* [syzbot] [mm?] [cgroups?] kernel BUG in swap_cgroup_record (2)
@ 2026-01-09 8:57 syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2026-01-09 8:57 UTC (permalink / raw)
To: akpm, cgroups, hannes, linux-kernel, linux-mm, mhocko,
muchun.song, roman.gushchin, shakeel.butt, syzkaller-bugs
Hello,
syzbot found the following issue on:
HEAD commit: f8f97927abf7 Add linux-next specific files for 20260105
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=131ff69a580000
kernel config: https://syzkaller.appspot.com/x/.config?x=a0672dd8d69c3235
dashboard link: https://syzkaller.appspot.com/bug?extid=d97580a8cceb9b03c13e
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17065efc580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=176c9e9a580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/1837bbc8e23e/disk-f8f97927.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/07390717f7e4/vmlinux-f8f97927.xz
kernel image: https://storage.googleapis.com/syzbot-assets/8f4a72ec80dc/bzImage-f8f97927.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d97580a8cceb9b03c13e@syzkaller.appspotmail.com
------------[ cut here ]------------
kernel BUG at mm/swap_cgroup.c:78!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 6176 Comm: syz.0.30 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:swap_cgroup_record+0x19c/0x1c0 mm/swap_cgroup.c:78
Code: 02 e9 6d ff ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 35 ff ff ff 4c 89 f7 e8 cf 84 f6 ff e9 28 ff ff ff e8 e5 c1 8f ff 90 <0f> 0b e8 dd c1 8f ff 4c 89 f7 48 c7 c6 80 f6 98 8b e8 de d4 f6 fe
RSP: 0018:ffffc90003176720 EFLAGS: 00010093
RAX: ffffffff8231359b RBX: 0000000000001b88 RCX: ffff8880351f9e40
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200062ecd4 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffc900041b1000 R15: 0000000000000002
FS: 00007feeba18f6c0(0000) GS:ffff8881259c0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feeba18ef98 CR3: 0000000077742000 CR4: 00000000003526f0
Call Trace:
<TASK>
memcg1_swapout+0x2fa/0x830 mm/memcontrol-v1.c:623
__remove_mapping+0xac5/0xe30 mm/vmscan.c:773
shrink_folio_list+0x2786/0x4f40 mm/vmscan.c:1528
reclaim_folio_list+0xeb/0x4e0 mm/vmscan.c:2208
reclaim_pages+0x454/0x520 mm/vmscan.c:2245
madvise_cold_or_pageout_pte_range+0x19a0/0x1ce0 mm/madvise.c:563
walk_pmd_range mm/pagewalk.c:130 [inline]
walk_pud_range mm/pagewalk.c:224 [inline]
walk_p4d_range mm/pagewalk.c:262 [inline]
walk_pgd_range+0x1037/0x1d30 mm/pagewalk.c:303
__walk_page_range+0x14c/0x710 mm/pagewalk.c:410
walk_page_range_vma_unsafe+0x34c/0x400 mm/pagewalk.c:714
madvise_pageout_page_range mm/madvise.c:622 [inline]
madvise_pageout mm/madvise.c:647 [inline]
madvise_vma_behavior+0x3132/0x4170 mm/madvise.c:1366
madvise_walk_vmas+0x575/0xaf0 mm/madvise.c:1721
madvise_do_behavior+0x38e/0x550 mm/madvise.c:1937
do_madvise+0x1bc/0x270 mm/madvise.c:2030
__do_sys_madvise mm/madvise.c:2039 [inline]
__se_sys_madvise mm/madvise.c:2037 [inline]
__x64_sys_madvise+0xa7/0xc0 mm/madvise.c:2037
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feeb938f749
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007feeba18f038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007feeb95e6090 RCX: 00007feeb938f749
RDX: 0000000000000015 RSI: 0000000000800000 RDI: 0000200000000000
RBP: 00007feeb9413f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007feeb95e6128 R14: 00007feeb95e6090 R15: 00007ffd48399048
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:swap_cgroup_record+0x19c/0x1c0 mm/swap_cgroup.c:78
Code: 02 e9 6d ff ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 35 ff ff ff 4c 89 f7 e8 cf 84 f6 ff e9 28 ff ff ff e8 e5 c1 8f ff 90 <0f> 0b e8 dd c1 8f ff 4c 89 f7 48 c7 c6 80 f6 98 8b e8 de d4 f6 fe
RSP: 0018:ffffc90003176720 EFLAGS: 00010093
RAX: ffffffff8231359b RBX: 0000000000001b88 RCX: ffff8880351f9e40
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200062ecd4 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffc900041b1000 R15: 0000000000000002
FS: 00007feeba18f6c0(0000) GS:ffff8881259c0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feeba18ef98 CR3: 0000000077742000 CR4: 00000000003526f0
---
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@googlegroups.com.
