Public bug reported:
[ 1918.995157] watchdog: BUG: soft lockup - CPU#0 stuck for 1725s! [kswapd0:42]
[ 1919.002366] Modules linked in: raid10 raid456 libcrc32c async_raid6_recov
async_memcpy async_pq async_xor xor xor_neon async_tx raid6_pq raid1 raid0
multipath linear scsi_dh_alua scsi_dh_emc scsi_dh_rdac nvme nvme_core
nvme_common
[ 1919.023319] CPU: 0 PID: 42 Comm: kswapd0 Tainted: G L
6.5.0-1011-nvidia #11-Ubuntu
[ 1919.032483] Hardware name: NVIDIA Grace Hopper x4 P4496/UT2.1 DP Chassis,
BIOS 01.02.00 20240120
[ 1919.042180] pstate: 83400009 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
[ 1919.049300] pc : __rcu_read_unlock+0x10/0x70
[ 1919.053666] lr : shrink_many+0x280/0x468
[ 1919.057675] sp : ffff80008149bb70
[ 1919.061060] x29: ffff80008149bb70 x28: ffff00003ddfa600 x27: ffffdeee387571e0
[ 1919.068366] x26: ffffdeee383154f8 x25: 0000000000000001 x24: ffff301c90bf4400
[ 1919.075671] x23: ffffffffffffffff x22: 0000000000000000 x21: ffff301c90bf4400
[ 1919.082975] x20: 00000000000002d3 x19: ffff80008149bd68 x18: 0000000000000000
[ 1919.090281] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
[ 1919.097585] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000
[ 1919.104890] x11: 0000000000000000 x10: 0000000000000000 x9 : ffffdeee355c2008
[ 1919.112195] x8 : ffff80008149bde0 x7 : 0000000000000000 x6 : 0000000000000020
[ 1919.119500] x5 : 0000000000000001 x4 : 0000000000000000 x3 : 0000000000000000
[ 1919.126804] x2 : 0000000000000000 x1 : 0000000000000001 x0 : ffff301c90bf4400
[ 1919.134109] Call trace:
[ 1919.136606] __rcu_read_unlock+0x10/0x70
[ 1919.140615] lru_gen_shrink_node+0x180/0x218
[ 1919.144979] shrink_node+0x400/0x470
[ 1919.148633] balance_pgdat+0x2c8/0x810
[ 1919.152464] kswapd+0x12c/0x268
[ 1919.155672] kthread+0x104/0x110
[ 1919.158970] ret_from_fork+0x10/0x20
[ 1942.995157] watchdog: BUG: soft lockup - CPU#0 stuck for 1747s! [kswapd0:42]
[ 1943.002366] Modules linked in: raid10 raid456 libcrc32c async_raid6_recov
async_memcpy async_pq async_xor xor xor_neon async_tx raid6_pq raid1 raid0
multipath linear scsi_dh_alua scsi_dh_emc scsi_dh_rdac nvme nvme_core
nvme_common
[ 1943.023319] CPU: 0 PID: 42 Comm: kswapd0 Tainted: G L
6.5.0-1011-nvidia #11-Ubuntu
[ 1943.032483] Hardware name: NVIDIA Grace Hopper x4 P4496/UT2.1 DP Chassis,
BIOS 01.02.00 20240120
[ 1943.042180] pstate: 63400009 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
[ 1943.049300] pc : lru_gen_shrink_node+0x60/0x218
[ 1943.053932] lr : lru_gen_shrink_node+0x1b8/0x218
[ 1943.058651] sp : ffff80008149bbf0
[ 1943.062037] x29: ffff80008149bbf0 x28: ffff00003ddfa600 x27: ffffdeee387571e0
[ 1943.069342] x26: ffffdeee383154f8 x25: ffff80008149bde0 x24: 00000000000007c0
[ 1943.076647] x23: 0000000000000001 x22: 0000000000000000 x21: ffff00003ddfe600
[ 1943.083952] x20: ffff00003ddfa600 x19: ffff80008149bd68 x18: 0000000000000000
[ 1943.091257] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
[ 1943.098562] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000
[ 1943.105867] x11: 0000000000000000 x10: 0000000000000000 x9 : ffffdeee359e4bb8
[ 1943.113172] x8 : ffff80008149bde0 x7 : 0000000000000000 x6 : 0000000000000000
[ 1943.120477] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000
[ 1943.127782] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff301c90bf4400
[ 1943.135086] Call trace:
[ 1943.137583] lru_gen_shrink_node+0x60/0x218
[ 1943.141858] shrink_node+0x400/0x470
[ 1943.145511] balance_pgdat+0x2c8/0x810
[ 1943.149342] kswapd+0x12c/0x268
[ 1943.152551] kthread+0x104/0x110
[ 1943.155849] ret_from_fork+0x10/0x20
** Affects: linux-nvidia-6.5 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2055060
Title:
Pull-request: Apply mm/mglru patches to fix soft lockup
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