Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 5830 Comm: syz-executor Not tainted 6.14.0-rc6-syzkaller-00103-g4003c9e78778 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:dst_dev_put+0x27/0x290 net/core/dst.c:146
Code: 90 90 90 f3 0f 1e fa 55 41 57 41 56 41 55 41 54 53 49 89 fd 49 bf 00 00 00 00 00 fc ff df e8 80 73 fa f7 4d 89 ec 49 c1 ec 03 <43> 80 3c 3c 00 74 08 4c 89 ef e8 1a 32 5f f8 4d 8b 75 00 49 8d 7d
RSP: 0018:ffffc90000a28b38 EFLAGS: 00010247
RAX: ffffffff89c76b30 RBX: 0000000000000004 RCX: ffff88803035bc00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 1ffffffff1ca7e4a R08: ffffffff8a705929 R09: 1ffff1100be374c0
R10: dffffc0000000000 R11: ffffed100be374c1 R12: 0000000000000000
R13: 0000000000000004 R14: 00000000fffffff8 R15: dffffc0000000000
FS: 0000555586a12500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f441e4d56c0 CR3: 00000000648d4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rt_fibinfo_free_cpus net/ipv4/fib_semantics.c:201 [inline]
fib_nh_common_release+0x1fc/0x420 net/ipv4/fib_semantics.c:212
fib6_info_destroy_rcu+0xc0/0x1b0 net/ipv6/ip6_fib.c:177
rcu_do_batch kernel/rcu/tree.c:2546 [inline]
rcu_core+0xaaa/0x17a0 kernel/rcu/tree.c:2802
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5855
Code: 2b 00 74 08 4c 89 f7 e8 7a c9 89 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc9000400efc0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000801e04 RCX: ffff88803035c6e8
RDX: dffffc0000000000 RSI: ffffffff8c2ac600 RDI: ffffffff8c802d60
RBP: ffffc9000400f110 R08: ffffffff94519847 R09: 1ffffffff28a3308
R10: dffffc0000000000 R11: fffffbfff28a3309 R12: 1ffff92000801e00
R13: dffffc0000000000 R14: ffffc9000400f020 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock_sched include/linux/rcupdate.h:941 [inline]
pfn_valid+0x113/0x450 include/linux/mmzone.h:2067
page_table_check_set+0x22/0x540 mm/page_table_check.c:110
__page_table_check_ptes_set+0x30f/0x410 mm/page_table_check.c:225
page_table_check_ptes_set include/linux/page_table_check.h:74 [inline]
set_ptes include/linux/pgtable.h:288 [inline]
__copy_present_ptes mm/memory.c:968 [inline]
copy_present_ptes mm/memory.c:1051 [inline]
copy_pte_range mm/memory.c:1174 [inline]
copy_pmd_range+0x4523/0x77b0 mm/memory.c:1262
copy_pud_range mm/memory.c:1299 [inline]
copy_p4d_range mm/memory.c:1323 [inline]
copy_page_range+0x99f/0xe90 mm/memory.c:1421
dup_mmap kernel/fork.c:748 [inline]
dup_mm kernel/fork.c:1700 [inline]
copy_mm+0x1269/0x2160 kernel/fork.c:1752
copy_process+0x17d1/0x3cf0 kernel/fork.c:2403
kernel_clone+0x223/0x870 kernel/fork.c:2815
__do_sys_clone kernel/fork.c:2958 [inline]
__se_sys_clone kernel/fork.c:2942 [inline]
__x64_sys_clone+0x267/0x2e0 kernel/fork.c:2942
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f441d7839d3
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffc54dd8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f441d7839d3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 0000555586a127d0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000555586a25590 R14: 00000000000245f7 R15: 00007ffc54dd81d0
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dst_dev_put+0x27/0x290 net/core/dst.c:146
Code: 90 90 90 f3 0f 1e fa 55 41 57 41 56 41 55 41 54 53 49 89 fd 49 bf 00 00 00 00 00 fc ff df e8 80 73 fa f7 4d 89 ec 49 c1 ec 03 <43> 80 3c 3c 00 74 08 4c 89 ef e8 1a 32 5f f8 4d 8b 75 00 49 8d 7d
RSP: 0018:ffffc90000a28b38 EFLAGS: 00010247
RAX: ffffffff89c76b30 RBX: 0000000000000004 RCX: ffff88803035bc00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 1ffffffff1ca7e4a R08: ffffffff8a705929 R09: 1ffff1100be374c0
R10: dffffc0000000000 R11: ffffed100be374c1 R12: 0000000000000000
R13: 0000000000000004 R14: 00000000fffffff8 R15: dffffc0000000000
FS: 0000555586a12500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f441e4d56c0 CR3: 00000000648d4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 90 nop
1: 90 nop
2: 90 nop
3: f3 0f 1e fa endbr64
7: 55 push %rbp
8: 41 57 push %r15
a: 41 56 push %r14
c: 41 55 push %r13
e: 41 54 push %r12
10: 53 push %rbx
11: 49 89 fd mov %rdi,%r13
14: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15
1b: fc ff df
1e: e8 80 73 fa f7 call 0xf7fa73a3
23: 4d 89 ec mov %r13,%r12
26: 49 c1 ec 03 shr $0x3,%r12
* 2a: 43 80 3c 3c 00 cmpb $0x0,(%r12,%r15,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 4c 89 ef mov %r13,%rdi
34: e8 1a 32 5f f8 call 0xf85f3253
39: 4d 8b 75 00 mov 0x0(%r13),%r14
3d: 49 rex.WB
3e: 8d .byte 0x8d
3f: 7d .byte 0x7d