general protection fault, probably for non-canonical address 0xf1c1c50016dc0063: 0000 [#1] PREEMPT SMP KASAN KASAN: maybe wild-memory-access in range [0x8e0e4800b6e00318-0x8e0e4800b6e0031f] CPU: 1 PID: 26233 Comm: syz-executor.4 Not tainted 5.9.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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:ffffc90000da8e48 EFLAGS: 00010a07 RAX: dffffc0000000000 RBX: ffff888051000010 RCX: 00000000ffd0bec2 RDX: 11c1c90016dc0063 RSI: ffffffff8187116e RDI: 8e0e4800b6e0031d RBP: 8e0e4800b6e00305 R08: 0000000000000000 R09: ffffffff8c5f39f7 R10: fffffbfff18be73e R11: ffffffff89bd9988 R12: ffffc90000da8ed8 R13: ffff888051000000 R14: 0000000000000000 R15: ffff88806162e280 FS: 00007fcb292fb700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005616a3b7e7a0 CR3: 000000009fb5b000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 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:orc_ip arch/x86/kernel/unwind_orc.c:29 [inline] RIP: 0010:__orc_find+0x6f/0xf0 arch/x86/kernel/unwind_orc.c:51 Code: 72 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 48 48 63 03 48 01 RSP: 0018:ffffc90006297388 EFLAGS: 00000a06 RAX: 1ffffffff1600ad4 RBX: ffffffff8b0056a0 RCX: ffffffff86374a8e RDX: 0000000000000000 RSI: ffffffff8b7de356 RDI: ffffffff8b005694 RBP: ffffffff8b005694 R08: ffffffff8b7de386 R09: ffffffff8b7de356 R10: 000000000007201e R11: 0000000000111a33 R12: ffffffff8b0056b0 R13: ffffffff8b005694 R14: ffffffff8b005694 R15: dffffc0000000000 orc_find arch/x86/kernel/unwind_orc.c:172 [inline] unwind_next_frame+0x342/0x1f90 arch/x86/kernel/unwind_orc.c:449 arch_stack_walk+0x81/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:123 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:461 slab_post_alloc_hook mm/slab.h:518 [inline] slab_alloc mm/slab.c:3312 [inline] kmem_cache_alloc+0x138/0x3a0 mm/slab.c:3482 skb_clone+0x14f/0x3c0 net/core/skbuff.c:1449 ____bpf_clone_redirect net/core/filter.c:2176 [inline] bpf_clone_redirect+0xaf/0x420 net/core/filter.c:2163 bpf_prog_bb15b996d00816f9+0x5c/0xf00 bpf_dispatcher_nop_func include/linux/bpf.h:586 [inline] bpf_test_run+0x3bb/0xc70 net/bpf/test_run.c:49 bpf_prog_test_run_skb+0xa4c/0x1c10 net/bpf/test_run.c:496 bpf_prog_test_run kernel/bpf/syscall.c:2996 [inline] __do_sys_bpf+0x2426/0x4c20 kernel/bpf/syscall.c:4196 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5b9 Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fcb292fac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 0000000000001780 RCX: 000000000045d5b9 RDX: 0000000000000028 RSI: 0000000020000740 RDI: 000000000000000a RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007ffcfbb7bccf R14: 00007fcb292fb9c0 R15: 000000000118cf4c Modules linked in: ---[ end trace 788f5646a1e5c1ca ]--- 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:ffffc90000da8e48 EFLAGS: 00010a07 RAX: dffffc0000000000 RBX: ffff888051000010 RCX: 00000000ffd0bec2 RDX: 11c1c90016dc0063 RSI: ffffffff8187116e RDI: 8e0e4800b6e0031d RBP: 8e0e4800b6e00305 R08: 0000000000000000 R09: ffffffff8c5f39f7 R10: fffffbfff18be73e R11: ffffffff89bd9988 R12: ffffc90000da8ed8 R13: ffff888051000000 R14: 0000000000000000 R15: ffff88806162e280 FS: 00007fcb292fb700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005616a3b7e7a0 CR3: 000000009fb5b000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600