list_del corruption. next->prev should be ffff88805eb45048, but was ffff888061009048. (next=ffff88807ea7a5e8) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:65! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 2 PID: 8995 Comm: syz-executor.2 Not tainted 6.6.0-syzkaller-14500-g1c41041124bd #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:__list_del_entry_valid_or_report+0x133/0x1b0 lib/list_debug.c:65 Code: e8 72 98 03 fd 0f 0b 48 89 c2 48 c7 c7 20 84 2e 8b e8 61 98 03 fd 0f 0b 48 89 d1 48 c7 c7 a0 84 2e 8b 48 89 c2 e8 4d 98 03 fd <0f> 0b 48 89 34 24 e8 12 c6 77 fd 48 8b 34 24 e9 e3 fe ff ff 48 89 RSP: 0018:ffffc9002994fde8 EFLAGS: 00010082 RAX: 000000000000006d RBX: ffff88805eb44000 RCX: ffffffff816b6ea9 RDX: 0000000000000000 RSI: ffffffff816c0332 RDI: 0000000000000005 RBP: ffff888060ece400 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000001 R11: 6c65645f7473696c R12: 0000000000000246 R13: ffff88805eb45048 R14: ffff88805eb45008 R15: ffff88805eb45050 FS: 0000000000000000(0000) GS:ffff88802c800000(0063) knlGS:00000000565a8400 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000030624000 CR3: 000000005d332000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry_valid include/linux/list.h:124 [inline] __list_del_entry include/linux/list.h:215 [inline] list_del include/linux/list.h:229 [inline] ptp_release+0xc4/0x2b0 drivers/ptp/ptp_chardev.c:147 posix_clock_release+0xa4/0x160 kernel/time/posix-clock.c:157 __fput+0x270/0xbb0 fs/file_table.c:394 __fput_sync+0x47/0x50 fs/file_table.c:475 __do_sys_close fs/open.c:1590 [inline] __se_sys_close fs/open.c:1575 [inline] __ia32_sys_close+0x87/0xf0 fs/open.c:1575 do_syscall_32_irqs_on arch/x86/entry/common.c:164 [inline] __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:230 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:255 entry_SYSENTER_compat_after_hwframe+0x70/0x7a RIP: 0023:0xf7f63579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffd5bf20 EFLAGS: 00000293 ORIG_RAX: 0000000000000006 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000565a8400 RDX: 0000000000000000 RSI: 00000000f7353ff4 RDI: 0000000000000000 RBP: 00000000f7200000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del_entry_valid_or_report+0x133/0x1b0 lib/list_debug.c:65 Code: e8 72 98 03 fd 0f 0b 48 89 c2 48 c7 c7 20 84 2e 8b e8 61 98 03 fd 0f 0b 48 89 d1 48 c7 c7 a0 84 2e 8b 48 89 c2 e8 4d 98 03 fd <0f> 0b 48 89 34 24 e8 12 c6 77 fd 48 8b 34 24 e9 e3 fe ff ff 48 89 RSP: 0018:ffffc9002994fde8 EFLAGS: 00010082 RAX: 000000000000006d RBX: ffff88805eb44000 RCX: ffffffff816b6ea9 RDX: 0000000000000000 RSI: ffffffff816c0332 RDI: 0000000000000005 RBP: ffff888060ece400 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000001 R11: 6c65645f7473696c R12: 0000000000000246 R13: ffff88805eb45048 R14: ffff88805eb45008 R15: ffff88805eb45050 FS: 0000000000000000(0000) GS:ffff88802c800000(0063) knlGS:00000000565a8400 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000030624000 CR3: 000000005d332000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi