------------[ 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)