kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 4253 Comm: syz-executor.0 Not tainted 5.2.0-rc3+ #33 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:dst_dev_put+0x24/0x280 net/core/dst.c:156 Code: 90 90 90 90 90 90 55 48 89 e5 41 56 41 55 41 54 53 48 89 fb e8 4d 78 eb fb 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 e1 01 00 00 48 8d 7b 3a 4c 8b 23 48 b8 00 00 00 RSP: 0018:ffff8880ae909ce8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000006e40 RCX: 1ffffffff1301e3e RDX: 0000000000000dc8 RSI: ffffffff85852fb3 RDI: 0000000000006e40 RBP: ffff8880ae909d08 R08: ffff88806562e480 R09: ffff88806562ede8 R10: ffff88806562edc8 R11: ffff88806562e480 R12: 0000000000000000 R13: 0000000000000007 R14: 0000000000006e40 R15: 0000607f51432278 FS: 0000555555645940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000738008 CR3: 000000008cc6d000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rt_fibinfo_free_cpus.part.0+0xdb/0x130 net/ipv4/fib_semantics.c:202 rt_fibinfo_free_cpus net/ipv4/fib_semantics.c:194 [inline] fib_nh_common_release+0x107/0x280 net/ipv4/fib_semantics.c:215 fib_nh_release net/ipv4/fib_semantics.c:227 [inline] free_fib_info_rcu+0x1f0/0x670 net/ipv4/fib_semantics.c:239 __rcu_reclaim kernel/rcu/rcu.h:222 [inline] rcu_do_batch kernel/rcu/tree.c:2092 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2310 [inline] rcu_core+0xba5/0x1500 kernel/rcu/tree.c:2291 __do_softirq+0x25c/0x94c kernel/softirq.c:293 invoke_softirq kernel/softirq.c:374 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:414 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1068 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:806 RIP: 0010:__read_once_size include/linux/compiler.h:194 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:70 [inline] RIP: 0010:write_comp_data+0x17/0x70 kernel/kcov.c:123 Code: c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 5d c3 0f 1f 00 65 4c 8b 04 25 c0 fd 01 00 65 8b 05 28 55 91 7e a9 00 01 1f 00 75 51 <41> 8b 80 e0 12 00 00 83 f8 03 75 45 49 8b 80 e8 12 00 00 45 8b 80 RSP: 0018:ffff88806928f8f0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000080000002 RBX: ffffea000228cf40 RCX: ffffffff819ada00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000007 RBP: ffff88806928f8f8 R08: ffff88806562e480 R09: fffff940004519ef R10: fffff940004519ee R11: ffffea000228cf73 R12: dead000000000100 R13: 800000008a33d007 R14: 0000000000000010 R15: 0000000000000000 compound_head include/linux/page-flags.h:174 [inline] PageSwapBacked include/linux/page-flags.h:336 [inline] mm_counter_file include/linux/mm.h:1709 [inline] mm_counter include/linux/mm.h:1718 [inline] copy_one_pte mm/memory.c:797 [inline] copy_pte_range mm/memory.c:857 [inline] copy_pmd_range mm/memory.c:908 [inline] copy_pud_range mm/memory.c:942 [inline] copy_p4d_range mm/memory.c:964 [inline] copy_page_range+0x1030/0x1fc0 mm/memory.c:1026 dup_mmap kernel/fork.c:588 [inline] dup_mm+0x9c4/0x13b0 kernel/fork.c:1341 copy_mm kernel/fork.c:1397 [inline] copy_process.part.0+0x2cde/0x6790 kernel/fork.c:2032 copy_process kernel/fork.c:1800 [inline] _do_fork+0x25d/0xfe0 kernel/fork.c:2369 __do_sys_clone kernel/fork.c:2476 [inline] __se_sys_clone kernel/fork.c:2470 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2470 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45789a Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00 RSP: 002b:00007fffc13ee120 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007fffc13ee120 RCX: 000000000045789a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007fffc13ee160 R08: 0000000000000001 R09: 0000555555645940 R10: 0000555555645c10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 00007fffc13ee1b0 Modules linked in: ---[ end trace 06f564a31f59a4f6 ]--- RIP: 0010:dst_dev_put+0x24/0x280 net/core/dst.c:156 Code: 90 90 90 90 90 90 55 48 89 e5 41 56 41 55 41 54 53 48 89 fb e8 4d 78 eb fb 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 e1 01 00 00 48 8d 7b 3a 4c 8b 23 48 b8 00 00 00 RSP: 0018:ffff8880ae909ce8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000006e40 RCX: 1ffffffff1301e3e RDX: 0000000000000dc8 RSI: ffffffff85852fb3 RDI: 0000000000006e40 RBP: ffff8880ae909d08 R08: ffff88806562e480 R09: ffff88806562ede8 R10: ffff88806562edc8 R11: ffff88806562e480 R12: 0000000000000000 R13: 0000000000000007 R14: 0000000000006e40 R15: 0000607f51432278 FS: 0000555555645940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000738008 CR3: 000000008cc6d000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400