watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz.0.70:6875] Modules linked in: irq event stamp: 8033 hardirqs last enabled at (8032): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:85 [inline] hardirqs last enabled at (8032): [] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:95 hardirqs last disabled at (8033): [] __el1_irq arch/arm64/kernel/entry-common.c:557 [inline] hardirqs last disabled at (8033): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:575 softirqs last enabled at (3154): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (3162): [] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (3162): [] sock_devmem_dontneed+0x1d8/0x5fc net/core/sock.c:1086 CPU: 1 UID: 0 PID: 6875 Comm: syz.0.70 Not tainted 6.12.0-rc6-syzkaller-g8936d33c1f69 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : preempt_count arch/arm64/include/asm/preempt.h:13 [inline] pc : check_kcov_mode kernel/kcov.c:183 [inline] pc : write_comp_data kernel/kcov.c:246 [inline] pc : __sanitizer_cov_trace_const_cmp4+0x14/0xa0 kernel/kcov.c:314 lr : xa_head include/linux/xarray.h:1204 [inline] lr : xas_start+0x1ac/0x6c4 lib/xarray.c:190 sp : ffff8000a21b7530 x29: ffff8000a21b7540 x28: 1ffff00014436ee0 x27: 0000000000000000 x26: dfff800000000000 x25: 1ffff00014436ee3 x24: dfff800000000000 x23: ffff0000d1937100 x22: 0000000000000001 x21: ffff8000a21b7718 x20: ffff8000a21b7700 x19: 0000000000000000 x18: ffff8000a21b74a0 x17: 0000000000029fbc x16: ffff80008058b118 x15: 0000000000000003 x14: 1ffff00014436ee4 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000040000 x10: 0000000000ff0100 x9 : 0000000000000201 x8 : ffff0000cc071e40 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000010 x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000 Call trace: preempt_count arch/arm64/include/asm/preempt.h:13 [inline] (P) check_kcov_mode kernel/kcov.c:183 [inline] (P) write_comp_data kernel/kcov.c:246 [inline] (P) __sanitizer_cov_trace_const_cmp4+0x14/0xa0 kernel/kcov.c:314 (P) xa_head include/linux/xarray.h:1204 [inline] (L) xas_start+0x1ac/0x6c4 lib/xarray.c:190 (L) xas_load+0x3c/0x50c lib/xarray.c:238 xas_store+0x94/0x1470 lib/xarray.c:790 __xa_erase+0x11c/0x1e0 lib/xarray.c:1511 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: 0 Comm: swapper/0 Not tainted 6.12.0-rc6-syzkaller-g8936d33c1f69 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:50 lr : default_idle_call+0xf8/0x128 kernel/sched/idle.c:124 sp : ffff80008f787cf0 x29: ffff80008f787cf0 x28: dfff800000000000 x27: 1ffff00011ef0fac x26: ffff80008f80d000 x25: 0000000000000000 x24: 0000000000000001 x23: 1ffff00011f01ab8 x22: ffff80008f80d5c0 x21: 0000000000000000 x20: ffff80008f835ac0 x19: ffff8000803041dc x18: 1fffe000366c6c76 x17: ffff80008f80d000 x16: ffff800080303aa0 x15: 0000000000000001 x14: 1fffe000366c89d0 x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000001 x10: 0000000000000003 x9 : 0000000000000000 x8 : 0000000000056e9b x7 : ffff8000804b070c x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008b4b364c x2 : 0000000000000000 x1 : ffff80008b626000 x0 : ffff800123ed7000 Call trace: __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P) arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:48 (P) default_idle_call+0xf8/0x128 kernel/sched/idle.c:124 (L) cpuidle_idle_call kernel/sched/idle.c:185 [inline] do_idle+0x1f0/0x4e4 kernel/sched/idle.c:326 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:424 rest_init+0x2dc/0x2f4 init/main.c:747 start_kernel+0x3f4/0x4f4 init/main.c:1105 __primary_switched+0x8c/0x94 arch/arm64/kernel/head.S:246