Extracting prog: 3m39.897561698s Minimizing prog: 58m11.460812573s Simplifying prog options: 12m25.390430331s Extracting C: 5m15.040165765s 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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-syz_clone detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000070000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x0, @void, @value}, 0x80) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000000)={&(0x7f00000000c0)='percpu_alloc_percpu\x00', r0}, 0x10) syz_clone(0x160480, 0x0, 0x0, 0x0, 0x0, 0x0) program did not crash single: failed to extract reproducer single: executing 1 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-syz_clone detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000070000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x0, @void, @value}, 0x80) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000000)={&(0x7f00000000c0)='percpu_alloc_percpu\x00', r0}, 0x10) syz_clone(0x160480, 0x0, 0x0, 0x0, 0x0, 0x0) program crashed: lost connection to test machine single: successfully extracted reproducer found reproducer with 3 syscalls minimizing guilty program testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000070000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x0, @void, @value}, 0x80) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000000)={&(0x7f00000000c0)='percpu_alloc_percpu\x00', r0}, 0x10) program crashed: WARNING in call_timer_fn testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD detailed listing: executing program 0: bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000070000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x0, @void, @value}, 0x80) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_RAW_TRACEPOINT_OPEN detailed listing: executing program 0: bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000000)={&(0x7f00000000c0)='percpu_alloc_percpu\x00'}, 0x10) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, 0x0, 0x0) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000000)={&(0x7f00000000c0)='percpu_alloc_percpu\x00', r0}, 0x10) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, 0x0, &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x0, @void, @value}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000000)={&(0x7f00000000c0)='percpu_alloc_percpu\x00', r0}, 0x10) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x0, @void, @value}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000000)={&(0x7f00000000c0)='percpu_alloc_percpu\x00', r0}, 0x10) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000070000000000000000000000850000006d00000095"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x0, @void, @value}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000000)={&(0x7f00000000c0)='percpu_alloc_percpu\x00', r0}, 0x10) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN detailed listing: executing program 0: bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000070000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x0, @void, @value}, 0x80) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, 0x0, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000070000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x0, @void, @value}, 0x80) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000000)={0x0, r0}, 0x18) program did not crash extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN program crashed: no output from test machine a never seen crash title: no output from test machine, ignore simplifying guilty program options testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000070000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x0, @void, @value}, 0x80) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000000)={&(0x7f00000000c0)='percpu_alloc_percpu\x00', r0}, 0x10) program did not crash testing program (duration=6m0s, {Threaded:true 