------------[ cut here ]------------ !local->started WARNING: net/mac80211/rx.c:5462 at ieee80211_rx_list+0x2918/0x3710 net/mac80211/rx.c:5462, CPU#0: syz.6.6102/25245 Modules linked in: CPU: 0 UID: 0 PID: 25245 Comm: syz.6.6102 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:ieee80211_rx_list+0x2918/0x3710 net/mac80211/rx.c:5462 Code: 90 e9 70 df ff ff e8 77 22 90 f6 e9 66 df ff ff e8 6d 22 90 f6 e9 5c df ff ff e8 63 22 90 f6 e9 52 df ff ff e8 59 22 90 f6 90 <0f> 0b 90 e9 44 df ff ff e8 4b 22 90 f6 48 c7 44 24 68 00 00 00 00 RSP: 0000:ffffc90000007b20 EFLAGS: 00010246 RAX: ffffffff8b36d0c7 RBX: ffff88803df81665 RCX: ffff888028c98000 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000005 RBP: ffffc90000007d90 R08: ffffffff8b36dfa3 R09: ffffffff8eb5d6e0 R10: 0000000000000002 R11: 0000000000000100 R12: ffff88802b8548c0 R13: dffffc0000000000 R14: ffff88803df83148 R15: ffffffff8b36dfa3 FS: 00007efdfb3ee6c0(0000) GS:ffff888124de1000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffffffffffe70 CR3: 0000000023730000 CR4: 00000000003526f0 Call Trace: ieee80211_rx_napi+0x1b1/0x3e0 net/mac80211/rx.c:5602 ieee80211_rx include/net/mac80211.h:5271 [inline] ieee80211_handle_queued_frames+0xe8/0x1e0 net/mac80211/main.c:452 tasklet_action_common+0x2da/0x4b0 kernel/softirq.c:942 handle_softirqs+0x22a/0x870 kernel/softirq.c:626 __do_softirq kernel/softirq.c:660 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:739 irq_exit_rcu+0x9/0x30 kernel/softirq.c:756 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:resched_offsets_ok kernel/sched/core.c:8891 [inline] RIP: 0010:__might_resched+0xfb/0x4d0 kernel/sched/core.c:8906 Code: ff ff 7f 65 4c 8b 35 6c 38 cd 11 4d 8d a6 c4 04 00 00 4d 89 e7 49 c1 ef 03 41 0f b6 04 2f 84 c0 0f 85 9b 02 00 00 41 8b 04 24 e0 08 44 01 e8 39 d8 75 48 9c 58 a9 00 02 00 00 74 3f 4d 8d 6e RSP: 0000:ffffc90003dfe928 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000046 RDX: 0000000000000000 RSI: ffffffff8e4d2edc RDI: ffffffff8c4a8700 RBP: dffffc0000000000 R08: ffffea00015a52f7 R09: 1ffffd40002b4a5e R10: dffffc0000000000 R11: fffff940002b4a5f R12: ffff888028c984c4 R13: 0000000000000000 R14: ffff888028c98000 R15: 1ffff11005193098 generic_perform_write+0x652/0x8f0 mm/filemap.c:4353 shmem_file_write_iter+0xf8/0x120 mm/shmem.c:3466 __kernel_write_iter+0x41e/0x880 fs/read_write.c:621 dump_emit_page fs/coredump.c:1299 [inline] dump_user_range+0xc19/0x12c0 fs/coredump.c:1373 elf_core_dump+0x34c2/0x3ad0 fs/binfmt_elf.c:2110 coredump_write+0x1216/0x1910 fs/coredump.c:1050 do_coredump fs/coredump.c:1127 [inline] vfs_coredump+0x36a9/0x4280 fs/coredump.c:1201 get_signal+0x1107/0x1330 kernel/signal.c:3021 arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline] exit_to_user_mode_loop kernel/entry/common.c:98 [inline] __exit_to_user_mode_prepare include/linux/irq-entry-common.h:238 [inline] irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:283 [inline] irqentry_exit_to_user_mode include/linux/irq-entry-common.h:352 [inline] irqentry_exit+0x188/0x700 kernel/entry/common.c:219 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618 RIP: 0033:0x7efdfd19c7a1 Code: 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 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f RSP: 002b:fffffffffffffe70 EFLAGS: 00010217 RAX: 0000000000000000 RBX: 00007efdfd415fa0 RCX: 00007efdfd19c799 RDX: 0000000000000000 RSI: fffffffffffffe70 RDI: 0000000000008000 RBP: 00007efdfd232c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 00007efdfd416038 R14: 00007efdfd415fa0 R15: 00007ffc88153908 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 7f 65 jg 0x67 2: 4c 8b 35 6c 38 cd 11 mov 0x11cd386c(%rip),%r14 # 0x11cd3875 9: 4d 8d a6 c4 04 00 00 lea 0x4c4(%r14),%r12 10: 4d 89 e7 mov %r12,%r15 13: 49 c1 ef 03 shr $0x3,%r15 17: 41 0f b6 04 2f movzbl (%r15,%rbp,1),%eax 1c: 84 c0 test %al,%al 1e: 0f 85 9b 02 00 00 jne 0x2bf 24: 41 8b 04 24 mov (%r12),%eax * 28: c1 e0 08 shl $0x8,%eax <-- trapping instruction 2b: 44 01 e8 add %r13d,%eax 2e: 39 d8 cmp %ebx,%eax 30: 75 48 jne 0x7a 32: 9c pushf 33: 58 pop %rax 34: a9 00 02 00 00 test $0x200,%eax 39: 74 3f je 0x7a 3b: 4d rex.WRB 3c: 8d .byte 0x8d 3d: 6e outsb %ds:(%rsi),(%dx)