syzbot

XFS (loop2): log mount failed
netlink: 8 bytes leftover after parsing attributes in process `syz.2.124'.
iommufd_mock iommufd_mock0: Adding to iommu group 0
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
Mem abort info:
  ESR = 0x0000000086000006
  EC = 0x21: IABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x06: level 2 translation fault
user pgtable: 4k pages, 48-bit VAs, pgdp=000000012e944000
[0000000000000000] pgd=08000001343cb403, p4d=08000001343cb403, pud=0800000116e98403, pmd=0000000000000000
Internal error: Oops: 0000000086000006 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 7427 Comm: syz.2.124 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 83400805 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=-c)
pc : 0x0
lr : ptp_clock_settime+0x148/0x264 drivers/ptp/ptp_clock.c:107
sp : ffff8000a4017c40
x29: ffff8000a4017c40 x28: ffff0000c6925c40 x27: 00000000fffffffb
x26: 1fffe00018d24b88 x25: 000000003b9aca00 x24: dfff800000000000
x23: 00000001ed5d7404 x22: 0000000000989680 x21: 0000000000000000
x20: ffff0000ccab2000 x19: ffff8000a4017d00 x18: 00000000ffffffff
x17: ffff800093303000 x16: ffff800082dec008 x15: 0000000000000001
x14: 1ffff00014802f70 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000080000 x10: 000000000000021e x9 : ffff8000a6e3c000
x8 : 0000000000000000 x7 : ffff8000877b0a00 x6 : 0000000000000000
x5 : ffff8000935c9220 x4 : 0000000000000002 x3 : ffff80008ae04378
x2 : 0000000000000001 x1 : ffff8000a4017d00 x0 : ffff0000ccab2000
Call trace:
 0x0 (P)
 pc_clock_settime+0x224/0x298 kernel/time/posix-clock.c:304
 __do_sys_clock_settime kernel/time/posix-timers.c:1131 [inline]
 __se_sys_clock_settime kernel/time/posix-timers.c:1115 [inline]
 __arm64_sys_clock_settime+0x208/0x254 kernel/time/posix-timers.c:1115
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x1e0/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
---[ end trace 0000000000000000 ]---