Extracting prog: 1m5.206958211s
Minimizing prog: 9m17.395309998s
Simplifying prog options: 0s
Extracting C: 48.923540788s
Simplifying C: 7m10.401113609s
extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-setsockopt$inet_mreqsrc-socket$inet-sendto$inet-socket$inet_smc-setsockopt$inet_mreqsrc
detailed listing:
executing program 0:
r0 = socket$inet(0x2, 0x3, 0x2)
setsockopt$inet_mreqsrc(r0, 0x0, 0x27, 0x0, 0x0)
r1 = socket$inet(0x2, 0x4000000000000001, 0x100)
sendto$inet(r1, 0x0, 0x0, 0x200007fd, 0x0, 0x0)
r2 = socket$inet_smc(0x2b, 0x1, 0x0)
setsockopt$inet_mreqsrc(r2, 0x0, 0x27, 0x0, 0x0)
program crashed: possible deadlock in do_ip_setsockopt
single: successfully extracted reproducer
found reproducer with 6 syscalls
minimizing guilty program
testing program (duration=1m4.49689099s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-setsockopt$inet_mreqsrc-socket$inet-sendto$inet-socket$inet_smc
detailed listing:
executing program 0:
r0 = socket$inet(0x2, 0x3, 0x2)
setsockopt$inet_mreqsrc(r0, 0x0, 0x27, 0x0, 0x0)
r1 = socket$inet(0x2, 0x4000000000000001, 0x100)
sendto$inet(r1, 0x0, 0x0, 0x200007fd, 0x0, 0x0)
socket$inet_smc(0x2b, 0x1, 0x0)
program did not crash
testing program (duration=1m4.49689099s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-setsockopt$inet_mreqsrc-socket$inet-sendto$inet-setsockopt$inet_mreqsrc
detailed listing:
executing program 0:
r0 = socket$inet(0x2, 0x3, 0x2)
setsockopt$inet_mreqsrc(r0, 0x0, 0x27, 0x0, 0x0)
r1 = socket$inet(0x2, 0x4000000000000001, 0x100)
sendto$inet(r1, 0x0, 0x0, 0x200007fd, 0x0, 0x0)
setsockopt$inet_mreqsrc(0xffffffffffffffff, 0x0, 0x27, 0x0, 0x0)
program did not crash
testing program (duration=1m4.49689099s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-setsockopt$inet_mreqsrc-socket$inet-socket$inet_smc-setsockopt$inet_mreqsrc
detailed listing:
executing program 0:
r0 = socket$inet(0x2, 0x3, 0x2)
setsockopt$inet_mreqsrc(r0, 0x0, 0x27, 0x0, 0x0)
socket$inet(0x2, 0x4000000000000001, 0x100)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
setsockopt$inet_mreqsrc(r1, 0x0, 0x27, 0x0, 0x0)
program did not crash
testing program (duration=1m4.49689099s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-setsockopt$inet_mreqsrc-sendto$inet-socket$inet_smc-setsockopt$inet_mreqsrc
detailed listing:
executing program 0:
r0 = socket$inet(0x2, 0x3, 0x2)
setsockopt$inet_mreqsrc(r0, 0x0, 0x27, 0x0, 0x0)
sendto$inet(0xffffffffffffffff, 0x0, 0x0, 0x200007fd, 0x0, 0x0)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
setsockopt$inet_mreqsrc(r1, 0x0, 0x27, 0x0, 0x0)
program did not crash
testing program (duration=1m4.49689099s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-socket$inet-sendto$inet-socket$inet_smc-setsockopt$inet_mreqsrc
detailed listing:
executing program 0:
socket$inet(0x2, 0x3, 0x2)
r0 = socket$inet(0x2, 0x4000000000000001, 0x100)
sendto$inet(r0, 0x0, 0x0, 0x200007fd, 0x0, 0x0)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
setsockopt$inet_mreqsrc(r1, 0x0, 0x27, 0x0, 0x0)
program did not crash
testing program (duration=1m4.49689099s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$inet_mreqsrc-socket$inet-sendto$inet-socket$inet_smc-setsockopt$inet_mreqsrc
detailed listing:
executing program 0:
setsockopt$inet_mreqsrc(0xffffffffffffffff, 0x0, 0x27, 0x0, 0x0)
r0 = socket$inet(0x2, 0x4000000000000001, 0x100)
sendto$inet(r0, 0x0, 0x0, 0x200007fd, 0x0, 0x0)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
setsockopt$inet_mreqsrc(r1, 0x0, 0x27, 0x0, 0x0)
program did not crash
extracting C reproducer
