Oops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]
CPU: 0 UID: 0 PID: 24088 Comm: syz.1.4504 Not tainted 6.14.0-syzkaller-03576-g1e1ba8d23dae #0 PREEMPT(full)
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 40 b3 e5 f7 4d 89 ec 49 c1 ec 03 <43> 80 3c 3c 00 74 08 4c 89 ef e8 aa df 4d f8 4d 8b 75 00 49 8d 7d
RSP: 0018:ffffc90000007ad8 EFLAGS: 00010216
RAX: ffffffff89ddc350 RBX: 0000000000000028 RCX: ffff888012a45a00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000028
RBP: 1ffffffff1cab454 R08: ffffffff8a87cbf9 R09: 1ffff1100b1390c0
R10: dffffc0000000000 R11: ffffed100b1390c1 R12: 0000000000000005
R13: 0000000000000028 R14: 00000000fffffff8 R15: dffffc0000000000
FS: 00007f245f4926c0(0000) GS:ffff888125224000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdaa45d3d58 CR3: 0000000063de4000 CR4: 0000000000350ef0
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
fib_nh_release net/ipv4/fib_semantics.c:224 [inline]
free_fib_info_rcu+0xdc/0x4a0 net/ipv4/fib_semantics.c:236
rcu_do_batch kernel/rcu/tree.c:2568 [inline]
rcu_core+0xaae/0x17a0 kernel/rcu/tree.c:2824
handle_softirqs+0x2d8/0x9b0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0xfb/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:check_preemption_disabled+0x3d/0x120 lib/smp_processor_id.c:-1
Code: 93 65 49 8b 04 24 48 89 44 24 08 65 8b 1d 2f 72 24 07 65 8b 05 24 72 24 07 a9 ff ff ff 7f 74 24 65 49 8b 04 24 48 3b 44 24 08 <0f> 85 cc 00 00 00 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f e9
RSP: 0018:ffffc900037cefd0 EFLAGS: 00000246
RAX: 579e478aa219b100 RBX: 0000000000000000 RCX: ffff888012a45a00
RDX: ffff888012a45a00 RSI: ffffffff8c80efc0 RDI: ffffffff8c80ef80
RBP: dffffc0000000000 R08: ffffffff8c18d95a R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff933fc020
R13: 000000000000002b R14: ffff8880127398c2 R15: ffff888059a40a48
rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:736
rcu_read_lock_held_common kernel/rcu/update.c:109 [inline]
rcu_read_lock_held+0x15/0x50 kernel/rcu/update.c:349
xa_entry include/linux/xarray.h:1220 [inline]
xas_descend lib/xarray.c:208 [inline]
xas_load+0x47e/0x5c0 lib/xarray.c:246
filemap_get_entry+0x1f2/0x3b0 mm/filemap.c:1859
shmem_get_folio_gfp+0x288/0x1800 mm/shmem.c:2469
shmem_fault+0x223/0x5c0 mm/shmem.c:2746
__do_fault+0x137/0x390 mm/memory.c:4989
do_read_fault mm/memory.c:5409 [inline]
do_fault mm/memory.c:5543 [inline]
do_pte_missing mm/memory.c:4059 [inline]
handle_pte_fault mm/memory.c:5888 [inline]
__handle_mm_fault+0x40c8/0x6ef0 mm/memory.c:6031
handle_mm_fault+0x3e5/0x8d0 mm/memory.c:6200
faultin_page mm/gup.c:1196 [inline]
__get_user_pages+0x1adf/0x4180 mm/gup.c:1491
populate_vma_page_range+0x266/0x340 mm/gup.c:1929
__mm_populate+0x27d/0x460 mm/gup.c:2032
mm_populate include/linux/mm.h:3392 [inline]
vm_mmap_pgoff+0x390/0x530 mm/util.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f245e58d169
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f245f492038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f245e7a5fa0 RCX: 00007f245e58d169
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007f245e60e2a0 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f245e7a5fa0 R15: 00007ffc850283c8
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 40 b3 e5 f7 4d 89 ec 49 c1 ec 03 <43> 80 3c 3c 00 74 08 4c 89 ef e8 aa df 4d f8 4d 8b 75 00 49 8d 7d
RSP: 0018:ffffc90000007ad8 EFLAGS: 00010216
RAX: ffffffff89ddc350 RBX: 0000000000000028 RCX: ffff888012a45a00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000028
RBP: 1ffffffff1cab454 R08: ffffffff8a87cbf9 R09: 1ffff1100b1390c0
R10: dffffc0000000000 R11: ffffed100b1390c1 R12: 0000000000000005
R13: 0000000000000028 R14: 00000000fffffff8 R15: dffffc0000000000
FS: 00007f245f4926c0(0000) GS:ffff888125224000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdaa45d3d58 CR3: 0000000063de4000 CR4: 0000000000350ef0
----------------
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 40 b3 e5 f7 call 0xf7e5b363
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 aa df 4d f8 call 0xf84ddfe3
39: 4d 8b 75 00 mov 0x0(%r13),%r14
3d: 49 rex.WB
3e: 8d .byte 0x8d
3f: 7d .byte 0x7d