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
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] [mm?] [cgroups?] kernel BUG in swap_cgroup_record (2)
[not found] <20260109162319.596850-1-kartikey406@gmail.com>
@ 2026-01-09 17:08 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2026-01-09 17:08 UTC (permalink / raw)
To: kartikey406, linux-kernel, syzkaller-bugs
Hello,
syzbot has tested the proposed patch but the reproducer is still triggering an issue:
KASAN: vmalloc-out-of-bounds Read in swap_cgroup_lookup
==================================================================
BUG: KASAN: vmalloc-out-of-bounds in instrument_atomic_read include/linux/instrumented.h:68 [inline]
BUG: KASAN: vmalloc-out-of-bounds in atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
BUG: KASAN: vmalloc-out-of-bounds in swap_cgroup_lookup+0x89/0xd0 mm/swap_cgroup.c:67
Read of size 4 at addr ffffc900034e0800 by task syz.0.17/6463
CPU: 0 UID: 0 PID: 6463 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
<TASK>
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0xca/0x240 mm/kasan/report.c:482
kasan_report+0x118/0x150 mm/kasan/report.c:595
check_region_inline mm/kasan/generic.c:-1 [inline]
kasan_check_range+0x2b0/0x2c0 mm/kasan/generic.c:200
instrument_atomic_read include/linux/instrumented.h:68 [inline]
atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
swap_cgroup_lookup+0x89/0xd0 mm/swap_cgroup.c:67
memcg1_swapout+0x235/0x8c0 mm/memcontrol-v1.c:634
__remove_mapping+0xac5/0xe30 mm/vmscan.c:764
shrink_folio_list+0x28a8/0x5200 mm/vmscan.c:1523
reclaim_folio_list+0xeb/0x4e0 mm/vmscan.c:2203
reclaim_pages+0x454/0x520 mm/vmscan.c:2240
madvise_cold_or_pageout_pte_range+0x19a0/0x1ce0 mm/madvise.c:563
walk_pmd_range mm/pagewalk.c:130 [inline]
walk_pud_range mm/pagewalk.c:224 [inline]
walk_p4d_range mm/pagewalk.c:262 [inline]
walk_pgd_range+0x1037/0x1d30 mm/pagewalk.c:303
__walk_page_range+0x14c/0x710 mm/pagewalk.c:410
walk_page_range_vma_unsafe+0x34c/0x400 mm/pagewalk.c:714
madvise_pageout_page_range mm/madvise.c:622 [inline]
madvise_pageout mm/madvise.c:647 [inline]
madvise_vma_behavior+0x3132/0x4170 mm/madvise.c:1366
madvise_walk_vmas+0x575/0xaf0 mm/madvise.c:1721
madvise_do_behavior+0x38e/0x550 mm/madvise.c:1937
do_madvise+0x1bc/0x270 mm/madvise.c:2030
__do_sys_madvise mm/madvise.c:2039 [inline]
__se_sys_madvise mm/madvise.c:2037 [inline]
__x64_sys_madvise+0xa7/0xc0 mm/madvise.c:2037
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6b0fb8f749
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6b10aca038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f6b0fde6090 RCX: 00007f6b0fb8f749
RDX: 0000000000000015 RSI: 0000000000800000 RDI: 0000200000000000
RBP: 00007f6b0fc13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6b0fde6128 R14: 00007f6b0fde6090 R15: 00007ffcdb080178
</TASK>
The buggy address belongs to a vmalloc virtual mapping
Memory state around the buggy address:
ffffc900034e0700: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
ffffc900034e0780: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
>ffffc900034e0800: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
^
ffffc900034e0880: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
ffffc900034e0900: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
==================================================================
Tested on:
commit: f417b7ff Add linux-next specific files for 20260109
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=138f919a580000
kernel config: https://syzkaller.appspot.com/x/.config?x=9abcd50d16f3c8b5
dashboard link: https://syzkaller.appspot.com/bug?extid=d97580a8cceb9b03c13e
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=15dab19a580000
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] [mm?] [cgroups?] kernel BUG in swap_cgroup_record (2)
[not found] <20260110021726.601463-1-kartikey406@gmail.com>
@ 2026-01-10 3:10 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2026-01-10 3:10 UTC (permalink / raw)
To: kartikey406, linux-kernel, syzkaller-bugs
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
SYZFAIL: failed to recv rpc
SYZFAIL: failed to recv rpc
fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor)
Warning: Permanently added '10.128.0.242' (ED25519) to the list of known hosts.
