general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 0 PID: 3606 Comm: syz-executor643 Not tainted 6.1.0-rc3-syzkaller-00239-g10d916c86eca #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:dbgfs_rm_context mm/damon/dbgfs.c:928 [inline]
RIP: 0010:dbgfs_rm_context_write+0x2e3/0x4d0 mm/damon/dbgfs.c:971
Code: 00 4d 8b 36 4c 39 34 24 0f 84 e4 00 00 00 e8 54 c1 a7 ff 48 8b 44 24 18 49 63 d4 48 c1 e2 03 48 8d 34 10 48 89 f7 48 c1 ef 03 <80> 3c 2f 00 0f 85 6b 01 00 00 48 8b 05 3c 83 52 0f 4c 89 36 41 83
RSP: 0018:ffffc90003ddfcb0 EFLAGS: 00010212
RAX: 0000000000000010 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000002
RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88806f0a0000 R14: ffff88801b2d7608 R15: 0000000000000000
FS: 00005555574d5300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000f000 CR3: 000000007b257000 CR4: 0000000000350ef0
Call Trace:
<TASK>
full_proxy_write+0x118/0x180 fs/debugfs/file.c:236
vfs_write+0x2d7/0xdd0 fs/read_write.c:582
ksys_write+0x127/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fb20de92d69
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd47c11e88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb20de92d69
RDX: 000000000000fe6c RSI: 0000000020000080 RDI: 0000000000000003
RBP: 00007fb20de56f10 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb20de56fa0
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dbgfs_rm_context mm/damon/dbgfs.c:928 [inline]
RIP: 0010:dbgfs_rm_context_write+0x2e3/0x4d0 mm/damon/dbgfs.c:971
Code: 00 4d 8b 36 4c 39 34 24 0f 84 e4 00 00 00 e8 54 c1 a7 ff 48 8b 44 24 18 49 63 d4 48 c1 e2 03 48 8d 34 10 48 89 f7 48 c1 ef 03 <80> 3c 2f 00 0f 85 6b 01 00 00 48 8b 05 3c 83 52 0f 4c 89 36 41 83
RSP: 0018:ffffc90003ddfcb0 EFLAGS: 00010212
RAX: 0000000000000010 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000002
RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88806f0a0000 R14: ffff88801b2d7608 R15: 0000000000000000
FS: 00005555574d5300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000005decd0 CR3: 000000007b257000 CR4: 0000000000350ee0
----------------
Code disassembly (best guess):
0: 00 4d 8b add %cl,-0x75(%rbp)
3: 36 4c 39 34 24 cmp %r14,%ss:(%rsp)
8: 0f 84 e4 00 00 00 je 0xf2
e: e8 54 c1 a7 ff callq 0xffa7c167
13: 48 8b 44 24 18 mov 0x18(%rsp),%rax
18: 49 63 d4 movslq %r12d,%rdx
1b: 48 c1 e2 03 shl $0x3,%rdx
1f: 48 8d 34 10 lea (%rax,%rdx,1),%rsi
23: 48 89 f7 mov %rsi,%rdi
26: 48 c1 ef 03 shr $0x3,%rdi
* 2a: 80 3c 2f 00 cmpb $0x0,(%rdi,%rbp,1) <-- trapping instruction
2e: 0f 85 6b 01 00 00 jne 0x19f
34: 48 8b 05 3c 83 52 0f mov 0xf52833c(%rip),%rax # 0xf528377
3b: 4c 89 36 mov %r14,(%rsi)
3e: 41 rex.B
3f: 83 .byte 0x83