INFO: task syz-executor.5:3603 blocked for more than 143 seconds.
Not tainted 5.15.107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:20504 pid: 3603 ppid: 1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
rwsem_down_write_slowpath+0xebb/0x15c0 kernel/locking/rwsem.c:1157
__down_write_common kernel/locking/rwsem.c:1284 [inline]
__down_write kernel/locking/rwsem.c:1293 [inline]
down_write+0x164/0x170 kernel/locking/rwsem.c:1542
inode_lock include/linux/fs.h:787 [inline]
vfs_unlink+0xe0/0x5f0 fs/namei.c:4198
do_unlinkat+0x49d/0x940 fs/namei.c:4277
__do_sys_unlink fs/namei.c:4325 [inline]
__se_sys_unlink fs/namei.c:4323 [inline]
__x64_sys_unlink+0x45/0x50 fs/namei.c:4323
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f52b1102ad7
RSP: 002b:00007ffd619a4128 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f52b1102ad7
RDX: 00007ffd619a4160 RSI: 00007ffd619a4160 RDI: 00007ffd619a41f0
RBP: 00007ffd619a41f0 R08: 0000000000000001 R09: 00007ffd619a3fc0
R10: 0000555556a2a8e3 R11: 0000000000000206 R12: 00007f52b115dcdc
R13: 00007ffd619a52b0 R14: 0000555556a2a810 R15: 00007ffd619a52f0
INFO: task syz-executor.3:20457 blocked for more than 143 seconds.
Not tainted 5.15.107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:21696 pid:20457 ppid: 31160 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
wb_wait_for_completion+0x164/0x290 fs/fs-writeback.c:191
__writeback_inodes_sb_nr+0x2ce/0x370 fs/fs-writeback.c:2659
try_to_writeback_inodes_sb+0x94/0xb0 fs/fs-writeback.c:2707
ext4_nonda_switch fs/ext4/inode.c:2943 [inline]
ext4_da_write_begin+0x228/0xb60 fs/ext4/inode.c:2970
generic_perform_write+0x2bf/0x5b0 mm/filemap.c:3776
ext4_buffered_write_iter+0x22e/0x380 fs/ext4/file.c:269
ext4_file_write_iter+0x87c/0x1990
__kernel_write+0x5b1/0xa60 fs/read_write.c:539
__dump_emit+0x264/0x3a0 fs/coredump.c:875
dump_user_range+0x91/0x320 fs/coredump.c:949
elf_core_dump+0x3c7d/0x4570 fs/binfmt_elf.c:2285
do_coredump+0x1852/0x31e0 fs/coredump.c:826
get_signal+0xc06/0x14e0 kernel/signal.c:2875
arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:865
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:172
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:314
exc_general_protection+0x358/0x4f0 arch/x86/kernel/traps.c:562
asm_exc_general_protection+0x22/0x30 arch/x86/include/asm/idtentry.h:562
RIP: 0033:0x7fd5e096d171
RSP: 002b:0000000020000140 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fd5e0a8d120 RCX: 00007fd5e096d169
RDX: 0000000020000380 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 00007fd5e09c8ca1 R08: 0000000020000400 R09: 0000000020000400
R10: 00000000200003c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe6501977f R14: 00007fd5dee9d300 R15: 0000000000022000
INFO: task syz-executor.5:20458 blocked for more than 144 seconds.
Not tainted 5.15.107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:21632 pid:20458 ppid: 3603 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
wb_wait_for_completion+0x164/0x290 fs/fs-writeback.c:191
__writeback_inodes_sb_nr+0x2ce/0x370 fs/fs-writeback.c:2659
try_to_writeback_inodes_sb+0x94/0xb0 fs/fs-writeback.c:2707
ext4_nonda_switch fs/ext4/inode.c:2943 [inline]
ext4_da_write_begin+0x228/0xb60 fs/ext4/inode.c:2970
generic_perform_write+0x2bf/0x5b0 mm/filemap.c:3776
ext4_buffered_write_iter+0x22e/0x380 fs/ext4/file.c:269
ext4_file_write_iter+0x87c/0x1990
__kernel_write+0x5b1/0xa60 fs/read_write.c:539
__dump_emit+0x264/0x3a0 fs/coredump.c:875
dump_user_range+0x91/0x320 fs/coredump.c:949
elf_core_dump+0x3c7d/0x4570 fs/binfmt_elf.c:2285
do_coredump+0x1852/0x31e0 fs/coredump.c:826
get_signal+0xc06/0x14e0 kernel/signal.c:2875
arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:865
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:172
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:314
exc_general_protection+0x358/0x4f0 arch/x86/kernel/traps.c:562
asm_exc_general_protection+0x22/0x30 arch/x86/include/asm/idtentry.h:562
RIP: 0033:0x7f52b1103171
RSP: 002b:0000000020000140 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f52b1223120 RCX: 00007f52b1103169
RDX: 0000000020000380 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 00007f52b115eca1 R08: 0000000020000400 R09: 0000000020000400
R10: 00000000200003c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd619a4fcf R14: 00007f52af633300 R15: 0000000000022000
INFO: task syz-executor.5:20496 blocked for more than 145 seconds.
