Extracting prog: 1m32.414852782s
Minimizing prog: 15m40.198839344s
Simplifying prog options: 3m18.02685912s
Extracting C: 57.485724705s
Simplifying C: 0s


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:6 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$inet6_sctp-getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3-prlimit64-sched_setscheduler-getpid-sched_setscheduler-socket$inet6_sctp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nfc-fsopen-socket$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK-socket$nl_rdma-syz_usb_connect$hid-openat$rdma_cm-write$RDMA_USER_CM_CMD_CREATE_ID-sendmsg$RDMA_NLDEV_CMD_PORT_GET
detailed listing:
executing program 0:
r0 = socket$inet6_sctp(0xa, 0x1, 0x84)
getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f00000000c0)={0x0, 0x10, &(0x7f00000002c0)=[@in={0x2, 0x4e20, @local}]}, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
r1 = getpid()
sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x4)
socket$inet6_sctp(0xa, 0x1, 0x84)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nfc(&(0x7f00000002c0), r2)
fsopen(&(0x7f0000000040)='cifs\x00', 0x1)
r3 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r3, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB="38000000031401002abd7000fedbdf250900020073797a3000000000080041007278650014003300626f6e6430"], 0x38}, 0x1, 0x0, 0x0, 0x4000840}, 0x24004000)
r4 = socket$nl_rdma(0x10, 0x3, 0x14)
syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000180)=ANY=[@ANYBLOB="12013f00000000407f04ffff0000000000010902"], 0x0)
r5 = openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)
write$RDMA_USER_CM_CMD_CREATE_ID(r5, &(0x7f0000000140)={0x0, 0x18, 0xfa00, {0x2, &(0x7f0000000040), 0x111, 0x2}}, 0x20)
sendmsg$RDMA_NLDEV_CMD_PORT_GET(r4, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000140)=ANY=[@ANYBLOB="200000000414010026bd7000ffdbdf2508000100000000000800"], 0x20}, 0x1, 0x0, 0x0, 0x20048000}, 0x20000000)

program crashed: possible deadlock in zswap_store
single: successfully extracted reproducer
found reproducer with 17 syscalls
minimizing guilty program
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$inet6_sctp-getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3-prlimit64-sched_setscheduler-getpid-sched_setscheduler-socket$inet6_sctp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nfc-fsopen-socket$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK-socket$nl_rdma-syz_usb_connect$hid-openat$rdma_cm-write$RDMA_USER_CM_CMD_CREATE_ID
detailed listing:
executing program 0:
r0 = socket$inet6_sctp(0xa, 0x1, 0x84)
getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f00000000c0)={0x0, 0x10, &(0x7f00000002c0)=[@in={0x2, 0x4e20, @local}]}, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
r1 = getpid()
sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x4)
socket$inet6_sctp(0xa, 0x1, 0x84)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nfc(&(0x7f00000002c0), r2)
fsopen(&(0x7f0000000040)='cifs\x00', 0x1)
r3 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r3, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB="38000000031401002abd7000fedbdf250900020073797a3000000000080041007278650014003300626f6e6430"], 0x38}, 0x1, 0x0, 0x0, 0x4000840}, 0x24004000)
socket$nl_rdma(0x10, 0x3, 0x14)
syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000180)=ANY=[@ANYBLOB="12013f00000000407f04ffff0000000000010902"], 0x0)
r4 = openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)
write$RDMA_USER_CM_CMD_CREATE_ID(r4, &(0x7f0000000140)={0x0, 0x18, 0xfa00, {0x2, &(0x7f0000000040), 0x111, 0x2}}, 0x20)

program crashed: possible deadlock in zswap_store
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$inet6_sctp-getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3-prlimit64-sched_setscheduler-getpid-sched_setscheduler-socket$inet6_sctp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nfc-fsopen-socket$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK-socket$nl_rdma-syz_usb_connect$hid-openat$rdma_cm
detailed listing:
executing program 0:
r0 = socket$inet6_sctp(0xa, 0x1, 0x84)
getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f00000000c0)={0x0, 0x10, &(0x7f00000002c0)=[@in={0x2, 0x4e20, @local}]}, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
r1 = getpid()
sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x4)
socket$inet6_sctp(0xa, 0x1, 0x84)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nfc(&(0x7f00000002c0), r2)
fsopen(&(0x7f0000000040)='cifs\x00', 0x1)
r3 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r3, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB="38000000031401002abd7000fedbdf250900020073797a3000000000080041007278650014003300626f6e6430"], 0x38}, 0x1, 0x0, 0x0, 0x4000840}, 0x24004000)
socket$nl_rdma(0x10, 0x3, 0x14)
syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000180)=ANY=[@ANYBLOB="12013f00000000407f04ffff0000000000010902"], 0x0)
openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)

