INFO: task syz.3.294:7271 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.294 state:D stack:27656 pid:7271 tgid:7270 ppid:6328 task_flags:0x400140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:7058
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7115
rwsem_down_read_slowpath+0x64e/0xbf0 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1261 [inline]
__down_read kernel/locking/rwsem.c:1274 [inline]
down_read+0xef/0x480 kernel/locking/rwsem.c:1539
i_mmap_lock_read include/linux/fs.h:568 [inline]
__rmap_walk_file+0x50c/0x620 mm/rmap.c:2892
rmap_walk_file+0x174/0x1f0 mm/rmap.c:2938
rmap_walk+0x7a/0xd0 mm/rmap.c:2949
remove_migration_ptes+0x11d/0x1b0 mm/migrate.c:472
unmap_and_move_huge_page mm/migrate.c:1525 [inline]
migrate_hugetlbs mm/migrate.c:1647 [inline]
migrate_pages+0xa34/0x23b0 mm/migrate.c:2077
do_mbind+0x6f0/0xf30 mm/mempolicy.c:1539
kernel_mbind+0x1e3/0x1f0 mm/mempolicy.c:1682
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9fe9d8cda9
RSP: 002b:00007f9feab1e038 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed
RAX: ffffffffffffffda RBX: 00007f9fe9fa5fa0 RCX: 00007f9fe9d8cda9
RDX: 0000000100000000 RSI: 0000000100000004 RDI: 0000000000000000
RBP: 00007f9fe9e0e2a0 R08: 0000000000000006 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9fe9fa5fa0 R15: 00007ffd2c7692f8
INFO: task syz.3.294:7279 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.294 state:D stack:28448 pid:7279 tgid:7270 ppid:6328 task_flags:0x400040 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:7058
io_schedule+0xbf/0x130 kernel/sched/core.c:7903
folio_wait_bit_common+0x3d6/0x9e0 mm/filemap.c:1317
__folio_lock mm/filemap.c:1675 [inline]
folio_lock include/linux/pagemap.h:1133 [inline]
folio_lock include/linux/pagemap.h:1129 [inline]
__filemap_get_folio+0x774/0xc30 mm/filemap.c:1929
filemap_lock_folio include/linux/pagemap.h:812 [inline]
filemap_lock_hugetlb_folio include/linux/hugetlb.h:809 [inline]
hugetlbfs_zero_partial_page+0xaf/0x590 fs/hugetlbfs/inode.c:655
hugetlbfs_punch_hole fs/hugetlbfs/inode.c:696 [inline]
hugetlbfs_fallocate+0xf81/0x12e0 fs/hugetlbfs/inode.c:742
vfs_fallocate+0x5b4/0x10e0 fs/open.c:342
madvise_remove mm/madvise.c:1049 [inline]
madvise_vma_behavior+0x2ad7/0x2d60 mm/madvise.c:1346
madvise_walk_vmas+0x31f/0x9c0 mm/madvise.c:1669
madvise_do_behavior+0x1e2/0x530 mm/madvise.c:1885
do_madvise+0x176/0x240 mm/madvise.c:1978
__do_sys_madvise mm/madvise.c:1987 [inline]
__se_sys_madvise mm/madvise.c:1985 [inline]
__x64_sys_madvise+0xa9/0x110 mm/madvise.c:1985
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9fe9d8cda9
RSP: 002b:00007f9fe8ffe038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f9fe9fa6080 RCX: 00007f9fe9d8cda9
RDX: 0000000000000009 RSI: 0000000000800034 RDI: 0000000000108000
RBP: 00007f9fe9e0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f9fe9fa6080 R15: 00007ffd2c7692f8
INFO: task syz.3.294:7284 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.294 state:D stack:29112 pid:7284 tgid:7270 ppid:6328 task_flags:0x400040 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:7058
io_schedule+0xbf/0x130 kernel/sched/core.c:7903
migration_entry_wait_on_locked+0x751/0x8c0 mm/filemap.c:1439
migration_entry_wait_huge+0x2f0/0x450 mm/migrate.c:535
hugetlb_fault+0x1a0f/0x2f40 mm/hugetlb.c:6744
handle_mm_fault+0xbfa/0xd10 mm/memory.c:6362
do_user_addr_fault+0x7a6/0x1370 arch/x86/mm/fault.c:1387
handle_page_fault arch/x86/mm/fault.c:1476 [inline]
exc_page_fault+0x5c/0xb0 arch/x86/mm/fault.c:1532
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:do_strncpy_from_user lib/strncpy_from_user.c:41 [inline]
RIP: 0010:strncpy_from_user+0x147/0x2e0 lib/strncpy_from_user.c:130
