Extracting prog: 3m21.942274278s
Minimizing prog: 28m30.432298941s
Simplifying prog options: 0s
Extracting C: 1m9.609491915s
Simplifying C: 8m34.955872264s


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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$net_dm(&(0x7f0000000080), r0)
write(0xffffffffffffffff, &(0x7f0000000014)="0500010001000000", 0x8)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000000)={0x1c, r1, 0x1, 0x0, 0x0, {0x2}}, 0x1c}}, 0x0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000040)={0x14, r1, 0x1}, 0x14}}, 0x0)
socket$packet(0x11, 0x3, 0x300)

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 1m40s
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$net_dm(&(0x7f0000000080), r0)
write(0xffffffffffffffff, &(0x7f0000000014)="0500010001000000", 0x8)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000000)={0x1c, r1, 0x1, 0x0, 0x0, {0x2}}, 0x1c}}, 0x0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000040)={0x14, r1, 0x1}, 0x14}}, 0x0)
socket$packet(0x11, 0x3, 0x300)

program crashed: BUG: using smp_processor_id() in preemptible code in sk_skb_reason_drop
single: successfully extracted reproducer
found reproducer with 6 syscalls
minimizing guilty program
testing program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$net_dm(&(0x7f0000000080), r0)
write(0xffffffffffffffff, &(0x7f0000000014)="0500010001000000", 0x8)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000000)={0x1c, r1, 0x1, 0x0, 0x0, {0x2}}, 0x1c}}, 0x0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000040)={0x14, r1, 0x1}, 0x14}}, 0x0)

program did not crash
testing program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$net_dm(&(0x7f0000000080), r0)
write(0xffffffffffffffff, &(0x7f0000000014)="0500010001000000", 0x8)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000000)={0x1c, r1, 0x1, 0x0, 0x0, {0x2}}, 0x1c}}, 0x0)
socket$packet(0x11, 0x3, 0x300)

program did not crash
testing program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$net_dm(&(0x7f0000000080), r0)
write(0xffffffffffffffff, &(0x7f0000000014)="0500010001000000", 0x8)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000040)={0x14, r1, 0x1}, 0x14}}, 0x0)
socket$packet(0x11, 0x3, 0x300)

program did not crash
testing program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$net_dm(&(0x7f0000000080), r0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000000)={0x1c, r1, 0x1, 0x0, 0x0, {0x2}}, 0x1c}}, 0x0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000040)={0x14, r1, 0x1}, 0x14}}, 0x0)
socket$packet(0x11, 0x3, 0x300)

program did not crash
testing program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
write(0xffffffffffffffff, &(0x7f0000000014)="0500010001000000", 0x8)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000000)={0x1c, 0x0, 0x1, 0x0, 0x0, {0x2}}, 0x1c}}, 0x0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000040)={0x14, 0x0, 0x1}, 0x14}}, 0x0)
socket$packet(0x11, 0x3, 0x300)

program did not crash
testing program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_genetlink_get_family_id$net_dm(&(0x7f0000000080), 0xffffffffffffffff)
write(0xffffffffffffffff, &(0x7f0000000014)="0500010001000000", 0x8)
sendmsg$NET_DM_CMD_START(0xffffffffffffffff, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000000)={0x1c, r0, 0x1, 0x0, 0x0, {0x2}}, 0x1c}}, 0x0)
sendmsg$NET_DM_CMD_START(0xffffffffffffffff, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000040)={0x14, r0, 0x1}, 0x14}}, 0x0)
socket$packet(0x11, 0x3, 0x300)

program did not crash
testing program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$net_dm(0x0, r0)
write(0xffffffffffffffff, &(0x7f0000000014)="0500010001000000", 0x8)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000000)={0x1c, r1, 0x1, 0x0, 0x0, {0x2}}, 0x1c}}, 0x0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000040)={0x14, r1, 0x1}, 0x14}}, 0x0)
socket$packet(0x11, 0x3, 0x300)

program did not crash
testing program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$net_dm(&(0x7f0000000080), r0)
write(0xffffffffffffffff, 0x0, 0x0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000000)={0x1c, r1, 0x1, 0x0, 0x0, {0x2}}, 0x1c}}, 0x0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000040)={0x14, r1, 0x1}, 0x14}}, 0x0)
socket$packet(0x11, 0x3, 0x300)

