R11: 0000000000000000 R12: ffffc90000540ed8 R13: ffff888060000000 R14: 0000000000000000 R15: ffff888029e0c300 FS: 0000000000000000(0000) GS:ffff88802d000000(0000) knlGS:0000000000000000 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000000400200 CR3: 0000000009a8d000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400