Hello, syzbot found the following issue on: HEAD commit: 888cf78c29e2 Merge tag 'iommu-fix-v6.6-rc7' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10339673680000 kernel config: https://syzkaller.appspot.com/x/.config?x=7d1f30869bb78ec6 dashboard link: https://syzkaller.appspot.com/bug?extid=b408cd9b40ec25380ee1 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=165bbce3680000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/2e776d64243c/disk-888cf78c.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/9ce776a2bcfc/vmlinux-888cf78c.xz kernel image: https://storage.googleapis.com/syzbot-assets/86a6c193c013/bzImage-888cf78c.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/8021bba287f0/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b408cd9b40ec25380ee1@xxxxxxxxxxxxxxxxxxxxxxxxx general protection fault, probably for non-canonical address 0xdffffc003ffff113: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x00000001ffff8898-0x00000001ffff889f] CPU: 1 PID: 5308 Comm: syz-executor.4 Not tainted 6.6.0-rc7-syzkaller-00142-g888cf78c29e2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:lookup_object lib/debugobjects.c:195 [inline] RIP: 0010:lookup_object_or_alloc lib/debugobjects.c:564 [inline] RIP: 0010:__debug_object_init+0xf3/0x2b0 lib/debugobjects.c:634 Code: d8 48 c1 e8 03 42 80 3c 20 00 0f 85 85 01 00 00 48 8b 1b 48 85 db 0f 84 9f 00 00 00 48 8d 7b 18 83 c5 01 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 4c 01 00 00 4c 3b 73 18 75 c3 48 8d 7b 10 48 RSP: 0018:ffffc900050e7d08 EFLAGS: 00010012 RAX: 000000003ffff113 RBX: 00000001ffff8880 RCX: ffffffff8169123e RDX: 1ffffffff249b149 RSI: 0000000000000004 RDI: 00000001ffff8898 RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000216 R10: 0000000000000003 R11: 0000000000000000 R12: dffffc0000000000 R13: ffffffff924d8a48 R14: ffffc900050e7d90 R15: ffffffff924d8a50 FS: 0000555556eec480(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa23ab065ee CR3: 000000007e5c1000 CR4: 0000000000350ee0 Call Trace: <TASK> hrtimer_init_sleeper_on_stack kernel/time/hrtimer.c:447 [inline] hrtimer_nanosleep+0x122/0x440 kernel/time/hrtimer.c:2098 common_nsleep+0xa1/0xc0 kernel/time/posix-timers.c:1350 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1396 [inline] __se_sys_clock_nanosleep kernel/time/posix-timers.c:1373 [inline] __x64_sys_clock_nanosleep+0x344/0x490 kernel/time/posix-timers.c:1373 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff1a56a7ef5 Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 f6 b9 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 4f ba ff ff 48 8b 04 24 48 83 c4 28 f7 d8 RSP: 002b:00007ffe80c6ee30 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 00007ff1a579bf80 RCX: 00007ff1a56a7ef5 RDX: 00007ffe80c6ee70 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ff1a579d980 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000fef3 R13: ffffffffffffffff R14: 00007ff1a5200000 R15: 000000000000fbb2 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:lookup_object lib/debugobjects.c:195 [inline] RIP: 0010:lookup_object_or_alloc lib/debugobjects.c:564 [inline] RIP: 0010:__debug_object_init+0xf3/0x2b0 lib/debugobjects.c:634 Code: d8 48 c1 e8 03 42 80 3c 20 00 0f 85 85 01 00 00 48 8b 1b 48 85 db 0f 84 9f 00 00 00 48 8d 7b 18 83 c5 01 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 4c 01 00 00 4c 3b 73 18 75 c3 48 8d 7b 10 48 RSP: 0018:ffffc900050e7d08 EFLAGS: 00010012 RAX: 000000003ffff113 RBX: 00000001ffff8880 RCX: ffffffff8169123e RDX: 1ffffffff249b149 RSI: 0000000000000004 RDI: 00000001ffff8898 RBP: 0000000000000003 R08: 0000000000000001 R09: 0000000000000216 R10: 0000000000000003 R11: 0000000000000000 R12: dffffc0000000000 R13: ffffffff924d8a48 R14: ffffc900050e7d90 R15: ffffffff924d8a50 FS: 0000555556eec480(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa23ab065ee CR3: 000000007e5c1000 CR4: 0000000000350ee0 ---------------- Code disassembly (best guess): 0: d8 48 c1 fmuls -0x3f(%rax) 3: e8 03 42 80 3c call 0x3c80420b 8: 20 00 and %al,(%rax) a: 0f 85 85 01 00 00 jne 0x195 10: 48 8b 1b mov (%rbx),%rbx 13: 48 85 db test %rbx,%rbx 16: 0f 84 9f 00 00 00 je 0xbb 1c: 48 8d 7b 18 lea 0x18(%rbx),%rdi 20: 83 c5 01 add $0x1,%ebp 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 0f 85 4c 01 00 00 jne 0x181 35: 4c 3b 73 18 cmp 0x18(%rbx),%r14 39: 75 c3 jne 0xfffffffe 3b: 48 8d 7b 10 lea 0x10(%rbx),%rdi 3f: 48 rex.W --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
