syz-executor.4 calls setitimer() with new_value NULL pointer. Misfeature support will be removed
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5139 at net/ipv4/ipmr.c:440 ipmr_rules_exit+0x13a/0x1c0
Modules linked in:
CPU: 0 UID: 0 PID: 5139 Comm: syz-executor.2 Not tainted 6.13.0-rc3-next-20241220 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:ipmr_rules_exit+0x13a/0x1c0
Code: ff df 48 c1 ea 03 80 3c 02 00 75 7d 48 c7 83 00 08 00 00 00 00 00 00 5b 5d 41 5c 41 5d 41 5e e9 5c 80 a3 00 e8 47 df 6a fd 90 <0f> 0b 90 eb 93 e8 3c df 6a fd 0f b6 2d 1d 26 36 02 31 ff 89 ee e8
RSP: 0018:ffff888015c5f958 EFLAGS: 00010212
RAX: 0000000000018693 RBX: ffff88800bd22e00 RCX: ffffc900027e3000
RDX: 0000000000040000 RSI: ffffffff8406ea09 RDI: 0000000000000005
RBP: ffff88803fc84000 R08: 0000000000000000 R09: ffffed10017a45e9
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: ffff88800bd23600 R14: ffff88800bd22e00 R15: fffffbfff0c51178
FS:  00007f1a7ad02700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002003d000 CR3: 000000003f786000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 ipmr_net_exit_batch+0x53/0xa0
 ops_exit_list+0x12b/0x180
 setup_net+0x492/0x7a0
 copy_net_ns+0x2e3/0x700
 create_new_namespaces+0x3f6/0xaf0
 copy_namespaces+0x45c/0x580
 copy_process+0x26c0/0x70e0
 kernel_clone+0xeb/0x850
 __do_sys_clone+0xba/0x100
 do_syscall_64+0xbf/0x1d0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1a7d78cb19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1a7ad02188 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f1a7d89ff60 RCX: 00007f1a7d78cb19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000059100500
RBP: 00007f1a7d7e6f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff4a478cef R14: 00007f1a7ad02300 R15: 0000000000022000
 </TASK>
irq event stamp: 16437
hardirqs last  enabled at (16447): [<ffffffff81528b38>] __up_console_sem+0x78/0x80
hardirqs last disabled at (16458): [<ffffffff81528b1d>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (16348): [<ffffffff813a9e4c>] handle_softirqs+0x50c/0x770
softirqs last disabled at (16343): [<ffffffff813aa1e4>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
Bluetooth: hci3: unexpected cc 0x0c03 length: 249 > 1
Bluetooth: hci3: unexpected cc 0x1003 length: 249 > 9
Bluetooth: hci3: unexpected cc 0x1001 length: 249 > 9
Bluetooth: hci3: unexpected cc 0x0c23 length: 249 > 4
Bluetooth: hci3: unexpected cc 0x0c25 length: 249 > 3
Bluetooth: hci3: unexpected cc 0x0c38 length: 249 > 2
Bluetooth: hci3: command tx timeout
Bluetooth: hci3: command tx timeout