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}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000070000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x0, @void, @value}, 0x80) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000000)={&(0x7f00000000c0)='percpu_alloc_percpu\x00', r0}, 0x10) program did not crash reproducing took 1h19m31.788983837s repro crashed as (corrupted=false): ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5965 at kernel/workqueue.c:2257 __queue_work+0xcd3/0xf50 kernel/workqueue.c:2256 Modules linked in: CPU: 0 UID: 0 PID: 5965 Comm: syz-executor Not tainted 6.14.0-rc3-syzkaller-g9aa8fe29f624 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__queue_work+0xcd3/0xf50 kernel/workqueue.c:2256 Code: ff e8 e1 af 38 00 90 0f 0b 90 e9 b2 fe ff ff e8 d3 af 38 00 eb 13 e8 cc af 38 00 eb 0c e8 c5 af 38 00 eb 05 e8 be af 38 00 90 <0f> 0b 90 48 83 c4 60 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc RSP: 0018:ffffc90000007b08 EFLAGS: 00010046 RAX: ffffffff818915cd RBX: 0000000000000100 RCX: ffff88802910bc00 RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000 RBP: 0000000000010000 R08: ffffffff818909f8 R09: 1ffffffff207a0ae R10: dffffc0000000000 R11: ffffffff81891e00 R12: ffff88807ebd6000 R13: ffff88807ebd61c0 R14: dffffc0000000000 R15: 0000000000000008 FS: 000055555dd25500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb70a5edb48 CR3: 000000004a26c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> call_timer_fn+0x187/0x650 kernel/time/timer.c:1789 expire_timers kernel/time/timer.c:1835 [inline] __run_timers kernel/time/timer.c:2414 [inline] __run_timer_base+0x695/0x8e0 kernel/time/timer.c:2426 run_timer_base kernel/time/timer.c:2435 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2445 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:unwind_next_frame+0x83b/0x22d0 arch/x86/kernel/unwind_orc.c:521 Code: 80 3c 20 00 74 0d 48 89 df e8 51 5d bc 00 48 8b 54 24 10 48 8b 03 48 89 04 24 48 8d 5a 01 48 89 d0 48 c1 e8 03 42 0f b6 04 20 <84> c0 0f 85 90 16 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 RSP: 0018:ffffc90003c17870 EFLAGS: 00000a06 RAX: 0000000000000000 RBX: ffffffff90c61531 RCX: ffffffff904f6614 RDX: ffffffff90c61530 RSI: ffffffff90c61530 RDI: ffffffff816d1530 RBP: ffffc90003c179f0 R08: 0000000000000007 R09: 0000000000000000 R10: ffffc90003c179f0 R11: fffff52000782f40 R12: dffffc0000000000 R13: ffffc90003c179a0 R14: ffffc90003c179d8 R15: ffffffff90c61534 __unwind_start+0x59a/0x740 arch/x86/kernel/unwind_orc.c:760 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xe5/0x150 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47 kasan_record_aux_stack+0xaa/0xc0 mm/kasan/generic.c:548 __call_rcu_common kernel/rcu/tree.c:3065 [inline] call_rcu+0x168/0xac0 kernel/rcu/tree.c:3172 slab_free_hook mm/slub.c:2317 [inline] slab_free mm/slub.c:4609 [inline] kmem_cache_free+0x30e/0x410 mm/slub.c:4711 __do_sys_close fs/open.c:1580 [inline] __se_sys_close fs/open.c:1565 [inline] __x64_sys_close+0x7f/0x110 fs/open.c:1565 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: 0033:0x7f653ff8bdca Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 43 91 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 a3 91 02 00 8b 44 24 RSP: 002b:00007ffe4bf615a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f653ff8bdca RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007ffe4bf615fc R08: 00007ffe4bf60f1c R09: 00007ffe4bf61307 R10: 00007ffe4bf60f70 R11: 0000000000000293 R12: 00000000000013af R13: 00000000000927c0 R14: 0000000000050b2a R15: 00007ffe4bf61650 </TASK> ---------------- Code disassembly (best guess): 0: 80 3c 20 00 cmpb $0x0,(%rax,%riz,1) 4: 74 0d je 0x13 6: 48 89 df mov %rbx,%rdi 9: e8 51 5d bc 00 call 0xbc5d5f e: 48 8b 54 24 10 mov 0x10(%rsp),%rdx 13: 48 8b 03 mov (%rbx),%rax 16: 48 89 04 24 mov %rax,(%rsp) 1a: 48 8d 5a 01 lea 0x1(%rdx),%rbx 1e: 48 89 d0 mov %rdx,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax * 2a: 84 c0 test %al,%al <-- trapping instruction 2c: 0f 85 90 16 00 00 jne 