2026/01/10 03:09:35 parsed 1 programs
[ 88.711272][ T5822] cgroup: Unknown subsys name 'net'
[ 88.843176][ T5822] cgroup: Unknown subsys name 'cpuset'
[ 88.852142][ T5822] cgroup: Unknown subsys name 'rlimit'
Setting up swapspace version 1, size = 127995904 bytes
[ 90.461442][ T5822] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 91.871113][ T24] cfg80211: failed to load regulatory.db
[ 93.600337][ T5836] soft_limit_in_bytes is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality.
[ 95.440430][ T5868] chnl_net:caif_netlink_parms(): no params data found
[ 95.527893][ T5868] bridge0: port 1(bridge_slave_0) entered blocking state
[ 95.535931][ T5868] bridge0: port 1(bridge_slave_0) entered disabled state
[ 95.543456][ T5868] bridge_slave_0: entered allmulticast mode
[ 95.550859][ T5868] bridge_slave_0: entered promiscuous mode
[ 95.563396][ T5868] bridge0: port 2(bridge_slave_1) entered blocking state
[ 95.570815][ T5868] bridge0: port 2(bridge_slave_1) entered disabled state
[ 95.578026][ T5868] bridge_slave_1: entered allmulticast mode
[ 95.586755][ T5868] bridge_slave_1: entered promiscuous mode
[ 95.626344][ T5868] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 95.638893][ T5868] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 95.673144][ T5868] team0: Port device team_slave_0 added
[ 95.681936][ T5868] team0: Port device team_slave_1 added
[ 95.708970][ T5868] batman_adv: batadv0: Adding interface: batadv_slave_0
[ 95.716159][ T5868] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem.
[ 95.742335][ T5868] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[ 95.755810][ T5868] batman_adv: batadv0: Adding interface: batadv_slave_1
[ 95.762876][ T5868] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem.