Code: 00 00 4d 89 74 1d 00 48 83 ed 08 bf 07 00 00 00 48 83 c3 08 48 89 ee e8 27 95 a6 fc 48 83 fd 07 76 22 e8 ac 99 a6 fc 45 31 ff <49> 8b 04 1c 31 ff 44 89 fe 49 89 c6 e8 d8 94 a6 fc 45 85 ff 0f 84
RSP: 0018:ffffc900047a7d10 EFLAGS: 00050246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff85146f96
RDX: ffff88802701da00 RSI: ffffffff85147034 RDI: 0000000000000007
RBP: 0000000000000fe0 R08: 0000000000000007 R09: 0000000000000007
R10: 0000000000000fe0 R11: 0000000000000000 R12: 0000000000000000
R13: ffff888055e14420 R14: 0000000000000fe0 R15: 0000000000000000
getname_flags.part.0+0x8f/0x550 fs/namei.c:157
getname_flags+0x93/0xf0 include/linux/audit.h:322
getname include/linux/fs.h:2919 [inline]
do_sys_openat2+0xb8/0x1d0 fs/open.c:1429
do_sys_open fs/open.c:1450 [inline]
__do_sys_openat fs/open.c:1466 [inline]
__se_sys_openat fs/open.c:1461 [inline]
__x64_sys_openat+0x174/0x210 fs/open.c:1461
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9fe9d8cda9
RSP: 002b:00007f9fe8fdd038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f9fe9fa6160 RCX: 00007f9fe9d8cda9
RDX: 0000000000000062 RSI: 0000000000000000 RDI: ffffffffffffff9c
RBP: 00007f9fe9e0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f9fe9fa6160 R15: 00007ffd2c7692f8
INFO: task syz.2.387:7541 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.387 state:D stack:28216 pid:7541 tgid:7540 ppid:6324 task_flags:0x400140 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:7058
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7115
rwsem_down_read_slowpath+0x64e/0xbf0 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1261 [inline]
__down_read kernel/locking/rwsem.c:1274 [inline]
down_read+0xef/0x480 kernel/locking/rwsem.c:1539
i_mmap_lock_read include/linux/fs.h:568 [inline]
__rmap_walk_file+0x50c/0x620 mm/rmap.c:2892
rmap_walk_file+0x174/0x1f0 mm/rmap.c:2938
rmap_walk+0x7a/0xd0 mm/rmap.c:2949
remove_migration_ptes+0x11d/0x1b0 mm/migrate.c:472
unmap_and_move_huge_page mm/migrate.c:1525 [inline]
migrate_hugetlbs mm/migrate.c:1647 [inline]
migrate_pages+0xa34/0x23b0 mm/migrate.c:2077
do_mbind+0x6f0/0xf30 mm/mempolicy.c:1539
kernel_mbind+0x1e3/0x1f0 mm/mempolicy.c:1682
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f462dd8cda9
RSP: 002b:00007f462eb3c038 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed
RAX: ffffffffffffffda RBX: 00007f462dfa5fa0 RCX: 00007f462dd8cda9
RDX: 0000000100000000 RSI: 0000000100000004 RDI: 0000000000000000
RBP: 00007f462de0e2a0 R08: 0000000000000006 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f462dfa5fa0 R15: 00007ffc04d70e68
INFO: task syz.2.387:7546 blocked for more than 145 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.387 state:D stack:28448 pid:7546 tgid:7540 ppid:6324 task_flags:0x400040 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:7058
io_schedule+0xbf/0x130 kernel/sched/core.c:7903
folio_wait_bit_common+0x3d6/0x9e0 mm/filemap.c:1317
__folio_lock mm/filemap.c:1675 [inline]
folio_lock include/linux/pagemap.h:1133 [inline]
folio_lock include/linux/pagemap.h:1129 [inline]
__filemap_get_folio+0x774/0xc30 mm/filemap.c:1929
filemap_lock_folio include/linux/pagemap.h:812 [inline]
filemap_lock_hugetlb_folio include/linux/hugetlb.h:809 [inline]
hugetlbfs_zero_partial_page+0xaf/0x590 fs/hugetlbfs/inode.c:655
hugetlbfs_punch_hole fs/hugetlbfs/inode.c:696 [inline]
hugetlbfs_fallocate+0xf81/0x12e0 fs/hugetlbfs/inode.c:742
vfs_fallocate+0x5b4/0x10e0 fs/open.c:342
madvise_remove mm/madvise.c:1049 [inline]
madvise_vma_behavior+0x2ad7/0x2d60 mm/madvise.c:1346
madvise_walk_vmas+0x31f/0x9c0 mm/madvise.c:1669
madvise_do_behavior+0x1e2/0x530 mm/madvise.c:1885
do_madvise+0x176/0x240 mm/madvise.c:1978
__do_sys_madvise mm/madvise.c:1987 [inline]
__se_sys_madvise mm/madvise.c:1985 [inline]
__x64_sys_madvise+0xa9/0x110 mm/madvise.c:1985
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f462dd8cda9