testing compiled C program (duration=1m4.49689099s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-setsockopt$inet_mreqsrc-socket$inet-sendto$inet-socket$inet_smc-setsockopt$inet_mreqsrc
program crashed: possible deadlock in do_ip_setsockopt
simplifying C reproducer
testing compiled C program (duration=1m4.49689099s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-setsockopt$inet_mreqsrc-socket$inet-sendto$inet-socket$inet_smc-setsockopt$inet_mreqsrc
program crashed: possible deadlock in do_ip_setsockopt
testing compiled C program (duration=1m4.49689099s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-setsockopt$inet_mreqsrc-socket$inet-sendto$inet-socket$inet_smc-setsockopt$inet_mreqsrc
program crashed: possible deadlock in do_ip_setsockopt
testing compiled C program (duration=1m4.49689099s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-setsockopt$inet_mreqsrc-socket$inet-sendto$inet-socket$inet_smc-setsockopt$inet_mreqsrc
program crashed: possible deadlock in do_ip_setsockopt
testing compiled C program (duration=1m4.49689099s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-setsockopt$inet_mreqsrc-socket$inet-sendto$inet-socket$inet_smc-setsockopt$inet_mreqsrc
program crashed: possible deadlock in do_ip_setsockopt
testing compiled C program (duration=1m4.49689099s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-setsockopt$inet_mreqsrc-socket$inet-sendto$inet-socket$inet_smc-setsockopt$inet_mreqsrc
program crashed: possible deadlock in do_ip_setsockopt
testing compiled C program (duration=1m4.49689099s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-setsockopt$inet_mreqsrc-socket$inet-sendto$inet-socket$inet_smc-setsockopt$inet_mreqsrc
program crashed: possible deadlock in do_ip_setsockopt
testing compiled C program (duration=1m4.49689099s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-setsockopt$inet_mreqsrc-socket$inet-sendto$inet-socket$inet_smc-setsockopt$inet_mreqsrc
program crashed: possible deadlock in do_ip_setsockopt
reproducing took 18m21.926943339s
repro crashed as (corrupted=false):
======================================================
WARNING: possible circular locking dependency detected
6.14.0-rc5-syzkaller-00149-gd2b9d97e89c7 #0 Not tainted
------------------------------------------------------
syz-executor267/5825 is trying to acquire lock:
ffffffff8fed5a08 (rtnl_mutex){+.+.}-{4:4}, at: do_ip_setsockopt+0x11ef/0x3ae0 net/ipv4/ip_sockglue.c:1077
but task is already holding lock:
ffff888034f68aa8 (&smc->clcsock_release_lock){+.+.}-{4:4}, at: smc_setsockopt+0x1c3/0xd10 net/smc/af_smc.c:3073
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (&smc->clcsock_release_lock){+.+.}-{4:4}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
__mutex_lock_common kernel/locking/mutex.c:585 [inline]
__mutex_lock+0x19c/0x1010 kernel/locking/mutex.c:730
smc_switch_to_fallback+0x35/0xd90 net/smc/af_smc.c:903
smc_sendmsg+0x11f/0x530 net/smc/af_smc.c:2781
sock_sendmsg_nosec net/socket.c:718 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:733
__sys_sendto+0x363/0x4c0 net/socket.c:2187
__do_sys_sendto net/socket.c:2194 [inline]
__se_sys_sendto net/socket.c:2190 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2190
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #1 (sk_lock-AF_INET){+.+.}-{0:0}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
lock_sock_nested+0x48/0x100 net/core/sock.c:3662
do_ip_setsockopt+0x1966/0x3ae0 net/ipv4/ip_sockglue.c:1078
ip_setsockopt+0x63/0x100 net/ipv4/ip_sockglue.c:1417
do_sock_setsockopt+0x3af/0x720 net/socket.c:2303
