BUG: unable to handle page fault for address: ffffffff81933433
#PF: supervisor write access in kernel mode
#PF: error_code(0x0003) - permissions violation
PGD 5c11067 P4D 5c11067 PUD 5c12063 PMD 18001e1
Oops: 0003 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 1533 Comm: syz.1.289 Not tainted 5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:__hlist_del include/linux/list.h:791 [inline]
RIP: 0010:detach_timer kernel/time/timer.c:824 [inline]
RIP: 0010:expire_timers kernel/time/timer.c:1482 [inline]
RIP: 0010:__run_timers+0x759/0xb60 kernel/time/timer.c:1817
Code: 74 2e e8 aa dd 0e 00 49 83 c4 08 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 e7 e8 57 d8 3c 00 <4d> 89 2c 24 eb 05 e8 7c dd 0e 00 49 bd 00 00 00 00 00 fc ff df 42
RSP: 0018:ffff8881f6f09d40 EFLAGS: 00010046
RAX: 1ffffffff0326686 RBX: 1ffff1103c4c6639 RCX: dffffc0000000000
RDX: 0000000080000101 RSI: 0000000000000004 RDI: ffff8881f6f09cc0
RBP: ffff8881f6f09eb8 R08: 0000000000000004 R09: 0000000000000003
R10: ffffed103ede1398 R11: 1ffff1103ede1398 R12: ffffffff81933433
R13: ffff8881f6f09e00 R14: ffff8881e26331c8 R15: 1ffff1103c4c6638
FS: 00007f39892d16c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff81933433 CR3: 00000001cf0d2000 CR4: 00000000003406a0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1830
__do_softirq+0x236/0x660 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x197/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:539 [inline]
smp_apic_timer_interrupt+0x11d/0x490 arch/x86/kernel/apic/apic.c:1161
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
RIP: 0010:stack_trace_consume_entry+0x14b/0x250 kernel/stacktrace.c:93
Code: 84 c0 0f 85 e3 00 00 00 4c 8b 6d c8 45 89 75 00 48 8d 1c d3 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 75 bc 3d 00 <48> 8b 45 b0 48 89 03 41 8b 5d 00 48 8b 45 b8 42 0f b6 04 20 84 c0
RSP: 0018:ffff8881c816ec08 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 1ffff1103902ddc8 RBX: ffff8881c816ee40 RCX: dffffc0000000000
RDX: 0000000000000008 RSI: 000000000003cee0 RDI: 000000000003cee1
RBP: ffff8881c816ec58 R08: dffffc0000000000 R09: ffff8881c816ec68
R10: ffffed103902dd99 R11: 1ffff1103902dd8d R12: dffffc0000000000
R13: ffff8881c816ed30 R14: 0000000000000009 R15: 0000000000000008
arch_stack_walk+0x100/0x140 arch/x86/kernel/stacktrace.c:27
stack_trace_save+0xaa/0xf0 kernel/stacktrace.c:123
save_stack+0x97/0x560 mm/page_owner.c:122
__set_page_owner+0x39/0x1e0 mm/page_owner.c:191
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook mm/page_alloc.c:2165 [inline]
prep_new_page+0x35e/0x370 mm/page_alloc.c:2171
get_page_from_freelist+0x1296/0x1310 mm/page_alloc.c:3794
__alloc_pages_nodemask+0x202/0x4b0 mm/page_alloc.c:4894
__alloc_pages include/linux/gfp.h:503 [inline]
__alloc_pages_node include/linux/gfp.h:516 [inline]
alloc_pages_node include/linux/gfp.h:530 [inline]
alloc_zeroed_user_highpage_movable include/linux/highmem.h:211 [inline]
wp_page_copy+0x1ef/0x1630 mm/memory.c:2492
do_wp_page+0x926/0xac0 include/linux/spinlock.h:378
handle_pte_fault mm/memory.c:4075 [inline]
__handle_mm_fault mm/memory.c:4183 [inline]
handle_mm_fault+0x159b/0x3930 mm/memory.c:4220
do_user_addr_fault arch/x86/mm/fault.c:1444 [inline]
__do_page_fault+0x4c0/0xb20 arch/x86/mm/fault.c:1505
do_page_fault+0x37/0x320 arch/x86/mm/fault.c:1529