program crashed: possible deadlock in zswap_store
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$inet6_sctp-getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3-prlimit64-sched_setscheduler-getpid-sched_setscheduler-socket$inet6_sctp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nfc-fsopen-socket$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK-socket$nl_rdma-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = socket$inet6_sctp(0xa, 0x1, 0x84)
getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f00000000c0)={0x0, 0x10, &(0x7f00000002c0)=[@in={0x2, 0x4e20, @local}]}, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
r1 = getpid()
sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x4)
socket$inet6_sctp(0xa, 0x1, 0x84)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nfc(&(0x7f00000002c0), r2)
fsopen(&(0x7f0000000040)='cifs\x00', 0x1)
r3 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r3, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB="38000000031401002abd7000fedbdf250900020073797a3000000000080041007278650014003300626f6e6430"], 0x38}, 0x1, 0x0, 0x0, 0x4000840}, 0x24004000)
socket$nl_rdma(0x10, 0x3, 0x14)
syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000180)=ANY=[@ANYBLOB="12013f00000000407f04ffff0000000000010902"], 0x0)

program did not crash
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$inet6_sctp-getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3-prlimit64-sched_setscheduler-getpid-sched_setscheduler-socket$inet6_sctp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nfc-fsopen-socket$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK-socket$nl_rdma-openat$rdma_cm
detailed listing:
executing program 0:
r0 = socket$inet6_sctp(0xa, 0x1, 0x84)
getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f00000000c0)={0x0, 0x10, &(0x7f00000002c0)=[@in={0x2, 0x4e20, @local}]}, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
r1 = getpid()
sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x4)
socket$inet6_sctp(0xa, 0x1, 0x84)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nfc(&(0x7f00000002c0), r2)
fsopen(&(0x7f0000000040)='cifs\x00', 0x1)
r3 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r3, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB="38000000031401002abd7000fedbdf250900020073797a3000000000080041007278650014003300626f6e6430"], 0x38}, 0x1, 0x0, 0x0, 0x4000840}, 0x24004000)
socket$nl_rdma(0x10, 0x3, 0x14)
openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)

program crashed: possible deadlock in zswap_store
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$inet6_sctp-getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3-prlimit64-sched_setscheduler-getpid-sched_setscheduler-socket$inet6_sctp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nfc-fsopen-socket$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK-openat$rdma_cm
detailed listing:
executing program 0:
r0 = socket$inet6_sctp(0xa, 0x1, 0x84)
getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f00000000c0)={0x0, 0x10, &(0x7f00000002c0)=[@in={0x2, 0x4e20, @local}]}, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
r1 = getpid()
sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x4)
socket$inet6_sctp(0xa, 0x1, 0x84)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nfc(&(0x7f00000002c0), r2)
fsopen(&(0x7f0000000040)='cifs\x00', 0x1)
r3 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r3, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB="38000000031401002abd7000fedbdf250900020073797a3000000000080041007278650014003300626f6e6430"], 0x38}, 0x1, 0x0, 0x0, 0x4000840}, 0x24004000)
openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)

program crashed: possible deadlock in zswap_store
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$inet6_sctp-getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3-prlimit64-sched_setscheduler-getpid-sched_setscheduler-socket$inet6_sctp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nfc-fsopen-socket$nl_rdma-openat$rdma_cm
detailed listing:
executing program 0:
r0 = socket$inet6_sctp(0xa, 0x1, 0x84)
getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f00000000c0)={0x0, 0x10, &(0x7f00000002c0)=[@in={0x2, 0x4e20, @local}]}, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
r1 = getpid()
sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x4)
socket$inet6_sctp(0xa, 0x1, 0x84)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nfc(&(0x7f00000002c0), r2)
fsopen(&(0x7f0000000040)='cifs\x00', 0x1)
socket$nl_rdma(0x10, 0x3, 0x14)
openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)

program crashed: possible deadlock in zswap_store
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$inet6_sctp-getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3-prlimit64-sched_setscheduler-getpid-sched_setscheduler-socket$inet6_sctp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nfc-fsopen-openat$rdma_cm
detailed listing:
executing program 0:
r0 = socket$inet6_sctp(0xa, 0x1, 0x84)
getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f00000000c0)={0x0, 0x10, &(0x7f00000002c0)=[@in={0x2, 0x4e20, @local}]}, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
r1 = getpid()
sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x4)
socket$inet6_sctp(0xa, 0x1, 0x84)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nfc(&(0x7f00000002c0), r2)
fsopen(&(0x7f0000000040)='cifs\x00', 0x1)
openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)

program did not crash
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$inet6_sctp-getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3-prlimit64-sched_setscheduler-getpid-sched_setscheduler-socket$inet6_sctp-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nfc-socket$nl_rdma-openat$rdma_cm
detailed listing:
executing program 0:
r0 = socket$inet6_sctp(0xa, 0x1, 0x84)
getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f00000000c0)={0x0, 0x10, &(0x7f00000002c0)=[@in={0x2, 0x4e20, @local}]}, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
r1 = getpid()
sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x4)
socket$inet6_sctp(0xa, 0x1, 0x84)
r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nfc(&(0x7f00000002c0), r2)
socket$nl_rdma(0x10, 0x3, 0x14)
openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)

program crashed: possible deadlock in zswap_store
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$inet6_sctp-getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3-prlimit64-sched_setscheduler-getpid-sched_setscheduler-socket$inet6_sctp-syz_init_net_socket$nl_generic-socket$nl_rdma-openat$rdma_cm
detailed listing:
executing program 0:
r0 = socket$inet6_sctp(0xa, 0x1, 0x84)
getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f00000000c0)={0x0, 0x10, &(0x7f00000002c0)=[@in={0x2, 0x4e20, @local}]}, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
r1 = getpid()
sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x4)
socket$inet6_sctp(0xa, 0x1, 0x84)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
socket$nl_rdma(0x10, 0x3, 0x14)
openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)