[ 95.791065][ T5868] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[ 95.834850][ T5868] hsr_slave_0: entered promiscuous mode
[ 95.841687][ T5868] hsr_slave_1: entered promiscuous mode
[ 96.001076][ T5868] netdevsim netdevsim0 netdevsim0: renamed from eth0
[ 96.014149][ T5868] netdevsim netdevsim0 netdevsim1: renamed from eth1
[ 96.025138][ T5868] netdevsim netdevsim0 netdevsim2: renamed from eth2
[ 96.035535][ T5868] netdevsim netdevsim0 netdevsim3: renamed from eth3
[ 96.066548][ T5868] bridge0: port 2(bridge_slave_1) entered blocking state
[ 96.073872][ T5868] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 96.128341][ T5868] 8021q: adding VLAN 0 to HW filter on device bond0
[ 96.146621][ T59] bridge0: port 2(bridge_slave_1) entered disabled state
[ 96.167349][ T5868] 8021q: adding VLAN 0 to HW filter on device team0
[ 96.181939][ T270] bridge0: port 1(bridge_slave_0) entered blocking state
[ 96.189056][ T270] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 96.203674][ T270] bridge0: port 2(bridge_slave_1) entered blocking state
[ 96.210860][ T270] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 96.381576][ T5868] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 96.428743][ T5868] veth0_vlan: entered promiscuous mode
[ 96.439922][ T5868] veth1_vlan: entered promiscuous mode
[ 96.471394][ T5868] veth0_macvtap: entered promiscuous mode
[ 96.481411][ T5868] veth1_macvtap: entered promiscuous mode
[ 96.502984][ T5868] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 96.524832][ T5868] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 96.540909][ T59] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[ 96.551008][ T59] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[ 96.560641][ T59] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[ 96.571492][ T59] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[ 96.743657][ T12] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[ 96.832582][ T12] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[ 96.896908][ T12] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[ 97.033956][ T12] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[ 97.365778][ T59] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 97.381230][ T59] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 97.411764][ T1139] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 97.421103][ T1139] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 97.695376][ T5912] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[ 97.703571][ T5912] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[ 97.713201][ T5912] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[ 97.722480][ T5912] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[ 97.730298][ T5912] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
2026/01/10 03:09:48 executed programs: 0
[ 98.868274][ T5912] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[ 98.877916][ T5912] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[ 98.887261][ T5912] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[ 98.895276][ T5912] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[ 98.903259][ T5912] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[ 99.060866][ T5932] chnl_net:caif_netlink_parms(): no params data found
[ 99.138845][ T5932] bridge0: port 1(bridge_slave_0) entered blocking state
[ 99.147157][ T5932] bridge0: port 1(bridge_slave_0) entered disabled state
[ 99.154595][ T5932] bridge_slave_0: entered allmulticast mode
[ 99.161781][ T5932] bridge_slave_0: entered promiscuous mode
[ 99.169948][ T5932] bridge0: port 2(bridge_slave_1) entered blocking state
[ 99.177093][ T5932] bridge0: port 2(bridge_slave_1) entered disabled state
[ 99.185026][ T5932] bridge_slave_1: entered allmulticast mode
[ 99.192340][ T5932] bridge_slave_1: entered promiscuous mode
[ 99.225243][ T5932] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 99.237126][ T5932] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 99.270116][ T5932] team0: Port device team_slave_0 added
[ 99.278386][ T5932] team0: Port device team_slave_1 added
[ 99.306257][ T5932] batman_adv: batadv0: Adding interface: batadv_slave_0
[ 99.314231][ T5932] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem.
[ 99.340169][ T5932] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[ 99.352165][ T5932] batman_adv: batadv0: Adding interface: batadv_slave_1
[ 99.359289][ T5932] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem.
[ 99.385220][ T5932] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[ 99.430574][ T5932] hsr_slave_0: entered promiscuous mode
[ 99.439595][ T5932] hsr_slave_1: entered promiscuous mode
[ 99.445741][ T5932] debugfs: 'hsr0' already exists in 'hsr'
[ 99.452235][ T5932] Cannot create hsr debugfs directory
[ 99.622568][ T12] bridge_slave_1: left allmulticast mode
[ 99.629935][ T12] bridge_slave_1: left promiscuous mode
[ 99.636169][ T12] bridge0: port 2(bridge_slave_1) entered disabled state
[ 99.651867][ T12] bridge_slave_0: left allmulticast mode
[ 99.657517][ T12] bridge_slave_0: left promiscuous mode
[ 99.664260][ T12] bridge0: port 1(bridge_slave_0) entered disabled state
[ 99.883035][ T12] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface
[ 99.894158][ T12] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
[ 99.904243][ T12] bond0 (unregistering): Released all slaves
[ 100.011269][ T12] hsr_slave_0: left promiscuous mode
[ 100.019048][ T12] hsr_slave_1: left promiscuous mode
[ 100.028507][ T12] batman_adv: batadv0: Interface deactivated: batadv_slave_0
[ 100.037408][ T12] batman_adv: batadv0: Removing interface: batadv_slave_0
[ 100.047364][ T12] batman_adv: batadv0: Interface deactivated: batadv_slave_1
[ 100.055101][ T12] batman_adv: batadv0: Removing interface: batadv_slave_1
[ 100.077283][ T12] veth1_macvtap: left promiscuous mode