Not tainted 5.15.107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:22648 pid:20496 ppid: 3603 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
wb_wait_for_completion+0x164/0x290 fs/fs-writeback.c:191
__writeback_inodes_sb_nr+0x2ce/0x370 fs/fs-writeback.c:2659
try_to_writeback_inodes_sb+0x94/0xb0 fs/fs-writeback.c:2707
ext4_nonda_switch fs/ext4/inode.c:2943 [inline]
ext4_da_write_begin+0x228/0xb60 fs/ext4/inode.c:2970
generic_perform_write+0x2bf/0x5b0 mm/filemap.c:3776
ext4_buffered_write_iter+0x22e/0x380 fs/ext4/file.c:269
ext4_file_write_iter+0x87c/0x1990
__kernel_write+0x5b1/0xa60 fs/read_write.c:539
__dump_emit+0x264/0x3a0 fs/coredump.c:875
dump_user_range+0x91/0x320 fs/coredump.c:949
elf_core_dump+0x3c7d/0x4570 fs/binfmt_elf.c:2285
do_coredump+0x1852/0x31e0 fs/coredump.c:826
get_signal+0xc06/0x14e0 kernel/signal.c:2875
arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:865
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:172
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:314
exc_general_protection+0x358/0x4f0 arch/x86/kernel/traps.c:562
asm_exc_general_protection+0x22/0x30 arch/x86/include/asm/idtentry.h:562
RIP: 0033:0x7f52b1103171
RSP: 002b:0000000020000140 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f52b1223120 RCX: 00007f52b1103169
RDX: 0000000020000380 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 00007f52b115eca1 R08: 0000000020000400 R09: 0000000020000400
R10: 00000000200003c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd619a4fcf R14: 00007f52af633300 R15: 0000000000022000
INFO: task syz-executor.3:20504 blocked for more than 146 seconds.
Not tainted 5.15.107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:22648 pid:20504 ppid: 31160 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
wb_wait_for_completion+0x164/0x290 fs/fs-writeback.c:191
__writeback_inodes_sb_nr+0x2ce/0x370 fs/fs-writeback.c:2659
try_to_writeback_inodes_sb+0x94/0xb0 fs/fs-writeback.c:2707
ext4_nonda_switch fs/ext4/inode.c:2943 [inline]
ext4_da_write_begin+0x228/0xb60 fs/ext4/inode.c:2970
generic_perform_write+0x2bf/0x5b0 mm/filemap.c:3776
ext4_buffered_write_iter+0x22e/0x380 fs/ext4/file.c:269
ext4_file_write_iter+0x87c/0x1990
__kernel_write+0x5b1/0xa60 fs/read_write.c:539
__dump_emit+0x264/0x3a0 fs/coredump.c:875
dump_user_range+0x91/0x320 fs/coredump.c:949
elf_core_dump+0x3c7d/0x4570 fs/binfmt_elf.c:2285
do_coredump+0x1852/0x31e0 fs/coredump.c:826
get_signal+0xc06/0x14e0 kernel/signal.c:2875
arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:865
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:172
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:314
exc_general_protection+0x358/0x4f0 arch/x86/kernel/traps.c:562
asm_exc_general_protection+0x22/0x30 arch/x86/include/asm/idtentry.h:562
RIP: 0033:0x7fd5e096d171
RSP: 002b:0000000020000140 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fd5e0a8d050 RCX: 00007fd5e096d169
RDX: 0000000020000380 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 00007fd5e09c8ca1 R08: 0000000020000400 R09: 0000000020000400
R10: 00000000200003c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe6501977f R14: 00007fd5deebe300 R15: 0000000000022000
INFO: task syz-executor.5:20537 blocked for more than 147 seconds.