program did not crash
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$inet6_sctp-getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3-prlimit64-sched_setscheduler-getpid-sched_setscheduler-socket$inet6_sctp-syz_genetlink_get_family_id$nfc-socket$nl_rdma-openat$rdma_cm
detailed listing:
executing program 0:
r0 = socket$inet6_sctp(0xa, 0x1, 0x84)
getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f00000000c0)={0x0, 0x10, &(0x7f00000002c0)=[@in={0x2, 0x4e20, @local}]}, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
r1 = getpid()
sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x4)
socket$inet6_sctp(0xa, 0x1, 0x84)
syz_genetlink_get_family_id$nfc(&(0x7f00000002c0), 0xffffffffffffffff)
socket$nl_rdma(0x10, 0x3, 0x14)
openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)

program crashed: possible deadlock in zswap_store
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$inet6_sctp-getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3-prlimit64-sched_setscheduler-getpid-sched_setscheduler-syz_genetlink_get_family_id$nfc-socket$nl_rdma-openat$rdma_cm
detailed listing:
executing program 0:
r0 = socket$inet6_sctp(0xa, 0x1, 0x84)
getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f00000000c0)={0x0, 0x10, &(0x7f00000002c0)=[@in={0x2, 0x4e20, @local}]}, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
r1 = getpid()
sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x4)
syz_genetlink_get_family_id$nfc(&(0x7f00000002c0), 0xffffffffffffffff)
socket$nl_rdma(0x10, 0x3, 0x14)
openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)

program crashed: possible deadlock in zswap_store
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$inet6_sctp-getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3-prlimit64-sched_setscheduler-getpid-syz_genetlink_get_family_id$nfc-socket$nl_rdma-openat$rdma_cm
detailed listing:
executing program 0:
r0 = socket$inet6_sctp(0xa, 0x1, 0x84)
getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f00000000c0)={0x0, 0x10, &(0x7f00000002c0)=[@in={0x2, 0x4e20, @local}]}, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
getpid()
syz_genetlink_get_family_id$nfc(&(0x7f00000002c0), 0xffffffffffffffff)
socket$nl_rdma(0x10, 0x3, 0x14)
openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)

program crashed: possible deadlock in zswap_store
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$inet6_sctp-getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3-prlimit64-sched_setscheduler-syz_genetlink_get_family_id$nfc-socket$nl_rdma-openat$rdma_cm
detailed listing:
executing program 0:
r0 = socket$inet6_sctp(0xa, 0x1, 0x84)
getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f00000000c0)={0x0, 0x10, &(0x7f00000002c0)=[@in={0x2, 0x4e20, @local}]}, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
syz_genetlink_get_family_id$nfc(&(0x7f00000002c0), 0xffffffffffffffff)
socket$nl_rdma(0x10, 0x3, 0x14)
openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)

program crashed: possible deadlock in zswap_store
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$inet6_sctp-getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3-prlimit64-syz_genetlink_get_family_id$nfc-socket$nl_rdma-openat$rdma_cm
detailed listing:
executing program 0:
r0 = socket$inet6_sctp(0xa, 0x1, 0x84)
getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f00000000c0)={0x0, 0x10, &(0x7f00000002c0)=[@in={0x2, 0x4e20, @local}]}, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
syz_genetlink_get_family_id$nfc(&(0x7f00000002c0), 0xffffffffffffffff)
socket$nl_rdma(0x10, 0x3, 0x14)
openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)

program did not crash
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$inet6_sctp-getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3-sched_setscheduler-syz_genetlink_get_family_id$nfc-socket$nl_rdma-openat$rdma_cm
detailed listing:
executing program 0:
r0 = socket$inet6_sctp(0xa, 0x1, 0x84)
getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f00000000c0)={0x0, 0x10, &(0x7f00000002c0)=[@in={0x2, 0x4e20, @local}]}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
syz_genetlink_get_family_id$nfc(&(0x7f00000002c0), 0xffffffffffffffff)
socket$nl_rdma(0x10, 0x3, 0x14)
openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)

program crashed: possible deadlock in zswap_store
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$inet6_sctp-sched_setscheduler-syz_genetlink_get_family_id$nfc-socket$nl_rdma-openat$rdma_cm
detailed listing:
executing program 0:
socket$inet6_sctp(0xa, 0x1, 0x84)
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
syz_genetlink_get_family_id$nfc(&(0x7f00000002c0), 0xffffffffffffffff)
socket$nl_rdma(0x10, 0x3, 0x14)
openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)

program crashed: possible deadlock in zswap_store
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): sched_setscheduler-syz_genetlink_get_family_id$nfc-socket$nl_rdma-openat$rdma_cm
detailed listing:
executing program 0:
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
syz_genetlink_get_family_id$nfc(&(0x7f00000002c0), 0xffffffffffffffff)
socket$nl_rdma(0x10, 0x3, 0x14)
openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)

