ci2 starts bisection 2025-06-03 21:27:58.140021473 +0000 UTC m=+76847.908251052
bisecting fixing commit since 1ac09f5c057146455dc10fccd52a8f5f34039fb0
building syzkaller on ef44b750e8fab8d6d5cb84920680581b13e0d470
ensuring issue is reproducible on original commit 1ac09f5c057146455dc10fccd52a8f5f34039fb0

testing commit 1ac09f5c057146455dc10fccd52a8f5f34039fb0 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 205de5da5624f9a01783845c9a71aefa62c2bde9cec3676354a59471fd981a97
run #0: crashed: lost connection to test machine
run #1: crashed: BUG: soft lockup in sock_setsockopt
run #2: crashed: BUG: soft lockup in sock_setsockopt
run #3: crashed: BUG: soft lockup in sock_setsockopt
run #4: crashed: BUG: soft lockup in sock_close
run #5: crashed: BUG: soft lockup in sock_setsockopt
run #6: crashed: BUG: soft lockup in sock_setsockopt
run #7: crashed: BUG: soft lockup in sock_setsockopt
run #8: crashed: BUG: soft lockup in sock_setsockopt
run #9: crashed: BUG: soft lockup in x64_sys_call
run #10: crashed: BUG: soft lockup in sock_setsockopt
run #11: crashed: BUG: soft lockup in x64_sys_call
run #12: crashed: BUG: soft lockup in sock_setsockopt
run #13: crashed: BUG: soft lockup in x64_sys_call
run #14: crashed: BUG: soft lockup in sock_setsockopt
run #15: crashed: BUG: soft lockup in sock_setsockopt
run #16: crashed: BUG: soft lockup in sock_setsockopt
run #17: crashed: BUG: soft lockup in sock_setsockopt
run #18: crashed: BUG: soft lockup in sock_setsockopt
run #19: crashed: BUG: soft lockup in sock_setsockopt
representative crash: BUG: soft lockup in sock_setsockopt, types: [HANG]
check whether we can drop unnecessary instrumentation
disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK], they are not needed
testing commit 1ac09f5c057146455dc10fccd52a8f5f34039fb0 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 2e772b3f88c0010aac3fbe50ab5428ed1d35d96040b1b1ea90f0904b6209d96e
run #0: crashed: BUG: soft lockup in sock_setsockopt
run #1: crashed: BUG: soft lockup in x64_sys_call
run #2: crashed: BUG: soft lockup in x64_sys_call
run #3: crashed: BUG: soft lockup in sock_setsockopt
run #4: crashed: BUG: soft lockup in x64_sys_call
run #5: crashed: BUG: soft lockup in sock_setsockopt
run #6: crashed: BUG: soft lockup in sock_setsockopt
run #7: crashed: BUG: soft lockup in sock_setsockopt
run #8: crashed: BUG: soft lockup in sock_setsockopt
run #9: crashed: BUG: soft lockup in sock_setsockopt
representative crash: BUG: soft lockup in sock_setsockopt, types: [HANG]
the bug reproduces without the instrumentation
disabling configs for [ATOMIC_SLEEP LEAK UBSAN BUG KASAN LOCKDEP], they are not needed
kconfig minimization: base=5186 full=6548 leaves diff=266
split chunks (needed=false): <266>
split chunk #0 of len 266 into 5 parts
testing without sub-chunk 1/5
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit 1ac09f5c057146455dc10fccd52a8f5f34039fb0 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 749b6a1f9e798aee5a2a4b5fcb02f7026cdad2c0f01ff45fafcbc9f75ccc52dc
run #0: crashed: BUG: soft lockup in sock_setsockopt
run #1: crashed: BUG: soft lockup in sock_setsockopt
run #2: crashed: BUG: soft lockup in sock_setsockopt
run #3: crashed: BUG: soft lockup in sock_setsockopt
run #4: crashed: BUG: soft lockup in x64_sys_call
run #5: crashed: BUG: soft lockup in sock_setsockopt
run #6: crashed: BUG: soft lockup in sock_setsockopt
run #7: crashed: BUG: soft lockup in sock_setsockopt
