watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.1:5335] Modules linked in: irq event stamp: 4018439 hardirqs last enabled at (4018438): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4018439): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095 softirqs last enabled at (4017850): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4017853): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 5335 Comm: syz-executor.1 Not tainted 5.10.149 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:193 Code: ff ff b9 ff ff ff ff b8 08 00 00 00 4d 8b 17 49 8b 16 48 0f bd c8 48 63 c9 e9 5e ff ff ff 4c 01 d2 49 89 17 e9 cd fd ff ff 90 <48> 8b 34 24 65 48 8b 14 25 80 6f 02 00 65 8b 05 ac 45 c2 7e a9 00 RSP: 0018:ffff88806cf09910 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff8880451ee000 RCX: ffffffff83b8ddf7 RDX: 0000000000000000 RSI: ffff8880467b8000 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000000 R09: ffff888045140d5f R10: 0000000000000000 R11: 0000000000000001 R12: ffff888045140d00 R13: dffffc0000000000 R14: ffff88806cf09d98 R15: ffff8880482a2780 FS: 00007fa5fd70c700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faa081f5000 CR3: 0000000044f92000 CR4: 0000000000350ee0 Call Trace: ieee80211_rx_h_sta_process net/mac80211/rx.c:1804 [inline] ieee80211_rx_handlers+0x126a/0xa250 net/mac80211/rx.c:3864 ieee80211_invoke_rx_handlers net/mac80211/rx.c:3917 [inline] ieee80211_prepare_and_rx_handle+0x17d4/0x5850 net/mac80211/rx.c:4604 __ieee80211_rx_handle_packet net/mac80211/rx.c:4665 [inline] ieee80211_rx_list+0xdd0/0x2350 net/mac80211/rx.c:4845 ieee80211_rx_napi+0xdd/0x380 net/mac80211/rx.c:4866 ieee80211_rx include/net/mac80211.h:4502 [inline] ieee80211_tasklet_handler+0xd3/0x130 net/mac80211/main.c:235 tasklet_action_common.constprop.0+0x244/0x2f0 kernel/softirq.c:560 __do_softirq+0x1b8/0x86b kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x114/0x1b0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1095 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:call_rcu+0x266/0xa10 kernel/rcu/tree.c:3042 Code: 85 37 06 00 00 8b 85 28 01 00 00 65 ff 0d 22 30 d4 7e a8 02 0f 84 7b 01 00 00 48 83 7c 24 08 00 0f 85 d4 00 00 00 ff 34 24 9d <48> 83 c4 28 5b 5d 41 5c 41 5d 41 5e 41 5f e9 b7 00 f2 02 4c 89 c7 RSP: 0018:ffff8880438e77f0 EFLAGS: 00000246 RAX: 000000000033e2b3 RBX: ffff88800e1a3d30 RCX: 1ffffffff0cf2f5a RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff812e4092 RBP: ffff88806cf3c0f0 R08: 0000000000000001 R09: ffffffff86797667 R10: fffffbfff0cf2ecc R11: 0000000000000001 R12: 0000000000000583 R13: ffff88806cf3c000 R14: ffff88806cf3c0e0 R15: ffff88806cf3c098 kmemleak_free_recursive include/linux/kmemleak.h:49 [inline] slab_free_hook mm/slub.c:1517 [inline] slab_free_freelist_hook+0x13e/0x180 mm/slub.c:1576 slab_free mm/slub.c:3149 [inline] kfree+0xd7/0x390 mm/slub.c:4125 selinux_kernfs_init_security+0x1a5/0x4c0 security/selinux/hooks.c:3497 security_kernfs_init_security+0x4e/0xb0 security/security.c:1456 __kernfs_new_node+0x531/0x850 fs/kernfs/dir.c:674 kernfs_new_node+0x93/0x120 fs/kernfs/dir.c:697 __kernfs_create_file+0x51/0x350 fs/kernfs/file.c:985 cgroup_add_file