Not tainted 5.15.107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:21600 pid:20537 ppid: 3603 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
wb_wait_for_completion+0x164/0x290 fs/fs-writeback.c:191
__writeback_inodes_sb_nr+0x2ce/0x370 fs/fs-writeback.c:2659
try_to_writeback_inodes_sb+0x94/0xb0 fs/fs-writeback.c:2707
ext4_nonda_switch fs/ext4/inode.c:2943 [inline]
ext4_da_write_begin+0x228/0xb60 fs/ext4/inode.c:2970
generic_perform_write+0x2bf/0x5b0 mm/filemap.c:3776
ext4_buffered_write_iter+0x22e/0x380 fs/ext4/file.c:269
ext4_file_write_iter+0x87c/0x1990
__kernel_write+0x5b1/0xa60 fs/read_write.c:539
__dump_emit+0x264/0x3a0 fs/coredump.c:875
dump_user_range+0x91/0x320 fs/coredump.c:949
elf_core_dump+0x3c7d/0x4570 fs/binfmt_elf.c:2285
do_coredump+0x1852/0x31e0 fs/coredump.c:826
get_signal+0xc06/0x14e0 kernel/signal.c:2875
arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:865
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:172
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:314
exc_general_protection+0x358/0x4f0 arch/x86/kernel/traps.c:562
asm_exc_general_protection+0x22/0x30 arch/x86/include/asm/idtentry.h:562
RIP: 0033:0x7f52b1103171
RSP: 002b:0000000020000140 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f52b1223120 RCX: 00007f52b1103169
RDX: 0000000020000380 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 00007f52b115eca1 R08: 0000000020000400 R09: 0000000020000400
R10: 00000000200003c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd619a4fcf R14: 00007f52af633300 R15: 0000000000022000
INFO: task syz-executor.3:20591 blocked for more than 147 seconds.
Not tainted 5.15.107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:22296 pid:20591 ppid: 31160 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
wb_wait_for_completion+0x164/0x290 fs/fs-writeback.c:191
__writeback_inodes_sb_nr+0x2ce/0x370 fs/fs-writeback.c:2659
try_to_writeback_inodes_sb+0x94/0xb0 fs/fs-writeback.c:2707
ext4_nonda_switch fs/ext4/inode.c:2943 [inline]
ext4_da_write_begin+0x228/0xb60 fs/ext4/inode.c:2970
generic_perform_write+0x2bf/0x5b0 mm/filemap.c:3776
ext4_buffered_write_iter+0x22e/0x380 fs/ext4/file.c:269
ext4_file_write_iter+0x87c/0x1990
__kernel_write+0x5b1/0xa60 fs/read_write.c:539
__dump_emit+0x264/0x3a0 fs/coredump.c:875
dump_user_range+0x91/0x320 fs/coredump.c:949
elf_core_dump+0x3c7d/0x4570 fs/binfmt_elf.c:2285
do_coredump+0x1852/0x31e0 fs/coredump.c:826
get_signal+0xc06/0x14e0 kernel/signal.c:2875
arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:865
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:172
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:314
exc_general_protection+0x358/0x4f0 arch/x86/kernel/traps.c:562
asm_exc_general_protection+0x22/0x30 arch/x86/include/asm/idtentry.h:562
RIP: 0033:0x7fd5e096d171
RSP: 002b:0000000020000140 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fd5e0a8d120 RCX: 00007fd5e096d169
RDX: 0000000020000380 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 00007fd5e09c8ca1 R08: 0000000020000400 R09: 0000000020000400
R10: 00000000200003c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe6501977f R14: 00007fd5dee9d300 R15: 0000000000022000
INFO: task syz-executor.3:20693 blocked for more than 148 seconds.