run #8: crashed: BUG: soft lockup in sock_setsockopt
run #9: crashed: BUG: soft lockup in sock_setsockopt
representative crash: BUG: soft lockup in sock_setsockopt, types: [HANG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN BUG], they are not needed
testing commit 1ac09f5c057146455dc10fccd52a8f5f34039fb0 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 5924752be340be959c0b2787673fca85f76a44d4de770e5b8404ac0097b4fb6a
run #0: crashed: BUG: soft lockup in sock_setsockopt
run #1: crashed: BUG: soft lockup in sock_setsockopt
run #2: crashed: BUG: soft lockup in x64_sys_call
run #3: crashed: BUG: soft lockup in sock_setsockopt
run #4: crashed: BUG: soft lockup in x64_sys_call
run #5: crashed: BUG: soft lockup in sock_setsockopt
run #6: crashed: BUG: soft lockup in x64_sys_call
run #7: crashed: BUG: soft lockup in sock_setsockopt
run #8: crashed: BUG: soft lockup in sock_setsockopt
run #9: crashed: BUG: soft lockup in sock_setsockopt
representative crash: BUG: soft lockup in sock_setsockopt, types: [HANG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit 1ac09f5c057146455dc10fccd52a8f5f34039fb0 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: fd9764c402dc4aa7e170f67bc49fc71f8b5eb89dac27dad0f9a4a220043b4f4c
run #0: crashed: BUG: soft lockup in sock_close
run #1: crashed: BUG: soft lockup in sock_setsockopt
run #2: crashed: BUG: soft lockup in x64_sys_call
run #3: crashed: BUG: soft lockup in sock_setsockopt
run #4: crashed: BUG: soft lockup in sock_setsockopt
run #5: crashed: BUG: soft lockup in sock_setsockopt
run #6: crashed: BUG: soft lockup in x64_sys_call
run #7: crashed: BUG: soft lockup in sock_setsockopt
run #8: crashed: BUG: soft lockup in sock_setsockopt
run #9: crashed: BUG: soft lockup in sock_setsockopt
representative crash: BUG: soft lockup in sock_close, types: [HANG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP LEAK UBSAN], they are not needed
testing commit 1ac09f5c057146455dc10fccd52a8f5f34039fb0 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: b30729bfcf30e72919f9e96d47f69ac45cdd61c5429b3aae39f8da3e7fd3319b
run #0: crashed: BUG: soft lockup in sock_setsockopt
run #1: crashed: BUG: soft lockup in x64_sys_call
run #2: crashed: BUG: soft lockup in sock_setsockopt
run #3: crashed: BUG: soft lockup in sock_setsockopt
run #4: crashed: BUG: soft lockup in sock_setsockopt
run #5: crashed: BUG: soft lockup in sock_setsockopt
run #6: crashed: BUG: soft lockup in sock_setsockopt
run #7: crashed: BUG: soft lockup in x64_sys_call
run #8: crashed: BUG: soft lockup in x64_sys_call
run #9: crashed: BUG: soft lockup in x64_sys_call
representative crash: BUG: soft lockup in sock_setsockopt, types: [HANG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 1ac09f5c057146455dc10fccd52a8f5f34039fb0 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
failed building 1ac09f5c057146455dc10fccd52a8f5f34039fb0: ld.lld: error: undefined symbol: wext_proc_init
ld.lld: error: undefined symbol: wext_proc_exit
ld.lld: error: undefined symbol: wext_handle_ioctl
ld.lld: error: undefined symbol: compat_wext_handle_ioctl