[ 100.087766][ T12] veth0_macvtap: left promiscuous mode
[ 100.094117][ T12] veth1_vlan: left promiscuous mode
[ 100.099830][ T12] veth0_vlan: left promiscuous mode
[ 100.587324][ T12] team0 (unregistering): Port device team_slave_1 removed
[ 100.613018][ T12] team0 (unregistering): Port device team_slave_0 removed
[ 100.990032][ T5141] Bluetooth: hci0: command tx timeout
[ 101.261953][ T5932] netdevsim netdevsim0 netdevsim0: renamed from eth0
[ 101.283832][ T5932] netdevsim netdevsim0 netdevsim1: renamed from eth1
[ 101.296306][ T5932] netdevsim netdevsim0 netdevsim2: renamed from eth2
[ 101.317158][ T5932] netdevsim netdevsim0 netdevsim3: renamed from eth3
[ 101.896074][ T5932] 8021q: adding VLAN 0 to HW filter on device bond0
[ 101.961367][ T5932] 8021q: adding VLAN 0 to HW filter on device team0
[ 102.024829][ T1139] bridge0: port 1(bridge_slave_0) entered blocking state
[ 102.032094][ T1139] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 102.136814][ T1139] bridge0: port 2(bridge_slave_1) entered blocking state
[ 102.144085][ T1139] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 102.627847][ T5932] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 102.726619][ T5932] veth0_vlan: entered promiscuous mode
[ 102.750192][ T5932] veth1_vlan: entered promiscuous mode
[ 102.799601][ T5932] veth0_macvtap: entered promiscuous mode
[ 102.811637][ T5932] veth1_macvtap: entered promiscuous mode
[ 102.840912][ T5932] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 102.870006][ T5932] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 102.902211][ T12] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[ 102.922171][ T12] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[ 102.935105][ T12] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[ 102.958747][ T12] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[ 103.045786][ T12] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 103.059702][ T12] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 103.069711][ T5141] Bluetooth: hci0: command tx timeout
[ 103.115541][ T270] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 103.125601][ T270] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
SYZFAIL: failed to recv rpc
fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor)
[ 103.767902][ T1139] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
syzkaller build log:
go env (err=<nil>)
AR='ar'
CC='gcc'
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_ENABLED='1'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
CXX='g++'
GCCGO='gccgo'
GO111MODULE='auto'
GOAMD64='v1'
GOARCH='amd64'
GOAUTH='netrc'
GOBIN=''
GOCACHE='/syzkaller/.cache/go-build'
GOCACHEPROG=''
GODEBUG=''
GOENV='/syzkaller/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFIPS140='off'
GOFLAGS=''
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build2111104491=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod'
GOMODCACHE='/syzkaller/jobs-2/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs-2/linux/gopath'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTELEMETRY='local'
GOTELEMETRYDIR='/syzkaller/.config/go/telemetry'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.24.4'
GOWORK=''
PKG_CONFIG='pkg-config'
git status (err=<nil>)
HEAD detached at d6526ea3e
nothing to commit, working tree clean
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
go list -f '{{.Stale}}' -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115" ./sys/syz-sysgen
make .descriptions
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115" -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
mkdir -p ./bin/linux_amd64
g++ -o ./bin/linux_amd64/syz-executor executor/executor.cc \
-m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -std=c++17 -I. -Iexecutor/_include -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"d6526ea3e6ad9081c902859bbb80f9f840377cb4\"
/usr/bin/ld: /tmp/ccTDVhZE.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x104): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
./tools/check-syzos.sh 2>/dev/null
Tested on:
commit: f417b7ff Add linux-next specific files for 20260109
git tree: linux-next
kernel config: https://syzkaller.appspot.com/x/.config?x=9abcd50d16f3c8b5
dashboard link: https://syzkaller.appspot.com/bug?extid=d97580a8cceb9b03c13e
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=1786619a580000
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] [mm?] [cgroups?] kernel BUG in swap_cgroup_record (2)
[not found] <20260110040418.602215-1-kartikey406@gmail.com>
@ 2026-01-10 6:40 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2026-01-10 6:40 UTC (permalink / raw)
To: kartikey406, linux-kernel, syzkaller-bugs
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger any issue:
Reported-by: syzbot+d97580a8cceb9b03c13e@syzkaller.appspotmail.com
Tested-by: syzbot+d97580a8cceb9b03c13e@syzkaller.appspotmail.com
Tested on:
commit: f417b7ff Add linux-next specific files for 20260109
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=179249fc580000
kernel config: https://syzkaller.appspot.com/x/.config?x=9abcd50d16f3c8b5
dashboard link: https://syzkaller.appspot.com/bug?extid=d97580a8cceb9b03c13e
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=107a3f92580000
Note: testing is done by a robot and is best-effort only.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] [mm?] [cgroups?] kernel BUG in swap_cgroup_record (2)
[not found] <20260112163611.11083-2-ryncsn@gmail.com>
@ 2026-01-12 17:23 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2026-01-12 17:23 UTC (permalink / raw)
To: kasong, linux-kernel, ryncsn, syzkaller-bugs
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
SYZFAIL: failed to recv rpc
SYZFAIL: failed to recv rpc
Warning: Permanently added '10.128.1.115' (ED25519) to the list of known hosts.