Not tainted 5.15.107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:22360 pid:20693 ppid: 31160 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
wb_wait_for_completion+0x164/0x290 fs/fs-writeback.c:191
__writeback_inodes_sb_nr+0x2ce/0x370 fs/fs-writeback.c:2659
try_to_writeback_inodes_sb+0x94/0xb0 fs/fs-writeback.c:2707
ext4_nonda_switch fs/ext4/inode.c:2943 [inline]
ext4_da_write_begin+0x228/0xb60 fs/ext4/inode.c:2970
generic_perform_write+0x2bf/0x5b0 mm/filemap.c:3776
ext4_buffered_write_iter+0x22e/0x380 fs/ext4/file.c:269
ext4_file_write_iter+0x87c/0x1990
__kernel_write+0x5b1/0xa60 fs/read_write.c:539
__dump_emit+0x264/0x3a0 fs/coredump.c:875
dump_user_range+0x91/0x320 fs/coredump.c:949
elf_core_dump+0x3c7d/0x4570 fs/binfmt_elf.c:2285
do_coredump+0x1852/0x31e0 fs/coredump.c:826
get_signal+0xc06/0x14e0 kernel/signal.c:2875
arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:865
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:172
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:314
exc_general_protection+0x358/0x4f0 arch/x86/kernel/traps.c:562
asm_exc_general_protection+0x22/0x30 arch/x86/include/asm/idtentry.h:562
RIP: 0033:0x7fd5e096d171
RSP: 002b:0000000020000140 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fd5e0a8cf80 RCX: 00007fd5e096d169
RDX: 0000000020000380 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 00007fd5e09c8ca1 R08: 0000000020000400 R09: 0000000020000400
R10: 00000000200003c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe6501977f R14: 00007fd5deedf300 R15: 0000000000022000
INFO: task syz-executor.5:20729 blocked for more than 149 seconds.
Not tainted 5.15.107-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:22712 pid:20729 ppid: 3603 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
wb_wait_for_completion+0x164/0x290 fs/fs-writeback.c:191
__writeback_inodes_sb_nr+0x2ce/0x370 fs/fs-writeback.c:2659
try_to_writeback_inodes_sb+0x94/0xb0 fs/fs-writeback.c:2707
ext4_nonda_switch fs/ext4/inode.c:2943 [inline]
ext4_da_write_begin+0x228/0xb60 fs/ext4/inode.c:2970
generic_perform_write+0x2bf/0x5b0 mm/filemap.c:3776
ext4_buffered_write_iter+0x22e/0x380 fs/ext4/file.c:269
ext4_file_write_iter+0x87c/0x1990
__kernel_write+0x5b1/0xa60 fs/read_write.c:539
__dump_emit+0x264/0x3a0 fs/coredump.c:875
dump_user_range+0x91/0x320 fs/coredump.c:949
elf_core_dump+0x3c7d/0x4570 fs/binfmt_elf.c:2285
do_coredump+0x1852/0x31e0 fs/coredump.c:826
get_signal+0xc06/0x14e0 kernel/signal.c:2875
arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:865
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:172
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:314
exc_general_protection+0x358/0x4f0 arch/x86/kernel/traps.c:562
asm_exc_general_protection+0x22/0x30 arch/x86/include/asm/idtentry.h:562
RIP: 0033:0x7f52b1103171
RSP: 002b:0000000020000140 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f52b1223050 RCX: 00007f52b1103169
RDX: 0000000020000380 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 00007f52b115eca1 R08: 0000000020000400 R09: 0000000020000400
R10: 00000000200003c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd619a4fcf R14: 00007f52af654300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8c91b920 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3268:
#0: ffff88814af61098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc90002bb32e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1da0 drivers/tty/n_tty.c:2147
3 locks held by syz-fuzzer/3596:
2 locks held by kworker/u4:6/32145:
2 locks held by syz-executor.3/20457:
2 locks held by syz-executor.5/20458:
2 locks held by syz-executor.5/20496:
2 locks held by syz-executor.3/20504:
2 locks held by syz-executor.5/20537:
2 locks held by syz-executor.3/20591:
2 locks held by syz-executor.3/20693:
3 locks held by syz-executor.3/20759:
4 locks held by syz-executor.2/20818:
3 locks held by syz-executor.3/20827:
3 locks held by syz-executor.2/20918:
2 locks held by syz-executor.5/20949:
1 lock held by syz-executor.2/21063:
#0: ffff888024551d28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline]