RSP: 002b:00007f462eb1b038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f462dfa6080 RCX: 00007f462dd8cda9
RDX: 0000000000000009 RSI: 0000000000800034 RDI: 0000000000108000
RBP: 00007f462de0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f462dfa6080 R15: 00007ffc04d70e68
INFO: task syz.2.387:7549 blocked for more than 145 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.387 state:D stack:29112 pid:7549 tgid:7540 ppid:6324 task_flags:0x400040 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:7058
io_schedule+0xbf/0x130 kernel/sched/core.c:7903
migration_entry_wait_on_locked+0x751/0x8c0 mm/filemap.c:1439
migration_entry_wait_huge+0x2f0/0x450 mm/migrate.c:535
hugetlb_fault+0x1a0f/0x2f40 mm/hugetlb.c:6744
handle_mm_fault+0xbfa/0xd10 mm/memory.c:6362
do_user_addr_fault+0x7a6/0x1370 arch/x86/mm/fault.c:1387
handle_page_fault arch/x86/mm/fault.c:1476 [inline]
exc_page_fault+0x5c/0xb0 arch/x86/mm/fault.c:1532
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:do_strncpy_from_user lib/strncpy_from_user.c:41 [inline]
RIP: 0010:strncpy_from_user+0x147/0x2e0 lib/strncpy_from_user.c:130
Code: 00 00 4d 89 74 1d 00 48 83 ed 08 bf 07 00 00 00 48 83 c3 08 48 89 ee e8 27 95 a6 fc 48 83 fd 07 76 22 e8 ac 99 a6 fc 45 31 ff <49> 8b 04 1c 31 ff 44 89 fe 49 89 c6 e8 d8 94 a6 fc 45 85 ff 0f 84
RSP: 0018:ffffc90004aa7d10 EFLAGS: 00050246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff85146f96
RDX: ffff88802fe53c00 RSI: ffffffff85147034 RDI: 0000000000000007
RBP: 0000000000000fe0 R08: 0000000000000007 R09: 0000000000000007
R10: 0000000000000fe0 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88807b3db320 R14: 0000000000000fe0 R15: 0000000000000000
getname_flags.part.0+0x8f/0x550 fs/namei.c:157
getname_flags+0x93/0xf0 include/linux/audit.h:322
getname include/linux/fs.h:2919 [inline]
do_sys_openat2+0xb8/0x1d0 fs/open.c:1429
do_sys_open fs/open.c:1450 [inline]
__do_sys_openat fs/open.c:1466 [inline]
__se_sys_openat fs/open.c:1461 [inline]
__x64_sys_openat+0x174/0x210 fs/open.c:1461
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f462dd8cda9
RSP: 002b:00007f462cffe038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f462dfa6160 RCX: 00007f462dd8cda9
RDX: 0000000000000062 RSI: 0000000000000000 RDI: ffffffffffffff9c
RBP: 00007f462de0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f462dfa6160 R15: 00007ffc04d70e68
Showing all locks held in the system:
3 locks held by kworker/u8:1/13:
1 lock held by khungtaskd/31:
#0: ffffffff8e5c1420 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e5c1420 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8e5c1420 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x1c0 kernel/locking/lockdep.c:6775
3 locks held by kworker/u8:3/49:
#0: ffff88801b889148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x12a2/0x1b70 kernel/workqueue.c:3211
#1: ffffc90000b97d10 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x929/0x1b70 kernel/workqueue.c:3212
#2: ffffffff90388948 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0x51/0xc0 net/core/link_watch.c:303
3 locks held by kworker/u8:4/59:
#0: ffff888030c51148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x12a2/0x1b70 kernel/workqueue.c:3211
#1: ffffc9000210fd10 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x929/0x1b70 kernel/workqueue.c:3212
#2: ffffffff90388948 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
#2: ffffffff90388948 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_dad_work+0x120/0x14e0 net/ipv6/addrconf.c:4194
4 locks held by kworker/u8:8/2944:
1 lock held by klogd/5224:
#0: ffff8880b843a458 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:636
2 locks held by getty/5623:
#0: ffff88814d7170a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900036c32f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41b/0x14f0 drivers/tty/n_tty.c:2222
1 lock held by syz.3.294/7271:
#0: ffff888076205d68 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: i_mmap_lock_read include/linux/fs.h:568 [inline]
#0: ffff888076205d68 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: __rmap_walk_file+0x50c/0x620 mm/rmap.c:2892
3 locks held by syz.3.294/7279:
#0: ffff888022a8a428 (sb_writers#12){.+.+}-{0:0}, at: madvise_remove mm/madvise.c:1049 [inline]
#0: ffff888022a8a428 (sb_writers#12){.+.+}-{0:0}, at: madvise_vma_behavior+0x2ad7/0x2d60 mm/madvise.c:1346
#1: ffff888076205a98 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:870 [inline]
#1: ffff888076205a98 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: hugetlbfs_punch_hole fs/hugetlbfs/inode.c:684 [inline]
#1: ffff888076205a98 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: hugetlbfs_fallocate+0xce6/0x12e0 fs/hugetlbfs/inode.c:742
#2: ffff888076205d68 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: i_mmap_lock_write include/linux/fs.h:548 [inline]
#2: ffff888076205d68 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: hugetlbfs_punch_hole fs/hugetlbfs/inode.c:692 [inline]
#2: ffff888076205d68 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: hugetlbfs_fallocate+0xd5d/0x12e0 fs/hugetlbfs/inode.c:742
1 lock held by syz.3.294/7284:
#0: ffff888028984d20 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_trylock include/linux/mmap_lock.h:472 [inline]
#0: ffff888028984d20 (&mm->mmap_lock){++++}-{4:4}, at: get_mmap_lock_carefully mm/mmap_lock.c:277 [inline]
#0: ffff888028984d20 (&mm->mmap_lock){++++}-{4:4}, at: lock_mm_and_find_vma+0x35/0x6e0 mm/mmap_lock.c:337
1 lock held by syz.2.387/7541:
#0: ffff88802a600418 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: i_mmap_lock_read include/linux/fs.h:568 [inline]
#0: ffff88802a600418 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: __rmap_walk_file+0x50c/0x620 mm/rmap.c:2892
3 locks held by syz.2.387/7546:
#0: ffff888022a8a428 (sb_writers#12){.+.+}-{0:0}, at: madvise_remove mm/madvise.c:1049 [inline]
#0: ffff888022a8a428 (sb_writers#12){.+.+}-{0:0}, at: madvise_vma_behavior+0x2ad7/0x2d60 mm/madvise.c:1346
#1: ffff88802a600148 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:870 [inline]
#1: ffff88802a600148 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: hugetlbfs_punch_hole fs/hugetlbfs/inode.c:684 [inline]
#1: ffff88802a600148 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: hugetlbfs_fallocate+0xce6/0x12e0 fs/hugetlbfs/inode.c:742
#2: ffff88802a600418 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: i_mmap_lock_write include/linux/fs.h:548 [inline]
#2: ffff88802a600418 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: hugetlbfs_punch_hole fs/hugetlbfs/inode.c:692 [inline]
#2: ffff88802a600418 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: hugetlbfs_fallocate+0xd5d/0x12e0 fs/hugetlbfs/inode.c:742
1 lock held by syz.2.387/7549:
#0: ffff8880298157e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_trylock include/linux/mmap_lock.h:472 [inline]
#0: ffff8880298157e0 (&mm->mmap_lock){++++}-{4:4}, at: get_mmap_lock_carefully mm/mmap_lock.c:277 [inline]
#0: ffff8880298157e0 (&mm->mmap_lock){++++}-{4:4}, at: lock_mm_and_find_vma+0x35/0x6e0 mm/mmap_lock.c:337
1 lock held by syz.5.4379/17139:
#0: ffff888022399d68 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: i_mmap_lock_read include/linux/fs.h:568 [inline]
#0: ffff888022399d68 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: __rmap_walk_file+0x50c/0x620 mm/rmap.c:2892
3 locks held by syz.5.4379/17148:
#0: ffff888022a8a428 (sb_writers#12){.+.+}-{0:0}, at: madvise_remove mm/madvise.c:1049 [inline]
