watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz.2.425:8702] Modules linked in: irq event stamp: 103443 hardirqs last enabled at (103442): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:85 [inline] hardirqs last enabled at (103442): [] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:95 hardirqs last disabled at (103443): [] __el1_irq arch/arm64/kernel/entry-common.c:557 [inline] hardirqs last disabled at (103443): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:575 softirqs last enabled at (98870): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (98878): [] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (98878): [] sock_devmem_dontneed+0x1d8/0x5fc net/core/sock.c:1086 CPU: 1 UID: 0 PID: 8702 Comm: syz.2.425 Not tainted 6.12.0-rc6-syzkaller-g8936d33c1f69 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_kcov_mode kernel/kcov.c:185 [inline] pc : __sanitizer_cov_trace_pc+0x4c/0x84 kernel/kcov.c:217 lr : __xa_erase+0x84/0x1e0 lib/xarray.c:1509 sp : ffff8000a32976d0 x29: ffff8000a3297780 x28: ffff8000a3297a30 x27: 0000000000000000 x26: ffff0000d3e1fb00 x25: ffff0000d3e1fb04 x24: ffff8000a32976e0 x23: dfff800000000000 x22: ffff700014652edc x21: ffff0000eeb02d80 x20: 00000000d662d605 x19: ffff8000a3297700 x18: ffff8000a32974a0 x17: 00000000000150f5 x16: ffff80008058ace0 x15: 0000000000000003 x14: 1ffff00014652ee4 x13: 0000000000000000 x12: 0000000000000000 x11: ffff80008b47f788 x10: 0000000000ff0100 x9 : 0000000000000201 x8 : ffff0000c44e3c80 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000010 x2 : 0000000000000008 x1 : 00000000d662d605 x0 : ffff0000eeb02d80 Call trace: check_kcov_mode kernel/kcov.c:183 [inline] (P) __sanitizer_cov_trace_pc+0x4c/0x84 kernel/kcov.c:217 (P) __xa_erase+0x84/0x1e0 lib/xarray.c:1509 (L) sock_devmem_dontneed+0x2a0/0x5fc net/core/sock.c:1089 sk_setsockopt+0x7b4/0x3150 net/core/sock.c:1280 sock_setsockopt+0x68/0x80 net/core/sock.c:1633 do_sock_setsockopt+0x238/0x4e0 net/socket.c:2330 __sys_setsockopt+0x128/0x1a8 net/socket.c:2357 __do_sys_setsockopt net/socket.c:2366 [inline] __se_sys_setsockopt net/socket.c:2363 [inline] __arm64_sys_setsockopt+0xb8/0xd4 net/socket.c:2363 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 7741 Comm: kworker/u8:17 Not tainted 6.12.0-rc6-syzkaller-g8936d33c1f69 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events_unbound cfg80211_wiphy_work pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : stack_trace_consume_entry+0x118/0x1cc kernel/stacktrace.c:95 lr : arch_kunwind_consume_entry arch/arm64/kernel/stacktrace.c:392 [inline] lr : do_kunwind arch/arm64/kernel/stacktrace.c:307 [inline] lr : kunwind_stack_walk arch/arm64/kernel/stacktrace.c:380 [inline] lr : arch_stack_walk+0x304/0x48c arch/arm64/kernel/stacktrace.c:404 sp : ffff8000a2616780 x29: ffff8000a2616890 x28: dfff800000000000 x27: ffff7000144c2d94 x26: ffff0000c0001ddc x25: 0000000000212008 x24: dfff800000000000 x23: ffff7000144c2d18 x22: ffff8000a2616980 x21: ffff8000a26167f8 x20: ffff80008046429c x19: ffff8000a26168e0 x18: ffff0000e95c48b8 x17: ffff80008f80d000 x16: ffff80008b4b15b8 x15: 0000000000000001 x14: 1ffff00012ea6945 x13: ffff8000a2618000 x12: ffff8000a26179e0 x11: ffff8000a2617a60 x10: 0000000000000000 x9 : 1ffff000144c2d1d x8 : 0000000000000040 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000000 x3 : 0000000000000000 x2 : ffff0000dd148000 x1 : ffff80008ace48a8 x0 : 0000000000000001 Call trace: stack_trace_consume_entry+0x118/0x1cc kernel/stacktrace.c:95 (P) arch_kunwind_consume_entry arch/arm64/kernel/stacktrace.c:392 [inline] (L) do_kunwind arch/arm64/kernel/stacktrace.c:307 [inline] (L) kunwind_stack_walk arch/arm64/kernel/stacktrace.c:380 [inline] (L) arch_stack_walk+0x304/0x48c arch/arm64/kernel/stacktrace.c:404 (L) stack_trace_save+0xfc/0x1a0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x40/0x78 mm/kasan/common.c:68 kasan_save_free_info+0x54/0x6c mm/kasan/generic.c:579 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x64/0x8c mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:2342 [inline] slab_free mm/slub.c:4579 [inline] kfree+0x184/0x47c mm/slub.c:4727 ieee80211_inform_bss+0x924/0xd84 net/mac80211/scan.c:160 rdev_inform_bss net/wireless/rdev-ops.h:418 [inline] cfg80211_inform_single_bss_data+0xb88/0x1c60 net/wireless/scan.c:2333 cfg80211_inform_bss_data+0x2e8/0x4a58 net/wireless/scan.c:3188 cfg80211_inform_bss_frame_data+0x300/0x700 net/wireless/scan.c:3283 ieee80211_bss_info_update+0x700/0x9d0 net/mac80211/scan.c:226 ieee80211_rx_bss_info net/mac80211/ibss.c:1100 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1579 [inline] ieee80211_ibss_rx_queued_mgmt+0x14e0/0x2698 net/mac80211/ibss.c:1606 ieee80211_iface_process_skb net/mac80211/iface.c:1603 [inline] ieee80211_iface_work+0x6f8/0xc88 net/mac80211/iface.c:1657 cfg80211_wiphy_work+0x2b8/0x4fc net/wireless/core.c:440 process_one_work+0x7bc/0x1600 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3391 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862