------------[ cut here ]------------
WARNING: CPU: 1 PID: 5361 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 5361 Comm: syz.2.309 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 0d f6 d8 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 90 f2 d8 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe
RSP: 0018:ffffc90000dd0d30 EFLAGS: 00010006
RAX: ffffffff819ed980 RBX: 0000000000000000 RCX: ffff88802014bb80
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1004029771
R10: ffffed1004029771 R11: 1ffff11004029770 R12: ffff88802014d308
R13: 00007ffffffff000 R14: ffffc90000dd0da8 R15: 0000000000000000
FS: 00007f12df67d6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fded4a2a000 CR3: 00000000208d8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
bpf_prog_f3c4d654356a1293+0x34/0x790
bpf_dispatcher_nop_func include/linux/bpf.h:888 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
bpf_trace_run2+0x15b/0x2d0 kernel/trace/bpf_trace.c:1915
trace_tlb_flush+0xe6/0x110 include/trace/events/tlb.h:38
flush_tlb_func+0x43f/0x510 arch/x86/mm/tlb.c:855
flush_smp_call_function_queue+0x2a9/0x760 kernel/smp.c:628
__sysvec_call_function_single+0x98/0x240 arch/x86/kernel/smp.c:248
instr_sysvec_call_function_single arch/x86/kernel/smp.c:243 [inline]
sysvec_call_function_single+0x98/0xc0 arch/x86/kernel/smp.c:243
asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:684
RIP: 0010:seqcount_lockdep_reader_access+0x17a/0x1c0 include/linux/seqlock.h:106
Code: ff 4d 85 ed 75 16 e8 e5 6a a3 ff eb 15 e8 de 6a a3 ff e8 19 86 cd 07 4d 85 ed 74 ea e8 cf 6a a3 ff fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 66 43 c7 44 27 09 00 00 43 c6 44 27 0b 00
RSP: 0018:ffffc900033df8a0 EFLAGS: 00000293
RAX: ffffffff81d46141 RBX: 0000000000000000 RCX: ffff88802014bb80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900033df958 R08: dffffc0000000000 R09: ffffed1017227662
R10: ffffed1017227662 R11: 1ffff11017227661 R12: dffffc0000000000
R13: 0000000000000200 R14: ffffffff81d454a4 R15: 1ffff9200067bf14
read_seqbegin include/linux/seqlock.h:897 [inline]
read_seqbegin_or_lock include/linux/seqlock.h:1191 [inline]
__dentry_path+0x134/0x5c0 fs/d_path.c:343
dentry_path_raw+0x80/0xc0 fs/d_path.c:369
tomoyo_get_dentry_path security/tomoyo/realpath.c:131 [inline]
tomoyo_get_local_path+0xce/0x740 security/tomoyo/realpath.c:157
tomoyo_realpath_from_path+0x2dc/0x610 security/tomoyo/realpath.c:-1
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_number_perm+0x1d5/0x5d0 security/tomoyo/file.c:723
security_file_ioctl+0x6c/0xa0 security/security.c:1555
__do_sys_ioctl fs/ioctl.c:868 [inline]
__se_sys_ioctl+0x48/0x170 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f12e141634b
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007f12df67d050 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f12e166d038 RCX: 00007f12e141634b
RDX: 0000000000000000 RSI: 0000000000006364 RDI: 00000000000000d8
RBP: 0000000000000000 R08: 00007ffc4bf484a7 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f12e166d038 R14: 00007ffc4bf483c0 R15: 00007ffc4bf484a8
----------------
Code disassembly (best guess):
0: ff 4d 85 decl -0x7b(%rbp)
3: ed in (%dx),%eax
4: 75 16 jne 0x1c
6: e8 e5 6a a3 ff call 0xffa36af0
b: eb 15 jmp 0x22
d: e8 de 6a a3 ff call 0xffa36af0
12: e8 19 86 cd 07 call 0x7cd8630
17: 4d 85 ed test %r13,%r13
1a: 74 ea je 0x6
1c: e8 cf 6a a3 ff call 0xffa36af0
21: fb sti
22: 48 c7 04 24 0e 36 e0 movq $0x45e0360e,(%rsp)
29: 45
* 2a: 4b c7 04 27 00 00 00 movq $0x0,(%r15,%r12,1) <-- trapping instruction
31: 00
32: 66 43 c7 44 27 09 00 movw $0x0,0x9(%r15,%r12,1)
39: 00
3a: 43 c6 44 27 0b 00 movb $0x0,0xb(%r15,%r12,1)