2026/01/12 17:22:39 parsed 1 programs
[ 82.355124][ T5825] cgroup: Unknown subsys name 'net'
[ 82.462751][ T5825] cgroup: Unknown subsys name 'cpuset'
[ 82.472202][ T5825] cgroup: Unknown subsys name 'rlimit'
Setting up swapspace version 1, size = 127995904 bytes
[ 83.906410][ T5825] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 86.975545][ T5843] soft_limit_in_bytes is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality.
[ 87.202360][ T981] cfg80211: failed to load regulatory.db
[ 87.362862][ T5143] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[ 87.373407][ T5143] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[ 87.381143][ T5143] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[ 87.390171][ T5143] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[ 87.439616][ T5143] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[ 88.365680][ T67] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 88.399392][ T67] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 88.589212][ T67] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 88.597071][ T67] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 89.835852][ T5889] chnl_net:caif_netlink_parms(): no params data found
[ 90.228347][ T5889] bridge0: port 1(bridge_slave_0) entered blocking state
[ 90.239581][ T5889] bridge0: port 1(bridge_slave_0) entered disabled state
[ 90.246917][ T5889] bridge_slave_0: entered allmulticast mode
[ 90.256371][ T5889] bridge_slave_0: entered promiscuous mode
[ 90.265733][ T5889] bridge0: port 2(bridge_slave_1) entered blocking state
[ 90.273158][ T5889] bridge0: port 2(bridge_slave_1) entered disabled state
[ 90.281856][ T5889] bridge_slave_1: entered allmulticast mode
[ 90.290137][ T5889] bridge_slave_1: entered promiscuous mode
[ 90.413855][ T5889] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 90.425935][ T5889] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 90.501838][ T5889] team0: Port device team_slave_0 added
[ 90.510759][ T5889] team0: Port device team_slave_1 added
[ 90.555934][ T5889] batman_adv: batadv0: Adding interface: batadv_slave_0
[ 90.564110][ T5889] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem.
[ 90.590902][ T5889] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[ 90.616343][ T5889] batman_adv: batadv0: Adding interface: batadv_slave_1
[ 90.623556][ T5889] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem.
