watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz.2.262:7902] Modules linked in: irq event stamp: 6215 hardirqs last enabled at (6214): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:85 [inline] hardirqs last enabled at (6214): [] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:95 hardirqs last disabled at (6215): [] __el1_irq arch/arm64/kernel/entry-common.c:557 [inline] hardirqs last disabled at (6215): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:575 softirqs last enabled at (764): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (776): [] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (776): [] sock_devmem_dontneed+0x1d8/0x5fc net/core/sock.c:1086 CPU: 1 UID: 0 PID: 7902 Comm: syz.2.262 Not tainted 6.12.0-rc7-syzkaller-g887407160d72 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 00400005 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __sanitizer_cov_trace_pc+0x0/0x84 kernel/kcov.c:210 lr : xas_store+0x38/0x1470 lib/xarray.c:777 sp : ffff8000a0e27630 x29: ffff8000a0e27680 x28: ffff8000a0e27a30 x27: 0000000000000000 x26: dfff800000000000 x25: ffff0000cea43304 x24: 0000000000000000 x23: dfff800000000000 x22: ffff7000141c4edc x21: ffff8000a0e27700 x20: ffff8000a0e27718 x19: ffff8000a0e27700 x18: ffff8000a0e274a0 x17: 0000000000043408 x16: ffff800080585ea8 x15: 0000000000000003 x14: 1ffff000141c4ee4 x13: 0000000000000000 x12: 0000000000000000 x11: ffff7000141c4ee7 x10: 1ffff000141c4ee6 x9 : dfff800000000000 x8 : ffff8000a0e27738 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000010 x2 : 0000000000000008 x1 : 0000000000000000 x0 : ffff8000a0e27700 Call trace: __sanitizer_cov_trace_pc+0x0/0x84 kernel/audit_tree.c:174 (P) xas_store+0x38/0x1470 lib/xarray.c:777 (L) __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: 7841 Comm: syz-executor 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 : zap_present_folio_ptes mm/memory.c:1497 [inline] pc : zap_present_ptes mm/memory.c:1579 [inline] pc : zap_pte_range mm/memory.c:1621 [inline] pc : zap_pmd_range mm/memory.c:1739 [inline] pc : zap_pud_range mm/memory.c:1768 [inline] pc : zap_p4d_range mm/memory.c:1789 [inline] pc : unmap_page_range+0x1528/0x2e3c mm/memory.c:1810 lr : zap_present_folio_ptes mm/memory.c:1497 [inline] lr : zap_present_ptes mm/memory.c:1579 [inline] lr : zap_pte_range mm/memory.c:1621 [inline] lr : zap_pmd_range mm/memory.c:1739 [inline] lr : zap_pud_range mm/memory.c:1768 [inline] lr : zap_p4d_range mm/memory.c:1789 [inline] lr : unmap_page_range+0x1520/0x2e3c mm/memory.c:1810 sp : ffff8000a4eb6fc0 x29: ffff8000a4eb7360 x28: ffff0000c2c64000 x27: 1fffe0001eafa5eb x26: ffff8000a4eb7600 x25: fffffdffc36a7d80 x24: dfff800000000000 x23: fffffdffc36a7d98 x22: 006800011a9f6fc3 x21: 0000000000000001 x20: 1fffffbff86d4fb3 x19: ffff0000f57d2f58 x18: 1fffe000192995fc x17: ffff80008f80d000 x16: ffff8000830ce3b0 x15: 0000000000000001 x14: 1fffe000180e29f6 x13: 0000000000000000 x12: 0000000000000000 x11: ffff6000180e29f7 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 0000000000000080 x7 : ffff800080b7cb08 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800080b7d308 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0008000000000000 Call trace: zap_present_folio_ptes mm/memory.c:1497 [inline] (P) zap_present_ptes mm/memory.c:1579 [inline] (P) zap_pte_range mm/memory.c:1621 [inline] (P) zap_pmd_range mm/memory.c:1739 [inline] (P) zap_pud_range mm/memory.c:1768 [inline] (P) zap_p4d_range mm/memory.c:1789 [inline] (P) unmap_page_range+0x1528/0x2e3c mm/memory.c:1810 (P) zap_present_folio_ptes mm/memory.c:1497 [inline] (L) zap_present_ptes mm/memory.c:1579 [inline] (L) zap_pte_range mm/memory.c:1621 [inline] (L) zap_pmd_range mm/memory.c:1739 [inline] (L) zap_pud_range mm/memory.c:1768 [inline] (L) zap_p4d_range mm/memory.c:1789 [inline] (L) unmap_page_range+0x1520/0x2e3c mm/memory.c:1810 (L) unmap_single_vma mm/memory.c:1856 [inline] unmap_vmas+0x378/0x598 mm/memory.c:1900 exit_mmap+0x1dc/0xc00 mm/mmap.c:1923 __mmput+0xec/0x338 kernel/fork.c:1348 mmput+0x70/0xac kernel/fork.c:1370 exit_mm+0x148/0x210 kernel/exit.c:571 do_exit+0x470/0x1ad0 kernel/exit.c:926 do_group_exit+0x194/0x22c kernel/exit.c:1088 get_signal+0x1410/0x152c kernel/signal.c:2918 do_signal+0x23c/0x391c arch/arm64/kernel/signal.c:1645 do_notify_resume+0x74/0x1f4 arch/arm64/kernel/entry-common.c:148 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600