general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047] CPU: 1 PID: 18481 Comm: syz-executor.5 Not tainted 5.13.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:dst_dev_put+0x1f/0x2a0 net/core/dst.c:156 Code: 1f 84 00 00 00 00 00 0f 1f 40 00 41 55 41 54 55 53 48 89 fb e8 42 e7 65 fa 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 61 02 00 00 48 8d 7b 3a 4c 8b 23 48 b8 00 00 00 RSP: 0018:ffffc90000dc0d80 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: 0000000000000046 RCX: 0000000000000100 RDX: 0000000000000008 RSI: ffffffff870ef54e RDI: 0000000000000046 RBP: 0000000000000001 R08: 0000000000000001 R09: ffff88807c5f856b R10: ffffffff87a05c05 R11: 0000000000000000 R12: 0000000000000007 R13: fffffbfff1b93374 R14: 0000607f4603d1e0 R15: 0000000000000046 FS: 00007f9b8fd38700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000004 CR3: 000000006a95e000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rt_fibinfo_free_cpus.part.0+0xda/0x140 net/ipv4/fib_semantics.c:202 rt_fibinfo_free_cpus net/ipv4/fib_semantics.c:194 [inline] fib_nh_common_release+0x10c/0x350 net/ipv4/fib_semantics.c:215 fib6_info_destroy_rcu+0x187/0x210 net/ipv6/ip6_fib.c:175 rcu_do_batch kernel/rcu/tree.c:2558 [inline] rcu_core+0x7ab/0x13b0 kernel/rcu/tree.c:2793 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559 invoke_softirq kernel/softirq.c:433 [inline] __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647 RIP: 0010:lookup_page_ext+0x3/0x100 mm/page_ext.c:197 Code: 4c 89 e0 5d 41 5c c3 48 89 ef e8 a8 33 f7 ff eb c1 48 c7 c7 80 c0 7c 90 e8 9a 33 f7 ff e9 7c ff ff ff 0f 1f 44 00 00 41 54 55 <53> 48 89 fb e8 94 ec b1 ff 48 c7 c0 80 c0 7c 90 48 bf 00 00 00 00 RSP: 0018:ffffc90001acf490 EFLAGS: 00000212 RAX: 0000000000002fcc RBX: ffff88813fffbcb8 RCX: ffffc90014531000 RDX: 0000000000040000 RSI: ffffffff81c1b13c RDI: ffffea0000eb08c0 RBP: ffffea0000eb08c0 R08: 0000000000000001 R09: ffffed1007584600 R10: fffff940001d611e R11: 0000000000000000 R12: ffff8880b9d3ab70 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88813fffb700 __set_page_owner+0x24/0x290 mm/page_owner.c:175 prep_new_page mm/page_alloc.c:2358 [inline] get_page_from_freelist+0x1034/0x2bf0 mm/page_alloc.c:3994 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5200 alloc_pages+0x18c/0x2a0 mm/mempolicy.c:2272 __page_cache_alloc mm/filemap.c:1005 [inline] __page_cache_alloc+0x303/0x3a0 mm/filemap.c:990 pagecache_get_page+0x38f/0x18d0 mm/filemap.c:1885 grab_cache_page_write_begin+0x64/0x90 mm/filemap.c:3610 ext4_da_write_begin+0x35c/0x1160 fs/ext4/inode.c:2984 generic_perform_write+0x20a/0x4f0 mm/filemap.c:3660 ext4_buffered_write_iter+0x244/0x4d0 fs/ext4/file.c:269 ext4_file_write_iter+0x423/0x14e0 fs/ext4/file.c:680 call_write_iter include/linux/fs.h:2114 [inline] new_sync_write+0x426/0x650 fs/read_write.c:518 vfs_write+0x796/0xa30 fs/read_write.c:605 ksys_write+0x12d/0x250 fs/read_write.c:658 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9b8fd38188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000032600 RSI: 0000000020001580 RDI: 0000000000000006 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffce304fbef R14: 00007f9b8fd38300 R15: 0000000000022000 Modules linked in: ---[ end trace efd73e68a5ea39bc ]--- RIP: 0010:dst_dev_put+0x1f/0x2a0 net/core/dst.c:156 Code: 1f 84 00 00 00 00 00 0f 1f 40 00 41 55 41 54 55 53 48 89 fb e8 42 e7 65 fa 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 61 02 00 00 48 8d 7b 3a 4c 8b 23 48 b8 00 00 00 RSP: 0018:ffffc90000dc0d80 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: 0000000000000046 RCX: 0000000000000100 RDX: 0000000000000008 RSI: ffffffff870ef54e RDI: 0000000000000046 RBP: 0000000000000001 R08: 0000000000000001 R09: ffff88807c5f856b R10: ffffffff87a05c05 R11: 0000000000000000 R12: 0000000000000007 R13: fffffbfff1b93374 R14: 0000607f4603d1e0 R15: 0000000000000046 FS: 00007f9b8fd38700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000004 CR3: 000000006a95e000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400