program did not crash
testing program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$net_dm(&(0x7f0000000080), r0)
write(0xffffffffffffffff, &(0x7f0000000014), 0x0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000000)={0x1c, r1, 0x1, 0x0, 0x0, {0x2}}, 0x1c}}, 0x0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000040)={0x14, r1, 0x1}, 0x14}}, 0x0)
socket$packet(0x11, 0x3, 0x300)

program did not crash
testing program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$net_dm(&(0x7f0000000080), r0)
write(0xffffffffffffffff, &(0x7f0000000014)="0500010001000000", 0x8)
sendmsg$NET_DM_CMD_START(r0, 0x0, 0x0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000040)={0x14, r1, 0x1}, 0x14}}, 0x0)
socket$packet(0x11, 0x3, 0x300)

program did not crash
testing program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$net_dm(&(0x7f0000000080), r0)
write(0xffffffffffffffff, &(0x7f0000000014)="0500010001000000", 0x8)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000300)={0x0, 0x0, 0x0}, 0x0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000040)={0x14, r1, 0x1}, 0x14}}, 0x0)
socket$packet(0x11, 0x3, 0x300)

program did not crash
testing program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$net_dm(&(0x7f0000000080), r0)
write(0xffffffffffffffff, &(0x7f0000000014)="0500010001000000", 0x8)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000100)={0x0}}, 0x0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000040)={0x14, r1, 0x1}, 0x14}}, 0x0)
socket$packet(0x11, 0x3, 0x300)

program did not crash
testing program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$net_dm(&(0x7f0000000080), r0)
write(0xffffffffffffffff, &(0x7f0000000014)="0500010001000000", 0x8)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000000)={0x1c, r1, 0x1, 0x0, 0x0, {0x2}}, 0x1c}}, 0x0)
sendmsg$NET_DM_CMD_START(r0, 0x0, 0x0)
socket$packet(0x11, 0x3, 0x300)

program did not crash
testing program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$net_dm(&(0x7f0000000080), r0)
write(0xffffffffffffffff, &(0x7f0000000014)="0500010001000000", 0x8)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000000)={0x1c, r1, 0x1, 0x0, 0x0, {0x2}}, 0x1c}}, 0x0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000340)={0x0, 0x0, 0x0}, 0x0)
socket$packet(0x11, 0x3, 0x300)

program did not crash
testing program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$net_dm(&(0x7f0000000080), r0)
write(0xffffffffffffffff, &(0x7f0000000014)="0500010001000000", 0x8)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000000)={0x1c, r1, 0x1, 0x0, 0x0, {0x2}}, 0x1c}}, 0x0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={0x0}}, 0x0)
socket$packet(0x11, 0x3, 0x300)

program did not crash
extracting C reproducer
testing compiled C program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
program crashed: BUG: using smp_processor_id() in preemptible code in sk_skb_reason_drop
simplifying C reproducer
testing compiled C program (duration=1m33.685787868s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
program crashed: BUG: using smp_processor_id() in preemptible code in sk_skb_reason_drop
testing compiled C program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
program crashed: BUG: using smp_processor_id() in preemptible code in sk_skb_reason_drop
testing compiled C program (duration=1m33.685787868s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
program crashed: BUG: using smp_processor_id() in preemptible code in sk_skb_reason_drop
testing compiled C program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
program crashed: BUG: using smp_processor_id() in preemptible code in sk_skb_reason_drop
testing compiled C program (duration=1m33.685787868s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
program crashed: BUG: using smp_processor_id() in preemptible code in sk_skb_reason_drop
testing compiled C program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
program crashed: BUG: using smp_processor_id() in preemptible code in sk_skb_reason_drop
testing compiled C program (duration=1m33.685787868s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
program crashed: BUG: using smp_processor_id() in preemptible code in sk_skb_reason_drop
testing program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$net_dm(&(0x7f0000000080), r0)
write(0xffffffffffffffff, &(0x7f0000000014)="0500010001000000", 0x8)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000000)={0x1c, r1, 0x1, 0x0, 0x0, {0x2}}, 0x1c}}, 0x0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000040)={0x14, r1, 0x1}, 0x14}}, 0x0)
socket$packet(0x11, 0x3, 0x300)