__sys_setsockopt net/socket.c:2328 [inline]
__do_sys_setsockopt net/socket.c:2334 [inline]
__se_sys_setsockopt net/socket.c:2331 [inline]
__x64_sys_setsockopt+0x1ee/0x280 net/socket.c:2331
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #0 (rtnl_mutex){+.+.}-{4:4}:
check_prev_add kernel/locking/lockdep.c:3163 [inline]
check_prevs_add kernel/locking/lockdep.c:3282 [inline]
validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3906
__lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
__mutex_lock_common kernel/locking/mutex.c:585 [inline]
__mutex_lock+0x19c/0x1010 kernel/locking/mutex.c:730
do_ip_setsockopt+0x11ef/0x3ae0 net/ipv4/ip_sockglue.c:1077
ip_setsockopt+0x63/0x100 net/ipv4/ip_sockglue.c:1417
smc_setsockopt+0x275/0xd10 net/smc/af_smc.c:3081
do_sock_setsockopt+0x3af/0x720 net/socket.c:2303
__sys_setsockopt net/socket.c:2328 [inline]
__do_sys_setsockopt net/socket.c:2334 [inline]
__se_sys_setsockopt net/socket.c:2331 [inline]
__x64_sys_setsockopt+0x1ee/0x280 net/socket.c:2331
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
other info that might help us debug this:
Chain exists of:
rtnl_mutex --> sk_lock-AF_INET --> &smc->clcsock_release_lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&smc->clcsock_release_lock);
lock(sk_lock-AF_INET);
lock(&smc->clcsock_release_lock);
lock(rtnl_mutex);
*** DEADLOCK ***
1 lock held by syz-executor267/5825:
#0: ffff888034f68aa8 (&smc->clcsock_release_lock){+.+.}-{4:4}, at: smc_setsockopt+0x1c3/0xd10 net/smc/af_smc.c:3073
stack backtrace:
CPU: 0 UID: 0 PID: 5825 Comm: syz-executor267 Not tainted 6.14.0-rc5-syzkaller-00149-gd2b9d97e89c7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2076
check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2208
check_prev_add kernel/locking/lockdep.c:3163 [inline]
check_prevs_add kernel/locking/lockdep.c:3282 [inline]
validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3906
__lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
__mutex_lock_common kernel/locking/mutex.c:585 [inline]
__mutex_lock+0x19c/0x1010 kernel/locking/mutex.c:730
do_ip_setsockopt+0x11ef/0x3ae0 net/ipv4/ip_sockglue.c:1077
ip_setsockopt+0x63/0x100 net/ipv4/ip_sockglue.c:1417
smc_setsockopt+0x275/0xd10 net/smc/af_smc.c:3081
do_sock_setsockopt+0x3af/0x720 net/socket.c:2303
__sys_setsockopt net/socket.c:2328 [inline]
__do_sys_setsockopt net/socket.c:2334 [inline]
__se_sys_setsockopt net/socket.c:2331 [inline]
__x64_sys_setsockopt+0x1ee/0x280 net/socket.c:2331
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe1765daa79
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc6dbbc6c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe1765daa79
RDX: 0000000000000027 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007fe17664d5f0 R08: 0000000000000000 R09: 0000000000000006
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
</TASK>
final repro crashed as (corrupted=false):
======================================================
WARNING: possible circular locking dependency detected
6.14.0-rc5-syzkaller-00149-gd2b9d97e89c7 #0 Not tainted
------------------------------------------------------
syz-executor267/5825 is trying to acquire lock:
ffffffff8fed5a08 (rtnl_mutex){+.+.}-{4:4}, at: do_ip_setsockopt+0x11ef/0x3ae0 net/ipv4/ip_sockglue.c:1077
but task is already holding lock:
ffff888034f68aa8 (&smc->clcsock_release_lock){+.+.}-{4:4}, at: smc_setsockopt+0x1c3/0xd10 net/smc/af_smc.c:3073
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (&smc->clcsock_release_lock){+.+.}-{4:4}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
__mutex_lock_common kernel/locking/mutex.c:585 [inline]
__mutex_lock+0x19c/0x1010 kernel/locking/mutex.c:730
smc_switch_to_fallback+0x35/0xd90 net/smc/af_smc.c:903