minimized to 50 configs; suspects: [HID_ZEROPLUS USB_NET_GL620A USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_RNDIS_HOST USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD USB_OHCI_HCD_PCI USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_PRINTER USB_SERIAL_GENERIC USB_SERIAL_PL2303 USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_TRANCEVIBRATOR USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_WDM V4L2_ASYNC V4L2_FWNODE VIDEO_CAMERA_SENSOR WLAN WLAN_VENDOR_ATH WLAN_VENDOR_ATMEL WLAN_VENDOR_BROADCOM WLAN_VENDOR_INTERSIL WLAN_VENDOR_MARVELL WLAN_VENDOR_MEDIATEK WLAN_VENDOR_MICROCHIP WLAN_VENDOR_PURELIFI WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_SILABS WLAN_VENDOR_ZYDAS X86_X32_ABI ZEROPLUS_FF]
disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing current HEAD 5b87067cdd87affdb34f233e8fdd7805249335e2
testing commit 5b87067cdd87affdb34f233e8fdd7805249335e2 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: f7131166818cf6d367ae249288fbfcfe41cdfbf63480cc7195f9edb75c2b0fd3
run #0: crashed: BUG: soft lockup in sock_setsockopt
run #1: crashed: BUG: soft lockup in x64_sys_call
run #2: crashed: BUG: soft lockup in sock_setsockopt
run #3: crashed: BUG: soft lockup in sock_setsockopt
run #4: crashed: BUG: soft lockup in sock_setsockopt
run #5: crashed: BUG: soft lockup in sock_setsockopt
run #6: crashed: BUG: soft lockup in sock_setsockopt
run #7: crashed: BUG: soft lockup in sock_setsockopt
run #8: crashed: BUG: soft lockup in sock_setsockopt
run #9: crashed: BUG: soft lockup in sock_setsockopt
representative crash: BUG: soft lockup in sock_setsockopt, types: [HANG]
crash still not fixed/happens on the oldest tested release
revisions tested: 7, total time: 1h30m22.249743471s (build: 32m21.938811893s, test: 54m25.110054654s)
crash still not fixed or there were kernel test errors
commit msg: UPSTREAM: mm/memcg: use kmem_cache when alloc memcg pernode info
crash: BUG: soft lockup in sock_setsockopt
watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.2.211:1080]
Modules linked in:
CPU: 1 PID: 1080 Comm: syz.2.211 Not tainted 6.1.138-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:rol32 include/linux/bitops.h:127 [inline]
RIP: 0010:jhash2 include/linux/jhash.h:139 [inline]
RIP: 0010:rht_key_get_hash include/linux/rhashtable.h:142 [inline]
RIP: 0010:rht_key_hashfn include/linux/rhashtable.h:159 [inline]
RIP: 0010:__rhashtable_lookup include/linux/rhashtable.h:596 [inline]
RIP: 0010:rhashtable_lookup include/linux/rhashtable.h:638 [inline]
RIP: 0010:tipc_sk_lookup+0xa5/0x1e0 net/tipc/socket.c:3001
Code: 0b 44 29 c2 41 89 d0 41 c1 c0 19 31 d1 44 29 c1 31 c8 41 89 c8 41 c1 c0 10 44 29 c0 31 c2 41 89 c0 41 c1 c0 04 44 29 c2 31 d1 <c1> c2 0e 29 d1 31 c8 c1 c1 18 29 c8 ff ce 21 c6 83 7f 04 00 48 89
RSP: 0018:ffffc900017f37b0 EFLAGS: 00000202
RAX: 00000000478bf33f RBX: ffff888110868000 RCX: 000000006647be62
RDX: 000000006927f9ad RSI: 0000000000000100 RDI: ffff888112505000
RBP: ffffc900017f3800 R08: 0000000078bf33f4 R09: 000000008010000e
R10: 0000000000000000 R11: 0000000000000900 R12: 0000000015ea28bd
R13: 0000000015ea28bd R14: ffff8881135ba000 R15: ffffc900017f37cc
FS:  00007f50d04b16c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f50d04b0f98 CR3: 000000010c607000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 tipc_sk_rcv+0xef/0xa30 net/tipc/socket.c:2492
 tipc_node_xmit+0x1a6/0x460 net/tipc/node.c:1703
 tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
 tipc_node_distr_xmit+0xb1/0xf0 net/tipc/node.c:1783
 tipc_sk_rcv+0x58c/0xa30 net/tipc/socket.c:2501
 tipc_node_xmit+0x1a6/0x460 net/tipc/node.c:1703
 tipc_sk_push_backlog+0x113/0x130 net/tipc/socket.c:1316
 tipc_sk_conn_proto_rcv net/tipc/socket.c:1370 [inline]
 tipc_sk_proto_rcv+0x332/0x4b0 net/tipc/socket.c:2158
