------------[ cut here ]------------ WARNING: CPU: 1 PID: 7976 at net/mac80211/tx.c:4934 __ieee80211_beacon_get+0x1abc/0x2110 net/mac80211/tx.c:5255 Modules linked in: CPU: 1 PID: 7976 Comm: syz.7.764 Not tainted 6.1.127-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4934 [inline] RIP: 0010:__ieee80211_beacon_get+0x1abc/0x2110 net/mac80211/tx.c:5255 Code: ff ff ff e8 a6 7f 50 f7 0f 0b 48 8b 7c 24 20 e8 ea 31 66 fe e9 6f e8 ff ff e8 90 7f 50 f7 0f 0b e9 92 ed ff ff e8 84 7f 50 f7 <0f> 0b e9 26 f1 ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c fc e8 RSP: 0018:ffffc900001e0820 EFLAGS: 00010246 RAX: ffffffff8a3a1d1c RBX: 0000000000000000 RCX: ffff88802ce93b80 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900001e0a30 R08: ffffffff8a3a0e3c R09: ffffffff8a3a0642 R10: 0000000000000003 R11: ffff88802ce93b80 R12: dffffc0000000000 R13: 1ffff9200003c11c R14: ffff888056a8e258 R15: ffffffff8a3a0310 FS: 00007f2fa194e6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c298fb5 CR3: 0000000059426000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_beacon_get_tim+0xb1/0x5d0 net/mac80211/tx.c:5342 ieee80211_beacon_get include/net/mac80211.h:5249 [inline] mac80211_hwsim_beacon_tx+0x1d2/0xaa0 drivers/net/wireless/mac80211_hwsim.c:2086 __iterate_interfaces+0x21e/0x4b0 net/mac80211/util.c:788 ieee80211_iterate_active_interfaces_atomic+0xd4/0x170 net/mac80211/util.c:824 mac80211_hwsim_beacon+0xd0/0x1e0 drivers/net/wireless/mac80211_hwsim.c:2142 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1753 hrtimer_run_softirq+0x196/0x2c0 kernel/time/hrtimer.c:1770 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571 __do_softirq kernel/softirq.c:605 [inline] invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:try_charge_memcg+0x4f6/0x1880 mm/memcontrol.c:2642 Code: 42 0f b6 04 2b 84 c0 0f 85 23 0c 00 00 45 89 26 41 b4 01 e9 cf fe ff ff e8 27 d6 c8 08 41 f7 c7 00 02 00 00 74 d0 fb 45 84 e4 <0f> 85 73 0f 00 00 e9 64 0d 00 00 44 8b 74 24 0c 4c 8d bc 24 b0 01 RSP: 0018:ffffc90003a37080 EFLAGS: 00000202 RAX: c2f701cdfe06da00 RBX: 1ffff92000746e3e RCX: ffffffff816b127a RDX: dffffc0000000000 RSI: ffffffff8b0c0340 RDI: ffffffff8b5e67c0 RBP: ffffc90003a372d0 R08: dffffc0000000000 R09: fffffbfff224a053 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: dffffc0000000000 R14: ffffc90003a371f0 R15: 0000000000000246 try_charge mm/memcontrol.c:2823 [inline] charge_memcg+0x116/0x3f0 mm/memcontrol.c:6920 __mem_cgroup_charge+0x23/0x80 mm/memcontrol.c:6941 mem_cgroup_charge include/linux/memcontrol.h:672 [inline] shmem_add_to_page_cache+0xaa6/0x1e60 mm/shmem.c:708 shmem_get_folio_gfp+0x164e/0x3470 mm/shmem.c:1971 shmem_fault+0x235/0x9c0 mm/shmem.c:2156 __do_fault+0x136/0x4f0 mm/memory.c:4278 do_read_fault mm/memory.c:4629 [inline] do_fault mm/memory.c:4758 [inline] handle_pte_fault mm/memory.c:5029 [inline] __handle_mm_fault mm/memory.c:5171 [inline] handle_mm_fault+0x3410/0x5340 mm/memory.c:5292 faultin_page mm/gup.c:1009 [inline] __get_user_pages+0x4f3/0x1190 mm/gup.c:1233 populate_vma_page_range+0x217/0x2b0 mm/gup.c:1590 __mm_populate+0x275/0x440 mm/gup.c:1704 mm_populate include/linux/mm.h:2801 [inline] vm_mmap_pgoff+0x22b/0x2d0 mm/util.c:525 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f2fa0b8cda9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2fa194e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f2fa0da5fa0 RCX: 00007f2fa0b8cda9 RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 00007f2fa0c0e2a0 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f2fa0da5fa0 R15: 00007ffc66483998 ---------------- Code disassembly (best guess): 0: 42 0f b6 04 2b movzbl (%rbx,%r13,1),%eax 5: 84 c0 test %al,%al 7: 0f 85 23 0c 00 00 jne 0xc30 d: 45 89 26 mov %r12d,(%r14) 10: 41 b4 01 mov $0x1,%r12b 13: e9 cf fe ff ff jmp 0xfffffee7 18: e8 27 d6 c8 08 call 0x8c8d644 1d: 41 f7 c7 00 02 00 00 test $0x200,%r15d 24: 74 d0 je 0xfffffff6 26: fb sti 27: 45 84 e4 test %r12b,%r12b * 2a: 0f 85 73 0f 00 00 jne 0xfa3 <-- trapping instruction 30: e9 64 0d 00 00 jmp 0xd99 35: 44 8b 74 24 0c mov 0xc(%rsp),%r14d 3a: 4c rex.WR 3b: 8d .byte 0x8d 3c: bc .byte 0xbc 3d: 24 b0 and $0xb0,%al 3f: 01 .byte 0x1