[ 90.649772][ T5889] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[ 90.705764][ T5889] hsr_slave_0: entered promiscuous mode
[ 90.713531][ T5889] hsr_slave_1: entered promiscuous mode
[ 90.916005][ T5889] netdevsim netdevsim3 netdevsim0: renamed from eth0
[ 90.929511][ T5889] netdevsim netdevsim3 netdevsim1: renamed from eth1
[ 90.941154][ T5889] netdevsim netdevsim3 netdevsim2: renamed from eth2
[ 90.952423][ T5889] netdevsim netdevsim3 netdevsim3: renamed from eth3
[ 91.033645][ T5889] 8021q: adding VLAN 0 to HW filter on device bond0
[ 91.060124][ T5889] 8021q: adding VLAN 0 to HW filter on device team0
[ 91.074550][ T3448] bridge0: port 1(bridge_slave_0) entered blocking state
[ 91.081980][ T3448] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 91.101431][ T146] bridge0: port 2(bridge_slave_1) entered blocking state
[ 91.108582][ T146] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 91.283990][ T5889] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 91.326572][ T5889] veth0_vlan: entered promiscuous mode
[ 91.339642][ T5889] veth1_vlan: entered promiscuous mode
[ 91.372247][ T5889] veth0_macvtap: entered promiscuous mode
[ 91.382836][ T5889] veth1_macvtap: entered promiscuous mode
[ 91.403819][ T5889] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 91.419341][ T5889] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 91.435991][ T146] netdevsim netdevsim3 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[ 91.447488][ T146] netdevsim netdevsim3 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[ 91.458151][ T146] netdevsim netdevsim3 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[ 91.468162][ T146] netdevsim netdevsim3 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
2026/01/12 17:22:51 executed programs: 0
[ 91.617871][ T51] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[ 91.627315][ T51] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[ 91.636293][ T51] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[ 91.650415][ T51] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[ 91.658087][ T51] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[ 91.867766][ T5933] chnl_net:caif_netlink_parms(): no params data found
[ 91.947831][ T5933] bridge0: port 1(bridge_slave_0) entered blocking state
[ 91.955090][ T5933] bridge0: port 1(bridge_slave_0) entered disabled state
[ 91.962571][ T5933] bridge_slave_0: entered allmulticast mode
[ 91.970169][ T5933] bridge_slave_0: entered promiscuous mode
[ 91.981276][ T5933] bridge0: port 2(bridge_slave_1) entered blocking state
[ 91.988502][ T5933] bridge0: port 2(bridge_slave_1) entered disabled state
[ 91.996341][ T5933] bridge_slave_1: entered allmulticast mode
[ 92.004890][ T5933] bridge_slave_1: entered promiscuous mode
[ 92.040822][ T5933] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 92.052807][ T5933] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 92.087150][ T5933] team0: Port device team_slave_0 added
[ 92.096317][ T5933] team0: Port device team_slave_1 added
[ 92.125800][ T5933] batman_adv: batadv0: Adding interface: batadv_slave_0
[ 92.132843][ T5933] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem.
[ 92.160391][ T5933] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[ 92.175276][ T5933] batman_adv: batadv0: Adding interface: batadv_slave_1
[ 92.182369][ T5933] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem.
[ 92.208618][ T5933] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[ 92.262268][ T5933] hsr_slave_0: entered promiscuous mode
[ 92.268793][ T5933] hsr_slave_1: entered promiscuous mode
[ 92.275370][ T5933] debugfs: 'hsr0' already exists in 'hsr'
[ 92.281260][ T5933] Cannot create hsr debugfs directory
[ 92.454270][ T5933] netdevsim netdevsim0 netdevsim0: renamed from eth0
[ 92.464921][ T5933] netdevsim netdevsim0 netdevsim1: renamed from eth1
[ 92.476743][ T5933] netdevsim netdevsim0 netdevsim2: renamed from eth2
[ 92.487822][ T5933] netdevsim netdevsim0 netdevsim3: renamed from eth3
[ 92.521997][ T5933] bridge0: port 2(bridge_slave_1) entered blocking state
[ 92.529373][ T5933] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 92.537501][ T5933] bridge0: port 1(bridge_slave_0) entered blocking state
[ 92.545011][ T5933] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 92.611103][ T5933] 8021q: adding VLAN 0 to HW filter on device bond0
[ 92.628121][ T12] bridge0: port 1(bridge_slave_0) entered disabled state
[ 92.638874][ T12] bridge0: port 2(bridge_slave_1) entered disabled state
[ 92.655069][ T5933] 8021q: adding VLAN 0 to HW filter on device team0
[ 92.670870][ T3448] bridge0: port 1(bridge_slave_0) entered blocking state
[ 92.678028][ T3448] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 92.692502][ T12] bridge0: port 2(bridge_slave_1) entered blocking state