program crashed: possible deadlock in zswap_store
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): sched_setscheduler-syz_genetlink_get_family_id$nfc-socket$nl_rdma-openat$rdma_cm
detailed listing:
executing program 0:
sched_setscheduler(0x0, 0x1, 0x0)
syz_genetlink_get_family_id$nfc(&(0x7f00000002c0), 0xffffffffffffffff)
socket$nl_rdma(0x10, 0x3, 0x14)
openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)

program crashed: possible deadlock in zswap_store
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): sched_setscheduler-syz_genetlink_get_family_id$nfc-socket$nl_rdma-openat$rdma_cm
detailed listing:
executing program 0:
sched_setscheduler(0x0, 0x1, 0x0)
syz_genetlink_get_family_id$nfc(0x0, 0xffffffffffffffff)
socket$nl_rdma(0x10, 0x3, 0x14)
openat$rdma_cm(0xffffffffffffff9c, &(0x7f0000002540), 0x2, 0x0)

program crashed: possible deadlock in zswap_store
testing program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): sched_setscheduler-syz_genetlink_get_family_id$nfc-socket$nl_rdma-openat$rdma_cm
detailed listing:
executing program 0:
sched_setscheduler(0x0, 0x1, 0x0)
syz_genetlink_get_family_id$nfc(0x0, 0xffffffffffffffff)
socket$nl_rdma(0x10, 0x3, 0x14)
openat$rdma_cm(0xffffffffffffff9c, 0x0, 0x2, 0x0)

program crashed: possible deadlock in zswap_store
extracting C reproducer
testing compiled C program (duration=31.631916402s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): sched_setscheduler-syz_genetlink_get_family_id$nfc-socket$nl_rdma-openat$rdma_cm
program did not crash
simplifying guilty program options
testing program (duration=31.631916402s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sched_setscheduler-syz_genetlink_get_family_id$nfc-socket$nl_rdma-openat$rdma_cm
detailed listing:
executing program 0:
sched_setscheduler(0x0, 0x1, 0x0)
syz_genetlink_get_family_id$nfc(0x0, 0xffffffffffffffff)
socket$nl_rdma(0x10, 0x3, 0x14)
openat$rdma_cm(0xffffffffffffff9c, 0x0, 0x2, 0x0)

program crashed: possible deadlock in zswap_store
extracting C reproducer
testing compiled C program (duration=31.631916402s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 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}}): sched_setscheduler-syz_genetlink_get_family_id$nfc-socket$nl_rdma-openat$rdma_cm
program did not crash
testing program (duration=31.631916402s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sched_setscheduler-syz_genetlink_get_family_id$nfc-socket$nl_rdma-openat$rdma_cm
detailed listing:
executing program 0:
sched_setscheduler(0x0, 0x1, 0x0)
syz_genetlink_get_family_id$nfc(0x0, 0xffffffffffffffff)
socket$nl_rdma(0x10, 0x3, 0x14)
openat$rdma_cm(0xffffffffffffff9c, 0x0, 0x2, 0x0)

program did not crash
testing program (duration=31.631916402s, {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}}): sched_setscheduler-syz_genetlink_get_family_id$nfc-socket$nl_rdma-openat$rdma_cm
detailed listing:
executing program 0:
sched_setscheduler(0x0, 0x1, 0x0)
syz_genetlink_get_family_id$nfc(0x0, 0xffffffffffffffff)
socket$nl_rdma(0x10, 0x3, 0x14)
openat$rdma_cm(0xffffffffffffff9c, 0x0, 0x2, 0x0)

program did not crash
reproducing took 21m37.506879877s
repro crashed as (corrupted=false):
======================================================
WARNING: possible circular locking dependency detected
6.13.0-rc7-syzkaller-00149-g9bffa1ad25b8 #0 Not tainted
------------------------------------------------------
syz-executor/5330 is trying to acquire lock:
ffffe8ffffc37f50 (&per_cpu_ptr(pool->acomp_ctx, cpu)->mutex){+.+.}-{4:4}, at: acomp_ctx_get_cpu_lock mm/zswap.c:899 [inline]
ffffe8ffffc37f50 (&per_cpu_ptr(pool->acomp_ctx, cpu)->mutex){+.+.}-{4:4}, at: zswap_compress mm/zswap.c:931 [inline]
ffffe8ffffc37f50 (&per_cpu_ptr(pool->acomp_ctx, cpu)->mutex){+.+.}-{4:4}, at: zswap_store_page mm/zswap.c:1456 [inline]
ffffe8ffffc37f50 (&per_cpu_ptr(pool->acomp_ctx, cpu)->mutex){+.+.}-{4:4}, at: zswap_store+0xa3b/0x1c30 mm/zswap.c:1563

but task is already holding lock:
ffffffff8ea36f00 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:3926 [inline]
ffffffff8ea36f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim+0xd4/0x3c0 mm/page_alloc.c:3951