#0: ffff888024551d28 (&mm->mmap_lock#2){++++}-{3:3}, at: vm_mmap_pgoff+0x175/0x2d0 mm/util.c:549
1 lock held by syz-executor.2/21073:
#0: ffff888024551d28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock+0x1c/0x50 include/linux/mmap_lock.h:117
3 locks held by syz-executor.2/21076:
2 locks held by syz-executor.1/21071:
1 lock held by syz-executor.3/21072:
#0: ffff888024555528 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock+0x1c/0x50 include/linux/mmap_lock.h:117
2 locks held by syz-executor.0/21078:
2 locks held by syz-executor.4/21081:
2 locks held by syz-executor.1/21091:
1 lock held by syz-executor.4/21095:
2 locks held by syz-executor.4/21096:
2 locks held by syz-executor.2/21098:
2 locks held by syz-executor.3/21099:
2 locks held by syz-executor.4/21102:
1 lock held by syz-executor.1/21104:
1 lock held by udevd/21106:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 21096 Comm: syz-executor.4 Not tainted 5.15.107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
RIP: 0010:rcu_lock_acquire+0x0/0x30 include/linux/rcupdate.h:268
Code: 1c 9a 8c 4c 89 ee e8 bf 84 84 02 e9 d1 fc ff ff e8 25 b4 dc ff 48 c7 c7 e0 1c 9a 8c 4c 89 f6 e8 a6 84 84 02 e9 e8 fe ff ff 90 <53> 48 89 fb e8 07 b4 dc ff e8 02 b4 dc ff 48 89 df 31 f6 31 d2 b9
RSP: 0018:ffffc900052de918 EFLAGS: 00000083
RAX: 0000000000000001 RBX: ffffc900052de9e0 RCX: ffff8880576ad700
RDX: 0000000040000000 RSI: 0000000000000004 RDI: ffffffff8c91b920
RBP: ffffc900052dea58 R08: dffffc0000000000 R09: ffffed1017365441
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000a5bd30
R13: ffff888068f76fa0 R14: ffffc900052de9c0 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe8388836be CR3: 0000000059b65000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_lock include/linux/rcupdate.h:696 [inline]
perf_event_update_userpage+0x122/0x800 kernel/events/core.c:5956
cpu_clock_event_add+0x3a/0x40 kernel/events/core.c:10855
event_sched_in+0x721/0xf60 kernel/events/core.c:2622
group_sched_in kernel/events/core.c:2658 [inline]
merge_sched_in kernel/events/core.c:3852 [inline]
visit_groups_merge+0xe4d/0x2a40 kernel/events/core.c:3796
ctx_flexible_sched_in+0xab/0x100 kernel/events/core.c:3894
perf_event_context_sched_in+0x371/0x5e0 kernel/events/core.c:3993
__perf_event_task_sched_in+0x3bb/0x510 kernel/events/core.c:4036
perf_event_task_sched_in include/linux/perf_event.h:1210 [inline]
finish_task_switch+0x3fb/0x630 kernel/sched/core.c:4895
context_switch kernel/sched/core.c:5029 [inline]
__schedule+0x12cc/0x4590 kernel/sched/core.c:6372
preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6548
preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6573
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
__raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock+0x36/0x40 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:403 [inline]
zap_pte_range mm/memory.c:1435 [inline]
zap_pmd_range mm/memory.c:1494 [inline]
zap_pud_range mm/memory.c:1523 [inline]
zap_p4d_range mm/memory.c:1544 [inline]
unmap_page_range+0x8a7/0x2630 mm/memory.c:1565
unmap_vmas+0x1f8/0x390 mm/memory.c:1642
exit_mmap+0x3b6/0x670 mm/mmap.c:3186
__mmput+0x112/0x3b0 kernel/fork.c:1118
exit_mm+0x688/0x7f0 kernel/exit.c:548
do_exit+0x626/0x2480 kernel/exit.c:859
do_group_exit+0x144/0x310 kernel/exit.c:994
get_signal+0xc66/0x14e0 kernel/signal.c:2889
arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:865
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:172
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
__syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301
do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7ff0029de169
Code: Unable to access opcode bytes at RIP 0x7ff0029de13f.
RSP: 002b:00007ff000f50218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007ff002afdf88 RCX: 00007ff0029de169
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007ff002afdf88
RBP: 00007ff002afdf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff002afdf8c
R13: 00007ffec52755cf R14: 00007ff000f50300 R15: 0000000000022000