smc_sendmsg+0x11f/0x530 net/smc/af_smc.c:2781
sock_sendmsg_nosec net/socket.c:718 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:733
__sys_sendto+0x363/0x4c0 net/socket.c:2187
__do_sys_sendto net/socket.c:2194 [inline]
__se_sys_sendto net/socket.c:2190 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2190
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #1 (sk_lock-AF_INET){+.+.}-{0:0}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
lock_sock_nested+0x48/0x100 net/core/sock.c:3662
do_ip_setsockopt+0x1966/0x3ae0 net/ipv4/ip_sockglue.c:1078
ip_setsockopt+0x63/0x100 net/ipv4/ip_sockglue.c:1417
do_sock_setsockopt+0x3af/0x720 net/socket.c:2303
__sys_setsockopt net/socket.c:2328 [inline]
__do_sys_setsockopt net/socket.c:2334 [inline]
__se_sys_setsockopt net/socket.c:2331 [inline]
__x64_sys_setsockopt+0x1ee/0x280 net/socket.c:2331
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #0 (rtnl_mutex){+.+.}-{4:4}:
check_prev_add kernel/locking/lockdep.c:3163 [inline]
check_prevs_add kernel/locking/lockdep.c:3282 [inline]
validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3906
__lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
__mutex_lock_common kernel/locking/mutex.c:585 [inline]
__mutex_lock+0x19c/0x1010 kernel/locking/mutex.c:730
do_ip_setsockopt+0x11ef/0x3ae0 net/ipv4/ip_sockglue.c:1077
ip_setsockopt+0x63/0x100 net/ipv4/ip_sockglue.c:1417
smc_setsockopt+0x275/0xd10 net/smc/af_smc.c:3081
do_sock_setsockopt+0x3af/0x720 net/socket.c:2303
__sys_setsockopt net/socket.c:2328 [inline]
__do_sys_setsockopt net/socket.c:2334 [inline]
__se_sys_setsockopt net/socket.c:2331 [inline]
__x64_sys_setsockopt+0x1ee/0x280 net/socket.c:2331
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
other info that might help us debug this:
Chain exists of:
rtnl_mutex --> sk_lock-AF_INET --> &smc->clcsock_release_lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&smc->clcsock_release_lock);
lock(sk_lock-AF_INET);
lock(&smc->clcsock_release_lock);
lock(rtnl_mutex);
*** DEADLOCK ***
1 lock held by syz-executor267/5825:
#0: ffff888034f68aa8 (&smc->clcsock_release_lock){+.+.}-{4:4}, at: smc_setsockopt+0x1c3/0xd10 net/smc/af_smc.c:3073
stack backtrace:
CPU: 0 UID: 0 PID: 5825 Comm: syz-executor267 Not tainted 6.14.0-rc5-syzkaller-00149-gd2b9d97e89c7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2076
check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2208
check_prev_add kernel/locking/lockdep.c:3163 [inline]
check_prevs_add kernel/locking/lockdep.c:3282 [inline]
validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3906
__lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
__mutex_lock_common kernel/locking/mutex.c:585 [inline]
__mutex_lock+0x19c/0x1010 kernel/locking/mutex.c:730
do_ip_setsockopt+0x11ef/0x3ae0 net/ipv4/ip_sockglue.c:1077
ip_setsockopt+0x63/0x100 net/ipv4/ip_sockglue.c:1417
smc_setsockopt+0x275/0xd10 net/smc/af_smc.c:3081
do_sock_setsockopt+0x3af/0x720 net/socket.c:2303
__sys_setsockopt net/socket.c:2328 [inline]
__do_sys_setsockopt net/socket.c:2334 [inline]
__se_sys_setsockopt net/socket.c:2331 [inline]
__x64_sys_setsockopt+0x1ee/0x280 net/socket.c:2331
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe1765daa79
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc6dbbc6c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe1765daa79
RDX: 0000000000000027 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007fe17664d5f0 R08: 0000000000000000 R09: 0000000000000006
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
</TASK>