program crashed: BUG: using smp_processor_id() in preemptible code in sk_skb_reason_drop
validation run: crashed=true
testing program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$net_dm(&(0x7f0000000080), r0)
write(0xffffffffffffffff, &(0x7f0000000014)="0500010001000000", 0x8)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000000)={0x1c, r1, 0x1, 0x0, 0x0, {0x2}}, 0x1c}}, 0x0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000040)={0x14, r1, 0x1}, 0x14}}, 0x0)
socket$packet(0x11, 0x3, 0x300)

program crashed: BUG: using smp_processor_id() in preemptible code in sk_skb_reason_drop
validation run: crashed=true
testing program (duration=1m33.685787868s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$net_dm-write-sendmsg$NET_DM_CMD_START-sendmsg$NET_DM_CMD_START-socket$packet
detailed listing:
executing program 0:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$net_dm(&(0x7f0000000080), r0)
write(0xffffffffffffffff, &(0x7f0000000014)="0500010001000000", 0x8)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000000)={0x1c, r1, 0x1, 0x0, 0x0, {0x2}}, 0x1c}}, 0x0)
sendmsg$NET_DM_CMD_START(r0, &(0x7f0000000340)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000040)={0x14, r1, 0x1}, 0x14}}, 0x0)
socket$packet(0x11, 0x3, 0x300)

program crashed: BUG: using smp_processor_id() in preemptible code in sk_skb_reason_drop
validation run: crashed=true
reproducing took 46m18.963312954s
repro crashed as (corrupted=false):
BUG: using smp_processor_id() in preemptible [00000000] code: syz.0.26/5878
caller is net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
CPU: 0 UID: 0 PID: 5878 Comm: syz.0.26 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/08/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 check_preemption_disabled+0xcd/0xd0 lib/smp_processor_id.c:47
 net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
 __do_trace_kfree_skb include/trace/events/skb.h:24 [inline]
 trace_kfree_skb+0x1d1/0x210 include/trace/events/skb.h:24
 __sk_skb_reason_drop net/core/skbuff.c:1231 [inline]
 sk_skb_reason_drop+0xdd/0x110 net/core/skbuff.c:1249
 kfree_skb_reason include/linux/skbuff.h:1323 [inline]
 __skb_queue_purge_reason include/linux/skbuff.h:3470 [inline]
 skb_queue_purge_reason+0x2e5/0x3a0 net/core/skbuff.c:4040
 skb_queue_purge include/linux/skbuff.h:3483 [inline]
 packet_release+0xb81/0xd00 net/packet/af_packet.c:3213
 __sock_release+0xa0/0x1f0 net/socket.c:735
 sock_close+0x1c/0x30 net/socket.c:1526
 __fput+0x418/0xa50 fs/file_table.c:512
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:336 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f12e7f9e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff50609cb8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fff50609da0 RCX: 00007f12e7f9e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000016959 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b33820000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f12e8225fac R14: 00007f12e8225fa8 R15: 00007f12e8225fa0
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: syz.0.26/5878
caller is net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
CPU: 0 UID: 0 PID: 5878 Comm: syz.0.26 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/08/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 check_preemption_disabled+0xcd/0xd0 lib/smp_processor_id.c:47
 net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
 __do_trace_kfree_skb include/trace/events/skb.h:24 [inline]
 trace_kfree_skb+0x1d1/0x210 include/trace/events/skb.h:24
 __sk_skb_reason_drop net/core/skbuff.c:1231 [inline]
 sk_skb_reason_drop+0xdd/0x110 net/core/skbuff.c:1249
 kfree_skb_reason include/linux/skbuff.h:1323 [inline]
 __skb_queue_purge_reason include/linux/skbuff.h:3470 [inline]
 skb_queue_purge_reason+0x2e5/0x3a0 net/core/skbuff.c:4040