 tipc_sk_filter_rcv+0xa08/0xaa0 net/tipc/socket.c:2352
 tipc_sk_enqueue net/tipc/socket.c:2445 [inline]
 tipc_sk_rcv+0x2ae/0xa30 net/tipc/socket.c:2497
 tipc_node_xmit+0x1a6/0x460 net/tipc/node.c:1703
 tipc_node_xmit_skb net/tipc/node.c:1768 [inline]
 tipc_node_distr_xmit+0xb1/0xf0 net/tipc/node.c:1783
 tipc_sk_backlog_rcv+0x5c/0x80 net/tipc/socket.c:2412
 sk_backlog_rcv include/net/sock.h:1131 [inline]
 __release_sock+0x92/0x120 net/core/sock.c:2945
 release_sock net/core/sock.c:3519 [inline]
 sockopt_release_sock+0x3e/0xc0 net/core/sock.c:1067
 sk_setsockopt+0xdd2/0xe00 arch/x86/include/asm/bitops.h:-1
 sock_setsockopt+0xd/0x10 net/core/sock.c:1552
 __sys_setsockopt+0x138/0x1c0 net/socket.c:2274
 __do_sys_setsockopt net/socket.c:2289 [inline]
 __se_sys_setsockopt net/socket.c:2286 [inline]
 __x64_sys_setsockopt+0x1c/0x20 net/socket.c:2286
 x64_sys_call+0x124/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:55
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f50cf58cde9
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:00007f50d04b1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f50cf7a6080 RCX: 00007f50cf58cde9
RDX: 0000000000000021 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 00007f50cf60e2a0 R08: 0000000000000004 R09: 0000000000000000
R10: 0000400000000540 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f50cf7a6080 R15: 00007ffe2e9caa78
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1079 Comm: syz.2.211 Not tainted 6.1.138-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x1b1/0x440 kernel/locking/qspinlock.c:511
Code: 0f 94 c4 48 b8 eb 83 b5 80 46 86 c8 61 48 0f af c3 48 89 45 c0 66 41 bd 01 00 c6 07 00 c6 43 01 01 b9 00 80 ff ff eb 06 f3 90 <ff> c1 74 1e 80 3b 00 75 f5 66 b8 00 01 f0 66 44 0f b1 2b 0f b7 c0
RSP: 0018:ffffc90001837b60 EFLAGS: 00000206
RAX: 76e48cd0d899a000 RBX: ffff88810088a918 RCX: 00000000ffff9d87
RDX: 00000000000000a5 RSI: 0000000000000003 RDI: ffff888237c2c914
RBP: ffffc90001837ba0 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff81ffd2d0 R12: ffff88823fff0b80
R13: 0000000000040001 R14: 0000000000000000 R15: ffff888237c2c900
FS:  00007f50d04d26c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000400000000000 CR3: 000000010c607000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock include/linux/spinlock.h:187 [inline]
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:127 [inline]
 _raw_spin_lock_bh+0x36/0x40 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 lock_sock_nested+0x2e/0xe0 net/core/sock.c:3507
 lock_sock include/net/sock.h:1769 [inline]
 tipc_sendstream+0x22/0x50 net/tipc/socket.c:1549
 sock_sendmsg_nosec net/socket.c:716 [inline]
 __sock_sendmsg net/socket.c:728 [inline]
 ____sys_sendmsg+0x1b4/0x270 net/socket.c:2509
 ___sys_sendmsg+0x28a/0x2c0 net/socket.c:2563
 __sys_sendmsg net/socket.c:2592 [inline]
 __do_sys_sendmsg net/socket.c:2601 [inline]
 __se_sys_sendmsg net/socket.c:2599 [inline]
 __x64_sys_sendmsg+0xf6/0x130 net/socket.c:2599
 x64_sys_call+0x171/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:47
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f50cf58cde9
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:00007f50d04d2038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f50cf7a5fa0 RCX: 00007f50cf58cde9
RDX: 0000000000000000 RSI: 0000400000000500 RDI: 0000000000000004
RBP: 00007f50cf60e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f50cf7a5fa0 R15: 00007ffe2e9caa78
 </TASK>