[ 92.699727][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 92.881583][ T5933] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 92.922279][ T5933] veth0_vlan: entered promiscuous mode
[ 92.936672][ T5933] veth1_vlan: entered promiscuous mode
[ 92.971137][ T5933] veth0_macvtap: entered promiscuous mode
[ 92.981189][ T5933] veth1_macvtap: entered promiscuous mode
[ 93.001283][ T5933] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 93.017932][ T5933] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 93.036848][ T3013] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[ 93.047100][ T3013] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[ 93.057457][ T3013] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[ 93.066673][ T3013] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[ 93.136251][ T67] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 93.144412][ T67] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 93.184930][ T12] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 93.193952][ T12] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
SYZFAIL: failed to recv rpc
[ 93.751896][ T12] netdevsim netdevsim3 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
syzkaller build log:
go env (err=<nil>)
AR='ar'
CC='gcc'
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_ENABLED='1'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
CXX='g++'
GCCGO='gccgo'
GO111MODULE='auto'
GOAMD64='v1'
GOARCH='amd64'
GOAUTH='netrc'
GOBIN=''
GOCACHE='/syzkaller/.cache/go-build'
GOCACHEPROG=''
GODEBUG=''
GOENV='/syzkaller/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFIPS140='off'
GOFLAGS=''
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build2122481591=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod'
GOMODCACHE='/syzkaller/jobs-2/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs-2/linux/gopath'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTELEMETRY='local'
GOTELEMETRYDIR='/syzkaller/.config/go/telemetry'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.24.4'
GOWORK=''
PKG_CONFIG='pkg-config'
git status (err=<nil>)
HEAD detached at d6526ea3e
nothing to commit, working tree clean
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
go list -f '{{.Stale}}' -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115" ./sys/syz-sysgen
make .descriptions
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115" -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
mkdir -p ./bin/linux_amd64
g++ -o ./bin/linux_amd64/syz-executor executor/executor.cc \
-m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -std=c++17 -I. -Iexecutor/_include -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"d6526ea3e6ad9081c902859bbb80f9f840377cb4\"
/usr/bin/ld: /tmp/ccWbF51D.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x104): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
./tools/check-syzos.sh 2>/dev/null
Tested on:
commit: f417b7ff Add linux-next specific files for 20260109
git tree: linux-next
kernel config: https://syzkaller.appspot.com/x/.config?x=63a1fc1b4011ac76
dashboard link: https://syzkaller.appspot.com/bug?extid=d97580a8cceb9b03c13e
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=13ab299a580000
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] [mm?] [cgroups?] kernel BUG in swap_cgroup_record (2)
[not found] <20260112173928.74176-1-ryncsn@gmail.com>
@ 2026-01-12 18:28 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2026-01-12 18:28 UTC (permalink / raw)
To: kasong, linux-kernel, ryncsn, syzkaller-bugs
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger any issue:
Reported-by: syzbot+d97580a8cceb9b03c13e@syzkaller.appspotmail.com
Tested-by: syzbot+d97580a8cceb9b03c13e@syzkaller.appspotmail.com
Tested on:
commit: f417b7ff Add linux-next specific files for 20260109
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=15f7b922580000
kernel config: https://syzkaller.appspot.com/x/.config?x=63a1fc1b4011ac76
dashboard link: https://syzkaller.appspot.com/bug?extid=d97580a8cceb9b03c13e
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
patch: https://syzkaller.appspot.com/x/patch.diff?x=179939fc580000
Note: testing is done by a robot and is best-effort only.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2026-01-12 18:28 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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[not found] <20260112163611.11083-2-ryncsn@gmail.com>
2026-01-12 17:23 ` [syzbot] [mm?] [cgroups?] kernel BUG in swap_cgroup_record (2) syzbot
[not found] <20260112173928.74176-1-ryncsn@gmail.com>
2026-01-12 18:28 ` syzbot
[not found] <20260110040418.602215-1-kartikey406@gmail.com>
2026-01-10 6:40 ` syzbot
[not found] <20260110021726.601463-1-kartikey406@gmail.com>
2026-01-10 3:10 ` syzbot
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2026-01-09 17:08 ` syzbot
2026-01-09 8:57 syzbot
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