kernel/cgroup/cgroup.c:3928 [inline] cgroup_addrm_files+0x3c8/0x9b0 kernel/cgroup/cgroup.c:3988 css_populate_dir+0x304/0x460 kernel/cgroup/cgroup.c:1686 cgroup_mkdir+0xa36/0xfc0 kernel/cgroup/cgroup.c:5478 kernfs_iop_mkdir+0x14d/0x1e0 fs/kernfs/dir.c:1134 vfs_mkdir+0x41f/0x660 fs/namei.c:3645 do_mkdirat+0x145/0x2a0 fs/namei.c:3668 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7fa6001d8b19 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa5fd70c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007fa6002ec0e0 RCX: 00007fa6001d8b19 RDX: 0000000000000086 RSI: 0000000020000200 RDI: 000000000000000b RBP: 00007fa600232f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff0137762f R14: 00007fa5fd70c300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5350 Comm: syz-executor.7 Not tainted 5.10.149 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:match_held_lock+0xc/0xd0 kernel/locking/lockdep.c:5013 Code: 84 e8 fb a4 f3 ff e8 6b 5b f5 ff 31 c0 5d e9 eb 21 40 00 66 66 2e 0f 1f 84 00 00 00 00 00 53 48 89 fb 48 83 ec 08 48 39 77 10 <74> 72 66 f7 47 22 f0 ff 74 5e 48 8b 46 08 48 89 f7 48 85 c0 74 46 RSP: 0018:ffff88806ce09a10 EFLAGS: 00000087 RAX: 0000000000000005 RBX: ffff88800d01bbd8 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff84ff7fe0 RDI: ffff88800d01bbd8 RBP: ffffffff84ff7fe0 R08: 0000000000000001 R09: ffffffff8567040f R10: fffffbfff0ace081 R11: 0000000000000001 R12: ffff88800d01b300 R13: ffff88800d01bbb0 R14: 00000000ffffffff R15: ffff88800d01bbd8 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055555661fc58 CR3: 000000000911a000 CR4: 0000000000350ef0 Call Trace: __lock_is_held kernel/locking/lockdep.c:5308 [inline] lock_is_held_type+0x98/0x110 kernel/locking/lockdep.c:5604 lock_is_held include/linux/lockdep.h:282 [inline] rcu_read_lock_sched_held+0x3e/0x80 kernel/rcu/update.c:123 trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x3fd/0x490 kernel/locking/lockdep.c:5536 seqcount_lockdep_reader_access include/linux/seqlock.h:103 [inline] ktime_get_update_offsets_now+0x9b/0x360 kernel/time/timekeeping.c:2298 hrtimer_update_base kernel/time/hrtimer.c:631 [inline] hrtimer_interrupt+0x10e/0x9b0 kernel/time/hrtimer.c:1691 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1084 [inline] __sysvec_apic_timer_interrupt+0xfb/0x400 arch/x86/kernel/apic/apic.c:1101 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:91 [inline] sysvec_apic_timer_interrupt+0x3e/0xa0 arch/x86/kernel/apic/apic.c:1095 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:rcu_read_lock_held_common kernel/rcu/update.c:102 [inline] RIP: 0010:rcu_read_lock_sched_held+0xf/0x80 kernel/rcu/update.c:121 Code: 83 e4 01 44 89 e0 41 5c e9 0e 1b f3 02 45 31 e4 44 89 e0 41 5c e9 01 1b f3 02 90 41 54 41 bc 01 00 00 00 e8 33 fb b2 02 85 c0 <75> 0a 44 89 e0 41 5c e9 e5 1a f3 02 e8 d0 83 00 00 84 c0 74 45 e8 RSP: 0018:ffff88806ce09d60 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 1ffff1100d9c13b0 RCX: ffffffff8126fb9f RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff85670408 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8567040f R10: fffffbfff0ace081 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: ffffffff84ff80a0 R15: 0000000000000000 trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x3fd/0x490 kernel/locking/lockdep.c:5536 rcu_lock_acquire include/linux/rcupdate.h:258 [inline] rcu_read_lock include/linux/rcupdate.h:651 [inline] ieee80211_rx_napi+0xa8/0x380 net/mac80211/rx.c:4865 ieee80211_rx include/net/mac80211.h:4502 [inline] ieee80211_tasklet_handler+0xd3/0x130 net/mac80211/main.c:235 tasklet_action_common.constprop.0+0x244/0x2f0 kernel/softirq.c:560 __do_softirq+0x1b8/0x86b kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x114/0x1b0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1095 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:zap_pte_range mm/memory.c:1236 [inline] RIP: 0010:zap_pmd_range mm/memory.c:1393 [inline] RIP: 0010:zap_pud_range mm/memory.c:1422 [inline] RIP: 0010:zap_p4d_range mm/memory.c:1443 [inline] RIP: 0010:unmap_page_range+0x975/0x1ea0 mm/memory.c:1464 Code: 00 0f 85 4e 12 00 00 48 8b 7c 24 50 48 03 1d e2 52 69 03 4c 8d 2c 2b e8 b9 9d 82 02 48 8b 7c 24 48 e8 1f 1e 04 00 4c 8b 3c 24 44 24 6c 00 00 00 00 49 81 c7 00 10 00 00 eb 31 e8 65 0d e1 ff RSP: 0018:ffff8880458d7768 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff888000000420 RCX: ffffffff81633a68 RDX: ffff88800d01b300 RSI: ffffffff815f1c01 RDI: 0000000000000001 RBP: 000000004671b000 R08: 0000000000000001 R09: 0000000000000003 R10: 0000000000000000 R11: 0000000000000001 R12: 000ffffffffff000 R13: ffff88804671b420 R14: dffffc0000000000 R15: 00007faa07c84000 unmap_single_vma+0x198/0x300 mm/memory.c:1509 unmap_vmas+0x16d/0x300 mm/memory.c:1541 exit_mmap+0x27f/0x4f0 mm/mmap.c:3232 __mmput kernel/fork.c:1089 [inline] mmput+0xca/0x340 kernel/fork.c:1110 exit_mm kernel/exit.c:487 [inline] do_exit+0xb21/0x2740 kernel/exit.c:798 do_group_exit+0x125/0x310 kernel/exit.c:908 get_signal+0x469/0x2210 kernel/signal.c:2748 arch_do_signal+0x8c/0x1c60 arch/x86/kernel/signal.c:805 exit_to_user_mode_loop kernel/entry/common.c:161 [inline] exit_to_user_mode_prepare+0xf7/0x160 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x38/0x230 kernel/entry/common.c:266 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7faa080e5b19 Code: Unable to access opcode bytes at RIP 0x7faa080e5aef. RSP: 002b:00007faa0565b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffe0 RBX: 00007faa081f8f60 RCX: 00007faa080e5b19 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000006 RBP: 00007faa0813ff6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000009bbb R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd239e169f R14: 00007faa0565b300 R15: 0000000000022000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: b9 ff ff ff ff mov $0xffffffff,%ecx 5: b8 08 00 00 00 mov $0x8,%eax a: 4d 8b 17 mov (%r15),%r10 d: 49 8b 16 mov (%r14),%rdx 10: 48 0f bd c8 bsr %rax,%rcx 14: 48 63 c9 movslq %ecx,%rcx 17: e9 5e ff ff ff jmpq 0xffffff7a 1c: 4c 01 d2 add %r10,%rdx 1f: 49 89 17 mov %rdx,(%r15) 22: e9 cd fd ff ff jmpq 0xfffffdf4 27: 90 nop * 28: 48 8b 34 24 mov (%rsp),%rsi <-- trapping instruction 2c: 65 48 8b 14 25 80 6f mov %gs:0x26f80,%rdx 33: 02 00 35: 65 8b 05 ac 45 c2 7e mov %gs:0x7ec245ac(%rip),%eax # 0x7ec245e8 3c: a9 .byte 0xa9