 skb_queue_purge include/linux/skbuff.h:3483 [inline]
 packet_release+0xb81/0xd00 net/packet/af_packet.c:3213
 __sock_release+0xa0/0x1f0 net/socket.c:735
 sock_close+0x1c/0x30 net/socket.c:1526
 __fput+0x418/0xa50 fs/file_table.c:512
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:336 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f12e7f9e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff50609cb8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fff50609da0 RCX: 00007f12e7f9e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000016959 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b33820000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f12e8225fac R14: 00007f12e8225fa8 R15: 00007f12e8225fa0
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: syz.0.26/5878
caller is net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
CPU: 0 UID: 0 PID: 5878 Comm: syz.0.26 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/08/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 check_preemption_disabled+0xcd/0xd0 lib/smp_processor_id.c:47
 net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
 __do_trace_kfree_skb include/trace/events/skb.h:24 [inline]
 trace_kfree_skb+0x1d1/0x210 include/trace/events/skb.h:24
 __sk_skb_reason_drop net/core/skbuff.c:1231 [inline]
 sk_skb_reason_drop+0xdd/0x110 net/core/skbuff.c:1249
 kfree_skb_reason include/linux/skbuff.h:1323 [inline]
 __skb_queue_purge_reason include/linux/skbuff.h:3470 [inline]
 skb_queue_purge_reason+0x2e5/0x3a0 net/core/skbuff.c:4040
 skb_queue_purge include/linux/skbuff.h:3483 [inline]
 packet_release+0xb81/0xd00 net/packet/af_packet.c:3213
 __sock_release+0xa0/0x1f0 net/socket.c:735
 sock_close+0x1c/0x30 net/socket.c:1526
 __fput+0x418/0xa50 fs/file_table.c:512
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:336 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f12e7f9e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff50609cb8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fff50609da0 RCX: 00007f12e7f9e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000016959 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b33820000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f12e8225fac R14: 00007f12e8225fa8 R15: 00007f12e8225fa0
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: syz.0.26/5878
caller is net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
CPU: 0 UID: 0 PID: 5878 Comm: syz.0.26 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/08/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 check_preemption_disabled+0xcd/0xd0 lib/smp_processor_id.c:47
 net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
 __do_trace_kfree_skb include/trace/events/skb.h:24 [inline]
 trace_kfree_skb+0x1d1/0x210 include/trace/events/skb.h:24
 __sk_skb_reason_drop net/core/skbuff.c:1231 [inline]
 sk_skb_reason_drop+0xdd/0x110 net/core/skbuff.c:1249
 kfree_skb_reason include/linux/skbuff.h:1323 [inline]
 __skb_queue_purge_reason include/linux/skbuff.h:3470 [inline]
 skb_queue_purge_reason+0x2e5/0x3a0 net/core/skbuff.c:4040
 skb_queue_purge include/linux/skbuff.h:3483 [inline]
 packet_release+0xb81/0xd00 net/packet/af_packet.c:3213
 __sock_release+0xa0/0x1f0 net/socket.c:735
 sock_close+0x1c/0x30 net/socket.c:1526
 __fput+0x418/0xa50 fs/file_table.c:512
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:336 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f12e7f9e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff50609cb8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fff50609da0 RCX: 00007f12e7f9e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000016959 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b33820000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f12e8225fac R14: 00007f12e8225fa8 R15: 00007f12e8225fa0
 </TASK>