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (fs_reclaim){+.+.}-{0:0}:
       lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
       __fs_reclaim_acquire mm/page_alloc.c:3853 [inline]
       fs_reclaim_acquire+0x88/0x130 mm/page_alloc.c:3867
       might_alloc include/linux/sched/mm.h:318 [inline]
       slab_pre_alloc_hook mm/slub.c:4070 [inline]
       slab_alloc_node mm/slub.c:4148 [inline]
       __kmalloc_cache_node_noprof+0x40/0x3a0 mm/slub.c:4337
       kmalloc_node_noprof include/linux/slab.h:924 [inline]
       zswap_cpu_comp_prepare+0xdc/0x400 mm/zswap.c:828
       cpuhp_invoke_callback+0x415/0x830 kernel/cpu.c:204
       cpuhp_issue_call+0x46f/0x7e0
       __cpuhp_state_add_instance_cpuslocked+0x1ed/0x500 kernel/cpu.c:2437
       __cpuhp_state_add_instance+0x27/0x40 kernel/cpu.c:2458
       cpuhp_state_add_instance include/linux/cpuhotplug.h:386 [inline]
       zswap_pool_create+0x38c/0x680 mm/zswap.c:291
       zswap_setup+0x32a/0x4b0 mm/zswap.c:1811
       do_one_initcall+0x248/0x870 init/main.c:1266
       do_initcall_level+0x157/0x210 init/main.c:1328
       do_initcalls+0x3f/0x80 init/main.c:1344
       kernel_init_freeable+0x435/0x5d0 init/main.c:1577
       kernel_init+0x1d/0x2b0 init/main.c:1466
       ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
       ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

-> #0 (&per_cpu_ptr(pool->acomp_ctx, cpu)->mutex){+.+.}-{4:4}:
       check_prev_add kernel/locking/lockdep.c:3161 [inline]
       check_prevs_add kernel/locking/lockdep.c:3280 [inline]
       validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904
       __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226
       lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
       __mutex_lock_common kernel/locking/mutex.c:585 [inline]
       __mutex_lock+0x1ac/0xee0 kernel/locking/mutex.c:735
       acomp_ctx_get_cpu_lock mm/zswap.c:899 [inline]
       zswap_compress mm/zswap.c:931 [inline]
       zswap_store_page mm/zswap.c:1456 [inline]
       zswap_store+0xa3b/0x1c30 mm/zswap.c:1563
       swap_writepage+0x647/0xce0 mm/page_io.c:279
       shmem_writepage+0x1248/0x1610 mm/shmem.c:1579
       pageout mm/vmscan.c:696 [inline]
       shrink_folio_list+0x3b68/0x5ca0 mm/vmscan.c:1374
       evict_folios+0x3c92/0x58c0 mm/vmscan.c:4600
       try_to_shrink_lruvec+0x9a6/0xc70 mm/vmscan.c:4799
       shrink_one+0x3b9/0x850 mm/vmscan.c:4844
       shrink_many mm/vmscan.c:4907 [inline]
       lru_gen_shrink_node mm/vmscan.c:4985 [inline]
       shrink_node+0x37c5/0x3e50 mm/vmscan.c:5966
       shrink_zones mm/vmscan.c:6225 [inline]
       do_try_to_free_pages+0x78c/0x1cf0 mm/vmscan.c:6287
       try_to_free_pages+0x47c/0x1050 mm/vmscan.c:6537
       __perform_reclaim mm/page_alloc.c:3929 [inline]
       __alloc_pages_direct_reclaim+0x178/0x3c0 mm/page_alloc.c:3951
       __alloc_pages_slowpath+0x764/0x1020 mm/page_alloc.c:4382
       __alloc_pages_noprof+0x49b/0x710 mm/page_alloc.c:4766
       alloc_pages_mpol_noprof+0x3e1/0x780 mm/mempolicy.c:2269
       alloc_slab_page+0x6a/0x110 mm/slub.c:2423
       allocate_slab+0x1c0/0x2b0 mm/slub.c:2597
       new_slab mm/slub.c:2642 [inline]
       ___slab_alloc+0xc27/0x14a0 mm/slub.c:3830
       __slab_alloc+0x58/0xa0 mm/slub.c:3920
       __slab_alloc_node mm/slub.c:3995 [inline]
       slab_alloc_node mm/slub.c:4156 [inline]
       __do_kmalloc_node mm/slub.c:4297 [inline]
       __kmalloc_noprof+0x2e6/0x4c0 mm/slub.c:4310
       kmalloc_noprof include/linux/slab.h:905 [inline]
       sk_prot_alloc+0xe0/0x210 net/core/sock.c:2168
       sk_alloc+0x38/0x370 net/core/sock.c:2221
       __netlink_create+0x65/0x260 net/netlink/af_netlink.c:629
       netlink_create+0x3ab/0x560 net/netlink/af_netlink.c:687
       __sock_create+0x4c0/0xa30 net/socket.c:1558
       sock_create net/socket.c:1616 [inline]
       __sys_socket_create net/socket.c:1653 [inline]
       __sys_socket+0x150/0x3c0 net/socket.c:1700
       __do_sys_socket net/socket.c:1714 [inline]
       __se_sys_socket net/socket.c:1712 [inline]
       __x64_sys_socket+0x7a/0x90 net/socket.c:1712
       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:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(fs_reclaim);
                               lock(&per_cpu_ptr(pool->acomp_ctx, cpu)->mutex);
                               lock(fs_reclaim);
  lock(&per_cpu_ptr(pool->acomp_ctx, cpu)->mutex);