page_fault+0x2f/0x40 arch/x86/entry/entry_64.S:1206
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x30 arch/x86/lib/copy_user_64.S:205
Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 0f 1f 80 00 00 00 00 0f 01 cb 83 fa 40 0f 82 70 ff ff ff 89 d1 a4 31 c0 0f 01 ca c3 66 2e 0f 1f 84 00 00 00 00 00 89 d1 f3 a4
RSP: 0018:ffff8881c816f820 EFLAGS: 00050206
RAX: ffffffff821aad01 RBX: ffff8881c81e00a8 RCX: 0000000000003b50
RDX: 00000000000101d0 RSI: ffff8881c81ec728 RDI: 0000200000393000
RBP: ffff8881c816f8d0 R08: dffffc0000000000 R09: ffffed103903e04f
R10: 0000000000000000 R11: 0000000000002030 R12: 00000000000101d0
R13: 0000200000396b50 R14: ffff8881c81e00a8 R15: 00000000000101ff
copy_to_iter include/linux/uio.h:138 [inline]
simple_copy_to_iter+0x50/0x70 net/core/datagram.c:523
__skb_datagram_iter+0xdb/0x700 net/core/datagram.c:429
skb_copy_datagram_iter+0x47/0x1d0 net/core/datagram.c:537
skb_copy_datagram_msg include/linux/skbuff.h:3578 [inline]
tipc_recvstream+0x70c/0xe50 net/tipc/socket.c:1938
sock_recvmsg_nosec net/socket.c:891 [inline]
sock_recvmsg+0xfe/0x120 net/socket.c:909
____sys_recvmsg net/socket.c:2538 [inline]
___sys_recvmsg+0x2ee/0x890 net/socket.c:2579
__sys_recvmsg net/socket.c:2626 [inline]
__do_sys_recvmsg net/socket.c:2636 [inline]
__se_sys_recvmsg net/socket.c:2633 [inline]
__x64_sys_recvmsg+0x1e3/0x2b0 net/socket.c:2633
do_syscall_64+0xcf/0x170 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7f398ac68969
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:00007f39892d1038 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007f398ae8ffa0 RCX: 00007f398ac68969
RDX: 0000000000001f00 RSI: 0000200000000500 RDI: 0000000000000008
RBP: 00007f398aceaab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f398ae8ffa0 R15: 00007ffefeac3bb8
Modules linked in:
CR2: ffffffff81933433
---[ end trace 9c613c1ee92cce0a ]---
RIP: 0010:__hlist_del include/linux/list.h:791 [inline]
RIP: 0010:detach_timer kernel/time/timer.c:824 [inline]
RIP: 0010:expire_timers kernel/time/timer.c:1482 [inline]
RIP: 0010:__run_timers+0x759/0xb60 kernel/time/timer.c:1817
Code: 74 2e e8 aa dd 0e 00 49 83 c4 08 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 e7 e8 57 d8 3c 00 <4d> 89 2c 24 eb 05 e8 7c dd 0e 00 49 bd 00 00 00 00 00 fc ff df 42
RSP: 0018:ffff8881f6f09d40 EFLAGS: 00010046
RAX: 1ffffffff0326686 RBX: 1ffff1103c4c6639 RCX: dffffc0000000000
RDX: 0000000080000101 RSI: 0000000000000004 RDI: ffff8881f6f09cc0
RBP: ffff8881f6f09eb8 R08: 0000000000000004 R09: 0000000000000003
R10: ffffed103ede1398 R11: 1ffff1103ede1398 R12: ffffffff81933433
R13: ffff8881f6f09e00 R14: ffff8881e26331c8 R15: 1ffff1103c4c6638
FS: 00007f39892d16c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff81933433 CR3: 00000001cf0d2000 CR4: 00000000003406a0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
0: 74 2e je 0x30
2: e8 aa dd 0e 00 call 0xeddb1
7: 49 83 c4 08 add $0x8,%r12
b: 4c 89 e0 mov %r12,%rax
e: 48 c1 e8 03 shr $0x3,%rax
12: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx
19: fc ff df
1c: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1)
20: 74 08 je 0x2a
22: 4c 89 e7 mov %r12,%rdi
25: e8 57 d8 3c 00 call 0x3cd881
* 2a: 4d 89 2c 24 mov %r13,(%r12) <-- trapping instruction
2e: eb 05 jmp 0x35
30: e8 7c dd 0e 00 call 0xeddb1
35: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13
3c: fc ff df
3f: 42 rex.X