Hello, syzbot found the following issue on: HEAD commit: ea586a076e8a Add linux-next specific files for 20211224 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=124161edb00000 kernel config: https://syzkaller.appspot.com/x/.config?x=a9c4e3dde2c568fb dashboard link: https://syzkaller.appspot.com/bug?extid=953a33deaf38c66a915e compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+953a33deaf38c66a915e@xxxxxxxxxxxxxxxxxxxxxxxxx general protection fault, probably for non-canonical address 0xdffffc0000000011: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f] CPU: 0 PID: 9653 Comm: syz-executor.3 Not tainted 5.16.0-rc6-next-20211224-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_acquire+0xd7a/0x5470 kernel/locking/lockdep.c:4897 Code: 13 0e 41 bf 01 00 00 00 0f 86 c8 00 00 00 89 05 ac c8 13 0e e9 bd 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 9f 2e 00 00 49 81 3e 60 94 1b 8f 0f 84 52 f3 ff RSP: 0018:ffffc90005647bc8 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 1ffff92000ac8fa4 RCX: 1ffff92000ac8f8b RDX: 0000000000000011 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: fffffbfff1b2663a R11: 0000000000000001 R12: 0000000000000000 R13: ffff888045f657c0 R14: 0000000000000088 R15: 0000000000000000 FS: 0000555555772400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ef2e000 CR3: 00000000131f3000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> lock_acquire kernel/locking/lockdep.c:5639 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162 hidraw_release+0xca/0x370 drivers/hid/hidraw.c:352 __fput+0x286/0x9f0 fs/file_table.c:311 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fcce3b0fadb Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44 RSP: 002b:00007fff23159320 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007fcce3b0fadb RDX: 0000000000000000 RSI: 00007fcce2cd5760 RDI: 0000000000000004 RBP: 00007fcce3c71960 R08: 0000000000000000 R09: 00000000355938f3 R10: 0000000000000000 R11: 0000000000000293 R12: 000000000011a408 R13: 00007fff23159420 R14: 00007fcce3c70100 R15: 0000000000000032 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0xd7a/0x5470 kernel/locking/lockdep.c:4897 Code: 13 0e 41 bf 01 00 00 00 0f 86 c8 00 00 00 89 05 ac c8 13 0e e9 bd 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 9f 2e 00 00 49 81 3e 60 94 1b 8f 0f 84 52 f3 ff RSP: 0018:ffffc90005647bc8 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 1ffff92000ac8fa4 RCX: 1ffff92000ac8f8b RDX: 0000000000000011 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: fffffbfff1b2663a R11: 0000000000000001 R12: 0000000000000000 R13: ffff888045f657c0 R14: 0000000000000088 R15: 0000000000000000 FS: 0000555555772400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ef2e000 CR3: 00000000131f3000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 13 0e adc (%rsi),%ecx 2: 41 bf 01 00 00 00 mov $0x1,%r15d 8: 0f 86 c8 00 00 00 jbe 0xd6 e: 89 05 ac c8 13 0e mov %eax,0xe13c8ac(%rip) # 0xe13c8c0 14: e9 bd 00 00 00 jmpq 0xd6 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 4c 89 f2 mov %r14,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 9f 2e 00 00 jne 0x2ed3 34: 49 81 3e 60 94 1b 8f cmpq $0xffffffff8f1b9460,(%r14) 3b: 0f .byte 0xf 3c: 84 52 f3 test %dl,-0xd(%rdx) 3f: ff .byte 0xff --- This report is generated by a bot. 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