 *** DEADLOCK ***

1 lock held by syz-executor/5330:
 #0: ffffffff8ea36f00 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:3926 [inline]
 #0: ffffffff8ea36f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim+0xd4/0x3c0 mm/page_alloc.c:3951

stack backtrace:
CPU: 0 UID: 0 PID: 5330 Comm: syz-executor Not tainted 6.13.0-rc7-syzkaller-00149-g9bffa1ad25b8 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
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:2074
 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2206
 check_prev_add kernel/locking/lockdep.c:3161 [inline]
 check_prevs_add kernel/locking/lockdep.c:3280 [inline]
 validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904
 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
 __mutex_lock_common kernel/locking/mutex.c:585 [inline]
 __mutex_lock+0x1ac/0xee0 kernel/locking/mutex.c:735
 acomp_ctx_get_cpu_lock mm/zswap.c:899 [inline]
 zswap_compress mm/zswap.c:931 [inline]
 zswap_store_page mm/zswap.c:1456 [inline]
 zswap_store+0xa3b/0x1c30 mm/zswap.c:1563
 swap_writepage+0x647/0xce0 mm/page_io.c:279
 shmem_writepage+0x1248/0x1610 mm/shmem.c:1579
 pageout mm/vmscan.c:696 [inline]
 shrink_folio_list+0x3b68/0x5ca0 mm/vmscan.c:1374
 evict_folios+0x3c92/0x58c0 mm/vmscan.c:4600
 try_to_shrink_lruvec+0x9a6/0xc70 mm/vmscan.c:4799
 shrink_one+0x3b9/0x850 mm/vmscan.c:4844
 shrink_many mm/vmscan.c:4907 [inline]
 lru_gen_shrink_node mm/vmscan.c:4985 [inline]
 shrink_node+0x37c5/0x3e50 mm/vmscan.c:5966
 shrink_zones mm/vmscan.c:6225 [inline]
 do_try_to_free_pages+0x78c/0x1cf0 mm/vmscan.c:6287
 try_to_free_pages+0x47c/0x1050 mm/vmscan.c:6537
 __perform_reclaim mm/page_alloc.c:3929 [inline]
 __alloc_pages_direct_reclaim+0x178/0x3c0 mm/page_alloc.c:3951
 __alloc_pages_slowpath+0x764/0x1020 mm/page_alloc.c:4382
 __alloc_pages_noprof+0x49b/0x710 mm/page_alloc.c:4766
 alloc_pages_mpol_noprof+0x3e1/0x780 mm/mempolicy.c:2269
 alloc_slab_page+0x6a/0x110 mm/slub.c:2423
 allocate_slab+0x1c0/0x2b0 mm/slub.c:2597
 new_slab mm/slub.c:2642 [inline]
 ___slab_alloc+0xc27/0x14a0 mm/slub.c:3830
 __slab_alloc+0x58/0xa0 mm/slub.c:3920
 __slab_alloc_node mm/slub.c:3995 [inline]
 slab_alloc_node mm/slub.c:4156 [inline]
 __do_kmalloc_node mm/slub.c:4297 [inline]
 __kmalloc_noprof+0x2e6/0x4c0 mm/slub.c:4310
 kmalloc_noprof include/linux/slab.h:905 [inline]
 sk_prot_alloc+0xe0/0x210 net/core/sock.c:2168
 sk_alloc+0x38/0x370 net/core/sock.c:2221
 __netlink_create+0x65/0x260 net/netlink/af_netlink.c:629
 netlink_create+0x3ab/0x560 net/netlink/af_netlink.c:687
 __sock_create+0x4c0/0xa30 net/socket.c:1558
 sock_create net/socket.c:1616 [inline]
 __sys_socket_create net/socket.c:1653 [inline]
 __sys_socket+0x150/0x3c0 net/socket.c:1700
 __do_sys_socket net/socket.c:1714 [inline]
 __se_sys_socket net/socket.c:1712 [inline]
 __x64_sys_socket+0x7a/0x90 net/socket.c:1712
 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: 0033:0x7f18ea987c47
Code: f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 b8 29 00 00 00 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:00007ffe0f7700d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007ffe0f770130 RCX: 00007f18ea987c47
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000010
RBP: 00007f18eaa02473 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f18eaa29d2b
R13: 00007ffe0f770208 R14: 0000000000000009 R15: 0000000000000000
 </TASK>
syz-executor (5330) used greatest stack depth: 17616 bytes left

final repro crashed as (corrupted=false):
======================================================
WARNING: possible circular locking dependency detected
6.13.0-rc7-syzkaller-00149-g9bffa1ad25b8 #0 Not tainted
------------------------------------------------------
syz-executor/5330 is trying to acquire lock:
ffffe8ffffc37f50 (&per_cpu_ptr(pool->acomp_ctx, cpu)->mutex){+.+.}-{4:4}, at: acomp_ctx_get_cpu_lock mm/zswap.c:899 [inline]
ffffe8ffffc37f50 (&per_cpu_ptr(pool->acomp_ctx, cpu)->mutex){+.+.}-{4:4}, at: zswap_compress mm/zswap.c:931 [inline]
ffffe8ffffc37f50 (&per_cpu_ptr(pool->acomp_ctx, cpu)->mutex){+.+.}-{4:4}, at: zswap_store_page mm/zswap.c:1456 [inline]
ffffe8ffffc37f50 (&per_cpu_ptr(pool->acomp_ctx, cpu)->mutex){+.+.}-{4:4}, at: zswap_store+0xa3b/0x1c30 mm/zswap.c:1563

but task is already holding lock:
ffffffff8ea36f00 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:3926 [inline]
ffffffff8ea36f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim+0xd4/0x3c0 mm/page_alloc.c:3951

