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linux/drivers/ptp
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I Viswanath 8dd4460563 ptp: Add a upper bound on max_vclocks 
[ Upstream commit e9f35294e1 ]

syzbot reported WARNING in max_vclocks_store.

This occurs when the argument max is too large for kcalloc to handle.

Extend the guard to guard against values that are too large for
kcalloc

Reported-by: syzbot+94d20db923b9f51be0df@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=94d20db923b9f51be0df
Tested-by: syzbot+94d20db923b9f51be0df@syzkaller.appspotmail.com
Fixes: 73f37068d5 ("ptp: support ptp physical/virtual clocks conversion")
Signed-off-by: I Viswanath <viswanathiyyappan@gmail.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Link: https://patch.msgid.link/20250925155908.5034-1-viswanathiyyappan@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-10-15 12:00:17 +02:00
..
Kconfig ptp: add FemtoClock3 Wireless as ptp hardware clock 2024-01-29 13:00:23 +00:00
Makefile ptp: add FemtoClock3 Wireless as ptp hardware clock 2024-01-29 13:00:23 +00:00
ptp_chardev.c ptp: Properly handle compat ioctls 2025-02-08 09:58:06 +01:00
ptp_clock.c ptp: Use ratelimite for freerun error message 2025-08-20 18:30:38 +02:00
ptp_clockmatrix.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
ptp_clockmatrix.h ptp: ptp_clockmatrix: Add .getmaxphase ptp_clock_info callback 2023-06-20 09:02:33 +01:00
ptp_dfl_tod.c ptp: add ToD device driver for Intel FPGA cards 2023-03-29 21:25:48 -07:00
ptp_dte.c ptp: ptp_dte: Convert to platform remove callback returning void 2024-04-12 18:51:39 -07:00
ptp_fc3.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
ptp_fc3.h ptp: add FemtoClock3 Wireless as ptp hardware clock 2024-01-29 13:00:23 +00:00
ptp_idt82p33.c ptp: ptp_idt82p33: Convert comma to semicolon 2024-09-05 13:17:40 +02:00
ptp_idt82p33.h ptp: idt82p33: Add .getmaxphase ptp_clock_info callback 2023-06-20 09:02:33 +01:00
ptp_ines.c ptp: ptp_ines: Remove setting of RX software timestamp 2024-09-09 17:44:42 -07:00
ptp_kvm_arm.c treewide: Remove system_counterval_t.cs, which is never read 2024-02-07 17:05:21 +01:00
ptp_kvm_common.c treewide: Remove system_counterval_t.cs, which is never read 2024-02-07 17:05:21 +01:00
ptp_kvm_x86.c ptp: kvm: x86: Return EOPNOTSUPP instead of ENODEV from kvm_arch_ptp_init() 2024-12-19 18:13:13 +01:00
ptp_mock.c net: ptp: create a mock-up PTP Hardware Clock driver 2023-08-09 15:59:21 -07:00
ptp_ocp.c ptp: ocp: Limit signal/freq counts in summary output functions 2025-05-29 11:03:16 +02:00
ptp_pch.c ptp_phc: convert .adjfreq to .adjfine 2022-11-11 10:58:39 +00:00
ptp_private.h ptp: Add a upper bound on max_vclocks 2025-10-15 12:00:17 +02:00
ptp_qoriq.c ptp: ptp_qoriq: Convert to platform remove callback returning void 2024-04-12 18:51:39 -07:00
ptp_qoriq_debugfs.c ptp_qoriq: add little enadian support 2019-02-12 12:58:48 -05:00
ptp_sysfs.c ptp: Add a upper bound on max_vclocks 2025-10-15 12:00:17 +02:00
ptp_vclock.c ptp: prevent possible ABBA deadlock in ptp_clock_freerun() 2025-08-20 18:30:18 +02:00
ptp_vmw.c ptp/vmware: Use VMware hypercall API 2024-06-25 17:15:47 +02:00