#0: ffff888022a8a428 (sb_writers#12){.+.+}-{0:0}, at: madvise_vma_behavior+0x2ad7/0x2d60 mm/madvise.c:1346
#1: ffff888022399a98 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:870 [inline]
#1: ffff888022399a98 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: hugetlbfs_punch_hole fs/hugetlbfs/inode.c:684 [inline]
#1: ffff888022399a98 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: hugetlbfs_fallocate+0xce6/0x12e0 fs/hugetlbfs/inode.c:742
#2: ffff888022399d68 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: i_mmap_lock_write include/linux/fs.h:548 [inline]
#2: ffff888022399d68 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: hugetlbfs_punch_hole fs/hugetlbfs/inode.c:692 [inline]
#2: ffff888022399d68 (&hugetlbfs_i_mmap_rwsem_key){++++}-{4:4}, at: hugetlbfs_fallocate+0xd5d/0x12e0 fs/hugetlbfs/inode.c:742
1 lock held by syz.5.4379/17150:
#0: ffff88807cf4a220 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_trylock include/linux/mmap_lock.h:472 [inline]
#0: ffff88807cf4a220 (&mm->mmap_lock){++++}-{4:4}, at: get_mmap_lock_carefully mm/mmap_lock.c:277 [inline]
#0: ffff88807cf4a220 (&mm->mmap_lock){++++}-{4:4}, at: lock_mm_and_find_vma+0x35/0x6e0 mm/mmap_lock.c:337
1 lock held by syz-executor/17604:
#0: ffffffff90388948 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
#0: ffffffff90388948 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
#0: ffffffff90388948 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x600/0x2000 net/core/rtnetlink.c:4056
2 locks held by syz-executor/17965:
#0: ffffffff8f71ea20 (&ops->srcu#2){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#0: ffffffff8f71ea20 (&ops->srcu#2){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#0: ffffffff8f71ea20 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x113/0x2c0 net/core/rtnetlink.c:574
#1: ffffffff90388948 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
#1: ffffffff90388948 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
#1: ffffffff90388948 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x600/0x2000 net/core/rtnetlink.c:4056
1 lock held by dhcpcd/18037:
#0: ffff888057520208 (&sb->s_type->i_mutex_key#11){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:870 [inline]
#0: ffff888057520208 (&sb->s_type->i_mutex_key#11){+.+.}-{4:4}, at: __sock_release+0x86/0x270 net/socket.c:648
1 lock held by dhcpcd/18040:
#0: ffff888055685608 (&sb->s_type->i_mutex_key#11){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:870 [inline]
#0: ffff888055685608 (&sb->s_type->i_mutex_key#11){+.+.}-{4:4}, at: __sock_release+0x86/0x270 net/socket.c:648
2 locks held by dhcpcd/18041:
#0: ffff888055681a08 (&sb->s_type->i_mutex_key#11){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:870 [inline]
#0: ffff888055681a08 (&sb->s_type->i_mutex_key#11){+.+.}-{4:4}, at: __sock_release+0x86/0x270 net/socket.c:648
#1: ffffffff8e5cc9b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock+0x1a3/0x3c0 kernel/rcu/tree_exp.h:343
1 lock held by syz.4.4705/18043:
#0: ffffffff8e5cc9b8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock+0x1a3/0x3c0 kernel/rcu/tree_exp.h:343
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:328 [inline]
watchdog+0xf0e/0x1260 kernel/hung_task.c:491
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x56d/0x730 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 17965 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:rcu_preempt_read_exit kernel/rcu/tree_plugin.h:396 [inline]
RIP: 0010:__rcu_read_unlock+0x30/0x550 kernel/rcu/tree_plugin.h:435
Code: 41 55 41 54 55 65 48 8b 2d a5 dd 34 12 53 48 8d bd 44 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 4a 02 00 00 65
RSP: 0018:ffffc90000007598 EFLAGS: 00000a07