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #1 (fs_reclaim){+.+.}-{0:0}:
       lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
       __fs_reclaim_acquire mm/page_alloc.c:3853 [inline]
       fs_reclaim_acquire+0x88/0x130 mm/page_alloc.c:3867
       might_alloc include/linux/sched/mm.h:318 [inline]
       slab_pre_alloc_hook mm/slub.c:4070 [inline]
       slab_alloc_node mm/slub.c:4148 [inline]
       __kmalloc_cache_node_noprof+0x40/0x3a0 mm/slub.c:4337
       kmalloc_node_noprof include/linux/slab.h:924 [inline]
       zswap_cpu_comp_prepare+0xdc/0x400 mm/zswap.c:828
       cpuhp_invoke_callback+0x415/0x830 kernel/cpu.c:204
       cpuhp_issue_call+0x46f/0x7e0
       __cpuhp_state_add_instance_cpuslocked+0x1ed/0x500 kernel/cpu.c:2437
       __cpuhp_state_add_instance+0x27/0x40 kernel/cpu.c:2458
       cpuhp_state_add_instance include/linux/cpuhotplug.h:386 [inline]
       zswap_pool_create+0x38c/0x680 mm/zswap.c:291
       zswap_setup+0x32a/0x4b0 mm/zswap.c:1811
       do_one_initcall+0x248/0x870 init/main.c:1266
       do_initcall_level+0x157/0x210 init/main.c:1328
       do_initcalls+0x3f/0x80 init/main.c:1344
       kernel_init_freeable+0x435/0x5d0 init/main.c:1577
       kernel_init+0x1d/0x2b0 init/main.c:1466
       ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
       ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

-> #0 (&per_cpu_ptr(pool->acomp_ctx, cpu)->mutex){+.+.}-{4:4}:
       check_prev_add kernel/locking/lockdep.c:3161 [inline]
       check_prevs_add kernel/locking/lockdep.c:3280 [inline]
       validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904
       __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226
       lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
       __mutex_lock_common kernel/locking/mutex.c:585 [inline]
       __mutex_lock+0x1ac/0xee0 kernel/locking/mutex.c:735
       acomp_ctx_get_cpu_lock mm/zswap.c:899 [inline]
       zswap_compress mm/zswap.c:931 [inline]
       zswap_store_page mm/zswap.c:1456 [inline]
       zswap_store+0xa3b/0x1c30 mm/zswap.c:1563
       swap_writepage+0x647/0xce0 mm/page_io.c:279
       shmem_writepage+0x1248/0x1610 mm/shmem.c:1579
       pageout mm/vmscan.c:696 [inline]
       shrink_folio_list+0x3b68/0x5ca0 mm/vmscan.c:1374
       evict_folios+0x3c92/0x58c0 mm/vmscan.c:4600
       try_to_shrink_lruvec+0x9a6/0xc70 mm/vmscan.c:4799
       shrink_one+0x3b9/0x850 mm/vmscan.c:4844
       shrink_many mm/vmscan.c:4907 [inline]
       lru_gen_shrink_node mm/vmscan.c:4985 [inline]
       shrink_node+0x37c5/0x3e50 mm/vmscan.c:5966
       shrink_zones mm/vmscan.c:6225 [inline]
       do_try_to_free_pages+0x78c/0x1cf0 mm/vmscan.c:6287
       try_to_free_pages+0x47c/0x1050 mm/vmscan.c:6537
       __perform_reclaim mm/page_alloc.c:3929 [inline]
       __alloc_pages_direct_reclaim+0x178/0x3c0 mm/page_alloc.c:3951
       __alloc_pages_slowpath+0x764/0x1020 mm/page_alloc.c:4382
       __alloc_pages_noprof+0x49b/0x710 mm/page_alloc.c:4766
       alloc_pages_mpol_noprof+0x3e1/0x780 mm/mempolicy.c:2269
       alloc_slab_page+0x6a/0x110 mm/slub.c:2423
       allocate_slab+0x1c0/0x2b0 mm/slub.c:2597
       new_slab mm/slub.c:2642 [inline]
       ___slab_alloc+0xc27/0x14a0 mm/slub.c:3830
       __slab_alloc+0x58/0xa0 mm/slub.c:3920
       __slab_alloc_node mm/slub.c:3995 [inline]
       slab_alloc_node mm/slub.c:4156 [inline]
       __do_kmalloc_node mm/slub.c:4297 [inline]
       __kmalloc_noprof+0x2e6/0x4c0 mm/slub.c:4310
       kmalloc_noprof include/linux/slab.h:905 [inline]
       sk_prot_alloc+0xe0/0x210 net/core/sock.c:2168
       sk_alloc+0x38/0x370 net/core/sock.c:2221
       __netlink_create+0x65/0x260 net/netlink/af_netlink.c:629
       netlink_create+0x3ab/0x560 net/netlink/af_netlink.c:687
       __sock_create+0x4c0/0xa30 net/socket.c:1558
       sock_create net/socket.c:1616 [inline]
       __sys_socket_create net/socket.c:1653 [inline]
       __sys_socket+0x150/0x3c0 net/socket.c:1700
       __do_sys_socket net/socket.c:1714 [inline]
       __se_sys_socket net/socket.c:1712 [inline]
       __x64_sys_socket+0x7a/0x90 net/socket.c:1712
       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:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(fs_reclaim);
                               lock(&per_cpu_ptr(pool->acomp_ctx, cpu)->mutex);
                               lock(fs_reclaim);
  lock(&per_cpu_ptr(pool->acomp_ctx, cpu)->mutex);