0x16c2 32: 48 89 d8 mov %rbx,%rax 35: 48 c1 e8 03 shr $0x3,%rax 39: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax 3e: 84 c0 test %al,%al final repro crashed as (corrupted=false): ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5965 at kernel/workqueue.c:2257 __queue_work+0xcd3/0xf50 kernel/workqueue.c:2256 Modules linked in: CPU: 0 UID: 0 PID: 5965 Comm: syz-executor Not tainted 6.14.0-rc3-syzkaller-g9aa8fe29f624 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__queue_work+0xcd3/0xf50 kernel/workqueue.c:2256 Code: ff e8 e1 af 38 00 90 0f 0b 90 e9 b2 fe ff ff e8 d3 af 38 00 eb 13 e8 cc af 38 00 eb 0c e8 c5 af 38 00 eb 05 e8 be af 38 00 90 <0f> 0b 90 48 83 c4 60 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc RSP: 0018:ffffc90000007b08 EFLAGS: 00010046 RAX: ffffffff818915cd RBX: 0000000000000100 RCX: ffff88802910bc00 RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000 RBP: 0000000000010000 R08: ffffffff818909f8 R09: 1ffffffff207a0ae R10: dffffc0000000000 R11: ffffffff81891e00 R12: ffff88807ebd6000 R13: ffff88807ebd61c0 R14: dffffc0000000000 R15: 0000000000000008 FS: 000055555dd25500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb70a5edb48 CR3: 000000004a26c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> call_timer_fn+0x187/0x650 kernel/time/timer.c:1789 expire_timers kernel/time/timer.c:1835 [inline] __run_timers kernel/time/timer.c:2414 [inline] __run_timer_base+0x695/0x8e0 kernel/time/timer.c:2426 run_timer_base kernel/time/timer.c:2435 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2445 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:unwind_next_frame+0x83b/0x22d0 arch/x86/kernel/unwind_orc.c:521 Code: 80 3c 20 00 74 0d 48 89 df e8 51 5d bc 00 48 8b 54 24 10 48 8b 03 48 89 04 24 48 8d 5a 01 48 89 d0 48 c1 e8 03 42 0f b6 04 20 <84> c0 0f 85 90 16 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 RSP: 0018:ffffc90003c17870 EFLAGS: 00000a06 RAX: 0000000000000000 RBX: ffffffff90c61531 RCX: ffffffff904f6614 RDX: ffffffff90c61530 RSI: ffffffff90c61530 RDI: ffffffff816d1530 RBP: ffffc90003c179f0 R08: 0000000000000007 R09: 0000000000000000 R10: ffffc90003c179f0 R11: fffff52000782f40 R12: dffffc0000000000 R13: ffffc90003c179a0 R14: ffffc90003c179d8 R15: ffffffff90c61534 __unwind_start+0x59a/0x740 arch/x86/kernel/unwind_orc.c:760 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xe5/0x150 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47 kasan_record_aux_stack+0xaa/0xc0 mm/kasan/generic.c:548 __call_rcu_common kernel/rcu/tree.c:3065 [inline] call_rcu+0x168/0xac0 kernel/rcu/tree.c:3172 slab_free_hook mm/slub.c:2317 [inline] slab_free mm/slub.c:4609 [inline] kmem_cache_free+0x30e/0x410 mm/slub.c:4711 __do_sys_close fs/open.c:1580 [inline] __se_sys_close fs/open.c:1565 [inline] __x64_sys_close+0x7f/0x110 fs/open.c:1565 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: 0033:0x7f653ff8bdca Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 43 91 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 a3 91 02 00 8b 44 24 RSP: 002b:00007ffe4bf615a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f653ff8bdca RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007ffe4bf615fc R08: 00007ffe4bf60f1c R09: 00007ffe4bf61307 R10: 00007ffe4bf60f70 R11: 0000000000000293 R12: 00000000000013af R13: 00000000000927c0 R14: 0000000000050b2a R15: 00007ffe4bf61650 </TASK> ---------------- Code disassembly (best guess): 0: 80 3c 20 00 cmpb $0x0,(%rax,%riz,1) 4: 74 0d je 0x13 6: 48 89 df mov %rbx,%rdi 9: e8 51 5d bc 00 call 0xbc5d5f e: 48 8b 54 24 10 mov 0x10(%rsp),%rdx 13: 48 8b 03 mov (%rbx),%rax 16: 48 89 04 24 mov %rax,(%rsp) 1a: 48 8d 5a 01 lea 0x1(%rdx),%rbx 1e: 48 89 d0 mov %rdx,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax * 2a: 84 c0 test %al,%al <-- trapping instruction 2c: 0f 85 90 16 00 00 jne 0x16c2 32: 48 89 d8 mov %rbx,%rax 35: 48 c1 e8 03 shr $0x3,%rax 39: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax 3e: 84 c0 test %al,%al