RAX: dffffc0000000000 RBX: ffffc90000007f28 RCX: ffffc9000000758c
RDX: 0000000000000000 RSI: ffffffff8de29fdd RDI: ffff888029ad8444
RBP: ffff888029ad8000 R08: ffffffff91465240 R09: 0000000000000000
R10: 0000000000000002 R11: 000000000000a783 R12: ffffc90000007688
R13: ffffc90000007638 R14: ffffc90000007f28 R15: ffffc9000000766c
FS: 0000555565081500(0000) GS:ffff8881246ba000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c25ffff CR3: 00000000344c6000 CR4: 00000000003526f0
Call Trace:
rcu_read_unlock include/linux/rcupdate.h:873 [inline]
class_rcu_destructor include/linux/rcupdate.h:1155 [inline]
unwind_next_frame+0x3fe/0x20a0 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:330 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:356
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4191 [inline]
slab_alloc_node mm/slub.c:4240 [inline]
kmem_cache_alloc_node_noprof+0x1d5/0x3b0 mm/slub.c:4292
kmalloc_reserve+0x18b/0x2c0 net/core/skbuff.c:578
__alloc_skb+0x166/0x380 net/core/skbuff.c:669
alloc_skb include/linux/skbuff.h:1336 [inline]
ndisc_alloc_skb+0xd8/0x530 net/ipv6/ndisc.c:420
ndisc_send_rs+0x36b/0x670 net/ipv6/ndisc.c:706
addrconf_rs_timer+0x40d/0x840 net/ipv6/addrconf.c:4037
call_timer_fn+0x197/0x620 kernel/time/timer.c:1747
expire_timers kernel/time/timer.c:1798 [inline]
__run_timers+0x6ef/0x960 kernel/time/timer.c:2372
__run_timer_base kernel/time/timer.c:2384 [inline]
__run_timer_base kernel/time/timer.c:2376 [inline]
run_timer_base+0x114/0x190 kernel/time/timer.c:2393
run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2403
handle_softirqs+0x216/0x8e0 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0x109/0x170 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2061 [inline]
RIP: 0010:vprintk_emit+0x567/0x6d0 kernel/printk/printk.c:2449
Code: 00 4d 85 ed 0f 85 19 01 00 00 e8 e4 a0 20 00 9c 5d 81 e5 00 02 00 00 31 ff 48 89 ee e8 42 9c 20 00 48 85 ed 0f 85 25 01 00 00 c4 a0 20 00 45 31 c9 41 b8 01 00 00 00 31 c9 48 8d 05 00 00 00
RSP: 0018:ffffc9000c726f30 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000036 RCX: ffffffff819a6a2c
RDX: ffff888029ad8000 RSI: ffffffff819a6a36 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff920018e4de8
R13: 0000000000000200 R14: ffff88801ea9bc00 R15: ffffc9000c726ff8
_printk+0xc7/0x100 kernel/printk/printk.c:2475
br_set_state+0x376/0x880 net/bridge/br_stp.c:57
br_init_port+0xc6/0x250 net/bridge/br_stp_if.c:39
new_nbp net/bridge/br_if.c:442 [inline]
br_add_if+0x5db/0x1b70 net/bridge/br_if.c:599
do_set_master+0x40c/0x730 net/core/rtnetlink.c:2948
do_setlink.constprop.0+0xbd8/0x4380 net/core/rtnetlink.c:3150
rtnl_changelink net/core/rtnetlink.c:3761 [inline]
__rtnl_newlink net/core/rtnetlink.c:3920 [inline]
rtnl_newlink+0x1446/0x2000 net/core/rtnetlink.c:4057
rtnetlink_rcv_msg+0x95b/0xe90 net/core/rtnetlink.c:6946
netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2552
netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
netlink_unicast+0x5a7/0x870 net/netlink/af_netlink.c:1346
netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1896
sock_sendmsg_nosec net/socket.c:714 [inline]
__sock_sendmsg net/socket.c:729 [inline]
__sys_sendto+0x4a3/0x520 net/socket.c:2228
__do_sys_sendto net/socket.c:2235 [inline]
__se_sys_sendto net/socket.c:2231 [inline]
__x64_sys_sendto+0xe0/0x1c0 net/socket.c:2231
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe8ac38ec3c
Code: 2a 5f 02 00 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 70 5f 02 00 48 8b
RSP: 002b:00007fff39d78880 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fe8ad0d4620 RCX: 00007fe8ac38ec3c
RDX: 0000000000000028 RSI: 00007fe8ad0d4670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fff39d788d4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007fe8ad0d4670 R15: 0000000000000000