 *** DEADLOCK ***

1 lock held by syz-executor/5330:
 #0: ffffffff8ea36f00 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:3926 [inline]
 #0: ffffffff8ea36f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim+0xd4/0x3c0 mm/page_alloc.c:3951

stack backtrace:
CPU: 0 UID: 0 PID: 5330 Comm: syz-executor Not tainted 6.13.0-rc7-syzkaller-00149-g9bffa1ad25b8 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
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:2074
 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2206
 check_prev_add kernel/locking/lockdep.c:3161 [inline]
 check_prevs_add kernel/locking/lockdep.c:3280 [inline]
 validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904
 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
 __mutex_lock_common kernel/locking/mutex.c:585 [inline]
 __mutex_lock+0x1ac/0xee0 kernel/locking/mutex.c:735
 acomp_ctx_get_cpu_lock mm/zswap.c:899 [inline]
 zswap_compress mm/zswap.c:931 [inline]
 zswap_store_page mm/zswap.c:1456 [inline]
 zswap_store+0xa3b/0x1c30 mm/zswap.c:1563
 swap_writepage+0x647/0xce0 mm/page_io.c:279
 shmem_writepage+0x1248/0x1610 mm/shmem.c:1579
 pageout mm/vmscan.c:696 [inline]
 shrink_folio_list+0x3b68/0x5ca0 mm/vmscan.c:1374
 evict_folios+0x3c92/0x58c0 mm/vmscan.c:4600
 try_to_shrink_lruvec+0x9a6/0xc70 mm/vmscan.c:4799
 shrink_one+0x3b9/0x850 mm/vmscan.c:4844
 shrink_many mm/vmscan.c:4907 [inline]
 lru_gen_shrink_node mm/vmscan.c:4985 [inline]
 shrink_node+0x37c5/0x3e50 mm/vmscan.c:5966
 shrink_zones mm/vmscan.c:6225 [inline]
 do_try_to_free_pages+0x78c/0x1cf0 mm/vmscan.c:6287
 try_to_free_pages+0x47c/0x1050 mm/vmscan.c:6537
 __perform_reclaim mm/page_alloc.c:3929 [inline]
 __alloc_pages_direct_reclaim+0x178/0x3c0 mm/page_alloc.c:3951
 __alloc_pages_slowpath+0x764/0x1020 mm/page_alloc.c:4382
 __alloc_pages_noprof+0x49b/0x710 mm/page_alloc.c:4766
 alloc_pages_mpol_noprof+0x3e1/0x780 mm/mempolicy.c:2269
 alloc_slab_page+0x6a/0x110 mm/slub.c:2423
 allocate_slab+0x1c0/0x2b0 mm/slub.c:2597
 new_slab mm/slub.c:2642 [inline]
 ___slab_alloc+0xc27/0x14a0 mm/slub.c:3830
 __slab_alloc+0x58/0xa0 mm/slub.c:3920
 __slab_alloc_node mm/slub.c:3995 [inline]
 slab_alloc_node mm/slub.c:4156 [inline]
 __do_kmalloc_node mm/slub.c:4297 [inline]
 __kmalloc_noprof+0x2e6/0x4c0 mm/slub.c:4310
 kmalloc_noprof include/linux/slab.h:905 [inline]
 sk_prot_alloc+0xe0/0x210 net/core/sock.c:2168
 sk_alloc+0x38/0x370 net/core/sock.c:2221
 __netlink_create+0x65/0x260 net/netlink/af_netlink.c:629
 netlink_create+0x3ab/0x560 net/netlink/af_netlink.c:687
 __sock_create+0x4c0/0xa30 net/socket.c:1558
 sock_create net/socket.c:1616 [inline]
 __sys_socket_create net/socket.c:1653 [inline]
 __sys_socket+0x150/0x3c0 net/socket.c:1700
 __do_sys_socket net/socket.c:1714 [inline]
 __se_sys_socket net/socket.c:1712 [inline]
 __x64_sys_socket+0x7a/0x90 net/socket.c:1712
 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: 0033:0x7f18ea987c47
Code: f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 b8 29 00 00 00 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:00007ffe0f7700d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007ffe0f770130 RCX: 00007f18ea987c47
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000010
RBP: 00007f18eaa02473 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f18eaa29d2b
R13: 00007ffe0f770208 R14: 0000000000000009 R15: 0000000000000000
 </TASK>
syz-executor (5330) used greatest stack depth: 17616 bytes left