watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz.4.117:7091]
Modules linked in:
irq event stamp: 6747
hardirqs last  enabled at (6746): [<ffff80008b4b13e4>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:85 [inline]
hardirqs last  enabled at (6746): [<ffff80008b4b13e4>] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:95
hardirqs last disabled at (6747): [<ffff80008b4aee5c>] __el1_irq arch/arm64/kernel/entry-common.c:557 [inline]
hardirqs last disabled at (6747): [<ffff80008b4aee5c>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:575
softirqs last  enabled at (84): [<ffff80008002f3d8>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (92): [<ffff80008959a754>] spin_lock_bh include/linux/spinlock.h:356 [inline]
softirqs last disabled at (92): [<ffff80008959a754>] sock_devmem_dontneed+0x1d8/0x5fc net/core/sock.c:1086
CPU: 0 UID: 0 PID: 7091 Comm: syz.4.117 Not tainted 6.12.0-rc7-syzkaller-g887407160d72 #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 : arch_local_irq_restore+0x8/0xc arch/arm64/include/asm/irqflags.h:197
lr : lock_is_held_type+0x150/0x1a8 kernel/locking/lockdep.c:5899
sp : ffff8000a31274f0
x29: ffff8000a31274f0 x28: 1ffff00014624ee0 x27: 0000000000000000
x26: ffff0000d45adac0 x25: ffff80008f75f4c0 x24: ffff80008f8bd960
x23: 0000000000000000 x22: ffff0000d45ae540 x21: ffff0000d62b2018
x20: 0000000000000001 x19: 0000000000000000 x18: ffff8000a31274a0
x17: 000000000002ba76 x16: ffff8000803541a4 x15: 0000000000000003
x14: 1ffff00014624ee4 x13: 0000000000000000 x12: 0000000000000000
x11: ffff700014624ee7 x10: 0000000000000003 x9 : 0000000000000000
x8 : 00000000000000c0 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000010
x2 : 0000000000000008 x1 : ffff80008b625160 x0 : 0000000000000000
Call trace:
 __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P)
 arch_local_irq_restore+0x8/0xc arch/arm64/include/asm/irqflags.h:195 (P)
 lock_is_held_type+0x150/0x1a8 kernel/locking/lockdep.c:5899 (L)
 lock_is_held include/linux/lockdep.h:249 [inline]
 xa_head include/linux/xarray.h:1204 [inline]
 xas_start+0x1bc/0x6c4 lib/xarray.c:190
 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.12.0-rc7-syzkaller-g887407160d72 #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 : ffff800097977d10
x29: ffff800097977d10 x28: dfff800000000000 x27: 1ffff00012f2efb0
x26: ffff80008f80d000 x25: 0000000000000000 x24: 0000000000000002
x23: 1ffff00011f01ab8 x22: ffff80008f80d5c0 x21: 0000000000000000
x20: ffff0000c1b80000 x19: ffff8000802fdd1c x18: 1fffe000366cb476
x17: ffff80008f80d000 x16: ffff8000802fd5e0 x15: 0000000000000001
x14: 1fffe000366cd1d0 x13: 0000000000000000 x12: 0000000000000003
x11: 0000000000000001 x10: 0000000000000003 x9 : 0000000000000000
x8 : 0000000000053ffb x7 : ffff8000804ab884 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008b4b3790
x2 : 0000000000000000 x1 : ffff80008b624020 x0 : ffff800123efb000
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
 secondary_start_kernel+0x1bc/0x1e4 arch/arm64/kernel/smp.c:279
 __secondary_switched+0xc0/0xc4 arch/arm64/kernel/head.S:417