final repro crashed as (corrupted=false):
BUG: using smp_processor_id() in preemptible [00000000] code: syz.0.26/5878
caller is net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
CPU: 0 UID: 0 PID: 5878 Comm: syz.0.26 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/08/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 check_preemption_disabled+0xcd/0xd0 lib/smp_processor_id.c:47
 net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
 __do_trace_kfree_skb include/trace/events/skb.h:24 [inline]
 trace_kfree_skb+0x1d1/0x210 include/trace/events/skb.h:24
 __sk_skb_reason_drop net/core/skbuff.c:1231 [inline]
 sk_skb_reason_drop+0xdd/0x110 net/core/skbuff.c:1249
 kfree_skb_reason include/linux/skbuff.h:1323 [inline]
 __skb_queue_purge_reason include/linux/skbuff.h:3470 [inline]
 skb_queue_purge_reason+0x2e5/0x3a0 net/core/skbuff.c:4040
 skb_queue_purge include/linux/skbuff.h:3483 [inline]
 packet_release+0xb81/0xd00 net/packet/af_packet.c:3213
 __sock_release+0xa0/0x1f0 net/socket.c:735
 sock_close+0x1c/0x30 net/socket.c:1526
 __fput+0x418/0xa50 fs/file_table.c:512
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:336 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f12e7f9e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff50609cb8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fff50609da0 RCX: 00007f12e7f9e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000016959 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b33820000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f12e8225fac R14: 00007f12e8225fa8 R15: 00007f12e8225fa0
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: syz.0.26/5878
caller is net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
CPU: 0 UID: 0 PID: 5878 Comm: syz.0.26 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/08/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 check_preemption_disabled+0xcd/0xd0 lib/smp_processor_id.c:47
 net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
 __do_trace_kfree_skb include/trace/events/skb.h:24 [inline]
 trace_kfree_skb+0x1d1/0x210 include/trace/events/skb.h:24
 __sk_skb_reason_drop net/core/skbuff.c:1231 [inline]
 sk_skb_reason_drop+0xdd/0x110 net/core/skbuff.c:1249
 kfree_skb_reason include/linux/skbuff.h:1323 [inline]
 __skb_queue_purge_reason include/linux/skbuff.h:3470 [inline]
 skb_queue_purge_reason+0x2e5/0x3a0 net/core/skbuff.c:4040
 skb_queue_purge include/linux/skbuff.h:3483 [inline]
 packet_release+0xb81/0xd00 net/packet/af_packet.c:3213
 __sock_release+0xa0/0x1f0 net/socket.c:735
 sock_close+0x1c/0x30 net/socket.c:1526
 __fput+0x418/0xa50 fs/file_table.c:512
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:336 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f12e7f9e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff50609cb8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fff50609da0 RCX: 00007f12e7f9e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000016959 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b33820000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f12e8225fac R14: 00007f12e8225fa8 R15: 00007f12e8225fa0
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: syz.0.26/5878
caller is net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
CPU: 0 UID: 0 PID: 5878 Comm: syz.0.26 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/08/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 check_preemption_disabled+0xcd/0xd0 lib/smp_processor_id.c:47
 net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
 __do_trace_kfree_skb include/trace/events/skb.h:24 [inline]
 trace_kfree_skb+0x1d1/0x210 include/trace/events/skb.h:24
 __sk_skb_reason_drop net/core/skbuff.c:1231 [inline]
 sk_skb_reason_drop+0xdd/0x110 net/core/skbuff.c:1249
 kfree_skb_reason include/linux/skbuff.h:1323 [inline]
 __skb_queue_purge_reason include/linux/skbuff.h:3470 [inline]
 skb_queue_purge_reason+0x2e5/0x3a0 net/core/skbuff.c:4040
 skb_queue_purge include/linux/skbuff.h:3483 [inline]
 packet_release+0xb81/0xd00 net/packet/af_packet.c:3213
 __sock_release+0xa0/0x1f0 net/socket.c:735
 sock_close+0x1c/0x30 net/socket.c:1526
 __fput+0x418/0xa50 fs/file_table.c:512
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:336 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f12e7f9e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff50609cb8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fff50609da0 RCX: 00007f12e7f9e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000016959 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b33820000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f12e8225fac R14: 00007f12e8225fa8 R15: 00007f12e8225fa0
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: syz.0.26/5878
caller is net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
CPU: 0 UID: 0 PID: 5878 Comm: syz.0.26 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/08/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 check_preemption_disabled+0xcd/0xd0 lib/smp_processor_id.c:47
 net_dm_packet_trace_kfree_skb_hit+0xdf/0x360 net/core/drop_monitor.c:519
 __do_trace_kfree_skb include/trace/events/skb.h:24 [inline]
 trace_kfree_skb+0x1d1/0x210 include/trace/events/skb.h:24
 __sk_skb_reason_drop net/core/skbuff.c:1231 [inline]
 sk_skb_reason_drop+0xdd/0x110 net/core/skbuff.c:1249
 kfree_skb_reason include/linux/skbuff.h:1323 [inline]
 __skb_queue_purge_reason include/linux/skbuff.h:3470 [inline]
 skb_queue_purge_reason+0x2e5/0x3a0 net/core/skbuff.c:4040
 skb_queue_purge include/linux/skbuff.h:3483 [inline]
 packet_release+0xb81/0xd00 net/packet/af_packet.c:3213
 __sock_release+0xa0/0x1f0 net/socket.c:735
 sock_close+0x1c/0x30 net/socket.c:1526
 __fput+0x418/0xa50 fs/file_table.c:512
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x204/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:336 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f12e7f9e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff50609cb8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fff50609da0 RCX: 00007f12e7f9e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000016959 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b33820000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f12e8225fac R14: 00007f12e8225fa8 R15: 00007f12e8225fa0
 </TASK>