general protection fault in worker

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	general protection fault in worker_thread (2) io-uring	syz			1	331d	327d	0/26	auto-obsoleted due to no activity on 2023/09/29 13:47
android-5-15	KASAN: use-after-free Read in worker_thread missing-backport origin:downstream	C	unreliable	error	27	4d13h	579d	0/2	upstream: reported C repro on 2022/10/16 06:28
upstream	KMSAN: uninit-value in worker_thread (3) ext4				2	959d	1042d	0/26	auto-closed as invalid on 2021/12/30 14:37
android-6-1	KASAN: use-after-free Read in worker_thread missing-backport origin:lts	C	error		23	5d05h	338d	0/2	upstream: reported C repro on 2023/06/14 05:51

general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] CPU: 0 PID: 20509 Comm: kworker/0:37 Not tainted 6.0.0-rc7-syzkaller-00220-gffb4d94b4314 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:__lock_acquire+0xd83/0x56d0 kernel/locking/lockdep.c:4923 Code: 9c 0e 41 bf 01 00 00 00 0f 86 c8 00 00 00 89 05 83 4d 9c 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 4e 31 00 00 49 81 3e 60 94 51 8f 0f 84 4c f3 ff RSP: 0018:ffffc90007dbfbe8 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 1ffff92000fb7fac RCX: 0000000000000000 RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: fffffbfff1bbc82a R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880744aa000 R14: 0000000000000018 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1e130c2690 CR3: 000000001e664000 CR4: 00000000003506f0 Call Trace: <TASK> lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0x32/0x50 kernel/locking/spinlock.c:170 worker_thread+0x169/0x1080 kernel/workqueue.c:2386 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0xd83/0x56d0 kernel/locking/lockdep.c:4923 Code: 9c 0e 41 bf 01 00 00 00 0f 86 c8 00 00 00 89 05 83 4d 9c 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 4e 31 00 00 49 81 3e 60 94 51 8f 0f 84 4c f3 ff RSP: 0018:ffffc90007dbfbe8 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 1ffff92000fb7fac RCX: 0000000000000000 RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: fffffbfff1bbc82a R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880744aa000 R14: 0000000000000018 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1e130c2690 CR3: 000000001e664000 CR4: 00000000003506f0 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 41 bf 01 00 00 00 mov $0x1,%r15d 6: 0f 86 c8 00 00 00 jbe 0xd4 c: 89 05 83 4d 9c 0e mov %eax,0xe9c4d83(%rip) # 0xe9c4d95 12: e9 bd 00 00 00 jmpq 0xd4 17: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1e: fc ff df 21: 4c 89 f2 mov %r14,%rdx 24: 48 c1 ea 03 shr $0x3,%rdx * 28: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2c: 0f 85 4e 31 00 00 jne 0x3180 32: 49 81 3e 60 94 51 8f cmpq $0xffffffff8f519460,(%r14) 39: 0f .byte 0xf 3a: 84 4c f3 ff test %cl,-0x1(%rbx,%rsi,8)