rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P19311/1:b..l P19305/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=83533, q=185 ncpus=2)
task:syz-executor.5 state:R running task stack:26224 pid:19305 tgid:19304 ppid:5105 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xee5/0x59b0 kernel/sched/core.c:6688
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7008
irqentry_exit+0x35/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:unwind_next_frame+0x1c70/0x2390 arch/x86/kernel/unwind_orc.c:672
Code: ff ff e8 83 2c 4e 00 8b 54 24 3c 4c 89 e1 48 c7 c7 60 d2 c9 8a 8b 74 24 38 c6 05 c5 52 c9 0d 01 e8 e5 8c 31 00 e9 ca e6 ff ff 5b 2c 4e 00 e8 c6 af c5 ff e9 db f5 ff ff e8 4c 2c 4e 00 48 8d
RSP: 0018:ffffc9000dac7a08 EFLAGS: 00000246
RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffffffff813ac862
RDX: ffff88802a4e3b80 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffffc9000dac7d18 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff81dff464 R12: ffffc9000dac0000
R13: ffffc9000dac8000 R14: ffffc9000dac7d20 R15: ffffc9000dac7cc8
arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
save_stack+0x15e/0x1f0 mm/page_owner.c:128
__reset_page_owner+0x5a/0x190 mm/page_owner.c:149
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1137 [inline]
free_unref_page_prepare+0x4f8/0xa90 mm/page_alloc.c:2383
free_unref_page+0x33/0x3b0 mm/page_alloc.c:2523
qlink_free mm/kasan/quarantine.c:168 [inline]
qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187
kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:294
____kasan_kmalloc mm/kasan/common.c:340 [inline]
__kasan_kmalloc+0x86/0xb0 mm/kasan/common.c:383
kmalloc include/linux/slab.h:600 [inline]
copy_mount_options+0x55/0x190 fs/namespace.c:3542
__do_sys_mount fs/namespace.c:3881 [inline]
__se_sys_mount fs/namespace.c:3863 [inline]
__x64_sys_mount+0x1ad/0x310 fs/namespace.c:3863
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x62/0x6a
RIP: 0033:0x7fb136a7cae9
RSP: 002b:00007fb1377910c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb136b9bf80 RCX: 00007fb136a7cae9
RDX: 00000000200005c0 RSI: 0000000020000580 RDI: 0000000020000540
RBP: 00007fb136ac847a R08: 0000000020000600 R09: 0000000000000000
R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fb136b9bf80 R15: 00007ffc860cfb18
task:syz-executor.5 state:R running task stack:27840 pid:19311 tgid:19304 ppid:5105 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xee5/0x59b0 kernel/sched/core.c:6688
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7008
irqentry_exit+0x35/0x80 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:check_kcov_mode kernel/kcov.c:175 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x2d/0x60 kernel/kcov.c:207
Code: fa 65 48 8b 15 d4 bd 7a 7e 65 8b 05 d5 bd 7a 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74 35 8b 82 fc 15 00 00 85 c0 74 2b <8b> 82 d8 15 00 00 83 f8 02 75 20 48 8b 8a e0 15 00 00 8b 92 dc 15
RSP: 0018:ffffc9000daf7428 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff813ac862
RDX: ffff88801ee40000 RSI: ffffffff813ad285 RDI: 0000000000000005
RBP: ffffc9000daf7f40 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: dffffc0000000000 R12: ffffc9000daf0000
R13: ffffc9000daf8000 R14: ffffc9000daf7f48 R15: ffffc9000daf7e00
unwind_next_frame+0x1c75/0x2390 arch/x86/kernel/unwind_orc.c:672
arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
save_stack+0x15e/0x1f0 mm/page_owner.c:128
__reset_page_owner+0x5a/0x190 mm/page_owner.c:149
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1137 [inline]
free_unref_page_prepare+0x4f8/0xa90 mm/page_alloc.c:2383
free_unref_page+0x33/0x3b0 mm/page_alloc.c:2523
qlink_free mm/kasan/quarantine.c:168 [inline]
qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187
kasan_quarantine_reduce+0x18e/0x1d0 mm/kasan/quarantine.c:294
__kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook mm/slab.h:763 [inline]
slab_alloc_node mm/slub.c:3478 [inline]
kmem_cache_alloc_node+0x180/0x3d0 mm/slub.c:3523
kmalloc_reserve+0x166/0x260 net/core/skbuff.c:560
__alloc_skb+0x12b/0x330 net/core/skbuff.c:651
alloc_skb include/linux/skbuff.h:1286 [inline]
netlink_alloc_large_skb net/netlink/af_netlink.c:1214 [inline]
netlink_sendmsg+0x9c3/0xe40 net/netlink/af_netlink.c:1885
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0xd5/0x180 net/socket.c:745
____sys_sendmsg+0x6ac/0x940 net/socket.c:2584
___sys_sendmsg+0x135/0x1d0 net/socket.c:2638
__sys_sendmsg+0x117/0x1e0 net/socket.c:2667
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x62/0x6a
RIP: 0033:0x7fb136a7cae9
RSP: 002b:00007fb1377700c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fb136b9c050 RCX: 00007fb136a7cae9
RDX: 0000000000000004 RSI: 0000000020000fc0 RDI: 0000000000000006
RBP: 00007fb136ac847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fb136b9c050 R15: 00007ffc860cfb18